Title: $339 Cheap flights from Phoenix to Sidney (PHX to SDY) - Expedia.com ![Adobe](https://images.trvl-media.com/place/3119/a06eb185-b670-43b5-a222-b9723a9fdab0.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3119/a06eb185-b670-43b5-a222-b9723a9fdab0.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $339 Cheap Flights from Phoenix (PHX) to Sidney (SDY) [View $339 flight on Fri, Mar 6, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:PHX,to:SDY,departure:3/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:338.61&airProductToken=AQqOAQovCMGmARIDNTExGO-5ASDvuAEo0POGAzCA9YYDOFNAAFgBagJNQXIIU0g3T0FKTU4KLwjBpgESBDIxNjEY77gBIIFaKLb1hgMwqPaGAzhTQAFYAWoCTUFyCFNIN09BSk1OCioIuZYBEgQxNzg5GIFaIPLAASiC94YDMOv3hgM4U0ABWAFqAkVScgNTSVASCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Flight 1 Leaving from Going to Departing Flight 2 Leaving from Going to Departing ## Popular airlines from Phoenix Sky Harbor Intl. Airport (PHX) to Sidney, MT (SDY-Sidney-Richland Municipal) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.com/Flights-Search?leg1=from:PHX,to:SDY,departure:3/3/2026TANYT&leg2=from:SDY,to:PHX,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Phoenix to Sidney (PHX-SDY) Prices were available within the past 7 days and start at $339 for one-way flights and $524 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $524 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:523.20&airProductToken=AQqbAQo2CMSYARIEMTUzNRjvuQEg8hIorJeJAzCTmIkDOFhAAFgBaglNQUlOQ0xBU0NyCFhBVlRBME1MCjUIxJgBEgQ0MDM4GPISIIFaKL2YiQMwlZmJAzhYQAFYAWoJTUFJTkNMQVNDcghYQVZUQTBNTAoqCLmWARIEMTc4MRiBWiDywAEo-5mJAzDkmokDOFNAAVgBagJFUnIDU0lQCpsBCioIuZYBEgQxNzg4GPLAASCBWiin04kDMJjUiQM4U0AAWAFqAkVScgNTSVAKNQjEmAESBDM4MjgYgVog8hIo9dSJAzDY1YkDOFZAAVgBaglNQUlOQ0xBU0NyCFZBVlNBME1MCjYIxJgBEgQxNDk2GPISIO-5ASj91okDMO_XiQM4VkABWAFqCU1BSU5DTEFTQ3IIVkFWU0EwTUwSDAgBEAEYASoCREwyABgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $556 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:555.20&airProductToken=AQqbAQo2CMSYARIEMTUzNRjvuQEg8hIorJeJAzCTmIkDOFhAAFgBaglNQUlOQ0xBU0NyCFhBVlRBME1MCjUIxJgBEgQ0MDM4GPISIIFaKL2YiQMwlZmJAzhYQAFYAWoJTUFJTkNMQVNDcghYQVZUQTBNTAoqCLmWARIEMTc4MRiBWiDywAEo-5mJAzDkmokDOFNAAVgBagJFUnIDU0lQCpsBCioIuZYBEgQxNzc4GPLAASCBWijvz4kDMODQiQM4U0AAWAFqAkVScgNTSVAKNQjEmAESBDQwMzgYgVog8hIo3tGJAzC50okDOFhAAVgBaglNQUlOQ0xBU0NyCFhBVlRBME1MCjYIxJgBEgQxNzM4GPISIO-5ASjI04kDMLHUiQM4WEABWAFqCU1BSU5DTEFTQ3IIWEFWVEEwTUwSDAgBEAEYASoCREwyABgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $560 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:559.20&airProductToken=AQqTAQoyCMGCARIEMjAwNRjvuQEgo7EBKPCWiQMwhZiJAzhTQABYAWoETUFJTnIIU1VBV1pOTjEKMQjBggESBDQwOTUYo7EBIIFaKO6YiQMwppqJAzhTQAFYAWoETUFJTnIIU1VBV1pOTjEKKgi5lgESBDE3ODUYgVog8sABKMaciQMwr52JAzhTQAFYAWoCRVJyA1NJUAqTAQoqCLmWARIEMTc3OBjywAEggVoo78-JAzDg0IkDOFNAAFgBagJFUnIDU0lQCjEIwYIBEgQ0MDk1GIFaIKOxASjk0okDMI_UiQM4T0ABWAFqBE1BSU5yCE9WQVdaU00zCjIIwYIBEgQxNTU5GKOxASDvuQEo3dWJAzCE14kDOE9AAVgBagRNQUlOcghPVkFXWlNNMxIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $570 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:569.20&airProductToken=AQqPAQoyCMGCARIEMjExMBjvuQEgo7EBKKyXiQMwxpiJAzhTQABYAWoETUFJTnIIU1VBV1pOTjEKMQjBggESBDQwOTUYo7EBIIFaKO6YiQMwppqJAzhTQAFYAWoETUFJTnIIU1VBV1pOTjEKJgi5lgESBDE3ODkYgVog8sABKIabiQMw75uJAzhRQAFYAXIDUUlQCpMBCioIuZYBEgQxNzgwGPLAASCBWijx0IkDMOLRiQM4U0AAWAFqAkVScgNTSVAKMQjBggESBDQwOTUYgVogo7EBKOTSiQMwj9SJAzhPQAFYAWoETUFJTnIIT1ZBV1pTTTMKMgjBggESBDE1NTkYo7EBIO-5ASjd1YkDMITXiQM4T0ABWAFqBE1BSU5yCE9WQVdaU00zEgwIARABGAEqAkFBMgAYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $592 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:591.20&airProductToken=AQqVAQozCNWCARIDMzM3GO-5ASCDaSisl4kDMJ-YiQM4V0AAWAFqB0VDT05PTVlyCFdBQTRBRkVOCjII1YIBEgM3MDMYg2kggVooyZmJAzCrmokDOFdAAVgBagdFQ09OT01ZcghXQUE0QUZFTgoqCLmWARIEMTc4NRiBWiDywAEoxpyJAzCvnYkDOFNAAVgBagJFUnIDU0lQCpYBCioIuZYBEgQxNzgwGPLAASCBWijx0IkDMOLRiQM4U0AAWAFqAkVScgNTSVAKMgjVggESAzQ3OBiBWiCDaSiT04kDMIPUiQM4VEABWAFqB0VDT05PTVlyCFRBQTJBWkRTCjQI1YIBEgQxNzI5GINpIO-5ASir1YkDMKfWiQM4VEABWAFqB0VDT05PTVlyCFRBQTJBWkRTEgwIARABGAEqAlVBMgAYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, Apr 27 - Sat, May 9 PHX Phoenix SDY Sidney $601 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/27/2026TANYT&leg2=from:SDY,to:PHX,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:600.21&airProductToken=AQqOAQovCMGmARIDMzM3GO-5ASDvuAEop7yLAzDSvYsDOFZAAFgBagJNQXIIVkg0T0FKTU4KLwjBpgESBDIxNjEY77gBIIFaKPq9iwMw7r6LAzhWQAFYAWoCTUFyCFZINE9BSk1OCioIuZYBEgQxNzg1GIFaIPLAASiJwYsDMO_BiwM4U0ABWAFqAkVScgNTSVAKjAEKKgi5lgESBDE3NzgY8sABIIFaKI_DjAMwgsSMAzhTQABYAWoCRVJyA1NJUAouCMGmARIEMjA4NBiBWiCSASiWxowDMJXHjAM4T0ABWAFqAk1BcghPSDJZWFVNTgouCMGmARIDNjA0GJIBIO-5ASj3yIwDMKvKjAM4T0ABWAFqAk1BcghPSDJZWFVNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $602 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:601.20&airProductToken=AQqRAQozCNWCARIDMzM3GO-5ASCDaSisl4kDMJ-YiQM4V0AAWAFqB0VDT05PTVlyCFdBQTRBRkVOCjII1YIBEgM3MDMYg2kggVooyZmJAzCrmokDOFdAAVgBagdFQ09OT01ZcghXQUE0QUZFTgomCLmWARIEMTc4ORiBWiDywAEohpuJAzDvm4kDOFFAAVgBcgNRSVAKlgEKKgi5lgESBDE3ODAY8sABIIFaKPHQiQMw4tGJAzhTQABYAWoCRVJyA1NJUAoyCNWCARIDNDc4GIFaIINpKJPTiQMwg9SJAzhUQAFYAWoHRUNPTk9NWXIIVEFBMkFaRFMKNAjVggESBDE3MjkYg2kg77kBKKvViQMwp9aJAzhUQAFYAWoHRUNPTk9NWXIIVEFBMkFaRFMSDAgBEAEYASoCVUEyABgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Mar 12 - Tue, Mar 17 PHX Phoenix SDY Sidney $618 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:3/12/2026TANYT&leg2=from:SDY,to:PHX,departure:3/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:617.19&airProductToken=AQqMAQouCMGmARIDNjA1GO-5ASCSASjwtYcDMLK3hwM4TkAAWAFqAk1BcghOSDJPQUpNTgouCMGmARIEMjM1MxiSASCBWiiQuYcDMIS6hwM4TkABWAFqAk1BcghOSDJPQUpNTgoqCLmWARIEMTc4NRiBWiDywAEoxruHAzCvvIcDOFNAAVgBagJFUnIDU0lQCowBCioIuZYBEgQxNzc4GPLAASCBWijv7ocDMODvhwM4U0AAWAFqAkVScgNTSVAKLgjBpgESBDIwODQYgVogkgEo9PGHAzD58ocDOFNAAVgBagJNQXIIU0g0T0RKTU4KLgjBpgESAzYzMhiSASDvuQEo5vOHAzCU9YcDOFNAAVgBagJNQXIIU0g0T0RKTU4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $622 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:621.20&airProductToken=AQqVAQozCNWCARIDMzM3GO-5ASCDaSisl4kDMJ-YiQM4V0AAWAFqB0VDT05PTVlyCFdBQTRBRkVOCjII1YIBEgM3MDMYg2kggVooyZmJAzCrmokDOFdAAVgBagdFQ09OT01ZcghXQUE0QUZFTgoqCLmWARIEMTc4NRiBWiDywAEoxpyJAzCvnYkDOFNAAVgBagJFUnIDU0lQCpYBCioIuZYBEgQxNzc4GPLAASCBWijvz4kDMODQiQM4U0AAWAFqAkVScgNTSVAKMgjVggESAzQ3OBiBWiCDaSiT04kDMIPUiQM4U0ABWAFqB0VDT05PTVlyCFNBQTJBWkRTCjQI1YIBEgQyMzQ3GINpIO-5ASjN1IkDMMnViQM4U0ABWAFqB0VDT05PTVlyCFNBQTJBWkRTEgwIARABGAEqAlVBMgAYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Mon, Apr 27 - Sat, May 9 PHX Phoenix SDY Sidney $623 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/27/2026TANYT&leg2=from:SDY,to:PHX,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:622.20&airProductToken=AQqTAQoyCMGCARIEMTAxOBjvuQEgo7EBKOy7iwMwhb2LAzhHQABYAWoETUFJTnIIRzdBV1pOTjEKMQjBggESBDM0NjgYo7EBIIFaKLS9iwMw6b6LAzhHQAFYAWoETUFJTnIIRzdBV1pOTjEKKgi5lgESBDE3ODkYgVog8sABKM-_iwMwtcCLAzhTQAFYAWoCRVJyA1NJUAqTAQoqCLmWARIEMTc3OBjywAEggVooj8OMAzCCxIwDOFNAAFgBagJFUnIDU0lQCjEIwYIBEgQzNDY4GIFaIKOxASiHxowDMLPHjAM4UUABWAFqBE1BSU5yCFFWQldaTk0zCjIIwYIBEgQxNDA3GKOxASDvuQEo8ceMAzCTyYwDOFFAAVgBagRNQUlOcghRVkJXWk5NMxIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $632 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:631.20&airProductToken=AQqRAQozCNWCARIDMzM3GO-5ASCDaSisl4kDMJ-YiQM4V0AAWAFqB0VDT05PTVlyCFdBQTRBRkVOCjII1YIBEgM3MDMYg2kggVooyZmJAzCrmokDOFdAAVgBagdFQ09OT01ZcghXQUE0QUZFTgomCLmWARIEMTc4ORiBWiDywAEohpuJAzDvm4kDOFFAAVgBcgNRSVAKlgEKKgi5lgESBDE3ODAY8sABIIFaKPHQiQMw4tGJAzhTQABYAWoCRVJyA1NJUAoyCNWCARIDNDc4GIFaIINpKJPTiQMwg9SJAzhTQAFYAWoHRUNPTk9NWXIIU0FBMkFaRFMKNAjVggESBDIzNDcYg2kg77kBKM3UiQMwydWJAzhTQAFYAWoHRUNPTk9NWXIIU0FBMkFaRFMSDAgBEAEYASoCVUEyABgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, Apr 27 - Sat, May 9 PHX Phoenix SDY Sidney $638 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/27/2026TANYT&leg2=from:SDY,to:PHX,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:637.20&airProductToken=AQqOAQovCMGmARIDMzM3GO-5ASDvuAEop7yLAzDSvYsDOFZAAFgBagJNQXIIVkg0T0FKTU4KLwjBpgESBDIxNjEY77gBIIFaKPq9iwMw7r6LAzhWQAFYAWoCTUFyCFZINE9BSk1OCioIuZYBEgQxNzg1GIFaIPLAASiJwYsDMO_BiwM4U0ABWAFqAkVScgNTSVAKjgEKKgi5lgESBDE3ODAY8sABIIFaKITEjAMw98SMAzhTQABYAWoCRVJyA1NJUAovCMGmARIEMjE4MRiBWiDvuAEoycWMAzDCxowDOFFAAVgBagJNQXIIUUgyT0FVTU4KLwjBpgESAzY2MxjvuAEg77kBKOrGjAMwjsiMAzhRQAFYAWoCTUFyCFFIMk9BVU1OEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Apr 27 - Sat, May 9 PHX Phoenix SDY Sidney $648 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/27/2026TANYT&leg2=from:SDY,to:PHX,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:647.20&airProductToken=AQqUAQoxCNWCARIDMzM3GO-5ASCDaSjsu4sDMN-8iwM4VkAAWAFqBTJfZWNvcghWQUEwQUZFTgowCNWCARIDNzAzGINpIIFaKIm-iwMw676LAzhWQABYAWoFMl9lY29yCFZBQTBBRkVOCi0IuZYBEgQxNzg5GIFaIPLAASjPv4sDMLXAiwM4U0AAWAFqBTJfZWNvcgNTSVAKlQEKLQi5lgESBDE3ODAY8sABIIFaKITEjAMw98SMAzhTQABYAWoFMl9lY29yA1NJUAowCNWCARIDNDc4GIFaIINpKK7GjAMwnseMAzhUQABYAWoFMl9lY29yCFRSQTJBRkROCjII1YIBEgQxNzI5GINpIO-5ASjLyIwDMMfJjAM4VEAAWAFqBTJfZWNvcghUUkEyQUZEThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Apr 1 - Mon, Apr 6 PHX Phoenix SDY Sidney $652 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/1/2026TANYT&leg2=from:SDY,to:PHX,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:651.20&airProductToken=AQqSAQo0CNWCARIEMTg4NRjvuQEgg2ko6JeJAzDbmIkDOFZAAFgBagdFQ09OT01ZcghWQUEwQUZFTgoyCNWCARIDNzAzGINpIIFaKMmZiQMwq5qJAzhWQAFYAWoHRUNPTk9NWXIIVkFBMEFGRU4KJgi5lgESBDE3ODkYgVog8sABKIabiQMw75uJAzhRQAFYAXIDUUlQCpYBCioIuZYBEgQxNzgwGPLAASCBWijx0IkDMOLRiQM4U0AAWAFqAkVScgNTSVAKMgjVggESAzQ3OBiBWiCDaSiT04kDMIPUiQM4VEABWAFqB0VDT05PTVlyCFRBQTJBWkRTCjQI1YIBEgQxNzI5GINpIO-5ASir1YkDMKfWiQM4VEABWAFqB0VDT05PTVlyCFRBQTJBWkRTEgwIARABGAEqAlVBMgAYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Mar 12 - Tue, Mar 17 PHX Phoenix SDY Sidney $668 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:3/12/2026TANYT&leg2=from:SDY,to:PHX,departure:3/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:667.20&airProductToken=AQqOAQovCMGmARIDMTg2GO-5ASDvuAEo1LaHAzCDuIcDOFNAAFgBagJNQXIIU0g3T0FKTU4KLwjBpgESBDIxNjEY77gBIIFaKLq4hwMwrLmHAzhTQAFYAWoCTUFyCFNIN09BSk1OCioIuZYBEgQxNzg5GIFaIPLAASiGuocDMO-6hwM4U0ABWAFqAkVScgNTSVAKjAEKKgi5lgESBDE3NzgY8sABIIFaKO_uhwMw4O-HAzhTQABYAWoCRVJyA1NJUAouCMGmARIEMjA4NBiBWiCSASj08YcDMPnyhwM4U0ABWAFqAk1BcghTSDRPREpNTgouCMGmARIDNzQ0GJIBIO-5ASim84cDMNT0hwM4U0ABWAFqAk1BcghTSDRPREpNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Apr 27 - Sat, May 9 PHX Phoenix SDY Sidney $673 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/27/2026TANYT&leg2=from:SDY,to:PHX,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:672.20&airProductToken=AQqVAQoyCNWCARIEMTg4NRjvuQEgg2koqLyLAzCbvYsDOFZAAFgBagUyX2Vjb3IIVkFBMEFGRU4KMAjVggESAzcwMxiDaSCBWiiJvosDMOu-iwM4VkAAWAFqBTJfZWNvcghWQUEwQUZFTgotCLmWARIEMTc4ORiBWiDywAEoz7-LAzC1wIsDOFNAAFgBagUyX2Vjb3IDU0lQCpUBCi0IuZYBEgQxNzc4GPLAASCBWiiPw4wDMILEjAM4U0AAWAFqBTJfZWNvcgNTSVAKMQjVggESBDQ3MjgYgVogg2kow8SMAzC2xYwDOFNAAFgBagUyX2Vjb3IIU1JBNEFGRE4KMQjVggESAzYzMRiDaSDvuQEo7cWMAzDoxowDOFNAAFgBagUyX2Vjb3IIU1JBNEFGRE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Apr 27 - Sat, May 9 PHX Phoenix SDY Sidney $678 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:PHX,to:SDY,departure:4/27/2026TANYT&leg2=from:SDY,to:PHX,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:677.50&airProductToken=AQqUAQoxCNWCARIDMzM3GO-5ASCDaSjsu4sDMN-8iwM4VkAAWAFqBTJfZWNvcghWQUEwQUZFTgowCNWCARIDNzAzGINpIIFaKIm-iwMw676LAzhWQABYAWoFMl9lY29yCFZBQTBBRkVOCi0IuZYBEgQxNzg5GIFaIPLAASjPv4sDMLXAiwM4U0AAWAFqBTJfZWNvcgNTSVAKygEKLQi5lgESBDE3NzgY8sABIIFaKI_DjAMwgsSMAzhTQABYAWoFMl9lY29yA1NJUAoxCNWCARIENDcyOBiBWiCDaSjDxIwDMLbFjAM4U0AAWAFqBTJfZWNvcghTUkE0QUZETgoxCNWCARIDNzc0GINpIIu4ASjuxYwDMIvHjAM4U0AAWAFqBTJfZWNvcghTUkE0QUZETgozCNWCARIENTU0NxiLuAEg77kBKOfHjAMwysiMAzhTQABYAWoFMl9lY29yCFNSQTRBRkROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Frequently asked questions ### How much does a flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) cost? ### What is the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### Which airlines fly direct from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### What is the cheapest airline that flies from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### How do I find cheap flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### What is the best time to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### What is the earliest flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### What day of the week has the most flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### What are the most popular departure times for flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### How long does it take to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### Can you fly business or first class from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ### How do I earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight with Expedia? ### What airports do you fly into for Sidney from Sky Harbor Intl. (PHX)? ### Is it cheaper to buy a plane ticket from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) at the last minute? ### Is it cheaper to book a Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight and hotel package? ### Can I cancel or change the date of my flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)? ## Travel information | Origin airport | Sky Harbor Intl. | | ------------------- | ------------------------- | | Destination airport | Sidney-Richland Municipal | | Roundtrip price | $523 | | Distance | 1067 mi | ## Book with confidence # Phoenix to Sidney Flights The cheapest times to fly from Phoenix to Sidney On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Phoenix to Sidney are during the month of April. You can find some of the cheapest flights from Phoenix to Sidney with Expedia's search tool and vast selection of airlines. The best time to book a flight from Phoenix to Sidney Sunday is one of the best days to book for cheap flights from Phoenix to Sidney: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Phoenix to Sidney Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Phoenix to Sidney in 2026\. You can also book with separate airlines for your outbound and return journeys, from $339 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Phoenix to Sidney flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Phoenix to Sidney airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rentals - [Hotels near Sidney Country Club ](https://www.expedia.com/Sidney-Country-Club-Hotels.0-l6310248-0.Travel-Guide-Filter-Hotels) - [Hotels near Richland County Fair Event Center and Fairgrounds ](https://www.expedia.com/Richland-County-Fair-Event-Center-And-Fairgrounds-Hotels.0-l553248621560799347-0.Travel-Guide-Filter-Hotels) - [Hotels near Sidney Health Center ](https://www.expedia.com/Sidney-Health-Center-Hotels.0-l553248621560799346-0.Travel-Guide-Filter-Hotels) - [Hotels near Central Park ](https://www.expedia.com/Central-Park-Hotels.0-l6310241-0.Travel-Guide-Filter-Hotels) - [Sidney Hotels ](https://www.expedia.com/Sidney-Hotels.d3119.Travel-Guide-Hotels) - [Extended Stay Hotels in Sidney ](https://www.expedia.com/Sidney-Hotels-Extended-Stay-Hotels.0-0-d3119-tExtendedStayHotels.Travel-Guide-Filter-Hotels) - 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