Title: Cheap flights from Green Bay to Casper (GRB to CPR) - Expedia.com ![Casper featuring landscape views and golf](https://images.trvl-media.com/place/6055899/008589a9-fc96-46ff-8eb9-c572559321cd.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Casper Area Convention and Visitors Bureau ![](https://images.trvl-media.com/place/6055899/008589a9-fc96-46ff-8eb9-c572559321cd.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Green Bay (GRB) to Casper (CPR) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Green Bay Austin Straubel Intl. Airport (GRB) to Casper, WY (CPR-Natrona County Intl.) - ![](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:GRB,to:CPR,departure:2/19/2026TANYT&leg2=from:CPR,to:GRB,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](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 Green Bay to Casper (GRB-CPR) Prices were available within the past 7 days and start at for one-way flights and $349 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $349 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:348.40&airProductToken=AQqpAQo2CNWCARIENDY0NximDCCuHCiKo4cDMN2jhwM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOCjYI1YIBEgQyNDk0GK4cIINpKLqkhwMw7KWHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKKWmhwMw76aHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTQ3NhiuHCCmDCjv8IcDMLrxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $367 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:366.68&airProductToken=AQqpAQo2CNWCARIENTI1NRimDCCuHCi7o4cDMI2khwM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOCjYI1YIBEgQyNDk0GK4cIINpKLqkhwMw7KWHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKKWmhwMw76aHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTg0ORiuHCCmDCiv8YcDMPjxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $378 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:377.43&airProductToken=AQqoAQo2CNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOCjUI1YIBEgMyNzAYrhwgg2ko1aKHAzCEpIcDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgo3CNWCARIENTQ3NxiDaSDiiwEo7KSHAzC5pYcDOE5AAFgBagoxX2Jhc2ljZWNvcghLRkEyQURCTgqpAQo3CNWCARIENTUxMxjiiwEgg2ko7e2HAzDE7ocDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIEMjQzMBiDaSCuHCj57ocDMJPwhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOCjYI1YIBEgQ1NDc2GK4cIKYMKO_whwMwuvGHAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Apr 18 - Sat, Apr 25 GRB Green Bay CPR Casper $394 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:4/18/2026TANYT&leg2=from:CPR,to:GRB,departure:4/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:393.89&airProductToken=AQpmCiAI1YIBEgQzNDY5GKYMIK4cKMzWigMwn9eKAzhMQABYAQofCNWCARIDNjA5GK4cIINpKL7ZigMw7tqKAzhMQAFYAQohCNWCARIENTU4NRiDaSDiiwEo0duKAzCb3IoDOExAAVgBCmcKIQjVggESBDU1MTMY4osBIINpKM2kiwMwpKWLAzhLQABYAQogCNWCARIEMjQzMBiDaSCuHCjZpYsDMPemiwM4S0ABWAEKIAjVggESBDUzMjcYrhwgpgwo-KiLAzDBqYsDOEtAAVgBEgoIARABGAEqAlVBGAEiBAgBEAEoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $396 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:395.70&airProductToken=AQqpAQo2CNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOCjYI1YIBEgQxMTEzGK4cIINpKI6ihwMwwKOHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyOTQYg2kg4osBKPujhwMwxqSHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTg0ORiuHCCmDCiv8YcDMPjxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $413 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:412.17&airProductToken=AQqpAQo2CNWCARIENTc4MBimDCCuHCiTn4cDMOmfhwM4TkAAWAFqCjFfYmFzaWNlY29yCExGQTRPREJOCjYI1YIBEgQxMDQ5GK4cIINpKJSghwMwwaGHAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNE9EQk4KNwjVggESBDQ3OTcYg2kg4osBKO2ihwMwuKOHAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNE9EQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTQ3NhiuHCCmDCjv8IcDMLrxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $415 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:414.32&airProductToken=AQqpAQo2CNWCARIENDE4ORimDCCuHCjsn4cDMMKghwM4TkAAWAFqCjFfYmFzaWNlY29yCExGQTRPREJOCjYI1YIBEgQxMTEzGK4cIINpKI6ihwMwwKOHAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNE9EQk4KNwjVggESBDUyOTQYg2kg4osBKPujhwMwxqSHAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNE9EQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTQ3NhiuHCCmDCjv8IcDMLrxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $419 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:418.40&airProductToken=AQqgAQozCNWCARIENDY0NximDCCuHCiKo4cDMN2jhwM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQyNDk0GK4cIINpKLqkhwMw7KWHAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KNAjVggESBDUyMjYYg2kg4osBKKWmhwMw76aHAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KoAEKNAjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhUQABYAWoHRUNPTk9NWXIIVEZBMEFERE4KMwjVggESBDIzMjkYg2kgrhwo6O-HAzCG8YcDOFRAAVgBagdFQ09OT01ZcghURkEwQURETgozCNWCARIENDYwORiuHCCmDCiV84cDMNjzhwM4VEABWAFqB0VDT05PTVlyCFRGQTBBREROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $431 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:430.44&airProductToken=AQqpAQo2CNWCARIENTc4MBimDCCuHCiTn4cDMOmfhwM4TkAAWAFqCjFfYmFzaWNlY29yCExGQTRPREJOCjYI1YIBEgQxMDQ5GK4cIINpKJSghwMwwaGHAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNE9EQk4KNwjVggESBDQ3OTcYg2kg4osBKO2ihwMwuKOHAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZBNE9EQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTg0ORiuHCCmDCiv8YcDMPjxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $437 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:436.68&airProductToken=AQqaAQoxCNWCARIENTI1NRimDCCuHCi7o4cDMI2khwM4S0AAWAFqBTJfZWNvcghLRkEyQURETgoxCNWCARIEMjQ5NBiuHCCDaSi6pIcDMOylhwM4S0AAWAFqBTJfZWNvcghLRkEyQURETgoyCNWCARIENTIyNhiDaSDiiwEopaaHAzDvpocDOEtAAFgBagUyX2Vjb3IIS0ZBMkFERE4KmgEKMgjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhUQABYAWoFMl9lY29yCFRGQTBBREROCjEI1YIBEgQyNDMwGINpIK4cKPnuhwMwk_CHAzhUQABYAWoFMl9lY29yCFRGQTBBREROCjEI1YIBEgQ1ODQ5GK4cIKYMKK_xhwMw-PGHAzhUQABYAWoFMl9lY29yCFRGQTBBREROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Apr 18 - Mon, Apr 20 GRB Green Bay CPR Casper $440 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:4/18/2026TANYT&leg2=from:CPR,to:GRB,departure:4/20/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:439.40&airProductToken=AQpmCiAI1YIBEgQzNDY5GKYMIK4cKMzWigMwn9eKAzhMQABYAQofCNWCARIDNjA5GK4cIINpKL7ZigMw7tqKAzhMQAFYAQohCNWCARIENTU4NRiDaSDiiwEo0duKAzCb3IoDOExAAVgBCmcKIQjVggESBDU4MDkY4osBIINpKPrwigMw1fGKAzhMQABYAQogCNWCARIEMTQxMRiDaSCuHCiQ8ooDMKzzigM4TEABWAEKIAjVggESBDM3MTMYrhwgpgwohvSKAzDJ9IoDOExAAVgBEgoIARABGAEqAlVBGAEiBAgBEAEoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $448 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:447.43&airProductToken=AQqZAQoxCNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4S0AAWAFqBTJfZWNvcghLRkEyQURETgowCNWCARIDMjcwGK4cIINpKNWihwMwhKSHAzhLQABYAWoFMl9lY29yCEtGQTJBREROCjII1YIBEgQ1NDc3GINpIOKLASjspIcDMLmlhwM4S0AAWAFqBTJfZWNvcghLRkEyQURETgqaAQoyCNWCARIENTUxMxjiiwEgg2ko7e2HAzDE7ocDOFRAAFgBagUyX2Vjb3IIVEZBMEFERE4KMQjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOFRAAFgBagUyX2Vjb3IIVEZBMEFERE4KMQjVggESBDU0NzYYrhwgpgwo7_CHAzC68YcDOFRAAFgBagUyX2Vjb3IIVEZBMEFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Apr 14 - Thu, Apr 23 GRB Green Bay CPR Casper $453 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:4/14/2026TANYT&leg2=from:CPR,to:GRB,departure:4/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:452.40&airProductToken=AQpnCiAI1YIBEgQ1MjcwGKYMIK4cKJ-tigMw7a2KAzhLQABYAQogCNWCARIEMjQ5NBiuHCCDaSiVrooDMMSvigM4S0ABWAEKIQjVggESBDUyMjYYg2kg4osBKI-wigMw17CKAzhLQAFYAQpnCiEI1YIBEgQ0NjY2GOKLASCDaSj7k4sDMNWUiwM4S0AAWAEKIAjVggESBDE0ODgYg2kgrhworJWLAzDKlosDOEtAAVgBCiAI1YIBEgQ1MjcyGK4cIKYMKLGbiwMw-5uLAzhLQAFYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $455 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:454.95&airProductToken=AQqpAQo2CNWCARIENDE4ORimDCCuHCjsn4cDMMKghwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOCjYI1YIBEgQxODAzGK4cIINpKJShhwMwxaKHAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNwjVggESBDQ3OTcYg2kg4osBKO2ihwMwuKOHAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KqQEKNwjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhOQABYAWoKMV9iYXNpY2Vjb3IIVEZBMEFEQk4KNgjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOE5AAFgBagoxX2Jhc2ljZWNvcghURkEwQURCTgo2CNWCARIENTQ3NhiuHCCmDCjv8IcDMLrxhwM4TkAAWAFqCjFfYmFzaWNlY29yCFRGQTBBREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $464 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:463.90&airProductToken=AQqfAQozCNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4TEAAWAFqB0VDT05PTVlyCExGQTRPREROCjII1YIBEgMyNzAYrhwgg2ko1aKHAzCEpIcDOExAAVgBagdFQ09OT01ZcghMRkE0T0RETgo0CNWCARIENTgwMhiDaSDiiwEo0KWHAzCcpocDOExAAVgBagdFQ09OT01ZcghMRkE0T0RETgqgAQo0CNWCARIENTUxMxjiiwEgg2ko7e2HAzDE7ocDOFRAAFgBagdFQ09OT01ZcghURkEwQURETgozCNWCARIEMjMyORiDaSCuHCjo74cDMIbxhwM4VEABWAFqB0VDT05PTVlyCFRGQTBBREROCjMI1YIBEgQ0NjA5GK4cIKYMKJXzhwMw2POHAzhUQAFYAWoHRUNPTk9NWXIIVEZBMEFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $466 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:465.70&airProductToken=AQqaAQoxCNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4S0AAWAFqBTJfZWNvcghLRkEyQURETgoxCNWCARIEMTExMxiuHCCDaSiOoocDMMCjhwM4S0AAWAFqBTJfZWNvcghLRkEyQURETgoyCNWCARIENTI5NBiDaSDiiwEo-6OHAzDGpIcDOEtAAFgBagUyX2Vjb3IIS0ZBMkFERE4KmgEKMgjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhUQABYAWoFMl9lY29yCFRGQTBBREROCjEI1YIBEgQyNDMwGINpIK4cKPnuhwMwk_CHAzhUQABYAWoFMl9lY29yCFRGQTBBREROCjEI1YIBEgQ1ODQ5GK4cIKYMKK_xhwMw-PGHAzhUQABYAWoFMl9lY29yCFRGQTBBREROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $480 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:479.91&airProductToken=AQqpAQo2CNWCARIENTI1NRimDCCuHCi7o4cDMI2khwM4TkAAWAFqCjFfYmFzaWNlY29yCEtGQTJBREJOCjYI1YIBEgQyNDk0GK4cIINpKLqkhwMw7KWHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KNwjVggESBDUyMjYYg2kg4osBKKWmhwMw76aHAzhOQABYAWoKMV9iYXNpY2Vjb3IIS0ZBMkFEQk4KqQEKNwjVggESBDUyNDUY4osBIINpKNbwhwMwrvGHAzhOQABYAWoKMV9iYXNpY2Vjb3IIV0FBMk9EQk4KNgjVggESBDEwMjMYg2kgrhwotvKHAzDR84cDOE5AAFgBagoxX2Jhc2ljZWNvcghXQUEyT0RCTgo2CNWCARIENTU0MhiuHCCmDCim9IcDMPH0hwM4TkAAWAFqCjFfYmFzaWNlY29yCFdBQTJPREJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $483 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:482.17&airProductToken=AQqaAQoxCNWCARIENTc4MBimDCCuHCiTn4cDMOmfhwM4TEAAWAFqBTJfZWNvcghMRkE0T0RETgoxCNWCARIEMTA0ORiuHCCDaSiUoIcDMMGhhwM4TEAAWAFqBTJfZWNvcghMRkE0T0RETgoyCNWCARIENDc5NxiDaSDiiwEo7aKHAzC4o4cDOExAAFgBagUyX2Vjb3IITEZBNE9ERE4KmgEKMgjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhUQABYAWoFMl9lY29yCFRGQTBBREROCjEI1YIBEgQyNDMwGINpIK4cKPnuhwMwk_CHAzhUQABYAWoFMl9lY29yCFRGQTBBREROCjEI1YIBEgQ1NDc2GK4cIKYMKO_whwMwuvGHAzhUQABYAWoFMl9lY29yCFRGQTBBREROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $484 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:483.90&airProductToken=AQqgAQozCNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQxMTEzGK4cIINpKI6ihwMwwKOHAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KNAjVggESBDU4MDIYg2kg4osBKNClhwMwnKaHAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KoAEKNAjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhTQABYAWoHRUNPTk9NWXIIU0ZBME9ERE4KMwjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOFNAAVgBagdFQ09OT01ZcghTRkEwT0RETgozCNWCARIENTg0ORiuHCCmDCiv8YcDMPjxhwM4U0ABWAFqB0VDT05PTVlyCFNGQTBPREROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 10 - Tue, Mar 17 GRB Green Bay CPR Casper $489 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GRB,to:CPR,departure:3/10/2026TANYT&leg2=from:CPR,to:GRB,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:488.40&airProductToken=AQqgAQozCNWCARIENTI4NRimDCCuHCiGoYcDMNyhhwM4VEAAWAFqB0VDT05PTVlyCFRGQTBBREROCjMI1YIBEgQyNDk0GK4cIINpKLqkhwMw7KWHAzhUQAFYAWoHRUNPTk9NWXIIVEZBMEFERE4KNAjVggESBDUyMjYYg2kg4osBKKWmhwMw76aHAzhUQAFYAWoHRUNPTk9NWXIIVEZBMEFERE4KoAEKNAjVggESBDU1MTMY4osBIINpKO3thwMwxO6HAzhUQABYAWoHRUNPTk9NWXIIVEZBMEFERE4KMwjVggESBDI0MzAYg2kgrhwo-e6HAzCT8IcDOFRAAVgBagdFQ09OT01ZcghURkEwQURETgozCNWCARIENTQ3NhiuHCCmDCjv8IcDMLrxhwM4VEABWAFqB0VDT05PTVlyCFRGQTBBREROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) __Flights from Green Bay (GRB) to Casper (CPR)__ | Origin airport | Austin Straubel Intl. | | ------------------- | --------------------- | | Destination airport | Natrona County Intl. | | Airlines serving | United | | Roundtrip price | $348 | | Distance | 920 mi | ## Green Bay to Casper Flights The cheapest times to fly from Green Bay to Casper 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 Green Bay to Casper are during the month of March. You can find some of the cheapest flights from Green Bay to Casper with Expedia's search tool and vast selection of airlines. The best time to book a flight from Green Bay to Casper Sunday is one of the best days to book for cheap flights from Green Bay to Casper: 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 Green Bay to Casper 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 Green Bay to Casper in 2026\. You can also book with separate airlines for your outbound and return journeys, from 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 Green Bay to Casper 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 Green Bay to Casper 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. ## Frequently asked questions ### How much does a flight from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR) cost? ### What is the cheapest month to fly from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR)? ### What is the cheapest airline that flies from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR)? ### How many flights per day from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR)? ### What day of the week has the most flights from GRB to CPR? ### What is the best time to fly from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR)? ### Is it cheaper to buy a plane ticket from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR) last-minute? ### Is it cheaper to book a GRB to CPR flight and hotel package? ### Can I cancel or change the date of my flight from Austin Straubel Intl. Airport (GRB) to Natrona County Intl. Airport (CPR)? \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rentals - Other - [Mountain View Hotels ](https://www.expedia.com/Mountain-View-Hotels.d553248634983132935.Travel-Guide-Hotels) - [Casper Hotels ](https://www.expedia.com/Casper-Hotels.d6055899.Travel-Guide-Hotels) - [Mills Hotels ](https://www.expedia.com/Mills-Hotels.d553248634983189503.Travel-Guide-Hotels) - [Bar Nunn Hotels ](https://www.expedia.com/Bar-Nunn-Hotels.d3000462149.Travel-Guide-Hotels) - [Motels in Bar Nunn ](https://www.expedia.com/Bar-Nunn-Motels.d3000462149-aaMotels.Travel-Guide-Accommodation) - [4 Star Hotels in Bar Nunn ](https://www.expedia.com/4Star-Bar-Nunn-Hotels.s40-0-d3000462149.Travel-Guide-Filter-Hotels) - [5 Star Hotels in Bar Nunn ](https://www.expedia.com/5Star-Bar-Nunn-Hotels.s50-0-d3000462149.Travel-Guide-Filter-Hotels) - [Hotels near Fort Casper Museum ](https://www.expedia.com/Fort-Casper-Museum-Hotels.0-l6186094-0.Travel-Guide-Filter-Hotels) - 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