Title: $119 Cheap flights from Missoula to Pasco (MSO to PSC) - Expedia.com ![blue bridge over Columbia river in Tri-cities Washington state](https://images.trvl-media.com/place/2878/9049bec3-53f1-48e4-9f2a-258938982d2f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/2878/9049bec3-53f1-48e4-9f2a-258938982d2f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $119 Cheap Flights from Missoula (MSO) to Pasco (PSC) [View $119 flight on Sat, May 16, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:MSO,to:PSC,departure:5/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:118.20&airProductToken=AQpgCi4IwaYBEgQxNDgxGMx0IJIBKPmRjQMw4ZKNAzhYQABYAWoCU1ZyCE9IMllYVUJOCi4IwaYBEgQyMTQwGJIBIM8UKL2TjQMw_JONAzhYQAFYAWoCU1ZyCE9IMllYVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) - [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 Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) - ![](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:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](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:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,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_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,departure:3/10/2026TANYT&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 Missoula to Pasco (MSO-PSC) Prices were available within the past 7 days and start at $119 for one-way flights and $343 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) Sat, Mar 14 - Wed, Mar 18 MSO Missoula PSC Pasco $343 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/14/2026TANYT&leg2=from:PSC,to:MSO,departure:3/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:343.00&airProductToken=AQpmCiAIxJgBEgQzODA4GMx0IPISKITShwMw5NKHAzhFQABYAQogCMSYARIEMjk5OBjyEiCSASil04cDMK3UhwM4RUABWAEKIAjEmAESBDQwMTcYkgEgzxQo1NSHAzCW1YcDOEVAAVgBCmYKIAjEmAESBDM5OTIYzxQgkgEogf2HAzDH_YcDOEVAAFgBCiAIxJgBEgQxMTY1GJIBIPISKPv-hwMw8_-HAzhFQAFYAQogCMSYARIEMTcyMxjyEiDMdCiigYgDMICCiAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Mar 12 - Wed, Mar 18 MSO Missoula PSC Pasco $363 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/12/2026TANYT&leg2=from:PSC,to:MSO,departure:3/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:363.00&airProductToken=AQpmCiAIxJgBEgQyNzk1GMx0IPISKMi1hwMwsLaHAzhFQABYAQogCMSYARIEMjg3NBjyEiCSASjjtocDMO-3hwM4RUABWAEKIAjEmAESBDM5OTIYkgEgzxQov7iHAzCAuYcDOEVAAVgBCmYKIAjEmAESBDM5OTIYzxQgkgEogf2HAzDH_YcDOEVAAFgBCiAIxJgBEgQxMTY1GJIBIPISKPv-hwMw8_-HAzhFQAFYAQogCMSYARIEMTcyMxjyEiDMdCiigYgDMICCiAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Mon, Mar 16 - Mon, Mar 23 MSO Missoula PSC Pasco $377 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/16/2026TANYT&leg2=from:PSC,to:MSO,departure:3/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:376.42&airProductToken=AQpECiAIyIIBEgQ0OTA2GMx0IJIBKIfjhwMw8eOHAzhVQABYAQogCMiCARIENjg1MxiSASDPFCjt6YcDMKvqhwM4VUABWAEKRAogCMiCARIENjQ1MhjPFCCSASjnt4gDMK64iAM4VUAAWAEKIAjIggESBDY3OTMYkgEgzHQorbmIAzCFuogDOFVAAVgBEgoIARABGAEqAkhBGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Mar 12 - Fri, Mar 20 MSO Missoula PSC Pasco $384 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/12/2026TANYT&leg2=from:PSC,to:MSO,departure:3/20/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.01&airProductToken=AQpmCiAIxJgBEgQyNzk1GMx0IPISKMi1hwMwsLaHAzhFQABYAQogCMSYARIEMjg3NBjyEiCSASjjtocDMO-3hwM4RUABWAEKIAjEmAESBDM5OTIYkgEgzxQov7iHAzCAuYcDOEVAAVgBCmYKIAjEmAESBDM5OTIYzxQgkgEoxpOIAzCMlIgDOEVAAFgBCiAIxJgBEgQxMTY1GJIBIPISKLuViAMws5aIAzhFQAFYAQogCMSYARIEMTcyMxjyEiDMdCjil4gDMMCYiAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Mar 3 - Tue, Mar 17 MSO Missoula PSC Pasco $388 Roundtrip found 14 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,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:387.40&airProductToken=AQplCjEIwaYBEgQyMTM2GMx0IJIBKNfUhgMwttWGAzhYQABYAWoFU0FWRVJyCFNINE9BU0JOCjAIwaYBEgMyMTIYkgEgzxQoidiGAzDH2IYDOFhAAVgBagVTQVZFUnIIU0g0T0FTQk4KZgoxCMGmARIEMzAyNhjPFCCSASic7ocDMOjuhwM4WEAAWAFqBVNBVkVScghRSDJPWFVCTgoxCMGmARIEMjEzOBiSASDMdCi38IcDMI3xhwM4WEABWAFqBVNBVkVScghRSDJPWFVCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMA0) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Mar 17 - Thu, Mar 19 MSO Missoula PSC Pasco $395 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/17/2026TANYT&leg2=from:PSC,to:MSO,departure:3/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:394.70&airProductToken=AQpmCh8IwaYBEgMxMzgYzHQgkgEop-6HAzCR74cDOFhAAFgBCiAIwaYBEgM3NDAYkgEggY0BKPTwhwMwkPKHAzhYQAFYAQohCMGmARIEMzEwMRiBjQEgzxQo7_KHAzCD9IcDOFhAAVgBCkQKIAjBpgESBDI0NDEYzxQgkgEojIWIAzDNhYgDOFhAAFgBCiAIwaYBEgQzMDY0GJIBIMx0KPuGiAMw14eIAzhYQAFYARIKCAEQARgBKgJBUxgBIgQIARABKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, Mar 6 - Fri, Mar 13 MSO Missoula PSC Pasco $398 Roundtrip found 11 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/6/2026TANYT&leg2=from:PSC,to:MSO,departure:3/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:397.40&airProductToken=AQplCjEIwaYBEgQyMTYwGMx0IJIBKNj3hgMwt_iGAzhYQABYAWoFU0FWRVJyCFNINE9BU0JOCjAIwaYBEgMyMTIYkgEgzxQo6fmGAzCn-oYDOFhAAVgBagVTQVZFUnIIU0g0T0FTQk4KZQoxCMGmARIEMjA5MhjPFCCSASjcx4cDMJ7IhwM4WEAAWAFqBVNBVkVScghRSDJPQVVCTgowCMGmARIDMTM5GJIBIMx0KO3IhwMwx8mHAzhYQAFYAWoFU0FWRVJyCFFIMk9BVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwDQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Mar 17 - Fri, Mar 20 MSO Missoula PSC Pasco $403 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/17/2026TANYT&leg2=from:PSC,to:MSO,departure:3/20/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:403.00&airProductToken=AQpmCiAIxJgBEgQyNzk1GMx0IPISKOjthwMw0O6HAzhFQABYAQogCMSYARIEMjg3NBjyEiCSASiD74cDMI_whwM4RUABWAEKIAjEmAESBDM5OTIYkgEgzxQo3_CHAzCh8YcDOEVAAVgBCmYKIAjEmAESBDM5OTIYzxQgkgEoxpOIAzCMlIgDOEVAAFgBCiAIxJgBEgQxMTY1GJIBIPISKLuViAMws5aIAzhFQAFYAQogCMSYARIEMTcyMxjyEiDMdCjil4gDMMCYiAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, Mar 6 - Fri, Mar 13 MSO Missoula PSC Pasco $434 Roundtrip found 11 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/6/2026TANYT&leg2=from:PSC,to:MSO,departure:3/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:433.40&airProductToken=AQplCjEIwaYBEgQyMTYwGMx0IJIBKNj3hgMwt_iGAzhYQABYAWoFU0FWRVJyCFNINE9BU0JOCjAIwaYBEgMyMTIYkgEgzxQo6fmGAzCn-oYDOFhAAVgBagVTQVZFUnIIU0g0T0FTQk4KZgoxCMGmARIEMzAyNhjPFCCSASicwYcDMOjBhwM4WEAAWAFqBVNBVkVScghOSDJPQVNCTgoxCMGmARIEMjEzOBiSASDMdCi3w4cDMI3EhwM4WEABWAFqBVNBVkVScghOSDJPQVNCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMA0) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Mar 3 - Tue, Mar 17 MSO Missoula PSC Pasco $812 Roundtrip found 14 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,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:811.40&airProductToken=AQpqCjMI1YIBEgQxNDM2GMx0IINpKI7VhgMwj9aGAzhXQABYAWoHRUNPTk9NWXIIV0ZBMEFERE4KMwjVggESBDE5MTMYg2kgzxQooteGAzDC2IYDOFdAAVgBagdFQ09OT01ZcghXRkEwT0RETgpqCjMI1YIBEgQxMjgzGM8UIINpKJXuhwMwq--HAzhLQABYAWoHRUNPTk9NWXIIS0ZBMkFERE4KMwjVggESBDUyMjgYg2kgzHQo4fGHAzDw8ocDOEtAAVgBagdFQ09OT01ZcghLRkEyQUREThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![](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_) ## Alternative airports near Pasco Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,departure:3/17/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) PSC Tri-Cities CheapestClosest 4 min [Flights from $388 ](https://www.expedia.com/Flights-Search?leg1=from:MSO,to:PSC,departure:3/3/2026TANYT&leg2=from:PSC,to:MSO,departure:3/17/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) cost? ### What is the cheapest month to fly from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)? ### What is the cheapest airline that flies from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)? ### How many flights per day from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)? ### What day of the week has the most flights from MSO to PSC? ### What is the best time to fly from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)? ### Is it cheaper to buy a plane ticket from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC) last-minute? ### Is it cheaper to book a MSO to PSC flight and hotel package? ### Can I cancel or change the date of my flight from Missoula Intl. Airport (MSO) to Tri-Cities Airport (PSC)? ## Travel information | Origin airport | Missoula Intl. | | ------------------- | ------------------------------ | | Destination airport | Tri-Cities | | Airlines serving | Alaska Airlines, Delta, United | | Roundtrip price | $343 | | Distance | 243 mi | ## Book with confidence # Missoula to Pasco Flights The cheapest times to fly from Missoula to Pasco 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 Missoula to Pasco are during the month of March. You can find some of the cheapest flights from Missoula to Pasco with Expedia's search tool and vast selection of airlines. The best time to book a flight from Missoula to Pasco Sunday is one of the best days to book for cheap flights from Missoula to Pasco: 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 Missoula to Pasco 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 Missoula to Pasco in 2026\. You can also book with separate airlines for your outbound and return journeys, from $119 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 Missoula to Pasco 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 Missoula to Pasco 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 - [Pasco Hotels ](https://www.expedia.com/Pasco-Hotels.d2878.Travel-Guide-Hotels) - [Flights to Pasco ](https://www.expedia.com/Cheap-Flights-To-Pasco.d2878.Travel-Guide-Flights) - [Phoenix to Pasco ](https://www.expedia.com/lp/flights/178298/2878/phoenix-to-pasco) - [Dallas to Pasco ](https://www.expedia.com/lp/flights/178253/2878/dallas-to-pasco) \*Available to One Key members.