Title: Cheap Flights to Tri-Cities - Expedia.co.uk ![Tri-Cities showing a bridge, a river or creek and views](https://images.trvl-media.com/place/6051514/25758be7-875e-4f86-8d77-40864e834ffb.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6051514/25758be7-875e-4f86-8d77-40864e834ffb.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £402 Cheap Flights to Tri-Cities [View £402 flight on Mon, 8 Dec 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LGW,to:PSC,departure:08/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:401.58&airProductToken=AQqcAQoyCMGCARIENzAxMhjLsQEgzHAoiJT_AjDWmP8COE9AAFgBagVCQVNJQ3IIT0xYNUM1QjQKMgjBggESBDIwMTUYzHAg77kBKNSf_wIwgqL_AjhCQAFYAWoFQkFTSUNyCE9MWDVDNUI0CjIIwYIBEgQ0OTQ0GO-5ASDPFCiIo_8CMLqk_wI4QkABWAFqBUJBU0lDcghPTFg1QzVCNBIKCAIQARgCKgJBQRgBIgQIARABKAIoAygEMAs) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers 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 [Tri-Cities Travel Guide](https://expedia.co.uk/Tri-Cities.dx6051514)[Hotels in Tri-Cities](https://expedia.co.uk/Tri-Cities-Hotels.d6051514.Travel-Guide-Hotels)[Tri-Cities Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Tri-Cities.d6051514.Car-Hire-Guide)[Tri-Cities Holidays](https://expedia.co.uk/Tri-Cities.d6051514.Holidays-City-Breaks) ## Popular airlines - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines - ![Hawaiian Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_HA.svg) Hawaiian Airlines - ![Aeromexico](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AM.svg) Aeromexico - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet - ## Plan, book, fly with confidence - ### Be in the know Get alerts if flight prices drop or rise\* - ### Book smarter Save up to 25% on select hotels after you book a flight\* - ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap round-trip flights to Tri-Cities Prices were available within the past 7 days and start at £402 for one-way flights and £130 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 9 Oct - Mon, 13 Oct LAX Los Angeles PSC Pasco £130 Return found 16 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LAX,to:PSC,departure:09/10/2025TANYT&leg2=from:PSC,to:LAX,departure:13/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:129.90&airProductToken=AQoxCi8IwaYBEgQzNDI2GIu4ASDPFCiz-PkCMNT5-QI4WEAAWAFqAlNWcghPSDJFQVVCTgoxCi8IwaYBEgQzNDY0GM8UIIu4ASion_oCMMmg-gI4WEAAWAFqAlNWcghPSDJFQVVCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Mon, 24 Nov - Thu, 11 Dec LHR London PSC Pasco £526 Return found 19 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:PSC,departure:24/11/2025TANYT&leg2=from:PSC,to:LHR,departure:11/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:525.22&airProductToken=AQpnCjIIwYwBEgQzNTU0GOuJASDMfCi59v0CMNr6_QI4VkAAWAFqBUxJR0hUcghWWTI2REhMSQoxCMGMARIENTczOBjMfCDPFCjZ_P0CMKX-_QI4VkABWAFqBUxJR0hUcghWWTI2REhMSQpnCjEI1qYBEgQyMDU1GM8UIMx8KIi3_wIwvLj_AjhUQABYAWoFTElHSFRyCE9ZMjZES0xJCjII1qYBEgQ0MDQwGMx8IOuJASipu_8CMIm__wI4VEABWAFqBUxJR0hUcghPWTI2REtMSRIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMAE) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Mon, 24 Nov - Thu, 11 Dec LHR London PSC Pasco £526 Return found 19 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:PSC,departure:24/11/2025TANYT&leg2=from:PSC,to:LHR,departure:11/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:525.43&airProductToken=AQpnCjII1qYBEgQ0MDcxGOuJASCSASiE9_0CMPj7_QI4VEAAWAFqBUxJR0hUcghPWTI2REtMSQoxCNamARIEMzQ5NBiSASDPFCie__0CMOX__QI4VEABWAFqBUxJR0hUcghPWTI2REtMSQpnCjEI1qYBEgQyMDU1GM8UIMx8KIi3_wIwvLj_AjhUQABYAWoFTElHSFRyCE9ZMjZES0xJCjII1qYBEgQ0MDQwGMx8IOuJASipu_8CMIm__wI4VEABWAFqBUxJR0hUcghPWTI2REtMSRIKCAEQARgBKgJWUxgBIgQIARABKAIoAygEMAE) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Mon, 24 Nov - Thu, 11 Dec LHR London PSC Pasco £546 Return found 19 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:PSC,departure:24/11/2025TANYT&leg2=from:PSC,to:LHR,departure:11/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:545.22&airProductToken=AQpnCjIIy5gBEgQ2MTExGOuJASDMfCi59v0CMNr6_QI4VkAAWAFqBUxJR0hUcghWWTI2REhMSQoxCMuYARIENjg5MhjMfCDPFCjZ_P0CMKX-_QI4VkABWAFqBUxJR0hUcghWWTI2REhMSQpnCjEIy5gBEgQ2Mzk1GM8UIJIBKKy6_wIw9rr_AjhWQABYAWoFTElHSFRyCFZZMjZESExJCjIIy5gBEgQ0ODE1GJIBIOuJASiovf8CMOLB_wI4VkABWAFqBUxJR0hUcghWWTI2REhMSRIKCAEQARgBKgJLTBgBIgQIARABKAIoAygEMAE) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Sat, 1 Nov - Sat, 8 Nov LHR London PSC Pasco £693 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:PSC,departure:01/11/2025TANYT&leg2=from:PSC,to:LHR,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:692.22&airProductToken=AQpjCi8IwoIBEgI1MxjriQEgkgEo9fL7AjDS9_sCOFFAAFgBagNCQUdyCVFMVzdHMU00UAowCMKCARIENzU4ORiSASDPFCiK-_sCMMf7-wI4UUABWAFqA0JBR3IJUUxXN0cxTTRQCmMKMAjCggESBDc1ODgYzxQgkgEo9cT8AjDFxfwCOE9AAFgBagNCQUdyCU9MVzdHMU00UAovCMKCARICNTIYkgEg64kBKK_H_AIw7sv8AjhPQAFYAWoDQkFHcglPTFc3RzFNNFASCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ## Frequently asked questions ### Can I cancel my flight booking to Tri-Cities due to COVID-19? > In response to these challenging times, many airlines are offering more flexibility. Check out our [Customer Service Portal](https://www.expedia.co.uk/service/?langId=1033) to find important information about cancelling or amending your Tri-Cities flight due to COVID-19. ### What's the best way to find cheap flights to Tri-Cities that have flexible change policies? > Search for bargain flights to Tri-Cities, then click on "No change fee" below the "Flexible change policies" filter. It's as simple as that. We appreciate that plans change and flexibility is important, so book with confidence with Expedia. ### What are some of the general tips for travellers to Tri-Cities during the COVID-19 outbreak? > With the continuation of the COVID-19 outbreak, travelling now comes with a few extra challenges. Keep in mind the following information before hopping on your flight to Tri-Cities: > > - Before committing to anything, see if any travel restrictions apply — in both your origin and destination. Get up-to-date information by checking government travel advisories. > - Keep your face mask on even during airport screening. A TSA officer will require you to temporarily lower your mask to verify your identity. > - Rather than handing a TSA officer your boarding pass, place it directly on the reader yourself. Then, hold it up for inspection. > - TSA is now allowing passengers to take one container of hand sanitizer, up to 12 oz (350 ml) in size, in carry-on baggage. This will have to be removed from your bag at the X-ray machine for screening. > - Place any personal items (e.g, keys, phone and wallet) in your carry-on instead of a bin to minimize handling during screening. > - Separate any food you have for X-ray scanning. Putting it in a clear plastic bag and into a bin reduces the need for a TSA officer to handle and inspect your belongings. > > - Before committing to anything, see if any travel restrictions apply — in both your origin and destination. Get up-to-date information by checking government travel advisories. > - Keep your face mask on even during airport screening. A TSA officer will require you to temporarily lower your mask to verify your identity. > - Rather than handing a TSA officer your boarding pass, place it directly on the reader yourself. Then, hold it up for inspection. > - TSA is now allowing passengers to take one container of hand sanitizer, up to 12 oz (350 ml) in size, in carry-on baggage. This will have to be removed from your bag at the X-ray machine for screening. > - Place any personal items (e.g, keys, phone and wallet) in your carry-on instead of a bin to minimize handling during screening. > - Separate any food you have for X-ray scanning. Putting it in a clear plastic bag and into a bin reduces the need for a TSA officer to handle and inspect your belongings. ### Which airlines fly to Tri-Cities? > Let Alaska Airlines take you there. This renowned carrier schedules 212 flights every month to Tri-Cities Airport (PSC), a Tri-Cities gateway. ### How can I find cheap tickets to Tri-Cities? > You'll always score an awesome deal with Expedia, but our "flexible dates" search function makes it even easier. Enter your preferred travel date, then click on the flexible dates box above to see prices for nearby days. £130 was the lowest price for a flight to Tri-Cities in the last seven days. ### How much is a flight to Tri-Cities? > One-way flights from London (LGW) sold for as little as £402 in the last seven days. During this period, the price of a return ticket to Tri-Cities ranged between £130 and £693. If you find a fantastic deal, book quickly — these fares don't wait around for long. ### What are the most popular airports to fly into in Tri-Cities? > Tri-Cities Airport (PSC) is the main entryway for people travelling to Tri-Cities. Around 594 flights a month touch down here. ### When is the cheapest time to fly to Tri-Cities? > What better way to start the weekend than jetting off on a holiday? Booking your domestic flight for a Saturday could set you up for savings of up to 25%. Mondays usually have the most expensive domestic airfares. For international flights, catch your flight on a Thursday for the highest chance of saving on your airfare. If you're hoping to save money, Sunday flights are frequently found to be the most expensive, so plan around that. ### How much is a plane ticket to Tri-Cities? > In the last seven days, ticket prices to Tri-Cities varied from £130 to £693. ### Which airlines with flights to Tri-Cities employ COVID-19 cleanliness policies? > As travel bans start to lift, airlines are back in the skies with new measures including social distancing and an increased supply of face masks, gloves and sanitizer. Here's what some carriers are doing to ease the spread of COVID-19: > > - Alaska Airlines - this airline is known for providing passenger masks and cleaning with disinfectant. > - Delta - this airline is known for electrostatic cleaning and cleaning with disinfectant. > - United Airlines - this airline is known for providing passenger masks and cleaning with disinfectant. > > - Alaska Airlines - this airline is known for providing passenger masks and cleaning with disinfectant. > - Delta - this airline is known for electrostatic cleaning and cleaning with disinfectant. > - United Airlines - this airline is known for providing passenger masks and cleaning with disinfectant. ### What is the cheapest month to book a flight to Tri-Cities? > The best month for cheap flights to Tri-Cities is October. ## Book with confidence ### Expedia flights to Tri-Cities Searching for cheap flights to Tri-Cities? No travel company presents more choices than Expedia if you're looking to compare flights to Tri-Cities. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Washington. Expedia provides the cheapest flights to many destinations in Washington and you may find even greater savings if you combine your flight with a hotel stay in Tri-Cities. Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast. Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Tri-Cities for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your Tri-Cities flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price. ## Travel information | Destination airport | Tri-Cities | | --- | --- | | Destination airport IATA code | PSC | | Destination city name | Pasco | | Return price | £86 | ## Trending flights to Tri-Cities Prices were available within the past 7 days and start at £402 for one-way flights and £130 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Mon, 24 Nov - Thu, 11 Dec LHR London PSC Pasco £526 Return found 19 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:PSC,departure:24/11/2025TANYT&leg2=from:PSC,to:LHR,departure:11/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:525.22&airProductToken=AQpnCjIIwYwBEgQzNTU0GOuJASDMfCi59v0CMNr6_QI4VkAAWAFqBUxJR0hUcghWWTI2REhMSQoxCMGMARIENTczOBjMfCDPFCjZ_P0CMKX-_QI4VkABWAFqBUxJR0hUcghWWTI2REhMSQpnCjEI1qYBEgQyMDU1GM8UIMx8KIi3_wIwvLj_AjhUQABYAWoFTElHSFRyCE9ZMjZES0xJCjII1qYBEgQ0MDQwGMx8IOuJASipu_8CMIm__wI4VEABWAFqBUxJR0hUcghPWTI2REtMSRIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMAE) ## Explore a world of travel with Expedia - Accommodation - Flights - Packages - Cars - Holiday Homes - [3 Star Hotels in Lowden](https://www.expedia.co.uk/3Star-Lowden-Hotels.s30-0-d3000460941.Travel-Guide-Filter-Hotels) - 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