Title: Cheap Flights from Walla Walla to Seattle (ALW to SEA) - Expedia.co.uk ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Walla Walla (ALW) to Seattle (SEA) - [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 ## Popular airlines from Walla Walla, WA (ALW-Walla Walla Regional) to Seattle-Tacoma International Airport (SEA) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:alw,to:sea,departure:16/11/2025TANYT&leg2=from:sea,to:alw,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:alw,to:sea,departure:16/11/2025TANYT&leg2=from:sea,to:alw,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Hawaiian Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_HA.svg) Hawaiian Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:alw,to:sea,departure:16/11/2025TANYT&leg2=from:sea,to:alw,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"HA"}}]) - ![notification illustration](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\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from Walla Walla (ALW) to Seattle (SEA) Prices were available within the past 7 days and start at for one-way flights and £119 for round trip, for the period specified. 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) Mon, 15 Dec - Mon, 22 Dec ALW Walla Walla SEA Seattle £119 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:15/12/2025TANYT&leg2=from:SEA,to:ALW,departure:22/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:118.70&airProductToken=AQoxCi8IwaYBEgQyMzAwGOCyASCSASjM4_8CMKDk_wI4WEAAWAFqAlNWcghRSDJFQVVCTgoxCi8IwaYBEgQyMjQ1GJIBIOCyASjzuoADMLK7gAM4WEAAWAFqAlNWcghRSDJFQVVCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 11 Dec - Thu, 18 Dec ALW Walla Walla SEA Seattle £142 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:11/12/2025TANYT&leg2=from:SEA,to:ALW,departure:18/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:141.30&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASi7u_8CMI-8_wI4WEAAWAFqAlNWcghRSDJFQVVCTgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4iIADMLeJgAM4WEAAWAFqAlNWcghOSDJFQVNCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, 15 Dec - Mon, 22 Dec ALW Walla Walla SEA Seattle £164 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:15/12/2025TANYT&leg2=from:SEA,to:ALW,departure:22/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:163.80&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASi76P8CMI_p_wI4WEAAWAFqAlNWcghRSDJFQVVCTgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4tYADMLe2gAM4WEAAWAFqAlNWcghTSDRFQVNCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 17 Dec - Wed, 24 Dec ALW Walla Walla SEA Seattle £172 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:17/12/2025TANYT&leg2=from:SEA,to:ALW,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:171.40&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASj7_v8CMM___wI4WEAAWAFqAlNWcghWSDRFQVNCTgoxCi8IwaYBEgQyMjQ1GJIBIOCyASiz0YADMPLRgAM4WEAAWAFqAlNWcghPSDJFWFVCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, 15 Dec - Mon, 22 Dec ALW Walla Walla SEA Seattle £179 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:15/12/2025TANYT&leg2=from:SEA,to:ALW,departure:22/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:178.90&airProductToken=AQoxCi8IwaYBEgQyMzAwGOCyASCSASjM4_8CMKDk_wI4UUAAWAFqAk1BcghRSDJFQVVNTgoxCi8IwaYBEgQyMjQ1GJIBIOCyASjzuoADMLK7gAM4UUAAWAFqAk1BcghRSDJFQVVNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 11 Dec - Thu, 18 Dec ALW Walla Walla SEA Seattle £188 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:11/12/2025TANYT&leg2=from:SEA,to:ALW,departure:18/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:187.50&airProductToken=AQoxCi8IwaYBEgQyMzAwGOCyASCSASjMtv8CMKC3_wI4WEAAWAFqAlNWcghTSDRFQVNCTgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4iIADMLeJgAM4WEAAWAFqAlNWcghOSDJFQVNCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 17 Dec - Wed, 24 Dec ALW Walla Walla SEA Seattle £203 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:17/12/2025TANYT&leg2=from:SEA,to:ALW,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:202.50&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASj7_v8CMM___wI4WEAAWAFqAlNWcghWSDRFQVNCTgoxCi8IwaYBEgQyMTE1GJIBIOCyASi4zIADMPfMgAM4WEAAWAFqAlNWcghOSDJFQVNCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, 15 Dec - Mon, 22 Dec ALW Walla Walla SEA Seattle £226 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:15/12/2025TANYT&leg2=from:SEA,to:ALW,departure:22/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:225.10&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASi76P8CMI_p_wI4UUAAWAFqAk1BcghRSDJFQVVNTgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4tYADMLe2gAM4U0AAWAFqAk1BcghTSDRFQVNNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 17 Dec - Wed, 24 Dec ALW Walla Walla SEA Seattle £233 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:17/12/2025TANYT&leg2=from:SEA,to:ALW,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:232.60&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASj7_v8CMM___wI4VkAAWAFqAk1BcghWSDRFQVNNTgoxCi8IwaYBEgQyMjQ1GJIBIOCyASiz0YADMPLRgAM4T0AAWAFqAk1BcghPSDJFWFVNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, 15 Dec - Mon, 22 Dec ALW Walla Walla SEA Seattle £240 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:15/12/2025TANYT&leg2=from:SEA,to:ALW,departure:22/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:239.10&airProductToken=AQoxCi8IwaYBEgQyMzAwGOCyASCSASjM4_8CMKDk_wI4UUAAWAFqAkZNcghRSDJFQVVNUgoxCi8IwaYBEgQyMjQ1GJIBIOCyASjzuoADMLK7gAM4UUAAWAFqAkZNcghRSDJFQVVNUhIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 11 Dec - Thu, 18 Dec ALW Walla Walla SEA Seattle £248 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:11/12/2025TANYT&leg2=from:SEA,to:ALW,departure:18/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:247.70&airProductToken=AQoxCi8IwaYBEgQyMzAwGOCyASCSASjMtv8CMKC3_wI4U0AAWAFqAk1BcghTSDRFQVNNTgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4iIADMLeJgAM4TkAAWAFqAk1BcghOSDJFQVNNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 17 Dec - Wed, 24 Dec ALW Walla Walla SEA Seattle £263 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:17/12/2025TANYT&leg2=from:SEA,to:ALW,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:262.70&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASj7_v8CMM___wI4VkAAWAFqAk1BcghWSDRFQVNNTgoxCi8IwaYBEgQyMTE1GJIBIOCyASi4zIADMPfMgAM4TkAAWAFqAk1BcghOSDJFQVNNThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 11 Dec - Thu, 18 Dec ALW Walla Walla SEA Seattle £271 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:11/12/2025TANYT&leg2=from:SEA,to:ALW,departure:18/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:270.30&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASi7u_8CMI-8_wI4UUAAWAFqAkZNcghRSDJFQVVNUgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4iIADMLeJgAM4TkAAWAFqAkZNcghOSDJFQVNNUhIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Mon, 15 Dec - Mon, 22 Dec ALW Walla Walla SEA Seattle £293 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:15/12/2025TANYT&leg2=from:SEA,to:ALW,departure:22/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:292.80&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASi76P8CMI_p_wI4UUAAWAFqAkZNcghRSDJFQVVNUgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4tYADMLe2gAM4U0AAWAFqAkZNcghTSDRFQVNNUhIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 17 Dec - Wed, 24 Dec ALW Walla Walla SEA Seattle £304 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:17/12/2025TANYT&leg2=from:SEA,to:ALW,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:303.60&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASj7_v8CMM___wI4VkAAWAFqAkZNcghWSDRFQVNNUgoxCi8IwaYBEgQyMjQ1GJIBIOCyASiz0YADMPLRgAM4T0AAWAFqAkZNcghPSDJFWFVNUhIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 11 Dec - Thu, 18 Dec ALW Walla Walla SEA Seattle £324 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:11/12/2025TANYT&leg2=from:SEA,to:ALW,departure:18/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:324.00&airProductToken=AQoxCi8IwaYBEgQyMzAwGOCyASCSASjMtv8CMKC3_wI4U0AAWAFqAkZNcghTSDRFQVNNUgoxCi8IwaYBEgQyMTE1GJIBIOCyASj4iIADMLeJgAM4TkAAWAFqAkZNcghOSDJFQVNNUhIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 17 Dec - Wed, 24 Dec ALW Walla Walla SEA Seattle £343 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ALW,to:SEA,departure:17/12/2025TANYT&leg2=from:SEA,to:ALW,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:342.30&airProductToken=AQoxCi8IwaYBEgQyMTk2GOCyASCSASj7_v8CMM___wI4VkAAWAFqAkZNcghWSDRFQVNNUgoxCi8IwaYBEgQyMTE1GJIBIOCyASi4zIADMPfMgAM4TkAAWAFqAkZNcghOSDJFQVNNUhIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ## Find the cheapest month to fly from Walla Walla (ALW) to Seattle (SEA) ### February is typically the cheapest month to fly From £57 - £266 per traveller. ## Frequently asked questions ### How much is a flight from Walla Walla Regional Airport (ALW) to SEA? > The lowest price advertised for a round-trip flight from Walla Walla Regional Airport to Seattle - Tacoma Intl. Airport (SEA) is £119. But you better get moving. This figure is taken from fares listed within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Walla Walla Regional Airport (ALW) to Sea-Tac Airport? > Every airline has its own set of terms and conditions. If you decide to cancel your escape, head to our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from Walla Walla Regional Airport (ALW) to Sea-Tac Airport that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ALW to SEA flights, you'll see a "no change fees" filter for you to select. ### How many hours is the flight from Walla Walla Regional Airport to Sea-Tac Airport? > The flight time from ALW to Seattle - Tacoma Intl. Airport (SEA) is a comfortable 1 hour and 8 minutes. If you're lucky, you might just finish an entire movie before touchdown! ### How far is the flight from ALW to SEA? > It's only 340 kilometres between Walla Walla and SeaTac. Chances are you'll spend more time getting to and from the airport than actually flying! ### Which airlines fly direct from ALW to Seattle - Tacoma Intl. Airport (SEA)? > Operating 30 flights each month, Alaska Airlines (AS) is a popular choice when flying directly from Walla Walla Regional Airport (ALW) to Seattle - Tacoma Intl. Airport (SEA). ### Are Walla Walla Regional Airport (ALW) to SEA flight tickets cheaper when they're purchased at the last minute? > Last-minute planners can sometimes score a bargain, with some super cheap fares from Walla Walla Regional Airport to SEA emerging a few weeks before the date of departure. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals regularly — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines advertise prices so far in advance. ## Travel information | Origin airport | Walla Walla Regional | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Return price | £119 | | Distance | 339 km | | Average flight time | 1 hour 12 mins | ## Book with confidence ### Compare flights from Walla Walla to Seattle easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Walla Walla to Seattle. Operating between them flights per day, 17 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Walla Walla Regional to Seattle - Tacoma Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Walla Walla Regional (ALW) to Seattle - Tacoma Intl. (SEA) The easiest way to view the best deals on flights from Walla Walla to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Walla Walla Regional to Seattle - Tacoma Intl. start at just £119 and range up to £343.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Walla Walla and Seattle - booking your flight during December, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Walla Walla to Seattle flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Walla Walla Regional to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. 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