Title: CA $526 Cheap Flights from Columbia (COU) to Seattle (SEA) - Expedia.ca ![](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) # CA $526 Cheap Flights from Columbia (COU) to Seattle (SEA) [View CA $526 flight on Thu, Mar 12, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:COU,to:SEA,departure:12/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:525.70&airProductToken=AQprCjQI1YIBEgQ1ODU3GMKjASCDaSjotocDMPS3hwM4V0AAWAFqB0VDT05PTVlyCFdBQTJBREVOCjMI1YIBEgQyMDEzGINpIJIBKNG6hwMwhbyHAzhLQAFYAWoHRUNPTk9NWXIIS0FKNVBGRE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) - [Roundtrip](?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 Columbia, MO (COU-Columbia Regional) to Seattle-Tacoma International Airport (SEA) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:cou,to:sea,departure:28/10/2025TANYT&leg2=from:sea,to:cou,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:cou,to:sea,departure:28/10/2025TANYT&leg2=from:sea,to:cou,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) ![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 30% 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.ca/login) ## Cheap flights from Columbia (COU) to Seattle (SEA) Prices were available within the past 7 days and start at CA $526 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ## Frequently asked questions ### How much is a flight from COU to Sea-Tac Airport? > Round-trip flights between COU and Sea-Tac Airport start from . This price is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — book now so you don't miss out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from COU to Sea-Tac Airport? > This differs from airline to airline, as each has its own terms and conditions. Head to the [Customer Service Portal](https://www.expedia.ca/helpcenter), where you'll find instructions on how to cancel online. ### How do I find cheap flights from COU to SEA that have flexible change policies? > Flights from Columbia Regional Airport to Sea-Tac Airport with flexible change policies are available with many airlines. Simply use our "No change fees" filter while searching. You'll only need to cover the cost difference between the two flights, without any extra fees to worry about. ### How many hours is the flight from Columbia Regional Airport to SEA? > It takes roughly 6 hours and 23 minutes to jet from Columbia Regional Airport to Sea-Tac Airport. But with some music and a few interesting magazines, the hours will go by quicker. ### How far is the flight from Columbia Regional Airport to Sea-Tac Airport? > It's around 2,600 kilometres from Columbia Regional Airport (COU) to Sea-Tac Airport, so you'll be in your seat for a while. Keep yourself occupied by packing things like a magazine or a gripping book. ### Which airlines fly direct from Columbia Regional Airport (COU) to Seattle - Tacoma Intl. Airport (SEA)? > You won't find any airlines operating directly between Columbia Regional Airport and SEA, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a good way to break up a trip! ### Are Columbia Regional Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute? > Flight prices are constantly going up and down, so not always. While last-minute flight deals between Columbia Regional Airport and SEA are possible, it also makes sense to keep a close eye on prices well before you fly. In fact, some air carriers release their prices up to a year prior to the departure date. Expedia is constantly updating the biggest bargains around, so keep checking back and be ready to book when the price is right. ## Travel information | Origin airport | Columbia Regional | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Distance | 2587 km | ## Book with confidence ### Columbia to Seattle Flights **The easy way to book your flights from Columbia to Seattle**  With Expedia, it’s simple to find and book flights to Seattle from Columbia whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 2 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Columbia to Seattle today, tomorrow, or this week.   **Save dollars with cheap flights from Columbia Regional, COU to Seattle - Tacoma Intl., SEA**  Sort your search results by price to find great deals on your flight from Columbia to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Columbia currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Seattle   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Seattle from Columbia**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today. \*Available to Expedia members.