Whether you're interested in visiting Seattle or Tacoma, flying to Seattle/Tacoma is an adventure in the making.
Book flights from Baltimore/Washington (BWI) to Seattle/Tacoma with Southwest Airlines®. It’s easy to find the Baltimore/Washington International Thurgood Marshall Airport to Seattle-Tacoma International Airport flight to make your booking and travel a breeze. Whether you’re traveling for business or pleasure, solo or with the whole family, you’ll enjoy flying Southwest®. Have flexible travel dates? Plug them into the Low Fare Calendar and see the lowest fares available within your travel window. You may also want to browse Southwest Vacations® to see special offers and package deals on flights, hotels, rental cars, and more.
Explore your options and book your Baltimore/Washington (BWI) to Seattle/Tacoma flight with Southwest today!
|Departing from||Baltimore/Washington International Thurgood Marshall Airport (BWI)|
|Arriving at||Seattle-Tacoma International Airport (SEA)|
*Weekly flights based on DOT published scheduled average flights Monday through Sunday between 7/1/2022 and 7/31/2022. Note: route may not operate every day of the week.
One child over 14 days and under two (2) years of age, not occupying a seat, may be carried free of charge when traveling with an adult (12 years of age or older). Learn more.
Customers flying with a pet are subject to a pet fare. To learn more about traveling with your furry friend, explore the Southwest® pet policy.
Minors under the age of 18 are not permitted to fly unaccompanied on international flights or any itinerary that includes an international flight. Learn more.
Seattle-Tacoma International Airport is almost equidistant from Seattle and Tacoma. Get going!
At Southwest, we know it takes more than great deals on Seattle/Tacoma airfares and convenient scheduling options to make your trip memorable. So from booking to boarding, we offer services and features designed to make your travel from Baltimore/Washington (BWI) to Seattle/Tacoma the best it can be. Learn more about the Southwest® travel experience before you book your flight from Baltimore/Washington International Thurgood Marshall Airport to Seattle-Tacoma International Airport.
Flying with Southwest is simple and fun, no matter which of our dozens of exciting destinations you choose. When you search for your next flight to Seattle/Tacoma, know that you won’t be surprised at checkout. Low fares and no hidden fees. That's Transfarency®. And as always, two bags fly free®3. Want the latest news, information, and promotional offers from Southwest? Sign up to receive email from us. Book your flight today and know that you'll earn Rapid Rewards® points when you fly.
1Available only on WiFi-enabled aircraft. Limited-time offer. Where available.
2Internet access for $8 a day per device on WiFi-enabled aircraft. Price is subject to change. May not be available full duration of flight. In order to provide a top-notch WiFi experience, we prohibit access to certain high-bandwidth applications and websites, including Netflix, HBO GO® and VoIP. We also prohibit access to certain obscene or offensive content.
3First and second checked bags. Weight and size limits apply.
4Fare difference may apply.
5Failure to cancel a reservation at least 10 minutes prior to departure may result in forfeited Travel Funds.