£111 Cheap Alaska Airlines flights from Baltimore to Seattle (BWI→SEA)

View £111 flight on Wed, 6 May 2026Opens in a new window

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Alaska Airlines flights from Baltimore to Seattle (BWI→SEA)

Prices were available within the past 7 days and start at £111 for one-way flights and £223 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 22 Apr - Wed, 29 Apr
BWI
Baltimore
SEA
Seattle
£223 Return, found 5 days ago
£223
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 22 Apr from Baltimore to Seattle, returning Wed, 29 Apr, priced at £223 found 5 days ago
Alaska Airlines
Fri, 24 Apr - Mon, 27 Apr
BWI
Baltimore
SEA
Seattle
£265 Return, found 1 day ago
£265
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 24 Apr from Baltimore to Seattle, returning Mon, 27 Apr, priced at £265 found 1 day ago
Alaska Airlines
Sat, 25 Apr - Thu, 30 Apr
BWI
Baltimore
SEA
Seattle
£270 Return, found 1 day ago
£270
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 25 Apr from Baltimore to Seattle, returning Thu, 30 Apr, priced at £270 found 1 day ago
Alaska Airlines
Wed, 16 Sept - Mon, 21 Sept
BWI
Baltimore
SEA
Seattle
£283 Return, found 1 day ago
£283
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 16 Sept from Baltimore to Seattle, returning Mon, 21 Sept, priced at £283 found 1 day ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £406
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from £406

Find the cheapest month to fly from Baltimore (BWI) to Seattle (SEA)

February is typically the cheapest month to fly

From £126 - £210 per traveller.

Frequently asked questions

How much is an Alaska Airlines flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA)?
Apply the "Price (lowest to highest)" filter on Expedia to find cheap Alaska Airlines round-trip flights from £223 from BWI to SEA. Affordable one-way tickets from £111 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BWI to SEA with Alaska Airlines?
Alaska Airlines flights to Seattle are often cheaper in the quieter months of January and February. Whether you're searching for a one-way or a return ticket, you could find a better deal then.
Does Alaska Airlines fly nonstop from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA)?
Alaska Airlines has direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA), with 5 departures every week. Simply use the "Nonstop" and "Airline" filters while searching on Expedia to see all direct Alaska Airlines flights to SEA.
How long does it take to fly from BWI to SEA with Alaska Airlines?
On average, it takes 6h 1m to fly nonstop from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA) with Alaska Airlines.
What airports does Alaska Airlines fly into in Seattle?
Alaska Airlines flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA). This is the main entry point to this destination.
What type of plane does Alaska Airlines fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA)?
For the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA) route, Alaska Airlines typically operates Boeing 737 MAX 9 and Boeing 737-900 planes. Keep in mind that last-minute changes are possible for operational reasons, so your flight may be on a different aircraft.
Can I change or cancel my Alaska Airlines flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Seattle - Tacoma Intl. Airport (SEA)?
Depending on your ticket type, a fee may apply if you cancel or reschedule your flight more than 24 hours after it's confirmed. To find flexible fares, select our "Changes included" and "No cancel fee" boxes when you search for flights. For more details on cancelling or changing your reservation, visit "Trips," select your flight and click on "Manage Booking."

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Popular airline
Alaska Airlines
Distance
3725 km
Average flight time
4 hours 22 mins
*Available to Expedia members.