₩160,300 Cheap Flights from Baltimore (BWI) to Seattle (SEA)

View ₩160,300 flight on Tue, Jun 9, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Baltimore to Seattle (BWI-SEA)

Prices were available within the past 7 days and start at ₩160,300 for one-way flights and ₩524,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩524,100 Roundtrip, found 4 days ago
₩524,100
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩524,100 found 4 days ago
Delta
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩570,700 Roundtrip, found 4 days ago
₩570,700
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩570,700 found 4 days ago
American Airlines
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩599,400 Roundtrip, found 4 days ago
₩599,400
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩599,400 found 4 days ago
Delta
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩600,100 Roundtrip, found 4 days ago
₩600,100
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩600,100 found 4 days ago
United
Tue, Jun 30 - Tue, Jul 7
BWI
Baltimore
SEA
Seattle
₩605,400 Roundtrip, found 4 days ago
₩605,400
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jun 30 from Baltimore to Seattle, returning Tue, Jul 7, priced at ₩605,400 found 4 days ago
Delta
Tue, Jun 30 - Tue, Jul 7
BWI
Baltimore
SEA
Seattle
₩627,900 Roundtrip, found 4 days ago
₩627,900
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jun 30 from Baltimore to Seattle, returning Tue, Jul 7, priced at ₩627,900 found 4 days ago
American Airlines
Tue, Jun 30 - Tue, Jul 7
BWI
Baltimore
SEA
Seattle
₩641,400 Roundtrip, found 4 days ago
₩641,400
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Jun 30 from Baltimore to Seattle, returning Tue, Jul 7, priced at ₩641,400 found 4 days ago
American Airlines
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩645,900 Roundtrip, found 4 days ago
₩645,900
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩645,900 found 4 days ago
United
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩649,000 Roundtrip, found 4 days ago
₩649,000
Roundtrip
found 4 days ago
Select United flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩649,000 found 4 days ago
Delta
Tue, Apr 21 - Mon, May 4
BWI
Baltimore
SEA
Seattle
₩658,700 Roundtrip, found 4 days ago
₩658,700
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Apr 21 from Baltimore to Seattle, returning Mon, May 4, priced at ₩658,700 found 4 days ago

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

February is typically the cheapest month to fly

From ₩242,082 - ₩405,131 per traveler.

Frequently asked questions

How much is a flight from BWI Airport to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from BWI to Sea-Tac Airport was ₩524,100. Fares this good don't stick around for long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from BWI Marshall to Sea-Tac Airport?
The majority of flights can be conveniently canceled online, but whether or not you are charged a fee varies between airlines. If you do need to cancel your trip, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from BWI Airport to SEA 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 BWI Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from BWI Airport to Seattle - Tacoma Intl. Airport (SEA)?
The flight distance between BWI Marshall and Sea-Tac Airport is 3,800 kilometers. Pack yourself a drink, some snacks and a few good podcasts. Keep yourself entertained and the hours will fly by.
Which airlines fly direct from BWI Marshall to SEA?
Flying straight from BWI Airport to Sea-Tac Airport is a cinch with Alaska Airlines (AS). This top airline operates 30 flights every month.
Are BWI Marshall to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from BWI to Seattle - Tacoma Intl. Airport (SEA) at the last minute could be your ticket to an awesome deal. However, it might cost you a whole lot more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
₩524,100
Distance
3725 km
Average flight time
4 hours 51 mins
*Available to Expedia members.