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Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport flight

Explore the cheapest one-way and round-trip flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport over the next 90 days, with one-way fares from €126 and round-trip from €213. Based on Trip.com's latest 7-day flight data.

Displayed flight fares from Baltimore to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com Price Insights: Flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport

What is the cheapest month for one-way flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?

Data is based on average one-way flight prices from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport in Trip.com's database over the past 12 months.

Based on Trip.com’s data from the past 12 months, if you’re looking for a low-cost one-way ticket from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport, the best time to buy is in February, with an average price of €154. You’ll want to avoid December, when the average price can reach as high as €440.

€440
€297
€154
€11
    Cheapest
  • €187
    Nov
  • €440
    Dec
  • €264
    Jan
  • €154
    Feb
  • €348
    Mar
  • €163
    Apr
  • €337
    May
  • €290
    Jun
  • €276
    Jul
  • €228
    Aug
  • €208
    Sep
  • €158
    Oct

What is the cheapest day of the week to fly from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?

The data is based on the past 12 months and shows the average ticket prices from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport for each day of the week in the Trip.com database.

Based on Trip.com’s data from the past 12 months, the cheapest day to depart from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport is Tuesday, with average fares typically lower than other days. You’ll want to avoid flying on Sunday, as ticket prices are usually the highest that day.

€392
€274
€156
€38
  • €174
    Mon
  • €156
    Tue
  • €301
    Wed
  • €214
    Thu
  • €254
    Fri
  • €324
    Sat
  • €392
    Sun

Which airline offers the cheapest flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?

The cheapest airline flying from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport is Frontier Airlines (from €111) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From €111
Delta Air Lines
From €126
American Airlines
From €128
Alaska Airlines
From €174
United Airlines
From €183
Sun Country Airlines
From €212
Jetblue Airways
From €476

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What is the flight schedule from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?

Check the schedule for flights from Baltimore to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule
  1. AS786

    7:02 AM

    BWI

    5h 54m

    9:56 AM

    SEA

    S M T W T F S
    Search
  2. AS379

    6:15 PM

    BWI

    5h 54m

    9:09 PM

    SEA

    S - - W T - S
    Search
  3. AA2224

    5:00 AM

    BWI

    1h 35m

    Nonstop

    6:35 AM

    CLT

    S M T W T F S
    Search
  4. AA845

    8:15 PM

    CLT

    5h 55m

    Nonstop

    11:10 PM

    SEA

    S M T W T F S
  5. DL2526

    12:00 PM

    BWI

    2h 48m

    Nonstop

    1:48 PM

    MSP

    S - - - - - -
    Search
  6. DL881

    6:25 PM

    MSP

    4h 2m

    Nonstop

    8:27 PM

    SEA

    S M T W T F S
  7. UA504

    6:34 PM

    BWI

    6h 11m

    Nonstop

    9:45 PM

    SFO

    S M - W T F S
    Search
  8. UA5903

    10:35 PM

    SFO

    2h 24m

    Nonstop

    12:59 AM

    SEA

    - - - - T - -
  9. DL2562

    8:10 AM

    BWI

    2h 8m

    Nonstop

    10:18 AM

    ATL

    S M T W T F S
    Search
  10. DL629

    12:00 PM

    ATL

    5h 38m

    Nonstop

    2:38 PM

    SEA

    S M T W T F S
  11. UA2012

    4:10 PM

    BWI

    3h 57m

    Nonstop

    6:07 PM

    DEN

    S M T W T F S
    Search
  12. UA2651

    9:00 PM

    DEN

    2h 59m

    Nonstop

    10:59 PM

    SEA

    - - T W T F S
  13. AA986

    7:16 AM

    BWI

    2h 34m

    Nonstop

    8:50 AM

    ORD

    S M T W T F S
    Search
  14. AA2398

    11:30 AM

    ORD

    4h 50m

    Nonstop

    2:20 PM

    SEA

    S M T W T F S
  15. DL2799

    4:39 PM

    BWI

    2h 3m

    Nonstop

    6:42 PM

    ATL

    S M T W T F S
    Search
  16. DL903

    9:35 PM

    ATL

    5h 34m

    Nonstop

    12:09 AM

    SEA

    S M T W T F S
  17. DL1176

    7:10 AM

    BWI

    5h 1m

    Nonstop

    10:11 AM

    SLC

    S M - W T F S
    Search
  18. DL2921

    1:20 PM

    SLC

    2h 23m

    Nonstop

    2:43 PM

    SEA

    S - - - - - S
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About Baltimore/Washington International Airport and Seattle Tacoma Intl. Airport

Learn about Baltimore/Washington International Airport (BWI) and Seattle Tacoma Intl. Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 3,751.55 km
Cheapest one-way ticket price €126
Cheapest return ticket price €213

FAQs for Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport Flights

  • How long is the flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?

    Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport takes about 5 hours 22 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 2 daily flights from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA).
  • The earliest flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport departs at 07:02, and the last departs at 18:15, with about 2 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around €370 in November, the most expensive month to book this route.
  • The earliest flight departs from Baltimore/Washington International Airport (BWI) at 07:38 and arrives in Seattle Tacoma Intl. Airport (SEA) at 10:30.
  • The latest flight departs from Baltimore/Washington International Airport (BWI) at 19:16 and arrives in Seattle Tacoma Intl. Airport (SEA) at 22:24.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • Hawaiian Airlines is a very popular airline operating an average of 185 flights per month.
  • One-way flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport currently start from €126, and round-trip fares start from €213. The current lowest fare is a Delta Air Lines flight departing on Thu, Dec 31; prices may vary depending on availability.
  • Yes. Alaska Airlines operate direct flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport, with an average flight time of 5 hours 18 minutes, and around 13 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport is €245. Prices may vary depending on the departure date, airline, and availability.
  • Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport operates around 13 weekly flights, mainly by Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Baltimore/Washington International Airport and Seattle Tacoma Intl. Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.