Cheap Flights from Baltimore (BWI) to Seattle (SEA)

Frequently Asked Questions

• What are the cheapest flights from Baltimore to Seattle (BWI-SEA)?

  Based on Trip.com data, Delta Air Lines offers one-way fares as low as US$95 on Cheapest nonstop routes (e.g. BWI to SEA on Fri, Apr 10), while American Airlines offers Cheapest nonstop round-trips from US$183 departing on Thu, Mar 26 and returning on Thu, Apr 2.

• Which airlines offer direct flights from Baltimore to Seattle?

  At the moment, you can catch a nonstop flight from Baltimore to Seattle with the following airlines, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Baltimore to Seattle?

  It takes about 5 hours 58 minutes to fly from Baltimore to Seattle.

• When is the best time to book flights from Baltimore to Seattle?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Baltimore to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Baltimore to Seattle?

  Based on Trip.com data in the past 4 weeks, there is 6 flight per week flying from Baltimore to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS379 (20:19)

• How can I find the best deals on flights from Baltimore to Seattle?

  To find best deals on flights from Baltimore to Seattle, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Apr 10, with one-way flights priced at just US$95.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Baltimore (BWI) to Seattle (SEA) the cheapest?

  The cheapest months to fly from Baltimore to Seattle is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Baltimore to Seattle on?

  After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Baltimore to Seattle on February 24, 2026 with American Airlines, with prices starting at US$94.

• Which airports can I fly to for Seattle from Baltimore?

  You can land at any one of the following hubs in Seattle, with Baltimore/Washington International Airport to Seattle-Tacoma International Airport (BWI-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air - Lake Union (LKE) Seattle-Tacoma International Airport (SEA).

• Is there any time difference between Baltimore and Seattle?

  The time difference between Seattle and Baltimore is 3h.

• How do I change or cancel my ticket from Baltimore to Seattle?

  Tickets can only be changed or canceled if permitted by airline policy. 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. However, 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.