Cheap flights from Seattle to Washington, D.C. from $142

If you’re not able to fly to Baltimore in February, then January is your next best option. Flight prices from Seattle to Baltimore during January average around $376.

The cheapest day to depart from Seattle to Baltimore is on a Wednesday. Travelers who choose to depart for Baltimore on a Wednesday will often find tickets for as low as $415. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $588. These prices are subject to change though, so be sure to set up a Price Alert for flights to Baltimore.

Flying to Baltimore from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $496 when looking at flights departing in the evening. Flights in the morning are often more expensive with an average ticket price of $540.

Fly from Seattle/Tacoma Intl to Baltimore/Washington for the best Seattle/Tacoma Intl - Baltimore/Washington flight prices

You are more likely to see cheaper flights to Baltimore from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Baltimore for around $455 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Baltimore from Seattle for as low as $202 on momondo.

There are 4 cabin classes available to choose from on Seattle to Baltimore flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 31% on your flight if you consider stops on a Seattle to Baltimore flight.

As of November 2026, prices for Seattle to Baltimore flights are approximately 42% more expensive when compared to flights at the same time last year.

Southwest, United Airlines, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Baltimore/Washington

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Baltimore from Seattle according to our data. Alaska Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Baltimore. Keep in mind that there are 6 different airlines that fly to Baltimore on a routine basis, so you have a few additional options to choose from.

Minneapolis (MSP) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $338.

Flights connecting via Chicago (MDW) have the shortest average one-way travel time: 6h 20m.

Charlotte (CLT) has the shortest average layover time for this route: 0h 56m.

1 flights are operational daily from Seattle to Baltimore as of November 2026. The most popular departure time for this route is 9:00AM, with 80% of flights per day taking off at noon.

As of November 2026, 10 flights take off from Seattle and land in Baltimore each week. The most common flight departure day for this route is Mon, with 40% of weekly flights taking off on this day.