Cheap flights from Baltimore to Seattle from $70

In general, February is the cheapest month to fly from Baltimore to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $307. If you don’t want to visit Seattle in February, then you should wait until January to fly from Baltimore, when ticket prices are also cheap, with an average price of $318.

On average, the least expensive day to fly to Seattle from Baltimore is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $436. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Baltimore because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $565.

Flying to Seattle from Baltimore in the evening is the least expensive time of day to depart. momondo users have found prices as low as $438 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $490. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Seattle from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $384 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Baltimore for as low as $336 on momondo.

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

No. A direct flight is the cheapest option for a flight between Baltimore to Seattle.

As of March 2026, prices for Baltimore to Seattle flights are approximately 7% cheaper when compared to flights at the same time last year.

Southwest is the most popular carrier operating from Baltimore/Washington to Seattle/Tacoma Intl

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Seattle from Baltimore according to our data. Alaska Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $204.

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 9h 02m.

San Francisco (SFO) has the shortest average layover time for this route: 1h 27m.

The number of flights available between Baltimore and Seattle is 1 per day as of March 2026. The most frequent departure time is 6:00PM, with 100% of daily flights leaving in the evening.

The number of flights available between Baltimore and Seattle is 7 per week as of March 2026. The most frequent departure day is Tue, with 29% of weekly flights leaving on this day.