Cheap flights from Seattle to Washington, D.C. from $89
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Washington, D.C. departing on 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Seattle to Baltimore
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Southwest flights from Seattle to Baltimore
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How to get the cheapest flight ticket from Seattle to Baltimore
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Baltimore?
If you’re not able to fly to Baltimore in September, then October is your next best option. Flight prices from Seattle to Baltimore during October average around $347.
What is the cheapest day to depart on your flight to Baltimore?
The cheapest day to depart from Seattle to Baltimore is on a Tuesday. Travelers who choose to depart for Baltimore on a Tuesday will often find tickets for as low as $430. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $569. These prices are subject to change though, so be sure to set up a Price Alert for flights to Baltimore.
What is the cheapest time of day to depart on your flight to Baltimore?
Flying to Baltimore from Seattle in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $355 when looking at flights departing in the afternoon. Flights in the morning are often more expensive with an average ticket price of $485.
What is the cheapest Seattle/Tacoma Intl to Baltimore/Washington flight route?
Fly from Seattle/Tacoma Intl to Baltimore/Washington for the best Seattle/Tacoma Intl - Baltimore/Washington flight prices
How far in advance should I book a flight to Baltimore?
You are more likely to see cheaper flights to Baltimore from Seattle when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Baltimore for around $426 when searching 5 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 $319 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to Baltimore/Washington flights?
There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Baltimore/Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Baltimore/Washington?
American Airlines, Delta, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Baltimore/Washington
What airlines fly to Baltimore?
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 51% of people opting to fly with this airline when traveling to Baltimore. Keep in mind that there are 9 different airlines that fly to Baltimore on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Baltimore on average per day?
2 flights are operational daily from Seattle to Baltimore as of June 2025. The most popular departure time for this route is 9:00AM, with 56% of flights per day taking off in the evening.
How many flights depart from Seattle to Baltimore on average per week?
As of June 2025, 15 flights take off from Seattle and land in Baltimore each week. The most common flight departure day for this route is Wed, with 47% of weekly flights taking off on this day.
When to book flights from Seattle to Baltimore
Cheap Seattle to Baltimore (SEA to BWI) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Baltimore
How far is Seattle/Tacoma Intl to Baltimore/Washington by plane?
A flight from Seattle/Tacoma Intl to Baltimore/Washington will travel around 2326.9 mi. By plane, this route typically takes 4h 59m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Baltimore/Washington Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Baltimore/Washington Airport refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Baltimore/Washington Airport?
As of June 2025, there are 8 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Baltimore/Washington Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Baltimore/Washington Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Baltimore/Washington Airport.
What documentation or ID do you need to fly to Baltimore/Washington Airport?
The necessary travel and health documents for your Baltimore/Washington Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Baltimore?
Based on momondo bookings for flights between Seattle and Baltimore, the leading plane model is Boeing 737 MAX 9, making up 24.69% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 17.69%, Boeing 737 with 14.94%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 12.64%.
What is the most popular airline from Seattle to Baltimore?
momondo data reveals that the most frequently booked airline on the route from Seattle to Baltimore is Alaska Airlines, representing 59% of all bookings. The subsequent popular airlines are Delta at 17%, United Airlines at 5%, and Hawaiian Airlines at 5%.
Best airlines flying from Seattle to Baltimore
Compare and see reviews for airlines that fly from Seattle to Baltimore with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $86 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $182 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $199 | Free Cancellation | Rating 7.8 2,494 reviews | |||
| PriceFrom $203 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $206 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $262 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $276 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $304 | Free Cancellation | Rating 8.0 4,287 reviews |
Alaska Airlines Flights From Seattle to Baltimore
Alaska Airlines flight deals from Seattle to Baltimore start from $276 round-trip. Over the 13 Alaska Airlines flights for this route in a normal week, average airfare is usually $477 round-trip - but some users have found much cheaper deals with momondo.
Southwest Flights From Seattle to Baltimore
$304 is the best Southwest flight deal from Seattle to Baltimore found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $421, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,287 user reviews) flies into Baltimore from Seattle 7 times in an average week so prices can vary.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Baltimore?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Baltimore for you.
Can I find flights from Seattle to Baltimore with flexible booking policies on momondo?
Flights from Seattle to Baltimore with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Seattle to Baltimore?
momondo provides multiple filters to help you find the best flight to Baltimore from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Seattle to Baltimore right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Seattle to Baltimore flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.