Find flights
When to book
Airlines
FAQs

Cheap flights from Seattle to Baltimore

SEA — BWI
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Baltimore/Washington are usually found in September or January, booked 76 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Seattle to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Baltimore (BWI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 September 2025.

Popular in

December

Cheapest in

September

Average price

C$ 457
Highest demand for flights based on searches. 8% potential increase in price (C$ 74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Best time to book a flight from Seattle to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Baltimore

How far ahead should I book a flight from Seattle to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Baltimore. Price data was last updated on 12 September 2025.

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Baltimore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Baltimore?

Currently, February is the cheapest month in which you can book a flight from Seattle to Baltimore (average of C$ 327). Flying from Seattle to Baltimore in June is currently the most expensive (average of C$ 398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BWI?

Find hourly flight availability from Seattle to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

One of the essential ways to save on airfare from Seattle to Baltimore is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 3% on airfare.

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Baltimore. Reviews last updated 17 September 2025.
Read reviews from past customers who have flown Alaska Airlines from Seattle to Baltimore. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Seattle to Baltimore flight route?

    Within the past month, 9 users have taken a look at flights from Seattle/Tacoma Intl to Baltimore/Washington.

  • What is the cheapest airline to fly from Seattle to Baltimore round-trip?

    Alaska Airlines, at C$ 253, was found to be the cheapest airline from Seattle to Baltimore.. Users have found that Alaska Airlines is 55% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Seattle to Baltimore?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Baltimore on time: Finnair (100%), Alaska Airlines (72%), Hawaiian Airlines (72%).

  • Can I find deals for flights from Seattle to Baltimore that include hotel bookings?

    Yes. In addition to deals on Seattle to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Baltimore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Baltimore.

  • Can I find deals for business class flights from Seattle to Baltimore?

    Yes. Cheapflights offers flight deals from Seattle to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Baltimore?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Baltimore (average of C$ 327). Flying from Seattle to Baltimore in June is currently the most expensive (average of C$ 398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Dulles Intl flights
Seattle to Reagan-National flights
Seattle to Philadelphia flights

Top airline flying from Seattle to Baltimore

Discover the top airline that operate flights from Seattle to Baltimore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 253AverageC$ 573FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Baltimore?

Deals for Seattle to Baltimore flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Baltimore?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Baltimore by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Baltimore with no change fees?

Need flexible booking options for your flight to Baltimore from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Baltimore become cheaper?

Of course! You can now track prices for flights from Seattle to Baltimore and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.