$122 Find Cheap Flights from Baltimore to Seattle - Compare and Save

These are the earliest and latest flight times available from Baltimore to Seattle:

• Earliest: departs at 7:00 am and lands at 1:03 pm
• Latest: departs at 6:45 pm and lands at 12:48 am.

The flight takes about 6h 03m.

Three cabin classes are available on flights from Baltimore to Seattle:

• Economy Class
• Business Class
• First Class

A nonstop flight from Baltimore to Seattle takes 6h 03m, covering 2,327 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Baltimore to Seattle range from $336 to $587, with an average of $457 over the past 12 months. Anything below $336 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 43% above the $457 route average. Book 26 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $186 round-trip via San Diego (SAN), compared to $493 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Alaska Airlines and Southwest. Other aircraft seen on the route include Boeing 737 variants.

Morning is the busiest departure period on Baltimore to Seattle flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $298 to $2,171. That means the highest observed fare was about 7x higher than the lowest one.

Alaska Airlines is the only airline on the Baltimore to Seattle route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from Baltimore to Seattle are currently lower than usual. Average one-way flight prices are about $133, which is 55% below the typical average for this route.

Flights from Baltimore to Seattle usually depart from Baltimore/Washington (BWI) and arrive at Seattle/Tacoma Intl (SEA).

One-stop flights from Baltimore to Seattle most commonly connect through:

• Charlotte Douglas (CLT) - 30% of one-stop connections
• Chicago O'Hare Intl (ORD) - 23% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 11% of one-stop connections
• Denver Intl (DEN) - 7% of one-stop connections

Yes. Flexible dates can save you up to 23% on flights from Baltimore to Seattle. Tuesday is the cheapest departure day at $385 round-trip on average, while Sunday is the most expensive at $499, a difference of $114.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Alaska Airlines operates flights between Baltimore and Seattle.

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 19m, compared with 7h 20m via Nashville Intl (BNA) and 7h 55m via Chicago O'Hare Intl (ORD).

Seattle is 3 hours behind Baltimore (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

Among airlines operating Baltimore to Seattle flights:

• Alaska Airlines: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Alaska Airlines: a cabin bag and a checked bag in Economy Class
• Southwest: a cabin bag and a checked bag in Economy Class
• Hawaiian Airlines: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Yes. If you are traveling with a service animal or a pet who needs to go to the bathroom or get a drink of water, you can take advantage of one of the animal relief areas at BWI, 2 Airside and 2 Landside. The post-security stations are located next to the Terminal B/C connector and just beyond the security checkpoint for Concourses D/E. Both of the pre-security areas are located outside the airport. The first one is in front of the Hourly Garage and the second one is next to the Light Rail Station.

Yes. If you are an active-duty US military service member or dependent, and you wish to refresh, regroup, or reboot before heading out into Seattle, you can take advantage of the USO on the Mezzanine level above Checkpoint #3. This lounge is open on Thursdays from 8:00 am until 12:00 am the next day and on Mondays, Wednesdays, and Saturdays from 8:00 am until 4:00 am the next day. The USO is closed on Tuesdays, Fridays, and Sundays. Some amenities include showers, places to sleep, travel information, a nursery, a big screen TV, internet access, and more.

Yes. BWI has installed Mamava lactation suites in every terminal in the airport. These freestanding 4X8 lactation suites are made of fiberglass and Corian and provide cleanliness and privacy for mothers who want to breastfeed in private or who need to pump. Each Mamava pod includes two benches, a shelf, a coat hook, a mirror, motion-activated lighting, an exhaust fan, an electrical outlet, and a USB port.

Yes. BWI provides wheelchairs, wheelchair assistance, ramps, elevators, lift-equipped buses, accessible restrooms, unisex restrooms, and restrooms that include adult changing stations for an adult and his or her caregiver. BWI also has TDD telephones Video Relay Systems for the hearing impaired.