$100 Find Cheap Flights from Seattle to Washington, D.C. - Compare and Save

These are the earliest and latest flight times available from Seattle to Washington, D.C.:

• Earliest: departs at 7:20 am and lands at 12:23 pm
• Latest: departs at 11:14 pm and lands at 4:17 am.

The flight takes about 5h 03m.

Three cabin classes are available on flights from Seattle to Washington, D.C.:

• Economy Class
• Business Class
• First Class

A nonstop flight from Seattle to Washington, D.C. takes 5h 03m, covering 2,319 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 Seattle to Washington, D.C. range from $334 to $621, with an average of $447 over the past 12 months. Anything below $334 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 80% above the $447 route average. Book 14 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $273 round-trip via Detroit Metropolitan Wayne County (DTW), compared to $454 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

Morning is the busiest departure period on Seattle to Washington, D.C. flights, with 58% of flights leaving in that window. Afternoon departures account for 28%, night flights for 14%, and evening 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 $314 to $1,689. That means the highest observed fare was about 5x higher than the lowest one.

Two airlines offer in-flight Wi-Fi on Seattle to Washington, D.C. flights:

• Alaska Airlines
• Delta

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

One-way fares from Seattle to Washington, D.C. are currently lower than usual. Average one-way flight prices are about $117, which is 62% below the typical average for this route.

Since Washington, D.C. is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Washington, D.C. Reagan-National Airport (DCA) — daily rates from around $23:

• Sixt
• Dollar
• Thrifty
• Alamo
• Budget

Near Washington, D.C. Dulles Intl Airport (IAD) — daily rates from around $24:

• Dollar
• Budget
• Hertz
• Sixt
• Thrifty

Flights from Seattle to Washington, D.C. usually depart from Seattle/Tacoma Intl (SEA) and may arrive at several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).

One-stop flights from Seattle to Washington, D.C. most commonly connect through:

• Denver Intl (DEN) - 31% of one-stop connections
• Chicago O'Hare Intl (ORD) - 30% of one-stop connections
• Chicago Midway (MDW) - 17% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 7% of one-stop connections

Yes. Flexible dates can save you up to 25% on flights from Seattle to Washington, D.C.. Thursday is the cheapest departure day at $420 round-trip on average, while Monday is the most expensive at $557, a difference of $137.

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

3 airlines operate flights between Seattle and Washington, D.C.. The airlines offering nonstop flights on this route include:

• Alaska Airlines
• Delta
• United Airlines

Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 7h 26m, compared with 7h 40m via Detroit Metropolitan Wayne County (DTW) and 7h 42m via Lambert-St Louis (STL).

Washington, D.C. is 3 hours ahead of Seattle (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Washington, D.C. are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. on KAYAK.

Among airlines operating Seattle to Washington, D.C. flights:

• Alaska Airlines: offers extra legroom; offers free seat selection
• Delta: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• American Airlines: 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
• Delta: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class

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

IAD has one on-site hotel. Referred to as Sleepbox Lounge, this hotel is between Gates A6 and A14, near the AeroTrain in Concourse A. You'll have a good rest at this hotel, as it features comfortable rooms.

If you're hungry, you can order food before exiting DCA, as this airport is full of restaurants. Some notable restaurants at this airport include Matsutake Sushi, American Tap Room, District Bar, Custom Burger, Cava Mezze Grill, and Grille District. If you just want snacks, you can visit the retail stores located throughout the airport.

If you want to rent a car once you disembark from your flight at BWI, you'll be able to do so. This is because BWI is connected to an off-site car rental facility that houses branches for reliable car rental agencies like Budget, Hertz, National, Alamo, Avis, Thrifty, and Enterprise. To board the shuttle, you'll use to travel to the airport's car rental facility, and head to the lower level of BWI's main terminal.

SEA has a children's play area. Located between the Central Terminal and Gates A, across from Seattle Taproom, this children's play area features several toys and soft playgrounds. Daily, it operates round-the-clock.