Flights from Washington Flights to Seattle / Tacoma

Direct flights from Washington to Seattle / Tacoma

Did you mean flights from Seattle / Tacoma to Washington?

Last updated on: 08-24-2026

Washington

United States

IAD

Washington Dulles International Airport

Seattle / Tacoma

United States

SEA

Seattle–Tacoma International Airport

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Flight schedule

Distance

2,298 miles · (3,698 km)

Flight time

5 hours and 49 minutes

Airlines

Alaska
Delta
United Airlines

Alliances

Oneworld
SkyTeam
Star Alliance

Classes

Economy
Premium Economy
Business Class
First Class

Aircrafts

Airbus A220-300
Airbus A320-100/200
Boeing 737 MAX 8
Boeing 737 MAX 9
Boeing 737-800
Boeing 737-800 (winglets)
Boeing 737-900
Boeing 737-900 (winglets)

Washington to Seattle / Tacoma Flight Schedule

Scan through all non-stop flights from Washington to Seattle / Tacoma. The full flight schedule below gives an overview of all non-stop flights from IAD to SEA, which includes the daily timetable of every operating airline for the upcoming 12 months.

Note: for airline-specific flight schedules, please scroll further down.

Return schedule

Best time to visit Seattle / Tacoma

What is the best time to visit Seattle / Tacoma?

🌿 🍇 Warm Mediterranean

In Seattle / Tacoma, the summers are known for being warm, long, and dry, with temperatures typically reaching about 30°C (86°F). The area’s breathtaking scenery complements the sun-filled lifestyle, making it a popular destination for visitors all year round who are looking for relaxation, fun by the water, and the beauty of the outdoors.

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Seattle / Tacoma is best explored from mid-spring to summer, specifically between April and September, as most rainfall occurs from October to February.

Seattle / Tacoma

SEA

Airlines flying from Washington to Seattle / Tacoma

Airline-specific flight schedules from Washington to Seattle / Tacoma

In total there are 3 airlines operating nonstop flights from Washington IAD to Seattle / Tacoma SEA. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.

Click an airline below to view their IAD SEA flight schedule.

Alaska (AS)

Delta (DL)

United Airlines (UA)

Alaska flight schedulefrom Washington to Seattle / Tacoma

Alaska is a member of Oneworld

Return schedule

Delta flight schedulefrom Washington to Seattle / Tacoma

Delta is a member of SkyTeam

Return schedule

United Airlines flight schedulefrom Washington to Seattle / Tacoma

United Airlines is a member of Star Alliance

Return schedule

Washington to Seattle / Tacoma Flights

Flights from IAD to SEA are operated 19 times a week, with an average of 3 flights per day. Departure times vary between 07:00 - 18:00. The earliest flight departs at 07:00, the last flight departs at 18:00. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.

You can fly in Economy and Business Class. Premium Economy and First Class are not available on this route (at least not as a non-stop flight).

The fastest direct flight from Washington to Seattle / Tacoma takes 5 hours and 49 minutes. The flight distance between Washington and Seattle / Tacoma is 2,298 miles (or 3,698 km).

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Frequently asked questions - FAQ

How many airports are there in Seattle / Tacoma?

There are 3 airports in Seattle / Tacoma: Seattle–Tacoma International Airport (SEA), Boeing Field/King County Internat (BFI) and Kenmore Air Harbor Seaplane Base (FAA: W55) (LKE).