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Cheap flights from Washington to Seattle

51 nonstop flights a week, 7 of them today. Operated by 4 airlines, about 6h 2m in the air, 2,322 mi (3,737 km). Tickets from $175.

Flights from Washington to Seattle

Pick a departure date to see flights and seller prices

We search agencies and airlines for your day: nonstop and connecting flights, baggage, departure and arrival times.

Prices by day: Washington to Seattle

Lowest one-way price in dollars from recent searches, cheap days in green. Press a day to see flights and exact prices.

Filters

Best fares from Washington to Seattle

Lowest one-way prices found by recent searches for the next 120 days; press a card to search that date

Cheapest one-way $175 12 November 2026, nonstop Cheapest nonstop $175 12 November 2026, Alaska Airlines Cheapest in the next 7 days $175 Tomorrow Cheapest weekend departure $203 Sat, 14 November 2026 Cheapest month November 2026 tickets from $175

Washington to Seattle at a glance

flight time, from 5h 35m to 10h 40m
6h 2m
straight-line distance
2,322 mi (3,737 km)
flights a week
51
flights today
7
first and last departure
06:15 - 17:17
lowest price, nonstop, 12 November
$175
average across months
$177
airlines
4

Washington to Seattle ticket prices by month

Lowest one-way fare found by recent searches

Cheapest month: November 2026, tickets from $175. Prices come from searches over the last few days; check the search for your exact date.

The most expensive month is January 2027: from $179. The average across months is $177.

Washington to Seattle flight schedule

51 flights a week, 7 today, 27 seasonal or one-off. Departure and arrival times are local.

FlightDepartsArrivesDurationDaysAircraft
WN 547
Southwest Airlines
06:15 Baltimore/Wash International Thurgood Marshall
12:55 Seattle-Tacoma International
9h 40m
Sat
Boeing 737
AS 409
Alaska Airlines
07:00 Washington Dulles International
09:50 Seattle-Tacoma International
5h 50m
Mon, Fri, Sat, Sun
Boeing 737-800
AS 786
Alaska Airlines
07:00 Baltimore/Wash International Thurgood Marshall
09:55 Seattle-Tacoma International
5h 55m
Mon, Fri, Sat, Sun
Boeing 737-900
DL 1015
Delta
07:00 Washington Dulles International
10:05 Seattle-Tacoma International
6h 5m
Daily
Airbus A220-300
AS 786
Alaska Airlines
07:02 Baltimore/Wash International Thurgood Marshall
09:56 Seattle-Tacoma International
5h 54m
Daily
Boeing 737
AS 409
Alaska Airlines
07:05 Washington Dulles International
09:55 Seattle-Tacoma International
5h 50m
Sun
Boeing 737-900
AS 409
Alaska Airlines
07:46 Washington Dulles International
10:36 Seattle-Tacoma International
5h 50m
Mon, Tue, Wed, Thu, Fri, Sat
Boeing 737-800
AS 1
Alaska Airlines
08:00 Ronald Reagan National, terminal 2
10:55 Seattle-Tacoma International
5h 55m
Daily
Boeing 737
WN 296
Southwest Airlines
08:25 Baltimore/Wash International Thurgood Marshall
16:05 Seattle-Tacoma International
10h 40m
Sat
DL 786
Delta
16:25 Ronald Reagan National, terminal 2
19:27 Seattle-Tacoma International
6h 2m
Daily
Airbus A320
AS 3
Alaska Airlines
17:00 Ronald Reagan National, terminal 2
20:05 Seattle-Tacoma International
6h 5m
Mon, Fri, Sat, Sun
Boeing 737-800
AS 3
Alaska Airlines
17:11 Ronald Reagan National, terminal 2
20:13 Seattle-Tacoma International
6h 2m
Daily
Boeing 737
AS 737
Alaska Airlines
17:16 Washington Dulles International
20:12 Seattle-Tacoma International
5h 56m
Mon, Fri, Sat, Sun
Boeing 737-800
AS 737
Alaska Airlines
17:17 Washington Dulles International
20:13 Seattle-Tacoma International
5h 56m
Daily
Boeing 737-800

Seasonal and one-off flights

Not operating in the next two weeks. The first of them is on 1 December.

FlightDepartsArrivesDurationDaysAircraft
UA 684
United Airlines
15:14 Washington Dulles International
21:58 Seattle-Tacoma International
9h 44m
Seasonal
Boeing 737
AS 3
Alaska Airlines
17:05 Ronald Reagan National, terminal 2
20:22 Seattle-Tacoma International
6h 17m
Seasonal
Boeing 737
AS 737
Alaska Airlines
17:18 Washington Dulles International
20:27 Seattle-Tacoma International
6h 9m
Seasonal
Boeing 737-900
AS 786
Alaska Airlines
07:05 Baltimore/Wash International Thurgood Marshall
10:17 Seattle-Tacoma International
6h 12m
Seasonal
Boeing 737-900
UA 2731
United Airlines
08:50 Washington Dulles International
11:57 Seattle-Tacoma International
6h 7m
Seasonal
Boeing 737-900
AS 737
Alaska Airlines
17:31 Washington Dulles International
20:32 Seattle-Tacoma International
6h 1m
Seasonal
Boeing 737-900
DL 786
Delta
16:50 Ronald Reagan National, terminal 2
20:12 Seattle-Tacoma International
6h 22m
Seasonal
Airbus A320
DL 786
Delta
17:10 Ronald Reagan National, terminal 2
20:32 Seattle-Tacoma International
6h 22m
Seasonal
Airbus A320
DL 1015
Delta
07:05 Washington Dulles International
10:05 Seattle-Tacoma International
6h
Seasonal
Airbus A220-300
DL 786
Delta
16:40 Ronald Reagan National, terminal 2
19:45 Seattle-Tacoma International
6h 5m
Seasonal
Airbus A320
UA 684
United Airlines
15:15 Washington Dulles International
21:59 Seattle-Tacoma International
9h 44m
Seasonal
Boeing 737
AS 737
Alaska Airlines
17:30 Washington Dulles International
20:33 Seattle-Tacoma International
6h 3m
Seasonal
Boeing 737-900
WN 174
Southwest Airlines
10:40 Baltimore/Wash International Thurgood Marshall
16:45 Seattle-Tacoma International
9h 5m
Seasonal
AS 448
Alaska Airlines
07:00 Washington Dulles International
09:48 Seattle-Tacoma International
5h 48m
Seasonal
Boeing 737-900
WN 1030
Southwest Airlines
14:10 Baltimore/Wash International Thurgood Marshall
20:05 Seattle-Tacoma International
8h 55m
Seasonal
Boeing 737-800
AS 3
Alaska Airlines
17:04 Ronald Reagan National, terminal 2
20:04 Seattle-Tacoma International
6h
Seasonal
Boeing 737-800
UA 1128
United Airlines
17:35 Washington Dulles International
20:40 Seattle-Tacoma International
6h 5m
Seasonal
Boeing 737-800
UA 684
United Airlines
15:45 Washington Dulles International
21:56 Seattle-Tacoma International
9h 11m
Seasonal
Boeing 757-300
WN 948
Southwest Airlines
08:45 Baltimore/Wash International Thurgood Marshall
13:20 Seattle-Tacoma International
7h 35m
Seasonal
AS 1782
Alaska Airlines
07:00 Baltimore/Wash International Thurgood Marshall
09:51 Seattle-Tacoma International
5h 51m
Seasonal
Boeing 737-900
AS 1556
Alaska Airlines
10:00 Washington Dulles International
12:48 Seattle-Tacoma International
5h 48m
Seasonal
Boeing 737-900
UA 1700
United Airlines
09:00 Washington Dulles International
11:35 Seattle-Tacoma International
5h 35m
Seasonal
Boeing 737-900
UA 1907
United Airlines
13:10 Washington Dulles International
15:45 Seattle-Tacoma International
5h 35m
Seasonal
Boeing 737-900
WN 1628
Southwest Airlines
13:20 Baltimore/Wash International Thurgood Marshall
16:15 Seattle-Tacoma International
5h 55m
Seasonal
Boeing 737
WN 697
Southwest Airlines
11:05 Baltimore/Wash International Thurgood Marshall
14:00 Seattle-Tacoma International
5h 55m
Seasonal
Boeing 737
WN 1628
Southwest Airlines
15:10 Baltimore/Wash International Thurgood Marshall
18:05 Seattle-Tacoma International
5h 55m
Seasonal
Boeing 737
WN 1628
Southwest Airlines
10:40 Baltimore/Wash International Thurgood Marshall
13:35 Seattle-Tacoma International
5h 55m
Seasonal
Boeing 737

Days of the week are taken from the schedule for the next 14 days; schedules change by season. Seattle is 3 hours behind Washington. The search shows seat availability and the price for your date.

Airlines flying Washington to Seattle

Flights a week by schedule and the cheapest nonstop fare of each airline found by recent searches

Alaska Airlines35 a week Delta14 a week Southwest Airlines2 a week United Airlinesfrom 1 December

Airports

Where flights from Washington to Seattle depart and land

Departure from Washington

Washington Dulles International IAD

21 flights a week, 22 mi (36 km) from the city centre

About the airport
Ronald Reagan National closest to the centreDCA

21 flights a week, terminal 2, 3 mi (5 km) from the city centre

About the airport
Baltimore/Wash International Thurgood Marshall BWI

9 flights a week, 28 mi (45 km) from the city centre

About the airport

Arrival in Seattle

Seattle-Tacoma International SEA

51 flights a week, 11 mi (18 km) from the city centre

About the airport

When to visit Seattle

Weather by month

Best time to visit: May, June, July, August and September, +17° to +25° by day. In November it is +10° by day and +5° at night, with 17 rainy days.

Jan
+8° +2° 16 days
Feb
+8° +2° 14 days
Mar
+11° +4° 15 days
Apr
+13° +6° 14 days
May
+17° +9° 11 days
Jun
+21° +12° 7 days
Jul
+25° +15° 1 days
Aug
+25° +15° 6 days
Sep
+21° +13° 7 days
Oct
+15° +9° 14 days
Nov
+10° +5° 17 days
Dec
+8° +4° 20 days

Daytime and night temperatures in °C, rainy days. Months with the most comfortable weather are in green. Long-term averages.

Frequently asked questions

How long is the flight from Washington to Seattle?
A nonstop flight takes 6 hours 2 minutes on average, from 5h 35m to 10h 40m depending on the flight.
How far is Seattle from Washington?
2,322 mi (3,737 km) in a straight line between the cities.
Which airlines fly nonstop from Washington to Seattle?
Alaska Airlines (35 a week), Delta (14 a week), Southwest Airlines (2 a week) and United Airlines.
How many flights a day are there from Washington to Seattle?
7 flights today and 51 a week, about 7.3 a day on average.
When are the first and last flights from Washington to Seattle?
The first departure is at 06:15 (WN547), the last at 17:17 (AS737). Local time.
What is the cheapest month to fly from Washington to Seattle?
November 2026: tickets from $175. The most expensive is January 2027, from $179.
What is the cheapest upcoming date to fly from Washington to Seattle?
12 November 2026 (Thursday): from $175 one way, nonstop, by recent searches. The search shows the price for your dates.
Which airline is the cheapest from Washington to Seattle?
Alaska Airlines: nonstop tickets from $175 on 12 November by recent searches. Prices change daily, so compare the sellers in the search.
What is the time difference between Washington and Seattle?
Seattle is 3 hours behind Washington. Schedule times on this page are local to each airport.
Which Washington airport do flights to Seattle leave from?
Washington Dulles International (21 a week), Ronald Reagan National (21 a week) and Baltimore/Wash International Thurgood Marshall (9 a week).