Cheap Flights from Washington D.C., DC to Seattle, WA from $126

One way Round trip

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Return flight: Seattle – Washington D.C.

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On Cheapflightsplus.com you will find 6 direct and 33 connecting flights from Washington D.C. to Seattle. You can compare airfare deals from 5 airlines and multiple travel sites from $126, book and save on cheap plane tickets and last minute offers. Also check out WAS-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Washington D.C. to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $126 (one-way), $216 (round-trip).

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Best Flights from Washington D.C. to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Washington D.C. to Seattle with the lowest price of $126. The fastest direct flight takes 5h 47m and the fastest connecting – 7h 42m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $148 Find flight	18:13 Washington D.C. Dulles International	21:00 Seattle Seattle-Tacoma Intl	5h 47m	Hawaiian Airlines	HA4969
from $163 Find flight	18:13 Washington D.C. Dulles International	21:00 Seattle Seattle-Tacoma Intl	5h 47m	Alaska Airlines	AS406
from $210 Find flight	13:05 Washington D.C. Dulles International	15:53 Seattle Seattle-Tacoma Intl	5h 48m	United Airlines	UA1395
from $210 Find flight	08:45 Washington D.C. Dulles International	11:35 Seattle Seattle-Tacoma Intl	5h 50m	United Airlines	UA2665
from $210 Find flight	22:06 Washington D.C. Dulles International	00:56+1 день Seattle Seattle-Tacoma Intl	5h 50m	United Airlines	UA716
from $210 Find flight	22:09 Washington D.C. Dulles International	00:59+1 день Seattle Seattle-Tacoma Intl	5h 50m	United Airlines	UA2713
from $126 Find flight	18:00 Washington D.C. Ronald Reagan	00:34+1 день Seattle Seattle-Tacoma Intl	9h 34m layover 2h 25m - Denver	Frontier Airlines	F9689 F93405
from $132 Find flight	13:00 Washington D.C. Ronald Reagan	00:34+1 день Seattle Seattle-Tacoma Intl	14h 34m layover 7h 19m - Denver	Frontier Airlines	F9687 F93405
from $157 Find flight	07:00 Washington D.C. Ronald Reagan	00:34+1 день Seattle Seattle-Tacoma Intl	20h 34m layover 13h 27m - Denver	Frontier Airlines	F9685 F93405
from $205 Find flight	08:20 Washington D.C. Dulles International	13:18 Seattle Seattle-Tacoma Intl	7h 58m layover 1h 10m - Denver	United Airlines	UA419 UA690
from $217 Find flight	08:59 Washington D.C. Ronald Reagan	15:10 Seattle Seattle-Tacoma Intl	9h 11m layover 0h 52m - San Diego	Alaska Airlines	AS15 AS1137
from $227 Find flight	18:00 Washington D.C. Ronald Reagan	22:42 Seattle Seattle-Tacoma Intl	7h 42m layover 0h 43m - Chicago	United Airlines	UA2148 UA2211
from $230 Find flight	19:00 Washington D.C. Ronald Reagan	23:59 Seattle Seattle-Tacoma Intl	7h 59m layover 1h 0m - Chicago	United Airlines	UA1193 UA1001
from $250 Find flight	16:10 Washington D.C. Dulles International	23:00 Seattle Seattle-Tacoma Intl	9h 50m layover 1h 43m - Houston	United Airlines	UA606 UA2456
from $292 Find flight	22:34 Washington D.C. Dulles International	08:01+1 день Seattle Seattle-Tacoma Intl	12h 27m layover 5h 33m - Denver	United Airlines	UA495 UA751
from $293 Find flight	13:00 Washington D.C. Ronald Reagan	18:28 Seattle Seattle-Tacoma Intl	8h 28m layover 0h 56m - Newark	United Airlines	UA4442 UA2630

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 13, 2025

Flight Schedule Washington D.C. (District of Columbia) to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from Washington D.C. to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
08:45 — 11:35	08:45 — 11:35 UA2665 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$210
13:05 — 15:53	13:05 — 15:53 UA1395 United Airlines Washington D.C. — Seattle	5h 48m	Find flight from$210
18:13 — 21:00	18:13 — 21:00 HA4969 Hawaiian Airlines Washington D.C. — Seattle	5h 47m	Find flight from$148
18:13 — 21:00	18:13 — 21:00 AS406 Alaska Airlines Washington D.C. — Seattle	5h 47m	Find flight from$163
22:06 — 00:56 +1 day	22:06 — 00:56 UA716 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$210
22:09 — 00:59 +1 day	22:09 — 00:59 UA2713 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$210
06:25 — 11:32	06:25 — 07:39 UA1793 United Airlines Washington D.C. — Chicago 1h 6m stop 08:45 — 11:32 UA1414 United Airlines Chicago — Seattle	8h 7m including layover	Find flight from$327
06:48 — 11:32	06:48 — 08:02 UA708 United Airlines Washington D.C. — Chicago 43m stop 08:45 — 11:32 UA1414 United Airlines Chicago — Seattle	7h 44m including layover	Find flight from$327
07:00 — 00:34 +1 day	07:00 — 09:02 F9685 Frontier Airlines Washington D.C. — Denver 13h 27m stop 22:29 — 00:37 F93405 Frontier Airlines Denver — Seattle	20h 34m including layover	Find flight from$157
07:00 — 12:49	07:00 — 08:22 UA3475 United Airlines Washington D.C. — Newark 1h 18m stop 09:51 — 12:59 UA2364 United Airlines Newark — Seattle	8h 49m including layover	Find flight from$327
08:20 — 13:18	08:30 — 10:17 UA419 United Airlines Washington D.C. — Denver 1h 10m stop 11:28 — 13:28 UA690 United Airlines Denver — Seattle	7h 58m including layover	Find flight from$205
10:24 — 15:42	10:24 — 11:50 AS4017 Alaska Airlines Washington D.C. — Chicago 1h 13m stop 13:03 — 15:42 AS891 Alaska Airlines Chicago — Seattle	8h 18m including layover	Find flight from$4747
12:40 — 15:11 +1 day	12:40 — 14:18 SY224 Sun Country Airlines Washington D.C. — Minneapolis 23h 6m stop 13:24 — 15:11 SY1637 Sun Country Airlines Minneapolis — Seattle	29h 31m including layover	Find flight from$469
13:00 — 00:34 +1 day	13:00 — 14:57 F9687 Frontier Airlines Washington D.C. — Denver 7h 19m stop 22:29 — 00:37 F93405 Frontier Airlines Denver — Seattle	14h 34m including layover	Find flight from$132
14:00 — 18:53	14:00 — 15:16 UA394 United Airlines Washington D.C. — Chicago 54m stop 16:10 — 18:53 UA2278 United Airlines Chicago — Seattle	7h 53m including layover	Find flight from$327
14:56 — 23:00	14:56 — 17:17 UA1807 United Airlines Washington D.C. — Houston 2h 56m stop 20:13 — 23:00 UA2456 United Airlines Houston — Seattle	11h 4m including layover	Find flight from$327
16:10 — 23:00	16:10 — 18:30 UA606 United Airlines Washington D.C. — Houston 1h 43m stop 20:13 — 23:00 UA2456 United Airlines Houston — Seattle	9h 50m including layover	Find flight from$250
17:53 — 00:59 +1 day	17:53 — 20:30 UA1757 United Airlines Washington D.C. — San Francisco 2h 20m stop 22:50 — 00:59 UA573 United Airlines San Francisco — Seattle	10h 6m including layover	Find flight from$934
17:59 — 00:59 +1 day	17:59 — 20:53 UA698 United Airlines Washington D.C. — San Francisco 1h 57m stop 22:50 — 00:59 UA573 United Airlines San Francisco — Seattle	10h including layover	Find flight from$501
18:00 — 00:34 +1 day	18:00 — 20:08 F9689 Frontier Airlines Washington D.C. — Denver 2h 25m stop 17:17 — 19:27 F93405 Frontier Airlines Denver — Seattle	9h 34m including layover	Find flight from$126
19:00 — 23:59	19:00 — 20:16 UA1193 United Airlines Washington D.C. — Chicago 1h stop 21:16 — 23:59 UA1001 United Airlines Chicago — Seattle	7h 59m including layover	Find flight from$230
19:15 — 00:59 +1 day	19:15 — 22:15 UA1960 United Airlines Washington D.C. — San Francisco 35m stop 22:50 — 00:59 UA573 United Airlines San Francisco — Seattle	8h 44m including layover	Find flight from$934
12:40 — 15:03 +1 day	12:40 — 14:18 SY224 Sun Country Airlines Washington D.C. — Minneapolis 1h 48m stop 16:06 — 17:27 SY107 Sun Country Airlines Minneapolis — Las Vegas 18h 49m stop 12:16 — 15:03 NK2327 Spirit Airlines Las Vegas — Seattle	29h 23m including layover	Find flight from$560

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on August 13, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Washington D.C. to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Washington D.C. and Seattle is 3735 miles. Time difference between the cities is 3h. Airplanes depart 06:00 to 22:35 from 2 Washington D.C. airports and arrive 06:00 to 22:35 to 3 Seattle airports. Average flight time is 5h 49m.

The fastest flight 5h 47m
Average flight time 5h 49m
The earliest flight 06:00
The latest flight 22:35
Distance 2321 ml

The cheapest months to travel to Seattle are june (from 107 $), july (from 120 $), august (from 125 $).

The most expensive months are september (from 205 $), october (from 205 $), november (from 181 $).

What is the lowest airfare Washington D.C. to Seattle?

The cheapest plane ticket found by our users is $126. This airfare is for economy class on one-way F9689 flight by Frontier Airlines for August 15, 2025 which leaves Ronald Reagan in Washington D.C. at 18:00 am and arrives at Seattle Seattle-Tacoma Intl at 00:34.

Economy class

$126

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Business class

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First class

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Popular Airlines on the Route

The flight Washington D.C. — Seattle is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 4 departures per week at the price of from $ 163 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 4747.

Direct flights

There are 6 nonstop flights on the route. The fastest direct flight is HA4969 by Hawaiian Airlines takes 5h 47m and the cheapest is F9689 by Frontier Airlines for $148.

AS - Alaska Airlines

from $163

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HA - Hawaiian Airlines

from $148

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UA - United Airlines

from $210

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Connecting Flights

There are 33 flights with layovers on the route. The fastest connecting flight is UA2148 by United Airlines takes 7h 42m and the cheapest is F9689 by Frontier Airlines for $126.

AS - Alaska Airlines

from $217

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F9 - Frontier Airlines

from $126

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SY - Sun Country Airlines

from $469

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UA - United Airlines

from $205

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Airports

You can fly from Washington D.C. to Seattle from 2 airports (Dulles International, Ronald Reagan).

Washington D.C. airports

Dulles International-IAD

from $148
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Ronald Reagan-DCA

from $126
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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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Airplanes

There are flights to Seattle from Washington D.C. by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Washington D.C.

You may also consider searching for discounted plane tickets to some other popular places from Washington D.C. within United States.

Washington D.C. — Seattle

from $57

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Washington D.C. — Boston

from $73

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Washington D.C. — Miami

from $70

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Washington D.C. — Chicago

from $65

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Washington D.C. — Orlando

from $76

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Washington D.C. — Atlanta

from $70

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Washington D.C. — Las Vegas

from $70

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Washington D.C. — Los Angeles

from $57

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Washington D.C. — Tampa

from $78

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Washington D.C. — Nashville

from $68

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Top International Destinations from Washington D.C.

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Washington D.C. — London

from $77

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Washington D.C. — Paris

from $63

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Washington D.C. — Toronto

from $72

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Washington D.C. — Cancun

from $66

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Washington D.C. — Tokyo

from $54

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Washington D.C. — Montreal

from $74

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Washington D.C. — Aruba

from $69

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Washington D.C. — Dubai

from $69

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Washington D.C. — Dublin

from $65

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Washington D.C. — Madrid

from $72

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How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
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That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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