Cheap Flights from Washington D.C., DC to Seattle, WA from $78

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On Cheapflightsplus.com you will find 21 direct and 144 connecting flights from Washington D.C. to Seattle. You can compare airfare deals from 8 airlines and multiple travel sites from $78, 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: $78 (one-way), $134 (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 $78. The fastest direct flight takes 5h 39m and the fastest connecting – 7h 22m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $108 Find flight	18:13 Washington D.C. Dulles International	21:00 Seattle Seattle-Tacoma Intl	5h 47m	Hawaiian Airlines	HA4969
from $118 Find flight	09:00 Washington D.C. Dulles International	11:43 Seattle Seattle-Tacoma Intl	5h 43m	Alaska Airlines	AS375
from $147 Find flight	06:30 Washington D.C. Dulles International	09:10 Seattle Seattle-Tacoma Intl	5h 40m	Hawaiian Airlines	HA4967
from $149 Find flight	06:30 Washington D.C. Dulles International	09:10 Seattle Seattle-Tacoma Intl	5h 40m	Alaska Airlines	AS308
from $153 Find flight	13:05 Washington D.C. Dulles International	15:53 Seattle Seattle-Tacoma Intl	5h 48m	United Airlines	UA1395
from $178 Find flight	17:00 Washington D.C. Ronald Reagan	19:56 Seattle Seattle-Tacoma Intl	5h 56m	Hawaiian Airlines	HA6703
from $180 Find flight	17:00 Washington D.C. Ronald Reagan	19:56 Seattle Seattle-Tacoma Intl	5h 56m	Alaska Airlines	AS3
from $218 Find flight	08:00 Washington D.C. Ronald Reagan	10:39 Seattle Seattle-Tacoma Intl	5h 39m	Hawaiian Airlines	HA6701
from $220 Find flight	08:00 Washington D.C. Ronald Reagan	10:39 Seattle Seattle-Tacoma Intl	5h 39m	Alaska Airlines	AS1
from $225 Find flight	08:45 Washington D.C. Dulles International	11:35 Seattle Seattle-Tacoma Intl	5h 50m	United Airlines	UA1366
from $78 Find flight	07:40 Washington D.C. Dulles International	14:11 Seattle Seattle-Tacoma Intl	9h 31m layover 1h 34m - Las Vegas	Frontier Airlines	F94277 F92407
from $78 Find flight	18:00 Washington D.C. Ronald Reagan	00:34+1 день Seattle Seattle-Tacoma Intl	9h 34m layover 2h 24m - Denver	Frontier Airlines	F9689 F93405
from $91 Find flight	13:00 Washington D.C. Ronald Reagan	00:34+1 день Seattle Seattle-Tacoma Intl	14h 34m layover 7h 30m - Denver	Frontier Airlines	F9687 F93405
from $96 Find flight	18:00 Washington D.C. Ronald Reagan	23:42 Seattle Seattle-Tacoma Intl	8h 42m layover 1h 31m - Denver	Frontier Airlines	F9689 F94545
from $106 Find flight	07:00 Washington D.C. Ronald Reagan	23:42 Seattle Seattle-Tacoma Intl	19h 42m layover 12h 40m - Denver	Frontier Airlines	F9685 F94545
from $111 Find flight	17:25 Washington D.C. Dulles International	23:44 Seattle Seattle-Tacoma Intl	9h 19m layover 0h 53m - San Diego	Hawaiian Airlines	HA4966 HA6533

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on May 20, 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
06:30 — 09:10	06:30 — 09:10 HA4967 Hawaiian Airlines Washington D.C. — Seattle	5h 40m	Find flight from$147
06:30 — 09:10	06:30 — 09:10 AS308 Alaska Airlines Washington D.C. — Seattle	5h 40m	Find flight from$149
08:00 — 10:39	08:00 — 10:39 HA6701 Hawaiian Airlines Washington D.C. — Seattle	5h 39m	Find flight from$218
08:00 — 10:39	08:00 — 10:39 AS1 Alaska Airlines Washington D.C. — Seattle	5h 39m	Find flight from$220
08:45 — 11:35	08:45 — 11:35 UA2665 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$153
08:45 — 11:35	08:45 — 11:35 UA1366 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$225
09:00 — 11:43	09:00 — 11:43 AS375 Alaska Airlines Washington D.C. — Seattle	5h 43m	Find flight from$118
09:00 — 11:50	09:00 — 11:50 UA1734 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$153
09:00 — 11:39	09:00 — 11:39 HA4968 Hawaiian Airlines Washington D.C. — Seattle	5h 39m	Find flight from$186
09:00 — 11:39	09:00 — 11:39 AS396 Alaska Airlines Washington D.C. — Seattle	5h 39m	Find flight from$189
13:05 — 15:53	13:05 — 15:53 UA1395 United Airlines Washington D.C. — Seattle	5h 48m	Find flight from$153
17:00 — 19:56	17:00 — 19:56 HA6703 Hawaiian Airlines Washington D.C. — Seattle	5h 56m	Find flight from$178
17:00 — 19:56	17:00 — 19:56 AS3 Alaska Airlines Washington D.C. — Seattle	5h 56m	Find flight from$180
17:55 — 20:48	17:55 — 20:48 UA326 United Airlines Washington D.C. — Seattle	5h 53m	Find flight from$153
18:13 — 21:00	18:13 — 21:00 HA4969 Hawaiian Airlines Washington D.C. — Seattle	5h 47m	Find flight from$108
18:13 — 21:00	18:13 — 21:00 AS406 Alaska Airlines Washington D.C. — Seattle	5h 47m	Find flight from$118
18:15 — 21:00	18:15 — 21:00 HA4836 Hawaiian Airlines Washington D.C. — Seattle	5h 45m	Find flight from$186
18:15 — 21:00	18:15 — 21:00 AS351 Alaska Airlines Washington D.C. — Seattle	5h 45m	Find flight from$189
22:06 — 00:56 +1 day	22:06 — 00:56 UA716 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$153
22:09 — 00:59 +1 day	22:09 — 00:59 UA2713 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$153
22:09 — 00:59 +1 day	22:09 — 00:59 UA2136 United Airlines Washington D.C. — Seattle	5h 50m	Find flight from$225
07:00 — 00:34 +1 day	07:00 — 09:02 F9685 Frontier Airlines Washington D.C. — Denver 13h 33m stop 22:29 — 00:37 F93405 Frontier Airlines Denver — Seattle	20h 34m including layover	Find flight from$82
07:40 — 14:11	07:25 — 09:40 F94277 Frontier Airlines Washington D.C. — Las Vegas 1h 34m stop 11:19 — 14:16 F92407 Frontier Airlines Las Vegas — Seattle	9h 31m including layover	Find flight from$78
08:59 — 15:10	08:59 — 11:20 HA7211 Hawaiian Airlines Washington D.C. — San Diego 52m stop 12:12 — 15:10 HA6535 Hawaiian Airlines San Diego — Seattle	9h 11m including layover	Find flight from$152
08:59 — 16:45	08:59 — 11:20 HA7211 Hawaiian Airlines Washington D.C. — San Diego 2h 25m stop 13:45 — 16:45 HA6532 Hawaiian Airlines San Diego — Seattle	10h 46m including layover	Find flight from$152
12:46 — 20:56	12:46 — 14:24 SY224 Sun Country Airlines Washington D.C. — Minneapolis 4h 42m stop 19:06 — 20:56 SY1639 Sun Country Airlines Minneapolis — Seattle	11h 10m including layover	Find flight from$137
12:59 — 19:14	12:59 — 15:14 UA1292 United Airlines Washington D.C. — Houston 1h 11m stop 16:25 — 19:14 UA774 United Airlines Houston — Seattle	9h 15m including layover	Find flight from$151
13:00 — 00:34 +1 day	13:00 — 14:57 F9687 Frontier Airlines Washington D.C. — Denver 7h 30m stop 22:29 — 00:37 F93405 Frontier Airlines Denver — Seattle	14h 34m including layover	Find flight from$91
13:00 — 23:42	13:00 — 15:10 F9687 Frontier Airlines Washington D.C. — Denver 6h 37m stop 21:36 — 23:44 F94545 Frontier Airlines Denver — Seattle	13h 42m including layover	Find flight from$100
15:46 — 08:02 +1 day	12:40 — 14:18 SY224 Sun Country Airlines Washington D.C. — Minneapolis 12h 48m stop 06:12 — 08:02 SY281 Sun Country Airlines Minneapolis — Seattle	19h 16m including layover	Find flight from$132
15:46 — 22:50	12:49 — 14:36 SY224 Sun Country Airlines Washington D.C. — Minneapolis 3h 36m stop 21:00 — 22:45 SY289 Sun Country Airlines Minneapolis — Seattle	10h 4m including layover	Find flight from$159
17:25 — 23:44	17:25 — 19:52 HA4966 Hawaiian Airlines Washington D.C. — San Diego 53m stop 20:45 — 23:44 HA6533 Hawaiian Airlines San Diego — Seattle	9h 19m including layover	Find flight from$111
17:25 — 23:44	17:25 — 19:52 AS507 Alaska Airlines Washington D.C. — San Diego 53m stop 20:45 — 23:44 AS1110 Alaska Airlines San Diego — Seattle	9h 19m including layover	Find flight from$118
18:00 — 00:34 +1 day	18:00 — 20:08 F9689 Frontier Airlines Washington D.C. — Denver 2h 24m stop 17:17 — 19:27 F93405 Frontier Airlines Denver — Seattle	9h 34m including layover	Find flight from$78
18:00 — 23:42	18:00 — 20:04 F9689 Frontier Airlines Washington D.C. — Denver 1h 31m stop 21:36 — 23:44 F94545 Frontier Airlines Denver — Seattle	8h 42m including layover	Find flight from$96
19:00 — 23:59	19:00 — 20:16 UA1193 United Airlines Washington D.C. — Chicago 1h stop 21:16 — 23:59 UA2200 United Airlines Chicago — Seattle	7h 59m including layover	Find flight from$151
10:13 — 16:25 +1 day	10:13 — 12:32 G4252 Allegiant Air Washington D.C. — Austin 4h 2m stop 16:34 — 17:43 NK1656 Spirit Airlines Austin — Las Vegas 19h 57m stop 13:40 — 16:25 NK1681 Spirit Airlines Las Vegas — Seattle	33h 12m including layover	Find flight from$141

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

*Departure and arrival times - local. Updated on May 20, 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 23:15 from 2 Washington D.C. airports and arrive 06:00 to 23:15 to 3 Seattle airports. Average flight time is 5h 47m.

The fastest flight 5h 39m
Average flight time 5h 47m
The earliest flight 06:00
The latest flight 23:15
Distance 2321 ml

The cheapest months to travel to Seattle are june (from 104 $), july (from 117 $), may (from 123 $).

The most expensive months are december (from 283 $), january (from 218 $), february (from 182 $).

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

The cheapest plane ticket found by our users is $78. This airfare is for economy class on one-way F9689 flight by Frontier Airlines for June 6, 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

$78

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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 8 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 21 departures per week at the price of from $ 118 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 4046.

Direct flights

There are 21 nonstop flights on the route. The fastest direct flight is HA4968 by Hawaiian Airlines takes 5h 39m and the cheapest is F9689 by Frontier Airlines for $108.

AS - Alaska Airlines

from $118

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HA - Hawaiian Airlines

from $108

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UA - United Airlines

from $153

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Connecting Flights

There are 144 flights with layovers on the route. The fastest connecting flight is SY224 by Sun Country Airlines takes 7h 22m and the cheapest is F9689 by Frontier Airlines for $78.

AS - Alaska Airlines

from $118

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F9 - Frontier Airlines

from $78

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FI - Icelandair

from $741

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SY - Sun Country Airlines

from $132

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TK - Turkish Airlines

from $1964

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HA - Hawaiian Airlines

from $111

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UA - United Airlines

from $151

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G4 - Allegiant Air

from $141

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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 $78
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Ronald Reagan-DCA

from $78
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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 8 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.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
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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