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Cheap flights from Washington, D.C. Reagan-National Airport to Seattle from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Seattle departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from Washington, D.C. Reagan-National Airport to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Washington, D.C. Reagan-National Airport to Seattle.

Cheap last minute flights

Planning a quick getaway from Washington, D.C. Reagan-National Airport to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Washington, D.C. Reagan-National Airport to Seattle

Find recent round-trip train or bus tickets from Washington, D.C. Reagan-National Airport to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
1:01 pm - 3:45 pmDCA-SEA
29h 44m1 stop
1:36 pm - 12:03 pmSEA-DCA
19h 27m1 stop
$153Frontier
Find Deal
Sat, Feb 1 - Wed, Feb 12
1:01 pm - 3:45 pmDCA-SEA
29h 44m1 stop
3:15 pm - 4:59 pmSEA-DCA
22h 44m1 stop
$158Frontier
Find Deal
Sat, Jan 18 - Mon, Jan 20
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$277Delta
Find Deal
Sat, Mar 29 - Wed, Apr 9
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$282Delta
Find Deal
Tue, Mar 11 - Thu, Mar 13
6:59 am - 12:41 pmDCA-SEA
8h 42m1 stop
11:20 am - 11:34 pmSEA-DCA
9h 14m1 stop
$296American Airlines
Find Deal
Wed, Apr 16 - Wed, Apr 23
5:15 pm - 11:23 pmDCA-SEA
9h 08m1 stop
12:25 am - 10:59 amSEA-DCA
7h 34m1 stop
$297American Airlines
Find Deal
Sat, Feb 15 - Fri, Feb 21
5:29 pm - 8:35 pmDCA-SEA
6h 06mnonstop
2:05 pm - 9:59 pmSEA-DCA
4h 54mnonstop
$317Alaska Airlines
Find Deal
Sat, Jan 25 - Wed, Jan 29
5:32 pm - 8:19 amDCA-SEA
17h 47m1 stop
2:05 pm - 9:59 pmSEA-DCA
4h 54mnonstop
$326Alaska Airlines
Find Deal
Sat, Feb 1 - Wed, Feb 12
3:00 pm - 10:00 pmDCA-SEA
10h 00m1 stop
7:00 am - 4:59 pmSEA-DCA
6h 59m1 stop
$401United Airlines
Find Deal
Tue, Jan 7 - Fri, Jan 31
6:25 am - 3:54 pmDCA-SEA
12h 29m2 stops
10:15 pm - 8:48 amSEA-DCA
7h 33m1 stop
$421United Airlines
Find Deal
Wed, Mar 5 - Sat, Mar 8
7:00 am - 12:46 pmDCA-SEA
8h 46m1 stop
$64Frontier
Find Deal
Sat, Mar 1
1:01 pm - 12:36 pmDCA-SEA
26h 35m1 stop
$68Frontier
Find Deal
Tue, Feb 11
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
$139Delta
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Sat, Mar 22
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
$149Delta
Find Deal
Fri, Jun 13
5:29 pm - 8:35 pmDCA-SEA
6h 06mnonstop
$159Alaska Airlines
Find Deal
Wed, Jan 15
6:20 am - 11:44 amDCA-SEA
8h 24m1 stop
$168United Airlines
Find Deal
Sat, Feb 22
8:00 am - 10:58 amDCA-SEA
5h 58mnonstop
$179Alaska Airlines
Find Deal
Sun, Mar 23
12:00 pm - 9:28 pmDCA-SEA
12h 28m2 stops
$203United Airlines
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Sat, May 3
5:08 pm - 11:09 pmDCA-SEA
9h 01m1 stop
$308American Airlines
Find Deal
Sun, Mar 23
6:30 am - 1:23 pmDCA-SEA
9h 53m1 stop
$378American Airlines
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Sat, Jan 4
7:00 am - 1:10 pmDCA-SEA
9h 10m1 stop
9:36 pm - 12:08 pmSEA-DCA
11h 32m1 stop
$408Frontier
Find Deal
Thu, Dec 26 - Thu, Jan 2
7:00 am - 1:10 pmDCA-SEA
9h 10m1 stop
9:36 pm - 12:01 pmSEA-DCA
11h 25m1 stop
$438Frontier
Find Deal
Mon, Dec 30 - Mon, Jan 6
6:59 pm - 12:57 amDCA-SEA
8h 58m1 stop
9:45 am - 10:52 pmSEA-DCA
10h 07m1 stop
$607American Airlines
Find Deal
Sat, Dec 28 - Sat, Jan 11
6:00 am - 10:45 amDCA-SEA
7h 45m1 stop
6:10 am - 6:12 pmSEA-DCA
9h 02m1 stop
$762Delta
Find Deal
Fri, Dec 27 - Fri, Jan 3
6:00 am - 10:45 amDCA-SEA
7h 45m1 stop
11:55 am - 11:57 pmSEA-DCA
9h 02m1 stop
$812Delta
Find Deal
Fri, Dec 27 - Sat, Jan 4
7:00 am - 12:45 pmDCA-SEA
8h 45m1 stop
12:31 am - 10:59 amSEA-DCA
7h 28m1 stop
$826American Airlines
Find Deal
Mon, Dec 30 - Thu, Jan 2
4:00 pm - 11:34 pmDCA-SEA
10h 34m1 stop
8:20 am - 11:59 pmSEA-DCA
12h 39m2 stops
$931United Airlines
Find Deal
Mon, Dec 30 - Fri, Jan 3
8:00 am - 11:00 amDCA-SEA
6h 00mnonstop
8:24 am - 4:29 pmSEA-DCA
5h 05mnonstop
$948Alaska Airlines
Find Deal
Thu, Dec 26 - Thu, Jan 9
7:30 am - 9:10 pmDCA-SEA
16h 40m2 stops
2:20 pm - 11:59 pmSEA-DCA
6h 39m1 stop
$1,005United Airlines
Find Deal
Fri, Dec 27 - Sat, Jan 4
5:40 pm - 8:44 pmDCA-SEA
6h 04mnonstop
1:59 pm - 9:59 pmSEA-DCA
5h 00mnonstop
$1,098Alaska Airlines
Find Deal
Thu, Dec 26 - Fri, Jan 3
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$277Delta
Find Deal
Wed, Mar 19 - Wed, Mar 26
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$282Delta
Find Deal
Tue, Mar 11 - Thu, Mar 13
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$287Delta
Find Deal
Thu, Mar 20 - Sun, Mar 23
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$292Delta
Find Deal
Fri, May 9 - Mon, May 19
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$297Delta
Find Deal
Fri, Jun 20 - Tue, Jun 24
5:29 pm - 8:35 pmDCA-SEA
6h 06mnonstop
2:05 pm - 9:59 pmSEA-DCA
4h 54mnonstop
$317Alaska Airlines
Find Deal
Sat, Jan 25 - Wed, Jan 29
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$327Delta
Find Deal
Fri, Jun 13 - Sun, Jun 22
8:00 am - 11:04 amDCA-SEA
6h 04mnonstop
2:05 pm - 9:59 pmSEA-DCA
4h 54mnonstop
$338Alaska Airlines
Find Deal
Thu, Jan 23 - Sat, Jan 25
5:25 pm - 8:35 pmDCA-SEA
6h 10mnonstop
2:05 pm - 9:59 pmSEA-DCA
4h 54mnonstop
$340Alaska Airlines
Find Deal
Sat, Feb 15 - Sat, Feb 22
4:40 pm - 7:41 pmDCA-SEA
6h 01mnonstop
7:23 am - 3:29 pmSEA-DCA
5h 06mnonstop
$342Delta
Find Deal
Fri, Mar 21 - Sat, Mar 29

Frontier flights from Washington, D.C. Reagan-National Airport to Seattle

Our best Frontier deals on Washington, D.C. Reagan-National Airport to Seattle flight tickets
Frontier
Feb 1
DCA1:01 pmWashington, D.C. Reagan-National
29h 44m
1 stop
SEA3:45 pmSeattle/Tacoma Intl
Feb 12
SEA1:36 pmSeattle/Tacoma Intl
19h 27m
1 stop
DCA12:03 pmWashington, D.C. Reagan-National
Frontier
Jan 18
DCA1:01 pmWashington, D.C. Reagan-National
29h 44m
1 stop
SEA3:45 pmSeattle/Tacoma Intl
Jan 20
SEA3:15 pmSeattle/Tacoma Intl
22h 44m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
Frontier
Jan 9
DCA1:01 pmWashington, D.C. Reagan-National
28h 18m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
Jan 13
SEA3:15 pmSeattle/Tacoma Intl
27h 41m
1 stop
DCA9:56 pmWashington, D.C. Reagan-National

Alaska Airlines flights from Washington, D.C. Reagan-National Airport to Seattle

Our best Alaska Airlines deals on Washington, D.C. Reagan-National Airport to Seattle flight tickets
Alaska Airlines
Jan 25
DCA5:29 pmWashington, D.C. Reagan-National
6h 06m
SEA8:35 pmSeattle/Tacoma Intl
Jan 29
SEA2:05 pmSeattle/Tacoma Intl
4h 54m
DCA9:59 pmWashington, D.C. Reagan-National
Alaska Airlines
Feb 1
DCA5:32 pmWashington, D.C. Reagan-National
17h 47m
1 stop
SEA8:19 amSeattle/Tacoma Intl
Feb 12
SEA2:05 pmSeattle/Tacoma Intl
4h 54m
DCA9:59 pmWashington, D.C. Reagan-National
Alaska Airlines
Feb 1
DCA5:29 pmWashington, D.C. Reagan-National
6h 06m
SEA8:35 pmSeattle/Tacoma Intl
Feb 3
SEA7:05 pmSeattle/Tacoma Intl
18h 27m
1 stop
DCA4:32 pmWashington, D.C. Reagan-National

See travel insights to Seattle from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $347. If you don’t want to visit Seattle in February, then you should wait until September to fly from Washington, D.C. Reagan-National Airport, when ticket prices are also cheap, with an average price of $351.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Washington, D.C. Reagan-National Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $396. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. Reagan-National Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $476.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Washington, D.C. Reagan-National Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $326 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $455. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. Reagan-National to Seattle/Tacoma Intl flight route?

Fly from Washington, D.C. Reagan-National to Seattle/Tacoma Intl for the best Washington, D.C. Reagan-National - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Washington, D.C. Reagan-National Airport when booking 27 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $481 when searching 27 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $295 in the past 72 hours.

What cabin class options are available on Washington, D.C. Reagan-National to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Washington, D.C. Reagan-National to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Reagan-National Airport to Seattle flights?

You could potentially save up to 53% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Seattle flight.

How have Washington, D.C. Reagan-National Airport to Seattle flight prices changed over time?

As of December 2024, prices for Washington, D.C. Reagan-National Airport to Seattle flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to Seattle (DCA to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Seattle

Best Price Found

$64

Fastest flight time

5h 58m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Washington, D.C. Reagan-National Airport in the past 72 hours is $64. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Seattle found on momondo in the last 72 hours is $153.
The fastest flight from Washington, D.C. Reagan-National Airport to Seattle takes 5h 58m
Direct flights go from Washington, D.C. Reagan-National Airport to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Washington, D.C. Reagan-National to Seattle/Tacoma Intl by plane?

    There are 2322.2 mi between Washington, D.C. Reagan-National and Seattle/Tacoma Intl. Typically, this will take 5h 58m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. Reagan-National Airport to Seattle?

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to Seattle?


Best airlines flying from Washington, D.C. Reagan-National Airport to Seattle

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $138Free CancellationRating
6.1
3,465 reviews
Search Frontier flights
JetBluePriceFrom $248Free CancellationRating
7.4
3,251 reviews
Search JetBlue flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
8.0
8,580 reviews
Search Delta flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,006 reviews
Search United Airlines flights
SouthwestPriceFrom $296Free CancellationRating
8.1
4,758 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $334Free CancellationRating
8.0
9,553 reviews
Search Alaska Airlines flights
  • Alaska Airlines Flights From Washington, D.C. Reagan-National Airport to Seattle

    Across 7 Alaska Airlines flights from Washington, D.C. Reagan-National Airport to Seattle this week, the average price was $600, with the best Alaska Airlines deals starting from $334 round-trip. 9,554 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • United Airlines Flights From Washington, D.C. Reagan-National Airport to Seattle

    The best United Airlines deal for Washington, D.C. Reagan-National Airport to Seattle flight tickets found on momondo in the last 72 hours was $266, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $459 round-trip. United Airlines operates 3 flights out of Washington, D.C. Reagan-National Airport into Seattle in an average week, so prices vary by time and availability. 9,007 United Airlines reviews by users on momondo have scored the airline at 7.4/10.


Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Seattle?

Once all potential Washington, D.C. to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Washington, D.C. and alert you when they change.


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