How does KAYAK find such low prices on flights from District of Columbia to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Seattle. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from District of Columbia to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to District of Columbia with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$139 CHEAP FLIGHTS from District of Columbia to Seattle

SEA

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Cheapest round-trip

$235

Overall average: $486

Alaska Airlines

Fri 12/5Sun 12/7

IAD - SEA • Non-stop

Cheapest non-stop

$234

Typical prices: $351-$632

Hawaiian Airlines

Thu 11/27Thu 12/4

IAD - SEA • Non-stop

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Flight Deals

Cheap Flights from District of Columbia to Seattle

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from District of Columbia to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from District of Columbia to Seattle

Fri, Dec 5 - Sun, Dec 7

7:34 am - 10:35 amIAD-SEA

6h 01mnonstop

10:11 pm - 6:06 amSEA-IAD

4h 55mnonstop

$235Alaska Airlines

Find Deal

Sat, Feb 14 - Wed, Feb 18

5:30 pm - 8:25 pmDCA-SEA

5h 55mnonstop

8:00 am - 4:15 pmSEA-DCA

5h 15mnonstop

$235Alaska Airlines

Find Deal

Wed, Jan 14 - Sun, Jan 18

7:30 am - 10:29 amIAD-SEA

5h 59mnonstop

3:20 pm - 11:10 pmSEA-IAD

4h 50mnonstop

$238Delta

Find Deal

Tue, Nov 11 - Mon, Nov 17

6:00 pm - 12:07 pmDCA-SEA

21h 07m1 stop

8:22 pm - 9:59 pmSEA-DCA

22h 37m2 stops

$238Frontier

Find Deal

Thu, Jan 22 - Sat, Jan 24

7:30 am - 10:29 amIAD-SEA

5h 59mnonstop

3:20 pm - 11:10 pmSEA-IAD

4h 50mnonstop

$239Delta

Find Deal

Mon, Nov 17 - Sun, Nov 23

8:15 am - 12:07 pmDCA-SEA

30h 52m1 stop

12:46 pm - 1:03 pmSEA-DCA

21h 17m1 stop

$243Frontier

Find Deal

Sat, Feb 14 - Sat, Feb 21

5:51 pm - 11:46 pmIAD-SEA

8h 55m1 stop

9:55 am - 5:55 pmSEA-IAD

5h 00mnonstop

$244Hawaiian Airlines

Find Deal

Sat, Feb 14 - Sat, Feb 21

5:10 pm - 10:24 pmDCA-SEA

8h 14m1 stop

1:45 pm - 9:55 pmSEA-DCA

5h 10mnonstop

$247Hawaiian Airlines

Find Deal

Tue, Nov 18 - Mon, Nov 24

6:30 am - 11:28 amIAD-SEA

7h 58m1 stop

8:00 am - 4:07 pmSEA-IAD

5h 07mnonstop

$247United Airlines

Find Deal

Wed, Feb 18 - Sat, Feb 21

5:55 pm - 8:56 pmIAD-SEA

6h 01mnonstop

7:29 pm - 7:07 amSEA-IAD

8h 38m1 stop

$249United Airlines

Find Deal

Useful Info

Low season	January
High season	July
Cheapest flight	$139

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly with an average 15% increase in price.

Flight from Washington Dulles Airport to Seattle

Verified travelerFlew with Alaska AirlinesIAD-SEASep 2024

Pay the money if can afford to upgrade your seats

Verified travelerFlew with Alaska AirlinesIAD-SEAJul 2024

Dulles, like Seattle has a tram. That can be surprising. The TSA at Seattle is notoriously LONG, however, both times in the last year that I have flown, that has not been the case. At Dulles, the TSA lines were efficient as well. The airport interior is well marked for getting around. I did note that the garbages were full in the Southwest and Alaska areas- as we were there 6 hours and had lots of time to notice nit-picky things that nobody else would care about :). It was convenient to have a "charging station" nearby the Alaska waiting area (right across from our gate). It had 3 ports, and I noticed that as soon as I unplugged mine, it was jumped right on. Suggestion- have Dulles add a few more for passengers who need to recharge phones. Great experience, thank you.

PaulFlew with Alaska AirlinesDCA-SEAJun 2024

It's pricier to fly into Reagan (DCA), but if your destination is core DC area, it is well worth it. I used Ubers and Metro; no need to rent a car.

Verified travelerFlew with Alaska AirlinesDCA-SEAJul 2024

Be prepared Seattle is a mess as far as the overwhelming crowds when you land . The bus line to get your rental car is unbelievably long almost 100 people so be prepared once you arrive .

Verified travelerFlew with Alaska AirlinesIAD-SEAMay 2024

Get to the airport early, especially on holidays

How does KAYAK find such low prices on flights from District of Columbia to Seattle?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to Seattle?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Seattle?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lynnwood

Centralia

Fife

Westport

Mukilteo

Lakewood

Lacey

Poulsbo

Edmonds

Aberdeen

Woodinville

Shoreline

DuPont

Monroe

Castle Rock

Edgewood

Everything you need to know for your flight to Seattle

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Cabin class

Complete your trip

Direct Flights

Flights to other cities

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Other airports

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Information on the airport you'll fly into in Seattle

Seattle (SEA)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

SEA

$139 Find Cheap Flights from District of Columbia to Seattle

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

Everything you should know

Cheap Flights from District of Columbia to Seattle

Recent round-trip flight deals from District of Columbia to Seattle

Recent one-way flight deals from District of Columbia to Seattle

Recent last minute flight deals from District of Columbia to Seattle

Recent direct flight deals from District of Columbia to Seattle

Good to know

Flights from District of Columbia to Seattle: the best tips from KAYAK users

FAQs for booking flights from District of Columbia to Seattle

How does KAYAK find such low prices on flights from District of Columbia to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to District of Columbia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Seattle?

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Cabin class types available on flights to District of Columbia

Complete your trip to Seattle with a hotel stay or car rental

Find direct flights for Seattle

Flights to other popular destinations

Flights from domestic origins to Seattle

Choose which airport to fly into in Seattle

Find deals for your return flight