How does KAYAK find such low prices on flights from Washington to Washington Dulles Airport?

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 Washington to Washington Dulles Airport. 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 Washington to Washington Dulles Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Washington 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 Washington to Washington Dulles Airport?

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 Washington Dulles Airport with an airline and back to Washington 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 Washington to Washington Dulles Airport?

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 Washington Dulles Airport from Washington 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>

$144 CHEAP FLIGHTS from Washington to Washington Dulles (IAD)

IAD

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Cheap Flights from Washington to Dulles Intl

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Dulles Intl 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 Washington to Dulles Intl

Thu, Jan 8 - Thu, Jan 22

3:15 pm - 11:16 pmSEA-IAD

5h 01mnonstop

7:00 am - 10:04 amIAD-SEA

6h 04mnonstop

$257Delta

Find Deal

Sun, Jan 4 - Tue, Jan 20

10:14 pm - 6:13 amSEA-IAD

4h 59mnonstop

6:55 pm - 9:40 pmIAD-SEA

5h 45mnonstop

$263Alaska Airlines

Find Deal

Sat, Nov 1 - Mon, Nov 3

12:58 pm - 1:11 amSEA-IAD

33h 13m2 stops

6:18 pm - 12:13 pmIAD-SEA

44h 55m2 stops

$265Frontier

Find Deal

Wed, Nov 12 - Wed, Nov 19

8:00 am - 4:07 pmSEA-IAD

5h 07mnonstop

2:25 pm - 9:13 pmIAD-SEA

9h 48m1 stop

$267United Airlines

Find Deal

Fri, Oct 31 - Sat, Nov 1

5:20 pm - 5:27 amSEA-IAD

9h 07m1 stop

6:30 am - 11:45 amIAD-SEA

8h 15m1 stop

$271United Airlines

Find Deal

Fri, Oct 3 - Sat, Oct 11

6:12 am - 10:56 pmSEA-IAD

37h 44m2 stops

7:15 am - 8:48 amIAD-SEA

52h 33m2 stops

$273Frontier

Find Deal

Fri, Oct 31 - Fri, Nov 7

5:22 am - 5:04 pmSEA-IAD

8h 42m1 stop

2:16 pm - 7:09 pmIAD-SEA

7h 53m1 stop

$278American Airlines

Find Deal

Wed, Nov 12 - Thu, Nov 20

8:10 am - 10:10 pmSEA-IAD

11h 00m2 stops

4:40 pm - 10:55 pmIAD-SEA

9h 15m1 stop

$282Southwest

Find Deal

Mon, Oct 27 - Fri, Oct 31

9:52 pm - 9:55 amPDX-IAD

9h 03m1 stop

8:09 am - 7:27 pmIAD-PDX

14h 18m2 stops

$286American Airlines

Find Deal

Thu, Nov 13 - Tue, Nov 18

5:35 am - 7:00 pmSEA-IAD

10h 25m1 stop

7:40 am - 10:55 pmIAD-SEA

18h 15m2 stops

$293Southwest

Find Deal

Cheapest round-trip

$257

Overall average: $382

Delta

Thu 1/8Thu 1/22

SEA - IAD • Non-stop

Cheapest one-way

$144

Typical prices: $229-238

Alaska Airlines

Thu 12/25

GEG - IAD • 1 stop

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We hope you love your trip to Dulles Intl!

Useful Info

Low season	February
High season	December
Cheapest flight	$144

Best time to beat the crowds with an average 2% drop in price.

Most popular time to fly with an average 12% increase in price.

Flight from Spokane to Washington Dulles Airport

SuzetteFlew with Alaska AirlinesSEA-IADMay 2025

Take a shower before arriving at airport and don't wear perfume at all! Pack bags tight, so boarding is smooth and quick.

DanielFlew with Alaska AirlinesSEA-IADMay 2025

Seatac has gnarly traffic right now, took 35min to get from highway exit to the terminal

How does KAYAK find such low prices on flights from Washington to Washington Dulles Airport?
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 Washington to Washington Dulles Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Washington Dulles Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Washington 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 Washington to Washington Dulles Airport?
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 Washington Dulles Airport with an airline and back to Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Washington Dulles Airport?
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 Washington Dulles Airport from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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Towson

Oxon Hill

Martinsburg

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Charles Town

Ellicott City

Greenbelt

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Colonial Beach

Edgewood

Pikesville

Lutherville Timonium

Stevensville

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Hyattsville

Everything you need to know for your flight to Dulles Intl

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Complete your trip

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Origins

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Information on your arrival and departure airports

Washington Dulles Airport (IAD)

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IAD

$144 Find Cheap Flights from Washington to Washington Dulles Airport

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

Cheap Flights from Washington to Dulles Intl

Recent round-trip flight deals from Washington to Dulles Intl

Recent one-way flight deals from Washington to Dulles Intl

Recent last minute flight deals from Washington to Dulles Intl

Recent direct flight deals from Washington to Dulles Intl

Everything you should know

Good to know

Flights from Washington to Dulles Intl: the best tips from KAYAK users

FAQs for booking Washington to Washington Dulles Airport flights

How does KAYAK find such low prices on flights from Washington to Washington Dulles Airport?

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 Washington to Washington Dulles Airport.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Washington Dulles Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Washington 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 Washington to Washington Dulles Airport?

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 Washington Dulles Airport with an airline and back to Washington with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Washington Dulles Airport?

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 Washington Dulles Airport from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Dulles Intl?

Everything you need to know for your flight to Dulles Intl

Information on your arrival and departure airports

Cabin class types available on flights to Dulles Intl

Complete your trip to Dulles Intl with a hotel stay or car rental

Find direct flights for Dulles Intl

Flights to other popular destinations

Flights from domestic origins to Washington

Choose which airport to fly into in Washington, D.C.

Find deals for your return flight