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>

$140 CHEAP FLIGHTS from Washington to Washington Dulles (IAD)

IAD

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

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Cheapest round-trip

$252

Overall average: $526

United Airlines

Sat 12/6Sun 12/7

SEA - IAD • 1 stop

Cheapest non-stop

$254

Typical prices: $363-$695

United Airlines

Fri 12/12Mon 12/15

SEA - IAD • Non-stop

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We hope you love your trip to Dulles Intl!

Flight Deals

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

Sat, Dec 6 - Sun, Dec 7

9:05 am - 8:44 pmSEA-IAD

8h 39m1 stop

6:00 am - 11:16 amIAD-SEA

8h 16m1 stop

$252United Airlines

Find Deal

Fri, Dec 12 - Mon, Dec 15

8:10 am - 4:18 pmSEA-IAD

5h 08mnonstop

5:55 pm - 8:54 pmIAD-SEA

5h 59mnonstop

$254United Airlines

Find Deal

Thu, Nov 27 - Fri, Dec 5

9:35 am - 5:34 pmSEA-IAD

4h 59mnonstop

5:37 pm - 12:12 amIAD-SEA

9h 35m1 stop

$255Hawaiian Airlines

Find Deal

Thu, Dec 4 - Sat, Dec 6

1:47 pm - 12:01 amSEA-IAD

7h 14m1 stop

5:08 pm - 11:38 pmIAD-SEA

9h 30m1 stop

$256American Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

4:59 pm - 12:54 amSEA-IAD

4h 55mnonstop

7:15 am - 10:19 amIAD-SEA

6h 04mnonstop

$257Delta

Find Deal

Wed, Dec 3 - Fri, Dec 12

5:18 am - 4:14 pmSEA-IAD

7h 56m1 stop

2:16 pm - 8:37 pmIAD-SEA

9h 21m1 stop

$258American Airlines

Find Deal

Tue, Dec 30 - Thu, Jan 22

10:14 pm - 6:13 amSEA-IAD

4h 59mnonstop

6:04 pm - 9:08 pmIAD-SEA

6h 04mnonstop

$262Alaska Airlines

Find Deal

Mon, Nov 24 - Sun, Dec 7

10:24 pm - 6:18 amSEA-IAD

4h 54mnonstop

6:30 pm - 9:30 pmIAD-SEA

6h 00mnonstop

$263Hawaiian Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

8:40 am - 4:36 pmSEA-IAD

4h 56mnonstop

5:37 pm - 12:12 amIAD-SEA

9h 35m1 stop

$264Alaska Airlines

Find Deal

Tue, Nov 18 - Thu, Nov 20

4:59 pm - 12:54 amSEA-IAD

4h 55mnonstop

7:15 am - 10:19 amIAD-SEA

6h 04mnonstop

$277Delta

Find Deal

Useful Info

Low season	February
High season	December
Cheapest flight	$140

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

Most popular time to fly with an average 10% increase in price.

Flight from Seattle 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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Ellicott City

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Everything you need to know for your flight to Dulles Intl

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Complete your trip

Direct Flights

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Origins

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Return flight deals

Information on your arrival and departure airports

Washington Dulles Airport (IAD)

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

IAD

$140 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

Everything you should know

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

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