Cheap flights from SEA to IAD (Seattle - Tacoma Intl. to Washington Dulles Intl.)

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Cheap Flights from SEA to IAD starting at $110 One Way, $199 Round Trip

Prices starting at $199 for return flights and $110 for one-way flights to Washington Dulles Intl. were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Feb 20 - Wed, Feb 25
SEA
Seattle
IAD
Washington
$199 Roundtrip, found 3 hours ago
$199
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Fri, Feb 20 from Seattle to Washington, returning Wed, Feb 25, priced at $199 found 3 hours ago
Sat, Mar 7 - Sat, Mar 14
SEA
Seattle
IAD
Washington
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select United flight, departing Sat, Mar 7 from Seattle to Washington, returning Sat, Mar 14, priced at $199 found 1 day ago
Wed, Mar 25 - Tue, Mar 31
SEA
Seattle
IAD
Washington
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Mar 25 from Seattle to Washington, returning Tue, Mar 31, priced at $199 found 4 days ago
Fri, Feb 20 - Tue, Feb 24
SEA
Seattle
IAD
Washington
$202 Roundtrip, found 3 days ago
$202
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Feb 20 from Seattle to Washington, returning Tue, Feb 24, priced at $202 found 3 days ago
Thu, Mar 5 - Tue, Mar 10
SEA
Seattle
IAD
Washington
$202 Roundtrip, found 1 hour ago
$202
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Thu, Mar 5 from Seattle to Washington, returning Tue, Mar 10, priced at $202 found 1 hour ago

Hotel Ideas near Washington Dulles Intl.

Airport Hotels near Washington Dulles Intl.

Hyatt Place Herndon Dulles Airport East

Hyatt Place Herndon Dulles Airport East

3 out of 5
13711 Sayward Blvd Herndon VA
The price is $116 total per night from Jan 26 to Jan 27
$116 total
per night
Jan 26 - Jan 27
Book a stay at this business-friendly hotel in Herndon. Enjoy free breakfast, free WiFi, and a free airport shuttle. Our guests praise the breakfast and the ...
8.2/10 Very Good! (2,688 reviews)
Overnight stay. Friendly staff both check in and check out. Shuttle service was quick and on time

Reviewed on Jan 17, 2026

Hyatt Place Herndon Dulles Airport East
Hyatt Regency Dulles

Hyatt Regency Dulles

4 out of 5
2300 Dulles Corner Blvd Herndon VA
The price is $114 total per night from Feb 6 to Feb 7
$114 total
per night
Feb 6 - Feb 7
Book a stay at this golf hotel in Herndon. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the clean ...
8.8/10 Excellent! (1,543 reviews)
Yes, all exceptional!

Reviewed on Jan 12, 2026

Hyatt Regency Dulles
Washington Dulles Airport Marriott

Washington Dulles Airport Marriott

4 out of 5
45020 Aviation Dr Sterling VA
The price is $164 total per night from Jan 24 to Jan 25
$164 total
per night
Jan 24 - Jan 25
Book a stay at this business-friendly hotel in Sterling. Enjoy an outdoor pool, 2 restaurants, and breakfast (surcharge). Our guests praise the helpful staff ...
8.2/10 Very Good! (1,004 reviews)
Friendly staff

Reviewed on Jan 12, 2026

Washington Dulles Airport Marriott
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Hotels In Washington

Wingate by Wyndham Chantilly / Dulles Airport

Wingate by Wyndham Chantilly / Dulles Airport

3 out of 5
3940 Centerview Dr Chantilly VA
The price is $113 total per night from Jan 21 to Jan 22
$113 total
per night
Jan 21 - Jan 22
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8/10 Very Good! (1,419 reviews)
Classic free breakfast. Expect that. Gets you started. Folgers coffee. Yuk! But hey… the price was awesome and had a spa and work out room that I didn’t use. Free shuttle to airport and park your car out back!

Reviewed on Jan 12, 2026

Wingate by Wyndham Chantilly / Dulles Airport
Holiday Inn Chantilly-Dulles Expo Center by IHG

Holiday Inn Chantilly-Dulles Expo Center by IHG

3 out of 5
4335 Chantilly Shopping Ctr Chantilly VA
The price is $91 total per night from Jan 23 to Jan 24
$91 total
per night
Jan 23 - Jan 24
Book a stay at this business-friendly hotel in Chantilly. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff in our reviews. ...
8.4/10 Very Good! (1,013 reviews)
Clean room and hotel

Reviewed on Jan 10, 2026

Holiday Inn Chantilly-Dulles Expo Center by IHG
Sheraton Pentagon City Hotel

Sheraton Pentagon City Hotel

3.5 out of 5
900 S Orme St Arlington VA
The price is $97 total per night from Jan 23 to Jan 24
$97 total
per night
Jan 23 - Jan 24
Book a stay at this business-friendly hotel in Arlington. Enjoy breakfast (surcharge), a free airport shuttle, and room service. Our guests praise the breakfast ...
8.4/10 Very Good! (2,913 reviews)
Nice place

Reviewed on Jan 15, 2026

Sheraton Pentagon City Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Washington Hotels With Airport Transportation

Wingate by Wyndham Chantilly / Dulles Airport

Wingate by Wyndham Chantilly / Dulles Airport

3 out of 5
3940 Centerview Dr Chantilly VA
The price is $113 total per night from Jan 21 to Jan 22
$113 total
per night
Jan 21 - Jan 22
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8/10 Very Good! (1,419 reviews)
Classic free breakfast. Expect that. Gets you started. Folgers coffee. Yuk! But hey… the price was awesome and had a spa and work out room that I didn’t use. Free shuttle to airport and park your car out back!

Reviewed on Jan 12, 2026

Wingate by Wyndham Chantilly / Dulles Airport
Comfort Suites Dulles Airport

Comfort Suites Dulles Airport

2.5 out of 5
13980 Metrotech Dr Chantilly VA
The price is $91 total per night from Feb 1 to Feb 2
$91 total
per night
Feb 1 - Feb 2
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free parking, and a free airport shuttle. Our guests praise the helpful staff ...
7.6/10 Good! (999 reviews)
Nice hotel, convenient location. Undergoing renovations.

Reviewed on Jan 5, 2026

Comfort Suites Dulles Airport
Hampton Inn Washington-Dulles Int'l Airport South

Hampton Inn Washington-Dulles Int'l Airport South

2.5 out of 5
4050 Westfax Dr Chantilly VA
The price is $97 total per night from Feb 8 to Feb 9
$97 total
per night
Feb 8 - Feb 9
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8.8/10 Excellent! (1,001 reviews)
I want to thank Rebecca for helping us out and keeping us calm while we got stranded by the airport.. She reassured us that shuttle was going to pick us up, she even made sure that the driver knew are names to make sure we were in.. the drivers were amazing super friendly and helpful.. Now this is ...

Reviewed on Jan 14, 2026

Hampton Inn Washington-Dulles Int'l Airport South
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Low Priced Washington Hotels

Fairfield Inn & Suites Dulles Airport Chantilly

Fairfield Inn & Suites Dulles Airport Chantilly

2.5 out of 5
3960 Corsair Ct Chantilly VA
$91 nightly
The price is $105 total per night from Jan 29 to Jan 30
$105 total
Jan 29 - Jan 30
Total with taxes and fees
Stay at this hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms in our reviews. Popular ...
8.4/10 Very Good! (1,001 reviews)
Friendly staff. Very neat place

Reviewed on Jan 18, 2026

Fairfield Inn & Suites Dulles Airport Chantilly
Extended Stay America Suites Washington DC Chantilly Dulles

Extended Stay America Suites Washington DC Chantilly Dulles

2.5 out of 5
14420 Chantilly Crossing Ln Chantilly VA
$92 nightly
The price is $106 total per night from Feb 20 to Feb 21
$106 total
Feb 20 - Feb 21
Total with taxes and fees
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Popular attractions Fair Oaks Mall and Chantilly ...
6.2/10 (471 reviews)
Great

Reviewed on Dec 30, 2025

Extended Stay America Suites Washington DC Chantilly Dulles
Wingate by Wyndham Chantilly / Dulles Airport

Wingate by Wyndham Chantilly / Dulles Airport

3 out of 5
3940 Centerview Dr Chantilly VA
$98 nightly
The price is $113 total per night from Jan 21 to Jan 22
$113 total
Jan 21 - Jan 22
Total with taxes and fees
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8/10 Very Good! (1,419 reviews)
Classic free breakfast. Expect that. Gets you started. Folgers coffee. Yuk! But hey… the price was awesome and had a spa and work out room that I didn’t use. Free shuttle to airport and park your car out back!

Reviewed on Jan 12, 2026

Wingate by Wyndham Chantilly / Dulles Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Family Friendly Hotels in Washington

Hyatt Place Chantilly Dulles Airport-South

Hyatt Place Chantilly Dulles Airport-South

3 out of 5
4994 Westone Plaza Centreville VA
The price is $116 total per night from Jan 30 to Jan 31
$116 total
per night
Jan 30 - Jan 31
Book a stay at this business-friendly hotel in Centreville. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8.4/10 Very Good! (1,001 reviews)
We stay every 3 months for a night. It’s always great

Reviewed on Jan 9, 2026

Hyatt Place Chantilly Dulles Airport-South
Hampton Inn Washington-Dulles Int'l Airport South

Hampton Inn Washington-Dulles Int'l Airport South

2.5 out of 5
4050 Westfax Dr Chantilly VA
The price is $97 total per night from Feb 8 to Feb 9
$97 total
per night
Feb 8 - Feb 9
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8.8/10 Excellent! (1,001 reviews)
I want to thank Rebecca for helping us out and keeping us calm while we got stranded by the airport.. She reassured us that shuttle was going to pick us up, she even made sure that the driver knew are names to make sure we were in.. the drivers were amazing super friendly and helpful.. Now this is ...

Reviewed on Jan 14, 2026

Hampton Inn Washington-Dulles Int'l Airport South
Comfort Suites Dulles Airport

Comfort Suites Dulles Airport

2.5 out of 5
13980 Metrotech Dr Chantilly VA
The price is $91 total per night from Feb 1 to Feb 2
$91 total
per night
Feb 1 - Feb 2
Book a stay at this business-friendly hotel in Chantilly. Enjoy free breakfast, free parking, and a free airport shuttle. Our guests praise the helpful staff ...
7.6/10 Good! (999 reviews)
Nice hotel, convenient location. Undergoing renovations.

Reviewed on Jan 5, 2026

Comfort Suites Dulles Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

SEA to IAD Route Info

Origin Airport
Destination Airport
Number Of Airlines Serving
Distance
Shortest Flight Departure Time
Shortest Flight Departure Date
SEA Address & GPS
Address:
Seattle WA, 98158
United States
IATA Code:
SEA
Longitude:
-122.301732
Latitude:
47.443839
Time Zone:
America/Los_Angeles
IAD Address & GPS
Address:
1 Saarinen Circle
Dulles VA, 20166
United States
IATA Code:
IAD
Longitude:
-77.447735
Latitude:
38.95315
Time Zone:
America/New_York

Frequently asked questions

Are there non-stop flights from Sea-Tac Airport to Washington Dulles Intl. Airport (IAD)?
We're about to make your upcoming trip away even better — there are 3 airlines that will transport you directly from Seattle - Tacoma Intl. Airport (SEA) to IAD. Regular jetsetters recommend these top carriers:

  • Delta Air Lines
  • Alaska Airlines
  • United Airlines

What is the shortest flight from Sea-Tac Airport to Washington Dulles Intl. Airport (IAD)?
Built up some nice frequent flyer points? You might like to use them to upgrade to a seat with more legroom on your Seattle to Washington journey. With a minimum flight duration of 13 hours and 17 minutes, it's a good idea to be as comfortable as you can.
How many hours flight from Sea-Tac Airport to IAD?
From SEA to IAD, you'll be in your plane seat for approximately 13 hours and 20 minutes. Get cozy, order a glass of Champagne and put on your noise-canceling headphones. It's time to binge-watch some awesome TV shows.
What airlines have the most flights from Sea-Tac Airport to Washington Dulles Intl. Airport (IAD)?
Taking off on a vacation is one of life's greatest pleasures, but how you get to your destination should be equally as enjoyable. Book your SEA to Dulles Intl. Airport flight with Delta Air Lines (DL). One of the most popular airlines, it offers 91 flights on this route every month. Alternatively, reserve your favorite window (or aisle) seat with Alaska Airlines (AS). You'll have 45 monthly flights between Seattle and Washington to take your pick of with this airline.

Map To Nearby Hotels

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.

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