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 $90 One Way, $159 Round Trip

Prices starting at $159 for return flights and $90 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.

Sat, Apr 25 - Wed, Apr 29
SEA
Seattle
IAD
Washington
$159 Roundtrip, found 2 days ago
$159
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Seattle to Washington, returning Wed, Apr 29, priced at $159 found 2 days ago
Tue, Apr 28 - Tue, May 5
SEA
Seattle
IAD
Washington
$160 Roundtrip, found 6 days ago
$160
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Seattle to Washington, returning Tue, May 5, priced at $160 found 6 days ago
Thu, Apr 30 - Mon, May 4
SEA
Seattle
IAD
Washington
$163 Roundtrip, found 1 hour ago
$163
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Apr 30 from Seattle to Washington, returning Mon, May 4, priced at $163 found 1 hour ago
Thu, Apr 23 - Tue, Apr 28
SEA
Seattle
IAD
Washington
$163 Roundtrip, found 4 days ago
$163
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Apr 23 from Seattle to Washington, returning Tue, Apr 28, priced at $163 found 4 days ago
Fri, Apr 17 - Tue, Apr 21
SEA
Seattle
IAD
Washington
$164 Roundtrip, found 3 hours ago
$164
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Fri, Apr 17 from Seattle to Washington, returning Tue, Apr 21, priced at $164 found 3 hours ago

Hotel Ideas near Washington Dulles Intl.

Airport Hotels near Washington Dulles Intl.

Hyatt Regency Dulles International Airport

Hyatt Regency Dulles International Airport

4 out of 5
2300 Dulles Corner Blvd Herndon VA
$106 nightly
The price is $122 total per night from Apr 3 to Apr 4
$122 total
Apr 3 - Apr 4
Total with taxes and fees
Book a stay at this golf hotel in Hunter Mill. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the ...
8.8/10 Excellent! (1,630 reviews)
Room and service was great . Only problem was elevators out of service .

Reviewed on Mar 3, 2026

Hyatt Regency Dulles International Airport
Hyatt Place Herndon Dulles Airport East

Hyatt Place Herndon Dulles Airport East

3 out of 5
13711 Sayward Blvd Herndon VA
$103 nightly
The price is $118 total per night from Mar 5 to Mar 6
$118 total
Mar 5 - Mar 6
Total with taxes and fees
Book a stay at this business-friendly hotel in Hunter Mill. Enjoy free breakfast, free WiFi, and a free airport shuttle. Our guests praise the breakfast and ...
8.4/10 Very Good! (2,757 reviews)
Door locks are flimsy.

Reviewed on Mar 3, 2026

Hyatt Place Herndon Dulles Airport East
Washington Dulles Airport Marriott

Washington Dulles Airport Marriott

4 out of 5
45020 Aviation Dr Sterling VA
$118 nightly
The price is $135 total per night from Mar 20 to Mar 21
$135 total
Mar 20 - Mar 21
Total with taxes and fees
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 ...
8.4/10 Very Good! (1,003 reviews)
Staff was very unprofessional. Wasn’t my favorite. Also the lobby is just packed with people laying on the floor, walking around barefoot… very odd experience

Reviewed on Mar 1, 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
$98 nightly
The price is $113 total per night from Mar 15 to Mar 16
$113 total
Mar 15 - Mar 16
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 ...
8.2/10 Very Good! (1,432 reviews)
We didn’t use the gym or eat breakfast here. Hotel was easy check in and room was good

Reviewed on Mar 3, 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
$99 nightly
The price is $114 total per night from Mar 12 to Mar 13
$114 total
Mar 12 - Mar 13
Total with taxes and fees
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! (1,001 reviews)
Our room was very clean and comfortable. I really appreciated that they allowed us to check out at 12 instead of 11 because my daughter woke up with a fever and I wanted her to rest longer. Also, Orbitz listed the check-out time as 12, but it is actually at 11.

Reviewed on Feb 28, 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
$127 nightly
The price is $145 total per night from Mar 6 to Mar 7
$145 total
Mar 6 - Mar 7
Total with taxes and fees
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! (3,014 reviews)
Outside of the fire alarm going off. It was a good stay. Would stay here again. Staff was accommodating

Reviewed on Mar 2, 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
$98 nightly
The price is $113 total per night from Mar 15 to Mar 16
$113 total
Mar 15 - Mar 16
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 ...
8.2/10 Very Good! (1,432 reviews)
We didn’t use the gym or eat breakfast here. Hotel was easy check in and room was good

Reviewed on Mar 3, 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
$84 nightly
The price is $97 total per night from Mar 15 to Mar 16
$97 total
Mar 15 - Mar 16
Total with taxes and fees
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! (1,002 reviews)
Nice location near many food options. Staff was nice and check in was easy. Good breakfast options. Didn’t get to use shuttle since I arrived too late and left too early. A few things to improve. No toilet paper in the room when I checked in or toilet paper holder. Outlets that power coffee maker, ...

Reviewed on Mar 2, 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
$89 nightly
The price is $103 total per night from Mar 15 to Mar 16
$103 total
Mar 15 - Mar 16
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 ...
8.8/10 Excellent! (1,003 reviews)
It was good

Reviewed on Mar 2, 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
$96 nightly
The price is $110 total per night from Mar 15 to Mar 16
$110 total
Mar 15 - Mar 16
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)
Never again would i stay here.

Reviewed on Mar 2, 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
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 (474 reviews)
Pretty basic but it's alright

Reviewed on Feb 22, 2026

Get rates
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 Mar 15 to Mar 16
$113 total
Mar 15 - Mar 16
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 ...
8.2/10 Very Good! (1,432 reviews)
We didn’t use the gym or eat breakfast here. Hotel was easy check in and room was good

Reviewed on Mar 3, 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
$110 nightly
The price is $126 total per night from Mar 22 to Mar 23
$126 total
Mar 22 - Mar 23
Total with taxes and fees
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! (1,000 reviews)
The first rook that I went to had stains on the couch and furniture. I noticed mold in the second room towards the end of the stay. The fan in the room ran constantly whether you had the heat on or not. The room is severely dated and needs to be updated. The hotel tried to charge me an additional ...

Reviewed on Feb 11, 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
$89 nightly
The price is $103 total per night from Mar 15 to Mar 16
$103 total
Mar 15 - Mar 16
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 ...
8.8/10 Excellent! (1,003 reviews)
It was good

Reviewed on Mar 2, 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
$84 nightly
The price is $97 total per night from Mar 15 to Mar 16
$97 total
Mar 15 - Mar 16
Total with taxes and fees
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! (1,002 reviews)
Nice location near many food options. Staff was nice and check in was easy. Good breakfast options. Didn’t get to use shuttle since I arrived too late and left too early. A few things to improve. No toilet paper in the room when I checked in or toilet paper holder. Outlets that power coffee maker, ...

Reviewed on Mar 2, 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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