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 - Tue, Apr 28
SEA
Seattle
IAD
Washington
$159 Roundtrip, found 1 day ago
$159
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Seattle to Washington, returning Tue, Apr 28, priced at $159 found 1 day ago
Tue, Apr 28 - Tue, May 5
SEA
Seattle
IAD
Washington
$160 Roundtrip, found 2 days ago
$160
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Seattle to Washington, returning Tue, May 5, priced at $160 found 2 days ago
Wed, Apr 22 - Tue, Apr 28
SEA
Seattle
IAD
Washington
$163 Roundtrip, found 2 hours ago
$163
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Apr 22 from Seattle to Washington, returning Tue, Apr 28, priced at $163 found 2 hours ago
Thu, Apr 23 - Tue, Apr 28
SEA
Seattle
IAD
Washington
$163 Roundtrip, found 2 hours ago
$163
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Apr 23 from Seattle to Washington, returning Tue, Apr 28, priced at $163 found 2 hours ago
Wed, Apr 22 - Tue, Apr 28
SEA
Seattle
IAD
Washington
$164 Roundtrip, found 2 hours ago
$164
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Apr 22 from Seattle to Washington, returning Tue, Apr 28, priced at $164 found 2 hours ago

Hotel Ideas near Washington Dulles Intl.

Airport Hotels near Washington Dulles Intl.

Hyatt Regency Dulles

Hyatt Regency Dulles

4 out of 5
2300 Dulles Corner Blvd Herndon VA
$110 nightly
The price is $126 total per night from Mar 20 to Mar 21
$126 total
Mar 20 - Mar 21
Total with taxes and fees
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! (1,623 reviews)
The room was clean and the bed was very comfortable. The room had a slight smell of strong cleaning products. The desk staff were professional and competent. Dinner in the hotel restaurant was quite good.

Reviewed on Feb 27, 2026

Hyatt Regency Dulles
Hyatt Place Herndon Dulles Airport East

Hyatt Place Herndon Dulles Airport East

3 out of 5
13711 Sayward Blvd Herndon VA
$105 nightly
The price is $121 total per night from Mar 6 to Mar 7
$121 total
Mar 6 - Mar 7
Total with taxes and fees
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 ...
8.4/10 Very Good! (2,746 reviews)
Staff are good. Shuttle is nice

Reviewed on Feb 27, 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! (1,001 reviews)
Arrived late at night with a baby in the cold and had an extremely frustrating experience with the hotel shuttle and check‑in. After being told the shuttle would arrive “soon,” I waited for over 30 minutes. I called multiple times, only to be given shifting excuses like “they’re getting gas” and ...

Reviewed on Feb 25, 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 8 to Mar 9
$113 total
Mar 8 - Mar 9
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! (1,428 reviews)
Clean quiet

Reviewed on Feb 27, 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
$87 nightly
The price is $100 total per night from Mar 9 to Mar 10
$100 total
Mar 9 - Mar 10
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! (1,000 reviews)
There is no water to drink available at this hotel. No water fountains or water bottles for sale. The bathroom was so small that it was uncomfortable for an adult to use. The shower felt claustrophobic as the shower curtain kept sticking to me because there wasn’t enough space to stand comfortably. ...

Reviewed on Feb 20, 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
$122 nightly
The price is $140 total per night from Mar 6 to Mar 7
$140 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! (3,008 reviews)
Staff was very courteous.

Reviewed on Feb 26, 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 8 to Mar 9
$113 total
Mar 8 - Mar 9
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! (1,428 reviews)
Clean quiet

Reviewed on Feb 27, 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 6 to Mar 7
$97 total
Mar 6 - Mar 7
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! (1,000 reviews)
Good

Reviewed on Feb 16, 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 8 to Mar 9
$103 total
Mar 8 - Mar 9
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! (1,001 reviews)
Room looks newly renovated. Staff courteous.

Reviewed on Feb 18, 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
$94 nightly
The price is $108 total per night from Mar 13 to Mar 14
$108 total
Mar 13 - Mar 14
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 ...
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 8 to Mar 9
$113 total
Mar 8 - Mar 9
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! (1,428 reviews)
Clean quiet

Reviewed on Feb 27, 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 8 to Mar 9
$103 total
Mar 8 - Mar 9
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! (1,001 reviews)
Room looks newly renovated. Staff courteous.

Reviewed on Feb 18, 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 6 to Mar 7
$97 total
Mar 6 - Mar 7
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! (1,000 reviews)
Good

Reviewed on Feb 16, 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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