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Amazing SEA to IAD Flight Deals

The cheapest flights to Washington Dulles Intl. found within the past 7 days were $238. Prices and availability subject to change. Additional terms may apply.

SEA to IAD Frequently Asked Questions

  • Question : How to get cheap flights from SEA to CLT?
    Answer : Finding cheap flights in December depends on when you book. Generally the cheapest flights are on Tuesday - Thursday. Weekends, Friday- Sunday tend to be more expensive. If your dates are flexible heading out during the week can save you money. Here are some cheap flights from SEA to CLT we found in February 2019:
    • American Airlines has a flight on 04/16 Leaving 7:40 pm and returning on 04/20 at 4:17 am for only $366.00 per person
    • Alaska Airlines has a flight on 04/16 Leaving 10:55 pm and returning on 04/20 at 3:20 am for only $373.00 per person
    • United has a flight on 04/16 Leaving 8:00 pm and returning on 04/19 at 10:23 pm for only $386.00 per person
    • Delta has a flight on 04/17 Leaving 5:35 am and returning on 04/19 at 5:45 pm for only $407.00 per person
  • Question : What airlines fly from SEA to IAD?
    Answer : There are several airlines that fly from Seattle (SEA) to Washington D.C. (IAD) every month. The top airlines that fly SEA to IAD are:
    • Alaska Airlines - (AS) with 436 flights every month
    • Delta Air Lines - (DL) with 408 flights every month
    • United Airlines - (UA) with 272 flights every month
    • American Airlines - (AA) with 252 flights every month
    • Southwest Airlines - (WN) with 112 flights every month
  • Question : How long is the flight from SEA-IAD?
    Answer : The flight from SEA to IAD is 4 hours 39 minutes non-stop, during that time you will fly about 2,313 miles.

  • Question : How many flights are flown between SEA and IAD?
    Answer : There are 7 airline companies that fly from SEA to IAD, with approximately 1552 flights per month. That averages about 388 flights per week.

  • Question : How many miles from Seattle to Washington D.C.?
    Answer : The distance between SEA and IAD airports is about 2,313 miles.

  • Question : What is the earliest and latest flight of the day from SEA to IAD?
    Answer : The earliest flight leaves SEA at 08:00 am and arrives at IAD at 6:31 am. The last flight of the day departs SEA at 11:10 pm and arrives at IAD at 9:20 pm.

Flight Schedule for SEA to IAD

Carrier Flight Depart SEA Arrive IAD Thu
5/23
Fri
5/24
Sat
5/25
Sun
5/26
Mon
5/27
Tue
5/28
Wed
5/29
Stops
AS 956 08:10 am 04:20 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 419 08:15 am 04:21 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 260 01:00 pm 08:54 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
DL 2680 10:40 pm 06:42 am Check fare Check fare - - Check fare Check fare Check fare 0 stop(s)
UA 205 10:45 pm 06:36 am Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
DL 643 10:40 pm 06:42 am - - Check fare - - - - 0 stop(s)

Seattle - Tacoma Intl. to Washington Dulles Intl. Flight FAQ

Origin Airport IATA Code SEA
Destination Airport IATA Code IAD
Number Of Flight Options 1
Flight Price $238
Average Flight Time 8 hours 0 minutes

Save on your next flight from SEA to IAD when you book through Travelocity. Need a last-minute flight to Washington? Travelocity offers discount airfare no matter when you book, even on popular routes such as Seattle - Tacoma Intl. Airport to Washington Dulles Intl. Airport. Whether you need a direct or indirect flight, you can trust Travelocity to provide you with the best prices for SEA to IAD flights.






Seattle to Washington Carriers and Route Information

Flight path for flights from Seattle-Tacoma International Airport to Washington Dulles International Airport.


Distance:
2,313.00 miles

Airline carriers and aircraft used on flights from SEA to IAD


Airline Carrier
Aircraft
Delta Air Lines
Boeing 777-300ER
United Airlines
Airbus A320-100/200


Hotels near Washington Dulles Intl. Airport (IAD)

Hyatt Regency Dulles $80
Reviewed on Feb 22, 2019
See details
 
Hyatt Regency Dulles

Hyatt Regency Dulles

2300 Dulles Corner Blvd, Herndon, VA
     
    4.5 of 5
    4.0 out of 5.0

    Great place, but the restaurant has a limited menu.

    Washington Dulles Airport Marriott $129
    Reviewed on Jul 6, 2018
    See details
     
    Washington Dulles Airport Marriott

    Washington Dulles Airport Marriott

    45020 Aviation Dr, Sterling, VA
       
      4.4 of 5
      3.5 out of 5.0

      We were stranded over night and the hotel shuttle came to get us . Room was great and room service was awesome, the Marriott saved us!!!

      Hyatt Place Herndon Dulles Airport East $99
      Reviewed on May 12, 2019
      See details
       
      Hyatt Place Herndon Dulles Airport East

      Hyatt Place Herndon Dulles Airport East

      13711 Sayward Blvd, Herndon, VA
         
        4.4 of 5
        3.0 out of 5.0

        It was clean and staff was pleasant, accommodations were excey

        The Westin Washington Dulles Airport $129
        Reviewed on Sep 26, 2018
        See details
         
        The Westin Washington Dulles Airport

        The Westin Washington Dulles Airport

        2520 Wasser Terrace, Herndon, VA
           
          4.1 of 5
          4.0 out of 5.0

          The hotel staff espesically valerie and the hotel driver johhie was wonderful and helpful . I love the hotel and helpful wonderful staff. The staff in the Hotel restaurant were wonderful mihrit and the young man the wears really fabulous glasses so sorry I couldn’t remember his name but he was awesome ...

          Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Travelocity users over the 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 Travelocity. 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.