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Portsmouth International Airport to Dulles International Airport flight
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Portsmouth International Airport to Dulles International Airport Flights Info

Cheapest one-way
CAD 324
Allegiant Air Allegiant Air 25h 43m · 1 stop Sun, Dec 6
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Recommended airlines
Allegiant Air Allegiant AirCheapest· From CAD 324 Delta Air Lines Delta Air LinesMost booked

Find the cheapest Boston to Washington D.C. flights over the next 3 months. One-way fares from CAD 324, return fares from CAD 324.

    • Cheapest
      PSM 18:57
      25h 43m
      1 stop
      IAD 20:40
      Boston - Washington D.C. | Sun, Dec 6 | Allegiant Air
      CAD 324 CAD 436
      26% off
      26% off
      CAD 436 CAD 324
    • PSM 18:47
      15h 34m
      1 stop
      IAD 10:21
      Boston - Washington D.C. | Tue, Nov 24 | Breeze Airways
      CAD 325 CAD 436
      25% off
      25% off
      CAD 436 CAD 325
    • PSM 20:37
      13h 44m
      1 stop
      IAD 10:21
      Boston - Washington D.C. | Thu, Nov 26 | Breeze Airways
      CAD 367 CAD 436
      16% off
      16% off
      CAD 436 CAD 367
    • PSM 17:31
      27h 9m
      1 stop
      IAD 20:40
      Boston - Washington D.C. | Sun, Dec 6 | Breeze Airways
      CAD 379
      13% off
      CAD 436 CAD 379
    • BOS 13:00
      17h 25m
      1 stop
      WAS 14:00
      Boston - Washington D.C. | Mon, Nov 16 | Normal Airline
      Find more flights
      Find more flights
    • PSM 20:37
      13h 44m
      1 stop
      IAD 10:21
      Boston - Washington D.C. | Thu, Nov 26 | Breeze Airways
      CAD 367 CAD 436
      16% off
      16% off
      CAD 436 CAD 367
    • PSM 18:47
      15h 34m
      1 stop
      IAD 10:21
      Boston - Washington D.C. | Tue, Nov 24 | Breeze Airways
      CAD 325 CAD 436
      25% off
      25% off
      CAD 436 CAD 325
    • PSM 18:57
      25h 43m
      1 stop
      IAD 20:40
      Boston - Washington D.C. | Sun, Dec 6 | Allegiant Air
      CAD 324 CAD 436
      26% off
      26% off
      CAD 436 CAD 324
    • PSM 17:31
      27h 9m
      1 stop
      IAD 20:40
      Boston - Washington D.C. | Sun, Dec 6 | Breeze Airways
      CAD 379
      13% off
      CAD 436 CAD 379
    • BOS 13:00
      17h 25m
      1 stop
      WAS 14:00
      Boston - Washington D.C. | Mon, Nov 16 | Normal Airline
      Find more flights
      Find more flights

Displayed flight fares from Boston to Washington D.C. are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Portsmouth International Airport to Dulles International Airport?

The cheapest airline flying from Portsmouth International Airport to Dulles International Airport is Allegiant Air (from CAD 324) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.
WestJet logo WestJet Porter Airlines logo Porter Airlines Air Canada logo Air Canada Flair Airlines logo Flair Airlines Air North logo Air North
Delta Air Lines logo Delta Air Lines

What is the flight schedule from Portsmouth International Airport to Dulles International Airport?

Check the schedule for flights from Boston to Washington D.C. and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. MX119

    Portsmouth International Airport

    18:49

    PSM

    2h 20m

    Direct

    21:09

    RDU

    - - - W - - S
    Search

  2. MX119

    Raleigh-Durham International Airport

    21:49

    RDU

    1h 59m

    Direct

    23:48

    MCO

    - - - W - - S

  3. F94230

    Orlando International Airport

    08:00

    MCO

    2h 21m

    Direct

    10:21

    IAD

    S M T W - F S
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FAQs for Portsmouth International Airport to Dulles International Airport Flights

  • What is the average price of a flight from Portsmouth International Airport to Dulles International Airport?

    Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Portsmouth International Airport to Dulles International Airport is CAD 287. Prices may vary depending on the departure date, airline, and availability.
  • Enter Portsmouth International Airport and Dulles International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed on this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within the last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

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Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.