Trip.com
>
Cheap Flights
>
United States
>
Massachusetts
>
Boston
>
Washington D.C. to Boston flight
>
Dulles International Airport to Portsmouth International Airport flight

Explore the cheapest one-way and round-trip flights from Dulles International Airport to Portsmouth International Airport over the next 90 days, with one-way fares from TRY 15,321 and round-trip from TRY 20,120. Based on Trip.com's latest 7-day flight data.

    • Cheapest
      IAD 20:57
      20h 35m
      1 stop
      PSM 17:32
      Washington D.C. - Boston | Wed, Nov 4 | Allegiant Air
      TRY 15,321 TRY 21,280
      28% off
      28% off
      TRY 21,280 TRY 15,321
    • WAS 13:00
      17h 25m
      1 stop
      BOS 14:00
      Washington D.C. - Boston | Sun, Nov 1 | Normal Airline
      Find more flights
      Find more flights
    • IAD 17:50
      23h 42m
      1 stop
      PSM 17:32
      Washington D.C. - Boston | Fri, Nov 6 | Allegiant Air
      BOS 09:22
      1h 48m
      Direct
      DCA 11:10
      Boston - Washington D.C. | Mon, Nov 9 | Jetblue Airways
      TRY 20,120 TRY 28,737
      30% off
      30% off
      TRY 28,737 TRY 20,120
    • IAD 11:12
      8h 45m
      1 stop
      PSM 19:57
      Washington D.C. - Boston | Sun, Nov 1 | Frontier Airlines
      BOS 06:10
      1h 49m
      Direct
      DCA 07:59
      Boston - Washington D.C. | Tue, Nov 3 | Jetblue Airways
      TRY 20,690 TRY 28,737
      28% off
      28% off
      TRY 28,737 TRY 20,690
    • WAS 13:00
      17h 25m
      1 stop
      BOS 14:00
      Washington D.C. - Boston | Sun, Nov 1 | Normal Airline
      BOS 15:00
      6h
      Direct
      WAS 16:00
      Boston - Washington D.C. | Tue, Nov 3 | Normal Airline
      Find more flights
      Find more flights
    • IAD 20:57
      20h 35m
      1 stop
      PSM 17:32
      Washington D.C. - Boston | Wed, Nov 4 | Allegiant Air
      TRY 15,321 TRY 21,280
      28% off
      28% off
      TRY 21,280 TRY 15,321
    • WAS 13:00
      17h 25m
      1 stop
      BOS 14:00
      Washington D.C. - Boston | Sun, Nov 1 | Normal Airline
      Find more flights
      Find more flights

Displayed flight fares from Washington D.C. to Boston 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 Dulles International Airport to Portsmouth International Airport?

The cheapest airline flying from Dulles International Airport to Portsmouth International Airport is Allegiant Air (from TRY 13,581) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Allegiant Air
From TRY 13,581

Find more flights and airlines

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

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. G4879

    Dulles International Airport

    16:20

    IAD

    2h 28m

    Direct

    18:48

    PGD

    - - - - - - S
    Search

  2. G42497

    Punta Gorda Airport

    11:00

    PGD

    3h 3m

    Direct

    14:03

    PSM

    S - - - - - -
Find more flights and airlines

About Dulles International Airport and Portsmouth International Airport

Learn about Dulles International Airport (IAD) and Portsmouth International Airport (PSM) — including location, terminals, transportation, and travel tips.

Flight distance 724.13km
Cheapest one-way ticket price TRY 15,321
Cheapest return ticket price TRY 20,120

FAQs for Dulles International Airport to Portsmouth International Airport Flights

  • What are the cheapest flights from Dulles International Airport to Portsmouth International Airport?

    One-way flights from Dulles International Airport to Portsmouth International Airport currently start from TRY 15,321, and round-trip fares start from TRY 20,120. The current lowest fare is a Allegiant Air flight departing on Wed, Nov 4; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Dulles International Airport to Portsmouth International Airport is TRY 12,266. Prices may vary depending on the departure date, airline, and availability.
  • Enter Dulles International Airport and Portsmouth 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