Cheap Flights from Portsmouth (PSM) to Washington (IAD)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Washington Dulles International Airport (IAD)

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Flight from Portsmouth to Washington route information
Origin airport
Portsmouth Intl.
Destination airport
Washington Dulles Intl.
Distance
716 km

Compare flights from Portsmouth to Washington easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Portsmouth to Washington. Operating between them flights per day, airlines cover the route. And fly direct, getting you to Washington Dulles Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Portsmouth Intl. to Washington Dulles Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Portsmouth Intl. (PSM) to Washington Dulles Intl. (IAD)

The easiest way to view the best deals on flights from Portsmouth to Washington today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Portsmouth Intl. to Washington Dulles Intl. start at just and range up to .  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Portsmouth and Washington
  • booking your flight during , the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Portsmouth to Washington flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Portsmouth Intl. to Washington Dulles Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from PSM to IAD?
The lowest price advertised for a round-trip flight between Portsmouth Intl. Airport at Pease and Washington Dulles Intl. Airport (IAD) is . But you better get a move on. This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Portsmouth Intl. Airport (PSM) to Washington Dulles Intl. Airport (IAD)?
We understand that things come up unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from PSM to IAD that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Portsmouth Intl. Airport at Pease to Washington Dulles Intl. Airport (IAD) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from PSM to IAD?
The distance from PSM (PSM) to Washington Dulles Intl. Airport (IAD) (IAD) is 720 kilometres. You'll be disembarking the plane and grabbing your bags from the carousel in no time at all.
Which airlines fly direct from PSM to Washington Dulles Intl. Airport (IAD)?
Flying nonstop between Portsmouth Intl. Airport at Pease and Washington Dulles Intl. Airport (IAD) isn't possible at present. However, you'll still be able to book a flight to Chantilly with at least one stop.
Are Portsmouth Intl. Airport at Pease to IAD flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Portsmouth Intl. Airport at Pease to Washington Dulles Intl. Airport (IAD) last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

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