$69 Find Cheap Flights from Washington, D.C. to Portsmouth

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Portsmouth departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$117
Typical prices: $316-$152
Delta
Tue 6/23Tue 6/30
BWI - BOS • Non-stop
Cheapest non-stop
$117
Typical prices: $316-$154
Delta
Tue 6/23Tue 6/23
BWI - BOS • Non-stop
Arrival airport
You can't fly directly to Portsmouth. It is served by Boston (BOS), located 50.3 miles from Portsmouth.
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Washington, D.C. to Portsmouth (WAS-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Portsmouth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Portsmouth

Tue, Jun 23 - Tue, Jun 30
Delta Logo
6:17 am - 8:00 am
BWI
-
BOS
1h 43mnonstop
Delta Logo
3:50 pm - 5:41 pm
BOS
-
BWI
1h 51mnonstop
$117Delta
Wed, Jun 17 - Tue, Jul 7
Delta Logo
6:17 am - 8:00 am
BWI
-
BOS
1h 43mnonstop
Delta Logo
11:10 am - 12:53 pm
BOS
-
BWI
1h 43mnonstop
$137Delta
Wed, Jul 1 - Tue, Jul 7
Delta Logo
6:17 am - 8:00 am
BWI
-
BOS
1h 43mnonstop
Delta Logo
6:35 am - 8:20 am
BOS
-
BWI
1h 45mnonstop
$147Delta
Tue, Jun 9 - Tue, Jun 9
American Airlines Logo
5:02 am - 9:21 am
BWI
-
BOS
4h 19m
1 stop
American Airlines Logo
6:58 pm - 12:07 am
BOS
-
BWI
5h 09m
1 stop
$159American Airlines
Tue, Jun 2 - Tue, Jun 9
American Airlines Logo
1:55 pm - 8:08 pm
BWI
-
BOS
6h 13m
1 stop
American Airlines Logo
4:47 pm - 12:07 am
BOS
-
BWI
7h 20m
1 stop
$162American Airlines
Wed, Jun 10 - Wed, Jun 17
United Airlines Logo
10:10 pm - 11:59 pm
IAD
-
BOS
1h 49mnonstop
United Airlines Logo
5:45 am - 7:23 am
BOS
-
IAD
1h 38mnonstop
$170United Airlines
Wed, Jul 29 - Wed, Aug 5
United Airlines Logo
8:35 am - 10:20 am
IAD
-
BOS
1h 45mnonstop
United Airlines Logo
5:45 am - 7:23 am
BOS
-
IAD
1h 38mnonstop
$171United Airlines
Wed, Jun 10 - Sun, Jun 14
JetBlue Logo
1:10 pm - 2:43 pm
DCA
-
BOS
1h 33mnonstop
JetBlue Logo
6:15 am - 7:57 am
BOS
-
DCA
1h 42mnonstop
$172JetBlue
Tue, May 26 - Thu, May 28
JetBlue Logo
2:55 pm - 4:41 pm
DCA
-
BOS
1h 46mnonstop
JetBlue Logo
6:15 am - 7:55 am
BOS
-
DCA
1h 40mnonstop
$175JetBlue
Mon, Jun 15 - Wed, Jun 17
Southwest Logo
10:30 pm - 12:05 am
BWI
-
BOS
1h 35mnonstop
Southwest Logo
5:25 am - 7:00 am
BOS
-
BWI
1h 35mnonstop
$176Southwest
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$69
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Baltimore to Boston

When to book flights from Washington, D.C. to Portsmouth

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Portsmouth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Washington, D.C. to Portsmouth

  • Which airports will I be using when flying from Washington, D.C. to Portsmouth?

    When flying out of Washington, D.C. you’ll be using one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. Portsmouth does not have its own airport so you’ll be flying into nearby Boston Logan Intl airport, which is 50.3 mi away.

  • How long does a flight from Washington, D.C. to Portsmouth take?

    Direct flights cover the 396 miles separating Washington, D.C. and Portsmouth in about 1h 30m.

  • How many flights are there between Washington, D.C. and Portsmouth?

    101 direct flights run between Washington, D.C. and Portsmouth on a daily basis. On average, there are about 707 departures each week.

  • What’s the cheapest day of the week to fly between Washington, D.C. and Portsmouth?

    Consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Portsmouth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Portsmouth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Portsmouth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portsmouth from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Portsmouth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portsmouth with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Portsmouth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portsmouth from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Washington, D.C. to Portsmouth?

    In the last 72 hours, the cheapest one-way ticket between Washington, D.C. and Portsmouth found on KAYAK was with JetBlue for $76. Frontier offered a round-trip connection from $86 and Delta from $102.

Top tips for finding cheap flights from Washington, D.C. to Portsmouth

  • There is no airport in Portsmouth. Instead, you’ll be flying into Boston Logan Airport when flying between Washington, D.C. and Portsmouth.
  • The cheapest flight from Washington, D.C. to Portsmouth was found 77 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be February, March and April. The cheapest month to fly is December.

Reviews of the top 5 airlines serving Washington, D.C. to Portsmouth

 
Need help choosing which airline to fly with from Washington, D.C. to Portsmouth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8457 reviews
7.8Entertainment
8.1Boarding
7.2Food
8.5Crew
7.9Comfort
Airline reviews

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

10.0 ExcellentIrmara, May 2026
MCO - BOS
Read more Delta reviews

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

The space between seat rows seemed to be larger than other airlines. I didn’t check their food or entertainment since I slept most of the way. They do seem to have a lot of options for purchase though.

Kayak sucked. You gave me a confirmation number that was not useable by the jet blue system. Nor did you send any check in emails. I’ll not be using your site again. Nice work.

Given us a free miles or free flight for waiting for 9 hours I didn’t get home till 5am in the morning and I was supposed to be home at 9:30 touch down.

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

Jet blue was great But the Jayak system Wasa pure nightmare and wasted so much of my time and energy by not giving me a way to access jet blue to check in the flight back I didn’t even get the number confirmation code 24 hours before. Because I didn’t receive the email with the confirmation code I could NoT CHECk IN. I spoke to a kayak third party and they informed me I could not carry a carry on, on the flight which caused me so much extra stress it was just too much. You can be sure I will not be using it recommending your site. Again.

There was a screen but no earphones that could use the older input so I could listen to anything.

My experience with JetBlue was fine BUT I am very upset with Kayak! JetBlue had delayed our scheduled departure by an hour and you NEVER notified me of the change. I did not hear directly from JetBlue because the trip was booked through Kayak, a mistake I will not repeat. Your reminder of the our trip last week still had the WRONG departure time. Our return trip has also changed, and again no notice from you.

Jet blue just had great service overall! Only a little turbulence heading out of Austin, otherwise the jet stream helped the speed of the trip!

Boarding was quick and efficient. The flight crew were friendly. There were limited food options available on the flight. The pocket guide said there would be salad and sandwich sections available on flights over 3.5 hours. The only food available were snack boxes. And those were limited as well. My flight was over 5 hours. The entertainment system worked well. I had both extra legroom seats and regular coach seats. The seats were not very comfortable. The entertainment controls in the armrest made it difficult to rest my arm without changing the channel on my neighbors TV. Overall, my experience was mediocre.

Purchased through 3rd party vendor which made everything difficult. Unable to check in online. Unable to get flight updates easily, tsa precheck information didn’t carry through, longer time to check in in person. Entertainment looked good but had to purchase conventional headphones to view.

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Delays with no explanation. It could have been handled better.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

There was no flight. Spirit went bankrupt Right before my departure and kayak did not refund me any money. I would like my refund kayak. How can I get it? Please let me know. Thank you

Flights were canceled due to airline shutting down and haven’t received a reimbursement. Had to book last minute new flights which were expensive

My flight was canceled the morning of the flight. I had to rebook a flight with a different airline that cost me $900 out of my pocket

Had a flight change had to get a credit.will I get my money back.

Shut down without prior notice End up with spending lots of extra $$$

There was a crack in my window seal. And Spirit is now closed forever.

The company went out of business and now I'm stuck in Ft. Lauderdale. Would not recommend.

Spirit changed flight times by 12 hours with coming and going so I refunded tickets and drove

The airline cancel mi flight, lost a lot of money!!!

They closed the doors earlier than posted. I missed my flight with a slim 5 minutes bc they closed the doors earlier than earlier. My luggage never made it onto the flight and I had to find a new flight to Dallas bc the only option they could rebook me on was for leaving miami.

Everything you need to know for your flight from Washington, D.C. to Portsmouth

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