$54 Find Cheap Flights from Philadelphia 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 Philadelphia to Portsmouth departing on 11/17. 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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Flight Deals

Cheap Flights from Philadelphia to Portsmouth (PHL-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia 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 Philadelphia to Portsmouth

Mon, Nov 17 - Mon, Nov 24
Frontier Logo
6:00 am - 11:35 amPHL-BOS
5h 35m1 stop
Frontier Logo
8:24 am - 10:04 amBOS-PHL
1h 40mnonstop
$93Frontier
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Mon, Nov 17 - Sun, Nov 23
Frontier Logo
6:00 am - 11:35 amPHL-BOS
5h 35m1 stop
Frontier Logo
8:24 am - 10:04 amBOS-PHL
1h 40mnonstop
$95Frontier
Find Deal
Tue, Nov 25 - Mon, Dec 1
Frontier Logo
6:00 am - 7:29 amPHL-BOS
1h 29mnonstop
Frontier Logo
8:24 am - 10:04 amBOS-PHL
1h 40mnonstop
$97Frontier
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Fri, Dec 5 - Mon, Dec 8
JetBlue Logo
6:00 am - 7:24 amPHL-BOS
1h 24mnonstop
JetBlue Logo
8:00 am - 9:39 amBOS-PHL
1h 39mnonstop
$117JetBlue
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Tue, Nov 18 - Thu, Nov 20
Multiple Airlines Logo
3:10 pm - 11:59 pmPHL-BOS
8h 49m1 stop
Multiple Airlines Logo
11:09 am - 11:47 amBOS-PHL
24h 38m1 stop
$120Multiple Airlines
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Fri, Dec 5 - Sun, Dec 7
Delta Logo
6:00 am - 7:41 amPHL-BOS
1h 41mnonstop
Delta Logo
9:20 am - 11:04 amBOS-PHL
1h 44mnonstop
$127Delta
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Fri, Nov 21 - Sun, Nov 23
JetBlue Logo
6:00 am - 7:24 amPHL-BOS
1h 24mnonstop
JetBlue Logo
6:00 am - 7:35 amBOS-PHL
1h 35mnonstop
$132JetBlue
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Thu, Nov 13 - Fri, Nov 14
Multiple Airlines Logo
7:15 am - 8:44 amPHL-BOS
1h 29mnonstop
Multiple Airlines Logo
12:59 pm - 10:47 pmBOS-PHL
9h 48m1 stop
$133Multiple Airlines
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Wed, Nov 12 - Tue, Nov 18
Delta Logo
1:25 pm - 2:53 pmPHL-BOS
1h 28mnonstop
Delta Logo
7:50 pm - 9:36 pmBOS-PHL
1h 46mnonstop
$137Delta
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Mon, Nov 17 - Mon, Nov 24
American Airlines Logo
9:30 pm - 10:54 pmPHL-BOS
1h 24mnonstop
American Airlines Logo
7:00 am - 8:42 amBOS-PHL
1h 42mnonstop
$149American Airlines
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Everything you should know

Cheapest round-trip
$93
Overall average: $167
Frontier
Mon 11/17Mon 11/24
PHL - BOS • 1 stop
Cheapest non-stop
$97
Typical prices: $83-$234
Frontier
Tue 11/25Mon 12/1
PHL - BOS • Non-stop
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We hope you love your trip to Portsmouth!
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$54
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Philadelphia to Boston

When to book flights from Philadelphia to Portsmouth

Are your dates flexible? Find out the best times to travel from Philadelphia 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 Philadelphia to Portsmouth

  • Which airports will I be using when flying from Philadelphia to Portsmouth?

    When flying out of Philadelphia you’ll be using Philadelphia. 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 Philadelphia to Portsmouth take?

    Direct flights cover the 279 miles separating Philadelphia and Portsmouth in about 1h 17m.

  • How many flights are there between Philadelphia and Portsmouth?

    79 direct flights run between Philadelphia and Portsmouth on a daily basis. On average, there are about 553 departures each week.

  • What’s the cheapest day of the week to fly between Philadelphia and Portsmouth?

    Consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Thursdays and the most expensive ones on Mondays.

  • How does KAYAK find such low prices on flights from Philadelphia 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 Philadelphia to Portsmouth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Portsmouth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portsmouth from Philadelphia 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 Philadelphia 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 Philadelphia with another airline.

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

    In the last 72 hours, the cheapest one-way ticket between Philadelphia and Portsmouth found on KAYAK was with Frontier for $54. Frontier offered a round-trip connection from $93 and JetBlue from $117.

Top tips for finding cheap flights from Philadelphia to Portsmouth

  • There is no airport in Portsmouth. Instead, you’ll be flying into Boston Logan Airport when flying between Philadelphia and Portsmouth.
  • The cheapest flight from Philadelphia to Portsmouth was found 66 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is December.

Reviews of the top 4 airlines serving Philadelphia to Portsmouth

 
Need help choosing which airline to fly with from Philadelphia 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 7993 reviews
7.3Food
8.5Crew
7.9Comfort
8.2Boarding
7.9Entertainment
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

They have the most inexperienced / rude flight staff I’ve encountered

very difficult boarding process - aggressive passengers not the friendliest crew

WiFi was not eorkig (again) And the plane was from 1990 with the screens which were.not touch and most didn’t even work and if lucky could tune in tv

I paid extra for a seat closer to the front. The TV didn’t work at all for the entire flight. Would have been nice to know before I purchased an “upgraded “ seat

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Everything you need to know for your flight from Philadelphia to Portsmouth

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