$63 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 2/17. 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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Everything you should know

Cheapest round-trip
$117
Overall average: $164
Delta
Tue 3/24Sat 3/28
PHL - BOS • Non-stop
Cheapest one-way
$63
Typical prices: $78-$213
Spirit Airlines
Tue 2/17
PHL - BOS • 1 stop
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Flight Deals
Useful Info
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

Tue, Mar 24 - Sat, Mar 28
Delta Logo
11:16 am - 12:36 pm
PHL
-
BOS
1h 20mnonstop
Delta Logo
7:25 pm - 9:02 pm
BOS
-
PHL
1h 37mnonstop
$117Delta
Sat, Mar 14 - Mon, Mar 16
American Airlines Logo
7:00 pm - 8:27 pm
PHL
-
BOS
1h 27mnonstop
American Airlines Logo
5:40 am - 7:21 am
BOS
-
PHL
1h 41mnonstop
$118American Airlines
Fri, Feb 13 - Tue, Feb 17
JetBlue Logo
6:00 am - 7:17 am
PHL
-
BOS
1h 17mnonstop
JetBlue Logo
12:29 pm - 2:05 pm
BOS
-
PHL
1h 36mnonstop
$122JetBlue
Wed, Feb 25 - Sat, Feb 28
Multiple Airlines Logo
6:40 pm - 1:13 am
PHL
-
BOS
6h 33m
1 stop
Multiple Airlines Logo
12:29 pm - 2:07 pm
BOS
-
PHL
1h 38mnonstop
$123Multiple Airlines
Fri, Mar 13 - Tue, Mar 17
Multiple Airlines Logo
6:00 am - 7:17 am
PHL
-
BOS
1h 17mnonstop
Multiple Airlines Logo
5:40 am - 7:40 pm
BOS
-
PHL
14h 00m
1 stop
$127Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Frontier Logo
6:40 pm - 1:13 am
PHL
-
BOS
6h 33m
1 stop
Frontier Logo
6:00 am - 5:12 pm
BOS
-
PHL
11h 12m
1 stop
$128Frontier
Tue, Feb 17 - Thu, Feb 19
Multiple Airlines Logo
8:06 am - 5:15 pm
PHL
-
BOS
9h 09m
1 stop
Multiple Airlines Logo
5:50 pm - 2:38 pm
BOS
-
PHL
20h 48m
1 stop
$129Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Frontier Logo
6:40 pm - 1:13 am
PHL
-
BOS
6h 33m
1 stop
Frontier Logo
6:00 am - 5:12 pm
BOS
-
PHL
11h 12m
1 stop
$130Frontier
Sat, Feb 28 - Tue, Mar 3
JetBlue Logo
6:00 am - 7:17 am
PHL
-
BOS
1h 17mnonstop
JetBlue Logo
8:59 pm - 10:36 pm
BOS
-
PHL
1h 37mnonstop
$132JetBlue
Tue, Feb 17 - Thu, Feb 19
Multiple Airlines Logo
6:00 am - 7:17 am
PHL
-
BOS
1h 17mnonstop
Multiple Airlines Logo
10:01 am - 5:01 pm
BOS
-
PHL
7h 00m
1 stop
$133Multiple Airlines
Useful Info

Good to know

Low seasonDecember
Cheapest flight$63
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 20% 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?

    64 direct flights run between Philadelphia and Portsmouth on a daily basis. On average, there are about 453 departures each week.

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

    Consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

  • 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 $28. Frontier offered a round-trip connection from $37 and JetBlue from $79.

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 72 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 May, June and July. The cheapest month to fly is February.

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 8128 reviews
7.2Food
8.1Boarding
7.9Comfort
8.5Crew
7.8Entertainment
Airline reviews

Timing, quality of service, promptness and courtesy of the staff

10.0 ExcellentAjai, Jan 2026
DFW - ATL
Read more Delta reviews

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

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.

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready

It was good. I prefer JB over other airlines.I just wish we had headphones for the films, but other than that - good.

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

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.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

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

Complete your trip to Portsmouth with a hotel stay or car rental