$325 Find Cheap Flights 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 to Portsmouth departing on 5/6. 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
$593
Multiple Airlines
Thu 3/19Thu 3/26
BOS - SOU • 2 stops
Cheapest one-way
$325
Delta
Wed 5/6
SFO - SOU • 1 stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights to Portsmouth

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

Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
1:00 pm - 7:40 pm
BOS
-
SOU
26h 40m
2 stops
Multiple Airlines Logo
9:30 am - 9:20 pm
SOU
-
BOS
15h 50m
2 stops
$593Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
10:15 am - 7:40 pm
BOS
-
SOU
29h 25m
3 stops
Multiple Airlines Logo
9:30 am - 9:20 pm
SOU
-
BOS
15h 50m
2 stops
$597Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Aer Lingus Logo
10:20 pm - 7:40 pm
BOS
-
SOU
17h 20m
1 stop
Aer Lingus Logo
9:30 am - 7:55 pm
SOU
-
BOS
14h 25m
1 stop
$639Aer Lingus
Wed, Mar 18 - Wed, Mar 25
KLM Logo
6:45 pm - 8:20 am
JFK
-
SOU
9h 35m
1 stop
KLM Logo
8:50 am - 12:25 pm
SOU
-
JFK
31h 35m
1 stop
$683KLM
Wed, Mar 18 - Wed, Mar 25
Delta Logo
12:27 pm - 8:20 am
JFK
-
SOU
15h 53m
2 stops
Delta Logo
8:50 am - 8:20 pm
SOU
-
JFK
15h 30m
1 stop
$687Delta
Wed, May 6 - Tue, May 12
Delta Logo
4:40 pm - 8:35 am
JFK
-
SOU
10h 55m
1 stop
Delta Logo
9:05 am - 5:05 pm
SOU
-
JFK
13h 00m
1 stop
$696Delta
Fri, Mar 6 - Thu, Mar 19
KLM Logo
8:59 pm - 8:50 am
BOS
-
SOU
30h 51m
2 stops
KLM Logo
8:50 am - 10:54 pm
SOU
-
BOS
18h 04m
2 stops
$841KLM
Sat, May 23 - Thu, May 28
Aer Lingus Logo
5:35 pm - 4:35 pm
EWR
-
SOU
18h 00m
1 stop
Aer Lingus Logo
9:10 am - 4:05 pm
SOU
-
EWR
11h 55m
1 stop
$851Aer Lingus
Wed, Mar 18 - Wed, Mar 25
Virgin Atlantic Logo
5:15 pm - 8:20 am
ATL
-
SOU
35h 05m
2 stops
Virgin Atlantic Logo
8:50 am - 5:50 pm
SOU
-
ATL
13h 00m
1 stop
$852Virgin Atlantic
Wed, Mar 18 - Wed, Mar 25
Virgin Atlantic Logo
7:45 am - 8:20 am
ATL
-
SOU
20h 35m
2 stops
Virgin Atlantic Logo
8:50 am - 10:45 pm
SOU
-
ATL
17h 55m
2 stops
$878Virgin Atlantic
Useful Info

Good to know - Book Cheap Portsmouth Plane Tickets

Low seasonApril
Cheapest flight$325
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from San Francisco to Southampton

FAQs - booking Portsmouth flights

  • How to fly to Portsmouth?

    You cannot fly directly to Portsmouth. KAYAK recommends you fly to Southampton Eastleigh (SOU) (14.67 miles from Portsmouth). From there you can rent a car or get a taxi.

  • What airports are near Portsmouth?

    The closest airport is Southampton Eastleigh (SOU) (14.67 mi). Other nearby airports are Bournemouth (BOH) (32.95 mi), London Gatwick (LGW) (45.91 mi), London Heathrow (LHR) (52.65 mi) or London All airports (LON) (63.13 mi). KAYAK recommends you fly to Southampton Eastleigh.

  • How far is Southampton Eastleigh Airport from central Southampton?

    You’ll need to travel 3 miles to reach the Southampton city center from Southampton Eastleigh Airport.

  • What is the name of Southampton’s airport?

    There is only 1 airport in Southampton, called Southampton Eastleigh Airport (SOU). It can also be referred to as Eastleigh or Southampton.

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

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Portsmouth

  • There is no major airport in Portsmouth. It is instead served by Southampton Eastleigh Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Portsmouth flight deals.

Reviews of the top 3 airlines flying to Portsmouth

 
Need help choosing which airline to fly with from the United States 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 8139 reviews
7.9Comfort
7.2Food
8.1Boarding
8.5Crew
7.8Entertainment
Airline reviews

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

2.0 MediocreAlparda, Feb 2026
BOS - ICN
Read more Delta reviews

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

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 flight was comfortable and uneventful, which is what I desire

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.

Empty seats next to me - wish it had been for a longer flight!!

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

One of the best flight experiences I've have had in along time. Would fly with them again.

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

Seats a little to soft on the SFO DUB flight

Well, I think we left close to on time. Crew was “eh”.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

Fast and sensible boarding was absolutely amazing. But extortionate wifi and seats that barely moved, making me unable to sleep, didn't do a lot of favors.

I liked the front row seats. A lot of leg room. The check-in window needs to be longer

Everything you need to know for your flight to Portsmouth