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Portsmouth

$276+ Cheap flights to Portsmouth

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Flights to Portsmouth in 2026

Cheapest flights to Portsmouth
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on July 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:20 pm
JFK
-
SOU
2 stops58h 55m
Multiple Airlines
Mon 9/287:20 pm
SOU
-
JFK
1 stop31h 40m
Multiple Airlines
Deal found 7/23$716
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:30 pm
JFK
-
SOU
2 stops18h 00m
Multiple Airlines
Tue 9/155:20 pm
SOU
-
JFK
3 stops31h 00m
Multiple Airlines
Deal found 7/25$769
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:55 pm
JFK
-
SOU
1 stop11h 55m
Aer Lingus
Tue 9/158:00 pm
SOU
-
JFK
2 stops23h 55m
Aer Lingus
Deal found 7/25$776
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:55 pm
JFK
-
SOU
1 stop10h 45m
Multiple Airlines
Mon 9/148:40 pm
SOU
-
JFK
2 stops30h 50m
Multiple Airlines
Deal found 7/23$777
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:20 pm
JFK
-
SOU
2 stops33h 20m
Multiple Airlines
Mon 9/219:20 am
SOU
-
JFK
1 stop18h 05m
Multiple Airlines
Deal found 7/26$780
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:35 pm
EWR
-
SOU
1 stop10h 05m
Multiple Airlines
Thu 10/88:00 pm
SOU
-
EWR
2 stops30h 00m
Multiple Airlines
Deal found 7/27$785
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:30 pm
JFK
-
SOU
2 stops15h 20m
Multiple Airlines
Wed 9/168:55 am
SOU
-
JFK
2 stops15h 25m
Multiple Airlines
Deal found 7/25$792
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:00 pm
EWR
-
SOU
3 stops28h 35m
Multiple Airlines
Tue 9/156:10 pm
SOU
-
EWR
2 stops26h 20m
Multiple Airlines
Deal found 7/25$792
This Mytrip deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:35 pm
EWR
-
SOU
1 stop18h 15m
Multiple Airlines
Mon 10/197:20 pm
SOU
-
EWR
2 stops30h 40m
Multiple Airlines
Deal found 7/23$793
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:20 pm
JFK
-
SOU
2 stops36h 45m
Multiple Airlines
Thu 10/89:20 am
SOU
-
JFK
1 stop18h 05m
Multiple Airlines
Deal found 7/27$812
This Kissandfly.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:05 pm
JFK
-
SOU
1 stop17h 25m
Aer Lingus
Wed 9/168:55 am
SOU
-
JFK
1 stop18h 30m
Aer Lingus
Deal found 7/25$815
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:30 pm
LGA
-
SOU
2 stops23h 00m
Multiple Airlines
Wed 9/168:00 pm
SOU
-
LGA
2 stops23h 36m
Multiple Airlines
Deal found 7/25$817

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on July 27, 2026.

Popular in

June

Cheapest in

September

Average price

$825

Round-trip from

$540

One-way from

$276
Highest demand for flights based on searches. 22% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
From New York to London
Search Deals
One-way flight from New York to Portsmouth
Search Deals

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on July 27, 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Wed 9/9

3:30 pm-7:30 pm

2 stops23h 00m

Southampton Eastleigh

Wed 9/16

8:00 pm-2:36 pm

2 stops23h 36m

$817

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Thu 9/10

10:35 am-7:30 pm

3 stops27h 55m

Southampton Eastleigh

Thu 9/17

8:00 pm-2:59 pm

2 stops23h 59m

$854

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Thu 10/8

8:45 am-4:50 pm

2 stops27h 05m

Southampton Eastleigh

Mon 10/19

9:20 am-10:36 pm

2 stops18h 16m

$925

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Sun 9/6

10:40 am-7:30 pm

2 stops27h 50m

Southampton Eastleigh

Mon 9/21

9:20 am-9:30 pm

3 stops17h 10m

$945

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Tue 9/8

10:35 am-4:50 pm

3 stops25h 15m

Southampton Eastleigh

Tue 9/15

9:15 am-7:25 pm

2 stops15h 10m

$951

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Sun 9/6

5:35 pm-8:40 am

1 stop10h 05m

Southampton Eastleigh

Mon 9/21

9:20 am-10:25 pm

2 stops42h 05m

$954
Quickest round-trip

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Thu 10/8

5:35 pm-8:40 am

1 stop10h 05m

Southampton Eastleigh

Mon 10/19

9:20 am-4:05 pm

1 stop11h 45m

$1,054

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Sat 8/29

7:25 am-4:50 pm

2 stops28h 25m

Southampton Eastleigh

Sun 9/6

9:20 am-7:00 pm

2 stops14h 40m

$1,059

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Sun 9/13

5:30 pm-7:30 pm

2 stops21h 00m

Southampton Eastleigh

Mon 9/28

6:45 am-7:25 pm

2 stops17h 40m

$1,065

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Sun 9/6

8:25 pm-8:40 am

3 stops31h 15m

Southampton Eastleigh

Mon 9/21

5:20 pm-7:15 pm

3 stops30h 55m

$1,079

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from New York to Portsmouth takes 15 hours 36 minutes. Flights to Portsmouth from other popular cities in USA will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Portsmouth

The most flights from New York to Portsmouth are scheduled on a Monday (159 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (146 on average).

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 1.0 - 3.0 inches per month. December is typically the wettest month, when rainfall can reach 3.0 in. July is typically the driest time to visit Portsmouth when rainfall is around 1.0 in.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, JetBlue is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a round-trip flight to Portsmouth?

    A round-trip flight to Portsmouth will typically cost around $126, however they can be found for as little as $70.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, New York offers the quickest one-way flight (9 hours 30 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aerotel London Heathrow is the closest property to London Heathrow (0.0 mi away from London Heathrow).

See more FAQs

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