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Portsmouth

$366+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
Jun 15 — Jun 221
Mon 6/15
Mon 6/22
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 May 16, 2026.

This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/254:55 pm
JFK
-
SOU
1 stop10h 45m
Aer Lingus
Tue 6/99:20 am
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Deal found 5/11$806
This Mytrip deal was found by Cheapflights users on 5/11. 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 6/94:00 pm
LGA
-
SOU
2 stops22h 30m
Multiple Airlines
Mon 6/158:00 pm
SOU
-
LGA
2 stops24h 46m
Multiple Airlines
Deal found 5/11$858
This Mytrip deal was found by Cheapflights users on 5/15. 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.
Fri 7/313:45 pm
EWR
-
SOU
2 stops22h 45m
Multiple Airlines
Tue 8/48:00 pm
SOU
-
EWR
2 stops27h 16m
Multiple Airlines
Deal found 5/15$868
This Mytrip deal was found by Cheapflights users on 5/15. 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.
Fri 7/313:30 pm
LGA
-
SOU
2 stops23h 00m
Multiple Airlines
Tue 8/48:00 pm
SOU
-
LGA
2 stops24h 45m
Multiple Airlines
Deal found 5/15$870
This Mytrip deal was found by Cheapflights users on 5/13. 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 6/911:00 am
EWR
-
SOU
3 stops27h 30m
Multiple Airlines
Mon 6/156:25 pm
SOU
-
EWR
3 stops29h 40m
Multiple Airlines
Deal found 5/13$882
This Mytrip deal was found by Cheapflights users on 5/11. 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.
Mon 5/256:59 am
JFK
-
SOU
3 stops29h 46m
Multiple Airlines
Tue 6/98:00 pm
SOU
-
JFK
2 stops29h 05m
Multiple Airlines
Deal found 5/11$911
This Mytrip deal was found by Cheapflights users on 5/13. 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 8/265:40 pm
LGA
-
SOU
2 stops18h 10m
Multiple Airlines
Sat 9/128:00 pm
SOU
-
LGA
2 stops31h 36m
Multiple Airlines
Deal found 5/13$942
This Mytrip deal was found by Cheapflights users on 5/13. 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 6/94:15 pm
JFK
-
SOU
2 stops22h 15m
Multiple Airlines
Mon 6/157:20 pm
SOU
-
JFK
2 stops29h 45m
Multiple Airlines
Deal found 5/13$949
This Mytrip deal was found by Cheapflights users on 5/13. 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 8/2610:25 am
EWR
-
SOU
2 stops25h 25m
Multiple Airlines
Sat 9/128:00 pm
SOU
-
EWR
2 stops31h 30m
Multiple Airlines
Deal found 5/13$949
This Mytrip deal was found by Cheapflights users on 5/11. 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.
Mon 5/256:35 am
EWR
-
SOU
2 stops25h 15m
Multiple Airlines
Tue 6/99:20 am
SOU
-
EWR
2 stops18h 15m
Multiple Airlines
Deal found 5/11$951
This Mytrip deal was found by Cheapflights users on 5/14. 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 6/94:55 pm
JFK
-
SOU
1 stop9h 45m
Aer Lingus
Mon 6/159:20 am
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Deal found 5/14$962
This Mytrip deal was found by Cheapflights users on 5/15. 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 7/214:30 pm
EWR
-
SOU
2 stops22h 00m
Multiple Airlines
Sat 8/18:00 pm
SOU
-
EWR
2 stops24h 50m
Multiple Airlines
Deal found 5/15$966

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 May 16, 2026.

Popular in

December

Cheapest in

September

Average price

$689

Round-trip from

$644

One-way from

$366
Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 16, 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

Tue 6/9

4:00 pm-7:30 pm

2 stops22h 30m

Southampton Eastleigh

Mon 6/15

8:00 pm-3:46 pm

2 stops24h 46m

$858

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Wed 8/26

5:40 pm-4:50 pm

2 stops18h 10m

Southampton Eastleigh

Sat 9/12

8:00 pm-10:36 pm

2 stops31h 36m

$942

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 5/25

6:45 am-12:50 pm

2 stops25h 05m

Southampton Eastleigh

Tue 6/9

9:20 am-7:25 pm

2 stops15h 05m

$1,004

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Wed 9/30

4:40 pm-8:35 am

1 stop10h 55m

Southampton Eastleigh

Mon 10/5

5:20 pm-12:33 pm

1 stop24h 13m

$1,079

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Wed 8/26

10:14 am-8:45 am

2 stops17h 31m

Southampton Eastleigh

Sat 9/12

9:15 am-7:15 pm

1 stop15h 00m

$1,096

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Wed 8/19

10:59 am-8:45 am

2 stops16h 46m

Southampton Eastleigh

Sun 8/30

9:15 am-10:27 pm

2 stops18h 12m

$1,105
Quickest round-trip

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 9/28

4:40 pm-8:35 am

1 stop10h 55m

Southampton Eastleigh

Fri 10/2

9:05 am-2:35 pm

1 stop10h 30m

$1,116

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Fri 10/2

4:40 pm-8:45 am

1 stop11h 05m

Southampton Eastleigh

Tue 10/6

9:05 am-5:07 pm

1 stop13h 02m

$1,129

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Wed 8/19

1:10 pm-8:45 am

2 stops14h 35m

Southampton Eastleigh

Sun 8/30

9:15 am-2:35 pm

1 stop10h 20m

$1,134

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Fri 10/2

4:40 pm-8:45 am

1 stop11h 05m

Southampton Eastleigh

Sun 10/4

5:20 pm-12:33 pm

1 stop24h 13m

$1,179

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 54 resultsSorted by cheapest first
1
2
3
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6

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 16 hours 32 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 Friday (161 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (120 on average).

What are the most popular airlines that fly to Portsmouth?

The most popular airline flying from New York to Portsmouth is Aer Lingus.

Aer Lingus
Aer Lingus
From $618
KLM
KLM
From $581
Delta
Delta
From $781

What are the cheapest airlines that fly to Portsmouth?

The cheapest airline flying from New York to Portsmouth is Aer Lingus.

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).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portsmouth. Reviews last updated May 16, 2026.
Get a feel of what it's like to fly with KLM and Aer Lingus to the United Kingdom by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,517 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,517 reviews
KLM
7.8
Good
1,517 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Aer Lingus
7.3
Good
1,563 reviews
KLM
7.8
Good
1,517 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 $727, 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, Washington, D.C. offers the quickest one-way flight (9 hours 25 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. Aeropartment & Aerotel, London Heathrow Airport, Terminal 4, Ev Stations & Cheap Parking On Site! is the closest property to London Heathrow (0.0 mi away from London Heathrow).

See more FAQs

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