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Portsmouth

$402+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
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 March 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/275:35 pm
EWR
-
SOU
1 stop10h 05m
Multiple Airlines
Wed 5/1312:35 pm
SOU
-
EWR
2 stops37h 25m
Multiple Airlines
Deal found 3/9$724
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/279:05 pm
JFK
-
SOU
1 stop17h 25m
Aer Lingus
Wed 5/139:20 am
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Deal found 3/9$739
This Mytrip deal was found by Cheapflights users on 3/9. 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 4/278:30 pm
JFK
-
SOU
2 stops18h 00m
Multiple Airlines
Wed 5/139:20 am
SOU
-
JFK
2 stops15h 00m
Multiple Airlines
Deal found 3/9$760
This Trip.com deal was found by Cheapflights users on 3/11. 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 5/114:55 pm
JFK
-
SOU
1 stop10h 45m
Aer Lingus
Tue 5/199:20 am
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Deal found 3/11$762
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:55 pm
JFK
-
SOU
1 stop14h 35m
Multiple Airlines
Mon 5/47:20 pm
SOU
-
JFK
2 stops32h 10m
Multiple Airlines
Deal found 3/13$769
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Thu 4/2311:55 pm
JFK
-
SOU
1 stop14h 35m
Aer Lingus
Thu 4/309:20 am
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Deal found 3/9$771
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/264:55 pm
JFK
-
SOU
1 stop10h 45m
Aer Lingus
Sun 5/39:20 am
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Deal found 3/12$790
This Virgin Atlantic deal was found by Cheapflights users on 3/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/279:10 pm
JFK
-
SOU
1 stop14h 40m
Virgin Atlantic
Wed 5/139:05 am
SOU
-
JFK
2 stops17h 45m
Virgin Atlantic
Deal found 3/9$792
This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:30 am
EWR
-
SOU
2 stops18h 15m
Delta
Wed 9/25:20 pm
SOU
-
EWR
2 stops28h 23m
Delta
Deal found 3/8$796
This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:30 am
EWR
-
SOU
2 stops18h 15m
Delta
Thu 9/35:20 pm
SOU
-
EWR
2 stops43h 15m
Delta
Deal found 3/8$797
This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:30 am
EWR
-
SOU
2 stops18h 15m
Delta
Fri 9/49:05 am
SOU
-
EWR
2 stops27h 30m
Delta
Deal found 3/8$802
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:55 pm
JFK
-
SOU
1 stop14h 35m
Aer Lingus
Mon 5/49:20 am
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Deal found 3/13$807

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 March 13, 2026.

Popular in

December

Cheapest in

September

Average price

$564

Round-trip from

$472

One-way from

$401
Highest demand for flights based on searches. 4% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 13, 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

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Thu 4/2

8:53 am-8:35 am

2 stops18h 42m

Southampton Eastleigh

Wed 4/8

5:20 pm-12:25 pm

1 stop24h 05m

$836

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Fri 4/3

2:00 pm-8:45 am

2 stops13h 45m

Southampton Eastleigh

Tue 4/7

9:05 am-9:23 pm

2 stops17h 18m

$846

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 4/13

5:00 pm-4:50 pm

2 stops18h 50m

Southampton Eastleigh

Wed 4/29

9:05 am-9:29 pm

2 stops17h 24m

$846

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 4/27

9:20 am-8:35 am

2 stops18h 15m

Southampton Eastleigh

Wed 5/13

9:05 am-8:00 pm

2 stops15h 55m

$846

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 4/13

10:30 am-8:35 am

2 stops17h 05m

Southampton Eastleigh

Wed 4/29

9:05 am-10:30 pm

2 stops18h 25m

$846

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 4/20

1:00 pm-8:35 am

2 stops14h 35m

Southampton Eastleigh

Mon 5/4

5:20 pm-5:15 pm

2 stops28h 55m

$884

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 3/29

6:00 am-8:35 am

2 stops21h 35m

Southampton Eastleigh

Wed 4/15

9:05 am-2:35 pm

1 stop10h 30m

$889

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Thu 4/23

12:00 pm-8:35 am

2 stops15h 35m

Southampton Eastleigh

Thu 4/30

9:05 am-10:19 pm

2 stops18h 14m

$896

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 3/29

6:00 am-8:35 am

2 stops21h 35m

Southampton Eastleigh

Sun 4/12

5:20 pm-5:05 pm

1 stop28h 45m

$939

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Sun 4/26

12:00 pm-8:35 am

2 stops15h 35m

Southampton Eastleigh

Sun 5/3

9:15 am-10:19 pm

2 stops18h 04m

$948

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 57 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 45 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 Wednesday (157 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (114 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
Delta
Delta
From $515
KLM
KLM
From $814

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 March 13, 2026.
Get a feel of what it's like to fly with 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.
Aer Lingus
7.2
Good
1,475 reviews

Entertainment

7.0

Boarding

7.4

Overall

7.2

Crew

8.1

Comfort

7.2

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.
Aer Lingus
7.2
Good
1,475 reviews
Aer Lingus
7.2
Good
1,475 reviews

Entertainment

7.0

Boarding

7.4

Overall

7.2

Crew

8.1

Comfort

7.2

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.

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 $127, however they can be found for as little as $48.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Hartford Bradley Intl offers the quickest one-way flight (9 hours 5 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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