HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$450+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights to Portsmouth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Flights to Portsmouth in 2025

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 December 12, 2025.

This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:15 amJFK - SOU
2 stops17h 35mDelta
Tue 12/165:30 pmSOU - JFK
1 stop23h 00mDelta
Deal found 12/11$760
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:15 amJFK - SOU
2 stops17h 35mDelta
Mon 12/156:05 pmSOU - JFK
2 stops34h 09mDelta
Deal found 12/11$771
This Delta deal was found by Cheapflights users on 12/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:50 pmJFK - SOU
1 stop32h 20mDelta
Sun 1/185:45 pmSOU - JFK
1 stop27h 00mDelta
Deal found 12/9$933
This Delta deal was found by Cheapflights users on 12/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:50 pmJFK - SOU
1 stop32h 20mDelta
Sat 1/179:25 amSOU - JFK
2 stops17h 02mDelta
Deal found 12/9$943
This KLM deal was found by Cheapflights users on 12/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:45 pmJFK - SOU
1 stop9h 25mKLM
Thu 1/85:35 pmSOU - JFK
1 stop24h 45mKLM
Deal found 12/11$1,067
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:45 pmJFK - SOU
1 stop9h 25mDelta
Thu 1/89:00 amSOU - JFK
2 stops17h 27mDelta
Deal found 12/11$1,112
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:00 amEWR - SOU
2 stops21h 10mDelta
Thu 1/89:00 amSOU - EWR
2 stops20h 55mDelta
Deal found 12/11$1,116
This Delta deal was found by Cheapflights users on 12/10. 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 12/235:45 pmJFK - SOU
1 stop9h 25mDelta
Sun 1/115:45 pmSOU - JFK
1 stop30h 35mDelta
Deal found 12/10$1,188
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:40 pmJFK - SOU
1 stop11h 10mDelta
Tue 12/168:40 amSOU - JFK
1 stop12h 05mDelta
Deal found 12/11$1,233
This Delta deal was found by Cheapflights users on 12/10. 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 12/2312:30 pmLGA - SOU
2 stops14h 40mDelta
Sun 1/115:45 pmSOU - LGA
2 stops27h 45mDelta
Deal found 12/10$1,326
This Delta deal was found by Cheapflights users on 12/10. 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 12/2312:30 pmLGA - SOU
2 stops14h 40mDelta
Sat 1/109:25 amSOU - LGA
2 stops19h 17mDelta
Deal found 12/10$1,386
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:45 pmEWR - SOU
1 stop10h 00mAer Lingus
Mon 12/158:10 pmSOU - EWR
1 stop25h 05mAer Lingus
Deal found 12/11$1,487

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2025, 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 December 12, 2025.

Popular in

December

Cheapest in

January

Average price

$729

Round-trip from

$492

One-way from

$450
Highest demand for flights based on searches. 0% potential increase in price.
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 2025.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

New York

Route

Depart

Return

Price

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Sat 1/24

5:45 pm-8:45 am

1 stop10h 00m

Southampton Eastleigh

Sat 1/31

9:30 am-4:15 pm

1 stop11h 45m

$554

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Wed 1/21

6:50 pm-5:05 pm

1 stop17h 15m

Southampton Eastleigh

Tue 1/27

5:35 pm-11:40 am

1 stop23h 05m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 1/19

9:20 pm-5:05 pm

1 stop14h 45m

Southampton Eastleigh

Wed 1/28

5:35 pm-11:40 am

1 stop23h 05m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 1/19

9:20 pm-5:05 pm

1 stop14h 45m

Southampton Eastleigh

Mon 1/26

5:35 pm-11:40 am

1 stop23h 05m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Wed 1/21

5:45 pm-8:25 am

1 stop9h 40m

Southampton Eastleigh

Mon 1/26

5:35 pm-11:40 am

1 stop23h 05m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 1/19

5:45 pm-8:50 am

1 stop10h 05m

Southampton Eastleigh

Tue 1/27

9:25 am-3:45 pm

1 stop11h 20m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 1/18

5:45 pm-8:50 am

1 stop10h 05m

Southampton Eastleigh

Mon 1/26

5:35 pm-11:40 am

1 stop23h 05m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 1/18

5:45 pm-8:50 am

1 stop10h 05m

Southampton Eastleigh

Tue 1/27

5:35 pm-11:40 am

1 stop23h 05m

$671

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Tue 1/20

8:30 am-8:50 am

2 stops19h 20m

Southampton Eastleigh

Mon 1/26

5:35 pm-11:40 am

1 stop23h 05m

$675

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 1/18

10:20 am-8:50 am

2 stops17h 30m

Southampton Eastleigh

Wed 1/28

5:35 pm-11:40 am

1 stop23h 05m

$675

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 52 results
1
2
3
...
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 17 hours 53 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.

When is the cheapest time to fly to Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from New York to Portsmouth. Price data was last updated on December 16, 2024.

Users looking for the lowest fares to Portsmouth should consider flying on Monday at noon, when prices are typically cheapest. Budget-minded travelers will want to avoid Saturday evenings, when prices are usually at their highest.

Weekly flight availability to Portsmouth

The most flights from New York to Portsmouth are scheduled on a Thursday (146 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (118 on average).

What are the most popular airlines that fly to Portsmouth?

The most popular airlines flying from New York to Portsmouth are Aer Lingus and KLM.

Aer Lingus
Aer Lingus
From $623
Delta
Delta
From $515
KLM
KLM
From $656
Virgin Atlantic
Virgin Atlantic
From $802

What are the cheapest airlines that fly to Portsmouth?

The cheapest airlines flying from New York to Portsmouth are KLM and 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 December 12, 2025.
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
7.7
Good
1,432 reviews

Entertainment

7.1

Crew

8.3

Boarding

7.8

Overall

7.7

Food

7.2

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,432 reviews
KLM
7.7
Good
1,432 reviews

Entertainment

7.1

Crew

8.3

Boarding

7.8

Overall

7.7

Food

7.2

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Aer Lingus
7.2
Good
1,394 reviews
KLM
7.7
Good
1,432 reviews

Entertainment

7.1

Crew

8.3

Boarding

7.8

Overall

7.7

Food

7.2

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 $287, however they can be found for as little as $51.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Philadelphia offers the quickest one-way flight (9 hours 35 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 Airport Terminal 2-3 is the closest property to London Heathrow (0.0 mi away from London Heathrow).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Portsmouth by cabin class

Find flights to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.