HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$287+ Cheap flights from the United States to Portsmouth, England

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — 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 from USA 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.

Cheap flight deals from USA to Portsmouth

Cheapest flights from USA to Portsmouth
Explore the most affordable flight options available from USA to Portsmouth. Find the lowest fares from popular airlines and budget airlines, 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 12/11. 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 12/124:25 pmORD - SOU
1 stop10h 25mDelta
Tue 1/205:35 pmSOU - ORD
1 stop26h 45mDelta
Deal found 12/11$871
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.
Thu 12/1110:36 amORD - SOU
2 stops15h 29mDelta
Tue 1/205:35 pmSOU - ORD
1 stop26h 45mDelta
Deal found 12/11$875
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 12/124:25 pmORD - SOU
1 stop10h 25mDelta
Fri 1/239:00 amSOU - ORD
2 stops18h 04mDelta
Deal found 12/11$881
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.
Thu 12/116:45 amORD - SOU
2 stops19h 20mDelta
Mon 1/199:25 amSOU - ORD
2 stops38h 20mDelta
Deal found 12/11$885
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.
Wed 12/313:35 pmMIA - SOU
2 stops20h 50mDelta
Tue 1/65:35 pmSOU - MIA
2 stops31h 51mDelta
Deal found 12/10$902
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 12/304:50 pmMIA - SOU
1 stop19h 10mDelta
Tue 1/65:35 pmSOU - MIA
2 stops31h 51mDelta
Deal found 12/10$919
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 12/124:25 pmORD - SOU
1 stop10h 25mDelta
Sat 1/179:25 amSOU - ORD
1 stop10h 55mDelta
Deal found 12/11$921
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.
Thu 12/1110:36 amORD - SOU
2 stops15h 29mDelta
Sat 1/179:25 amSOU - ORD
1 stop10h 55mDelta
Deal found 12/11$925
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

Find flight deals from USA to Portsmouth

Keep the following information in mind while searching for USA to Portsmouth flight deals. Data was last updated December 12, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$554
(Mytrip)

One-way from

$287
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$729
Provider with most accurate pricing for New York (NYC)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-London (LON) flights.
Search Deals
From USA to Portsmouth
Search Deals
One-way flight from USA to Portsmouth
Search Deals
High demand for flights, 0% potential price rise
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

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA to Portsmouth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from the United States to Portsmouth that are best for you.

Fly from

USA

Fly to

Portsmouth

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 60 results
1
2
3
...
6

Best time to book a flight from USA to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from USA 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 from the United States to Portsmouth

What is the cheapest month to book a flight from USA to Portsmouth?

Currently, October is the cheapest month in which you can book a flight from USA to Portsmouth (average of $95). Flying from USA to Portsmouth in June is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to P0R?

Find hourly flight availability from USA to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from USA to Portsmouth in the evening. Doing so could potentially save you 15% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from USA to Portsmouth?

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

Travelers seeking maximum savings on their USA to Portsmouth flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from USA to Portsmouth

Explore weekly flight availability from USA to Portsmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 12, 2025.

The most flights from US0 to P0R are scheduled on a Monday (52 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (51 on average).

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.
See what other customers who have flown with Delta, KLM, and Virgin Atlantic from the United States to Portsmouth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,432 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
675 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Aer Lingus
7.2
Good
1,394 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from USA to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from USA to Portsmouth?

    Departing from USA to Portsmouth will take you 10h. Airlines will cover a distance of 3428 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from USA to Portsmouth?

    When deciding which route to take from USA to Portsmouth consider New York John F Kennedy Intl - Southampton Eastleigh, San Francisco - Southampton Eastleigh or Newark - Southampton Eastleigh as they are the most popular.

  • What are the most reliable airlines from USA to Portsmouth?

    Before booking your flight to Portsmouth from USA, check out the most reliable airlines to get you to your destination on time: Air Canada (90%), Austrian Airlines (90%), United Airlines( 90%).

  • What are the cheapest flights from USA to Portsmouth?

    While on average a flight from USA to Portsmouth is generally $2,912, our data shows the cheapest flight currently is $264. When looking at the most popular route, (New York John F Kennedy Intl - Southampton Eastleigh), you can expect to pay $731 for that flight.

  • Can I find deals for flights from USA to Portsmouth that include hotel bookings?

    Yes. In addition to deals on USA to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to Portsmouth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Portsmouth.

  • Can I find deals for business class flights from USA to Portsmouth?

    Yes. Cheapflights offers flight deals from USA to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to Portsmouth?

    Currently, October is the cheapest month in which you can book a flight from USA to Portsmouth (average of $95). Flying from USA to Portsmouth in June is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

Alternative routes for USA to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
LaGuardia to Heathrow flights
Boston to Heathrow flights
John F Kennedy Intl to London City flights
Newark to Gatwick flights
LaGuardia to Gatwick flights
Los Angeles to Heathrow flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Stansted flights
O'Hare Intl to Heathrow flights
San Francisco to Heathrow flights
John F Kennedy Intl to Luton flights
Dallas/Fort Worth to Heathrow flights
Baltimore to Heathrow flights
Seattle to Heathrow flights
Boston to Gatwick flights
Miami to Heathrow flights
Newark to London City flights
Boston to London City flights
Newark to Stansted flights
Hobby to Heathrow flights
Newark to Luton flights
Atlanta to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Orlando to Heathrow flights
Denver to Heathrow flights
Philadelphia to Heathrow flights
Dulles Intl to London City flights
Los Angeles to Gatwick flights
Minneapolis to Heathrow flights
O'Hare Intl to Gatwick flights
Baltimore to Gatwick flights
George Bush Intcntl to Heathrow flights
Los Angeles to London City flights
Boston to Stansted flights
O'Hare Intl to London City flights
San Francisco to Gatwick flights
Tampa to Heathrow flights
Reagan-National to Gatwick flights
Dulles Intl to Stansted flights
Austin to Heathrow flights
San Francisco to London City flights
Detroit to Heathrow flights
Charlotte to Heathrow flights
Newark to Edinburgh flights
Dallas/Fort Worth to Gatwick flights
Orlando to Gatwick flights

Top 10 airlines flying from USA to Portsmouth

Discover the top 10 airlines that operate flights from USA to Portsmouth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$45Average$728FlexibilityNo cancel feeOn-time62%
Norse Atlantic UKCheapest$221Average$569FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$293Average$573FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$300Average$710FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$357Average$626FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$370Average$862FlexibilityNo cancel feeOn-time76%
PLAYCheapest$380Average$582FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$387Average$854FlexibilityNo cancel feeOn-time75%
FinnairCheapest$401Average$747FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$404Average$755FlexibilityNo cancel feeOn-time77%

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.