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Portsmouth

$322+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Apr 25 — May 21
Sat 4/25
Sat 5/2
1 adult, Economy
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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 March 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Sat 5/95:35 pm
EWR
-
SOU
1 stop10h 00m
Multiple Airlines
Sat 5/168:05 pm
SOU
-
EWR
1 stop29h 55m
Multiple Airlines
Deal found 3/25$789
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 5/54:55 pm
JFK
-
SOU
1 stop10h 10m
Multiple Airlines
Tue 5/128:00 pm
SOU
-
JFK
2 stops55h 30m
Multiple Airlines
Deal found 3/22$803
This Mytrip deal was found by Cheapflights users on 3/23. 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 5/78:30 pm
JFK
-
SOU
2 stops18h 00m
Multiple Airlines
Thu 5/149:20 am
SOU
-
JFK
2 stops15h 00m
Multiple Airlines
Deal found 3/23$820
This Trip.com deal was found by Cheapflights users on 3/24. 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.
Sun 5/1010:35 am
MIA
-
SOU
2 stops27h 15m
Multiple Airlines
Mon 5/187:20 pm
SOU
-
MIA
2 stops40h 50m
Multiple Airlines
Deal found 3/24$822
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Thu 5/75:35 pm
EWR
-
SOU
1 stop10h 05m
Multiple Airlines
Thu 5/148:00 pm
SOU
-
EWR
2 stops30h 00m
Multiple Airlines
Deal found 3/23$822
This Trip.com deal was found by Cheapflights users on 3/21. 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.
Wed 7/298:25 pm
EWR
-
SOU
2 stops18h 05m
Multiple Airlines
Thu 8/69:20 am
SOU
-
EWR
2 stops14h 55m
Multiple Airlines
Deal found 3/21$826
This Mytrip deal was found by Cheapflights users on 3/25. 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.
Sat 5/94:55 pm
JFK
-
SOU
1 stop10h 40m
Aer Lingus
Sat 5/169:20 am
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Deal found 3/25$828
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 4/274:55 pm
JFK
-
SOU
1 stop10h 45m
Multiple Airlines
Tue 5/126:10 pm
SOU
-
JFK
2 stops50h 45m
Multiple Airlines
Deal found 3/23$842
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 6/511:00 pm
EWR
-
SOU
1 stop15h 30m
Multiple Airlines
Sat 6/138:05 pm
SOU
-
EWR
1 stop29h 55m
Multiple Airlines
Deal found 3/21$856
This Mytrip deal was found by Cheapflights users on 3/25. 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.
Sat 5/99:05 pm
JFK
-
SOU
1 stop17h 25m
Multiple Airlines
Sat 5/165:20 pm
SOU
-
JFK
2 stops31h 00m
Multiple Airlines
Deal found 3/25$861
This Expedia deal was found by Cheapflights users on 3/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:55 pm
JFK
-
SOU
1 stop14h 35m
Aer Lingus
Wed 4/299:20 am
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Deal found 3/23$871
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 5/811:00 pm
EWR
-
SOU
1 stop15h 30m
Multiple Airlines
Fri 5/159:25 am
SOU
-
EWR
2 stops16h 35m
Multiple Airlines
Deal found 3/24$872

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 March 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$789
(Kiwi.com)

One-way from

$322
(Connections by easyJet)

Popular in

December

Cheapest in

September

Average price

$576
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
Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 26, 2026.
Use the filters below to find and compare flights from the United States to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 9/13

10:45 pm-8:35 am

2 stops25h 50m

Southampton Eastleigh

Mon 9/28

5:20 pm-6:48 pm

2 stops33h 28m

$956

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 9/21

7:45 am-4:50 pm

2 stops25h 05m

Southampton Eastleigh

Fri 10/9

9:05 am-2:45 pm

1 stop13h 40m

$965

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 9/14

11:15 am-4:50 pm

2 stops21h 35m

Southampton Eastleigh

Tue 9/22

9:05 am-2:45 pm

1 stop13h 40m

$965

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 9/22

11:45 am-4:50 pm

2 stops21h 05m

Southampton Eastleigh

Mon 10/5

5:20 pm-11:50 am

1 stop26h 30m

$965

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 9/9

7:00 am-8:35 am

2 stops17h 35m

Southampton Eastleigh

Tue 9/22

9:05 am-2:45 pm

1 stop13h 40m

$965

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 7/21

1:45 pm-5:35 pm

1 stop19h 50m

Southampton Eastleigh

Tue 8/11

6:05 pm-11:45 am

1 stop25h 40m

$973

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 4/27

6:20 am-8:35 am

2 stops18h 15m

Southampton Eastleigh

Mon 5/4

5:20 pm-11:12 pm

2 stops37h 52m

$977

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 7/19

7:00 am-5:35 pm

2 stops26h 35m

Southampton Eastleigh

Tue 8/11

6:05 pm-11:45 am

1 stop25h 40m

$978

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Tue 5/5

5:35 pm-5:40 pm

2 stops19h 05m

Southampton Eastleigh

Tue 5/12

9:20 am-4:05 pm

1 stop11h 45m

$981

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 9/9

5:26 pm-4:50 pm

2 stops18h 24m

Southampton Eastleigh

Mon 9/28

5:20 pm-12:36 pm

1 stop24h 16m

$986

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from USA to Portsmouth (average of $51). Flying from USA to Portsmouth in June is currently the most expensive (average of $473). 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 March 26, 2026.

It’s typically best to fly out from USA to Portsmouth in the evening. Doing so could potentially save you 14% 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 March 23, 2026.

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

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 26, 2026.
See what other customers who have flown with Delta,KLM, andAer Lingus 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
8,330 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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
8,330 reviews
Delta
7.9
Good
8,330 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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
7.8
Good
1,478 reviews
Delta
7.9
Good
8,330 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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
1,489 reviews
Delta
7.9
Good
8,330 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

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 18h 24m. Airlines will cover a distance of 4172 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, Newark - Southampton Eastleigh or San Francisco - 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 (86%), Austrian Airlines (86%), United Airlines( 86%).

  • What are the cheapest flights from USA to Portsmouth?

    While on average a flight from USA to Portsmouth is generally $3,130, our data shows the cheapest flight currently is $275. When looking at the most popular route, (New York John F Kennedy Intl - Southampton Eastleigh), you can expect to pay $827 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, February is the cheapest month in which you can book a flight from USA to Portsmouth (average of $51). Flying from USA to Portsmouth in June is currently the most expensive (average of $473). 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.

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 March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$45Average$683FlexibilityNo cancel feeOn-time62%
Norse Atlantic UKCheapest$129Average$573FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$203Average$584FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$291Average$787FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$293Average$671FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$293Average$527FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$294Average$656FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$417Average$795FlexibilityNo cancel feeOn-time67%
PLAYCheapest$422Average$556FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$423Average$816FlexibilityNo cancel feeOn-timeN/A

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