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Portsmouth

$307+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from USA to Portsmouth

Keep the following information in mind while searching for USA to Portsmouth flight deals. Data was last updated October 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$592
(Kiwi.com)

One-way from

$307
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$550
Provider with most accurate pricing for New York (NYC)-London (LON) flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-London (LON) flights.
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From USA to Portsmouth
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One-way flight from USA to Portsmouth
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/30. 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 11/279:45 amJFK - SOU
2 stops28h 55mMultiple Airlines
Thu 12/48:10 pmSOU - JFK
2 stops24h 59mMultiple Airlines
Deal found 10/30$538
This Mytrip deal was found by Cheapflights users on 10/30. 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 11/2711:05 amEWR - SOU
2 stops27h 35mMultiple Airlines
Thu 12/48:10 pmSOU - EWR
2 stops24h 33mMultiple Airlines
Deal found 10/30$538
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/410:40 pmBOS - SOU
1 stop15h 40mMultiple Airlines
Sat 12/139:30 amSOU - BOS
2 stops16h 25mMultiple Airlines
Deal found 10/28$635
This lastminute.com deal was found by Cheapflights users on 10/28. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:45 pmJFK - SOU
1 stop9h 25mVirgin Atlantic
Tue 12/98:40 amSOU - JFK
2 stops19h 34mVirgin Atlantic
Deal found 10/28$644
This Delta deal was found by Cheapflights users on 10/30. 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 11/245:45 pmJFK - SOU
1 stop9h 25mDelta
Mon 2/235:30 pmSOU - JFK
1 stop23h 00mDelta
Deal found 10/30$665
This Expedia deal was found by Cheapflights users on 10/28. 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 12/45:10 pmBOS - SOU
1 stop10h 35mAer Lingus
Sat 12/139:30 amSOU - BOS
1 stop14h 25mAer Lingus
Deal found 10/28$667
This Delta deal was found by Cheapflights users on 10/29. 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 11/242:50 pmJFK - SOU
2 stops21h 10mDelta
Tue 12/98:40 amSOU - JFK
1 stop33h 35mDelta
Deal found 10/29$667
This Delta deal was found by Cheapflights users on 10/30. 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 11/2510:07 amJFK - SOU
2 stops25h 53mDelta
Fri 2/278:40 amSOU - JFK
1 stop12h 05mDelta
Deal found 10/30$669
This Delta deal was found by Cheapflights users on 10/28. 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 11/242:50 pmJFK - SOU
2 stops21h 10mDelta
Mon 12/16:05 pmSOU - JFK
1 stop24h 10mDelta
Deal found 10/28$670
This Mytrip deal was found by Cheapflights users on 10/28. 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 11/247:25 pmJFK - SOU
2 stops19h 15mMultiple Airlines
Tue 12/99:20 amSOU - JFK
3 stops37h 30mMultiple Airlines
Deal found 10/28$675
This Delta deal was found by Cheapflights users on 10/28. 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 11/225:40 pmJFK - SOU
2 stops42h 45mDelta
Mon 12/16:05 pmSOU - JFK
1 stop24h 10mDelta
Deal found 10/28$681
This Delta deal was found by Cheapflights users on 10/29. 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 11/58:50 pmBOS - SOU
1 stop15h 35mDelta
Sun 11/96:05 pmSOU - BOS
1 stop24h 15mDelta
Deal found 10/29$715

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 October 30, 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

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 12/4

10:40 pm-7:20 pm

1 stop15h 40m

Southampton Eastleigh

Sat 12/13

9:30 am-8:55 pm

2 stops16h 25m

$635

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Wed 12/3

9:20 pm-5:25 pm

1 stop15h 05m

Southampton Eastleigh

Thu 1/8

5:30 pm-11:35 am

1 stop23h 05m

$665

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 11/23

5:45 pm-8:10 am

1 stop9h 25m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:30 am

1 stop23h 00m

$665

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 11/24

9:20 pm-5:00 pm

1 stop14h 40m

Southampton Eastleigh

Mon 12/1

6:05 pm-1:15 pm

1 stop24h 10m

$665

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 11/23

4:45 pm-8:10 am

1 stop10h 25m

Southampton Eastleigh

Mon 12/1

6:05 pm-1:15 pm

1 stop24h 10m

$665

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 12/4

5:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Sat 12/13

9:30 am-6:55 pm

1 stop14h 25m

$667

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 12/8

9:50 am-5:00 pm

2 stops26h 10m

Southampton Eastleigh

Thu 1/8

5:30 pm-11:35 am

1 stop23h 05m

$670

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 11/24

6:10 am-5:00 pm

2 stops29h 50m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:30 am

1 stop23h 00m

$670

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sun 12/7

10:08 am-5:25 pm

2 stops26h 17m

Southampton Eastleigh

Thu 1/8

5:30 pm-11:35 am

1 stop23h 05m

$670

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Sat 11/22

5:40 pm-5:25 pm

2 stops42h 45m

Southampton Eastleigh

Tue 12/2

5:30 pm-3:45 pm

1 stop27h 15m

$681

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
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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, 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 $493). 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 October 30, 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 October 20, 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.

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 October 30, 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
7,993 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,406 reviews
Delta
7.9
Good
7,993 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Virgin Atlantic
7.5
Good
670 reviews
Delta
7.9
Good
7,993 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Aer Lingus
7.2
Good
1,361 reviews
Delta
7.9
Good
7,993 reviews

Overall

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 9h 45m. Airlines will cover a distance of 3639 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, Los Angeles - 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: KLM (95%), Air France (95%), Delta( 95%).

  • What are the cheapest flights from USA to Portsmouth?

    While on average a flight from USA to Portsmouth is generally $3,109, our data shows the cheapest flight currently is $329. When looking at the most popular route, (New York John F Kennedy Intl - Southampton Eastleigh), you can expect to pay $592 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 $493). 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

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Alternative routes for USA to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$45Average$716FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$203Average$611FlexibilityNo cancel feeOn-time77%
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
SWISSCheapest$290Average$715FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$293Average$576FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$340Average$653FlexibilityNo cancel feeOn-time77%
Norse Atlantic UKCheapest$350Average$563FlexibilityNo cancel feeOn-timeN/A
PLAYCheapest$380Average$582FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$382Average$751FlexibilityNo cancel feeOn-time67%
KLMCheapest$387Average$902FlexibilityNo cancel feeOn-time75%

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