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Portsmouth

$367+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$514
(Trip.com)

One-way from

$367
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$516
From USA to Portsmouth
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One-way flight from USA to Portsmouth
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:30 pmORD - SOU
2 stops19h 10mMultiple Airlines
Tue 11/48:10 pmSOU - ORD
2 stops27h 10mMultiple Airlines
Deal found 9/13$514
This Mytrip deal was found by Cheapflights users on 9/14. 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 10/304:50 pmJFK - SOU
2 stops22h 50mMultiple Airlines
Thu 11/68:10 pmSOU - JFK
2 stops24h 59mMultiple Airlines
Deal found 9/14$519
This Mytrip deal was found by Cheapflights users on 9/15. 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 10/304:25 pmEWR - SOU
2 stops23h 15mMultiple Airlines
Thu 11/68:10 pmSOU - EWR
2 stops24h 39mMultiple Airlines
Deal found 9/15$520
This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:25 pmJFK - SOU
2 stops18h 10mMultiple Airlines
Tue 11/44:05 pmSOU - JFK
2 stops26h 45mMultiple Airlines
Deal found 9/13$542
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/204:55 pmJFK - SOU
1 stop10h 20mAer Lingus
Tue 11/412:25 pmSOU - JFK
1 stop12h 00mAer Lingus
Deal found 9/15$552
This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/284:50 pmORD - SOU
1 stop14h 05mAer Lingus
Tue 11/48:10 pmSOU - ORD
1 stop23h 50mAer Lingus
Deal found 9/13$580
This Expedia deal was found by Cheapflights users on 9/14. 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.
Wed 12/35:00 pmJFK - SOU
1 stop10h 45mAer Lingus
Wed 12/1712:25 pmSOU - JFK
1 stop12h 00mAer Lingus
Deal found 9/14$594
This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2811:05 amEWR - SOU
2 stops20h 50mMultiple Airlines
Tue 11/45:30 pmSOU - EWR
3 stops32h 00mMultiple Airlines
Deal found 9/13$595
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 10/298:40 pmORD - SOU
1 stop13h 55mAer Lingus
Wed 11/512:25 pmSOU - ORD
1 stop11h 30mAer Lingus
Deal found 9/14$638
This Mytrip deal was found by Cheapflights users on 9/15. 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 10/204:55 pmJFK - SOU
1 stop10h 20mMultiple Airlines
Tue 11/45:30 pmSOU - JFK
3 stops28h 50mMultiple Airlines
Deal found 9/15$648
This Mytrip deal was found by Cheapflights users on 9/15. 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 10/204:55 pmEWR - SOU
2 stops21h 35mMultiple Airlines
Tue 11/48:10 pmSOU - EWR
2 stops24h 50mMultiple Airlines
Deal found 9/15$651
This Billigflug deal was found by Cheapflights users on 9/13. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:45 pmJFK - SOU
1 stop9h 25mVirgin Atlantic
Tue 11/45:30 pmSOU - JFK
1 stop22h 55mVirgin Atlantic
Deal found 9/13$669

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 September 15, 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

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 10/28

7:30 pm-7:40 pm

2 stops19h 10m

Southampton Eastleigh

Tue 11/4

8:10 pm-5:20 pm

2 stops27h 10m

$514

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 10/30

6:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Thu 11/6

9:30 am-6:55 pm

1 stop14h 25m

$519

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Thu 10/30

10:05 am-7:40 pm

3 stops29h 35m

Southampton Eastleigh

Thu 11/6

8:10 pm-4:09 pm

2 stops24h 59m

$519

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Tue 10/28

5:25 pm-3:35 pm

2 stops18h 10m

Southampton Eastleigh

Tue 11/4

4:05 pm-1:50 pm

2 stops26h 45m

$542

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 10/20

4:55 pm-8:15 am

1 stop10h 20m

Southampton Eastleigh

Tue 11/4

12:25 pm-7:25 pm

1 stop12h 00m

$552

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Tue 10/28

11:05 am-11:55 am

2 stops20h 50m

Southampton Eastleigh

Tue 11/4

5:30 pm-8:30 pm

3 stops32h 00m

$595

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 10/30

6:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Thu 11/6

8:10 pm-8:55 pm

2 stops53h 45m

$647

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Mon 10/20

4:55 pm-8:15 am

1 stop10h 20m

Southampton Eastleigh

Tue 11/4

5:30 pm-5:20 pm

3 stops28h 50m

$648

NewarkSouthampton

EWR - SOU

EWRSOU

Newark

Mon 10/20

4:55 pm-7:30 pm

2 stops21h 35m

Southampton Eastleigh

Tue 11/4

8:10 pm-4:00 pm

2 stops24h 50m

$651

New YorkSouthampton

JFK - SOU

JFKSOU

New York John F Kennedy Intl

Tue 10/28

7:50 pm-8:20 am

1 stop32h 30m

Southampton Eastleigh

Tue 11/4

5:30 pm-9:00 am

2 stops44h 30m

$671

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, November is the cheapest month in which you can book a flight from USA to Portsmouth (average of $661). Flying from USA to Portsmouth in June is currently the most expensive (average of $1,097). 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 September 15, 2025.

When flying from USA to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.

The most flights from US0 to P0R are scheduled on a Monday (56 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (52 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 September 15, 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
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,385 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
664 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.2
Good
1,270 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 35m. Airlines will cover a distance of 3228 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from USA to Portsmouth one-way?

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as $367. Users have also found prices from $421 and $494 on Delta and KLM, respectively.

  • 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 Seattle/Tacoma Intl - 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 (94%), Air France (94%), Delta( 94%).

  • What are the cheapest flights from USA to Portsmouth?

    While on average a flight from USA to Portsmouth is generally $3,098, our data shows the cheapest flight currently is $347. When looking at the most popular route, (New York John F Kennedy Intl - Southampton Eastleigh), you can expect to pay $519 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, November is the cheapest month in which you can book a flight from USA to Portsmouth (average of $661). Flying from USA to Portsmouth in June is currently the most expensive (average of $1,097). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$45Average$720FlexibilityNo cancel feeOn-time62%
LufthansaCheapest$197Average$754FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$203Average$614FlexibilityNo cancel feeOn-time77%
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
SWISSCheapest$283Average$661FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$293Average$587FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$340Average$633FlexibilityNo cancel feeOn-time77%
Norse Atlantic UKCheapest$346Average$568FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$354Average$743FlexibilityNo cancel feeOn-time67%
KLMCheapest$365Average$870FlexibilityNo cancel feeOn-time75%

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