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Cheap flights from Portsmouth to the United States from £195

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
5 May — 12 May1
1 adult

Cheap flight deals from Portsmouth to USA

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

Round-trip from

£394

One-way from

£195

Popular in

August

Cheapest in

January

Average price

£424
Virgin Atlantic
  • Virgin Atlantic
  • 13/6-20/6
  • 3 total stops
  • 31h 31m total
  • Portsmouth to USA
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2/6
  • 2/6
  • 1 total stop
  • 17h 55m total
  • Portsmouth to USA
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Portsmouth to USA

Cheapest flights from Portsmouth to USA
Explore the most affordable flight options available from Portsmouth to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Fri 13/617:35SOU - JFK
1 stop10h 15mVirgin Atlantic
Fri 20/606:29JFK - SOU
2 stops21h 16mVirgin Atlantic
Deal found 29/4£394
Sat 10/509:20SOU - JFK
1 stop11h 05mDelta
Mon 26/517:30JFK - SOU
1 stop10h 20mDelta
Deal found 28/4£418
Sat 10/509:20SOU - JFK
1 stop14h 45mKLM
Mon 26/517:30JFK - SOU
1 stop10h 20mKLM
Deal found 29/4£419
Tue 6/509:20SOU - LGA
2 stops16h 08mDelta
Mon 12/509:59LGA - SOU
2 stops17h 51mDelta
Deal found 29/4£422
Wed 28/509:20SOU - BOS
1 stop14h 00mKLM
Wed 4/623:35BOS - SOU
2 stops12h 25mKLM
Deal found 30/4£427
Thu 26/609:30SOU - EWR
2 stops27h 14mDelta
Sun 29/618:20EWR - SOU
2 stops42h 30mDelta
Deal found 29/4£452
Thu 15/509:40SOU - JFK
2 stops17h 30mMultiple Airlines
Sun 18/520:25JFK - SOU
2 stops18h 05mMultiple Airlines
Deal found 29/4£459
Wed 14/509:20SOU - BOS
1 stop12h 05mDelta
Tue 27/518:35BOS - SOU
1 stop9h 10mDelta
Deal found 29/4£476
Thu 15/520:00SOU - JFK
1 stop22h 25mAer Lingus
Sun 18/519:00JFK - SOU
2 stops19h 30mAer Lingus
Deal found 29/4£533
Thu 15/509:40SOU - EWR
1 stop11h 20mAer Lingus
Sun 18/517:30EWR - SOU
1 stop10h 40mAer Lingus
Deal found 29/4£568
Fri 13/617:35SOU - BOS
1 stop27h 45mVirgin Atlantic
Fri 20/618:35BOS - SOU
1 stop9h 10mVirgin Atlantic
Deal found 29/4£576
Sun 29/617:35SOU - BOS
2 stops35h 16mMultiple Airlines
Fri 5/920:40BOS - SOU
2 stops31h 05mMultiple Airlines
Deal found 30/4£591

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to USA 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 858,174 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Portsmouth to the United States that are best for you.

Fly from

Portsmouth

Fly to

USA

Route

Depart

Return

Price

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Fri 13/6

17:35-22:50

1 stop10h 15m

New York John F Kennedy Intl

Fri 20/6

06:29-08:45

2 stops21h 16m

£394

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Sat 10/5

09:20-19:05

1 stop14h 45m

New York John F Kennedy Intl

Mon 26/5

10:30-08:50

2 stops17h 20m

£419

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Sat 10/5

09:20-23:03

2 stops18h 43m

New York LaGuardia

Mon 26/5

10:59-08:50

2 stops16h 51m

£422

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Wed 28/5

09:20-18:20

1 stop14h 00m

Boston Logan Intl

Wed 4/6

23:35-17:00

2 stops12h 25m

£427

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Thu 26/6

09:30-07:44

2 stops27h 14m

Newark

Sun 29/6

18:20-17:50

2 stops42h 30m

£452

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 15/5

09:40-22:10

2 stops17h 30m

New York John F Kennedy Intl

Sun 18/5

20:25-19:30

2 stops18h 05m

£459

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Wed 14/5

09:20-16:25

1 stop12h 05m

Boston Logan Intl

Tue 27/5

18:35-08:45

1 stop9h 10m

£476

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 15/5

20:00-13:25

1 stop22h 25m

New York John F Kennedy Intl

Sun 18/5

19:00-19:30

2 stops19h 30m

£533

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Thu 15/5

09:40-16:00

1 stop11h 20m

Newark

Sun 18/5

17:30-09:10

1 stop10h 40m

£568

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Fri 13/6

17:35-16:20

1 stop27h 45m

Boston Logan Intl

Fri 20/6

18:35-08:45

1 stop9h 10m

£576

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 50 results
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Best time to book a flight from Portsmouth to USA

Have a flexible travel schedule? Discover the best time to fly to USA from Portsmouth with our price prediction graph.
Estimated return 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 Portsmouth to the United States

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

Currently, January is the cheapest month in which you can book a flight from Portsmouth to USA (average of £575). Flying from Portsmouth to USA in July is currently the most expensive (average of £811). 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 P0R to US?

Find hourly flight availability from Portsmouth to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to USA as you normally would.

Weekly flight availability from Portsmouth to USA

Explore weekly flight availability from Portsmouth to USA. 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 30 April 2025.

The most flights from P0R to US0 are scheduled on a Monday (53 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (43 on average).

Rainfall in USA by month

Plan your trip to USA by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in USA ranges from 71.0 - 114.0 inches per month. July is typically the wettest month, when rainfall can reach 114.0 mm. February is typically the driest time to visit USA when rainfall is around 71.0 mm.

Temperature in USA by month

Plan your trip to USA by taking into account the average temperature totals by month.

If weather is an important factor for your trip to USA, 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 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated 30 April 2025.
Read through reviews of airlines operating flights from Portsmouth to USA, such as Delta, KLM and Virgin Atlantic. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

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

    One-way options have recently been found by users for as low as £438 on Aer Lingus. Other airlines that offer cheap prices include Delta from £1,122 and KLM from £1,125 one-way.

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

    Most travelers choose Southampton Eastleigh - New York John F Kennedy Intl, Southampton Eastleigh - Seattle/Tacoma Intl or Southampton Eastleigh - Houston Hobby when deciding on the best route from Portsmouth to USA.

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

    The top 3 most reliable airlines when flying from Portsmouth to USA are United Airlines (94%), Air Canada (88%) and Austrian Airlines (88%).

  • What are the cheapest flights from Portsmouth to USA?

    While on average a flight from Portsmouth to USA is generally £1,693, our data shows the cheapest flight currently is £374. When looking at the most popular route, (Southampton Eastleigh - New York John F Kennedy Intl), you can expect to pay £394 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to USA 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 Portsmouth to USA?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to USA (average of £575). Flying from Portsmouth to USA in July is currently the most expensive (average of £811). 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

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Alternative routes for Portsmouth to USA

See prices for flight routes from nearby airports that may be better suited for you.
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Heathrow to Tampa flights
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Top 10 airlines flying from Portsmouth to USA

Discover the top 10 airlines that operate flights from Portsmouth to USA. 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 858,174 searches. Data last updated 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£8Average£546FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£238Average£610FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
PLAYCheapest£263Average£412FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
SWISSCheapest£278Average£453FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Air CanadaCheapest£279Average£524FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
TAP AIR PORTUGALCheapest£281Average£456FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£293Average£547FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£294Average£564FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Scandinavian AirlinesCheapest£309Average£547FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapest£334Average£536FlexibilityNo cancel feeOn-time50%
Search Air Transat flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to USA?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portsmouth to USA. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to USA?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to USA from Portsmouth.

Can Cheapflights find flights from Portsmouth to USA with no change fees?

Yes! Cheapflights helps users easily find flights from Portsmouth to USA with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to USA become cheaper?

Not ready to book yet? You can track prices for flights from Portsmouth to USA on Cheapflights with our Price Alert feature and get notified when better prices are available.

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