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Cheap flights from Portsmouth to North America from £201

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
2 Apr — 9 Apr1
1 adult

Cheap flight deals from Portsmouth to North America

Keep the following information in mind while searching for Portsmouth to North America flight deals. Data was last updated 28 March 2025.

Round-trip from

£420

One-way from

£201

Popular in

August

Cheapest in

January

Average price

£376
KLM
  • KLM
  • 5/5-19/5
  • 2 total stops
  • 35h 15m total
  • Portsmouth to North America
Search Deals
9/5
  • 9/5
  • 1 total stop
  • 30h 35m total
  • Portsmouth to North America
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£32 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Portsmouth to North America

Cheapest flights from Portsmouth to North America
Explore the most affordable flight options available from Portsmouth to North America. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2025.

Mon 5/509:20SOU - JFK
1 stop18h 30mKLM
Mon 19/519:15JFK - SOU
1 stop16h 45mKLM
Deal found 27/3£420
Mon 5/509:20SOU - JFK
2 stops17h 47mVirgin Atlantic
Mon 19/519:15JFK - SOU
1 stop16h 45mVirgin Atlantic
Deal found 27/3£424
Sun 11/509:20SOU - LGA
2 stops17h 02mDelta
Sun 18/511:55LGA - SOU
2 stops15h 50mDelta
Deal found 27/3£428
Sun 11/518:25SOU - BOS
1 stop27h 00mKLM
Sun 18/520:15BOS - SOU
1 stop31h 35mKLM
Deal found 27/3£432
Mon 2/619:25SOU - EWR
1 stop30h 35mMultiple Airlines
Thu 26/623:00EWR - SOU
1 stop11h 40mMultiple Airlines
Deal found 26/3£432
Mon 5/509:40SOU - JFK
3 stops35h 00mMultiple Airlines
Mon 19/518:55JFK - SOU
2 stops19h 35mMultiple Airlines
Deal found 27/3£458
Sun 11/509:20SOU - BOS
1 stop12h 05mDelta
Sun 18/520:45BOS - SOU
2 stops15h 15mDelta
Deal found 27/3£465
Mon 7/417:35SOU - JFK
1 stop24h 35mDelta
Tue 15/407:15JFK - SOU
2 stops20h 30mDelta
Deal found 27/3£523
Mon 28/417:35SOU - SFO
1 stop26h 10mDelta
Mon 19/513:45SFO - SOU
1 stop19h 15mDelta
Deal found 26/3£561
Sun 11/509:10SOU - EWR
1 stop11h 50mAer Lingus
Sun 18/517:30EWR - SOU
1 stop10h 40mAer Lingus
Deal found 27/3£564
Fri 9/520:00SOU - JFK
2 stops26h 15mAer Lingus
Fri 16/516:55JFK - SOU
1 stop17h 50mAer Lingus
Deal found 27/3£575
Sat 10/509:20SOU - MIA
2 stops18h 59mDelta
Sat 17/507:15MIA - SOU
2 stops20h 30mDelta
Deal found 26/3£581

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to North America 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 28 March 2025.
Use the filters below to find and compare flights from Portsmouth to North America that are best for you.

Fly from

Portsmouth

Fly to

North America

Route

Depart

Return

Price

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Mon 5/5

09:20-22:50

1 stop18h 30m

New York John F Kennedy Intl

Mon 19/5

19:15-17:00

1 stop16h 45m

£420

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Mon 5/5

09:20-22:07

2 stops17h 47m

New York John F Kennedy Intl

Mon 19/5

19:15-17:00

1 stop16h 45m

£424

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Sun 11/5

09:20-21:22

2 stops17h 02m

New York LaGuardia

Sun 18/5

11:55-08:45

2 stops15h 50m

£428

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Mon 2/6

19:25-21:00

1 stop30h 35m

Newark

Thu 26/6

23:00-15:40

1 stop11h 40m

£432

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 11/5

18:25-16:25

1 stop27h 00m

Boston Logan Intl

Sun 18/5

20:15-08:50

1 stop31h 35m

£432

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Mon 5/5

09:40-15:40

3 stops35h 00m

New York John F Kennedy Intl

Mon 19/5

18:55-19:30

2 stops19h 35m

£458

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 11/5

09:20-16:25

1 stop12h 05m

Boston Logan Intl

Sun 18/5

20:45-17:00

2 stops15h 15m

£465

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Mon 7/4

17:35-13:10

1 stop24h 35m

New York John F Kennedy Intl

Tue 15/4

07:15-08:45

2 stops20h 30m

£523

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 28/4

17:35-11:45

1 stop26h 10m

San Francisco

Mon 19/5

13:45-17:00

1 stop19h 15m

£561

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Sun 11/5

09:10-16:00

1 stop11h 50m

Newark

Sun 18/5

17:30-09:10

1 stop10h 40m

£564

Flights are sorted by cheapest return flights first.

Deals found on 26/3

Showing 1-10 of 55 results
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Best time to book a flight from Portsmouth to North America

Have a flexible travel schedule? Discover the best time to fly to North America 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 North America

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

Currently, January is the cheapest month in which you can book a flight from Portsmouth to North America (average of £575). Flying from Portsmouth to North America 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 NA?

Find hourly flight availability from Portsmouth to North America. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 March 2025.

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

Rainfall in North America by month

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

In terms of precipitation, rainfall in North America 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 North America when rainfall is around 71.0 mm.

Temperature in North America by month

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

If weather is an important factor for your trip to North America, 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 North America

Get insights into the airlines that provide service to North America. 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 North America. Reviews last updated 28 March 2025.
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

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
7,895 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

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
1,321 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

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
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

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
634 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

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
1,062 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

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 North America. 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 North America one-way?

    £404 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Delta and KLM, with prices starting from £1,091 and £1,130, respectively.

  • What are the most popular routes from Portsmouth to North America?

    The most popular route from Portsmouth to North America is Southampton Eastleigh - San Francisco. You may also consider Southampton Eastleigh - Miami or Southampton Eastleigh - New York John F Kennedy Intl.

  • What are the most reliable airlines from Portsmouth to North America?

    No one likes to see their flight delayed. When booking a flight from Portsmouth to North America consider choosing SriLankan Airlines (96%), Fiji Airways (92%) or Malaysia Airlines (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portsmouth to North America?

    On average you can expect to pay £1,996 for a flight from Portsmouth to North America. The cheapest flight overall is £383 while the most popular route, (Southampton Eastleigh - San Francisco) is currently priced at £598.

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

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

  • How can I find direct flights from Portsmouth to North America?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to North America 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 North America?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to North America (average of £575). Flying from Portsmouth to North America 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

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Top 10 airlines flying from Portsmouth to North America

Discover the top 10 airlines that operate flights from Portsmouth to North America. 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 28 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£8Average£564FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£247Average£640FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
PLAYCheapest£272Average£429FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
Air CanadaCheapest£289Average£513FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
TAP AIR PORTUGALCheapest£291Average£469FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£304Average£582FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£309Average£604FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£321Average£654FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Scandinavian AirlinesCheapest£321Average£542FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
SWISSCheapest£326Average£490FlexibilityNo cancel feeOn-time79%
Search SWISS flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to North America?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to North America from Portsmouth today with Cheapflights!

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

Cheapflights helps you find that perfect flight to North America from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

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

Yes, Cheapflights offers price alerts on Portsmouth to North America flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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