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Cheap flights from Portsmouth to North America from £267

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
4 Mar — 11 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to North America

Enter your travel dates to find the best prices.

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 2 February 2026.

Wed 18/308:50
SOU
-
JFK
1 stop15h 30m
KLM
Wed 25/317:40
JFK
-
SOU
1 stop10h 40m
KLM
Deal found 31/1£516
Mon 16/319:55
SOU
-
BOS
1 stop30h 00m
Multiple Airlines
Mon 23/320:50
BOS
-
SOU
2 stops16h 40m
Multiple Airlines
Deal found 31/1£517
Sun 1/317:45
SOU
-
JFK
1 stop30h 35m
Virgin Atlantic
Tue 17/318:45
JFK
-
SOU
1 stop18h 15m
Virgin Atlantic
Deal found 31/1£522
Mon 16/317:40
SOU
-
BOS
1 stop24h 40m
KLM
Mon 23/320:10
BOS
-
SOU
1 stop16h 50m
KLM
Deal found 31/1£530
Wed 18/308:50
SOU
-
BOS
1 stop15h 05m
Delta
Wed 25/309:05
BOS
-
SOU
2 stops19h 15m
Delta
Deal found 1/2£534
Wed 18/308:50
SOU
-
JFK
2 stops16h 39m
Virgin Atlantic
Wed 25/318:45
JFK
-
SOU
1 stop9h 35m
Virgin Atlantic
Deal found 31/1£537
Wed 18/308:50
SOU
-
BOS
2 stops26h 25m
Virgin Atlantic
Wed 25/309:05
BOS
-
SOU
2 stops19h 15m
Virgin Atlantic
Deal found 1/2£537
Wed 18/309:25
SOU
-
EWR
2 stops14h 00m
Multiple Airlines
Wed 25/320:35
EWR
-
SOU
2 stops16h 45m
Multiple Airlines
Deal found 31/1£540
Thu 19/309:30
SOU
-
JFK
1 stop14h 55m
Aer Lingus
Thu 26/318:00
JFK
-
SOU
1 stop10h 45m
Aer Lingus
Deal found 2/2£547
Sun 1/316:05
SOU
-
YYZ
2 stops31h 10m
Multiple Airlines
Sun 8/320:40
YYZ
-
SOU
2 stops19h 00m
Multiple Airlines
Deal found 1/2£552
Tue 17/308:50
SOU
-
YYZ
1 stop11h 50m
KLM
Tue 24/318:50
YYZ
-
SOU
1 stop9h 30m
KLM
Deal found 31/1£563
Thu 12/309:30
SOU
-
JFK
2 stops31h 55m
Multiple Airlines
Thu 26/318:00
JFK
-
SOU
1 stop10h 45m
Multiple Airlines
Deal found 2/2£565

Find 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 2 February 2026.

Round-trip from

£516

One-way from

£267

Popular in

July

Cheapest in

September

Average price

£358
KLM
  • KLM
  • 18/3-25/3
  • 2 total stops
  • 26h 10m total
  • Portsmouth to North America
Search Deals
25/4
  • 25/4
  • 2 total stops
  • 47h 30m total
  • Portsmouth to North America
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£28 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 February 2026
Search Deals

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 2 February 2026.
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

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Mon 16/3

17:40-14:20

1 stop24h 40m

Boston Logan Intl

Mon 23/3

20:10-17:00

1 stop16h 50m

£530

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Wed 18/3

08:50-19:55

1 stop15h 05m

Boston Logan Intl

Wed 25/3

09:05-08:20

2 stops19h 15m

£534

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Wed 18/3

08:50-19:55

1 stop15h 05m

Boston Logan Intl

Wed 25/3

21:50-08:20

1 stop30h 30m

£534

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Wed 18/3

08:50-21:29

2 stops16h 39m

New York John F Kennedy Intl

Wed 25/3

18:45-08:20

1 stop9h 35m

£537

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Wed 18/3

08:50-07:15

2 stops26h 25m

Boston Logan Intl

Wed 25/3

09:05-08:20

2 stops19h 15m

£537

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 19/3

09:30-20:25

1 stop14h 55m

New York John F Kennedy Intl

Thu 26/3

18:00-08:45

1 stop10h 45m

£547

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 12/3

09:30-13:25

2 stops31h 55m

New York John F Kennedy Intl

Thu 26/3

18:00-08:45

1 stop10h 45m

£565

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 12/3

08:50-20:20

1 stop15h 30m

New York John F Kennedy Intl

Thu 26/3

22:20-17:00

1 stop14h 40m

£570

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 17/3

16:05-16:40

2 stops28h 35m

Toronto Pearson Intl

Tue 24/3

18:10-15:35

2 stops17h 25m

£575

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Tue 17/3

08:50-23:24

2 stops18h 34m

Miami

Tue 24/3

11:23-08:20

2 stops16h 57m

£575

Flights are sorted by cheapest return flights first.

Deals found on 31/1

Showing 1-10 of 60 results
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2
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6

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, October is the cheapest month in which you can book a flight from Portsmouth to North America (average of £88). Flying from Portsmouth to North America in December is currently the most expensive (average of £294). 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 2 February 2026.

One of the essential ways to save on airfare from Portsmouth to North America is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 8% on airfare.

What is the cheapest day to fly from Portsmouth to North America?

Use this chart to determine the cheapest time to fly return from Portsmouth to North America. Price data was last updated on 31 January 2026.

Travellers seeking maximum savings on their Portsmouth to North America flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to North America

Explore weekly flight availability from Portsmouth to North America. 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 2 February 2026.

The most flights from P0R to 0NA are scheduled on a Thursday (50 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (35 on average).

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 2 February 2026.
Get a feel of what it's like to fly with KLM, Virgin Atlantic, andAer Lingus from Portsmouth to North America by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,446 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Overall

7.7

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,446 reviews
KLM
7.7
Good
1,446 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Overall

7.7

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,446 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Overall

7.7

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Aer Lingus
7.2
Good
1,444 reviews
KLM
7.7
Good
1,446 reviews
Check prices

Food

7.3

Boarding

7.8

Comfort

7.6

Entertainment

7.1

Overall

7.7

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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.

  • How long is the flight from Portsmouth to North America?

    A quick flight from Portsmouth to North America can take about 15h 05m. KLM provides one of the quickest options available for as low as £534. The distance between Portsmouth and North America is about 3228 mi. Both multi-stop and direct flights can be found to your destination and back.

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

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

  • 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 (94%), Air Canada (88%) or Austrian Airlines (88%) 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 £2,573 for a flight from Portsmouth to North America. The cheapest flight overall is £335 while the most popular route, (Southampton Eastleigh - New York John F Kennedy Intl) is currently priced at £532.

  • 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, October is the cheapest month in which you can book a flight from Portsmouth to North America (average of £88). Flying from Portsmouth to North America in December is currently the most expensive (average of £294). 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 Portsmouth to North America

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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 2 February 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£88Average£572FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
DeltaCheapest£144Average£571FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£212Average£509FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
TAP AIR PORTUGALCheapest£221Average£463FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IberiaCheapest£234Average£558FlexibilityNo cancel feeOn-time77%
Search Iberia flights
PLAYCheapest£263Average£405FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
FinnairCheapest£268Average£505FlexibilityNo cancel feeOn-time76%
Search Finnair flights
SWISSCheapest£272Average£465FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IcelandairCheapest£278Average£477FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£279Average£492FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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