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Cheap flights from Portsmouth to North America from £253

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
18 May — 25 May1
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 18 April 2026.

Sat 9/509:20
SOU
-
EWR
2 stops34h 39m
Multiple Airlines
Mon 11/517:20
EWR
-
SOU
2 stops21h 10m
Multiple Airlines
Deal found 16/4£430
Tue 2/609:20
SOU
-
YYZ
1 stop33h 00m
Multiple Airlines
Tue 9/618:15
YYZ
-
SOU
2 stops20h 15m
Multiple Airlines
Deal found 18/4£458
Tue 2/609:20
SOU
-
JFK
3 stops35h 20m
Multiple Airlines
Tue 9/617:10
JFK
-
SOU
2 stops21h 20m
Multiple Airlines
Deal found 18/4£477
Mon 4/509:20
SOU
-
JFK
1 stop15h 00m
British Airways
Mon 18/523:55
JFK
-
SOU
1 stop14h 35m
British Airways
Deal found 14/4£478
Mon 1/619:20
SOU
-
YYZ
2 stops24h 35m
Multiple Airlines
Mon 8/622:55
YYZ
-
SOU
1 stop15h 35m
Multiple Airlines
Deal found 17/4£484
Tue 2/609:20
SOU
-
EWR
2 stops34h 39m
Multiple Airlines
Tue 9/617:15
EWR
-
SOU
2 stops21h 15m
Multiple Airlines
Deal found 18/4£485
Mon 11/509:20
SOU
-
YYZ
1 stop11h 30m
Multiple Airlines
Mon 18/522:55
YYZ
-
SOU
1 stop15h 35m
Multiple Airlines
Deal found 13/4£499
Mon 1/609:20
SOU
-
YYZ
1 stop11h 30m
Multiple Airlines
Tue 2/616:15
YYZ
-
SOU
2 stops22h 15m
Multiple Airlines
Deal found 15/4£519
Mon 4/509:20
SOU
-
JFK
1 stop15h 00m
British Airways
Thu 14/516:55
JFK
-
SOU
1 stop10h 45m
British Airways
Deal found 14/4£526
Sat 9/509:20
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Mon 11/523:55
JFK
-
SOU
1 stop14h 35m
Aer Lingus
Deal found 16/4£527
Sun 3/520:00
SOU
-
JFK
1 stop28h 20m
British Airways
Thu 14/516:55
JFK
-
SOU
1 stop10h 45m
British Airways
Deal found 14/4£535
Sun 31/509:20
SOU
-
JFK
3 stops35h 20m
Multiple Airlines
Sun 7/617:10
JFK
-
SOU
2 stops21h 20m
Multiple Airlines
Deal found 16/4£536

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 18 April 2026.

Round-trip from

£430

One-way from

£253

Popular in

July

Cheapest in

September

Average price

£448
9/5-11/5
  • 9/5-11/5
  • 4 total stops
  • 55h 49m total
  • Portsmouth to North America
Search Deals
2/6
  • 2/6
  • 2 total stops
  • 31h 50m total
  • Portsmouth to North America
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£19 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 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 18 April 2026.
Use the filters below to find and compare flights from Portsmouth to North America that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Tue 2/6

09:20-14:59

2 stops34h 39m

Newark

Tue 9/6

17:15-19:30

2 stops21h 15m

£485

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 7/5

20:00-19:20

1 stop28h 20m

New York John F Kennedy Intl

Mon 11/5

21:05-19:30

1 stop17h 25m

£569

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 2/6

09:20-17:10

1 stop15h 50m

Seattle/Tacoma Intl

Tue 9/6

19:10-19:30

1 stop16h 20m

£595

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Wed 13/5

09:20-22:25

1 stop18h 05m

New York John F Kennedy Intl

Wed 3/6

21:05-19:30

1 stop17h 25m

£606

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Wed 13/5

09:20-22:25

1 stop18h 05m

New York John F Kennedy Intl

Sun 17/5

23:55-19:30

1 stop14h 35m

£617

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Mon 8/6

17:20-14:35

1 stop26h 15m

New York John F Kennedy Intl

Mon 22/6

19:10-16:50

1 stop16h 40m

£676

SouthamptonVancouver

SOU - YVR

SOUYVR

Southampton Eastleigh

Sat 16/5

09:15-22:10

2 stops20h 55m

Vancouver Intl

Mon 18/5

17:50-16:50

1 stop15h 00m

£693

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 14/10

09:20-15:50

1 stop11h 30m

Toronto Pearson Intl

Wed 4/11

17:25-16:35

1 stop18h 10m

£702

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sat 2/5

17:20-16:25

1 stop28h 05m

Boston Logan Intl

Wed 13/5

16:35-16:50

1 stop19h 15m

£707

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Wed 13/5

09:20-19:20

1 stop15h 00m

New York John F Kennedy Intl

Wed 3/6

21:05-16:50

1 stop14h 45m

£707

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 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 18 April 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 evening tend to be the most expensive. A flight in the morning could potentially save you up to 13% 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 18 April 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 18 April 2026.

The most flights from P0R to 0NA are scheduled on a Monday (50 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (49 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 18 April 2026.
Get a feel of what it's like to fly with KLM and Aer 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
7.8
Good
1,502 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,502 reviews
KLM
7.8
Good
1,502 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Aer Lingus
7.3
Good
1,513 reviews
KLM
7.8
Good
1,502 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.1

Comfort

7.7

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 50m. British Airways provides one of the quickest options available for as low as £595. The distance between Portsmouth and North America is about 4787 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 - Vancouver Intl or Southampton Eastleigh - Newark.

  • 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 Malaysia Airlines (87%), SriLankan Airlines (86%) or Fiji Airways (85%) 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 £2,528 for a flight from Portsmouth to North America. The cheapest flight overall is £390 while the most popular route, (Southampton Eastleigh - New York John F Kennedy Intl) is currently priced at £509.

  • 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.

See more FAQs

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Alternative routes for Portsmouth to North America

See prices for flight routes from nearby airports that may be better suited for you.
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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 18 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest£74Average£110FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Air CanadaCheapest£116Average£550FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapest£146Average£580FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£244Average£473FlexibilityNo cancel feeOn-time79%
Search SWISS flights
JetBlueCheapest£257Average£590FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
TAP AIR PORTUGALCheapest£273Average£477FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£281Average£468FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
AeromexicoCheapest£295Average£691FlexibilityNo cancel feeOn-timeN/A
Search Aeromexico flights
Scandinavian AirlinesCheapest£297Average£500FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapest£300Average£648FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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