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Cheap flights from Portsmouth to North America from £304

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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
25 May — 1 Jun1
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 25 April 2026.

Wed 10/620:00
SOU
-
YYZ
2 stops24h 00m
Multiple Airlines
Tue 30/622:05
YYZ
-
SOU
1 stop32h 00m
Multiple Airlines
Deal found 21/4£484
Fri 5/620:00
SOU
-
YYZ
1 stop23h 00m
Multiple Airlines
Fri 12/618:15
YYZ
-
SOU
2 stops33h 20m
Multiple Airlines
Deal found 21/4£553
Mon 8/609:20
SOU
-
JFK
3 stops35h 20m
Multiple Airlines
Mon 15/618:55
JFK
-
SOU
2 stops19h 35m
Multiple Airlines
Deal found 23/4£557
Fri 5/609:20
SOU
-
YYZ
1 stop11h 30m
Aer Lingus
Fri 12/617:35
YYZ
-
SOU
1 stop20h 55m
Aer Lingus
Deal found 21/4£566
Thu 7/517:20
SOU
-
JFK
1 stop25h 20m
British Airways
Mon 11/523:55
JFK
-
SOU
1 stop14h 35m
British Airways
Deal found 23/4£566
Mon 8/609:20
SOU
-
EWR
2 stops34h 39m
Multiple Airlines
Mon 15/617:45
EWR
-
SOU
2 stops20h 45m
Multiple Airlines
Deal found 23/4£567
Mon 4/509:20
SOU
-
EWR
2 stops32h 55m
Multiple Airlines
Sun 17/517:45
EWR
-
SOU
2 stops20h 45m
Multiple Airlines
Deal found 22/4£567
Mon 8/609:20
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Mon 15/623:55
JFK
-
SOU
1 stop14h 35m
Aer Lingus
Deal found 23/4£568
Mon 4/509:20
SOU
-
JFK
1 stop15h 00m
British Airways
Sun 17/523:55
JFK
-
SOU
1 stop14h 35m
British Airways
Deal found 22/4£573
Sun 7/620:00
SOU
-
YYZ
1 stop20h 25m
Multiple Airlines
Sun 14/620:45
YYZ
-
SOU
1 stop15h 05m
Multiple Airlines
Deal found 23/4£574
Fri 5/609:20
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Fri 12/616:55
JFK
-
SOU
1 stop10h 45m
Aer Lingus
Deal found 21/4£587
Tue 19/509:20
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Tue 9/621:05
JFK
-
SOU
1 stop17h 25m
Aer Lingus
Deal found 21/4£603

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 25 April 2026.

Round-trip from

£484

One-way from

£304

Popular in

July

Cheapest in

September

Average price

£450
10/6-30/6
  • 10/6-30/6
  • 3 total stops
  • 56h 00m total
  • Portsmouth to North America
Search Deals
7/6
  • 7/6
  • 2 total stops
  • 24h 00m 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 (£6 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 25 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

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 7/5

17:20-19:20

1 stop31h 00m

New York John F Kennedy Intl

Mon 11/5

23:55-19:30

1 stop14h 35m

£567

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 4/6

09:20-19:20

1 stop15h 00m

New York John F Kennedy Intl

Thu 11/6

16:55-08:40

1 stop10h 45m

£567

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 4/6

09:20-17:10

1 stop15h 50m

Seattle/Tacoma Intl

Thu 11/6

19:10-19:30

1 stop16h 20m

£632

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Mon 8/6

09:05-19:15

1 stop15h 10m

New York John F Kennedy Intl

Mon 22/6

23:30-16:50

2 stops12h 20m

£657

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Mon 1/6

19:20-14:40

2 stops24h 20m

Miami

Wed 17/6

16:40-08:45

2 stops35h 05m

£684

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 6/9

17:20-11:50

1 stop26h 30m

Los Angeles Los Angeles

Wed 16/9

13:50-08:35

1 stop34h 45m

£687

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Mon 31/8

17:20-11:50

1 stop26h 30m

Los Angeles Los Angeles

Mon 28/9

13:50-16:50

1 stop19h 00m

£687

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Tue 1/9

17:20-11:50

1 stop26h 30m

Los Angeles Los Angeles

Wed 30/9

16:45-16:50

1 stop16h 05m

£687

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Mon 31/8

17:20-14:45

1 stop29h 25m

Los Angeles Los Angeles

Wed 30/9

16:45-16:50

1 stop16h 05m

£687

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Mon 24/8

18:05-13:20

1 stop24h 15m

Toronto Pearson Intl

Wed 9/9

18:10-16:50

2 stops17h 40m

£690

Flights are sorted by cheapest return flights first.

Deals found on 20/4

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 25 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 afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 10% 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 25 April 2026.

The most flights from P0R to 0NA are scheduled on a Monday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (53 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 25 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
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.3

Crew

8.4

Overall

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
1,508 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.3

Crew

8.4

Overall

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
1,533 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.3

Crew

8.4

Overall

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. British Airways provides one of the quickest options available for as low as £567. The distance between Portsmouth and North America is about 3414 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 - Vancouver Intl. You may also consider Southampton Eastleigh - New York John F Kennedy 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 £2,174 for a flight from Portsmouth to North America. The cheapest flight overall is £409 while the most popular route, (Southampton Eastleigh - Vancouver Intl) is currently priced at £639.

  • 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 25 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest£74Average£110FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Air CanadaCheapest£116Average£533FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapest£146Average£581FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IberiaCheapest£236Average£591FlexibilityNo cancel feeOn-time77%
Search Iberia flights
SWISSCheapest£244Average£472FlexibilityNo cancel feeOn-time79%
Search SWISS flights
JetBlueCheapest£257Average£589FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
TAP AIR PORTUGALCheapest£273Average£476FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£281Average£469FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£297Average£517FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapest£299Average£649FlexibilityNo 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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