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Cheap flights from Portsmouth to North America from £309

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
13 Jul — 20 Jul1
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 13 June 2026.

Sun 23/820:00
SOU
-
YYZ
1 stop22h 20m
Multiple Airlines
Fri 18/921:55
YYZ
-
SOU
1 stop30h 30m
Multiple Airlines
Deal found 12/6£386
Mon 6/717:20
SOU
-
YYZ
1 stop25h 00m
Multiple Airlines
Mon 13/722:55
YYZ
-
SOU
1 stop28h 10m
Multiple Airlines
Deal found 8/6£462
Mon 5/1009:20
SOU
-
JFK
1 stop18h 05m
Aer Lingus
Thu 15/1023:55
JFK
-
SOU
1 stop14h 35m
Aer Lingus
Deal found 12/6£477
Tue 8/909:15
SOU
-
LAX
1 stop17h 10m
British Airways
Tue 29/920:10
LAX
-
SOU
1 stop15h 20m
British Airways
Deal found 9/6£480
Sun 23/809:20
SOU
-
YYZ
1 stop11h 30m
British Airways
Tue 8/917:35
YYZ
-
SOU
1 stop18h 15m
British Airways
Deal found 9/6£480
Wed 9/909:20
SOU
-
LAX
1 stop17h 05m
British Airways
Wed 30/920:10
LAX
-
SOU
1 stop15h 20m
British Airways
Deal found 10/6£482
Fri 11/909:20
SOU
-
YYZ
1 stop11h 30m
British Airways
Fri 2/1017:35
YYZ
-
SOU
1 stop18h 15m
British Airways
Deal found 12/6£482
Thu 10/909:20
SOU
-
LAX
1 stop17h 05m
British Airways
Thu 1/1020:10
LAX
-
SOU
1 stop15h 20m
British Airways
Deal found 11/6£482
Tue 24/1109:20
SOU
-
BOS
1 stop14h 35m
British Airways
Tue 8/1217:50
BOS
-
SOU
1 stop9h 50m
British Airways
Deal found 10/6£485
Sat 19/909:20
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Fri 25/921:05
JFK
-
SOU
1 stop14h 45m
Aer Lingus
Deal found 9/6£485
Sat 19/909:20
SOU
-
EWR
1 stop11h 45m
Aer Lingus
Fri 25/917:35
EWR
-
SOU
1 stop10h 05m
Aer Lingus
Deal found 9/6£485
Sun 11/1020:00
SOU
-
LAX
1 stop30h 25m
British Airways
Tue 20/1020:10
LAX
-
SOU
1 stop15h 20m
British Airways
Deal found 9/6£490

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 13 June 2026.

Round-trip from

£386

One-way from

£309

Popular in

June

Cheapest in

September

Average price

£538
23/8-18/9
  • 23/8-18/9
  • 2 total stops
  • 52h 50m total
  • Portsmouth to North America
Search Deals
4/7
  • 4/7
  • 1 total stop
  • 10h 50m total
  • Portsmouth to North America
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£57 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 June 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 13 June 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

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Fri 11/9

09:20-15:50

1 stop11h 30m

Toronto Pearson Intl

Fri 2/10

17:35-16:50

1 stop18h 15m

£482

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 11/10

20:00-18:25

1 stop30h 25m

Los Angeles Los Angeles

Tue 20/10

20:10-19:30

1 stop15h 20m

£490

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 8/7

17:20-15:50

1 stop27h 30m

Toronto Pearson Intl

Wed 29/7

17:35-08:40

1 stop10h 05m

£491
Fastest return journey

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 29/10

09:20-16:35

1 stop11h 15m

Washington, D.C. Dulles Intl

Thu 5/11

17:05-08:40

1 stop10h 35m

£508

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 8/7

09:20-19:15

1 stop14h 55m

Washington, D.C. Dulles Intl

Fri 24/7

17:15-16:50

1 stop18h 35m

£508

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Thu 9/7

09:20-22:25

1 stop18h 05m

New York John F Kennedy Intl

Wed 22/7

23:55-19:30

1 stop14h 35m

£509

SouthamptonOrlando

SOU - MCO

SOUMCO

Southampton Eastleigh

Wed 8/7

09:20-18:15

1 stop13h 55m

Orlando

Wed 15/7

19:59-16:50

1 stop15h 51m

£510

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Fri 3/7

20:00-14:55

1 stop23h 55m

Boston Logan Intl

Tue 7/7

21:15-19:30

1 stop17h 15m

£510

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 8/9

17:20-15:50

1 stop27h 30m

Toronto Pearson Intl

Tue 29/9

15:13-19:30

2 stops23h 17m

£511

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Tue 3/11

09:20-19:25

1 stop15h 05m

New York John F Kennedy Intl

Sat 7/11

17:00-08:40

1 stop10h 40m

£511

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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 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 13 June 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 at midday tend to be the most expensive. A flight in the morning could potentially save you up to 11% on airfare.

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 13 June 2026.

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

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 8 June 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. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 13 June 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
1,527 reviews
Check prices

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.3

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,527 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.3

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Aer Lingus
7.3
Good
1,603 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.3

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 12h 21m. British Airways provides one of the quickest options available for as low as £535. 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 - Boston Logan 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 (94%), Royal Jordanian (88%) or Fiji Airways (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 £2,182 for a flight from Portsmouth to North America. The cheapest flight overall is £424 while the most popular route, (Southampton Eastleigh - Boston Logan Intl) is currently priced at £496.

  • 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 13 June 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£90Average£568FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£139Average£453FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
DeltaCheapest£148Average£607FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IberiaCheapest£164Average£608FlexibilityNo cancel feeOn-time77%
Search Iberia flights
TAP AIR PORTUGALCheapest£225Average£487FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
SWISSCheapest£246Average£422FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Norse Atlantic UKCheapest£256Average£459FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Scandinavian AirlinesCheapest£300Average£510FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapest£303Average£667FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Hahn AirCheapest£318Average£525FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air 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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