What are the cheapest airlines to fly from Portsmouth to USA one-way?

One-way options have recently been found by users for as low as £405 on Aer Lingus. Other airlines that offer cheap prices include Delta from £1,088 and Virgin Atlantic from £1,921 one-way.

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

If weather is an important factor for your trip to USA, 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).

What are the most popular routes from Portsmouth to USA?

Most travelers choose Southampton Eastleigh - New York John F Kennedy Intl, Southampton Eastleigh - Chicago O'Hare Intl or Southampton Eastleigh - Newark when deciding on the best route from Portsmouth to USA.

What are the cheapest flights from Portsmouth to USA?

While on average a flight from Portsmouth to USA is generally £3,445, our data shows the cheapest flight currently is £361. When looking at the most popular route, (Southampton Eastleigh - New York John F Kennedy Intl), you can expect to pay £441 for that flight.

What are the most reliable airlines from Portsmouth to USA?

The top 3 most reliable airlines when flying from Portsmouth to USA are SriLankan Airlines (94%), KLM (89%) and Air France (89%).

What are the most popular airlines that fly from Portsmouth to USA?

Before booking your flight from Portsmouth to USA check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

How far in advance should I book a flight from Portsmouth to USA?

To save up to 28% on this flight, we recommend booking at least 52 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Portsmouth to USA from £389 1-2 weeks out and tickets from £601 for flights departing within the next 72 hours.

What is the cheapest month to fly from Portsmouth to USA?

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, September can be a great choice for travel to USA. Flights to USA from Portsmouth in September are about £400 on average during September, but can be found for as low as £256.

Can I find deals for flights from Portsmouth to USA that include hotel bookings?

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

How can I find direct flights from Portsmouth to USA?

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

Can I find deals for business class flights from Portsmouth to USA?

Yes. Cheapflights offers flight deals from Portsmouth to USA by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£765+ Flights from Portsmouth to the United States

Cheap flight deals from Portsmouth to USA

Round-trip from	£458
One-way from	£297
Popular in	August
Cheapest in	September
Average price	£475

Delta
11/11-25/11
2 total stops
37h 45m total
Portsmouth to USA

Search Deals

30/8
3 total stops
42h 55m total
Portsmouth to USA

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£29 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 July 2025

Search Deals

Find flight deals from Portsmouth to USA

Cheapest flights from Portsmouth to USA
Explore the most affordable flight options available from Portsmouth to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 7월 2025.

월 7/718:25SOU - JFK

1 stop26h 00mVirgin Atlantic

월 21/721:10JFK - SOU

1 stop15h 40mVirgin Atlantic

Deal found 30/6£437

화 11/1117:20SOU - JFK

1 stop23h 15mDelta

화 25/1121:20JFK - SOU

1 stop14h 30mDelta

Deal found 28/6£458

수 13/809:10SOU - JFK

1 stop15h 10mAer Lingus

수 20/816:55JFK - SOU

1 stop10h 45mAer Lingus

Deal found 29/6£526

화 12/809:20SOU - JFK

2 stops33h 05mMultiple Airlines

화 19/816:55JFK - SOU

1 stop10h 10mMultiple Airlines

Deal found 28/6£536

월 11/809:40SOU - EWR

1 stop11h 20mAer Lingus

월 18/817:30EWR - SOU

1 stop10h 10mAer Lingus

Deal found 29/6£550

화 8/718:25SOU - LAX

2 stops29h 40mDelta

수 10/916:50LAX - SOU

1 stop16h 10mDelta

Deal found 30/6£575

목 4/909:20SOU - MCO

2 stops16h 21mDelta

금 12/914:44MCO - SOU

2 stops21h 46mDelta

Deal found 30/6£578

화 12/818:25SOU - JFK

1 stop24h 00mKLM

화 19/817:30JFK - SOU

1 stop19h 20mKLM

Deal found 29/6£579

월 11/809:20SOU - LGA

2 stops15h 26mDelta

월 18/811:00LGA - SOU

2 stops16h 50mDelta

Deal found 29/6£583

월 11/809:40SOU - EWR

1 stop11h 20mMultiple Airlines

월 18/817:30EWR - SOU

2 stops19h 20mMultiple Airlines

Deal found 29/6£590

화 12/809:20SOU - EWR

2 stops16h 40mDelta

화 19/815:35EWR - SOU

2 stops12h 10mDelta

Deal found 29/6£591

월 7/709:20SOU - MIA

2 stops19h 12mDelta

월 14/708:02MIA - SOU

2 stops19h 48mDelta

Deal found 29/6£607

Best flights from Portsmouth to USA
Discover carefully curated flight deals from Portsmouth to USA that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 7월 2025.

화 11/1117:20SOU - JFK

1 stop23h 15mDelta

화 25/1121:20JFK - SOU

1 stop14h 30mDelta

Deal found 28/6£458

수 13/809:10SOU - JFK

1 stop15h 10mAer Lingus

수 20/816:55JFK - SOU

1 stop10h 45mAer Lingus

Deal found 29/6£526

화 12/809:20SOU - JFK

2 stops33h 05mMultiple Airlines

화 19/816:55JFK - SOU

1 stop10h 10mMultiple Airlines

Deal found 28/6£536

화 12/818:25SOU - JFK

1 stop24h 00mKLM

화 19/817:30JFK - SOU

1 stop19h 20mKLM

Deal found 29/6£579

월 11/809:20SOU - EWR

2 stops28h 23mVirgin Atlantic

월 18/808:30EWR - SOU

2 stops19h 20mVirgin Atlantic

Deal found 29/6£607

월 11/809:40SOU - EWR

1 stop11h 20mAer Lingus

월 18/817:30EWR - SOU

1 stop10h 10mAer Lingus

Deal found 29/6£550

목 4/909:20SOU - MCO

2 stops16h 21mDelta

금 12/914:44MCO - SOU

2 stops21h 46mDelta

Deal found 30/6£578

월 11/809:40SOU - EWR

1 stop11h 20mMultiple Airlines

월 18/817:30EWR - SOU

2 stops19h 20mMultiple Airlines

Deal found 29/6£590

수 6/809:20SOU - ORD

1 stop11h 20mKLM

수 13/816:50ORD - SOU

1 stop9h 55mKLM

Deal found 30/6£640

월 11/809:20SOU - LGA

2 stops15h 26mDelta

월 18/811:00LGA - SOU

2 stops16h 50mDelta

Deal found 29/6£583

금 8/818:25SOU - JFK

1 stop24h 00mVirgin Atlantic

금 15/806:00JFK - SOU

2 stops21h 45mVirgin Atlantic

Deal found 28/6£647

화 12/809:20SOU - EWR

2 stops16h 40mDelta

화 19/815:35EWR - SOU

2 stops12h 10mDelta

Deal found 29/6£591

Last-minute flights from Portsmouth to USA
Discover last-minute flight deals from Portsmouth to USA. Data last updated 1 7월 2025 and is based on user searches.

월 30/619:55SOU - LAX

2 stops30h 41mMultiple Airlines

월 7/707:00LAX - SOU

2 stops21h 00mMultiple Airlines

Deal found 29/6£1,090

토 5/709:20SOU - JFK

1 stop11h 05mDelta

토 12/717:30JFK - SOU

1 stop10h 15mDelta

Deal found 28/6£822

토 5/709:20SOU - JFK

1 stop11h 05mKLM

토 12/717:30JFK - SOU

1 stop10h 15mKLM

Deal found 30/6£1,306

일 6/717:35SOU - ORD

1 stop26h 35mDelta

화 5/808:30ORD - SOU

2 stops18h 15mDelta

Deal found 29/6£670

일 6/717:35SOU - ORD

1 stop26h 35mDelta

목 7/807:10ORD - SOU

2 stops19h 35mDelta

Deal found 29/6£670

월 7/718:25SOU - JFK

1 stop26h 00mVirgin Atlantic

월 21/721:10JFK - SOU

1 stop15h 40mVirgin Atlantic

Deal found 30/6£437

월 7/709:20SOU - MIA

2 stops19h 12mDelta

월 14/708:02MIA - SOU

2 stops19h 48mDelta

Deal found 29/6£607

월 7/718:25SOU - JFK

3 stops29h 30mMultiple Airlines

월 21/716:05JFK - SOU

3 stops35h 40mMultiple Airlines

Deal found 30/6£787

월 7/718:25SOU - ATL

1 stop24h 05mDelta

월 14/713:45ATL - SOU

2 stops14h 05mDelta

Deal found 30/6£880

월 7/718:25SOU - MIA

3 stops31h 21mMultiple Airlines

월 14/717:15MIA - SOU

2 stops20h 25mMultiple Airlines

Deal found 29/6£1,105

월 7/709:20SOU - ATL

1 stop16h 05mDelta

월 14/715:30ATL - SOU

1 stop12h 20mDelta

Deal found 30/6£880

화 8/718:25SOU - LAX

2 stops29h 40mDelta

수 10/916:50LAX - SOU

1 stop16h 10mDelta

Deal found 30/6£575

One-way flights from Portsmouth to USA
Search for one-way flight options from Portsmouth to USA. Find affordable one-way fares based on user searches. Data last updated 1 7월 2025.

토 30/808:05SOU - JFK

3 stops42h 55mMultiple Airlines

Deal found 29/6£297

토 30/809:40SOU - JFK

1 stop14h 40mAer Lingus

Deal found 29/6£405

토 30/809:40SOU - EWR

1 stop11h 20mAer Lingus

Deal found 29/6£405

토 30/808:25SOU - EWR

3 stops39h 45mMultiple Airlines

Deal found 29/6£440

금 15/816:15SOU - ATL

2 stops26h 12mMultiple Airlines

Deal found 30/6£454

토 30/808:25SOU - LGA

2 stops41h 40mMultiple Airlines

Deal found 29/6£493

일 27/720:00SOU - LAX

2 stops44h 54mAer Lingus

Deal found 29/6£891

일 17/817:35SOU - JFK

1 stop26h 50mDelta

Deal found 28/6£1,088

화 16/909:20SOU - LAX

1 stop34h 30mDelta

Deal found 1/7£1,121

월 20/1009:20SOU - LGA

2 stops17h 07mDelta

Deal found 30/6£1,125

월 20/1009:20SOU - EWR

2 stops18h 43mDelta

Deal found 30/6£1,129

일 10/817:35SOU - MIA

2 stops30h 54mDelta

Deal found 30/6£1,218

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

화 11/11

17:20-11:35

1 stop23h 15m

New York John F Kennedy Intl

화 25/11

21:20-16:50

1 stop14h 30m

£458

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

수 13/8

09:10-19:20

1 stop15h 10m

New York John F Kennedy Intl

수 20/8

16:55-08:40

1 stop10h 45m

£526

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

화 12/8

09:20-13:25

2 stops33h 05m

New York John F Kennedy Intl

화 19/8

16:55-08:05

1 stop10h 10m

£536

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

월 11/8

09:40-16:00

1 stop11h 20m

Newark

월 18/8

17:30-08:40

1 stop10h 10m

£550

SouthamptonOrlando

SOU - MCO

SOUMCO

Southampton Eastleigh

목 4/9

09:20-20:41

2 stops16h 21m

Orlando

금 12/9

14:44-17:30

2 stops21h 46m

£578

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

화 12/8

18:25-13:25

1 stop24h 00m

New York John F Kennedy Intl

월 18/8

00:50-17:50

1 stop12h 00m

£579

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

월 11/8

09:20-19:46

2 stops15h 26m

New York LaGuardia

월 18/8

11:00-08:50

2 stops16h 50m

£583

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

월 11/8

09:40-16:00

1 stop11h 20m

Newark

월 18/8

17:30-17:50

2 stops19h 20m

£590

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

화 12/8

09:20-21:00

2 stops16h 40m

Newark

화 19/8

15:35-08:45

2 stops12h 10m

£591

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

월 11/8

09:20-08:43

2 stops28h 23m

Newark

월 18/8

08:30-08:50

2 stops19h 20m

£607

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 49 results

...

Best time to book a flight from Portsmouth to USA

Have a flexible travel schedule? Discover the best time to fly to USA 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 the United States

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

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

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

Weekly flight availability from Portsmouth to USA

The most flights from P0R to US0 are scheduled on a Monday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (45 on average).

Reviews of airlines servicing USA

Get a feel of what it's like to fly with Delta, KLM, andVirgin Atlantic from Portsmouth to the United States by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,973 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

654 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Aer Lingus

7.1

Good

1,140 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines to fly from Portsmouth to USA one-way?
One-way options have recently been found by users for as low as £405 on Aer Lingus. Other airlines that offer cheap prices include Delta from £1,088 and Virgin Atlantic from £1,921 one-way.
What are the most popular routes from Portsmouth to USA?
Most travelers choose Southampton Eastleigh - New York John F Kennedy Intl, Southampton Eastleigh - Chicago O'Hare Intl or Southampton Eastleigh - Newark when deciding on the best route from Portsmouth to USA.
What are the most reliable airlines from Portsmouth to USA?
The top 3 most reliable airlines when flying from Portsmouth to USA are SriLankan Airlines (94%), KLM (89%) and Air France (89%).
What are the cheapest flights from Portsmouth to USA?
While on average a flight from Portsmouth to USA is generally £3,445, our data shows the cheapest flight currently is £361. When looking at the most popular route, (Southampton Eastleigh - New York John F Kennedy Intl), you can expect to pay £441 for that flight.
Can I find deals for flights from Portsmouth to USA that include hotel bookings?
Yes. In addition to deals on Portsmouth to USA flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to USA?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to USA.
Can I find deals for business class flights from Portsmouth to USA?
Yes. Cheapflights offers flight deals from Portsmouth to USA 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 USA?
Currently, January is the cheapest month in which you can book a flight from Portsmouth to USA (average of £575). Flying from Portsmouth to USA 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Portsmouth to USA

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£7	Average£532	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Delta	Cheapest£233	Average£595	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
PLAY	Cheapest£257	Average£373	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
SWISS	Cheapest£271	Average£437	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
TAP AIR PORTUGAL	Cheapest£276	Average£458	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Icelandair	Cheapest£285	Average£521	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
United Airlines	Cheapest£288	Average£530	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Scandinavian Airlines	Cheapest£302	Average£530	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
American Airlines	Cheapest£302	Average£592	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest£303	Average£509	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portsmouth to USA?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portsmouth to USA. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to USA from Portsmouth.

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

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

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Cheap flights from Portsmouth to the United States from £297

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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to USA

Keep the following information in mind while searching for Portsmouth to USA flight deals. Data was last updated 1 7월 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to USA

Cheapest flights from Portsmouth to USAExplore the most affordable flight options available from Portsmouth to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 7월 2025.

Explore the most affordable flight options available from Portsmouth to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 7월 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to the United States that are best for you.

Best time to book a flight from Portsmouth to USA

Have a flexible travel schedule? Discover the best time to fly to USA from Portsmouth with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to the United States

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

What is the cheapest time of day to fly from P0R to US?

Find hourly flight availability from Portsmouth to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 7월 2025.

Weekly flight availability from Portsmouth to USA

Explore weekly flight availability from Portsmouth to USA. 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 1 7월 2025.

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated 1 7월 2025.

Get a feel of what it's like to fly with Delta, KLM, andVirgin Atlantic from Portsmouth to the United States by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to USA. 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 USA one-way?

What are the most popular routes from Portsmouth to USA?

What are the most reliable airlines from Portsmouth to USA?

What are the cheapest flights from Portsmouth to USA?

Can I find deals for flights from Portsmouth to USA that include hotel bookings?

How can I find direct flights from Portsmouth to USA?

Can I find deals for business class flights from Portsmouth to USA?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to USA

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to USA

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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 USA?

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

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

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

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Cheapest flights from Portsmouth to USA
Explore the most affordable flight options available from Portsmouth to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 7월 2025.