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Cheap flights from Portsmouth to New York LaGuardia Airport from £427

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LGA
25 Dec — 1 Jan1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Portsmouth to LaGuardia

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to LaGuardia
Explore the most affordable flight options available from Portsmouth to LaGuardia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 November 2025.

Sun 21/1218:05SOU - LGA
3 stops30h 37mMultiple Airlines
Sun 28/1206:05LGA - SOU
2 stops28h 30mMultiple Airlines
Deal found 23/11£1,018
Fri 28/1117:30SOU - LGA
3 stops30h 33mMultiple Airlines
Fri 5/1217:35LGA - SOU
3 stops18h 25mMultiple Airlines
Deal found 23/11£1,192
Sun 21/1209:30SOU - LGA
2 stops17h 57mDelta
Sun 28/1211:30LGA - SOU
2 stops15h 40mDelta
Deal found 23/11£1,225
Fri 19/1217:30SOU - LGA
3 stops30h 32mMultiple Airlines
Mon 22/1206:05LGA - SOU
3 stops29h 55mMultiple Airlines
Deal found 24/11£1,261
Mon 1/1209:30SOU - LGA
2 stops16h 56mBritish Airways
Thu 11/1213:25LGA - SOU
2 stops14h 20mBritish Airways
Deal found 23/11£1,479
Fri 19/1208:40SOU - LGA
2 stops19h 00mDelta
Mon 22/1211:30LGA - SOU
2 stops15h 40mDelta
Deal found 24/11£1,510
Fri 28/1108:40SOU - LGA
2 stops15h 45mDelta
Fri 5/1218:00LGA - SOU
2 stops18h 00mDelta
Deal found 23/11£1,601

Cheap flight deals from Portsmouth to LaGuardia

Keep the following information in mind while searching for Portsmouth to LaGuardia flight deals. Data was last updated 25 November 2025.

Round-trip from

£443

One-way from

£427

Popular in

December

Cheapest in

September

Average price

£406
British Airways
  • British Airways
  • 12/1-27/1
  • 4 total stops
  • 36h 39m total
  • Portsmouth to New York
Search Deals
18/4
  • 18/4
  • 3 total stops
  • 31h 30m total
  • Portsmouth to New York
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£20 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 November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to LaGuardia 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 November 2025.
Use the filters below to find and compare flights from Portsmouth to New York LaGuardia Airport that are best for you.

Fly from

Portsmouth

Fly to

LaGuardia

Route

Depart

Return

Price

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Mon 12/1

09:30-21:29

2 stops16h 59m

New York LaGuardia

Tue 27/1

11:15-11:55

2 stops19h 40m

£443

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Thu 5/2

09:30-21:29

2 stops16h 59m

New York LaGuardia

Mon 9/2

17:07-11:55

2 stops37h 48m

£459

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Mon 12/1

09:25-22:55

2 stops18h 30m

New York LaGuardia

Tue 27/1

13:05-08:50

2 stops14h 45m

£543

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Fri 16/1

09:00-21:19

2 stops17h 19m

New York LaGuardia

Fri 23/1

13:05-08:45

2 stops14h 40m

£594

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Thu 5/2

09:00-23:42

2 stops19h 42m

New York LaGuardia

Mon 9/2

16:00-17:00

2 stops20h 00m

£598

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Thu 5/2

09:00-23:42

2 stops19h 42m

New York LaGuardia

Mon 9/2

16:00-17:00

2 stops20h 00m

£598

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Thu 8/1

20:10-19:03

2 stops27h 53m

New York LaGuardia

Thu 15/1

15:30-15:35

2 stops19h 05m

£667

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Thu 8/1

09:30-21:29

2 stops16h 59m

New York LaGuardia

Thu 15/1

13:13-15:35

2 stops21h 22m

£700

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Mon 12/1

16:05-22:45

3 stops35h 40m

New York LaGuardia

Tue 27/1

15:30-11:55

2 stops15h 25m

£711

SouthamptonNew York

SOU - LGA

SOULGA

Southampton Eastleigh

Fri 9/1

09:30-21:29

2 stops16h 59m

New York LaGuardia

Sat 17/1

13:13-08:45

2 stops14h 32m

£743

Flights are sorted by cheapest return flights first.

Deals found on 23/11

Showing 1-10 of 21 results
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Best time to book a flight from Portsmouth to LaGuardia

Have a flexible travel schedule? Discover the best time to fly to LaGuardia 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 New York LaGuardia Airport

What is the cheapest month to book a flight from Portsmouth to New York LaGuardia Airport?

Currently, February is the cheapest month in which you can book a flight from Portsmouth to New York LaGuardia Airport (average of £311). Flying from Portsmouth to New York LaGuardia Airport in August is currently the most expensive (average of £382). 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 LGA?

Find hourly flight availability from Portsmouth to LaGuardia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 November 2025.

A simple way to save on the total cost of your ticket is to fly from Portsmouth to New York LaGuardia Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to LaGuardia. 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 New York LaGuardia Airport?

    For as low as £443, British Airways can have you in New York LaGuardia Airport from Portsmouth in 16h 59m. The distance from Portsmouth to New York LaGuardia Airport is about 3412 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

  • How can I find direct flights from Portsmouth to LaGuardia?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to LaGuardia 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 New York LaGuardia Airport?

    Currently, February is the cheapest month in which you can book a flight from Portsmouth to New York LaGuardia Airport (average of £311). Flying from Portsmouth to New York LaGuardia Airport in August is currently the most expensive (average of £382). 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

Travelling to a place near New York LaGuardia Airport?

Book flights to New York LaGuardia Airport if you plan to visit one of these locations
Queens
Elizabeth
Bronx
Secaucus
Weehawken
Yonkers
Mahwah
Carlstadt
North Bergen
Staten Island
North Wales
Fort Lee
Rutherford
Carteret
Englewood
West New York
Edgewater
Mount Laurel
Westbury

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Alternative routes for Portsmouth to LaGuardia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Portsmouth to LaGuardia

Discover the top 5 airlines that operate flights from Portsmouth to LaGuardia. 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 November 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£312Average£434FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£330Average£417FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£338Average£371FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£355Average£434FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air CanadaCheapest£361Average£504FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 LaGuardia?

When you search for this flight from Portsmouth to LaGuardia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights helps you find that perfect flight to LaGuardia 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 LaGuardia with no change fees?

Certainly. Search results for flights to LaGuardia from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Portsmouth to LaGuardia 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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