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Portsmouth

$455+ Cheap flights from LaGuardia, NY (LGA) to Portsmouth, England

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — LHR
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from LaGuardia to Portsmouth

Best flights from LaGuardia to Portsmouth
Discover carefully curated flight deals from LaGuardia to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This Delta deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/1312:00 pmLGA - SOU
2 stops15h 50mDelta
Tue 1/209:25 amSOU - LGA
2 stops15h 51mDelta
Deal found 12/15$686
This Mytrip deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/133:30 pmLGA - SOU
2 stops15h 25mMultiple Airlines
Tue 1/2012:25 pmSOU - LGA
3 stops37h 34mMultiple Airlines
Deal found 12/15$854
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/3011:30 amLGA - SOU
2 stops16h 15mDelta
Fri 2/69:00 amSOU - LGA
2 stops18h 55mDelta
Deal found 12/16$737
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/58:00 amLGA - SOU
2 stops28h 05mDelta
Mon 1/125:35 pmSOU - LGA
2 stops34h 06mDelta
Deal found 12/16$991
This Mytrip deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/3012:40 pmLGA - SOU
2 stops21h 10mMultiple Airlines
Fri 2/69:30 amSOU - LGA
3 stops39h 10mMultiple Airlines
Deal found 12/16$1,094
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/58:00 amLGA - SOU
2 stops28h 05mDelta
Wed 1/149:25 amSOU - LGA
2 stops18h 16mDelta
Deal found 12/16$991
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/58:00 amLGA - SOU
2 stops28h 05mDelta
Thu 1/155:35 pmSOU - LGA
2 stops27h 55mDelta
Deal found 12/16$991
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/58:05 pmLGA - SOU
2 stops31h 45mDelta
Sun 1/115:45 pmSOU - LGA
2 stops31h 31mDelta
Deal found 12/16$1,049
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/45:16 pmLGA - SOU
2 stops42h 49mDelta
Sun 1/115:45 pmSOU - LGA
2 stops31h 31mDelta
Deal found 12/16$1,095
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/58:00 amLGA - SOU
2 stops28h 05mDelta
Fri 1/99:00 amSOU - LGA
2 stops29h 31mDelta
Deal found 12/16$1,181
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/47:30 pmLGA - SOU
2 stops40h 35mDelta
Fri 1/99:00 amSOU - LGA
2 stops17h 42mDelta
Deal found 12/16$1,267

Find flight deals from LaGuardia to Portsmouth

Keep the following information in mind while searching for LaGuardia to Portsmouth flight deals. Data was last updated December 18, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$686
(Delta)

One-way from

$455
(KLM)

Popular in

December

Cheapest in

January

Average price

$731
Provider with most accurate pricing for New York (NYC)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-London (LON) flights.
Search Deals
From New York LaGuardia to Portsmouth
Search Deals
One-way flight from New York LaGuardia to Portsmouth
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from LaGuardia to Portsmouth 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 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from New York LaGuardia Airport to Portsmouth that are best for you.

Fly from

LaGuardia

Fly to

Portsmouth

Route

Depart

Return

Price

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Tue 1/13

12:00 pm-8:50 am

2 stops15h 50m

Southampton Eastleigh

Tue 1/20

9:25 am-8:16 pm

2 stops15h 51m

$686

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Fri 1/30

11:30 am-8:45 am

2 stops16h 15m

Southampton Eastleigh

Fri 2/6

9:00 am-10:55 pm

2 stops18h 55m

$737

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Tue 1/13

3:30 pm-11:55 am

2 stops15h 25m

Southampton Eastleigh

Tue 1/20

12:25 pm-8:59 pm

3 stops37h 34m

$854

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 1/5

8:00 am-5:05 pm

2 stops28h 05m

Southampton Eastleigh

Mon 1/12

5:35 pm-10:41 pm

2 stops34h 06m

$991

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 1/5

8:00 am-5:05 pm

2 stops28h 05m

Southampton Eastleigh

Wed 1/14

9:25 am-10:41 pm

2 stops18h 16m

$991

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 1/5

8:00 am-5:05 pm

2 stops28h 05m

Southampton Eastleigh

Thu 1/15

5:35 pm-4:30 pm

2 stops27h 55m

$991

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 1/5

8:05 pm-8:50 am

2 stops31h 45m

Southampton Eastleigh

Sun 1/11

5:45 pm-8:16 pm

2 stops31h 31m

$1,049

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Fri 1/30

12:40 pm-2:50 pm

2 stops21h 10m

Southampton Eastleigh

Fri 2/6

9:30 am-7:40 pm

3 stops39h 10m

$1,094

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Sun 1/4

5:16 pm-5:05 pm

2 stops42h 49m

Southampton Eastleigh

Sun 1/11

5:45 pm-8:16 pm

2 stops31h 31m

$1,095

New YorkSouthampton

LGA - SOU

LGASOU

New York LaGuardia

Mon 1/5

8:00 am-5:05 pm

2 stops28h 05m

Southampton Eastleigh

Fri 1/9

9:00 am-9:31 am

2 stops29h 31m

$1,181

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 15 results
1
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Best time to book a flight from LaGuardia to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from LaGuardia with our price prediction graph.
Estimated round-trip 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 New York LaGuardia Airport to Portsmouth

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

Currently, November is the cheapest month in which you can book a flight from New York LaGuardia Airport to Portsmouth (average of $392). Flying from New York LaGuardia Airport to Portsmouth in June is currently the most expensive (average of $620). 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 LGA to P0R?

Find hourly flight availability from LaGuardia to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from New York LaGuardia Airport to Portsmouth in the afternoon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight at noon.

Related info for your journey

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

    Delta can get you from New York LaGuardia Airport to Portsmouth in just under 15h 50m. Your travel time can differ by up to . The distance between New York LaGuardia Airport and Portsmouth is about 3412 mi.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from New York LaGuardia Airport to Portsmouth (average of $392). Flying from New York LaGuardia Airport to Portsmouth in June is currently the most expensive (average of $620). 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

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Alternative routes for LaGuardia to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from LaGuardia to Portsmouth

Discover the top 4 airlines that operate flights from LaGuardia to Portsmouth. 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 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$454Average$662FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$514Average$652FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$516Average$649FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$530Average$866FlexibilityNo cancel feeOn-time71%

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