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Cheap flights from New York LaGuardia Airport to London from $303

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New York LaGuardia Airport to London departing on 7/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from New York LaGuardia Airport to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
11:35 am - 6:35 am
LGA
-
LHR
14h 00m
1 stop
Air Canada Logo
9:30 am - 4:56 pm
LHR
-
LGA
12h 26m
1 stop
$559Air Canada
Sun, Oct 11 - Sat, Oct 17
Air Canada Logo
4:00 pm - 8:35 am
LGA
-
LHR
11h 35m
1 stop
Air Canada Logo
9:30 am - 2:37 pm
LHR
-
LGA
10h 07m
1 stop
$572Air Canada
Thu, Aug 13 - Sat, Aug 22
Air Canada Logo
3:30 pm - 6:30 am
LGA
-
LHR
10h 00m
1 stop
Air Canada Logo
2:05 pm - 9:30 pm
LHR
-
LGA
12h 25m
1 stop
$591Air Canada
Sun, Jul 26 - Tue, Aug 18
Air Canada Logo
11:35 am - 6:35 am
LGA
-
LHR
14h 00m
1 stop
Air Canada Logo
9:30 am - 4:55 pm
LHR
-
LGA
12h 25m
1 stop
$594Air Canada
Tue, Jul 21 - Tue, Aug 18
Air Canada Logo
4:00 pm - 9:35 am
LGA
-
LHR
12h 35m
1 stop
Air Canada Logo
2:05 pm - 9:30 pm
LHR
-
LGA
12h 25m
1 stop
$616Air Canada
Mon, May 18 - Thu, Jun 4
Air Canada Logo
3:30 pm - 6:30 am
LGA
-
LHR
10h 00m
1 stop
Air Canada Logo
9:30 am - 2:38 pm
LHR
-
LGA
10h 08m
1 stop
$710Air Canada
Sat, May 9 - Fri, May 15
British Airways Logo
8:25 pm - 6:55 pm
LGA
-
LHR
17h 30m
1 stop
British Airways Logo
5:05 pm - 8:55 pm
LHR
-
LGA
32h 50m
1 stop
$714British Airways
Wed, Sep 23 - Mon, Sep 28
Air Canada Logo
3:30 pm - 6:30 am
LGA
-
LHR
10h 00m
1 stop
Air Canada Logo
2:05 pm - 9:30 pm
LHR
-
LGA
12h 25m
1 stop
$715Air Canada
Tue, Jun 23 - Thu, Jul 9
Air Canada Logo
4:45 pm - 9:35 am
LGA
-
LHR
11h 50m
1 stop
Air Canada Logo
9:30 am - 4:57 pm
LHR
-
LGA
12h 27m
1 stop
$719Air Canada
Tue, Jun 23 - Wed, Jul 8
British Airways Logo
4:55 pm - 10:15 am
LGA
-
LHR
12h 20m
1 stop
British Airways Logo
1:10 pm - 8:20 pm
LHR
-
LGA
12h 10m
1 stop
$720British Airways
Wed, Oct 21 - Wed, Nov 11

Air Canada flights from New York LaGuardia Airport to London Heathrow Airport

Our best Air Canada deals on New York LaGuardia Airport to London Heathrow Airport flight tickets
Air Canada
May 3
LGA5:40 pmNew York LaGuardia
11h 20m
1 stop
LHR10:00 amLondon Heathrow
May 8
LHR9:30 amLondon Heathrow
12h 28m
1 stop
LGA4:58 pmNew York LaGuardia
$544
Air Canada
May 1
LGA3:30 pmNew York LaGuardia
10h 00m
1 stop
LHR6:30 amLondon Heathrow
May 6
LHR8:30 amLondon Heathrow
12h 20m
1 stop
LGA3:50 pmNew York LaGuardia
$547
Air Canada
Oct 11
LGA11:35 amNew York LaGuardia
14h 00m
1 stop
LHR6:35 amLondon Heathrow
Oct 17
LHR9:30 amLondon Heathrow
12h 26m
1 stop
LGA4:56 pmNew York LaGuardia
$559

British Airways flights from New York LaGuardia Airport to London Heathrow Airport

Our best British Airways deals on New York LaGuardia Airport to London Heathrow Airport flight tickets
British Airways
Sep 23
LGA8:25 pmNew York LaGuardia
17h 30m
1 stop
LHR6:55 pmLondon Heathrow
Sep 28
LHR5:05 pmLondon Heathrow
32h 50m
1 stop
LGA8:55 pmNew York LaGuardia
$714
British Airways
Oct 21
LGA4:55 pmNew York LaGuardia
12h 20m
1 stop
LHR10:15 amLondon Heathrow
Nov 11
LHR1:10 pmLondon Heathrow
12h 10m
1 stop
LGA8:20 pmNew York LaGuardia
$720
British Airways
Sep 3
LGA5:59 pmNew York LaGuardia
9h 01m
1 stop
LHR8:00 amLondon Heathrow
Sep 10
LHR5:05 pmLondon Heathrow
32h 50m
1 stop
LGA8:55 pmNew York LaGuardia
$721

momondo Fare Finder

 
Customize your flight search to find flights from New York LaGuardia Airport to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated April 25, 2026.
Use the filters below to find and compare flights from New York LaGuardia Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sun 10/11

11:35 am-6:35 am

1 stop14h 00m

London Heathrow

Sat 10/17

9:30 am-4:56 pm

1 stop12h 26m

$559

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 8/13

4:00 pm-8:35 am

1 stop11h 35m

London Heathrow

Sat 8/22

9:30 am-2:37 pm

1 stop10h 07m

$572

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sun 7/26

3:30 pm-6:30 am

1 stop10h 00m

London Heathrow

Tue 8/18

2:05 pm-9:30 pm

1 stop12h 25m

$591

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 7/21

11:35 am-6:35 am

1 stop14h 00m

London Heathrow

Tue 8/18

9:30 am-4:55 pm

1 stop12h 25m

$594

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Mon 5/18

4:00 pm-9:35 am

1 stop12h 35m

London Heathrow

Thu 6/4

2:05 pm-9:30 pm

1 stop12h 25m

$616
Quickest round-trip

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sat 5/9

3:30 pm-6:30 am

1 stop10h 00m

London Heathrow

Fri 5/15

9:30 am-2:38 pm

1 stop10h 08m

$710

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Wed 9/23

8:25 pm-6:55 pm

1 stop17h 30m

London Heathrow

Mon 9/28

5:05 pm-8:55 pm

1 stop32h 50m

$714

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 6/23

3:30 pm-6:30 am

1 stop10h 00m

London Heathrow

Thu 7/9

2:05 pm-9:30 pm

1 stop12h 25m

$715

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 6/23

4:45 pm-9:35 am

1 stop11h 50m

London Heathrow

Wed 7/8

9:30 am-4:57 pm

1 stop12h 27m

$719

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Wed 10/21

4:55 pm-10:15 am

1 stop12h 20m

London Heathrow

Wed 11/11

1:10 pm-8:20 pm

1 stop12h 10m

$720

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from New York LaGuardia Airport to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between New York LaGuardia Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of August is, on average, the cheapest month to fly to London Heathrow Airport from New York LaGuardia Airport, with most prices found around $506. If you’re not able to fly to London Heathrow Airport in August, then November is your next best option. Flight prices from New York LaGuardia Airport to London Heathrow Airport during November average around $529.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $645. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $706.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from New York LaGuardia Airport to London Heathrow Airport in the morning for as low as $621. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $694.

When to book flights from New York LaGuardia Airport to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from New York LaGuardia Airport to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap New York LaGuardia Airport to London Heathrow Airport (LGA to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New York LaGuardia Airport to London Heathrow Airport

Fastest flight time

9h 00m

Direct flights

None
The fastest flight from New York LaGuardia Airport to London Heathrow Airport takes 9h 00m
There are no direct flights from New York LaGuardia Airport to London Heathrow Airport. There are no popular flight routes from New York LaGuardia Airport to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from New York LaGuardia Airport to London Heathrow Airport

  • How far is New York LaGuardia to London Heathrow by plane?

    A flight from New York LaGuardia to London Heathrow will travel around 3438.0 mi. A reasonable flight in good conditions will take 9h 00m.

  • When did momondo last update prices for flights from New York LaGuardia Airport to London Heathrow Airport?

    Prices for flights from New York LaGuardia Airport to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from New York LaGuardia Airport to London Heathrow Airport?

  • How old do you have to be to fly from New York LaGuardia Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from New York LaGuardia Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from New York LaGuardia Airport to London Heathrow Airport?

Best airlines flying from New York LaGuardia Airport to London Heathrow Airport

Compare and see reviews for airlines that fly from New York LaGuardia Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $494Free CancellationRating
7.1
10,969 reviews
Search Air Canada flights
United AirlinesPriceFrom $516Free CancellationRating
7.4
9,655 reviews
Search United Airlines flights
American AirlinesPriceFrom $530Free CancellationRating
7.1
11,677 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Stratford-upon-Avon
Crawley
Slough
Wembley
Stansted
Watford
Croydon
Brentwood
Dartford
Cobham
Folkestone
Guildford
Romford
Harrow

Why use momondo?

Why should I use momondo to find a flight deal from New York to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from New York to London for you.

Can I find flights from New York to London with flexible booking policies on momondo?

Yes. All flights to London from New York on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from New York to London?

momondo helps you find the best flight between New York and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from New York to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for New York to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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