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Cheap flights from New York LaGuardia Airport to London from C$ 317

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 14/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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.
United Airlines Logo
6:00 a.m. - 10:50 a.m.
LGA
-
LHR
24h 50m1 stop
United Airlines Logo
9:30 a.m. - 1:49 p.m.
LHR
-
LGA
33h 19m2 stops
C$ 701United Airlines
Mon, 23 Mar - Mon, 30 Mar
United Airlines Logo
9:15 p.m. - 5:55 a.m.
LGA
-
LHR
27h 40m1 stop
United Airlines Logo
1:25 p.m. - 9:53 a.m.
LHR
-
LGA
25h 28m1 stop
C$ 703United Airlines
Tue, 30 Dec - Fri, 9 Jan
United Airlines Logo
6:00 a.m. - 10:50 a.m.
LGA
-
LHR
23h 50m1 stop
United Airlines Logo
1:25 p.m. - 11:58 a.m.
LHR
-
LGA
27h 33m1 stop
C$ 705United Airlines
Sat, 24 Jan - Sat, 7 Feb
United Airlines Logo
6:00 a.m. - 10:50 a.m.
LGA
-
LHR
23h 50m1 stop
United Airlines Logo
1:00 p.m. - 8:07 a.m.
LHR
-
LGA
24h 07m1 stop
C$ 711United Airlines
Thu, 1 Jan - Sat, 10 Jan
United Airlines Logo
7:29 p.m. - 6:40 a.m.
LGA
-
LHR
30h 11m1 stop
United Airlines Logo
1:25 p.m. - 9:53 a.m.
LHR
-
LGA
25h 28m1 stop
C$ 719United Airlines
Wed, 28 Jan - Sun, 1 Feb
United Airlines Logo
6:00 a.m. - 10:50 a.m.
LGA
-
LHR
23h 50m1 stop
United Airlines Logo
3:00 p.m. - 4:59 p.m.
LHR
-
LGA
30h 59m1 stop
C$ 721United Airlines
Fri, 13 Feb - Fri, 20 Feb
United Airlines Logo
10:28 a.m. - 6:40 a.m.
LGA
-
LHR
15h 12m1 stop
United Airlines Logo
1:25 p.m. - 7:02 p.m.
LHR
-
LGA
10h 37m1 stop
C$ 722United Airlines
Tue, 13 Jan - Tue, 20 Jan
United Airlines Logo
10:25 a.m. - 6:40 a.m.
LGA
-
LHR
15h 15m1 stop
United Airlines Logo
1:25 p.m. - 9:33 p.m.
LHR
-
LGA
12h 08m1 stop
C$ 723United Airlines
Sun, 1 Mar - Fri, 13 Mar
United Airlines Logo
10:28 a.m. - 6:40 a.m.
LGA
-
LHR
15h 12m1 stop
United Airlines Logo
1:25 p.m. - 9:33 p.m.
LHR
-
LGA
13h 08m1 stop
C$ 725United Airlines
Wed, 7 Jan - Wed, 14 Jan
United Airlines Logo
2:55 p.m. - 10:50 a.m.
LGA
-
LHR
14h 55m1 stop
United Airlines Logo
1:25 p.m. - 9:33 p.m.
LHR
-
LGA
13h 08m1 stop
C$ 726United Airlines
Fri, 16 Jan - Sun, 18 Jan

United Airlines flights from New York LaGuardia Airport to London Heathrow Airport

Our best United Airlines deals on New York LaGuardia Airport to London Heathrow Airport flight tickets
United Airlines
23 Mar
LGA6:00 a.m.New York LaGuardia
24h 50m
1 stop
LHR10:50 a.m.London Heathrow
30 Mar
LHR9:30 a.m.London Heathrow
33h 19m
2 stops
LGA1:49 p.m.New York LaGuardia
C$ 701
Find similar
United Airlines
30 Dec
LGA9:15 p.m.New York LaGuardia
27h 40m
1 stop
LHR5:55 a.m.London Heathrow
9 Jan
LHR1:25 p.m.London Heathrow
25h 28m
1 stop
LGA9:53 a.m.New York LaGuardia
C$ 703
Find similar
United Airlines
30 Jan
LGA6:00 a.m.New York LaGuardia
23h 50m
1 stop
LHR10:50 a.m.London Heathrow
6 Feb
LHR1:25 p.m.London Heathrow
32h 32m
1 stop
LGA4:57 p.m.New York LaGuardia
C$ 705
Find similar

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
14 Jan
LGA3:20 p.m.New York LaGuardia
10h 50m
1 stop
LHR7:10 a.m.London Heathrow
21 Jan
LHR1:25 p.m.London Heathrow
14h 08m
2 stops
LGA10:33 p.m.New York LaGuardia
C$ 737
Find similar
Air Canada
7 Jan
LGA6:45 p.m.New York LaGuardia
11h 35m
1 stop
LHR11:20 a.m.London Heathrow
28 Jan
LHR1:25 p.m.London Heathrow
14h 08m
2 stops
LGA10:33 p.m.New York LaGuardia
C$ 741
Find similar

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 96,600 searches. Data last updated 18 December 2025.
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

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Mon 23/3

6:00 a.m.-10:50 a.m.

1 stop24h 50m

London Heathrow

Mon 30/3

9:30 a.m.-1:49 p.m.

2 stops33h 19m

C$ 701

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 30/12

9:15 p.m.-5:55 a.m.

1 stop27h 40m

London Heathrow

Fri 9/1

1:25 p.m.-9:53 a.m.

1 stop25h 28m

C$ 703

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sat 24/1

6:00 a.m.-10:50 a.m.

1 stop23h 50m

London Heathrow

Sat 7/2

1:25 p.m.-11:58 a.m.

1 stop27h 33m

C$ 705

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 1/1

6:00 a.m.-10:50 a.m.

1 stop23h 50m

London Heathrow

Sat 10/1

1:00 p.m.-8:07 a.m.

1 stop24h 07m

C$ 711

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Wed 28/1

7:29 p.m.-6:40 a.m.

1 stop30h 11m

London Heathrow

Sun 1/2

1:25 p.m.-9:53 a.m.

1 stop25h 28m

C$ 719

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Fri 13/2

6:00 a.m.-10:50 a.m.

1 stop23h 50m

London Heathrow

Fri 20/2

3:00 p.m.-4:59 p.m.

1 stop30h 59m

C$ 721

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 13/1

10:28 a.m.-6:40 a.m.

1 stop15h 12m

London Heathrow

Tue 20/1

1:25 p.m.-7:02 p.m.

1 stop10h 37m

C$ 722

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sun 1/3

10:25 a.m.-6:40 a.m.

1 stop15h 15m

London Heathrow

Fri 13/3

1:25 p.m.-9:33 p.m.

1 stop12h 08m

C$ 723

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Wed 7/1

10:28 a.m.-6:40 a.m.

1 stop15h 12m

London Heathrow

Wed 14/1

1:25 p.m.-9:33 p.m.

1 stop13h 08m

C$ 725

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Fri 16/1

2:55 p.m.-10:50 a.m.

1 stop14h 55m

London Heathrow

Sun 18/1

1:25 p.m.-9:33 p.m.

1 stop13h 08m

C$ 726

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 cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from New York LaGuardia Airport, with most prices found around C$ 632. If you aren’t able to travel to London Heathrow Airport during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of C$ 663.

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

According to our data, Thursday is the cheapest day to fly to London Heathrow Airport from New York LaGuardia Airport. The lowest ticket price found for a Thursday departure recently was C$ 914. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from New York LaGuardia Airport to London Heathrow Airport for around C$ 954.

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

Our data shows that the cheapest New York LaGuardia Airport to London Heathrow Airport flights are usually those with departure times in the morning. Our users have found flights to London Heathrow Airport in the morning for as low as C$ 804. In the evening is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 959 per ticket.

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

14h 40m

Direct flights

None
The fastest flight from New York LaGuardia Airport to London Heathrow Airport takes 14h 40m
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

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

    The straight-line distance from New York LaGuardia to London Heathrow is 5532.8 km. 14h 40m is a normal flight duration for this route.

  • 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 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Ipswich
Poole
Dartford
Gatwick
Ilford
Swindon
Chelmsford
Wokingham
Slough
Stratford-upon-Avon
Feltham
Hayes
Uxbridge
Wembley
Waterlooville
Newport
Basingstoke
Milton Keynes
Dover

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from New York to London . Millions of users trust and use momondo every year so you are in good hands.

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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