What is the cheapest airline that flies from United States to London?

WestJet, Air Canada, and United Airlines are the most popular carriers operating from United States to London

How long does it take to fly to London, Ontario?

If you’re flying from a popular airport in United States, such as New York or Boston, and flying into London, Ontario, then you can expect flight times to average 1h 45m and 1h 53m, respectively.

What airlines fly to London, Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to London, Ontario from United States according to our data. Air Canada is the first choice among our users, with 50% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 11 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from United States to London Airport?

Prices for flights from United States to London Airport were last updated today.

How many operators does momondo search for flights from United States to London Airport?

As of November 2025, there are 2 operators available to choose from for flights from United States to London Airport.

How old do you have to be to fly from United States to London Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to London Airport.

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

The travel and health documents you'll need for your trip to London 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 Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$124 Cheap Flights from the United States to London in 2025/26

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Recent round-trip flight deals from the United States to London

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11:50 am - 6:35 amLAX-YXU

15h 45m2 stops

8:10 pm - 11:00 amYXU-LAX

17h 50m2 stops

$327WestJet

Find Deal

Thu, Mar 5 - Mon, Mar 9

11:50 am - 6:35 amLAX-YXU

15h 45m2 stops

8:10 pm - 11:27 amYXU-LAX

18h 17m1 stop

$328WestJet

Find Deal

Thu, Mar 5 - Mon, Mar 9

11:50 am - 6:35 amLAX-YXU

15h 45m2 stops

8:10 pm - 11:27 amYXU-LAX

18h 17m1 stop

$333WestJet

Find Deal

Thu, Mar 5 - Mon, Mar 9

11:50 am - 6:35 amLAX-YXU

15h 45m2 stops

8:10 pm - 11:00 amYXU-LAX

17h 50m2 stops

$339WestJet

Find Deal

Thu, Mar 5 - Mon, Mar 9

11:30 am - 9:21 pmLAX-YXU

6h 51m1 stop

9:25 am - 3:17 pmYXU-LAX

8h 52m1 stop

$406Air Canada

Find Deal

Thu, Feb 19 - Mon, Feb 23

11:30 am - 9:21 pmLAX-YXU

6h 51m1 stop

5:10 am - 10:32 amYXU-LAX

8h 22m1 stop

$407Air Canada

Find Deal

Thu, Feb 19 - Mon, Feb 23

12:25 am - 5:05 pmLAX-YXU

13h 40m2 stops

5:10 am - 10:32 amYXU-LAX

8h 22m1 stop

$491United Airlines

Find Deal

Wed, Feb 18 - Mon, Feb 23

12:25 am - 5:05 pmLAX-YXU

13h 40m2 stops

9:25 am - 6:45 pmYXU-LAX

12h 20m2 stops

$506United Airlines

Find Deal

Wed, Mar 4 - Mon, Mar 9

1:52 pm - 6:34 amORD-YXU

15h 42m2 stops

8:10 pm - 1:35 pmYXU-ORD

18h 25m1 stop

$609Multiple Airlines

Find Deal

Thu, Dec 11 - Sun, Dec 14

8:16 am - 3:35 pmIAH-YXU

30h 19m1 stop

8:10 pm - 5:29 pmYXU-IAH

22h 19m1 stop

$649Multiple Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

Air Canada flights from United States to London, Ontario

Our best Air Canada deals on United States to London, Ontario flight tickets

Air Canada

Feb 19

LAX11:30 amLos Angeles

6h 51m

1 stop

YXU9:21 pmLondon

Feb 23

YXU9:25 amLondon

8h 52m

1 stop

LAX3:17 pmLos Angeles

$406

Find similar

Air Canada

Feb 19

LAX11:30 amLos Angeles

6h 51m

1 stop

YXU9:21 pmLondon

Feb 23

YXU5:10 amLondon

8h 22m

1 stop

LAX10:32 amLos Angeles

$407

Find similar

Air Canada

Feb 19

LAX6:10 pmLos Angeles

11h 36m

2 stops

YXU8:46 amLondon

Feb 23

YXU5:10 amLondon

8h 22m

1 stop

LAX10:32 amLos Angeles

$411

Find similar

WestJet flights from United States to London, Ontario

Our best WestJet deals on United States to London, Ontario flight tickets

WestJet

Mar 5

LAX11:50 amLos Angeles

15h 45m

2 stops

YXU6:35 amLondon

Mar 9

YXU8:10 pmLondon

17h 50m

2 stops

LAX11:00 amLos Angeles

$327

Find similar

WestJet

Mar 5

LAX11:50 amLos Angeles

15h 45m

2 stops

YXU6:35 amLondon

Mar 9

YXU8:10 pmLondon

18h 17m

1 stop

LAX11:27 amLos Angeles

$328

Find similar

WestJet

Mar 5

LAX11:50 amLos Angeles

15h 45m

2 stops

YXU6:35 amLondon

Mar 9

YXU8:10 pmLondon

18h 17m

1 stop

LAX11:27 amLos Angeles

$333

Find similar

momondo Fare Finder

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

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Fly to

Route

Depart

Return

Price

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 3/5

11:50 am-6:35 am

2 stops15h 45m

London

Mon 3/9

8:10 pm-11:00 am

2 stops17h 50m

$327

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 3/5

11:50 am-6:35 am

2 stops15h 45m

London

Mon 3/9

8:10 pm-11:27 am

1 stop18h 17m

$328

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 3/5

11:50 am-6:35 am

2 stops15h 45m

London

Mon 3/9

8:10 pm-11:27 am

1 stop18h 17m

$333

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 3/5

11:50 am-6:35 am

2 stops15h 45m

London

Mon 3/9

8:10 pm-11:00 am

2 stops17h 50m

$339

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 2/19

11:30 am-9:21 pm

1 stop6h 51m

London

Mon 2/23

9:25 am-3:17 pm

1 stop8h 52m

$406

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 2/19

11:30 am-9:21 pm

1 stop6h 51m

London

Mon 2/23

5:10 am-10:32 am

1 stop8h 22m

$407

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 2/18

12:25 am-5:05 pm

2 stops13h 40m

London

Mon 2/23

5:10 am-10:32 am

1 stop8h 22m

$491

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 3/4

12:25 am-5:05 pm

2 stops13h 40m

London

Mon 3/9

9:25 am-6:45 pm

2 stops12h 20m

$506

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 12/11

1:52 pm-6:34 am

2 stops15h 42m

London

Sun 12/14

8:10 pm-1:35 pm

1 stop18h 25m

$609

HoustonLondon

IAH - YXU

IAHYXU

Houston George Bush Intcntl

Fri 12/5

8:16 am-3:35 pm

1 stop30h 19m

London

Mon 12/8

8:10 pm-5:29 pm

1 stop22h 19m

$649

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United States to London, Ontario

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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to London, Ontario?

According to our data, Wednesday is the cheapest day to fly to London, Ontario from United States. The lowest ticket price found for a Wednesday departure recently was $199. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Friday is $549.

What is the cheapest time of day to depart on your flight to London, Ontario?

In the afternoon is the cheapest time of day to fly from United States to London, Ontario when you can find flight prices for as low as $284. Flying to London, Ontario in the afternoon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $514 per ticket.

What is the cheapest United States to London flight route?

Fly from Orlando to London for the best United States - London flight prices

What cabin class options are available on United States to London flights?

There is only 1 cabin class available to choose from on United States to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to London, Ontario flights?

No. A direct flight is the cheapest option for a flight between United States to London, Ontario.

Cheap United States to London, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to London, Ontario

Direct flights	None

There are no direct flights from United States to London, Ontario. There are no popular flight routes from United States to London, Ontario.

Search flight deals

When did momondo last update prices for flights from United States to London Airport?
Prices for flights from United States to London Airport were last updated today.
How many operators does momondo search for flights from United States to London Airport?
As of November 2025, there are 2 operators available to choose from for flights from United States to London Airport.
How old do you have to be to fly from United States to London Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to London Airport.
What documentation or ID do you need to fly to London Airport?
The travel and health documents you'll need for your trip to London 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 Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United States to London, Ontario?
Based on momondo bookings for flights between United States and London, Ontario, the leading plane model is Boeing 737 MAX 8, making up 80.00% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 20.00%.

Best airlines flying from United States to London, Ontario

Compare and see reviews for airlines that fly from United States to London, Ontario with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $162	Free Cancellation	Rating 7.2 3,156 reviews	Search WestJet flights
Air Canada	PriceFrom $178	Free Cancellation	Rating 7.1 10,421 reviews	Search Air Canada flights
United Airlines	PriceFrom $183	Free Cancellation	Rating 7.4 9,009 reviews	Search United Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from United States to London?

It is quick and easy to find United States to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from United States to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from United States with this policy.

How can momondo help me find flights from United States to London?

momondo helps you find the best flight between United States 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 United States to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from United States and alert you when they change.

An easier way to manage your London, Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Canada

Airports servicing Ontario

Popular cities in Canada

Flights to Torontofrom $103

Flights to Vancouverfrom $77

Flights to Montrealfrom $156

Flights to Calgaryfrom $168

Flights to Ottawafrom $184

Flights to Halifaxfrom $207

Flights to Winnipegfrom $151

Flights to Québec Cityfrom $200

Flights to Saskatoonfrom $125

Flights to Kelownafrom $140

Flights to St. John'sfrom $305

Flights to Reginafrom $223

Cheap flights from the United States to London from $124

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to London departing on 1/19. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from the United States to London

Recent round-trip flight deals from the United States to London

Recent one-way flight deals from the United States to London

Recent last minute flight deals from the United States to London

Air Canada flights from United States to London, Ontario

Our best Air Canada deals on United States to London, Ontario flight tickets

WestJet flights from United States to London, Ontario

Our best WestJet deals on United States to London, Ontario flight tickets

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from United States to London, Ontario

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 day to depart on your flight to London, Ontario?

What is the cheapest time of day to depart on your flight to London, Ontario?

What is the cheapest United States to London flight route?

Fly from Orlando to London for the best United States - London flight prices

What cabin class options are available on United States to London flights?

There is only 1 cabin class available to choose from on United States to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to London, Ontario flights?

No. A direct flight is the cheapest option for a flight between United States to London, Ontario.

What is the cheapest airline that flies from United States to London?

WestJet, Air Canada, and United Airlines are the most popular carriers operating from United States to London

What airlines fly to London, Ontario?

How long does it take to fly to London, Ontario?

If you’re flying from a popular airport in United States, such as New York or Boston, and flying into London, Ontario, then you can expect flight times to average 1h 45m and 1h 53m, respectively.

Cheap United States to London, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to London, Ontario

Direct flights

When did momondo last update prices for flights from United States to London Airport?

How many operators does momondo search for flights from United States to London Airport?

How old do you have to be to fly from United States to London Airport?

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

What is the most popular plane model from United States to London, Ontario?

Best airlines flying from United States to London, Ontario

Compare and see reviews for airlines that fly from United States to London, Ontario with momondo

Traveling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from United States to London?

Can I find flights from United States to London with flexible booking policies on momondo?

How can momondo help me find flights from United States to London?

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

An easier way to manage your London, Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Canada

Airports servicing Ontario