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

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

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 51% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 12 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 April 2026, 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.

$141 Cheap Flights from the United States to London in 2026

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Find the cheapest flights from the United States to London

Round-trip

One-way

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

Enter your travel dates to find the best prices.

6:05 pm - 5:20 am

SFO

YXU

8h 15m

1 stop

2:40 pm - 9:55 pm

YXU

SFO

10h 15m

2 stops

$322WestJet

Fri, Jul 10 - Tue, Jul 14

6:05 pm - 5:20 am

LAX

YXU

8h 15m

1 stop

6:10 am - 4:00 pm

YXU

LAX

12h 50m

2 stops

$343WestJet

Thu, Jul 9 - Thu, Jul 16

6:05 pm - 5:20 am

LAX

YXU

8h 15m

1 stop

6:10 am - 12:25 pm

YXU

LAX

9h 15m

1 stop

$346WestJet

Thu, Jul 9 - Thu, Jul 16

6:00 am - 4:45 pm

SFO

YXU

7h 45m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$346WestJet

Tue, May 12 - Sun, May 17

7:30 pm - 11:45 am

SFO

YXU

13h 15m

2 stops

5:40 am - 12:32 pm

YXU

SFO

9h 52m

1 stop

$378Air Canada

Mon, Aug 31 - Wed, Sep 2

7:30 pm - 8:55 am

SFO

YXU

10h 25m

2 stops

5:40 am - 3:22 pm

YXU

SFO

12h 42m

2 stops

$383Air Canada

Mon, Aug 31 - Wed, Sep 2

7:00 am - 5:20 am

LAX

YXU

19h 20m

2 stops

6:10 am - 2:05 pm

YXU

LAX

10h 55m

1 stop

$441Multiple Airlines

Sat, Jun 6 - Sat, Jun 13

6:05 pm - 5:20 am

SFO

YXU

8h 15m

1 stop

5:55 pm - 8:40 pm

YXU

SFO

29h 45m

2 stops

$457Multiple Airlines

Fri, Jul 10 - Mon, Jul 13

7:41 pm - 2:58 pm

SAN

YXU

16h 17m

3 stops

5:10 am - 12:18 pm

YXU

SAN

10h 08m

1 stop

$579United Airlines

Fri, Jun 5 - Tue, Jun 9

10:43 am - 5:33 pm

ORD

YXU

5h 50m

1 stop

5:10 am - 10:50 am

YXU

ORD

6h 40m

2 stops

$726United Airlines

Mon, May 25 - Thu, May 28

United Airlines flights from United States to London, Ontario

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

United Airlines

Jun 5

SAN7:41 pmSan Diego

16h 17m

3 stops

YXU2:58 pmLondon

Jun 9

YXU5:10 amLondon

10h 08m

1 stop

SAN12:18 pmSan Diego

$579

United Airlines

Jun 5

SAN7:41 pmSan Diego

16h 17m

3 stops

YXU2:58 pmLondon

Jun 9

YXU5:10 amLondon

11h 58m

2 stops

SAN2:08 pmSan Diego

$595

United Airlines

Aug 1

MCO7:09 amOrlando

10h 36m

2 stops

YXU5:45 pmLondon

Aug 31

YXU12:20 pmLondon

7h 30m

2 stops

MCO7:50 pmOrlando

$651

WestJet flights from United States to London, Ontario

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

WestJet

Jul 10

SFO6:05 pmSan Francisco

8h 15m

1 stop

YXU5:20 amLondon

Jul 13

YXU5:55 pmLondon

31h 00m

1 stop

SFO9:55 pmSan Francisco

$322

WestJet

Jul 9

LAX6:05 pmLos Angeles

8h 15m

1 stop

YXU5:20 amLondon

Jul 16

YXU6:10 amLondon

12h 50m

2 stops

LAX4:00 pmLos Angeles

$343

WestJet

Jul 9

LAX6:05 pmLos Angeles

8h 15m

1 stop

YXU5:20 amLondon

Jul 16

YXU6:10 amLondon

9h 15m

1 stop

LAX12:25 pmLos Angeles

$346

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 7/10

6:05 pm-5:20 am

1 stop8h 15m

London

Tue 7/14

2:40 pm-9:55 pm

2 stops10h 15m

$322

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 7/9

6:05 pm-5:20 am

1 stop8h 15m

London

Thu 7/16

6:10 am-4:00 pm

2 stops12h 50m

$343

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 7/9

6:05 pm-5:20 am

1 stop8h 15m

London

Thu 7/16

6:10 am-12:25 pm

1 stop9h 15m

$346

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 5/12

6:00 am-4:45 pm

1 stop7h 45m

London

Sun 5/17

6:10 am-12:00 pm

1 stop8h 50m

$346

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 8/31

7:30 pm-11:45 am

2 stops13h 15m

London

Wed 9/2

5:40 am-12:32 pm

1 stop9h 52m

$378

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 8/31

7:30 pm-8:55 am

2 stops10h 25m

London

Wed 9/2

5:40 am-3:22 pm

2 stops12h 42m

$383

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Sat 6/6

7:00 am-5:20 am

2 stops19h 20m

London

Sat 6/13

6:10 am-2:05 pm

1 stop10h 55m

$441

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 7/10

6:05 pm-5:20 am

1 stop8h 15m

London

Mon 7/13

5:55 pm-8:40 pm

2 stops29h 45m

$457

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 6/5

7:41 pm-2:58 pm

3 stops16h 17m

London

Tue 6/9

5:10 am-12:18 pm

1 stop10h 08m

$579

Quickest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/25

10:43 am-5:33 pm

1 stop5h 50m

London

Thu 5/28

5:10 am-10:50 am

2 stops6h 40m

$726

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 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, Ontario flights?

There is only 1 cabin class available to choose from on United States to London, Ontario 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

Fastest flight time	3h 55m
Direct flights	None

The fastest flight from United States to London, Ontario takes 3h 55m

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

Frequently asked questions about flying from the United States to London, Ontario

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 April 2026, 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 737-800 Passenger/BBJ2 (winglets), making up 100.00% of the total bookings.

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 3,325 reviews		Search WestJet flights
Air Canada	PriceFrom $254	Free Cancellation	Rating 7.1 10,961 reviews		Search Air Canada 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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Cheap flights from the United States to London from $141

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 7/31. 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

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United Airlines flights from United States to London, Ontario

Our best United Airlines 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

What is the cheapest United States to London flight route?

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

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

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

What airlines fly to London, Ontario?

How long does it take to fly 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

Fastest flight time

Direct flights

Frequently asked questions about flying from the 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?

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

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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