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

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

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

The average flight duration from United States to London, Ontario depends on which airport you fly into and out of. Flying from New York to Toronto Pearson Intl Airport is 1h 45m on average, while flying from Boston to Toronto Pearson Intl Airport is 1h 53m on average. Toronto Pearson Intl Airport is the most popular airport in London, Ontario.

Which airlines fly to London, Ontario?

Air Canada, Porter Airlines and WestJet 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 42% of people opting to fly with this airline when travelling to London, Ontario. Keep in mind that there are 10 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 old do you have to be to fly from United States to London 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 United States to London Airport.

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

The travel and health documents required for your trip to London Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 453 Cheap Flights from the United States to London in 2025/26

1 adult

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Find the cheapest flights from the United States to London

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

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9:00 p.m. - 6:34 a.m.

ATL

YXU

33h 34m2 stops

8:10 p.m. - 6:52 a.m.

YXU

ATL

10h 42m1 stop

C$ 481Multiple Airlines

Mon, 19 Jan - Mon, 26 Jan

1:00 p.m. - 6:34 a.m.

SFO

YXU

14h 34m1 stop

8:10 p.m. - 12:12 p.m.

YXU

SFO

19h 02m1 stop

C$ 497WestJet

Thu, 15 Jan - Mon, 19 Jan

2:24 p.m. - 6:34 a.m.

SFO

YXU

13h 10m2 stops

8:10 p.m. - 12:12 p.m.

YXU

SFO

19h 02m1 stop

C$ 513Multiple Airlines

Wed, 14 Jan - Wed, 21 Jan

11:20 a.m. - 8:46 a.m.

SFO

YXU

18h 26m2 stops

5:40 p.m. - 12:20 p.m.

YXU

SFO

21h 40m2 stops

C$ 515Air Canada

Thu, 15 Jan - Mon, 19 Jan

4:15 p.m. - 6:34 a.m.

ATL

YXU

14h 19m1 stop

8:10 p.m. - 6:52 a.m.

YXU

ATL

10h 42m1 stop

C$ 605WestJet

Mon, 19 Jan - Mon, 26 Jan

12:00 p.m. - 8:46 a.m.

SFO

YXU

17h 46m1 stop

5:10 a.m. - 10:54 a.m.

YXU

SFO

8h 44m1 stop

C$ 624Air Canada

Wed, 14 Jan - Wed, 21 Jan

1:00 p.m. - 6:34 a.m.

SFO

YXU

14h 34m1 stop

8:10 p.m. - 12:12 p.m.

YXU

SFO

19h 02m1 stop

C$ 647WestJet

Thu, 15 Jan - Mon, 19 Jan

8:49 a.m. - 9:20 p.m.

SFO

YXU

9h 31m1 stop

5:40 p.m. - 1:30 a.m.

YXU

SFO

10h 50m2 stops

C$ 717United Airlines

Mon, 19 Jan - Mon, 26 Jan

11:20 p.m. - 9:21 p.m.

SFO

YXU

19h 01m2 stops

9:50 a.m. - 9:37 p.m.

YXU

SFO

14h 47m2 stops

C$ 729United Airlines

Mon, 19 Jan - Mon, 26 Jan

9:05 a.m. - 5:12 a.m.

SJC

YXU

17h 07m2 stops

6:00 a.m. - 5:04 p.m.

YXU

SJC

14h 04m2 stops

C$ 1,007Delta

Fri, 15 May - Sat, 30 May

WestJet flights from United States to London, Ontario

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

WestJet

15 Jan

SFO1:00 p.m.San Francisco

14h 34m

1 stop

YXU6:34 a.m.London

19 Jan

YXU8:10 p.m.London

19h 02m

1 stop

SFO12:12 p.m.San Francisco

C$ 497

Find similar

WestJet

19 Jan

ATL4:15 p.m.Atlanta Hartsfield-Jackson

14h 19m

1 stop

YXU6:34 a.m.London

26 Jan

YXU8:10 p.m.London

10h 42m

1 stop

ATL6:52 a.m.Atlanta Hartsfield-Jackson

C$ 605

Find similar

WestJet

15 Jan

SFO1:00 p.m.San Francisco

14h 34m

1 stop

YXU6:34 a.m.London

19 Jan

YXU8:10 p.m.London

19h 02m

1 stop

SFO12:12 p.m.San Francisco

C$ 646

Find similar

Air Canada flights from United States to London, Ontario

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

Air Canada

15 Jan

SFO11:20 a.m.San Francisco

18h 26m

2 stops

YXU8:46 a.m.London

19 Jan

YXU5:40 p.m.London

21h 40m

2 stops

SFO12:20 p.m.San Francisco

C$ 515

Find similar

Air Canada

14 Jan

SFO12:00 p.m.San Francisco

17h 46m

1 stop

YXU8:46 a.m.London

21 Jan

YXU5:10 a.m.London

8h 44m

1 stop

SFO10:54 a.m.San Francisco

C$ 624

Find similar

Air Canada

15 Jan

SFO11:20 a.m.San Francisco

18h 26m

2 stops

YXU8:46 a.m.London

19 Jan

YXU5:10 a.m.London

8h 44m

1 stop

SFO10:54 a.m.San Francisco

C$ 659

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.

Fly from

Fly to

Route

Depart

Return

Price

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Mon 19/1

9:00 p.m.-6:34 a.m.

2 stops33h 34m

London

Mon 26/1

8:10 p.m.-6:52 a.m.

1 stop10h 42m

C$ 481

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 15/1

1:00 p.m.-6:34 a.m.

1 stop14h 34m

London

Mon 19/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

C$ 497

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 14/1

2:24 p.m.-6:34 a.m.

2 stops13h 10m

London

Wed 21/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

C$ 512

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 15/1

11:20 a.m.-8:46 a.m.

2 stops18h 26m

London

Mon 19/1

5:40 p.m.-12:20 p.m.

2 stops21h 40m

C$ 515

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Mon 19/1

4:15 p.m.-6:34 a.m.

1 stop14h 19m

London

Mon 26/1

8:10 p.m.-6:52 a.m.

1 stop10h 42m

C$ 605

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 14/1

12:00 p.m.-8:46 a.m.

1 stop17h 46m

London

Wed 21/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 624

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 15/1

1:00 p.m.-6:34 a.m.

1 stop14h 34m

London

Mon 19/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

C$ 646

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 19/1

8:49 a.m.-9:20 p.m.

1 stop9h 31m

London

Mon 26/1

5:40 p.m.-1:30 a.m.

2 stops10h 50m

C$ 717

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 19/1

11:20 p.m.-9:21 p.m.

2 stops19h 01m

London

Mon 26/1

9:50 a.m.-9:37 p.m.

2 stops14h 47m

C$ 729

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

9:05 a.m.-5:12 a.m.

2 stops17h 07m

London

Sat 30/5

6:00 a.m.-5:04 p.m.

2 stops14h 04m

C$ 1,007

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 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?

You could potentially save up to 7% on your flight if you consider stops on a United States to London, Ontario flight.

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	4h 04m
Direct flights	None

The fastest flight from United States to London, Ontario takes 4h 04m

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 old do you have to be to fly from United States to London 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 United States to London Airport.
What documentation or ID do you need to fly to London Airport?
The travel and health documents required for your trip to London Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from United States to London, Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from United States to London, Ontario is Boeing 737 MAX 8 (80.00% of total bookings). The next most popular plane model is Boeing 737-800 Passenger/BBJ2 (winglets) (20.00%).

Grand Bend

Port Stanley

Why use momondo?

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

Finding the right flight to London from United States is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for United States to London flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to London from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of United States to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.