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

WestJet, Delta, and United Airlines 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 46m on average, while flying from Boston to Toronto Pearson Intl Airport is 1h 48m 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 9 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$ 275 Cheap Flights from the United States to London in 2026

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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11:00 a.m. - 8:44 a.m.

SAN

YXU

18h 44m

2 stops

5:10 a.m. - 11:53 a.m.

YXU

SAN

9h 43m

1 stop

C$ 553Air Canada

Tue, 21 Apr - Tue, 28 Apr

6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 559WestJet

Tue, 9 Jun - Sat, 13 Jun

6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 560WestJet

Wed, 10 Jun - Sat, 13 Jun

6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 565WestJet

Tue, 9 Jun - Sat, 13 Jun

1:00 p.m. - 5:20 a.m.

SFO

YXU

13h 20m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 569WestJet

Sat, 16 May - Sat, 23 May

11:00 a.m. - 8:44 a.m.

SAN

YXU

18h 44m

2 stops

5:10 a.m. - 5:25 p.m.

YXU

SAN

15h 15m

2 stops

C$ 588Air Canada

Tue, 21 Apr - Tue, 28 Apr

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 592WestJet

Fri, 12 Jun - Sat, 13 Jun

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 600WestJet

Thu, 11 Jun - Fri, 12 Jun

6:20 p.m. - 8:44 a.m.

SAN

YXU

11h 24m

2 stops

5:10 a.m. - 12:18 p.m.

YXU

SAN

10h 08m

1 stop

C$ 639United Airlines

Tue, 28 Apr - Sat, 2 May

11:01 a.m. - 8:44 a.m.

SAN

YXU

18h 43m

2 stops

5:10 a.m. - 1:50 p.m.

YXU

SAN

11h 40m

2 stops

C$ 661United Airlines

Tue, 28 Apr - Sat, 2 May

United Airlines flights from United States to London, Ontario

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

United Airlines

31 May

SFO6:34 p.m.San Francisco

17h 24m

2 stops

YXU2:58 p.m.London

4 Jun

YXU9:30 a.m.London

9h 05m

1 stop

SFO3:35 p.m.San Francisco

C$ 636

United Airlines

28 Apr

SAN6:20 p.m.San Diego

11h 24m

2 stops

YXU8:44 a.m.London

2 May

YXU5:10 a.m.London

10h 08m

1 stop

SAN12:18 p.m.San Diego

C$ 639

United Airlines

31 May

SFO6:34 p.m.San Francisco

17h 24m

2 stops

YXU2:58 p.m.London

4 Jun

YXU9:30 a.m.London

12h 54m

2 stops

SFO7:24 p.m.San Francisco

C$ 657

WestJet flights from United States to London, Ontario

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

WestJet

9 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

13 Jun

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 559

WestJet

10 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

13 Jun

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 560

WestJet

9 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

13 Jun

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 565

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 DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 21/4

11:00 a.m.-8:44 a.m.

2 stops18h 44m

London

Tue 28/4

5:10 a.m.-11:53 a.m.

1 stop9h 43m

C$ 553

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 559

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 10/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 560

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 565

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 16/5

1:00 p.m.-5:20 a.m.

1 stop13h 20m

London

Sat 23/5

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 569

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 21/4

11:00 a.m.-8:44 a.m.

2 stops18h 44m

London

Tue 28/4

5:10 a.m.-5:25 p.m.

2 stops15h 15m

C$ 588

Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 12/6

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 592

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 11/6

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Fri 12/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 600

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 28/4

6:20 p.m.-8:44 a.m.

2 stops11h 24m

London

Sat 2/5

5:10 a.m.-12:18 p.m.

1 stop10h 08m

C$ 639

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 28/4

11:01 a.m.-8:44 a.m.

2 stops18h 43m

London

Sat 2/5

5:10 a.m.-1:50 p.m.

2 stops11h 40m

C$ 661

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

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

You could potentially save up to 16% 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	3h 57m
Direct flights	None

The fastest flight from United States to London, Ontario takes 3h 57m

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.