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

Air Canada, WestJet, 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 41m on average, while flying from Boston to Toronto Pearson Intl Airport is 1h 50m 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$ 363 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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6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

5:55 p.m. - 4:40 p.m.

YXU

SFO

25h 45m

1 stop

C$ 577WestJet

Sat, 6 Jun - Mon, 29 Jun

7:35 p.m. - 4:45 p.m.

SEA

YXU

18h 10m

1 stop

5:55 p.m. - 6:45 p.m.

YXU

SEA

27h 50m

1 stop

C$ 641WestJet

Mon, 4 May - Wed, 6 May

12:05 p.m. - 9:38 p.m.

TPA

YXU

9h 33m

2 stops

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

YXU

TPA

6h 00m

1 stop

C$ 646Air Canada

Sun, 24 May - Sun, 31 May

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

SFO

YXU

7h 45m

1 stop

5:55 p.m. - 12:00 p.m.

YXU

SFO

21h 05m

1 stop

C$ 646WestJet

Tue, 21 Jul - Mon, 27 Jul

8:05 a.m. - 9:38 p.m.

SFO

YXU

10h 33m

2 stops

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

YXU

SFO

8h 40m

1 stop

C$ 652Air Canada

Sat, 9 May - Wed, 13 May

12:05 p.m. - 9:38 p.m.

TPA

YXU

9h 33m

2 stops

12:20 p.m. - 8:08 p.m.

YXU

TPA

7h 48m

2 stops

C$ 658Air Canada

Sun, 24 May - Sun, 31 May

8:00 a.m. - 9:38 p.m.

SEA

YXU

10h 38m

1 stop

6:10 a.m. - 6:45 p.m.

YXU

SEA

15h 35m

1 stop

C$ 725Multiple Airlines

Thu, 28 May - Thu, 4 Jun

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

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 8:30 p.m.

YXU

SFO

17h 20m

2 stops

C$ 746Multiple Airlines

Sat, 6 Jun - Mon, 29 Jun

6:05 a.m. - 9:38 p.m.

SFO

YXU

12h 33m

2 stops

12:20 p.m. - 6:58 a.m.

YXU

SFO

21h 38m

2 stops

C$ 840United Airlines

Sun, 24 May - Sun, 31 May

4:00 p.m. - 9:38 p.m.

LGA

YXU

5h 38m

1 stop

12:20 p.m. - 6:10 p.m.

YXU

LGA

5h 50m

1 stop

C$ 1,092United Airlines

Wed, 27 May - Wed, 3 Jun

Air Canada flights from United States to London, Ontario

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

Air Canada

24 May

TPA12:05 p.m.Tampa

9h 33m

2 stops

YXU9:38 p.m.London

31 May

YXU5:10 a.m.London

6h 00m

1 stop

TPA11:10 a.m.Tampa

C$ 646

Air Canada

9 May

SFO8:05 a.m.San Francisco

10h 33m

2 stops

YXU9:38 p.m.London

13 May

YXU5:10 a.m.London

8h 40m

1 stop

SFO10:50 a.m.San Francisco

C$ 652

Air Canada

24 May

TPA12:05 p.m.Tampa

9h 33m

2 stops

YXU9:38 p.m.London

31 May

YXU12:20 p.m.London

7h 48m

2 stops

TPA8:08 p.m.Tampa

C$ 658

WestJet flights from United States to London, Ontario

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

WestJet

6 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

29 Jun

YXU5:55 p.m.London

25h 45m

1 stop

SFO4:40 p.m.San Francisco

C$ 577

WestJet

4 May

SEA7:35 p.m.Seattle/Tacoma Intl

18h 10m

1 stop

YXU4:45 p.m.London

6 May

YXU5:55 p.m.London

27h 50m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 641

WestJet

21 Jul

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

27 Jul

YXU5:55 p.m.London

21h 05m

1 stop

SFO12:00 p.m.San Francisco

C$ 646

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

Sat 6/6

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

1 stop8h 15m

London

Mon 29/6

5:55 p.m.-4:40 p.m.

1 stop25h 45m

C$ 577

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 4/5

7:35 p.m.-4:45 p.m.

1 stop18h 10m

London

Wed 6/5

5:55 p.m.-6:45 p.m.

1 stop27h 50m

C$ 641

TampaLondon

TPA - YXU

TPAYXU

Tampa

Sun 24/5

12:05 p.m.-9:38 p.m.

2 stops9h 33m

London

Sun 31/5

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

1 stop6h 00m

C$ 646

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 21/7

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

1 stop7h 45m

London

Mon 27/7

5:55 p.m.-12:00 p.m.

1 stop21h 05m

C$ 646

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 9/5

8:05 a.m.-9:38 p.m.

2 stops10h 33m

London

Wed 13/5

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

1 stop8h 40m

C$ 652

TampaLondon

TPA - YXU

TPAYXU

Tampa

Sun 24/5

12:05 p.m.-9:38 p.m.

2 stops9h 33m

London

Sun 31/5

12:20 p.m.-8:08 p.m.

2 stops7h 48m

C$ 658

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 28/5

8:00 a.m.-9:38 p.m.

1 stop10h 38m

London

Thu 4/6

6:10 a.m.-6:45 p.m.

1 stop15h 35m

C$ 725

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 6/6

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

1 stop8h 15m

London

Mon 29/6

6:10 a.m.-8:30 p.m.

2 stops17h 20m

C$ 746

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 24/5

6:05 a.m.-9:38 p.m.

2 stops12h 33m

London

Sun 31/5

12:20 p.m.-6:58 a.m.

2 stops21h 38m

C$ 840

Quickest round-trip

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Wed 27/5

4:00 p.m.-9:38 p.m.

1 stop5h 38m

London

Wed 3/6

12:20 p.m.-6:10 p.m.

1 stop5h 50m

C$ 1,092

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 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 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 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 737-800 Passenger/BBJ2 (winglets) (100.00% of total bookings).

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.