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?

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 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 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$ 241 Cheap Flights from the United States to London in 2025/26

1 adult

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

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

SEA

YXU

9h 46m2 stops

5:40 p.m. - 10:16 p.m.

YXU

SEA

7h 36m1 stop

C$ 390Air Canada

Thu, 22 Jan - Mon, 26 Jan

5:50 a.m. - 9:21 p.m.

SEA

YXU

12h 31m2 stops

5:10 a.m. - 2:31 p.m.

YXU

SEA

12h 21m2 stops

C$ 398Air Canada

Tue, 27 Jan - Tue, 3 Feb

8:10 a.m. - 9:21 p.m.

SEA

YXU

10h 11m1 stop

5:40 p.m. - 10:16 p.m.

YXU

SEA

7h 36m1 stop

C$ 416Air Canada

Thu, 22 Jan - Mon, 26 Jan

3:10 p.m. - 6:34 a.m.

SEA

YXU

12h 24m1 stop

8:10 p.m. - 10:22 a.m.

YXU

SEA

17h 12m2 stops

C$ 437WestJet

Thu, 8 Jan - Thu, 15 Jan

12:57 p.m. - 5:05 p.m.

SEA

YXU

25h 08m3 stops

5:10 a.m. - 10:43 p.m.

YXU

SEA

20h 33m2 stops

C$ 543United Airlines

Fri, 16 Jan - Fri, 23 Jan

12:57 p.m. - 5:05 p.m.

SEA

YXU

25h 08m3 stops

5:10 a.m. - 10:43 p.m.

YXU

SEA

20h 33m3 stops

C$ 549United Airlines

Fri, 16 Jan - Fri, 23 Jan

5:25 a.m. - 6:34 a.m.

EWR

YXU

25h 09m2 stops

8:10 p.m. - 9:14 p.m.

YXU

EWR

25h 04m3 stops

C$ 651Multiple Airlines

Mon, 26 Jan - Mon, 2 Feb

8:59 a.m. - 6:34 a.m.

LGA

YXU

21h 35m2 stops

8:10 p.m. - 11:50 p.m.

YXU

LGA

27h 40m2 stops

C$ 655Multiple Airlines

Wed, 28 Jan - Wed, 4 Feb

8:25 a.m. - 6:34 a.m.

ATL

YXU

22h 09m2 stops

8:10 p.m. - 6:53 a.m.

YXU

ATL

10h 43m1 stop

C$ 708WestJet

Mon, 26 Jan - Mon, 2 Feb

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$ 976Delta

Fri, 15 May - Sat, 30 May

Air Canada flights from United States to London, Ontario

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

Air Canada

22 Jan

SEA8:00 p.m.Seattle/Tacoma Intl

9h 46m

2 stops

YXU8:46 a.m.London

26 Jan

YXU5:40 p.m.London

7h 36m

1 stop

SEA10:16 p.m.Seattle/Tacoma Intl

C$ 390

Find similar

Air Canada

27 Jan

SEA5:50 a.m.Seattle/Tacoma Intl

12h 31m

2 stops

YXU9:21 p.m.London

3 Feb

YXU5:10 a.m.London

12h 21m

2 stops

SEA2:31 p.m.Seattle/Tacoma Intl

C$ 398

Find similar

Air Canada

22 Jan

SEA8:10 a.m.Seattle/Tacoma Intl

10h 11m

1 stop

YXU9:21 p.m.London

26 Jan

YXU5:40 p.m.London

7h 36m

1 stop

SEA10:16 p.m.Seattle/Tacoma Intl

C$ 416

Find similar

WestJet flights from United States to London, Ontario

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

WestJet

8 Jan

SEA3:10 p.m.Seattle/Tacoma Intl

12h 24m

1 stop

YXU6:34 a.m.London

15 Jan

YXU8:10 p.m.London

17h 12m

2 stops

SEA10:22 a.m.Seattle/Tacoma Intl

C$ 436

Find similar

WestJet

26 Jan

ATL8:25 a.m.Atlanta Hartsfield-Jackson

22h 09m

2 stops

YXU6:34 a.m.London

2 Feb

YXU8:10 p.m.London

10h 43m

1 stop

ATL6:53 a.m.Atlanta Hartsfield-Jackson

C$ 708

Find similar

WestJet

15 Jan

ATL9:05 a.m.Atlanta Hartsfield-Jackson

21h 29m

2 stops

YXU6:34 a.m.London

19 Jan

YXU8:10 p.m.London

10h 42m

1 stop

ATL6:52 a.m.Atlanta Hartsfield-Jackson

C$ 709

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

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 22/1

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

2 stops9h 46m

London

Mon 26/1

5:40 p.m.-10:16 p.m.

1 stop7h 36m

C$ 390

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Tue 27/1

5:50 a.m.-9:21 p.m.

2 stops12h 31m

London

Tue 3/2

5:10 a.m.-2:31 p.m.

2 stops12h 21m

C$ 398

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 22/1

8:10 a.m.-9:21 p.m.

1 stop10h 11m

London

Mon 26/1

5:40 p.m.-10:16 p.m.

1 stop7h 36m

C$ 416

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 8/1

3:10 p.m.-6:34 a.m.

1 stop12h 24m

London

Thu 15/1

8:10 p.m.-10:22 a.m.

2 stops17h 12m

C$ 436

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 16/1

12:57 p.m.-5:05 p.m.

3 stops25h 08m

London

Fri 23/1

5:10 a.m.-10:43 p.m.

2 stops20h 33m

C$ 543

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 16/1

12:57 p.m.-5:05 p.m.

3 stops25h 08m

London

Fri 23/1

5:10 a.m.-10:43 p.m.

3 stops20h 33m

C$ 549

NewarkLondon

EWR - YXU

EWRYXU

Newark

Mon 26/1

5:25 a.m.-6:34 a.m.

2 stops25h 09m

London

Mon 2/2

8:10 p.m.-9:14 p.m.

3 stops25h 04m

C$ 651

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Wed 28/1

8:59 a.m.-6:34 a.m.

2 stops21h 35m

London

Wed 4/2

8:10 p.m.-11:50 p.m.

2 stops27h 40m

C$ 655

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Mon 26/1

8:25 a.m.-6:34 a.m.

2 stops22h 09m

London

Mon 2/2

8:10 p.m.-6:53 a.m.

1 stop10h 43m

C$ 708

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$ 976

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 16m
Direct flights	None

The fastest flight from United States to London, Ontario takes 4h 16m

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.