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 41% 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.

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

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

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$ 309 Cheap Flights from the United States to London, Ontario 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

Enter your travel dates to find the best prices.

7:35 p.m. - 5:20 a.m.

SEA

YXU

6h 45m

1 stop

8:00 p.m. - 2:20 p.m.

YXU

SEA

21h 20m

1 stop

C$ 614WestJet

Mon, 12 Oct - Mon, 26 Oct

3:30 p.m. - 5:20 a.m.

SAN

YXU

10h 50m

1 stop

6:10 a.m. - 2:10 p.m.

YXU

SAN

11h 00m

1 stop

C$ 629WestJet

Fri, 9 Oct - Mon, 12 Oct

5:40 a.m. - 9:40 p.m.

SEA

YXU

13h 00m

2 stops

3:30 p.m. - 9:04 p.m.

YXU

SEA

8h 34m

1 stop

C$ 652Air Canada

Tue, 22 Sep - Wed, 7 Oct

3:30 p.m. - 5:20 a.m.

SAN

YXU

10h 50m

1 stop

6:10 a.m. - 2:10 p.m.

YXU

SAN

11h 00m

1 stop

C$ 662WestJet

Thu, 8 Oct - Tue, 13 Oct

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

SEA

YXU

18h 10m

1 stop

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

YXU

SEA

15h 35m

1 stop

C$ 668WestJet

Wed, 23 Sep - Wed, 7 Oct

8:00 a.m. - 9:40 p.m.

SEA

YXU

10h 40m

1 stop

3:30 p.m. - 9:04 p.m.

YXU

SEA

8h 34m

1 stop

C$ 695Air Canada

Tue, 22 Sep - Wed, 7 Oct

3:30 p.m. - 5:20 a.m.

SAN

YXU

10h 50m

1 stop

6:10 a.m. - 7:37 p.m.

YXU

SAN

16h 27m

2 stops

C$ 702Multiple Airlines

Thu, 8 Oct - Tue, 13 Oct

3:30 p.m. - 5:20 a.m.

SAN

YXU

10h 50m

1 stop

6:10 a.m. - 4:52 p.m.

YXU

SAN

13h 42m

2 stops

C$ 879Multiple Airlines

Fri, 9 Oct - Tue, 13 Oct

10:40 p.m. - 9:40 p.m.

SAN

YXU

20h 00m

2 stops

3:30 p.m. - 9:05 a.m.

YXU

SAN

20h 35m

2 stops

C$ 952United Airlines

Fri, 9 Oct - Mon, 12 Oct

6:15 a.m. - 2:55 p.m.

IAD

YXU

8h 40m

2 stops

10:05 a.m. - 3:25 p.m.

YXU

IAD

5h 20m

1 stop

C$ 1,068United Airlines

Fri, 18 Sep - Sun, 20 Sep

WestJet flights from United States to London, Ontario

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

WestJet

12 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 a.m.London

26 Oct

YXU8:00 p.m.London

21h 20m

1 stop

SEA2:20 p.m.Seattle/Tacoma Intl

C$ 614

WestJet

9 Oct

SAN3:30 p.m.San Diego

10h 50m

1 stop

YXU5:20 a.m.London

12 Oct

YXU6:10 a.m.London

11h 00m

1 stop

SAN2:10 p.m.San Diego

C$ 629

WestJet

8 Oct

SAN3:30 p.m.San Diego

10h 50m

1 stop

YXU5:20 a.m.London

13 Oct

YXU6:10 a.m.London

11h 00m

1 stop

SAN2:10 p.m.San Diego

C$ 662

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 Sep

SEA5:40 a.m.Seattle/Tacoma Intl

13h 00m

2 stops

YXU9:40 p.m.London

7 Oct

YXU3:30 p.m.London

8h 34m

1 stop

SEA9:04 p.m.Seattle/Tacoma Intl

C$ 652

Air Canada

22 Sep

SEA8:00 a.m.Seattle/Tacoma Intl

10h 40m

1 stop

YXU9:40 p.m.London

7 Oct

YXU3:30 p.m.London

8h 34m

1 stop

SEA9:04 p.m.Seattle/Tacoma Intl

C$ 695

Air Canada

24 Jun

ORD3:45 p.m.Chicago O'Hare Intl

4h 52m

1 stop

YXU9:37 p.m.London

1 Jul

YXU10:05 a.m.London

4h 17m

1 stop

ORD1:22 p.m.Chicago O'Hare Intl

C$ 755

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

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 12/10

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Mon 26/10

8:00 p.m.-2:20 p.m.

1 stop21h 20m

C$ 614

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 9/10

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Mon 12/10

6:10 a.m.-2:10 p.m.

1 stop11h 00m

C$ 629

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Tue 22/9

5:40 a.m.-9:40 p.m.

2 stops13h 00m

London

Wed 7/10

3:30 p.m.-9:04 p.m.

1 stop8h 34m

C$ 652

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 8/10

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Tue 13/10

6:10 a.m.-2:10 p.m.

1 stop11h 00m

C$ 662

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 23/9

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

1 stop18h 10m

London

Wed 7/10

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

1 stop15h 35m

C$ 668

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Tue 22/9

8:00 a.m.-9:40 p.m.

1 stop10h 40m

London

Wed 7/10

3:30 p.m.-9:04 p.m.

1 stop8h 34m

C$ 695

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 8/10

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Tue 13/10

6:10 a.m.-7:37 p.m.

2 stops16h 27m

C$ 702

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 9/10

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Tue 13/10

6:10 a.m.-4:52 p.m.

2 stops13h 42m

C$ 879

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 9/10

10:40 p.m.-9:40 p.m.

2 stops20h 00m

London

Mon 12/10

3:30 p.m.-9:05 a.m.

2 stops20h 35m

C$ 952

Quickest round-trip

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 18/9

6:15 a.m.-2:55 p.m.

2 stops8h 40m

London

Sun 20/9

10:05 a.m.-3:25 p.m.

1 stop5h 20m

C$ 1,068

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 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.

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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.

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.