Cheap flights from the United States to London from C$ 173

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to London departing on 18/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United States to London

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

WestJet Logo
5:30 p.m. - 5:12 a.m.ORD-YXU
10h 42m1 stop
WestJet Logo
8:00 p.m. - 4:43 p.m.YXU-ORD
21h 43m1 stop
C$ 470WestJet
Find Deal
Thu, 9 Oct - Wed, 15 Oct
Multiple Airlines Logo
1:00 p.m. - 7:12 p.m.SFO-YXU
27h 12m1 stop
Multiple Airlines Logo
8:10 p.m. - 9:30 a.m.YXU-SFO
40h 20m2 stops
C$ 526Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Multiple Airlines Logo
5:30 p.m. - 5:12 a.m.ORD-YXU
10h 42m1 stop
Multiple Airlines Logo
6:00 a.m. - 12:31 p.m.YXU-ORD
31h 31m2 stops
C$ 539Multiple Airlines
Find Deal
Thu, 9 Oct - Wed, 15 Oct
Air Canada Logo
4:15 p.m. - 9:21 p.m.MCO-YXU
5h 06m1 stop
Air Canada Logo
5:45 a.m. - 11:15 a.m.YXU-MCO
5h 30m1 stop
C$ 550Air Canada
Find Deal
Fri, 12 Dec - Tue, 16 Dec
Air Canada Logo
7:30 a.m. - 9:21 p.m.SFO-YXU
10h 51m2 stops
Air Canada Logo
5:45 a.m. - 10:54 a.m.YXU-SFO
8h 09m1 stop
C$ 553Air Canada
Find Deal
Thu, 19 Feb - Fri, 20 Feb
WestJet Logo
5:35 p.m. - 7:12 p.m.JFK-YXU
25h 37m1 stop
WestJet Logo
8:00 p.m. - 4:37 p.m.YXU-JFK
20h 37m1 stop
C$ 554WestJet
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Air Canada Logo
8:30 a.m. - 5:05 p.m.MCO-YXU
8h 35m2 stops
Air Canada Logo
5:40 p.m. - 11:30 p.m.YXU-MCO
5h 50m1 stop
C$ 557Air Canada
Find Deal
Fri, 12 Dec - Tue, 16 Dec
Air Canada Logo
7:30 a.m. - 9:21 p.m.SFO-YXU
10h 51m2 stops
Air Canada Logo
9:25 a.m. - 9:22 p.m.YXU-SFO
14h 57m2 stops
C$ 559Air Canada
Find Deal
Thu, 19 Feb - Fri, 20 Feb
United Airlines Logo
11:08 a.m. - 9:19 a.m.SAN-YXU
19h 11m2 stops
United Airlines Logo
3:40 p.m. - 12:15 a.m.YXU-SAN
11h 35m2 stops
C$ 670United Airlines
Find Deal
Mon, 29 Sep - Sat, 4 Oct
United Airlines Logo
8:55 p.m. - 5:06 p.m.SFO-YXU
17h 11m2 stops
United Airlines Logo
5:40 p.m. - 1:15 a.m.YXU-SFO
10h 35m2 stops
C$ 682United Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov

WestJet flights from United States to London, Ontario

Our best WestJet deals on United States to London, Ontario flight tickets
WestJet
9 Oct
ORD5:30 p.m.Chicago O'Hare Intl
10h 42m
1 stop
YXU5:12 a.m.London
15 Oct
YXU8:00 p.m.London
21h 43m
1 stop
ORD4:43 p.m.Chicago O'Hare Intl
WestJet
29 Oct
JFK5:35 p.m.New York John F Kennedy Intl
25h 37m
1 stop
YXU7:12 p.m.London
5 Nov
YXU8:00 p.m.London
20h 37m
1 stop
JFK4:37 p.m.New York John F Kennedy Intl
WestJet
11 Oct
JFK5:30 p.m.New York John F Kennedy Intl
11h 42m
1 stop
YXU5:12 a.m.London
19 Oct
YXU6:00 a.m.London
10h 32m
1 stop
JFK4:32 p.m.New York John F Kennedy Intl

United Airlines flights from United States to London, Ontario

Our best United Airlines deals on United States to London, Ontario flight tickets
United Airlines
29 Sep
SAN11:08 a.m.San Diego
19h 11m
2 stops
YXU9:19 a.m.London
4 Oct
YXU3:40 p.m.London
11h 35m
2 stops
SAN12:15 a.m.San Diego
United Airlines
30 Oct
SFO8:55 p.m.San Francisco
17h 11m
2 stops
YXU5:06 p.m.London
6 Nov
YXU5:40 p.m.London
10h 35m
2 stops
SFO1:15 a.m.San Francisco
United Airlines
18 Feb
SFO12:43 a.m.San Francisco
17h 38m
2 stops
YXU9:21 p.m.London
20 Feb
YXU5:45 a.m.London
8h 09m
1 stop
SFO10:54 a.m.San Francisco

momondo Fare Finder

 
Customize your flight search to find flights from United States to London, Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 16 September 2025.
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

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 9/10

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Wed 15/10

8:00 p.m.-4:43 p.m.

1 stop21h 43m

C$ 470

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 30/10

1:00 p.m.-7:12 p.m.

1 stop27h 12m

London

Thu 6/11

8:10 p.m.-9:30 a.m.

2 stops40h 20m

C$ 526

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 9/10

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Wed 15/10

6:00 a.m.-12:31 p.m.

2 stops31h 31m

C$ 539

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Fri 12/12

4:15 p.m.-9:21 p.m.

1 stop5h 06m

London

Tue 16/12

5:45 a.m.-11:15 a.m.

1 stop5h 30m

C$ 550

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 19/2

7:30 a.m.-9:21 p.m.

2 stops10h 51m

London

Fri 20/2

5:45 a.m.-10:54 a.m.

1 stop8h 09m

C$ 553

New YorkLondon

JFK - YXU

JFKYXU

New York John F Kennedy Intl

Wed 29/10

5:35 p.m.-7:12 p.m.

1 stop25h 37m

London

Wed 5/11

8:00 p.m.-4:37 p.m.

1 stop20h 37m

C$ 554

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Fri 12/12

8:30 a.m.-5:05 p.m.

2 stops8h 35m

London

Tue 16/12

5:40 p.m.-11:30 p.m.

1 stop5h 50m

C$ 557

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 19/2

7:30 a.m.-9:21 p.m.

2 stops10h 51m

London

Fri 20/2

9:25 a.m.-9:22 p.m.

2 stops14h 57m

C$ 559

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 29/9

11:08 a.m.-9:19 a.m.

2 stops19h 11m

London

Sat 4/10

3:40 p.m.-12:15 a.m.

2 stops11h 35m

C$ 670

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 30/10

8:55 p.m.-5:06 p.m.

2 stops17h 11m

London

Thu 6/11

5:40 p.m.-1:15 a.m.

2 stops10h 35m

C$ 682

Flights are sorted by cheapest round-trip flights first.

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See travel insights to London from

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

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 22% 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

Direct flights

None
There are no direct flights from United States to London, Ontario. There are no popular flight routes from 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?

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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.

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Thu 16/10
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