What airlines fly to London, Ontario?

Air Canada, Porter Airlines and United Airlines 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 47% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 8 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?

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

How long does it take to fly to London, Ontario?

If you’re flying from a popular airport in United States, such as New York or Boston, and flying into London, Ontario, then you can expect flight times to average 1h 43m and 1h 48m, respectively.

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 many operators does momondo search for flights from United States to London Airport?

As of July 2025, there are 3 operators available to choose from for flights from United States to London Airport.

How old do you have to be to fly from United States to London Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to London Airport.

What documentation or ID do you need to fly to London Airport?

The travel and health documents you'll need for your trip to London Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$155 Cheap Flights from the United States to London in 2025

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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

6:30 pm - 5:12 amBOS-YXU

10h 42m1 stop

6:00 am - 5:40 pmYXU-BOS

11h 40m1 stop

$270WestJet

Find Deal

Fri, Oct 17 - Sun, Oct 19

7:35 pm - 5:14 amSEA-YXU

6h 39m1 stop

8:00 pm - 8:28 pmYXU-SEA

27h 28m1 stop

$286WestJet

Find Deal

Tue, Jul 29 - Tue, Aug 5

7:05 am - 7:09 pmSEA-YXU

9h 04m1 stop

8:00 pm - 8:28 pmYXU-SEA

27h 28m1 stop

$306WestJet

Find Deal

Tue, Jul 29 - Tue, Aug 5

5:30 pm - 5:12 amORD-YXU

10h 42m1 stop

8:00 pm - 4:43 pmYXU-ORD

21h 43m1 stop

$308WestJet

Find Deal

Fri, Sep 26 - Mon, Sep 29

7:20 am - 9:27 pmSEA-YXU

11h 07m2 stops

6:15 am - 11:00 amYXU-SEA

7h 45m1 stop

$326Air Canada

Find Deal

Tue, Jul 29 - Tue, Aug 5

7:20 am - 9:27 pmSEA-YXU

11h 07m2 stops

9:55 am - 8:45 pmYXU-SEA

13h 50m2 stops

$332Air Canada

Find Deal

Tue, Jul 29 - Tue, Aug 5

3:30 pm - 5:12 amBOS-YXU

13h 42m2 stops

8:00 pm - 9:30 amYXU-BOS

13h 30m2 stops

$400

Find Deal

Thu, Sep 4 - Wed, Sep 10

10:59 am - 9:00 pmLGA-YXU

34h 01m3 stops

9:55 am - 3:54 pmYXU-LGA

5h 59m1 stop

$421

Find Deal

Thu, Sep 4 - Wed, Sep 10

6:25 am - 9:27 pmSEA-YXU

12h 02m2 stops

6:15 am - 10:59 amYXU-SEA

7h 44m1 stop

$488United Airlines

Find Deal

Tue, Aug 26 - Tue, Sep 2

6:25 am - 9:27 pmSEA-YXU

12h 02m2 stops

6:15 am - 10:20 pmYXU-SEA

19h 05m2 stops

$503United Airlines

Find Deal

Tue, Aug 26 - Tue, Sep 2

WestJet flights from United States to London, Ontario

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

WestJet

Oct 17

BOS6:30 pmBoston Logan Intl

10h 42m

1 stop

YXU5:12 amLondon

Oct 19

YXU6:00 amLondon

11h 40m

1 stop

BOS5:40 pmBoston Logan Intl

$270

Find similar

WestJet

Jul 29

SEA7:35 pmSeattle/Tacoma Intl

6h 39m

1 stop

YXU5:14 amLondon

Aug 5

YXU8:00 pmLondon

27h 28m

1 stop

SEA8:28 pmSeattle/Tacoma Intl

$286

Find similar

WestJet

Jul 29

SEA7:05 amSeattle/Tacoma Intl

9h 04m

1 stop

YXU7:09 pmLondon

Aug 5

YXU8:00 pmLondon

27h 28m

1 stop

SEA8:28 pmSeattle/Tacoma Intl

$306

Find similar

Air Canada flights from United States to London, Ontario

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

Air Canada

Jul 29

SEA7:20 amSeattle/Tacoma Intl

11h 07m

2 stops

YXU9:27 pmLondon

Aug 5

YXU6:15 amLondon

7h 45m

1 stop

SEA11:00 amSeattle/Tacoma Intl

$326

Find similar

Air Canada

Jul 29

SEA7:20 amSeattle/Tacoma Intl

11h 07m

2 stops

YXU9:27 pmLondon

Aug 5

YXU9:55 amLondon

13h 50m

2 stops

SEA8:45 pmSeattle/Tacoma Intl

$332

Find similar

Air Canada

Aug 16

SEA7:20 amSeattle/Tacoma Intl

11h 07m

2 stops

YXU9:27 pmLondon

Aug 23

YXU5:45 pmLondon

18h 36m

2 stops

SEA9:21 amSeattle/Tacoma Intl

$351

Find similar

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 day to depart on your flight to London, Ontario?

According to our data, Wednesday is the cheapest day to fly to London, Ontario from United States. The lowest ticket price found for a Wednesday departure recently was $199. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Friday is $549.

What is the cheapest time of day to depart on your flight to London, Ontario?

In the afternoon is the cheapest time of day to fly from United States to London, Ontario when you can find flight prices for as low as $284. Flying to London, Ontario in the afternoon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $514 per ticket.

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 are 1 cabin classes 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?

No. A direct flight is the cheapest option for a flight between United States to London, Ontario.

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

Best Price Found	$155
Fastest flight time	4h 02m
Direct flights	None
Airports in London, Ontario	1 airport

The best one-way flight to London, Ontario from United States in the past 72 hours is $155. The best round-trip flight deal from United States to London, Ontario found on momondo in the last 72 hours is $270.

The fastest flight from United States to London, Ontario takes 4h 02m

There are no direct flights from United States to London, Ontario. Popular non-direct routes for this connection are Boston Logan Intl Airport - London Airport, Chicago O'Hare Intl Airport - London Airport and San Francisco Airport - London Airport.

There is 1 airport near London, Ontario: London (YXU)

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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 many operators does momondo search for flights from United States to London Airport?
As of July 2025, there are 3 operators available to choose from for flights from United States to London Airport.
How old do you have to be to fly from United States to London Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to London Airport.
What documentation or ID do you need to fly to London Airport?
The travel and health documents you'll need for your trip to London Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United States to London, Ontario?
Based on momondo bookings for flights between United States and London, Ontario, the leading plane model is Boeing 737 MAX 8, making up 80.00% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 20.00%.

Best airlines flying from United States to London, Ontario

Compare and see reviews for airlines that fly from United States to London, Ontario with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $178	Free Cancellation	Rating 7.1 9,717 reviews	Search Air Canada flights
United Airlines	PriceFrom $183	Free Cancellation	Rating 7.4 8,856 reviews	Search United Airlines flights
WestJet	PriceFrom $306	Free Cancellation	Rating 7.2 2,939 reviews	Search WestJet flights

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Why use momondo?

Why should I use momondo to find a flight deal from United States to London?

It is quick and easy to find United States to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from United States to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from United States with this policy.

How can momondo help me find flights from United States to London?

momondo helps you find the best flight between United States and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from United States to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from United States and alert you when they change.