Which airlines fly to London, Ontario?

Based on our data, the most popular airlines that fly to London, Ontario from United States are Air Canada, Porter Airlines, United Airlines and American Airlines. There may also be other airline options depending on where in United States you’re flying from.

WestJet Flights to London, Ontario

There are 8 WestJet flights to London, Ontario in a normal week. The most common departure point is Calgary and the best WestJet ticket price seen on momondo is $162 (last 72 hours, from Los Angeles Los Angeles, to London, Ontario). WestJet has a score of 7.2 from 3,345 user reviews on momondo.

$129 Cheap Flights to London, Ontario in 2026

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Find the cheapest flights from the United States to London, Ontario

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 4:45 pm

SFO

YXU

7h 45m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$287WestJet

Mon, Oct 12 - Wed, Oct 21

6:00 am - 4:45 pm

SFO

YXU

7h 45m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$299WestJet

Mon, Oct 12 - Wed, Oct 21

6:05 pm - 5:20 am

SFO

YXU

8h 15m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$327WestJet

Wed, Aug 26 - Wed, Sep 23

1:00 pm - 5:20 am

SFO

YXU

13h 20m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$352WestJet

Sun, Oct 11 - Wed, Oct 21

4:35 pm - 9:20 am

SFO

YXU

13h 45m

2 stops

5:40 am - 10:39 am

YXU

SFO

7h 59m

1 stop

$376Air Canada

Sun, Oct 11 - Wed, Oct 21

8:10 am - 9:40 pm

SFO

YXU

10h 30m

2 stops

10:05 am - 3:24 pm

YXU

SFO

8h 19m

1 stop

$379Air Canada

Tue, Sep 8 - Fri, Sep 11

6:00 am - 4:45 pm

SFO

YXU

7h 45m

1 stop

6:10 am - 4:06 pm

YXU

SFO

12h 56m

2 stops

$398Multiple Airlines

Sun, Aug 2 - Sat, Aug 8

3:04 pm - 5:45 pm

SAN

YXU

23h 41m

3 stops

5:40 am - 11:35 am

YXU

SAN

8h 55m

1 stop

$609United Airlines

Tue, Aug 18 - Wed, Aug 26

10:40 pm - 9:40 pm

SAN

YXU

20h 00m

2 stops

3:30 pm - 10:10 pm

YXU

SAN

9h 40m

2 stops

$619United Airlines

Thu, Aug 20 - Mon, Aug 24

3:30 pm - 1:50 pm

SAN

YXU

19h 20m

2 stops

5:55 pm - 11:32 pm

YXU

SAN

32h 37m

2 stops

$626Multiple Airlines

Mon, Jun 22 - Mon, Jun 29

Fly from

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 10/12

6:00 am-4:45 pm

1 stop7h 45m

London

Wed 10/21

6:10 am-12:00 pm

1 stop8h 50m

$287

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 10/12

6:00 am-4:45 pm

1 stop7h 45m

London

Wed 10/21

6:10 am-12:00 pm

1 stop8h 50m

$299

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 8/26

6:05 pm-5:20 am

1 stop8h 15m

London

Wed 9/23

6:10 am-12:00 pm

1 stop8h 50m

$327

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 10/11

1:00 pm-5:20 am

1 stop13h 20m

London

Wed 10/21

6:10 am-12:00 pm

1 stop8h 50m

$352

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 10/11

4:35 pm-9:20 am

2 stops13h 45m

London

Wed 10/21

5:40 am-10:39 am

1 stop7h 59m

$376

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/8

8:10 am-9:40 pm

2 stops10h 30m

London

Fri 9/11

10:05 am-3:24 pm

1 stop8h 19m

$379

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 8/2

6:00 am-4:45 pm

1 stop7h 45m

London

Sat 8/8

6:10 am-4:06 pm

2 stops12h 56m

$398

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 8/18

3:04 pm-5:45 pm

3 stops23h 41m

London

Wed 8/26

5:40 am-11:35 am

1 stop8h 55m

$609

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 8/20

10:40 pm-9:40 pm

2 stops20h 00m

London

Mon 8/24

3:30 pm-10:10 pm

2 stops9h 40m

$619

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 6/22

3:30 pm-1:50 pm

2 stops19h 20m

London

Mon 6/29

5:55 pm-11:32 pm

2 stops32h 37m

$626

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

London, Ontario flights insights and trends

Explore insights for your London, Ontario flight to craft the best travel plan

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

If you’re flying from a popular airport in United States, such as Los Angeles Los Angeles or San Francisco, and flying into London, Ontario, then you can expect flight times to average 4h 40m and 4h 55m, respectively.

Cheapest flights to London

Find the cheapest flights to London from your nearest city or airport

Find flights from Los Angeles to Toronto Pearson Intl Airport

Cheap London, Ontario flight deals and tips

Summary info about London, Ontario flight prices, duration and airlines

Best One-Way Price	$129
Best Round-Trip Price	$287
Fastest flight time	4h 55m

The best one-way flight price to London from United States in the last 5 days is $129 (San Francisco to London).

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The best round-trip flight price to London from United States in the last 5 days is $287 (San Francisco to London).

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The fastest flight to London from United States takes 4h 55m (Chicago O'Hare Intl to London).

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Frequently asked questions about flying to London, Ontario

Is there an alternative airport near London, Ontario?

Those flying to London, Ontario could potentially find better pricing at London Airport (5 mi from London, Ontario city center), Toronto Region of Waterloo Intl Airport (54 mi from London, Ontario city center), Sarnia Airport (54 mi from London, Ontario city center), Chatham-Kent Airport (63 mi from London, Ontario city center) or Hamilton Airport (67 mi from London, Ontario city center) depending on the month and departure airport.

Is there a cheaper alternative to flying into London, Ontario?

You can find deals at Toronto Region of Waterloo Intl Airport for $180 on average, but that price can change based on your departure airport. To save money, try momondo’s Airport-to-Airport Pricing Tool.

What is the absolute cheapest flight to London, Ontario?

$102 is the cheapest deal found on momondo in the last two weeks for a flight to London, Ontario. This flight is from Fort Lauderdale and is 65% cheaper than most flights to London, Ontario. To find the cheapest price to London, Ontario from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to London Airport?

Prices for flights to London Airport refresh daily.

How many operators does momondo search for flights to London Airport?

The number of operators available for flights to London Airport is 2 as of May 2026.

How old do you have to be to fly 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 to London Airport.

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

The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

We help find the flight that best suits your needs; momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight for you.

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

momondo does allow users to show only those flights to London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights to London?

Once you have performed a search for flights to London, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.