Which airports can I use when flying from London to Ontario?

Flights from London to Ontario usually depart from London (YXU) and arrive at Ontario (ONT).

What popular places can I visit in Ontario?

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Do I need a passport to fly from London to Ontario?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from London to Ontario changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $629 to $1,445. That means the highest observed fare was about 2x higher than the lowest one.

What is the time difference between London and Ontario?

Ontario is 3 hours behind London (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Ontario Airport (ONT)?

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include: • Fox • Europcar • Thrifty • Alamo • Dollar

Which airline is the cheapest to fly from London to Ontario?

Air Canada ($770) and United Airlines ($779) are the cheapest airlines to fly round-trip from London to Ontario according to KAYAK data over the last 5 days.

Cheap Flights from London to Ontario | KAYAK

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Cheapest round-trip

$629

Typical prices: $422-$422

Multiple Airlines

Sat 12/22Sat 12/29

YXU - ONT • 2 stops

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Flight Deals

Cheap Flights from London to Ontario (YXU-ONT)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from London to Ontario

Tue, Dec 22 - Tue, Dec 29

8:20 am - 7:07 amYXU London-ONT Ontario

25h 47m2 stops Orlando Las Vegas Harry Reid Intl

6:30 am - 10:55 pmONT Ontario-YXU London

37h 25m3 stops Denver Intl Dallas/Fort Worth Fort Lauderdale

$629Multiple Airlines

Tue, Dec 22 - Tue, Dec 29

8:20 am - 9:21 amYXU London-ONT Ontario

28h 01m3 stops Orlando Atlanta Hartsfield-Jackson San Francisco

6:30 am - 10:55 pmONT Ontario-YXU London

37h 25m3 stops Denver Intl Dallas/Fort Worth Fort Lauderdale

$654Multiple Airlines

Tue, Dec 22 - Tue, Dec 29

8:20 am - 7:07 amYXU London-ONT Ontario

25h 47m2 stops Orlando Las Vegas Harry Reid Intl

7:10 pm - 10:55 pmONT Ontario-YXU London

24h 45m2 stops Dallas/Fort Worth Fort Lauderdale

$680Multiple Airlines

Thu, Jan 21 - Mon, Jan 25

9:15 am - 8:25 pmYXU London-ONT Ontario

14h 10m2 stops Toronto Pearson Intl San Francisco

5:00 am - 5:07 pmONT Ontario-YXU London

9h 07m2 stops Denver Intl Toronto Pearson Intl

$770Air Canada

Sun, Dec 20 - Sun, Dec 27

6:15 am - 10:47 amYXU London-ONT Ontario

31h 32m3 stops Fort Lauderdale Atlanta Hartsfield-Jackson Denver Intl

6:30 am - 1:45 pmONT Ontario-YXU London

28h 15m3 stops Denver Intl Atlanta Hartsfield-Jackson Fort Lauderdale

$775Multiple Airlines

Thu, Jan 7 - Sat, Apr 3

3:20 pm - 9:57 amYXU London-ONT Ontario

21h 37m2 stops Toronto Pearson Intl San Francisco

7:00 am - 9:44 pmONT Ontario-YXU London

11h 44m2 stops Chicago O'Hare Intl Toronto Pearson Intl

$779United Airlines

Fri, Dec 4 - Tue, Dec 8

5:30 am - 5:36 pmYXU London-ONT Ontario

15h 06m2 stops Toronto Pearson Intl San Francisco

7:00 am - 9:52 pmONT Ontario-YXU London

11h 52m2 stops Chicago O'Hare Intl Toronto Pearson Intl

$781United Airlines

Fri, Dec 4 - Tue, Dec 8

5:30 am - 5:36 pmYXU London-ONT Ontario

15h 06m2 stops Toronto Pearson Intl San Francisco

7:00 am - 9:52 pmONT Ontario-YXU London

11h 52m2 stops Chicago O'Hare Intl Toronto Pearson Intl

$784United Airlines

Fri, Dec 4 - Tue, Dec 8

5:30 am - 5:36 pmYXU London-ONT Ontario

15h 06m2 stops Toronto Pearson Intl San Francisco

7:00 am - 9:52 pmONT Ontario-YXU London

11h 52m2 stops Chicago O'Hare Intl Toronto Pearson Intl

$790United Airlines

Thu, Dec 24 - Thu, Dec 31

5:30 am - 10:31 pmYXU London-ONT Ontario

20h 01m2 stops Toronto Pearson Intl Chicago O'Hare Intl

5:00 am - 8:37 amONT Ontario-YXU London

24h 37m2 stops Denver Intl Toronto Pearson Intl

$799United Airlines

Booking Insights

Price, demand and travel trends for London to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from London to Ontario?: Air Canada ($770) and United Airlines ($779) are the cheapest airlines to fly round-trip from London to Ontario according to KAYAK data over the last 5 days.

Find deals

Cheapest flight	$267

One-way flight from London to Ontario

When to book flights from London to Ontario

Are your dates flexible? Find out the best times to travel from London to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Do I need a passport to fly from London to Ontario?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from London to Ontario changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $629 to $1,445. That means the highest observed fare was about 2x higher than the lowest one.
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Alamo
• Dollar
Which airports can I use when flying from London to Ontario?
Flights from London to Ontario usually depart from London (YXU) and arrive at Ontario (ONT).
What is the time difference between London and Ontario?
Ontario is 3 hours behind London (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Ontario?
Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

• Ontario Airport Inn
• Azure Hotel & Suites, Trademark Collection by Wyndham
• Holiday Inn Ontario Airport By IHG

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YXU - ONT

$267 Find Cheap Flights from London to Ontario - Compare and Save

Everything you should know

Cheap Flights from London to Ontario (YXU-ONT)

Recent round-trip flight deals from London to Ontario

Recent one-way flight deals from London to Ontario

Recent last minute flight deals from London to Ontario

Price, demand and travel trends for London to Ontario flights

Which airline is the cheapest to fly from London to Ontario?

Key details for London to Ontario flights

Cheapest flight

When to book flights from London to Ontario

Your London to Ontario flight questions, answered

Your guide to booking London to Ontario flights

More options for your flight from London to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from London to Ontario

Find direct flights to and from London and Ontario

Flights from domestic origins to Ontario

Flights to other popular destinations