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 $596 to $2,615. That means the highest observed fare was about 4x 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 • Thrifty • Europcar • Dollar • Alamo

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

United Airlines ($714) offered the cheapest round-trip ticket from London to Ontario in the last 5 days.

Cheap Flights from London to Ontario | KAYAK

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Cheapest round-trip

$596

Typical prices: $422-$422

Multiple Airlines

Tue 12/11Tue 12/18

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

Recent round-trip flight deals from London to Ontario

Fri, Dec 11 - Fri, Dec 18

9:30 am - 7:44 amYXU London-ONT Ontario

25h 14m2 stops Fort Lauderdale Dallas/Fort Worth

10:23 am - 2:05 pmONT Ontario-YXU London

24h 42m2 stops Las Vegas Harry Reid Intl Orlando

$596Multiple Airlines

Fri, Dec 11 - Fri, Dec 18

9:30 am - 7:44 amYXU London-ONT Ontario

25h 14m3 stops Fort Lauderdale Cincinnati Cinci./N. Kentucky Dallas/Fort Worth

10:23 am - 2:05 pmONT Ontario-YXU London

24h 42m2 stops Las Vegas Harry Reid Intl Orlando

$601Multiple Airlines

Fri, Dec 11 - Fri, Dec 18

9:30 am - 7:44 amYXU London-ONT Ontario

25h 14m3 stops Fort Lauderdale Cincinnati Cinci./N. Kentucky Dallas/Fort Worth

11:32 am - 2:05 pmONT Ontario-YXU London

23h 33m3 stops Denver Intl Las Vegas Harry Reid Intl Orlando

$661Multiple Airlines

Sat, Dec 5 - Tue, Dec 8

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

15h 06m2 stops Toronto Pearson Intl San Francisco

5:00 am - 9:52 pmONT Ontario-YXU London

13h 52m2 stops Denver Intl Toronto Pearson Intl

$714United Airlines

Sat, Dec 5 - Tue, Dec 8

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

15h 06m2 stops Toronto Pearson Intl San Francisco

5:00 am - 9:52 pmONT Ontario-YXU London

13h 52m2 stops Denver Intl Toronto Pearson Intl

$715United Airlines

Thu, Feb 11 - Sat, Feb 20

5:30 am - 12:39 pmYXU London-ONT Ontario

10h 09m2 stops Toronto Pearson Intl Denver Intl

5:00 am - 9:52 pmONT Ontario-YXU London

13h 52m2 stops Denver Intl Toronto Pearson Intl

$728United Airlines

Sat, Dec 5 - Tue, Dec 8

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

15h 06m2 stops Toronto Pearson Intl San Francisco

5:00 am - 9:52 pmONT Ontario-YXU London

13h 52m2 stops Denver Intl Toronto Pearson Intl

$731United Airlines

Fri, Dec 11 - Fri, Dec 18

9:15 am - 8:38 pmYXU London-ONT Ontario

14h 23m2 stops Toronto Pearson Intl San Francisco

11:52 pm - 9:52 pmONT Ontario-YXU London

19h 00m2 stops Chicago O'Hare Intl Toronto Pearson Intl

$771United Airlines

Thu, Nov 26 - Thu, Dec 3

9:05 pm - 5:56 pmYXU London-ONT Ontario

23h 51m2 stops Toronto Pearson Intl San Francisco

5:45 am - 8:32 amONT Ontario-YXU London

23h 47m2 stops Houston George Bush Intcntl Toronto Pearson Intl

$801United Airlines

Sat, Dec 5 - Tue, Dec 8

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

15h 06m2 stops Toronto Pearson Intl San Francisco

5:00 am - 9:52 pmONT Ontario-YXU London

13h 52m3 stops Denver Intl New York LaGuardia Toronto Pearson Intl

$1,192United 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?: United Airlines ($714) offered the cheapest round-trip ticket from London to Ontario in the last 5 days.

Find deals

Cheapest flight	$258

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 $596 to $2,615. That means the highest observed fare was about 4x 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
• Thrifty
• Europcar
• Dollar
• Alamo
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

$258 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

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