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

Flights from London Heathrow Airport to Ontario usually depart from London Heathrow (LHR) and arrive at Ontario (ONT).

What cabin classes can I book on flights from London Heathrow Airport to Ontario?

Two cabin classes are available on flights from London Heathrow Airport to Ontario: • Economy Class • Premium Economy Class

Which airports do connecting flights from London Heathrow Airport to Ontario pass through?

One-stop flights from London Heathrow Airport to Ontario most commonly connect through: • Dallas/Fort Worth (DFW) - 34% of one-stop connections • Salt Lake City (SLC) - 16% of one-stop connections • Seattle/Tacoma Intl (SEA) - 15% of one-stop connections • Denver Intl (DEN) - 14% of one-stop connections

Can I save money by using flexible dates for flights from London Heathrow Airport to Ontario?

Yes. Flexible dates can save you up to 31% on flights from London Heathrow Airport to Ontario. Saturday is the cheapest departure day at $618 round-trip on average, while Sunday is the most expensive at $893, a difference of $275. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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.

How long is a flight from London Heathrow Airport to Ontario?

A nonstop flight from London Heathrow Airport to Ontario takes 00m, covering 5,407 miles.

Do I need a passport to fly from London Heathrow Airport 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.

How are flight prices from London Heathrow Airport to Ontario looking right now?

One-way fares from London Heathrow Airport to Ontario are currently lower than usual. Average one-way flight prices are about $466, which is 33% below the typical average for this route.

How much time can I save by choosing a different layover airport from London Heathrow Airport to Ontario?

Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 13h 27m, compared with 14h 12m via Phoenix Sky Harbor Intl (PHX) and 14h 28m via San Francisco (SFO).

What is the time difference between London Heathrow Airport and Ontario?

Ontario is 8 hours behind London Heathrow Airport (Pacific Time vs British 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 starting from around $18 for economy cars. Top options include: • Fox • Thrifty • Europcar • Dollar • Alamo

How much should I expect to pay for a London Heathrow Airport to Ontario flight?

Round-trip flights from London Heathrow Airport to Ontario range from $642 to $833, with an average of $710 over the past 12 months. Anything below $642 counts as a good deal.

How much is a round-trip flight from London Heathrow Airport to Ontario?

Round-trip flights from London Heathrow Airport to Ontario typically range from $642 to $833. The lowest price found in the past 5 days was $499, on United Airlines.

What's the cheapest day of the week to fly from London Heathrow Airport to Ontario?

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from London Heathrow Airport to Ontario. It’s 13% cheaper than the average day, while Sunday is the most expensive, with prices 25% higher.

What’s the cheapest month to fly from London Heathrow Airport to Ontario?

•January is the cheapest month to fly from London Heathrow Airport to Ontario at $553 round-trip. •June ($905) and May ($888) are the most expensive months. •The price difference between flying in the cheapest and most expensive months is 63% on average. This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

United Airlines ($499) and British Airways ($645) are the cheapest airlines to fly round-trip from London Heathrow Airport to Ontario according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from London Heathrow Airport to Ontario?

Dallas/Fort Worth (DFW) is the most popular layover for the London Heathrow Airport to Ontario route. 34% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via DFW.

What is the cheapest layover airport when flying from London Heathrow Airport to Ontario?

Flights via Phoenix Sky Harbor Intl (PHX) offer the most affordable fares, with an average round-trip price of $695. Based on KAYAK data over the past 3 months.

When flying from London Heathrow Airport to Ontario which airport offers the shortest layover?

Denver Intl (DEN) had the shortest average connection time for London Heathrow Airport to Ontario layovers at 7h 25m over the past 3 months.

$445 CHEAP FLIGHTS from London to Ontario (LHR - ONT)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$499

Typical prices: $642-$833

United Airlines

Fri 11/9Fri 11/16

LHR - ONT • 2 stops

Cheapest one-way

$445

Typical prices: $607-$875

Alaska Airlines

Thu 1/11

LHR - ONT • 1 stop

Nonstop flights

Not available

There are currently no direct flights between London Heathrow Airport and Ontario. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

January

Cheapest • 22% price drop

May

Most popular

Good to know

Top layover airports

Phoenix Sky Harbor Intl (PHX)

Cheapest • Avg $695 (round-trip)

Denver Intl (DEN)

Shortest trip • 13h 27m (one-way)

Insights

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We hope you love your trip to Ontario!

Flight Deals

Cheap Flights from London to Ontario (LHR-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

Mon, Nov 9 - Mon, Nov 16

9:00 am - 8:15 pmLHR London Heathrow-ONT Ontario

19h 15m2 stops Zurich San Francisco

6:00 am - 11:15 amONT Ontario-LHR London Heathrow

21h 15m1 stop San Francisco

$499United Airlines

Mon, Nov 9 - Mon, Nov 16

9:00 am - 8:15 pmLHR London Heathrow-ONT Ontario

19h 15m2 stops Zurich San Francisco

6:37 pm - 9:20 pmONT Ontario-LHR London Heathrow

18h 43m2 stops San Francisco Newark

$499United Airlines

Thu, Dec 3 - Wed, Dec 9

9:00 am - 8:38 pmLHR London Heathrow-ONT Ontario

19h 38m2 stops Zurich San Francisco

5:00 am - 9:40 amONT Ontario-LHR London Heathrow

20h 40m1 stop Denver Intl

$499United Airlines

Wed, Dec 2 - Wed, Dec 9

9:00 am - 8:38 pmLHR London Heathrow-ONT Ontario

19h 38m2 stops Zurich San Francisco

1:40 pm - 9:40 amONT Ontario-LHR London Heathrow

12h 00m1 stop Denver Intl

$499United Airlines

Wed, Nov 11 - Wed, Nov 18

9:00 am - 8:15 pmLHR London Heathrow-ONT Ontario

19h 15m2 stops Zurich San Francisco

6:00 am - 7:40 amONT Ontario-LHR London Heathrow

17h 40m1 stop Houston George Bush Intcntl

$500United Airlines

Wed, Nov 11 - Wed, Nov 18

9:00 am - 8:15 pmLHR London Heathrow-ONT Ontario

19h 15m2 stops Zurich San Francisco

6:00 am - 8:25 amONT Ontario-LHR London Heathrow

18h 25m2 stops Houston George Bush Intcntl Newark

$500United Airlines

Sun, Nov 8 - Sun, Nov 15

7:30 am - 8:51 pmLHR London Heathrow-ONT Ontario

21h 21m2 stops Frankfurt am Main Denver Intl

5:00 am - 9:40 amONT Ontario-LHR London Heathrow

20h 40m1 stop Denver Intl

$508United Airlines

Wed, Nov 4 - Sun, Nov 8

9:30 am - 8:15 pmLHR London Heathrow-ONT Ontario

18h 45m2 stops Frankfurt am Main San Francisco

5:00 am - 7:55 amONT Ontario-LHR London Heathrow

18h 55m2 stops Denver Intl Chicago O'Hare Intl

$508United Airlines

Mon, Mar 1 - Mon, Mar 8

2:35 pm - 10:08 pmLHR London Heathrow-ONT Ontario

15h 33m1 stop Phoenix Sky Harbor Intl

5:02 pm - 1:35 pmONT Ontario-LHR London Heathrow

12h 33m1 stop Phoenix Sky Harbor Intl

$645British Airways

Mon, Feb 8 - Mon, Feb 22

11:15 am - 6:51 pmLHR London Heathrow-ONT Ontario

15h 36m1 stop Dallas/Fort Worth

4:59 pm - 1:35 pmONT Ontario-LHR London Heathrow

12h 36m1 stop Phoenix Sky Harbor Intl

$646British Airways

Recent last minute flight deals from London to Ontario

Fri, Oct 2 - Fri, Oct 9

5:45 pm - 4:35 pmLHR London Heathrow-ONT Ontario

30h 50m2 stops Seattle/Tacoma Intl Salt Lake City

11:56 am - 11:20 amONT Ontario-LHR London Heathrow

15h 24m1 stop Seattle/Tacoma Intl

$524Delta

Fri, Oct 2 - Fri, Oct 9

11:15 am - 10:24 pmLHR London Heathrow-ONT Ontario

19h 09m1 stop Atlanta Hartsfield-Jackson

11:56 am - 3:35 pmONT Ontario-LHR London Heathrow

19h 39m1 stop Seattle/Tacoma Intl

$530Delta

Fri, Oct 2 - Thu, Oct 15

1:00 pm - 8:31 pmLHR London Heathrow-ONT Ontario

15h 31m1 stop San Francisco

1:24 pm - 9:40 amONT Ontario-LHR London Heathrow

12h 16m1 stop Denver Intl

$538United Airlines

Fri, Oct 2 - Thu, Oct 15

11:25 am - 8:58 pmLHR London Heathrow-ONT Ontario

17h 33m1 stop Denver Intl

1:24 pm - 9:40 amONT Ontario-LHR London Heathrow

12h 16m1 stop Denver Intl

$538United Airlines

Sat, Oct 3 - Sat, Oct 17

10:35 am - 5:46 pmLHR London Heathrow-ONT Ontario

15h 11m1 stop San Francisco

4:03 pm - 2:10 pmONT Ontario-LHR London Heathrow

14h 07m1 stop San Francisco

$538United Airlines

Sat, Oct 3 - Sat, Oct 10

4:15 pm - 10:51 pmLHR London Heathrow-ONT Ontario

14h 36m1 stop San Francisco

1:52 pm - 11:10 amONT Ontario-LHR London Heathrow

13h 18m1 stop San Francisco

$538United Airlines

Fri, Oct 2 - Mon, Oct 5

2:50 pm - 8:58 pmLHR London Heathrow-ONT Ontario

14h 08m1 stop Denver Intl

9:25 am - 7:25 amONT Ontario-LHR London Heathrow

14h 00m1 stop San Francisco

$538United Airlines

Fri, Oct 2 - Fri, Oct 9

1:40 pm - 9:59 pmLHR London Heathrow-ONT Ontario

16h 19m1 stop Houston George Bush Intcntl

1:52 pm - 11:10 amONT Ontario-LHR London Heathrow

13h 18m1 stop San Francisco

$538United Airlines

Fri, Oct 2 - Thu, Oct 15

2:45 pm - 9:29 amLHR London Heathrow-ONT Ontario

26h 44m1 stop Dallas/Fort Worth

7:00 am - 9:25 amONT Ontario-LHR London Heathrow

18h 25m1 stop Dallas/Fort Worth

$633British Airways

Thu, Oct 1 - Wed, Oct 14

4:25 pm - 11:36 pmLHR London Heathrow-ONT Ontario

15h 11m1 stop Dallas/Fort Worth

2:22 pm - 12:50 pmONT Ontario-LHR London Heathrow

14h 28m1 stop Dallas/Fort Worth

$678British Airways

Booking Insights

Price, demand and travel trends for London Heathrow Airport to Ontario flights

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

Prices

Airlines

Layovers

How much is a round-trip flight from London Heathrow Airport to Ontario? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Ontario departing in november.
What's the cheapest day of the week to fly from London Heathrow Airport to Ontario?: Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from London Heathrow Airport to Ontario. It’s 13% cheaper than the average day, while Sunday is the most expensive, with prices 25% higher.
What’s the cheapest month to fly from London Heathrow Airport to Ontario? KAYAK internal proprietary data takes all prices for each month over the last 12 months for round-trip flights from London Heathrow Airport to Ontario, removes the top 0.1% to account for outliers and then takes the median of all values for each month.: •January is the cheapest month to fly from London Heathrow Airport to Ontario at $553 round-trip.
•June ($905) and May ($888) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 63% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Low season	October
High season	May
Cheapest flight	$445

Beat the crowds with an average 66% drop in travelers.

One-way flight from London Heathrow Airport 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.

What cabin classes can I book on flights from London Heathrow Airport to Ontario?
Two cabin classes are available on flights from London Heathrow Airport to Ontario:

• Economy Class
• Premium Economy Class
How long is a flight from London Heathrow Airport to Ontario?
A nonstop flight from London Heathrow Airport to Ontario takes 00m, covering 5,407 miles.
Do I need a passport to fly from London Heathrow Airport 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.
How much should I expect to pay for a London Heathrow Airport to Ontario flight?
Round-trip flights from London Heathrow Airport to Ontario range from $642 to $833, with an average of $710 over the past 12 months. Anything below $642 counts as a good deal.
How are flight prices from London Heathrow Airport to Ontario looking right now?
One-way fares from London Heathrow Airport to Ontario are currently lower than usual. Average one-way flight prices are about $466, which is 33% below the typical average for this route.
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

• Fox
• Thrifty
• Europcar
• Dollar
• Alamo
Which airports can I use when flying from London Heathrow Airport to Ontario?
Flights from London Heathrow Airport to Ontario usually depart from London Heathrow (LHR) and arrive at Ontario (ONT).
Which airports do connecting flights from London Heathrow Airport to Ontario pass through?
One-stop flights from London Heathrow Airport to Ontario most commonly connect through:

• Dallas/Fort Worth (DFW) - 34% of one-stop connections
• Salt Lake City (SLC) - 16% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 15% of one-stop connections
• Denver Intl (DEN) - 14% of one-stop connections
Can I save money by using flexible dates for flights from London Heathrow Airport to Ontario?
Yes. Flexible dates can save you up to 31% on flights from London Heathrow Airport to Ontario. Saturday is the cheapest departure day at $618 round-trip on average, while Sunday is the most expensive at $893, a difference of $275.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How much time can I save by choosing a different layover airport from London Heathrow Airport to Ontario?
Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 13h 27m, compared with 14h 12m via Phoenix Sky Harbor Intl (PHX) and 14h 28m via San Francisco (SFO).
What is the time difference between London Heathrow Airport and Ontario?
Ontario is 8 hours behind London Heathrow Airport (Pacific Time vs British 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 your dates are flexible, aim for a Saturday departure and avoid flying on Sunday. On this route, Saturday flights average $618, about $275 less than Sunday fares (31% savings) based on the last 12 months.
If you can choose when to travel, plan your London Heathrow Airport to Ontario trip for January. Fares historically average $553 round-trip in that month - typically $352 less than the most expensive month, which is June (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

• Azure Hotel & Suites, Trademark Collection by Wyndham
• La Quinta Inn & Suites by Wyndham Ontario Airport
• Ontario Airport Inn

More options for your flight from London to Ontario

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

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LHR - ONT

$445 Find Cheap Flights from London to Ontario - Compare and Save

Everything you should know

Cheap Flights from London to Ontario (LHR-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 Heathrow Airport to Ontario flights

How much is a round-trip flight from London Heathrow Airport to Ontario?

What's the cheapest day of the week to fly from London Heathrow Airport to Ontario?

What’s the cheapest month to fly from London Heathrow Airport to Ontario?

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

What’s the most popular layover airport when flying from London Heathrow Airport to Ontario?

What is the cheapest layover airport when flying from London Heathrow Airport to Ontario?

When flying from London Heathrow Airport to Ontario which airport offers the shortest layover?

Key details for London Heathrow Airport to Ontario flights

Low season

High season

Cheapest flight

When to book flights from London to Ontario

Your London Heathrow Airport to Ontario flight questions, answered

Your guide to booking London Heathrow Airport 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 to Ontario

Find direct flights to and from London and Ontario

Flights from domestic origins to Ontario

Flights to other popular destinations

Find deals for your return flight