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Cheap flights from the United Kingdom to Ontario (ONT) from $598

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LHR — ONT
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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How far in advance should I book a flight from United Kingdom to Ontario?

Users have found that booking a flight from United Kingdom to Ontario at least 50 days early can save you up to 13% on average compared to booking a flight this week. If booking 50 days before your flight isn’t an option for you, users have found flights from United Kingdom to Ontario for as little as $628 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $763 for flights departing within the next 3 days.

What is the cheapest month to fly from United Kingdom to Ontario?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to Ontario. Flights to Ontario from United Kingdom in November are about $633 on average during November, but can be found for as low as $444.

When is the cheapest time to fly from United Kingdom to Ontario (GB - ONT)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Ontario as you normally would.

Cheap American Airlines flights from United Kingdom to Ontario

Explore cheap flight options specifically provided by American Airlines for the route between United Kingdom and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Consider these cheap American Airlines flights we've found departing from United Kingdom to Ontario. Make sure to double check the flight details before booking.
Wed 6/123:15 pmLHR - ONT
1 stop15h 44mAmerican Airlines
Wed 6/262:44 pmONT - LHR
1 stop14h 01mAmerican Airlines
Deal found 5/14$598
Tue 5/284:25 pmLHR - ONT
1 stop15h 31mAmerican Airlines
Tue 6/412:53 pmONT - LHR
1 stop14h 12mAmerican Airlines
Deal found 5/14$599
Wed 9/113:15 pmLHR - ONT
1 stop14h 45mAmerican Airlines
Sun 9/2211:59 pmONT - LHR
1 stop22h 26mAmerican Airlines
Deal found 5/15$635
Thu 6/133:15 pmLHR - ONT
1 stop15h 44mAmerican Airlines
Thu 6/2010:54 amONT - LHR
1 stop13h 06mAmerican Airlines
Deal found 5/14$636
Tue 6/46:00 amEDI - ONT
2 stops20h 59mAmerican Airlines
Tue 6/118:10 amONT - EDI
2 stops17h 10mAmerican Airlines
Deal found 5/14$671
Thu 6/610:15 amEDI - ONT
2 stops20h 44mAmerican Airlines
Sun 6/912:49 pmONT - EDI
2 stops18h 51mAmerican Airlines
Deal found 5/14$746
Wed 6/1212:20 pmLGW - ONT
2 stops19h 39mAmerican Airlines
Wed 6/1911:59 pmONT - LGW
2 stops24h 11mAmerican Airlines
Deal found 5/15$756
Tue 5/219:15 amLHR - ONT
1 stop17h 44mAmerican Airlines
Sat 5/2511:30 pmONT - LHR
1 stop24h 00mAmerican Airlines
Deal found 5/15$1,171
Tue 5/218:15 amBHX - ONT
2 stops18h 44mAmerican Airlines
Sun 8/1810:35 pmONT - BHX
2 stops25h 05mAmerican Airlines
Deal found 5/15$1,889

Cheap Finnair flights from United Kingdom to Ontario

Explore cheap flight options specifically provided by Finnair for the route between United Kingdom and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Have a look at some of the cheapest available Finnair flights departing from United Kingdom and landing in Ontario. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Wed 9/183:15 pmLHR - ONT
1 stop14h 45mFinnair
Thu 10/310:50 amONT - LHR
1 stop13h 10mFinnair
Deal found 5/15$601
Thu 11/711:55 amLHR - ONT
1 stop13h 57mFinnair
Thu 11/1410:56 amONT - LHR
1 stop13h 19mFinnair
Deal found 5/15$640
Tue 10/84:25 pmLHR - ONT
1 stop15h 01mFinnair
Fri 10/182:52 pmONT - LHR
1 stop13h 53mFinnair
Deal found 5/15$789
Thu 5/2311:00 amLHR - ONT
1 stop15h 48mFinnair
Tue 6/1110:45 pmONT - LHR
1 stop24h 55mFinnair
Deal found 5/15$999
Sun 5/264:25 pmLHR - ONT
1 stop15h 31mFinnair
Tue 6/412:53 pmONT - LHR
1 stop14h 12mFinnair
Deal found 5/15$1,001
Tue 5/219:15 amLHR - ONT
1 stop17h 44mFinnair
Tue 5/282:50 pmONT - LHR
1 stop13h 25mFinnair
Deal found 5/16$1,034
Thu 5/2312:00 pmLHR - ONT
1 stop16h 08mFinnair
Sat 5/2511:30 pmONT - LHR
1 stop24h 00mFinnair
Deal found 5/15$1,040

Cheap United Kingdom to Ontario flights in May & June 2024

Find cheap flight options from United Kingdom to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
These are some of the most attractive deals on flights from United Kingdom to Ontario in 2024. Check back soon for alternative fares.
Wed 6/123:15 pmLHR - ONT
1 stop15h 44mAmerican Airlines
Wed 6/262:44 pmONT - LHR
1 stop14h 01mAmerican Airlines
Deal found 5/14$598
Tue 5/284:25 pmLHR - ONT
1 stop15h 31mAmerican Airlines
Tue 6/412:53 pmONT - LHR
1 stop14h 12mAmerican Airlines
Deal found 5/14$599
Thu 6/133:15 pmLHR - ONT
1 stop15h 44mAmerican Airlines
Thu 6/2010:54 amONT - LHR
1 stop13h 06mAmerican Airlines
Deal found 5/14$636
Tue 6/46:00 amEDI - ONT
2 stops20h 59mAmerican Airlines
Tue 6/118:10 amONT - EDI
2 stops17h 10mAmerican Airlines
Deal found 5/14$671
Wed 6/261:40 pmLHR - ONT
1 stop15h 34mUnited Airlines
Wed 9/257:40 amONT - LHR
1 stop15h 15mUnited Airlines
Deal found 5/15$690
Tue 6/254:15 pmLHR - ONT
1 stop14h 12mUnited Airlines
Tue 9/247:40 amONT - LHR
1 stop15h 15mUnited Airlines
Deal found 5/16$691
Thu 6/610:15 amEDI - ONT
2 stops20h 44mAmerican Airlines
Sun 6/912:49 pmONT - EDI
2 stops18h 51mAmerican Airlines
Deal found 5/14$746
Wed 6/1212:20 pmLGW - ONT
2 stops19h 39mAmerican Airlines
Wed 6/1911:59 pmONT - LGW
2 stops24h 11mAmerican Airlines
Deal found 5/15$756
Mon 6/1711:05 amLHR - ONT
1 stop17h 43mUnited Airlines
Mon 6/246:10 amONT - LHR
1 stop20h 15mUnited Airlines
Deal found 5/15$759

United Kingdom to Ontario 2024 flight deals

Discover exclusive flight deals for travel between United Kingdom and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
These are some of the most attractive deals on flights from United Kingdom to Ontario in 2024. Check back soon for alternative fares.
Wed 6/123:15 pmLHR - ONT
1 stop15h 44mAmerican Airlines
Wed 6/262:44 pmONT - LHR
1 stop14h 01mAmerican Airlines
Deal found 5/14$598
Tue 5/284:25 pmLHR - ONT
1 stop15h 31mAmerican Airlines
Tue 6/412:53 pmONT - LHR
1 stop14h 12mAmerican Airlines
Deal found 5/14$599
Wed 9/183:15 pmLHR - ONT
1 stop14h 45mFinnair
Thu 10/310:50 amONT - LHR
1 stop13h 10mFinnair
Deal found 5/15$601
Wed 9/112:50 pmLHR - ONT
1 stop14h 12mUnited Airlines
Tue 9/241:35 pmONT - LHR
1 stop12h 05mUnited Airlines
Deal found 5/15$608
Tue 12/3110:05 amLHR - ONT
1 stop15h 55mUnited Airlines
Tue 1/211:00 pmONT - LHR
1 stop12h 40mUnited Airlines
Deal found 5/16$610
Tue 9/1010:25 amLHR - ONT
1 stop15h 31mUnited Airlines
Tue 10/81:30 pmONT - LHR
1 stop12h 10mUnited Airlines
Deal found 5/16$611
Mon 9/161:40 pmLHR - ONT
1 stop15h 51mUnited Airlines
Mon 9/301:30 pmONT - LHR
1 stop12h 10mUnited Airlines
Deal found 5/15$615
Wed 11/1310:25 amLHR - ONT
2 stops18h 00mUnited Airlines
Sun 11/176:35 pmONT - LHR
1 stop28h 50mUnited Airlines
Deal found 5/14$618
Wed 11/1310:00 amLHR - ONT
2 stops18h 25mUnited Airlines
Sun 11/176:35 pmONT - LHR
1 stop28h 50mUnited Airlines
Deal found 5/15$621

United Kingdom to Ontario flights leaving soon

Find last-minute flight options from United Kingdom to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Check out these flights departing soon from United Kingdom to Ontario. Users should be sure to double check the price, date, and time of their last-minute flight.
Wed 5/228:00 amMAN - ONT
2 stops22h 29mBritish Airways
Fri 6/282:44 pmONT - MAN
2 stops18h 26mBritish Airways
Deal found 5/15$817
Wed 5/2211:05 amLHR - ONT
1 stop17h 48mUnited Airlines
Wed 6/55:15 amONT - LHR
1 stop23h 05mUnited Airlines
Deal found 5/15$970
Wed 5/222:50 pmLHR - ONT
1 stop14h 03mUnited Airlines
Wed 5/291:50 pmONT - LHR
1 stop12h 35mUnited Airlines
Deal found 5/15$976
Wed 5/228:40 amLHR - ONT
2 stops21h 58mDelta
Wed 6/56:50 amONT - LHR
2 stops19h 40mDelta
Deal found 5/15$989
Thu 5/2311:00 amLHR - ONT
1 stop15h 48mFinnair
Tue 6/1110:45 pmONT - LHR
1 stop24h 55mFinnair
Deal found 5/15$999
Sun 5/264:25 pmLHR - ONT
1 stop15h 31mFinnair
Tue 6/412:53 pmONT - LHR
1 stop14h 12mFinnair
Deal found 5/15$1,001
Sun 5/262:50 pmLHR - ONT
1 stop13h 58mUnited Airlines
Mon 6/175:15 amONT - LHR
1 stop23h 05mUnited Airlines
Deal found 5/15$1,007
Sun 5/2612:20 pmLHR - ONT
1 stop15h 34mUnited Airlines
Mon 6/176:25 pmONT - LHR
1 stop31h 15mUnited Airlines
Deal found 5/16$1,013
Sun 5/264:25 pmLHR - ONT
1 stop15h 31mIberia
Tue 7/1610:48 amONT - LHR
1 stop13h 12mIberia
Deal found 5/16$1,028

One-way flights to Ontario from United Kingdom

Search for one-way flight options from United Kingdom to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
If you're seeking multiple options on one-way flights from United Kingdom to Ontario, be sure to check out these deals, which are updated often. Those needing a return flight from United Kingdom to Ontario can use the search form above.
Wed 9/411:35 amLGW - ONT
3 stops30h 32mMultiple Airlines
Deal found 5/15$608
Wed 9/410:30 pmLHR - ONT
2 stops32h 27mMultiple Airlines
Deal found 5/15$704
Tue 8/2710:30 amLGW - ONT
1 stop19h 58mJetBlue
Deal found 5/15$750
Mon 6/310:30 amLGW - ONT
1 stop19h 39mJetBlue
Deal found 5/15$754
Wed 5/2910:30 amLGW - ONT
1 stop19h 39mJetBlue
Deal found 5/15$757
Wed 6/510:30 amLGW - ONT
1 stop19h 39mJetBlue
Deal found 5/16$758
Mon 6/1010:30 amLGW - ONT
1 stop19h 39mJetBlue
Deal found 5/16$764
Sun 9/2210:30 amLGW - ONT
1 stop19h 51mJetBlue
Deal found 5/15$766
Thu 9/1910:30 amLGW - ONT
1 stop19h 51mJetBlue
Deal found 5/15$767

Find flights from United Kingdom to Ontario within your budget

Customize your flight search to find flights from United Kingdom to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$598 - $717

Route

Depart

Return

Price

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 6/12

1 stop15h 44m

Ontario

Wed 6/26

1 stop14h 01m

$598

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/18

1 stop14h 45m

Ontario

Thu 10/3

1 stop13h 10m

$601

London GatwickOntario

LGW - ONT

LGWONT

London Gatwick

Wed 9/11

2 stops20h 36m

Ontario

Tue 9/24

2 stops19h 50m

$602

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/11

1 stop14h 12m

Ontario

Tue 9/24

1 stop12h 05m

$608

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 11/4

1 stop14h 28m

Ontario

Mon 11/11

1 stop14h 25m

$638

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sat 10/26

1 stop13h 42m

Ontario

Sat 11/9

1 stop12h 40m

$661

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sun 9/22

1 stop15h 01m

Ontario

Mon 9/30

1 stop13h 10m

$670

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/11

2 stops20h 40m

Ontario

Sun 9/22

2 stops18h 20m

$694

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 8/26

1 stop18h 33m

Ontario

Mon 9/9

1 stop13h 09m

$717

Flights are sorted by cheapest first

Deals found on 5/14

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated May 16, 2024.
To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about American Airlines, Finnair and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Delta
8.0
Very good
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

KLM
7.9
Good
1,568 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Finnair
7.8
Good
1,376 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

JetBlue
7.6
Good
4,472 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Avianca
7.5
Good
3,765 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from United Kingdom?

    If you book a flight to Ontario from United Kingdom, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • Can I find flights from United Kingdom to Ontario for under $600 on Cheapflights?

    Yes, there are multiple flights from United Kingdom to Ontario for under $600. The cheapest flight booked recently is on American Airlines for just $598, but on average you can expect to pay $638.

  • Are there last-minute flights available from United Kingdom to Ontario for under $900?

    There are currently 20+ open flights from United Kingdom to Ontario within the next 7 days for less than $900.

  • What are the most popular routes from United Kingdom to Ontario?

    Most travelers choose London Heathrow - Ontario, Manchester - Ontario or London Gatwick - Ontario when deciding on the best route from United Kingdom to Ontario.

  • What does LHR to ONT mean?

    London Heathrow Airport is LHR and Ontario Airport is ONT. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Manchester Airport (MAN), Edinburgh Turnhouse Airport (EDI), London Gatwick Airport (LGW), Birmingham Airport (BHX), Glasgow Intl Airport (GLA).

  • Can I find deals for flights from United Kingdom to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your United Kingdom to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from United Kingdom to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter United Kingdom to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from United Kingdom to Ontario that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Ontario.

  • Can I find deals for business class flights from United Kingdom to Ontario?

    Yes. Cheapflights offers flight deals from United Kingdom to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from United Kingdom to Ontario that allow pets onboard?

    Many airlines flying from United Kingdom to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from United Kingdom to Ontario?

    Yes, you can often find last-minute deals on United Kingdom to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the United Kingdom to Ontario flight deals updated?

    The United Kingdom to Ontario flight deals you see on this page were last updated on 5/16.

See more FAQs

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Alternative routes for United Kingdom to Ontario
See prices for flight routes from nearby airports that may be better suited for you.

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Top airline flying from United Kingdom to Ontario

Discover the top airline that operate flights from United Kingdom to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$465Average$702FlexibilityNo cancel feeOn-time70%
Search British Airways flights
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United Kingdom to Chicago O'Hare Intl Airport flights

Search flights from United Kingdom to Ontario by cabin class

Find flights from United Kingdom to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Ontario?

Cheapflights makes it easy to find United Kingdom to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Ontario?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to Ontario for you. Better yet — we are completely free to use.

Can Cheapflights find flights from United Kingdom to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from United Kingdom to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Ontario become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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