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Cheap flights from the United Kingdom to Ontario (ONT) from $446

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. 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 18 — May 251
From?
To?
Sat 5/18
Sat 5/25
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 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 2,633,403 searches. Data last updated May 13, 2024.
Consider these cheap Finnair flights we've found departing from United Kingdom to Ontario. Make sure to double check the flight details before booking.
Tue 9/173:15 pmLHR - ONT
1 stop14h 45mFinnair
Mon 9/2310:50 amONT - LHR
1 stop13h 10mFinnair
Deal found 5/12$516
Wed 8/214:25 pmLHR - ONT
1 stop15h 24mFinnair
Mon 9/210:35 pmONT - LHR
1 stop24h 55mFinnair
Deal found 5/12$561
Tue 6/1111:00 amLHR - ONT
1 stop15h 37mFinnair
Tue 6/1812:49 pmONT - LHR
2 stops15h 26mFinnair
Deal found 5/11$566
Mon 6/2412:00 pmLHR - ONT
1 stop14h 57mFinnair
Sun 6/3010:45 pmONT - LHR
1 stop24h 55mFinnair
Deal found 5/12$568
Wed 10/1610:30 amLHR - ONT
1 stop19h 12mFinnair
Wed 10/301:28 pmONT - LHR
1 stop15h 42mFinnair
Deal found 5/13$571
Wed 7/104:25 pmLHR - ONT
1 stop15h 24mFinnair
Fri 7/1910:36 pmONT - LHR
1 stop24h 54mFinnair
Deal found 5/12$599
Tue 6/254:25 pmLHR - ONT
1 stop15h 34mFinnair
Fri 7/510:36 pmONT - LHR
1 stop29h 34mFinnair
Deal found 5/12$605
Sat 6/2912:15 pmLHR - ONT
2 stops17h 25mFinnair
Wed 7/1010:36 pmONT - LHR
1 stop24h 54mFinnair
Deal found 5/12$606
Sat 6/298:10 amLHR - ONT
2 stops18h 12mFinnair
Wed 7/108:10 amONT - LHR
2 stops15h 40mFinnair
Deal found 5/12$607

Cheap Iberia flights from United Kingdom to Ontario

Explore cheap flight options specifically provided by Iberia 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 2,633,403 searches. Data last updated May 13, 2024.
Have a look at some of the cheapest available Iberia 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 9/184:25 pmLHR - ONT
1 stop15h 01mIberia
Mon 9/2310:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/13$537
Tue 10/14:25 pmLHR - ONT
1 stop15h 01mIberia
Wed 10/910:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/12$565
Tue 9/174:25 pmLHR - ONT
1 stop15h 01mIberia
Fri 10/410:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/13$576
Sun 7/1412:00 pmLHR - ONT
1 stop14h 50mIberia
Tue 10/810:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/12$600
Thu 9/194:25 pmLHR - ONT
1 stop15h 01mIberia
Thu 10/1010:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/12$602
Wed 9/111:05 pmLHR - ONT
1 stop18h 21mIberia
Wed 9/182:52 pmONT - LHR
1 stop13h 53mIberia
Deal found 5/12$604
Tue 6/44:25 pmLHR - ONT
1 stop15h 30mIberia
Tue 9/1710:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/12$619
Wed 6/1212:00 pmLHR - ONT
1 stop14h 57mIberia
Wed 6/192:44 pmONT - LHR
1 stop14h 01mIberia
Deal found 5/12$631
Tue 5/214:25 pmLHR - ONT
1 stop15h 31mIberia
Tue 5/282:50 pmONT - LHR
1 stop13h 25mIberia
Deal found 5/12$886

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 2,633,403 searches. Prices were last updated on May 13, 2024.
These are some of the most attractive deals on flights from United Kingdom to Ontario in 2024. Check back soon for alternative fares.
Tue 6/1110:40 amLGW - ONT
2 stops20h 19mAmerican Airlines
Tue 6/186:00 amONT - LGW
2 stops18h 35mAmerican Airlines
Deal found 5/11$555
Wed 6/1210:40 amLGW - ONT
2 stops20h 19mAmerican Airlines
Wed 6/1910:45 pmONT - LGW
2 stops23h 50mAmerican Airlines
Deal found 5/12$564
Tue 6/1111:00 amLHR - ONT
1 stop15h 37mFinnair
Tue 6/1812:49 pmONT - LHR
2 stops15h 26mFinnair
Deal found 5/11$566
Mon 6/2412:00 pmLHR - ONT
1 stop14h 57mFinnair
Sun 6/3010:45 pmONT - LHR
1 stop24h 55mFinnair
Deal found 5/12$568
Tue 5/219:00 pmLHR - ONT
2 stops29h 59mAmerican Airlines
Wed 5/2910:34 amONT - LHR
2 stops15h 56mAmerican Airlines
Deal found 5/13$572
Tue 5/2111:45 amLHR - ONT
2 stops18h 53mDelta
Wed 5/296:50 amONT - LHR
1 stop24h 00mDelta
Deal found 5/13$574
Tue 6/1112:00 pmLHR - ONT
1 stop14h 57mAmerican Airlines
Tue 6/1810:45 pmONT - LHR
1 stop29h 25mAmerican Airlines
Deal found 5/12$589
Wed 5/2211:00 amLHR - ONT
1 stop20h 43mKLM
Wed 6/52:13 pmONT - LHR
1 stop16h 37mKLM
Deal found 5/13$591
Sat 6/2912:20 pmLGW - ONT
2 stops19h 39mAmerican Airlines
Wed 7/106:10 amONT - LGW
2 stops18h 25mAmerican Airlines
Deal found 5/12$593

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 2,633,403 searches. Data last updated May 13, 2024.
These are some of the most attractive deals on flights from United Kingdom to Ontario in 2024. Check back soon for alternative fares.
Tue 11/1211:55 amLHR - ONT
1 stop13h 57mBritish Airways
Tue 11/1912:51 pmONT - LHR
1 stop12h 54mBritish Airways
Deal found 5/13$512
Tue 9/173:15 pmLHR - ONT
1 stop14h 45mFinnair
Mon 9/2310:50 amONT - LHR
1 stop13h 10mFinnair
Deal found 5/12$516
Wed 11/136:20 amLHR - ONT
2 stops24h 13mVirgin Atlantic
Sun 11/1712:45 pmONT - LHR
1 stop34h 30mVirgin Atlantic
Deal found 5/12$529
Wed 9/184:25 pmLHR - ONT
1 stop15h 01mIberia
Mon 9/2310:50 amONT - LHR
1 stop13h 10mIberia
Deal found 5/13$537
Wed 11/1310:45 amLHR - ONT
1 stop13h 27mDelta
Sun 11/1710:59 pmONT - LHR
1 stop24h 16mDelta
Deal found 5/12$538
Wed 9/1112:20 pmLGW - ONT
2 stops19h 06mAmerican Airlines
Sun 10/66:32 amONT - LGW
2 stops17h 38mAmerican Airlines
Deal found 5/12$540
Tue 11/1210:45 amLHR - ONT
1 stop13h 27mKLM
Tue 11/1912:45 pmONT - LHR
1 stop14h 25mKLM
Deal found 5/13$547
Sat 11/910:45 amLHR - ONT
1 stop13h 27mVirgin Atlantic
Mon 11/111:42 pmONT - LHR
1 stop12h 18mVirgin Atlantic
Deal found 5/12$555
Tue 6/1110:40 amLGW - ONT
2 stops20h 19mAmerican Airlines
Tue 6/186:00 amONT - LGW
2 stops18h 35mAmerican Airlines
Deal found 5/11$555

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 2,633,403 searches. Data last updated May 13, 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.
Tue 5/2110:55 amLHR - ONT
1 stop13h 41mVirgin Atlantic
Tue 5/281:20 pmONT - LHR
1 stop12h 40mVirgin Atlantic
Deal found 5/12$716
Wed 5/2211:00 amLHR - ONT
1 stop19h 29mBritish Airways
Wed 6/122:44 pmONT - LHR
1 stop14h 01mBritish Airways
Deal found 5/12$727
Sat 5/187:50 amMAN - ONT
2 stops20h 18mAmerican Airlines
Sat 5/252:50 pmONT - MAN
2 stops20h 05mAmerican Airlines
Deal found 5/11$759
Wed 5/2211:00 amLHR - ONT
1 stop13h 36mKLM
Wed 5/291:20 pmONT - LHR
1 stop12h 40mKLM
Deal found 5/12$789
Wed 5/2211:00 amLHR - ONT
1 stop19h 29mBritish Airways
Wed 6/52:44 pmONT - LHR
1 stop14h 01mBritish Airways
Deal found 5/12$790
Mon 5/2011:35 amLHR - ONT
1 stop16h 31mKLM
Wed 5/291:20 pmONT - LHR
1 stop12h 40mKLM
Deal found 5/12$840
Tue 5/214:25 pmLHR - ONT
1 stop15h 31mIberia
Tue 5/282:50 pmONT - LHR
1 stop13h 25mIberia
Deal found 5/12$886
Wed 5/2211:00 amLHR - ONT
1 stop19h 29mBritish Airways
Thu 5/3012:53 pmONT - LHR
1 stop16h 42mBritish Airways
Deal found 5/12$918
Mon 5/208:45 amLBA - ONT
2 stops17h 37mBritish Airways
Thu 6/612:49 pmONT - LBA
2 stops18h 41mBritish Airways
Deal found 5/12$967

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 2,633,403 searches. Data last updated May 13, 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 6/59:25 pmLHR - ONT
3 stops41h 43mMultiple Airlines
Deal found 5/12$446
Tue 9/107:40 amLHR - ONT
3 stops34h 27mMultiple Airlines
Deal found 5/12$494
Wed 6/51:45 pmLHR - ONT
2 stops25h 23mMultiple Airlines
Deal found 5/12$541
Tue 9/179:50 amLHR - ONT
3 stops32h 17mMultiple Airlines
Deal found 5/12$585
Wed 6/59:05 pmLGW - ONT
2 stops42h 03mMultiple Airlines
Deal found 5/12$600
Tue 9/1711:35 amLGW - ONT
3 stops30h 32mMultiple Airlines
Deal found 5/12$608
Wed 6/510:10 amLHR - ONT
1 stop28h 58mMultiple Airlines
Deal found 5/12$694
Tue 9/1710:30 amLGW - ONT
1 stop19h 51mJetBlue
Deal found 5/13$723
Wed 5/2910:30 amLGW - ONT
1 stop19h 39mJetBlue
Deal found 5/13$744

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 2,633,403 searches. Data last updated May 13, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$516 - $767

Route

Depart

Return

Price

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Tue 9/17

1 stop14h 45m

Ontario

Mon 9/23

1 stop13h 10m

$516

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/18

1 stop15h 01m

Ontario

Mon 9/23

1 stop13h 10m

$537

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Tue 9/17

1 stop15h 01m

Ontario

Thu 11/21

1 stop14h 42m

$538

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sat 11/9

1 stop13h 27m

Ontario

Mon 11/11

1 stop12h 18m

$555

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sat 11/2

1 stop16h 58m

Ontario

Tue 11/12

1 stop14h 25m

$582

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sat 6/29

1 stop19h 39m

Ontario

Wed 7/10

1 stop15h 38m

$603

Glasgow IntlOntario

GLA - ONT

GLAONT

Glasgow Intl

Thu 9/19

2 stops21h 13m

Ontario

Sat 9/28

2 stops19h 20m

$672

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 7/3

1 stop15h 28m

Ontario

Wed 7/10

2 stops14h 35m

$756

London GatwickOntario

LGW - ONT

LGWONT

London Gatwick

Sat 9/7

1 stop19h 51m

Ontario

Fri 9/20

1 stop24h 19m

$767

Flights are sorted by cheapest first

Deals found on 5/12

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 13, 2024.
To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about Finnair, Iberia and American 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
10,736 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Crew

8.6

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
10,736 reviews
Delta
8.0
Very good
10,736 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Crew

8.6

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
1,574 reviews
Delta
8.0
Very good
10,736 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Crew

8.6

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
1,378 reviews
Delta
8.0
Very good
10,736 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Crew

8.6

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.

Virgin Atlantic
7.7
Good
738 reviews
Delta
8.0
Very good
10,736 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Crew

8.6

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
4,497 reviews
Delta
8.0
Very good
10,736 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.4

Entertainment

8.0

Crew

8.6

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 Finnair for just $516, but on average you can expect to pay $568.

  • Are there last-minute flights available from United Kingdom to Ontario for under $800?

    There are currently 20+ open flights from United Kingdom to Ontario within the next 7 days for less than $800.

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

    Most travelers choose London Heathrow - Ontario, London Gatwick - Ontario or Manchester - 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 5/13.

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 2,633,403 searches. Data last updated May 13, 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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