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Cheap flights from Ontario (ONT) to the United Kingdom from $349

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 9/4. 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.
ONT — LHR
jun. 11 — jun. 181
From?
To?
mar. 6/11
mar. 6/18
1 adult, Economy
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How far in advance should I book a flight from Ontario to United Kingdom?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 15 days in advance, which can save you up to 27% on flights from Ontario to United Kingdom compared to booking the week you need them. Waiting 15 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $760. For sooner than that we have options available in the next 3 days from $1,004.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, October can be a great choice for travel to United Kingdom. Flights to United Kingdom from Ontario in October are about $714 on average during October, but can be found for as low as $433.

What is the cheapest time of day to fly from ONT to GB?

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

Cheap Ontario to United Kingdom flights in June & July 2024

Find cheap flight options from Ontario to United Kingdom specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on junio 6, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to United Kingdom in 2024. Check back in a little while for more flight options.
mié. 7/3110:48 amONT - LHR
1 stop13h 12mIberia
mar. 8/2712:00 pmLHR - ONT
1 stop14h 48mIberia
Deal found 6/5$590
dom. 7/71:30 pmONT - LHR
1 stop14h 50mUnited Airlines
vie. 8/302:50 pmLHR - ONT
1 stop14h 12mUnited Airlines
Deal found 6/5$630
mié. 7/311:45 pmONT - LHR
2 stops14h 35mUnited Airlines
jue. 8/222:50 pmLHR - ONT
1 stop14h 12mUnited Airlines
Deal found 6/4$635
lun. 7/81:30 pmONT - LHR
1 stop14h 50mUnited Airlines
mar. 10/84:15 pmLHR - ONT
1 stop14h 41mUnited Airlines
Deal found 6/4$638
lun. 7/2911:47 pmONT - EDI
1 stop25h 43mJetBlue
mié. 8/1412:20 pmEDI - ONT
1 stop18h 12mJetBlue
Deal found 6/6$642
vie. 7/262:47 pmONT - LHR
1 stop13h 58mBritish Airways
lun. 8/197:35 pmLHR - ONT
2 stops31h 13mBritish Airways
Deal found 6/6$670
mié. 7/101:45 pmONT - LHR
2 stops14h 35mUnited Airlines
lun. 9/21:40 pmLHR - ONT
1 stop15h 51mUnited Airlines
Deal found 6/6$679
mié. 7/101:30 pmONT - LHR
1 stop14h 50mUnited Airlines
dom. 9/12:50 pmLHR - ONT
1 stop14h 12mUnited Airlines
Deal found 6/5$688
jue. 7/251:45 pmONT - LHR
2 stops14h 35mUnited Airlines
mar. 8/272:50 pmLHR - ONT
1 stop14h 12mUnited Airlines
Deal found 6/6$698

Ontario to United Kingdom 2024 flight deals

Discover exclusive flight deals for travel between Ontario and United Kingdom in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to United Kingdom in 2024. Check back in a little while for more flight options.
lun. 11/183:01 pmONT - LHR
1 stop13h 04mBritish Airways
jue. 11/2811:25 amLHR - ONT
2 stops20h 42mBritish Airways
Deal found 6/6$546
mar. 10/15:53 pmONT - LHR
1 stop12h 57mDelta
mar. 10/86:15 amLHR - ONT
2 stops18h 53mDelta
Deal found 6/5$556
mar. 10/15:00 pmONT - LHR
2 stops19h 10mDelta
mar. 10/86:15 amLHR - ONT
2 stops18h 53mDelta
Deal found 6/5$560
mar. 10/17:45 amONT - LHR
1 stop18h 05mVirgin Atlantic
mar. 10/1512:45 pmLHR - ONT
1 stop17h 44mVirgin Atlantic
Deal found 6/5$563
mié. 10/910:50 amONT - LHR
1 stop13h 10mIberia
mié. 10/234:25 pmLHR - ONT
1 stop15h 01mIberia
Deal found 6/5$565
mar. 10/2911:30 amONT - LHR
1 stop19h 00mDelta
vie. 11/89:10 amLHR - ONT
2 stops21h 32mDelta
Deal found 6/5$567
mar. 11/57:00 amONT - LHR
2 stops19h 30mDelta
mar. 11/2612:30 pmLHR - ONT
2 stops19h 21mDelta
Deal found 6/5$568
mar. 9/242:44 pmONT - EDI
2 stops17h 51mBritish Airways
lun. 9/309:00 pmEDI - ONT
2 stops30h 44mBritish Airways
Deal found 6/5$584
mar. 10/15:15 amONT - LHR
2 stops17h 20mAir Canada
mar. 10/152:10 pmLHR - ONT
2 stops40h 46mAir Canada
Deal found 6/5$587

Ontario to United Kingdom flights leaving soon

Find last-minute flight options from Ontario to United Kingdom 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 3,050,429 searches. Data last updated junio 6, 2024.
Have a look at some of the flights available from Ontario to United Kingdom departing last-minute. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
mié. 6/121:29 pmONT - LHR
1 stop14h 51mUnited Airlines
mié. 6/194:15 pmLHR - ONT
1 stop14h 12mUnited Airlines
Deal found 6/5$844
mié. 6/121:25 pmONT - LHR
1 stop12h 35mKLM
mié. 6/1911:00 amLHR - ONT
1 stop13h 16mKLM
Deal found 6/6$846
mié. 6/121:29 pmONT - LHR
1 stop14h 51mUnited Airlines
mié. 6/191:40 pmLHR - ONT
1 stop15h 34mUnited Airlines
Deal found 6/5$907
vie. 6/145:15 amONT - EDI
2 stops18h 50mUnited Airlines
mar. 6/189:40 amEDI - ONT
2 stops19h 34mUnited Airlines
Deal found 6/6$972
jue. 6/131:29 pmONT - LHR
1 stop14h 51mUnited Airlines
dom. 6/164:15 pmLHR - ONT
1 stop14h 12mUnited Airlines
Deal found 6/6$997
jue. 6/136:00 amONT - LGW
2 stops18h 35mAmerican Airlines
jue. 9/2612:20 pmLGW - ONT
2 stops19h 36mAmerican Airlines
Deal found 6/4$1,039
jue. 6/131:29 pmONT - LHR
1 stop14h 51mUnited Airlines
mar. 6/181:40 pmLHR - ONT
1 stop15h 34mUnited Airlines
Deal found 6/5$1,070
vie. 6/146:25 pmONT - LHR
1 stop33h 55mUnited Airlines
jue. 6/2710:25 amLHR - ONT
1 stop20h 20mUnited Airlines
Deal found 6/5$1,093
mar. 6/116:00 amONT - LHR
1 stop17h 40mUnited Airlines
dom. 6/1611:05 amLHR - ONT
1 stop17h 43mUnited Airlines
Deal found 6/4$1,104

One-way flights to United Kingdom from Ontario

Search for one-way flight options from Ontario to United Kingdom. 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 3,050,429 searches. Data last updated junio 6, 2024.
Take a look at some of the one-way flights we've detected from Ontario to United Kingdom. Those needing a return flight from Ontario to United Kingdom can use the search form above.
mié. 9/46:57 amONT - LGW
2 stops22h 33mMultiple Airlines
Deal found 6/6$349
mié. 10/22:44 pmONT - LHR
1 stop14h 01mIberia
Deal found 6/4$399
mié. 10/210:50 amONT - LHR
1 stop13h 10mAmerican Airlines
Deal found 6/6$404
mié. 10/234:45 pmONT - LHR
1 stop12h 50mBritish Airways
Deal found 6/5$408
mié. 10/238:41 amONT - LGW
2 stops15h 29mMultiple Airlines
Deal found 6/6$408
lun. 7/81:30 pmONT - LHR
1 stop14h 50mUnited Airlines
Deal found 6/5$413
lun. 7/81:45 pmONT - LHR
2 stops14h 35mUnited Airlines
Deal found 6/5$418
sáb. 7/201:45 pmONT - LHR
2 stops35h 55mUnited Airlines
Deal found 6/5$420
mar. 10/110:50 amONT - LHR
2 stops17h 50mBritish Airways
Deal found 6/6$422

Find flights from Ontario to United Kingdom within your budget

Customize your flight search to find flights from Ontario to United Kingdom 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 3,050,429 searches. Data last updated junio 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$546 - $609

Route

Depart

Return

Price

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

lun. 11/18

1 stop13h 04m

London Heathrow

jue. 11/28

2 stops20h 42m

$546

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mar. 10/1

1 stop12h 57m

London Heathrow

mar. 10/8

2 stops18h 53m

$556

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mar. 10/1

1 stop18h 05m

London Heathrow

mar. 10/15

1 stop17h 44m

$563

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mié. 10/9

1 stop13h 10m

London Heathrow

mié. 10/23

1 stop15h 01m

$565

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mar. 10/1

2 stops17h 20m

London Heathrow

mar. 10/15

2 stops40h 46m

$587

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mié. 8/21

1 stop16h 19m

London Heathrow

vie. 9/13

1 stop15h 44m

$588

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mar. 11/5

1 stop14h 05m

London Heathrow

jue. 11/14

1 stop16h 36m

$596

OntarioEdinburgh Turnhouse

ONT - EDI

ONTEDI

Ontario

dom. 9/22

1 stop29h 35m

Edinburgh Turnhouse

mié. 10/9

2 stops18h 16m

$601

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

mié. 10/16

2 stops17h 15m

London Heathrow

vie. 10/25

2 stops21h 16m

$609

Flights are sorted by cheapest first

Deals found on 6/6

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

Best time to book a flight from Ontario to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated junio 6, 2024.
Get a feel of what it's like to fly with Virgin Atlantic, Air Canada and American Airlines from Ontario to United Kingdom by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,368 reviews

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta
8.0
Very good
10,368 reviews
Delta
8.0
Very good
10,368 reviews

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

KLM
7.9
Good
1,489 reviews
Delta
8.0
Very good
10,368 reviews

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

JetBlue
7.6
Good
4,316 reviews
Delta
8.0
Very good
10,368 reviews

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Virgin Atlantic
7.6
Good
718 reviews
Delta
8.0
Very good
10,368 reviews

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Air France
7.5
Good
1,720 reviews
Delta
8.0
Very good
10,368 reviews

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to United Kingdom. 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 from for flights from Ontario to United Kingdom?

    If you book a flight to United Kingdom from Ontario, you will be flying from 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 Ontario to United Kingdom for under $600 on Cheapflights?

    Yes, there are multiple flights from Ontario to United Kingdom for under $600. The cheapest flight booked recently is on British Airways for just $546, but on average you can expect to pay $583.

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

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

  • What are the cheapest airlines to fly from Ontario to United Kingdom one-way?

    The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as $399. However, be on the lookout for offers from American Airlines and British Airways, as they are both options that can get you from Ontario to United Kingdom for a low price.

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

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

  • What does ONT to LHR mean?

    ONT and LHR are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ONT to LHR refers to a flight route from Ontario Airport to London Heathrow Airport. Manchester Airport (MAN), Edinburgh Turnhouse Airport (EDI), London Gatwick Airport (LGW), Birmingham Airport (BHX), Glasgow Intl Airport (GLA) are other airports near this flight route and their unique identifiers/IATA codes.

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

    The amount of baggage you can bring on your Ontario to United Kingdom 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 Ontario to United Kingdom with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to United Kingdom 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 Ontario to United Kingdom that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to United Kingdom 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 Ontario to United Kingdom that allow pets onboard?

    Many airlines flying from Ontario to United Kingdom 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 Ontario to United Kingdom?

    Yes, you can often find last-minute deals on Ontario to United Kingdom 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 Ontario to United Kingdom flight deals updated?

    The Ontario to United Kingdom flight deals you see on this page were last updated on 6/6.

  • What are the most popular airlines that fly from Ontario to United Kingdom?

    Before booking your flight from Ontario to United Kingdom check out the most popular airlines for this route: American Airlines, British Airways or Delta.

  • What is the cheapest month to book a flight from Ontario to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Ontario to United Kingdom (average of $653). Flying from Ontario to United Kingdom in June is currently the most expensive (average of $1,102). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 6 airlines flying from Ontario to United Kingdom

Discover the top 6 airlines that operate flights from Ontario to United Kingdom. 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 3,050,429 searches. Data last updated junio 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$482Average$954FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$591Average$666FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$597Average$983FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$598Average$912FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$629Average$718FlexibilityNo cancel feeOn-time69%
IberiaCheapest$642Average$805FlexibilityNo cancel feeOn-time77%
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Ontario to Gaborone flights

Search flights from Ontario to United Kingdom by cabin class

Find flights from Ontario to United Kingdom, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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