Cheap Flights from London to Ontario, CA from $366

Return flight: Ontario – London

On Cheapflightsplus.com you will find 770 connecting flights from London to Ontario. You can compare airfare deals from 28 airlines and multiple travel sites from $366, book and save on cheap plane tickets and last minute offers. Also check out LON-ONT flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from London to Ontario depends on and how to choose the most interesting flight option for you.

Distance between London and Ontario is 8723 miles. Time difference between the cities is 8h. Airplanes depart 06:00 to 22:30 from 10 London airports and arrive 06:00 to 22:30 to 2 Ontario airports. Average flight time is 26h 36m.

  • The fastest flight 13h 21m
  • Average flight time 26h 36m
  • The earliest flight 06:00
  • The latest flight 22:30
  • Distance 5421 ml

The cheapest months to travel to Ontario are may (from 366 $), june (from 385 $), august (from 402 $).

The most expensive months are december (from 3 759 $), november (from 3 700 $), february (from 1 853 $).

What is the lowest airfare London to Ontario?

The cheapest plane ticket found by our users is $366. This airfare is for economy class on one-way Z0783 flight by Z0 for May 29, 2025 which leaves Gatwick in London at 14:00 am and arrives at Ontario Ontario Int. at 23:36.

Economy class
$366
Find
Business class
?
Find
First class
?
Find

Flight Schedule London to Ontario (California)

08:20 — 16:06
15h 46m flight time
Find flight
from$425
08:20 — 12:20 London — Dallas
BA1504 British Airways
2h 44m stop
22:55 — 23:59 Dallas — Ontario
BA5135 British Airways
08:20 — 17:40
17h 20m flight time
Find flight
from$425
08:20 — 12:30 London — Dallas
BA1504 British Airways
4h 10m stop
17:30 — 18:36 Dallas — Ontario
BA2434 British Airways
08:20 — 21:56
21h 36m flight time
Find flight
from$451
08:20 — 12:20 London — Dallas
BA1504 British Airways
8h 15m stop
21:00 — 22:14 Dallas — Ontario
BA2431 British Airways
08:20 — 22:34
22h 14m flight time
Find flight
from$532
08:20 — 12:30 London — Dallas
BA1504 British Airways
9h 8m stop
22:41 — 23:43 Dallas — Ontario
BA2432 British Airways
10:30 — 17:40
15h 10m flight time
Find flight
from$425
10:30 — 14:35 London — Dallas
BA1590 British Airways
1h 55m stop
18:00 — 19:01 Dallas — Ontario
BA2434 British Airways
10:30 — 22:14
19h 44m flight time
Find flight
from$475
10:30 — 14:40 London — Dallas
BA1590 British Airways
6h 27m stop
21:48 — 22:48 Dallas — Ontario
BA2433 British Airways
10:30 — 21:56
19h 26m flight time
Find flight
from$488
10:30 — 14:35 London — Dallas
BA1590 British Airways
6h stop
21:00 — 22:14 Dallas — Ontario
BA2431 British Airways
10:30 — 22:34
20h 4m flight time
Find flight
from$532
10:30 — 14:35 London — Dallas
BA1590 British Airways
6h 53m stop
21:59 — 23:02 Dallas — Ontario
BA2432 British Airways
10:30 — 23:54
21h 24m flight time
Find flight
from$532
10:30 — 14:35 London — Dallas
BA1590 British Airways
8h 15m stop
22:55 — 23:59 Dallas — Ontario
BA5135 British Airways
11:15 — 16:36
13h 21m flight time
Find flight
from$425
11:15 — 14:20 London — Phoenix
BA1526 British Airways
1h stop
17:10 — 18:23 Phoenix — Ontario
BA6916 British Airways
12:00 — 21:56
17h 56m flight time
Find flight
from$469
12:00 — 16:05 London — Dallas
BA1520 British Airways
4h 30m stop
21:00 — 22:14 Dallas — Ontario
BA2431 British Airways
12:00 — 22:34
18h 34m flight time
Find flight
from$532
12:00 — 16:15 London — Dallas
BA1520 British Airways
5h 23m stop
22:41 — 23:43 Dallas — Ontario
BA2432 British Airways
15:10 — 22:14
15h 4m flight time
Find flight
from$475
15:10 — 19:20 London — Dallas
BA1573 British Airways
1h 47m stop
21:48 — 22:48 Dallas — Ontario
BA2433 British Airways
15:10 — 22:10
15h flight time
Find flight
from$532
15:10 — 19:20 London — Dallas
BA1573 British Airways
1h 50m stop
21:00 — 22:14 Dallas — Ontario
BA2431 British Airways
16:25 — 23:36
15h 11m flight time
Find flight
from$451
16:25 — 20:39 London — Dallas
BA1530 British Airways
1h 55m stop
22:41 — 23:43 Dallas — Ontario
BA2432 British Airways
Full flight schedule will help you in detecting at what time planes fly from London to Ontario. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 16, 2025.

Popular Airlines on the Route

The flight London — Ontario is served by 28 regular airlines and 5 low-cost airlines. Most of the flights on this route are operated by Wizz Air UK - 8 departures per week at the price of from $ 889 . And the most expensive tickets are offered by Air Canada airline - from $ 6033.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 770 flights with layovers on the route. The fastest connecting flight is BA1526 by British Airways takes 13h 21m and the cheapest is Z0783 by Z0 for $366.

  • W9 - Wizz Air UK
    from $889
    Find
  • VY - Vueling
    from $421
    Find
  • FI - Icelandair
    from $689
    Find
  • UA - United Airlines
    from $1046
    Find
  • LX - SWISS International Air Lines
    from $1667
    Find
  • Z0 - Z0
    from $366
    Find
  • SK - SAS
    from $650
    Find
  • OG - Air Onix
    from $683
    Find
  • IB - Iberia
    from $586
    Find
  • SN - Brussels Airlines
    from $1773
    Find
  • WS - WestJet
    from $727
    Find
  • KL - KLM
    from $593
    Find
See more connecting flights

Airports

You can fly from London to Ontario from 10 airports (London City, London-Waterloo, Heathrow, Luton, British Rail Terminal, London Biggin Hill, Stansted, Gatwick, Ebbsfleet International Rail St, Stratford International Rail St).

London airports

  • London City-LCY
    from $877
    Find
  • London-Waterloo-QQW
    Find
  • Heathrow-LHR
    from $405
    Find
  • Luton-LTN
    from $1930
    Find
  • British Rail Terminal-ZLX
    Find
  • London Biggin Hill-BQH
    Find
  • Stansted-STN
    from $683
    Find
  • Gatwick-LGW
    from $366
    Find
  • Ebbsfleet International Rail St-XQE
    Find
  • Stratford International Rail St-XOF
    Find

Ontario airports

  • Ontario Int.-ONT
    Find
  • International Heliport-JIO
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

Back