Cheap Flights from London to Ontario, CA from $358

Return flight: Ontario – London
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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 $358, 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.

Find One-Way and Round-Trip London to Ontario Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $358 (one-way), $614 (round-trip).
Direct flights
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Best Flights from London to Ontario Today

Take a look at the list of non stop flights and flights with layovers from London to Ontario with the lowest price of $358. Take a look at the list of flights with layovers from London to Ontario from $358. There’re no direct flights. The fastest connecting flight – 13h 21m.
Price Departure Arrival Flight Duration Airline Flight
from $416
Find flight
08:20
London
Heathrow
 16:06
Ontario
Ontario Int.
 15h 46m
layover
2h 44m - Dallas
 British Airways
BA1504
BA5135
from $521
Find flight
15:10
London
Heathrow
 22:10
Ontario
Ontario Int.
 15h 0m
layover
1h 50m - Dallas
 British Airways
BA1573
BA2431
from $358
Find flight
14:00
London
Gatwick
 23:36+1 день
Ontario
Ontario Int.
 41h 36m
layover
13h 0m - Orlando
11h 43m - San Francisco
 Z0
Z0783
F91645
F92678
from $393
Find flight
11:35
London
Gatwick
 22:48
Ontario
Ontario Int.
 19h 13m
layover
1h 0m - Madrid
1h 38m - Dallas
 British Airways
BA7195
BA4299
BA2433
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 15, 2025
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 Arrival Flight Details Flight Duration Price
08:20 — 16:06
08:20 — 12:20 BA1504 British Airways
London — Dallas
2h 44m stop
22:55 — 23:59 BA5135 British Airways
Dallas — Ontario
15h 46m
including layover
Find flight
from$416
08:20 — 17:40
08:20 — 12:30 BA1504 British Airways
London — Dallas
4h 10m stop
17:30 — 18:36 BA2434 British Airways
Dallas — Ontario
17h 20m
including layover
Find flight
from$442
08:20 — 21:56
08:20 — 12:20 BA1504 British Airways
London — Dallas
8h 15m stop
21:00 — 22:14 BA2431 British Airways
Dallas — Ontario
21h 36m
including layover
Find flight
from$442
08:20 — 22:34
08:20 — 12:30 BA1504 British Airways
London — Dallas
9h 8m stop
22:41 — 23:43 BA2432 British Airways
Dallas — Ontario
22h 14m
including layover
Find flight
from$521
10:30 — 17:40
10:30 — 14:35 BA1590 British Airways
London — Dallas
1h 55m stop
18:00 — 19:01 BA2434 British Airways
Dallas — Ontario
15h 10m
including layover
Find flight
from$442
10:30 — 22:14
10:30 — 14:40 BA1590 British Airways
London — Dallas
6h 27m stop
21:48 — 22:48 BA2433 British Airways
Dallas — Ontario
19h 44m
including layover
Find flight
from$465
10:30 — 21:56
10:30 — 14:35 BA1590 British Airways
London — Dallas
6h stop
21:00 — 22:14 BA2431 British Airways
Dallas — Ontario
19h 26m
including layover
Find flight
from$478
10:30 — 22:34
10:30 — 14:35 BA1590 British Airways
London — Dallas
6h 53m stop
21:59 — 23:02 BA2432 British Airways
Dallas — Ontario
20h 4m
including layover
Find flight
from$521
10:30 — 23:54
10:30 — 14:35 BA1590 British Airways
London — Dallas
8h 15m stop
22:55 — 23:59 BA5135 British Airways
Dallas — Ontario
21h 24m
including layover
Find flight
from$521
12:00 — 21:56
12:00 — 16:05 BA1520 British Airways
London — Dallas
4h 30m stop
21:00 — 22:14 BA2431 British Airways
Dallas — Ontario
17h 56m
including layover
Find flight
from$459
12:00 — 22:34
12:00 — 16:15 BA1520 British Airways
London — Dallas
5h 23m stop
22:41 — 23:43 BA2432 British Airways
Dallas — Ontario
18h 34m
including layover
Find flight
from$521
15:10 — 22:14
15:10 — 19:20 BA1573 British Airways
London — Dallas
1h 47m stop
21:48 — 22:48 BA2433 British Airways
Dallas — Ontario
15h 4m
including layover
Find flight
from$465
15:10 — 22:10
15:10 — 19:20 BA1573 British Airways
London — Dallas
1h 50m stop
21:00 — 22:14 BA2431 British Airways
Dallas — Ontario
15h
including layover
Find flight
from$521
15:10 — 22:34
15:10 — 19:30 BA1573 British Airways
London — Dallas
2h 18m stop
22:41 — 23:43 BA2432 British Airways
Dallas — Ontario
15h 24m
including layover
Find flight
from$521
16:25 — 23:36
16:25 — 20:39 BA1530 British Airways
London — Dallas
1h 55m stop
22:41 — 23:43 BA2432 British Airways
Dallas — Ontario
15h 11m
including layover
Find flight
from$442
*Departure and arrival times - local. Updated on September 15, 2025

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 358 $), june (from 377 $), august (from 393 $).

The most expensive months are december (from 3 680 $), november (from 3 622 $), february (from 1 814 $).

What is the lowest airfare London to Ontario?

The cheapest plane ticket found by our users is $358. 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
$358
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Business class
?
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First class
?
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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 $ 870 . And the most expensive tickets are offered by Air Canada airline - from $ 5906.

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 $358.

  • W9 - Wizz Air UK
    from $870
    Find
  • VY - Vueling
    from $412
    Find
  • FI - Icelandair
    from $674
    Find
  • UA - United Airlines
    from $1024
    Find
  • LX - SWISS International Air Lines
    from $1632
    Find
  • Z0 - Z0
    from $358
    Find
  • SK - SAS
    from $636
    Find
  • OG - Air Onix
    from $668
    Find
  • IB - Iberia
    from $573
    Find
  • SN - Brussels Airlines
    from $1736
    Find
  • WS - WestJet
    from $712
    Find
  • KL - KLM
    from $580
    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 $859
    Find
  • London-Waterloo-QQW
    Find
  • Heathrow-LHR
    from $397
    Find
  • Luton-LTN
    from $1889
    Find
  • British Rail Terminal-ZLX
    Find
  • London Biggin Hill-BQH
    Find
  • Stansted-STN
    from $668
    Find
  • Gatwick-LGW
    from $358
    Find
  • Ebbsfleet International Rail St-XQE
    Find
  • Stratford International Rail St-XOF
    Find

Ontario airports

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

Airplanes

There are flights to Ontario from London by 28 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top International Destinations from London

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

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.

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