Cheap Flights from Ontario, CA to London from $202

Return flight: London – Ontario

On Cheapflightsplus.com you will find 173 connecting flights from Ontario to London. You can compare airfare deals from 7 airlines and multiple travel sites from $202, book and save on cheap plane tickets and last minute offers. Also check out ONT-LON flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Ontario to London 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: $202 (one-way), $346 (round-trip).
Direct flights
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Full flight schedule will help you in detecting at what time planes fly from Ontario to London. 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
05:05 — 09:40
+1 day
05:05 — 08:24 UA1575 United Airlines
Ontario — Denver
9h 11m stop
17:35 — 09:40 UA27 United Airlines
Denver — London
20h 35m
including layover
Find flight
from$748
05:10 — 09:40
+1 day
05:10 — 08:29 UA2317 United Airlines
Ontario — Denver
9h 6m stop
17:35 — 09:40 UA27 United Airlines
Denver — London
20h 30m
including layover
Find flight
from$831
06:05 — 06:20
+1 day
12:53 — 17:50 BA5110 British Airways
Ontario — Dallas
4h 13m stop
15:20 — 06:20 BA1589 British Airways
Dallas — London
16h 15m
including layover
Find flight
from$411
06:05 — 07:20
+1 day
12:53 — 17:50 BA5110 British Airways
Ontario — Dallas
5h 13m stop
16:20 — 07:20 BA1505 British Airways
Dallas — London
17h 15m
including layover
Find flight
from$411
09:02 — 09:40
+1 day
08:56 — 13:54 F91406 Frontier Airlines
Ontario — Dallas
4h 29m stop
18:30 — 09:40 BA192 British Airways
Dallas — London
16h 38m
including layover
Find flight
from$596
10:39 — 12:00
+1 day
10:35 — 12:08 UA4639 United Airlines
Ontario — San Francisco
5h 5m stop
17:25 — 12:00 UA930 United Airlines
San Francisco — London
17h 21m
including layover
Find flight
from$831
11:04 — 09:40
+1 day
10:43 — 15:38 BA5109 British Airways
Ontario — Dallas
2h 35m stop
18:30 — 09:40 BA192 British Airways
Dallas — London
14h 36m
including layover
Find flight
from$411
11:46 — 10:35
+1 day
17:26 — 18:36 F92232 Frontier Airlines
Ontario — Las Vegas
3h 49m stop
16:45 — 10:35 Z0778 Z0
Las Vegas — London
14h 49m
including layover
Find flight
from$289
14:01 — 12:10
+1 day
14:01 — 16:14 F93335 Frontier Airlines
Ontario — Portland
2h 16m stop
18:30 — 12:10 BA266 British Airways
Portland — London
14h 9m
including layover
Find flight
from$581
15:09 — 12:05
+1 day
14:53 — 19:48 BA5111 British Airways
Ontario — Dallas
55m stop
21:00 — 12:05 BA1521 British Airways
Dallas — London
12h 56m
including layover
Find flight
from$460
15:09 — 07:20
+2 days
14:53 — 19:48 BA5111 British Airways
Ontario — Dallas
20h 15m stop
16:20 — 07:20 BA1505 British Airways
Dallas — London
32h 11m
including layover
Find flight
from$484
16:06 — 12:15
+2 days
16:06 — 18:59 AS1119 Alaska Airlines
Ontario — Seattle
23h 51m stop
18:50 — 12:15 IB3506 Iberia
Seattle — London
36h 9m
including layover
Find flight
from$535
16:25 — 13:20
+1 day
16:25 — 18:49 BA6797 British Airways
Ontario — Phoenix
1h 49m stop
20:30 — 13:20 BA288 British Airways
Phoenix — London
12h 55m
including layover
Find flight
from$411
17:30 — 14:55
+1 day
15:56 — 17:09 F92232 Frontier Airlines
Ontario — Las Vegas
2h 12m stop
20:55 — 14:55 IB3617 Iberia
Las Vegas — London
13h 25m
including layover
Find flight
from$783
22:45 — 16:55
+2 days
22:45 — 05:30 CI23 China Airlines
Ontario — Taipei
2h 50m stop
08:30 — 17:05 CI81 China Airlines
Taipei — London
34h 10m
including layover
Find flight
from$5223
07:45 — 10:50
+1 day
06:45 — 10:10 F91262 Frontier Airlines
Ontario — Denver
4h 30m stop
15:40 — 06:05 FI670 Icelandair
Denver — Reykjavik
1h 30m stop
07:35 — 10:50 FI450 Icelandair
Reykjavik — London
19h 5m
including layover
Find flight
from$273
07:45 — 10:55
+1 day
06:45 — 10:10 F91262 Frontier Airlines
Ontario — Denver
4h 30m stop
15:40 — 06:05 FI670 Icelandair
Denver — Reykjavik
1h 35m stop
07:40 — 10:55 FI470 Icelandair
Reykjavik — London
19h 10m
including layover
Find flight
from$273
08:04 — 12:50
+2 days
08:04 — 09:16 F91358 Frontier Airlines
Ontario — Las Vegas
9h 14m stop
18:30 — 22:25 WS1585 WestJet
Las Vegas — Calgary
22h 45m stop
21:10 — 12:50 WS18 WestJet
Calgary — London
44h 46m
including layover
Find flight
from$286
12:34 — 10:00
+2 days
12:34 — 13:46 F92232 Frontier Airlines
Ontario — Las Vegas
9h 54m stop
23:40 — 07:10 F91876 Frontier Airlines
Las Vegas — Orlando
13h 45m stop
20:55 — 10:00 Z0784 Z0
Orlando — London
37h 26m
including layover
Find flight
from$202
12:34 — 12:50
+2 days
12:34 — 13:46 F92232 Frontier Airlines
Ontario — Las Vegas
23h 34m stop
13:20 — 17:20 WS1401 WestJet
Las Vegas — Calgary
3h 50m stop
21:10 — 12:50 WS18 WestJet
Calgary — London
40h 16m
including layover
Find flight
from$278
19:59 — 06:00
+2 days
19:58 — 21:04 F94206 Frontier Airlines
Ontario — Las Vegas
1h 27m stop
22:37 — 06:30 F93238 Frontier Airlines
Las Vegas — New York
11h 46m stop
18:15 — 06:00 Z0702 Z0
New York — London
26h 1m
including layover
Find flight
from$248
19:59 — 06:25
+2 days
22:58 — 23:59 F94206 Frontier Airlines
Ontario — Las Vegas
1h 27m stop
22:34 — 06:30 F93238 Frontier Airlines
Las Vegas — New York
12h 1m stop
18:30 — 06:25 VS4 Virgin Atlantic Airways
New York — London
26h 26m
including layover
Find flight
from$290
20:11 — 10:00
+2 days
20:11 — 23:33 F91500 Frontier Airlines
Ontario — Denver
1h 17m stop
00:50 — 06:36 F91734 Frontier Airlines
Denver — Orlando
14h 19m stop
20:55 — 10:00 Z0784 Z0
Orlando — London
29h 49m
including layover
Find flight
from$279
20:35 — 12:50
+3 days
20:35 — 21:54 F94206 Frontier Airlines
Ontario — Las Vegas
20h 36m stop
18:30 — 22:25 WS1585 WestJet
Las Vegas — Calgary
22h 45m stop
21:10 — 12:50 WS18 WestJet
Calgary — London
56h 15m
including layover
Find flight
from$312
*Departure and arrival times - local. Updated on December 22, 2024

Flight Information

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

Distance between Ontario and London is 8723 miles. Time difference between the cities is 8h. Airplanes depart 00:58 to 22:59 from 2 Ontario airports and arrive 00:58 to 22:59 to 10 London airports. Average flight time is 22h 50m.

  • The fastest flight 12h 55m
  • Average flight time 22h 50m
  • The earliest flight 00:58
  • The latest flight 22:59
  • Distance 5421 ml

The cheapest months to travel to London are january (from 202 $), november (from 212 $), february (from 248 $).

The most expensive months are december (from 435 $), february (from 248 $), november (from 212 $).

What is the lowest airfare Ontario to London?

The cheapest plane ticket found by our users is $202. This airfare is for economy class on one-way F92232 flight by Frontier Airlines for January 22, 2025 which leaves Ontario Int. in Ontario at 12:34 am and arrives at London Gatwick at 10:00.

Economy class
$202
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Business class
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First class
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Popular Airlines on the Route

The flight Ontario — London is served by 7 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Air Canada - 30 departures per week at the price of from $ 471 . And the most expensive tickets are offered by China Airlines airline - from $ 5223.

Direct flights

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

Connecting Flights

There are 173 flights with layovers on the route. The fastest connecting flight is BA6797 by British Airways takes 12h 55m and the cheapest is F92232 by Frontier Airlines for $202.

  • AS - Alaska Airlines
    from $329
    Find
  • AC - Air Canada
    from $471
    Find
  • F9 - Frontier Airlines
    from $202
    Find
  • CI - China Airlines
    from $5223
    Find
  • Y4 - Volaris
    from $518
    Find
  • UA - United Airlines
    from $748
    Find
  • BA - British Airways
    from $411
    Find
See more connecting flights

Airports

You can fly from Ontario to London from 2 airports (Ontario Int., International Heliport).

Ontario airports

  • Ontario Int.-ONT
    from $202
    Find
  • International Heliport-JIO
    Find

London airports

  • London City-LCY
    Find
  • London-Waterloo-QQW
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  • Heathrow-LHR
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  • Luton-LTN
    Find
  • British Rail Terminal-ZLX
    Find
  • London Biggin Hill-BQH
    Find
  • Stansted-STN
    Find
  • Gatwick-LGW
    Find
  • Ebbsfleet International Rail St-XQE
    Find
  • Stratford International Rail St-XOF
    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.

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