Cheap Flights from Ontario, CA to London from $258
On Cheapflightsplus.com you will find 970 connecting flights from Ontario to London. You can compare airfare deals from 13 airlines and multiple travel sites from $258, 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.
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 00:08 to 23:59 from 2 Ontario airports and arrive 00:08 to 23:59 to 10 London airports. Average flight time is 27h 40m.
- The fastest flight 11h 41m
- Average flight time 27h 40m
- The earliest flight 00:08
- The latest flight 23:59
- Distance 5421 ml
Best Flights from Ontario to London Today
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $392 | 15:00 Ontario Ontario Int. | 12:30+1 день London Heathrow | 13h 30m layover 1h 15m - Dallas | British Airways | BA5111 BA1522 |
| from $409 | 13:15 Ontario Ontario Int. | 09:40+1 день London Heathrow | 12h 25m layover 1h 3m - Denver | United Airlines | UA1417 UA27 |
| from $258 | 17:21 Ontario Ontario Int. | 10:00+2 дня London Gatwick | 32h 39m layover 3h 41m - Denver 14h 30m - Orlando | Frontier Airlines | F92908 F91734 Z0784 |
| from $309 | 17:26 Ontario Ontario Int. | 06:20+2 дня London Gatwick | 28h 54m layover 2h 47m - Las Vegas 12h 50m - New York | Frontier Airlines | F91358 F93238 Z0702 |
The cheapest months to travel to London are july (from 258 $), october (from 309 $), november (from 309 $).
The most expensive months are february (from 545 $), december (from 540 $), january (from 486 $).
What is the lowest airfare Ontario to London?
The cheapest plane ticket found by our users is $258. This airfare is for economy class on one-way F92908 flight by Frontier Airlines for July 4, 2025 which leaves Ontario Int. in Ontario at 17:21 am and arrives at London Gatwick at 10:00.
Flight Schedule Ontario (California) to London
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Popular Airlines on the Route
The flight Ontario — London is served by 13 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by KLM - 1 departures per week at the price of from $ 969 . And the most expensive tickets are offered by China Airlines airline - from $ 5203.
Direct flights
There’re no direct flights on this route. Try flights with stops.
Connecting Flights
There are 970 flights with layovers on the route. The fastest connecting flight is BA6795 by British Airways takes 11h 41m and the cheapest is F92908 by Frontier Airlines for $258.
- KL - KLMfrom $969Find
- AC - Air Canadafrom $385Find
- CI - China Airlinesfrom $4997Find
- UA - United Airlinesfrom $409Find
- JX - Jambojetfrom $4869Find
- AS - Alaska Airlinesfrom $324Find
- F9 - Frontier Airlinesfrom $258Find
- AV - Aviancafrom $867Find
- HA - Hawaiian Airlinesfrom $332Find
- IB - Iberiafrom $675Find
- Y4 - Volarisfrom $530Find
- VS - Virgin Atlantic Airwaysfrom $511Find
Airports
You can fly from Ontario to London from 2 airports (Ontario Int., International Heliport).
Ontario airports
- Ontario Int.-ONTfrom $258Find
- International Heliport-JIOFind
London airports
- London City-LCYFind
- London-Waterloo-QQWFind
- Heathrow-LHRFind
- Luton-LTNFind
- British Rail Terminal-ZLXFind
- London Biggin Hill-BQHFind
- Stansted-STNFind
- Gatwick-LGWFind
- Ebbsfleet International Rail St-XQEFind
- Stratford International Rail St-XOFFind
Airplanes
There are flights to London from Ontario by 13 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Ontario
You may also consider searching for discounted plane tickets to some other popular places from Ontario within United States.
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Top International Destinations from Ontario
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.
- from $62Find
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- from $70Find
- from $74Find
How to book a plane 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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