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Ontario International Airport to London flight
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Cheap Flights from Ontario International Airport to London

Search for flights from Ontario International Airport to London and check out affordable one-way and round-trip options.

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • ONT00:59
        25h 1m
        2 stops
        LGW10:00
        Ontario - London|Tue, May 7|Frontier Airlines
        $223$317
        28% OFF
        28% OFF
        $317$223
      • ONT00:49
        27h 16m
        2 stops
        LHR12:05
        Ontario - London|Tue, May 21|Frontier Airlines
        $231$317
        27% OFF
        27% OFF
        $317$231
      • ONT10:40
        36h 20m
        2 stops
        LGW07:00
        Ontario - London|Fri, May 10|Frontier Airlines
        $237$317
        25% OFF
        25% OFF
        $317$237
      • ONT07:58
        18h 22m
        2 stops
        LHR10:20
        Ontario - London|Wed, May 1|Frontier Airlines
        $237
        $237
      • ONT00:49
        46h 11m
        2 stops
        LGW07:00
        Ontario - London|Fri, May 17|Frontier Airlines
        $243
        $243
      • ONT07:31
        39h 29m
        2 stops
        LGW07:00
        Ontario - London|Sun, May 12|Frontier Airlines
        $243
        $243
      • ONT00:49
        46h 11m
        2 stops
        LGW07:00
        Ontario - London|Fri, May 24|Frontier Airlines
        $252
        $252
      • ONT08:51
        37h 29m
        2 stops
        LGW06:20
        Ontario - London|Thu, May 9|Frontier Airlines
        $254
        $254
      • ONT07:36
        44h 29m
        2 stops
        LHR12:05
        Ontario - London|Mon, May 20|Frontier Airlines
        $254
        $254
      • ONT00:59
        25h 1m
        2 stops
        LGW10:00
        Ontario - London|Wed, May 15|Frontier Airlines
        $254
        $254
      • ONT13:00
        3h 5m
        Direct
        LON14:00
        Los Angeles - London|Sat, May 4|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Ontario International Airport to London

See which airlines fly from Ontario International Airport to London. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From $223
Alaska Airlines
From $296
Jetblue Airways
From $311
Southwest Airlines
From $337
United Airlines
From $365
Delta Air Lines
From $374
American Airlines
From $409
Iberia
From $421
Virgin Atlantic
From $430
KLM
From $454
ANA airlines
Find more flights and airlines

Flight Info of Flights from Ontario International Airport to London

Cheapest round-trip ticket price

$411

Cheapest nonstop flight price

$251

Off-season for travel

April

Peak season for travel

October

FAQs for Ontario International Airport to London Flights

  • What is the transportation method from the main airport to downtown in London?

    • The distance from London Gatwick Airport to downtown is about 39km. It takes about 50 minutes by taxi.
    • The distance from London Heathrow Airport to downtown is about 23km. It takes about 40 minutes by taxi.
    • The distance from London Luton Airport to downtown is about 44km. It takes about 1 hour by taxi.

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