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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.

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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 S$ 258
Alaska Airlines
From S$ 400
Jetblue Airways
From S$ 437
Southwest Airlines
From S$ 455
Delta Air Lines
From S$ 459
United Airlines
From S$ 484
American Airlines
From S$ 548
IBERIA
From S$ 572
Virgin Atlantic
From S$ 588
British Airways
From S$ 596
ANA airlines
Find more flights and airlines

Flight Info of Flights from Ontario International Airport to London

Cheapest return ticket price

S$ 490

Cheapest direct flight price

S$ 196

Cheapest month

April

Peak season for travel

September

FAQs for Ontario International Airport to London Flights