Cheapest return flights from Ontario (ONT) to London (LHR), June

14 dates in June 2027, from $ 955. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
15 Jun 22 Jun 2027 Alaska Airlines
22 Jun 26 Jun 2027 Alaska Airlines
20 Jun 26 Jun 2027 Alaska Airlines
21 Jun 26 Jun 2027 Alaska Airlines
8 Jun 18 Jun 2027 Alaska Airlines
19 Jun 26 Jun 2027 Alaska Airlines
17 Jun 24 Jun 2027 Alaska Airlines
11 Jun 29 Jun 2027 Alaska Airlines
4 Jun 20 Jun 2027 Alaska Airlines
27 Jun 20 Jul 2027 Alaska Airlines
27 Jun 21 Jul 2027 Alaska Airlines
18 Jun 3 Jul 2027 Alaska Airlines
4 Jun 19 Jul 2027 Alaska Airlines
19 Jun 30 Jun 2027 jetBlue
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Deals for one-way flights from Ontario to London in June.

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About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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