$396 Find Cheap Flights from Europe to Ontario - Compare and Save

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1 adult, Economy, 0 bags

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Cheap Flights from Europe to Ontario

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Europe to Ontario

Fri, Nov 20 - Fri, Nov 27
Alaska Airlines Logo
2:45 pm - 11:31 pmLHR  London Heathrow-ONT Ontario
16h 46m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 12:20 pmONT  Ontario-LHR London Heathrow
22h 20m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Thu, Dec 10 - Thu, Dec 24
Alaska Airlines Logo
2:45 pm - 10:59 pmLHR  London Heathrow-ONT Ontario
16h 14m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
3:59 pm - 12:20 pmONT  Ontario-LHR London Heathrow
36h 21m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Wed, Nov 25 - Fri, Dec 4
Alaska Airlines Logo
2:45 pm - 3:33 pmLHR  London Heathrow-ONT Ontario
32h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 12:20 pmONT  Ontario-LHR London Heathrow
22h 20m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Mon, Nov 23 - Sat, Jan 23
Alaska Airlines Logo
2:45 pm - 11:31 pmLHR  London Heathrow-ONT Ontario
16h 46m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 12:20 pmONT  Ontario-LHR London Heathrow
22h 20m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Fri, Dec 4 - Mon, Dec 7
Alaska Airlines Logo
2:45 pm - 4:05 pmLHR  London Heathrow-ONT Ontario
33h 20m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
11:57 am - 12:20 pmONT  Ontario-LHR London Heathrow
16h 23m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Fri, Nov 20 - Sun, Nov 22
Alaska Airlines Logo
2:45 pm - 11:31 pmLHR  London Heathrow-ONT Ontario
16h 46m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 12:20 pmONT  Ontario-LHR London Heathrow
22h 20m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Wed, Nov 25 - Sat, Dec 5
Alaska Airlines Logo
2:45 pm - 3:33 pmLHR  London Heathrow-ONT Ontario
32h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 12:20 pmONT  Ontario-LHR London Heathrow
22h 20m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Mon, Nov 23 - Tue, Dec 8
Alaska Airlines Logo
2:45 pm - 11:31 pmLHR  London Heathrow-ONT Ontario
16h 46m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
11:57 am - 12:20 pmONT  Ontario-LHR London Heathrow
16h 23m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Mon, Nov 23 - Mon, Nov 30
Alaska Airlines Logo
2:45 pm - 11:31 pmLHR  London Heathrow-ONT Ontario
16h 46m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
8:59 pm - 12:20 pmONT  Ontario-LHR London Heathrow
31h 21m1 stop Seattle/Tacoma Intl
$565Alaska Airlines
Sun, Nov 22 - Tue, Dec 8
Alaska Airlines Logo
2:45 pm - 11:31 pmLHR  London Heathrow-ONT Ontario
16h 46m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
11:57 am - 12:20 pmONT  Ontario-LHR London Heathrow
16h 23m1 stop Seattle/Tacoma Intl
$566Alaska Airlines
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Good to know

Low season

January

Cheapest flight

$396
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 29% increase in price.
Flight from Rome to Ontario

FAQs for booking flights from Europe to Ontario

  • How does KAYAK find such low prices on flights from Europe to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Europe to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Europe to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Europe is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Europe to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Europe with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Europe to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

More options for your flight to Ontario