$39 Find deals on international flights to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 5/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals
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Flight Deals

Book Cheap International Flights Deals to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip international flight deals to Ontario

Thu, May 21 - Mon, May 25
Frontier Logo
3:39 pm - 10:05 am
CUN
-
ONT
20h 26m
1 stop
Frontier Logo
6:00 am - 12:04 pm
ONT
-
CUN
28h 04m
1 stop
$257Frontier
Mon, May 11 - Tue, May 19
Multiple Airlines Logo
8:45 am - 10:05 am
YYC
-
ONT
26h 20m
1 stop
Multiple Airlines Logo
6:00 am - 2:45 pm
ONT
-
YYC
7h 45m
1 stop
$294Multiple Airlines
Fri, May 8 - Mon, May 18
American Airlines Logo
5:36 am - 11:46 pm
GDL
-
ONT
19h 10m
1 stop
American Airlines Logo
12:19 pm - 12:49 pm
ONT
-
GDL
23h 30m
1 stop
$303American Airlines
Thu, May 28 - Sun, May 31
United Airlines Logo
2:30 pm - 12:12 pm
GDL
-
ONT
22h 42m
2 stops
United Airlines Logo
5:00 am - 1:34 pm
ONT
-
GDL
31h 34m
2 stops
$315United Airlines
Wed, May 27 - Tue, Jun 2
United Airlines Logo
12:30 pm - 12:12 pm
GDL
-
ONT
24h 42m
2 stops
United Airlines Logo
5:45 am - 9:34 pm
ONT
-
GDL
14h 49m
1 stop
$316United Airlines
Tue, May 12 - Fri, May 29
Volaris Logo
4:32 pm - 11:05 pm
CUN
-
ONT
8h 33m
1 stop
Volaris Logo
12:55 am - 1:41 pm
ONT
-
CUN
10h 46m
1 stop
$321Volaris
Thu, Sep 3 - Wed, Sep 16
Volaris Logo
10:00 am - 7:46 pm
MEX
-
ONT
10h 46m
1 stop
Volaris Logo
12:55 am - 1:25 pm
ONT
-
MEX
11h 30m
1 stop
$321Volaris
Thu, May 28 - Sun, May 31
Delta Logo
7:45 am - 4:17 pm
YYC
-
ONT
9h 32m
1 stop
Delta Logo
1:29 pm - 10:57 pm
ONT
-
YYC
8h 28m
1 stop
$332Delta
Wed, May 6 - Sun, May 10
American Airlines Logo
2:25 pm - 11:46 pm
SDQ
-
ONT
12h 21m
2 stops
American Airlines Logo
7:35 pm - 9:20 am
ONT
-
SDQ
10h 45m
2 stops
$679American Airlines
Wed, May 6 - Sun, May 10
Delta Logo
6:00 am - 10:37 pm
MAD
-
ONT
25h 37m
2 stops
Delta Logo
9:50 am - 4:45 pm
ONT
-
MAD
21h 55m
2 stops
$838Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$39
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Denver to Ontario

FAQs for booking Worldwide to Ontario flights

  • How does KAYAK find such low prices on flights from Worldwide 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 Worldwide to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Worldwide 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 Worldwide 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 Worldwide with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Worldwide 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 Worldwide up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

Ontario (ONT)