$44 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 5/21. 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, Apr 23 - Wed, Apr 29
Frontier Logo
1:01 pm - 11:55 pm
CUN
-
ONT
12h 54m
1 stop
Frontier Logo
7:44 pm - 2:56 pm
ONT
-
CUN
17h 12m
2 stops
$225Frontier
Fri, May 22 - Tue, May 26
Frontier Logo
5:33 pm - 7:46 pm
GDL
-
ONT
3h 13mnonstop
Frontier Logo
8:06 pm - 1:34 pm
ONT
-
GDL
16h 28m
1 stop
$238Frontier
Fri, May 22 - Mon, May 25
Frontier Logo
11:05 am - 7:11 pm
CUN
-
ONT
10h 06m
1 stop
Frontier Logo
8:06 pm - 2:29 pm
ONT
-
CUN
16h 23m
1 stop
$262Frontier
Sat, Apr 25 - Sun, May 3
Multiple Airlines Logo
12:01 pm - 10:37 pm
CUN
-
ONT
12h 36m
1 stop
Multiple Airlines Logo
9:36 pm - 9:55 am
ONT
-
CUN
10h 19m
1 stop
$268Multiple Airlines
Thu, May 28 - Sun, May 31
United Airlines Logo
2:30 pm - 9:55 pm
GDL
-
ONT
8h 25m
1 stop
United Airlines Logo
5:45 am - 9:34 pm
ONT
-
GDL
14h 49m
1 stop
$283United Airlines
Thu, May 7 - Sun, May 10
United Airlines Logo
2:30 pm - 9:58 pm
GDL
-
ONT
8h 28m
1 stop
United Airlines Logo
10:37 am - 11:25 am
ONT
-
GDL
23h 48m
2 stops
$295United Airlines
Tue, Jun 9 - Tue, Jun 30
Volaris Logo
10:00 am - 7:46 pm
MEX
-
ONT
10h 46m
1 stop
Volaris Logo
9:36 pm - 7:25 am
ONT
-
MEX
8h 49m
1 stop
$295Volaris
Thu, May 7 - Mon, May 11
Volaris Logo
10:00 am - 7:46 pm
MEX
-
ONT
10h 46m
1 stop
Volaris Logo
9:36 pm - 7:25 am
ONT
-
MEX
8h 49m
1 stop
$298Volaris
Mon, Jun 1 - Tue, Jun 9
Multiple Airlines Logo
11:00 am - 7:32 pm
YYC
-
ONT
9h 32m
1 stop
Multiple Airlines Logo
1:33 pm - 10:00 pm
ONT
-
YYC
7h 27m
1 stop
$306Multiple Airlines
Sat, Oct 3 - Sat, Oct 10
Avianca Logo
3:10 pm - 9:45 pm
SJO
-
ONT
7h 35m
1 stop
Avianca Logo
11:35 pm - 8:45 am
ONT
-
SJO
8h 10m
1 stop
$383Avianca
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$44
Best time to beat the crowds but there is an average 4% 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)