$33 Find deals on international flights to Ontario - Compare and Save

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 8/31. 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

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

Fri, Aug 21 - Sun, Aug 30
Volaris Logo
10:40 am - 7:46 pm
CUN
-
ONT
11h 06m
1 stop
Volaris Logo
12:55 am - 3:28 pm
ONT
-
CUN
12h 33m
1 stop
$301Volaris
Sat, Sep 12 - Fri, Sep 18
Volaris Logo
12:49 pm - 11:05 pm
CUN
-
ONT
12h 16m
1 stop
Volaris Logo
9:36 pm - 12:04 pm
ONT
-
CUN
12h 28m
1 stop
$302Volaris
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
8:45 am - 11:50 pm
YYC
-
ONT
16h 05m
1 stop
Multiple Airlines Logo
6:00 am - 2:45 pm
ONT
-
YYC
7h 45m
1 stop
$302Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
Multiple Airlines Logo
7:55 pm - 11:02 am
YYC
-
ONT
16h 07m
1 stop
Multiple Airlines Logo
6:00 am - 2:45 pm
ONT
-
YYC
7h 45m
1 stop
$305Multiple Airlines
Fri, Aug 21 - Fri, Aug 28
Volaris Logo
12:00 pm - 11:05 pm
MEX
-
ONT
12h 05m
1 stop
Volaris Logo
9:36 pm - 7:25 am
ONT
-
MEX
8h 49m
1 stop
$307Volaris
Tue, Oct 6 - Tue, Oct 20
Frontier Logo
11:55 am - 8:54 pm
MEX
-
ONT
9h 59m
1 stop
Frontier Logo
6:00 am - 5:30 pm
ONT
-
MEX
10h 30m
1 stop
$310Frontier
Sat, Oct 10 - Sat, Oct 17
Frontier Logo
8:46 am - 4:10 pm
GDL
-
ONT
8h 24m
1 stop
Frontier Logo
11:16 am - 7:54 pm
ONT
-
GDL
7h 38m
1 stop
$315Frontier
Sat, Oct 31 - Wed, Nov 4
Delta Logo
7:45 am - 12:22 pm
YYC
-
ONT
5h 37m
1 stop
Delta Logo
5:04 pm - 12:12 am
ONT
-
YYC
5h 08m
1 stop
$315Delta
Thu, Aug 6 - Mon, Aug 10
WestJet Logo
8:45 am - 5:21 pm
YYC
-
ONT
9h 36m
1 stop
WestJet Logo
6:20 am - 9:50 am
ONT
-
YYC
26h 30m
1 stop
$346WestJet
Thu, Oct 22 - Sat, Jan 23
Delta Logo
1:00 am - 5:12 pm
BLR
-
ONT
28h 42m
2 stops
Delta Logo
7:00 am - 12:30 am
ONT
-
BLR
28h 00m
2 stops
$1,052Delta
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is United Airlines, followed by Frontier and Alaska Airlines.

United Airlines
United Airlines
#1 most popular
Frontier
Frontier
#2 most popular
Alaska Airlines
Alaska Airlines
#3 most popular
American Airlines
American Airlines
#4 most popular
Find deals

Good to know

Low season

January

Cheapest flight

$33
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 12% 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)