$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 10/16. 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

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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

lun., ene. 5 - sáb., ene. 10
Volaris Logo
5:12 pm - 6:44 pmSJD-ONT
2h 32mnonstop
Volaris Logo
12:50 pm - 4:12 pmONT-SJD
2h 22mnonstop
$180Volaris
Find Deal
jue., oct. 2 - mar., oct. 14
Avianca Logo
10:00 am - 9:55 pmGUA-ONT
12h 55m1 stop
Avianca Logo
11:25 pm - 9:05 amONT-GUA
8h 40m1 stop
$206Avianca
Find Deal
vie., oct. 3 - mar., oct. 7
Logo
6:15 am - 3:18 pmYYC-ONT
10h 03m1 stop
Logo
8:00 am - 11:55 amONT-YYC
26h 55m1 stop
$259
Find Deal
mar., feb. 10 - mar., feb. 17
United Airlines Logo
1:35 pm - 9:58 pmGDL-ONT
10h 23m1 stop
United Airlines Logo
6:02 am - 10:35 pmONT-GDL
14h 33m1 stop
$263United Airlines
Find Deal
jue., ene. 22 - mié., feb. 11
United Airlines Logo
5:45 am - 10:53 pmGDL-ONT
19h 08m2 stops
United Airlines Logo
6:00 am - 10:35 pmONT-GDL
14h 35m1 stop
$264United Airlines
Find Deal
vie., oct. 24 - vie., oct. 31
Logo
7:35 pm - 12:37 pmYYC-ONT
18h 02m1 stop
Logo
10:40 pm - 12:41 amONT-YYC
25h 01m2 stops
$272
Find Deal
vie., sep. 26 - lun., sep. 29
Frontier Logo
9:04 pm - 11:13 pmGDL-ONT
3h 09mnonstop
Frontier Logo
9:11 pm - 1:13 amONT-GDL
3h 02mnonstop
$278Frontier
Find Deal
jue., oct. 9 - sáb., oct. 11
Frontier Logo
5:12 pm - 7:21 pmGDL-ONT
3h 09mnonstop
Frontier Logo
1:09 am - 5:11 amONT-GDL
3h 02mnonstop
$279Frontier
Find Deal
sáb., nov. 1 - mar., nov. 11
American Airlines Logo
6:44 am - 6:52 pmSJO-ONT
13h 08m1 stop
American Airlines Logo
3:08 pm - 2:10 pmONT-SJO
21h 02m1 stop
$281American Airlines
Find Deal
sáb., nov. 1 - mar., nov. 11
American Airlines Logo
6:44 am - 6:52 pmSJO-ONT
13h 08m1 stop
American Airlines Logo
3:08 pm - 2:10 pmONT-SJO
21h 02m1 stop
$282American Airlines
Find Deal

Everything you should know

Cheapest round-trip
$180
Volaris
lun. 1/5sáb. 1/10
SJD - ONT • Non-stop
Cheapest one-way
$120
Typical prices: $288-591
Avianca
jue. 10/16
GUA - ONT • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$39
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from San Francisco 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)

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