$254 Find Cheap Flights from Oakland 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 from Oakland to Ontario departing on 6/21. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oakland to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oakland to Ontario, as well as popular online travel agencies
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Flight Deals

Book Cheap Oakland to Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Oakland 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 flight deals from Oakland to Ontario

Wed, Sep 16 - Tue, Sep 22
Delta Logo
6:00 am - 4:39 pm
OAK
-
YYZ
7h 39m
1 stop
Delta Logo
5:49 pm - 11:59 pm
YYZ
-
OAK
9h 10m
1 stop
$565Delta
Wed, Sep 16 - Tue, Sep 22
Delta Logo
6:00 am - 4:39 pm
OAK
-
YYZ
7h 39m
1 stop
Delta Logo
5:49 pm - 11:59 pm
YYZ
-
OAK
9h 10m
1 stop
$566Delta
Wed, Sep 16 - Mon, Sep 21
Delta Logo
6:00 am - 9:59 pm
OAK
-
YYZ
12h 59m
2 stops
Delta Logo
5:49 pm - 11:59 pm
YYZ
-
OAK
9h 10m
1 stop
$575Delta
Wed, Sep 16 - Tue, Sep 22
Delta Logo
5:03 pm - 10:23 am
OAK
-
YYZ
14h 20m
2 stops
Delta Logo
6:10 pm - 11:59 pm
YYZ
-
OAK
8h 49m
2 stops
$580Delta
Tue, Jun 30 - Fri, Jul 3
Delta Logo
6:00 am - 11:14 pm
OAK
-
YYZ
14h 14m
2 stops
Delta Logo
12:09 pm - 11:54 pm
YYZ
-
OAK
14h 45m
2 stops
$581Delta
Wed, Sep 16 - Tue, Sep 22
Delta Logo
6:00 am - 4:39 pm
OAK
-
YYZ
7h 39m
1 stop
Delta Logo
5:49 pm - 11:59 pm
YYZ
-
OAK
9h 10m
1 stop
$601Delta
Fri, Sep 18 - Wed, Sep 30
Alaska Airlines Logo
6:01 am - 3:45 pm
OAK
-
YYZ
30h 44m
1 stop
Alaska Airlines Logo
4:55 pm - 10:54 pm
YYZ
-
OAK
8h 59m
1 stop
$608Alaska Airlines
Tue, Jul 14 - Fri, Jul 24
Delta Logo
6:00 am - 4:35 pm
OAK
-
YYZ
7h 35m
1 stop
Delta Logo
7:45 am - 11:50 pm
YYZ
-
OAK
19h 05m
2 stops
$611Delta
Fri, Aug 7 - Wed, Aug 12
Multiple Airlines Logo
12:05 am - 8:55 pm
OAK
-
YYZ
17h 50m
1 stop
Multiple Airlines Logo
9:00 am - 4:55 pm
YYZ
-
OAK
10h 55m
2 stops
$614Multiple Airlines
Tue, Jul 14 - Thu, Jul 23
Delta Logo
5:05 pm - 11:19 am
OAK
-
YYZ
15h 14m
2 stops
Delta Logo
11:40 am - 11:50 pm
YYZ
-
OAK
15h 10m
2 stops
$616Delta
Booking Insights

KAYAK's insights & trends for Oakland to Ontario flights

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

Which airlines provide the cheapest flights from Oakland to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 3 days.

In the past 3 days, the cheapest round-trip tickets from Oakland to Ontario were found on Delta ($581) and Alaska Airlines ($655).

Find deals

Good to know

Low seasonOctober
Cheapest flight$254
Best time to beat the crowds with an average 64% drop in price.
Most popular time to fly and prices are also 64% lower on average.
Flight from Oakland to Toronto

FAQs - booking Ontario flights

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

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

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

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

Information on your arrival and departure airports

Oakland (OAK)