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Cheap flights from Ontario from $29

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario departing on 7/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Ontario

Cheap one-way flights from Ontario

United Airlines Logo
6:39 pm - 8:06 pmONT-SFO
1h 27mnonstop
$29United Airlines
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Wed, Jul 30
Frontier Logo
9:41 pm - 11:13 pmONT-SFO
1h 32mnonstop
$34Frontier
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Thu, Oct 23
Southwest Logo
9:00 pm - 10:10 pmONT-LAS
1h 10mnonstop
$45Southwest
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Tue, Aug 5
Southwest Logo
2:10 pm - 3:20 pmONT-LAS
1h 10mnonstop
$49Southwest
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Tue, Sep 2
American Airlines Logo
8:14 am - 8:59 pmONT-LGA
9h 45m1 stop
$80American Airlines
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Tue, Aug 26
American Airlines Logo
6:17 am - 6:29 pmONT-LGA
9h 12m2 stops
$85American Airlines
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Tue, Aug 26
Alaska Airlines Logo
2:22 pm - 11:59 pmONT-DEN
8h 37m1 stop
$88Alaska Airlines
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Mon, Aug 18
Alaska Airlines Logo
2:21 pm - 11:59 pmONT-DEN
8h 38m1 stop
$96Alaska Airlines
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Fri, Aug 15
Delta Logo
6:00 am - 10:34 amONT-PDX
4h 34m1 stop
$99Delta
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Wed, Aug 27
Delta Logo
5:59 pm - 8:45 pmONT-SEA
2h 46mnonstop
$99Delta
Find Deal
Tue, Aug 5

Flights from Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to help you craft the best travel plan.

What are the most popular domestic flights out of Ontario?

From Ontario, you can take domestic flights to many cities. Searches reveal that momondo users prefer flights to Portland, Denver, Phoenix, Salt Lake City, and Chicago the most.

Frequently asked questions regarding flights from Ontario

Which airlines are currently offering the cheapest flights from Ontario?

Our data suggests that currently, the cheapest flights from Ontario are being offered by Frontier, Alaska Airlines, and American Airlines. For example, Frontier flights from Ontario to Stockton, start at $20, Alaska Airlines flights from Ontario to San Francisco cost around $23, and American Airlines flights from Ontario to Reno are around $31.

What is the cheapest flight available from Ontario?

Currently, the cheapest flight from Ontario found by our users is for $28 to San Francisco. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $1,499 to travel from Ontario to San Francisco.

Which destinations have the most frequent flights from Ontario?

Dallas/Fort Worth Airport, Seattle and San Francisco are currently the destinations served most frequently from Ontario, with 17, 16 and 8 flights per day on average, respectively.

Which airlines can you fly with from Ontario?

Airlines including American Airlines, Delta and China Airlines frequently fly from Ontario. You can view other airlines by performing a quick search in the form above.

What is the cheapest first class flight from Ontario?

If you are looking for a cheap first class flight, consider flights to Phoenix Sky Harbor Intl Airport, for which the starting price of a first class seat can be as low as $464.

When did momondo last update prices for flights from Ontario Airport?

Prices for flights from Ontario Airport refresh daily.

How many operators does momondo search for flights from Ontario Airport?

How old do you have to be to fly from Ontario Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


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