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Flights to Ontario

Cheap flights to Ontario from $38

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ontario departing on 6/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Mon 6/3
Mon 6/10

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Ontario flight deals found on momondo

Check out some of the best fares from airports in United States to Ontario found recently by users on momondo
Frontier
Jun 12
SFO5:15 amSan Francisco
1h 23m
ONT6:38 amOntario
Jun 12
ONT7:39 amOntario
1h 27m
SFO9:06 amSan Francisco
Frontier
Jun 10
SFO5:45 amSan Francisco
1h 23m
ONT7:08 amOntario
Jun 12
ONT8:08 amOntario
1h 28m
SFO9:36 amSan Francisco
Frontier
Jul 2
SFO5:45 amSan Francisco
1h 23m
ONT7:08 amOntario
Jul 3
ONT8:19 amOntario
1h 28m
SFO9:47 amSan Francisco
Frontier
Aug 6
DEN10:40 pmDenver Intl
2h 19m
ONT11:59 pmOntario
Aug 7
ONT7:30 pmOntario
2h 27m
DEN10:57 pmDenver Intl
Frontier
Jun 12
DEN5:40 amDenver Intl
2h 22m
ONT7:02 amOntario
Jun 12
ONT12:49 amOntario
2h 20m
DEN4:09 amDenver Intl
Frontier
Jun 4
DEN10:37 pmDenver Intl
2h 22m
ONT11:59 pmOntario
Jun 17
ONT12:59 amOntario
2h 20m
DEN4:19 amDenver Intl

Find the cheapest one-way flights to Ontario

If you're looking for one-way flights from United States to Ontario, view some of our deals below provided by Frontier
Frontier
Jun 7
SFO5:45 amSan Francisco
1h 23m
ONT7:08 amOntario
Frontier
Jun 16
SFO5:15 amSan Francisco
1h 23m
ONT6:38 amOntario
Frontier
Jul 3
DEN5:50 amDenver Intl
2h 22m
ONT7:12 amOntario

Ontario flights insights and trends

Explore insights for your Ontario flight to craft the best travel plan

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from United States to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $255. If you aren’t able to travel during the month of January, then book flights to Ontario from United States during September instead. Flights to Ontario in September, while not as cheap as those in January, still average around $278.

What is the absolute cheapest flight to Ontario?

In the past two weeks, users have booked deals to Ontario for $34/person, which is 90% cheaper than the average flight to Ontario. To find the cheapest price to Ontario from your area, use momondo’s Airport-to-Airport Pricing Tool.
See prices from:

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $336. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from United States to Ontario for around $447.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from United States to Ontario when you can find flight prices for as low as $298. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $396 on average. Flights to Ontario from United States in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How long does it take to fly to Ontario?

Average flight duration from United States to Ontario depends on which airport you fly into and out of. Flying from San Francisco to Los Angeles is 1h 28m on average, while flying from Miami to Los Angeles is 5h 27m on average. Los Angeles is the most popular airport in Ontario.

How far in advance should I book a flight to Ontario?

Most flyers found that booking tickets 42 days in advance of their planned departure date is the best time to get cheap flights to Ontario. During this timeframe, flight prices are around $362. However, in the past 72 hours, people saw flights from United States for as low as $246.

Cheap Ontario flight deals and tips

Summary info about Ontario flight prices, duration and airlines

Best One-Way Price

$38

Best Round-Trip Price

$54

Fastest flight time

1h 21m

Operated By

1 airline
The best one-way flight price to Ontario from United States in the last 72 hours is $38 (San Francisco to Ontario).
The best round-trip flight price to Ontario from United States in the last 72 hours is $54 (San Francisco to Ontario).
The fastest flight to Ontario from United States takes 1h 21m (San Francisco to Ontario).
There is 1 airline operating flights to Ontario, including Frontier.

Frequently asked questions about flying to Ontario

Is there an alternative airport near Ontario?

Finding an alternative and possibly cheaper destination airport near Ontario is possible. If you are planning a flight to Ontario, consider booking flights to Ontario Airport (3 mi from Ontario city center), Santa Ana J. Wayne/Orange Cnty Airport (29 mi from Ontario city center), Long Beach Municipal Airport (33 mi from Ontario city center) or Burbank Bob Hope Airport (42 mi from Ontario city center).

Is there a cheaper alternative to flying into Ontario?

Prices vary based on where travelers are departing from, but on average, the cheapest airport to fly to in Ontario is Burbank Bob Hope Airport where the average price is $242. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

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

Prices for flights to Ontario Airport refresh daily.

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

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to 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.


Why use momondo?

Why should I use momondo to find a flight deal to Ontario?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight to Ontario. momondo saves you time and could save you money on your trip.

Can I find flights to Ontario with flexible booking policies on momondo?

Yes. All flights to Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as filter your options to help you make an informed choice when booking flights to Ontario.

I’m not ready to book a flight to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to Ontario and let you know when they change.


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