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Cheap flights from Chicago O'Hare Intl Airport to Ontario from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Ontario departing on 2/12. 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 Chicago O'Hare Intl Airport to Los Angeles

Cheap round-trip flights

These are some of the best round-trip flight deals from Chicago O'Hare Intl Airport to Los Angeles that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago O'Hare Intl Airport to Los Angeles.

Cheap last minute flights

Planning a quick getaway from Chicago O'Hare Intl Airport to Los Angeles? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Los Angeles, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Chicago O'Hare Intl Airport to Los Angeles

Find recent round-trip train or bus tickets from Chicago O'Hare Intl Airport to Los Angeles.

All round-trip flight deals to Los Angeles

The cheapest plane tickets to Los Angeles found on KAYAK recently.
6:20 am - 8:25 pmORD-ONT
16h 05m1 stop
7:56 am - 5:25 pmONT-ORD
7h 29m1 stop
$117Frontier
Find Deal
Mon, Jan 13 - Thu, Jan 16
6:20 am - 8:46 pmORD-ONT
16h 26m1 stop
7:56 am - 5:25 pmONT-ORD
7h 29m1 stop
$118Frontier
Find Deal
Mon, Feb 3 - Thu, Feb 6
6:36 pm - 7:11 amORD-ONT
14h 35m1 stop
7:56 am - 5:25 pmONT-ORD
7h 29m1 stop
$120Frontier
Find Deal
Thu, Jan 30 - Thu, Feb 6
7:10 am - 12:41 pmORD-ONT
7h 31m1 stop
10:47 am - 7:59 pmONT-ORD
7h 12m1 stop
$246United Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
10:35 am - 8:29 pmORD-ONT
11h 54m2 stops
1:45 pm - 9:25 pmONT-ORD
5h 40m1 stop
$251United Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
2:10 pm - 10:32 pmORD-ONT
10h 22m1 stop
6:00 am - 2:12 pmONT-ORD
6h 12m1 stop
$256Delta
Find Deal
Wed, Jan 29 - Tue, Feb 4
7:10 pm - 12:14 amORD-ONT
7h 04m1 stop
12:55 pm - 11:56 pmONT-ORD
9h 01m1 stop
$287Delta
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Tue, Dec 17 - Tue, Dec 24
2:55 pm - 9:25 amORD-ONT
20h 30m1 stop
11:45 am - 10:35 pmONT-ORD
8h 50m1 stop
$366Southwest
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Tue, Dec 3 - Wed, Dec 4
7:00 am - 12:00 pmORD-ONT
7h 00m1 stop
11:59 pm - 8:25 amONT-ORD
6h 26m1 stop
$367American Airlines
Find Deal
Wed, Dec 18 - Sat, Jan 4
2:55 pm - 6:55 pmORD-ONT
6h 00m1 stop
12:20 pm - 10:35 pmONT-ORD
8h 15m2 stops
$382Southwest
Find Deal
Wed, Dec 18 - Tue, Dec 24
10:56 am - 6:58 pmORD-ONT
10h 02m1 stop
$54Frontier
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Wed, Feb 12
6:30 pm - 12:09 amORD-ONT
7h 39m1 stop
$55Frontier
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Sat, Feb 22
11:47 am - 6:24 pmORD-ONT
8h 37m2 stops
$114American Airlines
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Tue, Jan 7
10:35 am - 8:29 pmORD-ONT
11h 54m2 stops
$128United Airlines
Find Deal
Fri, Jan 10
6:00 am - 12:00 pmORD-ONT
8h 00m1 stop
$154American Airlines
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Thu, Dec 12
7:10 pm - 12:14 amORD-ONT
7h 04m1 stop
$159Delta
Find Deal
Tue, Dec 17
2:39 pm - 8:51 pmORD-ONT
8h 12m1 stop
$168United Airlines
Find Deal
Tue, Jan 7
7:10 pm - 12:14 amORD-ONT
7h 04m1 stop
$183Delta
Find Deal
Fri, Dec 13
6:15 am - 1:25 pmORD-ONT
9h 10m2 stops
$184Southwest
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Fri, Feb 21
12:15 pm - 6:55 pmORD-ONT
8h 40m2 stops
$213Southwest
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Wed, Dec 18
4:48 pm - 12:04 amORD-ONT
9h 16m1 stop
10:11 pm - 5:28 pmONT-ORD
17h 17m1 stop
$224Frontier
Find Deal
Mon, Nov 25 - Wed, Dec 4
6:00 am - 8:26 amORD-ONT
28h 26m1 stop
8:04 am - 5:28 pmONT-ORD
7h 24m1 stop
$260Frontier
Find Deal
Mon, Nov 25 - Thu, Dec 5
3:35 pm - 11:01 pmORD-ONT
9h 26m1 stop
7:10 am - 8:25 pmONT-ORD
11h 15m2 stops
$462Delta
Find Deal
Sun, Nov 24 - Wed, Nov 27
6:17 am - 4:45 pmORD-ONT
12h 28m2 stops
7:10 am - 8:25 pmONT-ORD
11h 15m2 stops
$467Delta
Find Deal
Sun, Nov 24 - Wed, Nov 27
6:15 am - 11:40 amORD-ONT
7h 25m1 stop
2:45 pm - 11:05 pmONT-ORD
6h 20m1 stop
$513Southwest
Find Deal
Mon, Nov 25 - Mon, Nov 25
4:05 pm - 8:44 pmORD-ONT
6h 39m1 stop
3:15 pm - 12:52 amONT-ORD
7h 37m1 stop
$518United Airlines
Find Deal
Sun, Nov 24 - Tue, Nov 26
3:50 pm - 10:02 pmORD-ONT
8h 12m1 stop
1:42 pm - 11:10 pmONT-ORD
7h 28m1 stop
$532United Airlines
Find Deal
Sun, Nov 24 - Thu, Dec 19
7:30 am - 5:35 pmORD-ONT
12h 05m2 stops
1:55 pm - 10:35 pmONT-ORD
6h 40m1 stop
$568Southwest
Find Deal
Fri, Nov 22 - Mon, Dec 2
8:05 am - 1:59 pmORD-ONT
7h 54m1 stop
12:59 am - 9:25 amONT-ORD
6h 26m1 stop
$1,193American Airlines
Find Deal
Fri, Nov 22 - Sun, Dec 1
7:00 am - 12:03 pmORD-ONT
7h 03m1 stop
12:59 am - 9:25 amONT-ORD
6h 26m1 stop
$1,268American Airlines
Find Deal
Tue, Nov 26 - Sat, Nov 30

Frontier flights from Chicago O'Hare Intl Airport to Ontario

Our best Frontier deals on Chicago O'Hare Intl Airport to Ontario flight tickets
Frontier
Jan 13
ORD6:20 amChicago O'Hare Intl
16h 05m
1 stop
ONT8:25 pmOntario
Jan 16
ONT7:56 amOntario
7h 29m
1 stop
ORD5:25 pmChicago O'Hare Intl
Frontier
Feb 3
ORD6:20 amChicago O'Hare Intl
16h 26m
1 stop
ONT8:46 pmOntario
Feb 6
ONT7:56 amOntario
7h 29m
1 stop
ORD5:25 pmChicago O'Hare Intl
Frontier
Jan 30
ORD6:36 pmChicago O'Hare Intl
14h 35m
1 stop
ONT7:11 amOntario
Feb 6
ONT7:56 amOntario
7h 29m
1 stop
ORD5:25 pmChicago O'Hare Intl

Alaska Airlines flights from Chicago O'Hare Intl Airport to Ontario

Our best Alaska Airlines deals on Chicago O'Hare Intl Airport to Ontario flight tickets
Alaska Airlines
Jan 9
ORD3:35 pmChicago O'Hare Intl
8h 38m
1 stop
ONT10:13 pmOntario
Jan 13
ONT11:33 amOntario
10h 26m
1 stop
ORD11:59 pmChicago O'Hare Intl
Alaska Airlines
Jan 10
ORD3:35 pmChicago O'Hare Intl
8h 38m
1 stop
ONT10:13 pmOntario
Jan 15
ONT11:33 amOntario
10h 26m
1 stop
ORD11:59 pmChicago O'Hare Intl
Alaska Airlines
Jan 9
ORD3:35 pmChicago O'Hare Intl
8h 38m
1 stop
ONT10:13 pmOntario
Jan 14
ONT11:14 amOntario
10h 45m
2 stops
ORD11:59 pmChicago O'Hare Intl

See travel insights to Los Angeles from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

In general, September is the cheapest month to fly from Chicago O'Hare Intl Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $166. If you aren’t able to travel during the month of September, then book flights to Ontario from Chicago O'Hare Intl Airport during November instead. Flights to Ontario in November, while not as cheap as those in September, still average around $218.

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 Tuesday when prices can be found for as low as $303. 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 Chicago O'Hare Intl Airport to Ontario for around $427.

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

In the evening is the cheapest time of day to fly from Chicago O'Hare Intl Airport to Ontario when you can find flight prices for as low as $219. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $395 on average. Flights to Ontario from Chicago O'Hare Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Most flyers found that booking tickets 40 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 $298. However, in the past 72 hours, people saw flights from Chicago O'Hare Intl Airport for as low as $124.

Can stopping save me money on Chicago O'Hare Intl Airport to Ontario flights?

You could potentially save up to 52% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Ontario flight.

How have Chicago O'Hare Intl Airport to Ontario flight prices changed over time?

As of November 2024, prices for Chicago O'Hare Intl Airport to Ontario flights are approximately 58% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Ontario (ORD to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Ontario

Best Price Found

$54

Fastest flight time

5h 55m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Chicago O'Hare Intl Airport in the past 72 hours is $54. The best round-trip flight deal from Chicago O'Hare Intl Airport to Ontario found on momondo in the last 72 hours is $117.
The fastest flight from Chicago O'Hare Intl Airport to Ontario takes 5h 55m
There are no direct flights from Chicago O'Hare Intl Airport to Ontario. Popular non-direct route for this connection is Chicago O'Hare Intl Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

  • How far is Chicago O'Hare Intl to Ontario by plane?

    A flight from Chicago O'Hare Intl to Ontario will travel around 1697.7 mi. 5h 55m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ontario Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ontario Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 from Chicago O'Hare Intl Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Ontario?


Best airlines flying from Chicago O'Hare Intl Airport to Ontario

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $122Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $122Free CancellationRating
6.3
8,169 reviews
Search Spirit Airlines flights
DeltaPriceFrom $256Free CancellationRating
8.0
8,755 reviews
Search Delta flights
SouthwestPriceFrom $256Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
American AirlinesPriceFrom $259Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $353Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Ontario from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

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

How can momondo help me find flights from Chicago to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Chicago to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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