Cheap Flights From Los Angeles - Ontario Intl. (ONT) To O'Hare Intl. (ORD)

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Cheapest Flights from Ontario (ONT) to Chicago (ORD)

The cheapest flights to O'Hare Intl. found within the past 7 days were CA $321 round trip and CA $381 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Apr 18 - Sat, Apr 25
ONT
Ontario
ORD
Chicago
CA $321 Roundtrip, found 3 hours ago
CA $321
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Apr 18 from Ontario to Chicago, returning Sat, Apr 25, priced at CA $321 found 3 hours ago
Sat, Apr 18 - Tue, Apr 21
ONT
Ontario
ORD
Chicago
CA $392 Roundtrip, found 3 hours ago
CA $392
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Apr 18 from Ontario to Chicago, returning Tue, Apr 21, priced at CA $392 found 3 hours ago
Tue, Apr 14 - Sat, Apr 18
ONT
Ontario
ORD
Chicago
CA $402 Roundtrip, found 3 hours ago
CA $402
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 14 from Ontario to Chicago, returning Sat, Apr 18, priced at CA $402 found 3 hours ago
Sat, Apr 18 - Mon, Apr 20
ONT
Ontario
ORD
Chicago
CA $410 Roundtrip, found 3 hours ago
CA $410
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Apr 18 from Ontario to Chicago, returning Mon, Apr 20, priced at CA $410 found 3 hours ago
Thu, Apr 16 - Sat, Apr 18
ONT
Ontario
ORD
Chicago
CA $420 Roundtrip, found 3 hours ago
CA $420
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Apr 16 from Ontario to Chicago, returning Sat, Apr 18, priced at CA $420 found 3 hours ago
Wed, Apr 15 - Tue, Apr 21
ONT
Ontario
ORD
Chicago
CA $441 Roundtrip, found 3 hours ago
CA $441
Roundtrip
found 3 hours ago
Select Hawaiian Airlines flight, departing Wed, Apr 15 from Ontario to Chicago, returning Tue, Apr 21, priced at CA $441 found 3 hours ago
Tue, Apr 14 - Tue, Apr 21
ONT
Ontario
ORD
Chicago
CA $457 Roundtrip, found 3 hours ago
CA $457
Roundtrip
found 3 hours ago
Select Hawaiian Airlines flight, departing Tue, Apr 14 from Ontario to Chicago, returning Tue, Apr 21, priced at CA $457 found 3 hours ago
Sat, Apr 18 - Sun, Apr 26
ONT
Ontario
ORD
Chicago
CA $460 Roundtrip, found 3 hours ago
CA $460
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Apr 18 from Ontario to Chicago, returning Sun, Apr 26, priced at CA $460 found 3 hours ago
Sat, Apr 18 - Sun, Apr 19
ONT
Ontario
ORD
Chicago
CA $464 Roundtrip, found 3 hours ago
CA $464
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Apr 18 from Ontario to Chicago, returning Sun, Apr 19, priced at CA $464 found 3 hours ago
Tue, Apr 14 - Wed, Apr 22
ONT
Ontario
ORD
Chicago
CA $475 Roundtrip, found 3 hours ago
CA $475
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 14 from Ontario to Chicago, returning Wed, Apr 22, priced at CA $475 found 3 hours ago
Wed, Apr 15 - Thu, Apr 23
ONT
Ontario
ORD
Chicago
CA $476 Roundtrip, found 3 hours ago
CA $476
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Apr 15 from Ontario to Chicago, returning Thu, Apr 23, priced at CA $476 found 3 hours ago
Tue, Apr 14 - Wed, Apr 15
ONT
Ontario
ORD
Chicago
CA $477 Roundtrip, found 3 hours ago
CA $477
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 14 from Ontario to Chicago, returning Wed, Apr 15, priced at CA $477 found 3 hours ago
Fri, Apr 17 - Tue, Apr 21
ONT
Ontario
ORD
Chicago
CA $481 Roundtrip, found 3 hours ago
CA $481
Roundtrip
found 3 hours ago
Select Delta flight, departing Fri, Apr 17 from Ontario to Chicago, returning Tue, Apr 21, priced at CA $481 found 3 hours ago
Tue, Apr 14 - Mon, Apr 20
ONT
Ontario
ORD
Chicago
CA $493 Roundtrip, found 3 hours ago
CA $493
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 14 from Ontario to Chicago, returning Mon, Apr 20, priced at CA $493 found 3 hours ago
Tue, Apr 14 - Thu, Apr 16
ONT
Ontario
ORD
Chicago
CA $494 Roundtrip, found 3 hours ago
CA $494
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 14 from Ontario to Chicago, returning Thu, Apr 16, priced at CA $494 found 3 hours ago
Fri, Apr 17 - Mon, Apr 20
ONT
Ontario
ORD
Chicago
CA $498 Roundtrip, found 3 hours ago
CA $498
Roundtrip
found 3 hours ago
Select Delta flight, departing Fri, Apr 17 from Ontario to Chicago, returning Mon, Apr 20, priced at CA $498 found 3 hours ago
Thu, Apr 16 - Mon, Apr 20
ONT
Ontario
ORD
Chicago
CA $511 Roundtrip, found 3 hours ago
CA $511
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Apr 16 from Ontario to Chicago, returning Mon, Apr 20, priced at CA $511 found 3 hours ago

Frequently asked questions

Are there direct flights from Ontario Airport to O'Hare Intl. Airport (ORD)?
Multiple airlines offer passengers flights straight from Ontario Airport to O'Hare Intl. Airport (ORD). These include American Airlines and Frontier Airlines — check them out if you'd like to land at your destination with no changeover.
What airlines fly from ONT to O'Hare Airport?
You can choose from a few airlines advertising direct flights between Ontario and Chicago. American Airlines (AA) is one of the most reputable. This carrier operates around 34 flights every month. If you need more options, look up the deals on offer from Frontier Airlines (F9). This airline operates 4 flights each month. Between the two, you're bound to find a deal to suit your needs.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Ontario (ONT)

Travelers at ONT love to visit these top cities. Roam to the top destinations from Ontario (ONT) today with the cheap prices from Travelocity!

Popular Flight Routes from Chicago (ORD)

Travelers at ORD love to visit these top cities. Roam to the top destinations from Chicago(ORD) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.