S$ 51 Cheap Flights from Ontario to Chicago (ONT-CHI)

Cheap Flights from Ontario to Chicago

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Cheap Flights from Ontario to Chicago starting at CNY 51

We've found these cheap flights for you. You can book one-way or return flight tickets.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Ontario to Chicago

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Cheapest Airlines flying from Ontario to Chicago

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines

From S$ 51

Alaska Airlines

From S$ 132

Delta Air Lines

From S$ 136

United Airlines

From S$ 165

Southwest Airlines

From S$ 195

American Airlines

From S$ 219

ANA airlines

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Alternative Routes from Ontario to Chicago

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Ontario to Chicago.

Cheapest
ONT
00:59
21h 57m
1 transfer
ORD
00:56
Ontario International Airport - O'Hare International Airport
Wed, May 1Frontier Airlines
S$ 51
ONT
00:59
8h 39m
1 transfer
MDW
11:38
Ontario International Airport - Midway International Airport
Wed, May 1Frontier Airlines
S$ 51
ONT
00:59
8h 39m
1 transfer
MDW
11:38
Ontario International Airport - Midway International Airport
Wed, May 1Frontier Airlines
S$ 51
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Frequently Asked Questions

When to buy flight tickets from Ontario (ONT) to Chicago (CHI) the cheapest?
Airlines adjust prices for flights from Ontario to Chicago based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much is a flight from Ontario (ONT) to Chicago (CHI) cost?
According to Trip.com's data, the lowest price is around S$ 333.
What is the transportation method from the main airport to downtown in Chicago?
- The distance from O'Hare International Airport to downtown is about 25km, by taxi about 40 minutes.
- The distance from Midway International Airport to downtown is about 14km, by taxi about 30 minutes.
What's the most popular airline for direct flights from Ontario (ONT) to Chicago (CHI)?
United Airlines operates 2 direct flights from Ontario (ONT) to Chicago (CHI).
How many airports in Chicago?
There are 5 airports near Chicago: O'Hare International Airport, Chicago Du Page County Airport, Midway International Airport, Chicago Palwaukee Airport and Chicago Rockford International Airport.

How to find a cheap flight from Ontario to Chicago

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Chicago. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Find cheapest flight ticket from Ontario to Chicago

Cheapest direct flight price	S$ 50
Cheapest return ticket price	S$ 119
Cheapest month	February
Peak season for travel	October
Flight distance	9,812.12km
Popular airline	Alaska Airlines