Cheap flights from Ontario to Illinois from $124
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
How far in advance should I book a flight from Region of Ontario to Illinois?
Travelers have found it’s best to book a flight 38 days in advance to save up to 90% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 38 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Region of Ontario to Illinois 1-2 weeks in advance for as low as $337, or $489 for flights within the next 24 hours.
What is the cheapest month to fly from Region of Ontario to Illinois?
Flights from Region of Ontario to Illinois lean towards being more expensive in September. Prices are generally better when you fly from Region of Ontario to Illinois in April, with the cheapest ticket starting at $193.
What is the cheapest time of day to fly from ON to IL?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Illinois as you normally would.
Cheap Delta flights from Ontario to Illinois
Explore cheap flight options specifically provided by Delta for the route between Ontario and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Peruse some of the lowest-priced Delta flights we've found from Ontario to Illinois. It's recommended that users confirm their flight details before booking.
Cheap United Airlines flights from Ontario to Illinois
Explore cheap flight options specifically provided by United Airlines for the route between Ontario and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Take a gander at the lowest prices we've found on United Airlines flights from Ontario to Illinois. Make sure to examine the flight information before completing your reservation.
Cheap Ontario to Illinois flights in May & June 2024
Find cheap flight options from Ontario to Illinois specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Prices were last updated on May 30, 2024.
Scroll through some of the best deals on flights from Ontario to Illinois in 2024. Check back soon for alternative fares.
Ontario to Illinois 2024 flight deals
Discover exclusive flight deals for travel between Ontario and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Scroll through some of the best deals on flights from Ontario to Illinois in 2024. Check back soon for alternative fares.
Non-stop flights to Illinois from Ontario
Discover non-stop flight options from Ontario to Illinois. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
To help reduce your travel time, choose from one of these non-stop flights from Ontario to Illinois. Those looking to potentially save on 1 or 2-stop flights from Ontario to Illinois should utilize the search form at the the top of the page.
Ontario to Illinois flights leaving soon
Find last-minute flight options from Ontario to Illinois for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Book one of these great deals on flights from Ontario to Illinois. Tip: verify your flight details before completing your reservation.
One-way flights to Illinois from Ontario
Search for one-way flight options from Ontario to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Users traveling one-way from Ontario to Illinois can select one of these great deals. Users in need of a round-trip flight from Ontario to Illinois instead should update the search form at the top of page.
Find flights from Ontario to Illinois within your budget
Customize your flight search to find flights from Ontario to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Fly from
Fly to
Budget
$210 - $414
Route
Depart
Return
Price
Toronto IslandChicago Midway
YTZ - MDW
YTZMDW
Toronto Island
Mon 7/29
Nonstop1h 47m
Chicago Midway
Sat 8/3
Nonstop1h 42m
Toronto IslandChicago Midway
YTZ - MDW
YTZMDW
Toronto Island
Thu 6/27
Nonstop1h 47m
Chicago Midway
Thu 7/4
Nonstop1h 42m
Toronto Pearson IntlChicago O'Hare Intl
YYZ - ORD
YYZORD
Toronto Pearson Intl
Wed 6/19
Nonstop1h 57m
Chicago O'Hare Intl
Wed 6/26
Nonstop1h 48m
Toronto Pearson IntlChicago O'Hare Intl
YYZ - ORD
YYZORD
Toronto Pearson Intl
Fri 6/14
1 stop7h 04m
Chicago O'Hare Intl
Mon 6/17
1 stop8h 25m
Toronto Pearson IntlChicago O'Hare Intl
YYZ - ORD
YYZORD
Toronto Pearson Intl
Mon 9/30
Nonstop1h 56m
Chicago O'Hare Intl
Sat 10/12
Nonstop1h 43m
Toronto Pearson IntlChicago O'Hare Intl
YYZ - ORD
YYZORD
Toronto Pearson Intl
Tue 7/2
Nonstop1h 56m
Chicago O'Hare Intl
Mon 7/8
1 stop5h 57m
Toronto Pearson IntlChicago O'Hare Intl
YYZ - ORD
YYZORD
Toronto Pearson Intl
Tue 6/18
Nonstop1h 55m
Chicago O'Hare Intl
Fri 6/21
1 stop5h 29m
Montreal Pierre Elliott Trudeau IntlChicago O'Hare Intl
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Mon 7/1
1 stop4h 21m
Chicago O'Hare Intl
Mon 7/8
1 stop4h 59m
Montreal Pierre Elliott Trudeau IntlChicago O'Hare Intl
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Sun 6/23
1 stop11h 40m
Chicago O'Hare Intl
Thu 6/27
1 stop13h 36m
No data available for this route at this time. Please check back soon.
Best time to book a flight from Ontario to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Ontario with our price prediction graph.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated May 30, 2024.
See what other customers who have flown with Delta, United Airlines and Air Canada from Ontario to Illinois have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Related info for your journey
Find useful and relevant information for your journey from Ontario to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to IllinoisSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Ontario to Illinois
Discover the top 4 airlines that operate flights from Ontario to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Search flights from Ontario to Illinois by cabin class
Find flights from Ontario to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from Ontario to Illinois
Find hourly flight availability from Ontario to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 30, 2024.
| 12%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 34%of flight departures | Morning6 am to noon |
| 45%of flight departures | AfternoonNoon to 6 pm |
| 9%of flight departures | Evening6 pm to midnight |
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
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How does Cheapflights help users find flights from Ontario to Illinois?
Cheapflights helps you search for flights from Ontario to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Ontario to Illinois?
Cheapflights simply makes it quick and affordable to book flights from Ontario to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Ontario to Illinois with no change fees?
Yes, we can. To see specific flights from Ontario to Illinois with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Ontario to Illinois become cheaper?
Yes, Cheapflights offers price alerts on Ontario to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.