Cheap flights from Ontario (ONT) to Chicago (CHI) from $62
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 6/4. 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.
The best prices from Ontario to Chicago are usually found in November or October, booked 25 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday
Cheap flight deals from Ontario to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 13, 2024.
Popular in | July |
|---|---|
Cheapest in | November |
Round-trip from | $223 |
One-way from | $62 |
What is the cheapest day to fly round-trip from Ontario to Chicago?
Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 21% when planning your travel around this day of the week.
How far in advance should I book a flight from Ontario to Chicago?
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 31 days in advance, which can save you up to 73% on flights from Ontario to Chicago compared to booking the week you need them. Waiting 31 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $319. For sooner than that we have options available in the next 3 days from $510.
What is the cheapest month to fly from Ontario to Chicago?
Due to multiple factors, expect to potentially pay more when booking in March. For low rates, January can be a great choice for travel to Chicago. Flights to Chicago from Ontario in January are about $314 on average during January, but can be found for as low as $135.
When is the cheapest time to fly from Ontario to Chicago (ONT - CHI)?
Unlike at noon, when flights are generally more expensive, you can save up to 22% on flights from Ontario to Chicago by exploring options for tickets in the afternoon.
Cheap Frontier flights from Ontario to Chicago
Explore cheap flight options specifically provided by Frontier for the route between Ontario and Chicago. 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 2,633,403 searches. Data last updated May 13, 2024.
Peruse some of the lowest-priced Frontier flights we've found from Ontario to Chicago. Make sure to check back often as deals are often changing.
Cheap Delta flights from Ontario to Chicago
Explore cheap flight options specifically provided by Delta for the route between Ontario and Chicago. 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 2,633,403 searches. Data last updated May 13, 2024.
Browse through some of the cheapest Delta flights traveling from Ontario to Chicago. Check back soon if you're not seeing flights that suit your needs.
Cheap Ontario to Chicago flights in May & June 2024
Find cheap flight options from Ontario to Chicago specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,633,403 searches. Prices were last updated on May 13, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to Chicago in 2024. More deals are always being added, so be sure to check back regularly.
Ontario to Chicago 2024 flight deals
Discover exclusive flight deals for travel between Ontario and Chicago in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 13, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to Chicago in 2024. More deals are always being added, so be sure to check back regularly.
Ontario to Chicago flights leaving soon
Find last-minute flight options from Ontario to Chicago 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 2,633,403 searches. Data last updated May 13, 2024.
Have a look at some of the last-minute flights available departing from Ontario to Chicago. To prevent any unwanted surprises, users should verify their flight info before booking.
One-way flights to Chicago from Ontario
Search for one-way flight options from Ontario to Chicago. 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 2,633,403 searches. Data last updated May 13, 2024.
Some of the best available deals we've found on one-way flights from Ontario to Chicago. Users in need of a round-trip flight from Ontario to Chicago instead should update the search form at the top of page.
Find flights from Ontario to Chicago within your budget
Customize your flight search to find flights from Ontario to Chicago 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 2,633,403 searches. Data last updated May 13, 2024.
Fly from
Fly to
Budget
$138 - $321
Route
Depart
Return
Price
OntarioChicago O'Hare Intl
ONT - ORD
ONTORD
Ontario
Wed 8/21
1 stop6h 12m
Chicago O'Hare Intl
Thu 8/22
1 stop6h 15m
OntarioChicago Midway
ONT - MDW
ONTMDW
Ontario
Tue 6/4
1 stop9h 01m
Chicago Midway
Sat 6/8
1 stop12h 13m
OntarioChicago O'Hare Intl
ONT - ORD
ONTORD
Ontario
Sat 5/25
1 stop9h 19m
Chicago O'Hare Intl
Sat 6/1
1 stop8h 03m
OntarioChicago O'Hare Intl
ONT - ORD
ONTORD
Ontario
Mon 8/19
1 stop6h 12m
Chicago O'Hare Intl
Tue 8/20
1 stop6h 32m
OntarioChicago Midway
ONT - MDW
ONTMDW
Ontario
Mon 8/12
1 stop16h 13m
Chicago Midway
Mon 8/19
1 stop16h 47m
OntarioChicago Midway
ONT - MDW
ONTMDW
Ontario
Fri 8/23
1 stop7h 58m
Chicago Midway
Tue 8/27
1 stop8h 32m
OntarioChicago O'Hare Intl
ONT - ORD
ONTORD
Ontario
Wed 6/5
2 stops12h 55m
Chicago O'Hare Intl
Wed 6/12
2 stops11h 35m
OntarioChicago O'Hare Intl
ONT - ORD
ONTORD
Ontario
Tue 6/4
1 stop6h 31m
Chicago O'Hare Intl
Tue 6/11
2 stops17h 58m
OntarioChicago O'Hare Intl
ONT - ORD
ONTORD
Ontario
Tue 7/2
1 stop7h 58m
Chicago O'Hare Intl
Wed 7/3
1 stop8h 13m
When is the best time to book a flight from Ontario to Chicago?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Chicago. Price data was last updated on May 10, 2024.
The best time to book flights from Ontario to Chicago is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
When is the cheapest time to fly from Ontario to Chicago?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Chicago. Price data was last updated on May 12, 2024.
Average price of flights to Chicago by month
Plan your trip from Ontario to Chicago by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Chicago is currently $67 while a round-trip flight costs $188. Price data was last updated on May 12, 2024.
Currently, February is the cheapest month in which you can book a flight from Ontario to Chicago (average of $244). Flying from Ontario to Chicago in June is currently the most expensive (average of $342). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
January
$248
February
$244
March
$280
April
$258
May
$278
June
$342
July
$327
August
$274
September
$258
October
$248
November
$270
December
$248
Temperature and rainfall in Chicago by month
Plan your trip to Chicago by taking into account the average temperature and rainfall totals by month.
CHI Temperature | 23 - 73.4 °F |
|---|
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated May 13, 2024.
To help decide which airline to fly from Ontario to Chicago, see what other customers have to say about Frontier, Delta and Alaska Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Comfort
Food
Overall
Boarding
Crew
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Entertainment
Comfort
Food
Overall
Boarding
Crew
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Entertainment
Comfort
Food
Overall
Boarding
Crew
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Entertainment
Comfort
Food
Overall
Boarding
Crew
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Entertainment
Comfort
Food
Overall
Boarding
Crew
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Entertainment
Comfort
Food
Overall
Boarding
Crew
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Related info for your journey
Find useful and relevant information for your journey from Ontario to Chicago. 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 ChicagoSee 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 5 airlines flying from Ontario to Chicago
Discover the top 5 airlines that operate flights from Ontario to Chicago. 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 2,633,403 searches. Data last updated May 13, 2024.
Search flights from Ontario to Chicago by cabin class
Find flights from Ontario to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from Ontario to Chicago
Find hourly flight availability from Ontario to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 13, 2024.
| 0%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 100%of flight departures | Morning6 am to noon |
| 0%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Weekly flight availability from Ontario to Chicago
Explore weekly flight availability from Ontario to Chicago. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 13, 2024.
| Sunday | 1daily flight |
|---|---|
| Monday | 2daily flights |
| Tuesday | 2daily flights |
| Wednesday | 2daily flights |
| Thursday | 2daily flights |
| Friday | 2daily flights |
| Saturday | 2daily flights |
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
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ontario to Chicago?
When you search for this flight from Ontario to Chicago, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ontario to Chicago?
Cheapflights helps you find that perfect flight to Chicago from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Ontario to Chicago with no change fees?
Yes, we can. To see specific flights from Ontario to Chicago 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 Chicago become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Chicago from Ontario today and book when prices fit your budget.