$162+ Cheap flights from Ottawa (YOW) to Illinois
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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Ottawa to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ottawa to Illinois
Keep the following information in mind while searching for Ottawa to Illinois flight deals. Data was last updated February 20, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $333 (Mytrip) |
One-way from | $162 (Kiwi.com) |
Popular in | November |
Cheapest in | April |
Average price | $450 |
Good round-trip deal | $324 or less |
Good one-way deal | $227 or less |
Find flight deals from Ottawa to Illinois
Cheapest flights from Ottawa to IllinoisExplore the most affordable flight options available from Ottawa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.
Explore the most affordable flight options available from Ottawa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This WestJet deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This WestJet deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from Ottawa to Illinois within your budget
Customize your flight search to find flights from Ottawa 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 2,558,603 searches. Data last updated February 20, 2025.
Fly from
Fly to
Route
Depart
Return
Price
OttawaChicago
YOW - ORD
YOWORD
Ottawa
Wed 3/19
5:55 am-11:58 pm
2 stops19h 03m
Chicago O'Hare Intl
Wed 3/26
9:08 pm-12:09 am
2 stops26h 01m
OttawaChicago
YOW - MDW
YOWMDW
Ottawa
Fri 5/9
12:25 pm-4:24 pm
1 stop4h 59m
Chicago Midway
Sun 5/18
9:15 am-4:34 pm
1 stop6h 19m
OttawaChicago
YOW - ORD
YOWORD
Ottawa
Sun 5/4
6:00 am-9:52 am
1 stop4h 52m
Chicago O'Hare Intl
Sat 5/10
8:40 am-1:45 pm
1 stop4h 05m
OttawaChicago
YOW - MDW
YOWMDW
Ottawa
Wed 3/19
8:40 am-5:23 pm
2 stops9h 43m
Chicago Midway
Wed 3/26
11:15 am-5:09 pm
1 stop4h 54m
OttawaChicago
YOW - ORD
YOWORD
Ottawa
Sat 5/10
5:25 pm-6:54 pm
Nonstop2h 29m
Chicago O'Hare Intl
Fri 5/16
1:55 pm-5:06 pm
Nonstop2h 11m
OttawaChicago
YOW - MDW
YOWMDW
Ottawa
Thu 3/20
5:55 am-12:36 pm
2 stops7h 41m
Chicago Midway
Thu 3/27
2:55 pm-12:09 am
2 stops8h 14m
OttawaChicago
YOW - ORD
YOWORD
Ottawa
Thu 5/1
6:00 am-4:44 pm
1 stop11h 44m
Chicago O'Hare Intl
Mon 5/5
5:30 pm-4:20 pm
2 stops21h 50m
OttawaSt. Louis
YOW - STL
YOWSTL
Ottawa
Thu 3/20
6:25 am-11:02 am
1 stop5h 37m
Lambert-St Louis
Thu 3/27
11:05 am-5:06 pm
1 stop5h 01m
OttawaDecatur
YOW - DEC
YOWDEC
Ottawa
Sun 4/6
6:33 am-2:00 pm
1 stop8h 27m
Decatur Arpt
Sun 4/13
9:50 am-5:06 pm
1 stop6h 16m
OttawaSt. Louis
YOW - STL
YOWSTL
Ottawa
Tue 5/13
6:05 am-3:47 pm
2 stops10h 42m
Lambert-St Louis
Sat 5/17
3:43 pm-9:35 pm
1 stop4h 52m
Best time to book a flight from Ottawa to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Ottawa with our price prediction graph.
Travel insights for flights from Ottawa to Illinois
Get recent, data-driven insights about flights from Ottawa to Illinois including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Ottawa to Illinois?
Currently, August is the cheapest month in which you can book a flight from Ottawa to Illinois (average of $245). Flying from Ottawa to Illinois in March is currently the most expensive (average of $321). 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.
What is the cheapest time of day to fly from YOW to IL?
Find hourly flight availability from Ottawa 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 February 20, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ottawa to Illinois as you normally would.
Weekly flight availability from Ottawa to Illinois
Explore weekly flight availability from Ottawa to Illinois. 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 February 20, 2025.
The most flights from YOW to USIL are scheduled on a Tuesday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
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 February 20, 2025.
Read through reviews of airlines operating flights from Ottawa to Illinois, such as Delta, Porter Airlines and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Comfort
Crew
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Crew
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Crew
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Crew
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Crew
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Crew
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Ottawa 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 Ottawa to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Ottawa to Illinois
Discover the top 3 airlines that operate flights from Ottawa 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 2,558,603 searches. Data last updated February 20, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$433 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$406 | Average$551 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$423 | Average$554 | FlexibilityNo cancel fee | On-time67% |