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Ottawa

$116+ Cheap flights from Illinois to Ottawa (YOW)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YOW
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap flight deals from Illinois to Ottawa

Cheapest flights from Illinois to Ottawa
Explore the most affordable flight options available from Illinois to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Trip.com deal was found by Cheapflights users on 3/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:05 pm
MDW
-
YOW
1 stop5h 24m
Porter Airlines
Mon 4/136:45 am
YOW
-
MDW
1 stop4h 30m
Porter Airlines
Deal found 3/5$254
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Tue 3/318:06 am
ORD
-
YOW
1 stop8h 19m
Multiple Airlines
Wed 4/157:00 am
YOW
-
ORD
1 stop15h 17m
Multiple Airlines
Deal found 3/6$318
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Fri 4/102:20 pm
ORD
-
YOW
1 stop9h 20m
Multiple Airlines
Mon 4/133:55 pm
YOW
-
ORD
1 stop9h 27m
Multiple Airlines
Deal found 3/5$321
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Fri 4/36:01 pm
ORD
-
YOW
1 stop17h 34m
Multiple Airlines
Mon 4/64:45 pm
YOW
-
ORD
2 stops16h 16m
Multiple Airlines
Deal found 3/5$335
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Tue 4/211:27 pm
ORD
-
YOW
1 stop26h 58m
Multiple Airlines
Sat 4/257:00 am
YOW
-
ORD
1 stop15h 17m
Multiple Airlines
Deal found 3/9$336
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Tue 3/319:30 am
MDW
-
YOW
1 stop6h 55m
Multiple Airlines
Wed 4/157:00 am
YOW
-
MDW
2 stops13h 31m
Multiple Airlines
Deal found 3/6$341
This Booking.com deal was found by Cheapflights users on 3/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:00 pm
STL
-
YOW
1 stop6h 51m
Air Canada
Sun 5/107:00 am
YOW
-
STL
1 stop6h 06m
Air Canada
Deal found 3/10$345
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Tue 4/217:30 am
MDW
-
YOW
1 stop8h 55m
Multiple Airlines
Tue 4/287:00 am
YOW
-
MDW
2 stops31h 00m
Multiple Airlines
Deal found 3/8$350
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Mon 4/207:30 am
MDW
-
YOW
1 stop8h 55m
Multiple Airlines
Mon 4/273:35 pm
YOW
-
MDW
2 stops22h 25m
Multiple Airlines
Deal found 3/6$354
This Air Canada deal was found by Cheapflights users on 3/5. 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.
Thu 5/141:00 pm
STL
-
YOW
1 stop6h 51m
Air Canada
Sun 5/172:35 pm
YOW
-
STL
1 stop6h 50m
Air Canada
Deal found 3/5$358
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Sun 4/1912:47 pm
ORD
-
YOW
1 stop23h 28m
Multiple Airlines
Sun 4/264:15 pm
YOW
-
ORD
2 stops42h 47m
Multiple Airlines
Deal found 3/5$363
This Air Canada deal was found by Cheapflights users on 3/5. 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.
Wed 5/131:00 pm
STL
-
YOW
1 stop6h 51m
Air Canada
Mon 5/187:00 am
YOW
-
STL
1 stop6h 06m
Air Canada
Deal found 3/5$363

Find flight deals from Illinois to Ottawa

Keep the following information in mind while searching for Illinois to Ottawa flight deals. Data was last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$254
(Trip.com)

One-way from

$116
(oojo)

Popular in

February

Cheapest in

May

Average price

$528

Good round-trip deal

$465 or less
Provider with most accurate pricing for Chicago (CHI)-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Ottawa flights.
Search Deals
From Illinois to Ottawa
Search Deals
One-way flight from Illinois to Ottawa
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Ottawa.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Ottawa 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 March 10, 2026.
Use the filters below to find and compare flights from Illinois to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 4/10

4:05 pm-10:29 pm

1 stop5h 24m

Ottawa

Mon 4/13

6:45 am-10:15 am

1 stop4h 30m

$254

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 4/21

7:30 am-5:25 pm

1 stop8h 55m

Ottawa

Tue 4/28

7:00 am-1:00 pm

2 stops31h 00m

$350

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 4/20

7:30 am-5:25 pm

1 stop8h 55m

Ottawa

Mon 4/27

3:55 pm-1:00 pm

1 stop22h 05m

$356

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 5/14

1:00 pm-8:51 pm

1 stop6h 51m

Ottawa

Sun 5/17

2:35 pm-8:25 pm

1 stop6h 50m

$358

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 3/31

9:30 am-5:25 pm

1 stop6h 55m

Ottawa

Wed 4/15

6:55 pm-10:15 am

1 stop16h 20m

$390

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 4/20

9:10 am-5:07 pm

1 stop6h 57m

Ottawa

Wed 4/22

5:25 pm-9:13 pm

1 stop4h 48m

$392

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 4/7

11:15 am-10:05 pm

2 stops9h 50m

Ottawa

Tue 4/14

5:25 pm-9:52 pm

1 stop5h 27m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 7/15

8:55 am-3:10 pm

1 stop5h 15m

Ottawa

Sat 7/25

9:00 am-2:02 pm

1 stop6h 02m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 4/15

9:10 am-5:07 pm

1 stop6h 57m

Ottawa

Sun 4/19

5:25 pm-9:52 pm

1 stop5h 27m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 3/24

7:40 am-4:30 pm

2 stops7h 50m

Ottawa

Wed 3/25

5:11 pm-9:42 pm

1 stop5h 31m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 49 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Ottawa

What is the cheapest month to book a flight from Illinois to Ottawa?

Currently, April is the cheapest month in which you can book a flight from Illinois to Ottawa (average of $99). Flying from Illinois to Ottawa in July is currently the most expensive (average of $283). 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 IL to YOW?

Find hourly flight availability from Illinois to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Ottawa as you normally would.

Weekly flight availability from Illinois to Ottawa

Explore weekly flight availability from Illinois to Ottawa. 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 March 10, 2026.

The most flights from USIL to YOW are scheduled on a Monday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ottawa from Illinois?

    If you book a flight to Ottawa from Illinois, you will be flying to Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa.

  • How long is the flight from Illinois to Ottawa?

    Departing from Illinois to Ottawa will take you 5h 24m. There are 651 mi between Illinois and Ottawa. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Ottawa one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $127. However, be on the lookout for offers from Porter Airlines and United Airlines, as they are both options that can get you from Illinois to Ottawa for a low price.

  • What are the most popular routes from Illinois to Ottawa?

    When deciding which route to take from Illinois to Ottawa consider Chicago O'Hare Intl - Ottawa, Lambert-St Louis - Ottawa or Chicago Midway - Ottawa as they are the most popular.

  • What are the most reliable airlines from Illinois to Ottawa?

    No one likes to see their flight delayed. When booking a flight from Illinois to Ottawa consider choosing ANA (74%), Republic Airways (74%) or Emirates (67%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Ottawa?

    While on average a flight from Illinois to Ottawa is generally $511, our data shows the cheapest flight currently is $340. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $367 for that flight.

  • Can I find deals for flights from Illinois to Ottawa that include hotel bookings?

    Yes. In addition to deals on Illinois to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Ottawa.

  • Can I find deals for business class flights from Illinois to Ottawa?

    Yes. Cheapflights offers flight deals from Illinois to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Ottawa?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Ottawa (average of $99). Flying from Illinois to Ottawa in July is currently the most expensive (average of $283). 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.

See more FAQs

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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Alternative routes for Illinois to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Illinois to Ottawa

Discover the top 2 airlines that operate flights from Illinois to Ottawa. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$181Average$300FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$257Average$539FlexibilityNo cancel feeOn-time69%

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