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Ottawa

$160+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YOW
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
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 July 30, 2026.

This Mytrip deal was found by Cheapflights users on 7/25. 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.
Wed 9/169:55 am
ORD
-
YOW
1 stop13h 25m
Multiple Airlines
Thu 9/176:55 am
YOW
-
ORD
1 stop9h 00m
Multiple Airlines
Deal found 7/25$361
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Wed 9/99:55 am
ORD
-
YOW
1 stop13h 25m
Multiple Airlines
Wed 9/166:55 am
YOW
-
ORD
1 stop13h 53m
Multiple Airlines
Deal found 7/26$365
This Mytrip deal was found by Cheapflights users on 7/27. 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.
Thu 9/1011:05 am
ORD
-
YOW
2 stops12h 15m
Multiple Airlines
Thu 9/176:55 am
YOW
-
ORD
1 stop13h 53m
Multiple Airlines
Deal found 7/27$375
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 9/243:20 pm
MDW
-
YOW
1 stop8h 00m
Multiple Airlines
Sun 9/276:25 pm
YOW
-
MDW
1 stop17h 35m
Multiple Airlines
Deal found 7/27$398
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Thu 8/273:15 pm
MDW
-
YOW
1 stop8h 05m
Multiple Airlines
Sun 8/306:55 am
YOW
-
MDW
1 stop8h 40m
Multiple Airlines
Deal found 7/25$408
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/113:20 pm
MDW
-
YOW
1 stop20h 32m
Porter Airlines
Mon 9/1410:40 am
YOW
-
MDW
1 stop4h 55m
Porter Airlines
Deal found 7/26$439
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/111:45 am
MDW
-
YOW
1 stop5h 07m
Porter Airlines
Tue 9/18:45 pm
YOW
-
MDW
1 stop15h 15m
Porter Airlines
Deal found 7/29$448
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sat 9/1211:45 am
MDW
-
YOW
1 stop6h 22m
Porter Airlines
Sat 9/1910:40 am
YOW
-
MDW
1 stop4h 55m
Porter Airlines
Deal found 7/28$449
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/273:15 pm
MDW
-
YOW
1 stop3h 49m
Multiple Airlines
Thu 9/36:55 am
YOW
-
MDW
1 stop8h 40m
Multiple Airlines
Deal found 7/28$478
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Wed 9/93:20 pm
MDW
-
YOW
1 stop3h 42m
Porter Airlines
Wed 9/168:00 am
YOW
-
MDW
1 stop4h 00m
Porter Airlines
Deal found 7/26$486
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 9/103:20 pm
MDW
-
YOW
1 stop3h 42m
Porter Airlines
Thu 9/178:00 am
YOW
-
MDW
1 stop4h 00m
Porter Airlines
Deal found 7/27$494
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 11/610:35 am
STL
-
YOW
2 stops11h 57m
Multiple Airlines
Mon 11/98:00 am
YOW
-
STL
1 stop12h 39m
Multiple Airlines
Deal found 7/27$589

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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$361
(Mytrip)

One-way from

$160
(Kiwi.com)

Popular in

February

Cheapest in

April

Average price

$725

Good round-trip deal

$661 or less

Good one-way deal

$337 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. 10% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Ottawa.
Search Deals
Price to beat on a one-way 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 July 30, 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

Thu 8/27

3:15 pm-12:20 am

1 stop8h 05m

Ottawa

Sun 8/30

6:55 am-2:35 pm

1 stop8h 40m

$408

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 9/9

11:45 am-5:52 pm

1 stop5h 07m

Ottawa

Wed 9/16

10:40 am-2:35 pm

1 stop4h 55m

$499

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 8/26

3:15 pm-9:44 pm

1 stop5h 29m

Ottawa

Mon 8/31

10:40 am-2:35 pm

1 stop4h 55m

$585

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 9/24

11:45 am-12:20 am

1 stop11h 35m

Ottawa

Sun 9/27

1:20 pm-11:00 am

3 stops22h 40m

$591

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 9/1

7:25 am-1:59 pm

1 stop5h 34m

Ottawa

Sat 9/5

10:37 am-5:06 pm

1 stop7h 29m

$603

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 9/22

1:00 pm-6:59 pm

1 stop4h 59m

Ottawa

Fri 9/25

6:25 am-10:48 am

1 stop5h 23m

$609

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 8/17

10:25 am-5:54 pm

1 stop6h 29m

Ottawa

Mon 8/24

8:45 pm-9:45 am

1 stop14h 00m

$609

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Tue 9/29

8:03 am-2:55 pm

1 stop5h 52m

Ottawa

Sat 10/3

8:40 am-2:20 pm

1 stop6h 40m

$611

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Fri 9/11

12:59 pm-9:35 pm

1 stop7h 36m

Ottawa

Tue 9/15

6:25 am-11:57 am

1 stop6h 32m

$614

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 9/2

7:03 am-8:40 pm

2 stops12h 37m

Ottawa

Tue 9/8

7:00 am-12:44 pm

1 stop6h 44m

$619

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 58 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 $400). Flying from Illinois to Ottawa in June is currently the most expensive (average of $836). 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 July 30, 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 July 30, 2026.

The most flights from USIL to YOW are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

How much does it cost to fly round-trip from Illinois to Ottawa?

Airfare is below average for this route at the moment.
Illinois to Ottawa flights typically cost between $444 and $745 in September.
The cheapest round-trip price found within the last 5 days was $361 on Multiple Airlines (Sep 16-Sep 17).

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 07m. 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 most popular routes from Illinois to Ottawa?

    When deciding which route to take from Illinois to Ottawa consider Chicago O'Hare Intl - Ottawa, Chicago Midway - Ottawa or Lambert-St Louis - 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 Republic Airways (85%), United Airlines (81%) or ANA (78%) 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 $646, our data shows the cheapest flight currently is $337. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $417 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 $400). Flying from Illinois to Ottawa in June is currently the most expensive (average of $836). 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

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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 airline flying from Illinois to Ottawa

Discover the top airline 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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$400Average$670FlexibilityNo cancel feeOn-time69%

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