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Cheap flights from Illinois to Ottawa from C$ 140

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YOW
15 Apr — 22 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Ottawa

Enter your travel dates to find the best prices.

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 16 March 2026.

Thu 9/411:00 a.m.
MDW
-
YOW
1 stop5h 04m
Porter Airlines
Sat 11/48:40 a.m.
YOW
-
MDW
1 stop4h 30m
Porter Airlines
Deal found 15/3C$ 376
Thu 16/411:00 a.m.
MDW
-
YOW
1 stop6h 24m
Porter Airlines
Mon 20/46:45 a.m.
YOW
-
MDW
1 stop4h 30m
Porter Airlines
Deal found 16/3C$ 384
Wed 8/46:01 p.m.
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Wed 15/47:00 a.m.
YOW
-
ORD
1 stop15h 17m
Multiple Airlines
Deal found 11/3C$ 453
Thu 16/47:30 a.m.
MDW
-
YOW
2 stops9h 54m
Multiple Airlines
Mon 20/46:45 a.m.
YOW
-
MDW
1 stop4h 30m
Multiple Airlines
Deal found 16/3C$ 464
Thu 16/47:30 a.m.
MDW
-
YOW
1 stop8h 55m
Multiple Airlines
Sun 19/45:40 a.m.
YOW
-
MDW
1 stop10h 40m
Multiple Airlines
Deal found 13/3C$ 469
Wed 1/46:01 p.m.
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Mon 6/43:55 p.m.
YOW
-
ORD
1 stop9h 27m
Multiple Airlines
Deal found 13/3C$ 476
Fri 3/47:31 p.m.
ORD
-
YOW
1 stop16h 04m
Multiple Airlines
Wed 8/46:45 a.m.
YOW
-
ORD
2 stops18h 37m
Multiple Airlines
Deal found 12/3C$ 483
Fri 10/44:05 p.m.
MDW
-
YOW
1 stop5h 24m
Porter Airlines
Mon 13/46:45 a.m.
YOW
-
MDW
1 stop4h 30m
Porter Airlines
Deal found 15/3C$ 486
Tue 31/36:01 p.m.
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Mon 6/45:40 a.m.
YOW
-
ORD
2 stops27h 21m
Multiple Airlines
Deal found 14/3C$ 488
Thu 16/42:09 p.m.
ORD
-
YOW
1 stop21h 26m
Multiple Airlines
Mon 20/47:00 a.m.
YOW
-
ORD
1 stop27h 36m
Multiple Airlines
Deal found 15/3C$ 490
Fri 3/46:01 p.m.
ORD
-
YOW
1 stop17h 34m
Multiple Airlines
Mon 6/43:35 p.m.
YOW
-
ORD
2 stops17h 26m
Multiple Airlines
Deal found 14/3C$ 495
Fri 1/510:25 a.m.
MDW
-
YOW
1 stop12h 55m
Multiple Airlines
Sun 3/56:25 p.m.
YOW
-
MDW
1 stop16h 15m
Multiple Airlines
Deal found 11/3C$ 495

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 16 March 2026.

Round-trip from

C$ 376

One-way from

C$ 140

Popular in

February

Cheapest in

May

Average price

C$ 724
Porter Airlines
  • Porter Airlines
  • 9/4-11/4
  • 2 total stops
  • 9h 34m total
  • Illinois to Ottawa
Search Deals
15/4
  • 15/4
  • 1 total stop
  • 8h 55m total
  • Illinois to Ottawa
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 274 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 629,999 searches. Data last updated 16 March 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 16/4

11:00 a.m.-6:24 p.m.

1 stop6h 24m

Ottawa

Mon 20/4

6:45 a.m.-10:15 a.m.

1 stop4h 30m

C$ 384

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 10/4

4:05 p.m.-10:29 p.m.

1 stop5h 24m

Ottawa

Mon 13/4

6:45 a.m.-10:15 a.m.

1 stop4h 30m

C$ 486

BloomingtonOttawa

BMI - YOW

BMIYOW

Bloomington-Normal

Sat 9/5

9:41 a.m.-9:35 p.m.

1 stop10h 54m

Ottawa

Wed 13/5

10:44 a.m.-11:59 p.m.

1 stop14h 15m

C$ 679

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 9/4

11:00 a.m.-5:04 p.m.

1 stop5h 04m

Ottawa

Thu 16/4

5:40 a.m.-5:58 p.m.

2 stops13h 18m

C$ 734

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 8/6

3:20 p.m.-8:04 p.m.

1 stop3h 44m

Ottawa

Sat 13/6

3:30 p.m.-9:40 a.m.

1 stop19h 10m

C$ 741

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 12/6

3:20 p.m.-8:04 p.m.

1 stop3h 44m

Ottawa

Sun 21/6

11:00 a.m.-2:35 p.m.

1 stop4h 35m

C$ 782

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 13/5

10:25 a.m.-5:54 p.m.

1 stop6h 29m

Ottawa

Sun 17/5

11:00 a.m.-2:35 p.m.

1 stop4h 35m

C$ 827

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sat 15/8

10:25 a.m.-7:09 p.m.

1 stop7h 44m

Ottawa

Sun 16/8

11:00 a.m.-2:35 p.m.

1 stop4h 35m

C$ 932

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 7/4

9:35 a.m.-6:26 p.m.

2 stops7h 51m

Ottawa

Thu 9/4

6:55 p.m.-8:53 a.m.

2 stops14h 58m

C$ 1,015

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 13/5

9:50 a.m.-8:05 a.m.

1 stop21h 15m

Ottawa

Sun 17/5

8:40 a.m.-2:20 p.m.

1 stop6h 40m

C$ 1,037

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/3

Showing 1-10 of 39 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 C$ 136). Flying from Illinois to Ottawa in July is currently the most expensive (average of C$ 388). 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 16 March 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 16 March 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?

    Most people fly into Ottawa (YOW) if they book a flight to Ottawa from Illinois. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • How long is the flight from Illinois to Ottawa?

    Airlines like Porter Airlines and United Airlines fly from Illinois to Ottawa in about 6h 24m. The time it takes to get you to your destination can typically vary by up to 4h 30m. Illinois and Ottawa are separated by a distance of 1048 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 Bloomington-Normal - 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 (72%), Republic Airways (72%) or Emirates (68%) as they are the most reliable in getting you off to your destination on time.

  • 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 C$ 136). Flying from Illinois to Ottawa in July is currently the most expensive (average of C$ 388). 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

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Perth
Wakefield
Pembroke
Smiths Falls

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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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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 Illinois to Ottawa?

When you search for this flight from Illinois to Ottawa, 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 Illinois to Ottawa?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Illinois to Ottawa.

Can Cheapflights find flights from Illinois to Ottawa with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Illinois to Ottawa, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Illinois to Ottawa become cheaper?

Not ready to book yet? You can track prices for flights from Illinois to Ottawa on Cheapflights with our Price Alert feature and get notified when better prices are available.

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