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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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YOW
May 30 — Jun 61
Sat 5/30
Sat 6/6
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 April 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Thu 5/147:33 pm
ORD
-
YOW
1 stop18h 27m
Multiple Airlines
Mon 5/184:20 pm
YOW
-
ORD
1 stop30h 54m
Multiple Airlines
Deal found 4/26$348
This oojo deal was found by Cheapflights users on 4/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:30 pm
ORD
-
YOW
1 stop11h 05m
WestJet
Mon 5/257:20 am
YOW
-
ORD
1 stop10h 20m
WestJet
Deal found 4/26$350
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sat 5/235:30 pm
ORD
-
YOW
1 stop11h 05m
Multiple Airlines
Wed 5/277:00 am
YOW
-
ORD
2 stops17h 13m
Multiple Airlines
Deal found 4/26$368
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Thu 5/285:11 pm
ORD
-
YOW
1 stop20h 22m
Multiple Airlines
Mon 6/12:20 pm
YOW
-
ORD
2 stops18h 35m
Multiple Airlines
Deal found 4/26$374
This Air Canada deal was found by Cheapflights users on 4/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/22:15 pm
STL
-
YOW
1 stop6h 01m
Air Canada
Thu 6/43:00 pm
YOW
-
STL
1 stop6h 25m
Air Canada
Deal found 4/27$378
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Wed 5/271:49 pm
ORD
-
YOW
1 stop21h 26m
Multiple Airlines
Wed 6/37:00 am
YOW
-
ORD
2 stops30h 24m
Multiple Airlines
Deal found 4/29$380
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:00 am
STL
-
YOW
1 stop9h 38m
United Airlines
Fri 6/196:25 am
YOW
-
STL
1 stop10h 21m
United Airlines
Deal found 4/29$381
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:05 pm
STL
-
YOW
1 stop5h 36m
Air Canada
Sat 5/163:00 pm
YOW
-
STL
1 stop6h 25m
Air Canada
Deal found 4/29$384
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
STL
-
YOW
2 stops11h 48m
United Airlines
Wed 6/176:25 am
YOW
-
STL
1 stop10h 21m
United Airlines
Deal found 4/28$391
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Wed 5/275:30 pm
ORD
-
YOW
1 stop11h 05m
WestJet
Wed 6/37:20 am
YOW
-
ORD
1 stop10h 20m
WestJet
Deal found 4/29$392
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/81:13 pm
STL
-
YOW
1 stop7h 22m
United Airlines
Sat 8/156:00 pm
YOW
-
STL
1 stop6h 37m
United Airlines
Deal found 4/29$392
This FlightHub deal was found by Cheapflights users on 4/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:30 pm
ORD
-
YOW
1 stop11h 05m
WestJet
Tue 5/264:15 pm
YOW
-
ORD
1 stop25h 25m
WestJet
Deal found 4/26$402

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 April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$348
(Kiwi.com)

One-way from

$160
(United Airlines)

Popular in

February

Cheapest in

April

Average price

$397

Good round-trip deal

$576 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. 20% potential increase in price ($144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 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

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 6/2

6:00 am-4:38 pm

1 stop9h 38m

Ottawa

Thu 6/4

6:25 am-12:11 pm

1 stop6h 46m

$381

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 5/12

1:05 pm-7:41 pm

1 stop5h 36m

Ottawa

Sat 5/16

3:00 pm-8:25 pm

1 stop6h 25m

$384

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 6/10

6:00 am-6:48 pm

2 stops11h 48m

Ottawa

Wed 6/17

5:50 pm-11:35 pm

1 stop6h 45m

$391

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 8/8

1:13 pm-9:35 pm

1 stop7h 22m

Ottawa

Sat 8/15

6:00 pm-11:37 pm

1 stop6h 37m

$392

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 5/26

3:20 pm-12:54 pm

1 stop20h 34m

Ottawa

Thu 6/11

11:00 am-2:35 pm

1 stop4h 35m

$420

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 6/11

6:00 am-10:05 pm

1 stop15h 05m

Ottawa

Fri 6/19

5:10 am-12:11 pm

2 stops8h 01m

$470

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Fri 8/28

6:00 am-5:10 pm

2 stops10h 10m

Ottawa

Sun 8/30

6:00 am-3:38 pm

2 stops10h 38m

$480

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 5/25

10:30 am-12:54 pm

1 stop25h 24m

Ottawa

Mon 6/1

6:55 am-2:35 pm

1 stop8h 40m

$514

BloomingtonOttawa

BMI - YOW

BMIYOW

Bloomington-Normal

Mon 6/1

7:15 pm-2:17 pm

2 stops18h 02m

Ottawa

Wed 6/3

10:44 am-2:23 pm

1 stop4h 39m

$520

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 7/29

3:20 pm-12:54 pm

1 stop20h 34m

Ottawa

Sun 8/9

6:25 pm-9:40 am

1 stop16h 15m

$523

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 59 resultsSorted by cheapest first
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6

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, June is the cheapest month in which you can book a flight from Illinois to Ottawa (average of $127). Flying from Illinois to Ottawa in February is currently the most expensive (average of $693). 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 April 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 April 30, 2026.

The most flights from USIL to YOW are scheduled on a Monday (12 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 on average).

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

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 36m. There are 878 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 (75%), ANA (72%) or Emirates (72%) 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 $633, 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 $380 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, June is the cheapest month in which you can book a flight from Illinois to Ottawa (average of $127). Flying from Illinois to Ottawa in February is currently the most expensive (average of $693). 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 April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$181Average$349FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$257Average$536FlexibilityNo cancel feeOn-time69%

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