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Ottawa

$161+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YOW
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap 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 31, 2025.

Round-trip from

$319
(Kiwi.com)

One-way from

$161
(Mytrip)

Popular in

November

Cheapest in

May

Average price

$541

Good round-trip deal

$499 or less

Good one-way deal

$220 or less
From Illinois to Ottawa
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One-way flight from Illinois to Ottawa
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Highest demand for flights based on searches. 8% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Illinois to Ottawa.
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Price to beat on a one-way flight from Illinois to Ottawa.
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Find 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 31, 2025.

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.
Thu 9/49:35 amMDW - YOW
1 stop13h 47mMultiple Airlines
Sun 9/75:55 amYOW - MDW
1 stop27h 44mMultiple Airlines
Deal found 7/29$319
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.
Thu 9/45:17 pmORD - YOW
1 stop22h 40mMultiple Airlines
Sun 9/74:25 pmYOW - ORD
1 stop24h 47mMultiple Airlines
Deal found 7/29$324
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:30 pmORD - YOW
1 stop12h 15mWestJet
Sun 10/57:50 amYOW - ORD
1 stop9h 53mWestJet
Deal found 7/29$336
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Fri 10/179:35 amMDW - YOW
1 stop5h 59mPorter Airlines
Mon 10/201:25 pmYOW - MDW
1 stop3h 59mPorter Airlines
Deal found 7/31$359
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:06 pmORD - YOW
Nonstop2h 29mUnited Airlines
Sun 9/76:33 amYOW - ORD
Nonstop2h 27mUnited Airlines
Deal found 7/29$374
This Flightnetwork deal was found by Cheapflights users on 7/30. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:20 pmORD - YOW
1 stop6h 15mAir Canada
Mon 8/252:25 pmYOW - ORD
1 stop6h 51mAir Canada
Deal found 7/30$436
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Sat 8/309:50 amSTL - YOW
3 stops13h 32mMultiple Airlines
Sat 9/611:50 amYOW - STL
2 stops22h 50mMultiple Airlines
Deal found 7/31$530
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 9/27:04 pmSTL - YOW
1 stop21h 02mUnited Airlines
Wed 9/106:33 amYOW - STL
1 stop8h 46mUnited Airlines
Deal found 7/31$621
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:35 amMDW - YOW
2 stops13h 47mDelta
Sun 9/285:55 amYOW - MDW
2 stops7h 33mDelta
Deal found 7/29$696
This Delta deal was found by Cheapflights users on 7/31. 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.
Sun 9/141:26 pmSTL - YOW
2 stops9h 56mDelta
Sun 9/215:55 amYOW - STL
2 stops11h 10mDelta
Deal found 7/31$937
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Sun 8/31:30 pmSTL - YOW
1 stop5h 45mAir Canada
Sun 8/101:55 pmYOW - STL
1 stop6h 50mAir Canada
Deal found 7/30$1,247
This FlightHub deal was found by Cheapflights users on 7/30. 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.
Sun 8/310:46 amSTL - YOW
2 stops12h 36mWestJet
Sun 8/105:55 amYOW - STL
2 stops13h 11mWestJet
Deal found 7/30$1,400

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 31, 2025.
Use the filters below to find and compare flights from Illinois to Ottawa that are best for you.

Fly from

Illinois

Fly to

Ottawa

Route

Depart

Return

Price

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 9/4

9:35 am-12:22 am

1 stop13h 47m

Ottawa

Sun 9/7

5:55 am-8:39 am

1 stop27h 44m

$319

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 9/4

5:17 pm-4:57 pm

1 stop22h 40m

Ottawa

Sun 9/7

4:25 pm-4:12 pm

1 stop24h 47m

$324

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 10/2

5:30 pm-6:45 am

1 stop12h 15m

Ottawa

Sun 10/5

7:50 am-4:43 pm

1 stop9h 53m

$336

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 10/17

9:35 am-4:34 pm

1 stop5h 59m

Ottawa

Mon 10/20

1:25 pm-4:24 pm

1 stop3h 59m

$359

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 9/4

6:06 pm-9:35 pm

Nonstop2h 29m

Ottawa

Sun 9/7

6:33 am-8:00 am

Nonstop2h 27m

$374

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 8/24

6:20 pm-1:35 am

1 stop6h 15m

Ottawa

Mon 8/25

2:25 pm-8:16 pm

1 stop6h 51m

$436

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 8/30

9:50 am-12:22 am

3 stops13h 32m

Ottawa

Sat 9/6

11:50 am-9:40 am

2 stops22h 50m

$530

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 9/2

7:04 pm-5:06 pm

1 stop21h 02m

Ottawa

Wed 9/10

6:33 am-2:19 pm

1 stop8h 46m

$621

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sat 9/20

9:35 am-12:22 am

2 stops13h 47m

Ottawa

Sun 9/28

5:55 am-12:28 pm

2 stops7h 33m

$696

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 9/14

1:26 pm-12:22 am

2 stops9h 56m

Ottawa

Sun 9/21

5:55 am-4:05 pm

2 stops11h 10m

$937

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 18 results
1
2

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, January is the cheapest month in which you can book a flight from Illinois to Ottawa (average of $294). Flying from Illinois to Ottawa in September is currently the most expensive (average of $428). 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 31, 2025.

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 31, 2025.

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

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. 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 Ottawa. Reviews last updated July 31, 2025.
Read reviews from past customers who have flown Porter Airlines, Delta, and United Airlines from Illinois to Ottawa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
318 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
318 reviews
Porter Airlines
8.0
Very good
318 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Delta
8.0
Very good
7,981 reviews
Porter Airlines
8.0
Very good
318 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,900 reviews
Porter Airlines
8.0
Very good
318 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
WestJet
7.2
Good
2,978 reviews
Porter Airlines
8.0
Very good
318 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Air Canada
7.1
Good
9,851 reviews
Porter Airlines
8.0
Very good
318 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.6

Crew

8.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $164. 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, 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 GoJet (80%), Air Canada (80%) or Air New Zealand (80%) 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 $467, our data shows the cheapest flight currently is $155. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $324 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, January is the cheapest month in which you can book a flight from Illinois to Ottawa (average of $294). Flying from Illinois to Ottawa in September is currently the most expensive (average of $428). 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 3 airlines flying from Illinois to Ottawa

Discover the top 3 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$189Average$395FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$189Average$400FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$236Average$622FlexibilityNo cancel feeOn-time69%

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