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Ottawa

$142+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YOW
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$312
(Kiwi.com)

One-way from

$142
(Trip.com)

Popular in

November

Cheapest in

July

Average price

$487

Good round-trip deal

$498 or less

Good one-way deal

$257 or less
Provider with most accurate pricing for Chicago (CHI)-Ottawa flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Ottawa flights.
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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. 5% potential increase in price ($25 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 April 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 April 30, 2025.

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.
Thu 5/299:40 amMDW - YOW
1 stop13h 42mMultiple Airlines
Sun 6/15:55 amYOW - MDW
1 stop11h 59mMultiple Airlines
Deal found 4/29$312
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/269:40 amMDW - YOW
1 stop5h 53mPorter Airlines
Mon 6/212:35 pmYOW - MDW
1 stop5h 19mPorter Airlines
Deal found 4/29$339
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/134:43 pmORD - YOW
1 stop6h 39mMultiple Airlines
Fri 6/205:55 amYOW - ORD
1 stop10h 55mMultiple Airlines
Deal found 4/29$346
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.
Tue 5/275:45 pmSTL - YOW
1 stop22h 21mMultiple Airlines
Tue 6/37:00 amYOW - STL
2 stops17h 37mMultiple Airlines
Deal found 4/29$429
This Ticket 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/292:16 pmORD - YOW
Nonstop2h 13mAir Canada
Sun 6/16:40 amYOW - ORD
Nonstop2h 22mAir Canada
Deal found 4/29$516
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 6/217:00 amORD - YOW
1 stop6h 27mUnited Airlines
Sat 6/215:25 pmYOW - ORD
Nonstop2h 28mUnited Airlines
Deal found 4/29$588
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/285:30 pmORD - YOW
2 stops21h 50mWestJet
Tue 8/512:20 pmYOW - ORD
2 stops25h 19mWestJet
Deal found 4/29$730
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/312:44 pmMDW - YOW
2 stops10h 38mDelta
Thu 7/105:55 amYOW - MDW
2 stops7h 34mDelta
Deal found 4/29$745
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/139:00 amORD - YOW
2 stops14h 22mDelta
Mon 7/215:55 amYOW - ORD
2 stops13h 12mDelta
Deal found 4/29$792
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/31:30 pmSTL - YOW
1 stop5h 45mAir Canada
Mon 7/72:25 pmYOW - STL
1 stop6h 35mAir Canada
Deal found 4/28$810
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.
Thu 6/128:10 amSTL - YOW
1 stop4h 54mUnited Airlines
Thu 6/196:30 amYOW - STL
1 stop7h 06mUnited Airlines
Deal found 4/28$821
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2710:45 amSTL - YOW
2 stops12h 37mDelta
Tue 6/312:20 pmYOW - STL
2 stops12h 06mDelta
Deal found 4/29$925

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, 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 5/29

9:40 am-12:22 am

1 stop13h 42m

Ottawa

Sun 6/1

5:55 am-4:54 pm

1 stop11h 59m

$312

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 5/26

9:40 am-4:33 pm

1 stop5h 53m

Ottawa

Mon 6/2

12:35 pm-4:54 pm

1 stop5h 19m

$339

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 6/13

4:43 pm-12:22 am

1 stop6h 39m

Ottawa

Fri 6/20

5:55 am-3:50 pm

1 stop10h 55m

$346

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 5/27

5:45 pm-5:06 pm

1 stop22h 21m

Ottawa

Tue 6/3

7:00 am-11:37 pm

2 stops17h 37m

$429

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 5/29

2:16 pm-5:29 pm

Nonstop2h 13m

Ottawa

Sun 6/1

6:40 am-8:02 am

Nonstop2h 22m

$516

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 6/21

7:00 am-2:27 pm

1 stop6h 27m

Ottawa

Sat 6/21

5:25 pm-6:53 pm

Nonstop2h 28m

$588

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 7/28

5:30 pm-4:20 pm

2 stops21h 50m

Ottawa

Tue 8/5

12:20 pm-12:39 pm

2 stops25h 19m

$730

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 7/3

12:44 pm-12:22 am

2 stops10h 38m

Ottawa

Thu 7/10

5:55 am-12:29 pm

2 stops7h 34m

$745

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 7/13

9:00 am-12:22 am

2 stops14h 22m

Ottawa

Mon 7/21

5:55 am-6:07 pm

2 stops13h 12m

$792

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 7/3

1:30 pm-8:15 pm

1 stop5h 45m

Ottawa

Mon 7/7

2:25 pm-8:00 pm

1 stop6h 35m

$810

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 22 results
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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, 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 June is currently the most expensive (average of $460). 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, 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 April 30, 2025.

The most flights from USIL to YOW are scheduled on a Monday (13 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

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 April 30, 2025.
To help decide which airline to fly from Illinois to Ottawa, see what other customers have to say about Porter Airlines, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
285 reviews

Comfort

8.1

Food

7.6

Crew

8.8

Overall

8.0

Entertainment

7.0

Boarding

8.2

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Porter Airlines
8.0
Very good
285 reviews
Porter Airlines
8.0
Very good
285 reviews

Comfort

8.1

Food

7.6

Crew

8.8

Overall

8.0

Entertainment

7.0

Boarding

8.2

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Delta
8.0
Very good
7,929 reviews
Porter Airlines
8.0
Very good
285 reviews

Comfort

8.1

Food

7.6

Crew

8.8

Overall

8.0

Entertainment

7.0

Boarding

8.2

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
United Airlines
7.4
Good
8,696 reviews
Porter Airlines
8.0
Very good
285 reviews

Comfort

8.1

Food

7.6

Crew

8.8

Overall

8.0

Entertainment

7.0

Boarding

8.2

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
WestJet
7.2
Good
2,826 reviews
Porter Airlines
8.0
Very good
285 reviews

Comfort

8.1

Food

7.6

Crew

8.8

Overall

8.0

Entertainment

7.0

Boarding

8.2

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Air Canada
7.0
Good
9,244 reviews
Porter Airlines
8.0
Very good
285 reviews

Comfort

8.1

Food

7.6

Crew

8.8

Overall

8.0

Entertainment

7.0

Boarding

8.2

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

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 Porter Airlines, with whom users have recently found tickets for as low as $145. However, be on the lookout for offers from Air Canada 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 Avianca (87%), Republic Airways (86%) or ANA (84%) 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 $495, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $387 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 June is currently the most expensive (average of $460). 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
Gatineau
Brockville
Pembroke
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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$236Average$452FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$236Average$674FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$250Average$460FlexibilityNo cancel feeOn-time52%

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