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

C$ 226 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and United Airlines, with prices starting from C$ 239 and C$ 243, respectively.

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

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 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 is the cheapest month to fly from Illinois to Ottawa?

The best pricing can be found in the month of May. Prices to Ottawa from Illinois average C$ 687. You can even find prices in May for less than C$ 687, as users have found deals to Ottawa from as low as C$ 323. The month of November appears to be one of the more expensive times to travel to Ottawa from Illinois. Flying in the targeted month can save you up to 18%.

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.

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.

C$ 222+ Flights from Illinois to Ottawa

Cheap flight deals from Illinois to Ottawa

Round-trip from	C$ 440
One-way from	C$ 222
Popular in	November
Cheapest in	May
Average price	C$ 746

4/9-7/9
2 total stops
41h 31m total
Illinois to Ottawa

Search Deals

13/9
2 total stops
28h 38m total
Illinois to Ottawa

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (C$ 84 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

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 31 July 2025.

Thu 4/99:35 a.m.MDW - YOW

1 stop13h 47mMultiple Airlines

Sun 7/95:55 a.m.YOW - MDW

1 stop27h 44mMultiple Airlines

Deal found 29/7C$ 440

Thu 4/95:17 p.m.ORD - YOW

1 stop22h 40mMultiple Airlines

Sun 7/94:25 p.m.YOW - ORD

1 stop24h 47mMultiple Airlines

Deal found 29/7C$ 447

Wed 17/95:30 p.m.ORD - YOW

1 stop12h 15mWestJet

Sat 27/96:00 a.m.YOW - ORD

1 stop11h 43mWestJet

Deal found 29/7C$ 451

Fri 12/98:40 a.m.ORD - YOW

1 stop4h 11mAir Canada

Fri 19/911:05 a.m.YOW - ORD

1 stop4h 50mAir Canada

Deal found 28/7C$ 475

Fri 19/99:35 a.m.MDW - YOW

1 stop5h 59mPorter Airlines

Mon 22/91:25 p.m.YOW - MDW

1 stop3h 59mPorter Airlines

Deal found 31/7C$ 501

Thu 4/96:06 p.m.ORD - YOW

Nonstop2h 29mUnited Airlines

Sun 7/96:33 a.m.YOW - ORD

Nonstop2h 27mUnited Airlines

Deal found 29/7C$ 516

Sat 20/99:35 a.m.MDW - YOW

2 stops13h 47mDelta

Sun 28/95:55 a.m.YOW - MDW

2 stops7h 33mDelta

Deal found 29/7C$ 960

Best flights from Illinois to Ottawa
Discover carefully curated flight deals from Illinois to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 31 July 2025.

Thu 4/99:35 a.m.MDW - YOW

1 stop13h 47mMultiple Airlines

Sun 7/95:55 a.m.YOW - MDW

1 stop27h 44mMultiple Airlines

Deal found 29/7C$ 440

Wed 17/95:30 p.m.ORD - YOW

1 stop12h 15mWestJet

Sat 27/96:00 a.m.YOW - ORD

1 stop11h 43mWestJet

Deal found 29/7C$ 451

Fri 12/98:40 a.m.ORD - YOW

1 stop4h 11mAir Canada

Fri 19/911:05 a.m.YOW - ORD

1 stop4h 50mAir Canada

Deal found 28/7C$ 475

Fri 19/99:35 a.m.MDW - YOW

1 stop5h 59mPorter Airlines

Mon 22/91:25 p.m.YOW - MDW

1 stop3h 59mPorter Airlines

Deal found 31/7C$ 501

Thu 4/96:06 p.m.ORD - YOW

Nonstop2h 29mUnited Airlines

Sun 7/96:33 a.m.YOW - ORD

Nonstop2h 27mUnited Airlines

Deal found 29/7C$ 516

Thu 4/95:17 p.m.ORD - YOW

1 stop22h 40mMultiple Airlines

Sun 7/94:25 p.m.YOW - ORD

1 stop24h 47mMultiple Airlines

Deal found 29/7C$ 447

Sat 20/99:35 a.m.MDW - YOW

2 stops13h 47mDelta

Sun 28/95:55 a.m.YOW - MDW

2 stops7h 33mDelta

Deal found 29/7C$ 960

Direct flights from Illinois to Ottawa
Explore direct flight options from Illinois to Ottawa based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 July 2025.

Thu 4/96:06 p.m.ORD - YOW

Nonstop2h 29mUnited Airlines

Sun 7/96:33 a.m.YOW - ORD

Nonstop2h 27mUnited Airlines

Deal found 29/7C$ 516

Fri 12/96:06 p.m.ORD - YOW

Nonstop2h 29mAir Canada

Fri 19/96:33 a.m.YOW - ORD

Nonstop2h 27mAir Canada

Deal found 28/7C$ 563

Fri 17/101:55 p.m.ORD - YOW

Nonstop2h 11mMultiple Airlines

Mon 20/1010:37 a.m.YOW - ORD

Nonstop2h 24mMultiple Airlines

Deal found 30/7C$ 665

Last-minute flights from Illinois to Ottawa
Discover last-minute flight deals from Illinois to Ottawa. Data last updated 31 July 2025 and is based on user searches.

Tue 5/85:05 a.m.ORD - YOW

1 stop11h 15mMultiple Airlines

Tue 30/97:00 a.m.YOW - ORD

2 stops10h 51mMultiple Airlines

Deal found 29/7C$ 687

Tue 5/89:40 a.m.MDW - YOW

1 stop6h 23mPorter Airlines

Tue 30/911:00 a.m.YOW - MDW

1 stop6h 24mPorter Airlines

Deal found 29/7C$ 875

Tue 5/89:40 a.m.MDW - YOW

1 stop6h 23mMultiple Airlines

Tue 30/95:55 a.m.YOW - MDW

1 stop11h 29mMultiple Airlines

Deal found 29/7C$ 892

Tue 5/86:15 p.m.ORD - YOW

Nonstop2h 20mUnited Airlines

Tue 30/910:37 a.m.YOW - ORD

Nonstop2h 24mUnited Airlines

Deal found 29/7C$ 1,028

Tue 5/89:55 a.m.ORD - YOW

1 stop4h 10mAir Canada

Tue 30/96:33 a.m.YOW - ORD

Nonstop2h 27mAir Canada

Deal found 29/7C$ 1,033

Tue 5/89:25 a.m.MDW - YOW

2 stops13h 57mDelta

Tue 30/95:55 a.m.YOW - MDW

2 stops7h 33mDelta

Deal found 29/7C$ 1,512

Tue 5/85:05 p.m.MDW - YOW

2 stops30h 43mWestJet

Sun 10/85:55 a.m.YOW - MDW

2 stops13h 17mWestJet

Deal found 29/7C$ 1,723

Tue 19/89:40 a.m.MDW - YOW

1 stop6h 23mPorter Airlines

Wed 27/811:00 a.m.YOW - MDW

1 stop6h 24mPorter Airlines

Deal found 31/7C$ 505

Tue 19/85:05 a.m.ORD - YOW

1 stop11h 15mMultiple Airlines

Wed 27/83:50 p.m.YOW - ORD

1 stop9h 09mMultiple Airlines

Deal found 31/7C$ 545

Thu 21/812:43 p.m.MDW - YOW

2 stops10h 39mDelta

Thu 2/105:55 a.m.YOW - MDW

2 stops13h 40mDelta

Deal found 31/7C$ 1,208

Sun 24/86:20 p.m.ORD - YOW

1 stop6h 15mAir Canada

Mon 25/82:25 p.m.YOW - ORD

1 stop6h 51mAir Canada

Deal found 30/7C$ 601

Sun 24/812:43 p.m.MDW - YOW

2 stops10h 39mWestJet

Mon 25/86:00 a.m.YOW - MDW

2 stops16h 44mWestJet

Deal found 30/7C$ 1,608

One-way flights from Illinois to Ottawa
Search for one-way flight options from Illinois to Ottawa. Find affordable one-way fares based on user searches. Data last updated 31 July 2025.

Sat 13/96:44 p.m.ORD - YOW

2 stops28h 38mMultiple Airlines

Deal found 30/7C$ 222

Sat 20/95:30 p.m.ORD - YOW

1 stop12h 15mWestJet

Deal found 29/7C$ 226

Sun 31/810:40 a.m.MDW - YOW

1 stop4h 53mPorter Airlines

Deal found 31/7C$ 239

Sat 20/910:50 a.m.ORD - YOW

Nonstop2h 14mUnited Airlines

Deal found 29/7C$ 243

Sat 23/89:40 a.m.MDW - YOW

1 stop13h 42mMultiple Airlines

Deal found 29/7C$ 244

Mon 1/98:25 p.m.ORD - YOW

1 stop4h 09mAir Canada

Deal found 31/7C$ 323

Sat 20/99:35 a.m.MDW - YOW

2 stops13h 47mDelta

Deal found 29/7C$ 459

Sat 13/911:00 a.m.MDW - YOW

2 stops12h 22mWestJet

Deal found 30/7C$ 748

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 4/9

9:35 a.m.-12:22 a.m.

1 stop13h 47m

Ottawa

Sun 7/9

5:55 a.m.-8:39 a.m.

1 stop27h 44m

C$ 440

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 4/9

5:17 p.m.-4:57 p.m.

1 stop22h 40m

Ottawa

Sun 7/9

4:25 p.m.-4:12 p.m.

1 stop24h 47m

C$ 447

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 17/9

5:30 p.m.-6:45 a.m.

1 stop12h 15m

Ottawa

Sat 27/9

6:00 a.m.-4:43 p.m.

1 stop11h 43m

C$ 451

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 12/9

8:40 a.m.-1:51 p.m.

1 stop4h 11m

Ottawa

Fri 19/9

11:05 a.m.-2:55 p.m.

1 stop4h 50m

C$ 475

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 19/9

9:35 a.m.-4:34 p.m.

1 stop5h 59m

Ottawa

Mon 22/9

1:25 p.m.-4:24 p.m.

1 stop3h 59m

C$ 501

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 4/9

6:06 p.m.-9:35 p.m.

Nonstop2h 29m

Ottawa

Sun 7/9

6:33 a.m.-8:00 a.m.

Nonstop2h 27m

C$ 516

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sat 20/9

9:35 a.m.-12:22 a.m.

2 stops13h 47m

Ottawa

Sun 28/9

5:55 a.m.-12:28 p.m.

2 stops7h 33m

C$ 960

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 13/9

6:44 p.m.-12:22 a.m.

2 stops28h 38m

C$ 222

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 20/9

5:30 p.m.-6:45 a.m.

1 stop12h 15m

C$ 226

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sun 31/8

10:40 a.m.-4:33 p.m.

1 stop4h 53m

C$ 239

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/7

Showing 1-10 of 15 results

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, October is the cheapest month in which you can book a flight from Illinois to Ottawa (average of C$ 224). Flying from Illinois to Ottawa in December is currently the most expensive (average of C$ 326). 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?

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

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

Read through reviews of airlines operating flights from Illinois to Ottawa, such as Porter Airlines,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

318 reviews

Check prices

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

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Delta

8.0

Very good

7,980 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

United Airlines

7.4

Good

8,902 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

WestJet

7.2

Good

2,977 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Air Canada

7.1

Good

9,842 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Related info for your journey

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.
What are the cheapest airlines to fly from Illinois to Ottawa one-way?
C$ 226 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and United Airlines, with prices starting from C$ 239 and C$ 243, respectively.
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 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.
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, October is the cheapest month in which you can book a flight from Illinois to Ottawa (average of C$ 224). Flying from Illinois to Ottawa in December is currently the most expensive (average of C$ 326). 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

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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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Cheap flights from Illinois to Ottawa from C$ 222

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 31 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Illinois to Ottawa

Cheapest flights from Illinois to OttawaExplore 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 31 July 2025.

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 31 July 2025.

Cheapflights Fare Finder

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

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.

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?

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 31 July 2025.

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 31 July 2025.

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 31 July 2025.

Read through reviews of airlines operating flights from Illinois to Ottawa, such as Porter Airlines,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

What are the most popular routes from Illinois to Ottawa?

What are the most reliable airlines from Illinois to Ottawa?

Can I find deals for flights from Illinois to Ottawa that include hotel bookings?

How can I find direct flights from Illinois to Ottawa?

Can I find deals for business class flights from Illinois to Ottawa?

What is the cheapest month to book a flight from Illinois to Ottawa?

Travelling to a place near Ottawa?

Browse thousands of different options on Cheapflights for your next trip

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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.

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?

Why should you use Cheapflights to find cheap flight tickets from Illinois to Ottawa?

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

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

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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 31 July 2025.