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Cheap flights from Ottawa to Illinois from C$ 221

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
23 Dec — 30 Dec1
1 adult

Cheap flight deals from Ottawa to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 December 2024.

Round-trip from

C$ 440

One-way from

C$ 221
14/1-21/1
  • 14/1-21/1
  • 2 total stops
  • 20h 15m total
  • Ottawa to Illinois
Search Deals
Porter Airlines
  • Porter Airlines
  • 31/1
  • 1 total stop
  • 6h 10m total
  • Ottawa to Illinois
Search Deals

Find flight deals from Ottawa to Illinois

Cheapest flights from Ottawa to Illinois
Explore the most affordable flight options available from Ottawa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2024.

Tue 31/127:00 a.m.YOW - MDW
1 stop4h 20mPorter Airlines
Fri 3/15:35 p.m.MDW - YOW
1 stop3h 51mPorter Airlines
Deal found 17/12C$ 443
Mon 30/125:45 p.m.YOW - ORD
2 stops17h 22mMultiple Airlines
Tue 31/129:54 p.m.ORD - YOW
1 stop17h 51mMultiple Airlines
Deal found 16/12C$ 776
Tue 31/125:00 p.m.YOW - ORD
Nonstop2h 38mAir Canada
Fri 3/16:06 p.m.ORD - YOW
Nonstop2h 18mAir Canada
Deal found 17/12C$ 857
Mon 30/126:00 a.m.YOW - ORD
1 stop7h 13mUnited Airlines
Tue 31/126:06 p.m.ORD - YOW
Nonstop2h 18mUnited Airlines
Deal found 16/12C$ 864
Thu 19/127:00 a.m.YOW - MDW
1 stop4h 30mMultiple Airlines
Tue 31/124:08 p.m.MDW - YOW
1 stop21h 12mMultiple Airlines
Deal found 18/12C$ 1,078
Fri 27/125:55 a.m.YOW - ORD
2 stops11h 45mWestJet
Mon 6/16:15 a.m.ORD - YOW
2 stops16h 55mWestJet
Deal found 18/12C$ 1,265
Thu 19/125:55 a.m.YOW - MDW
2 stops17h 11mWestJet
Tue 31/1211:48 a.m.MDW - YOW
2 stops16h 45mWestJet
Deal found 18/12C$ 1,470
Mon 30/125:55 a.m.YOW - MDW
2 stops11h 29mDelta
Sat 4/110:08 a.m.MDW - YOW
2 stops13h 02mDelta
Deal found 18/12C$ 3,185

Find flights from Ottawa to Illinois within your budget

Customize your flight search to find flights from Ottawa to Illinois 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 18 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 14/1

9:20 a.m.-8:13 p.m.

1 stop11h 53m

Chicago O'Hare Intl

Tue 21/1

5:35 a.m.-2:57 p.m.

1 stop8h 22m

C$ 440

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Tue 31/12

7:00 a.m.-10:20 a.m.

1 stop4h 20m

Chicago Midway

Fri 3/1

5:35 p.m.-10:26 p.m.

1 stop3h 51m

C$ 443

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 10/1

9:30 a.m.-12:10 p.m.

1 stop3h 40m

Chicago Midway

Mon 13/1

6:15 a.m.-8:50 p.m.

2 stops13h 35m

C$ 464

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 30/1

6:20 a.m.-8:00 a.m.

Nonstop2h 40m

Chicago O'Hare Intl

Tue 4/2

6:08 p.m.-9:24 p.m.

Nonstop2h 16m

C$ 586

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 1/2

11:00 a.m.-2:45 p.m.

1 stop4h 45m

Chicago O'Hare Intl

Sat 8/2

11:35 a.m.-4:58 p.m.

1 stop4h 23m

C$ 607

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 10/1

5:55 a.m.-4:13 p.m.

2 stops11h 18m

Chicago O'Hare Intl

Mon 13/1

1:40 p.m.-12:10 a.m.

2 stops9h 30m

C$ 793

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 17/1

3:11 p.m.-10:52 a.m.

2 stops20h 41m

Chicago O'Hare Intl

Sun 19/1

6:00 a.m.-3:55 p.m.

1 stop8h 55m

C$ 810

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 14/1

3:11 p.m.-11:30 p.m.

1 stop9h 19m

Lambert-St Louis

Tue 21/1

1:02 p.m.-9:24 p.m.

1 stop7h 22m

C$ 896

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 14/1

6:00 a.m.-3:38 p.m.

2 stops10h 38m

Lambert-St Louis

Tue 21/1

6:30 a.m.-4:16 p.m.

2 stops8h 46m

C$ 917

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Tue 14/1

8:10 p.m.-10:12 a.m.

2 stops15h 02m

Chicago Midway

Tue 21/1

12:44 p.m.-8:50 p.m.

2 stops31h 06m

C$ 1,157

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/12

Showing 1-10 of 21 results
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Best time to book a flight from Ottawa to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Ottawa 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.

Travel insights for flights from Ottawa to Illinois

Get recent, data-driven insights about flights from Ottawa to Illinois including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Illinois (average of C$ 261). Flying from Ottawa to Illinois in May is currently the most expensive (average of C$ 342). 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 YOW to IL?

Find hourly flight availability from Ottawa to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2024.

When flying from Ottawa to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated 18 December 2024.
Get a feel of what it's like to fly with Air Canada, United Airlines and WestJet from Ottawa to Illinois by reading reviews from past customers. 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.
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines
7.9
Good
283 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
9,059 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.3
Good
2,818 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,382 reviews
Delta
8.0
Very good
8,604 reviews
Check prices

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Illinois. 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 from for flights from Ottawa to Illinois?

    Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to Illinois. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.

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

    The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as C$ 221. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Ottawa to Illinois for a low price.

  • What are the most popular routes from Ottawa to Illinois?

    Most travellers choose Ottawa - Chicago O'Hare Intl, Ottawa - Chicago Midway or Ottawa - Champaign University-Willard when deciding on the best route from Ottawa to Illinois.

  • What are the most reliable airlines from Ottawa to Illinois?

    Before booking your flight to Illinois from Ottawa, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (91%), Avianca (86%), ANA( 84%).

  • What are the cheapest flights from Ottawa to Illinois?

    Looking for the cheapest flight from Ottawa to Illinois? While on average our users pay C$ 1,379, our data indicates the cheapest price to be C$ 315. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around C$ 444.

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

    Yes. In addition to deals on Ottawa to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Illinois.

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

    Yes. Cheapflights offers flight deals from Ottawa to Illinois 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 Ottawa to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to Illinois (average of C$ 261). Flying from Ottawa to Illinois in May is currently the most expensive (average of C$ 342). 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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Alternative routes for Ottawa to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Ottawa to Illinois

Discover the top 3 airlines that operate flights from Ottawa to Illinois. 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 629,999 searches. Data last updated 18 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 388AverageC$ 571FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 583AverageC$ 753FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 630AverageC$ 849FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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 Ottawa to Illinois?

Cheapflights makes it easy to find Ottawa to Illinois flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Illinois from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Ottawa to Illinois with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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