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$184+ Cheap flights from Ottawa (YOW) to Illinois

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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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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 November 21, 2024.

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 November 21, 2024.

This Kiwi.com deal was found by Cheapflights users on 11/21. 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.
Fri 12/65:55 amYOW - ORD
2 stops18h 16mMultiple Airlines
Mon 12/98:20 amORD - YOW
1 stop29h 33mMultiple Airlines
Deal found 11/21$362
This FlightHub deal was found by Cheapflights users on 11/21. 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 12/2811:50 amYOW - MDW
1 stop5h 50mPorter Airlines
Sun 1/55:35 pmMDW - YOW
1 stop3h 36mPorter Airlines
Deal found 11/21$365
This Kiwi.com deal was found by Cheapflights users on 11/21. 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 12/2811:50 amYOW - MDW
1 stop5h 50mMultiple Airlines
Mon 1/66:00 amMDW - YOW
1 stop7h 20mMultiple Airlines
Deal found 11/21$387
This Air Canada deal was found by Cheapflights users on 11/21. 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 12/265:30 amYOW - ORD
1 stop4h 27mAir Canada
Mon 1/68:30 pmORD - YOW
1 stop4h 07mAir Canada
Deal found 11/21$425
This United Airlines deal was found by Cheapflights users on 11/21. 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.
Fri 12/276:00 amYOW - ORD
1 stop5h 10mUnited Airlines
Tue 1/79:00 amORD - YOW
1 stop4h 35mUnited Airlines
Deal found 11/21$480
This Justfly.com deal was found by Cheapflights users on 11/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/155:55 amYOW - ORD
2 stops11h 35mWestJet
Mon 12/1611:59 amORD - YOW
2 stops11h 11mWestJet
Deal found 11/21$581
This Delta deal was found by Cheapflights users on 11/21. 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 12/125:55 amYOW - MDW
2 stops12h 06mDelta
Mon 12/1610:38 amMDW - YOW
2 stops12h 32mDelta
Deal found 11/21$850
This Justfly.com deal was found by Cheapflights users on 11/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/65:55 amYOW - MDW
2 stops28h 55mWestJet
Mon 12/912:44 pmMDW - YOW
2 stops31h 06mWestJet
Deal found 11/21$882
This Delta deal was found by Cheapflights users on 11/21. 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.
Fri 12/275:55 amYOW - ORD
2 stops11h 45mDelta
Mon 1/67:05 amORD - YOW
2 stops16h 05mDelta
Deal found 11/21$1,210

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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Mon 1/13

8:35 am-12:10 pm

1 stop4h 35m

Chicago Midway

Fri 1/17

1:05 pm-8:29 pm

1 stop6h 24m

$362

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 12/6

5:55 am-11:11 pm

2 stops18h 16m

Chicago O'Hare Intl

Mon 12/9

8:20 am-2:53 pm

1 stop29h 33m

$362

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Sat 12/28

11:50 am-4:40 pm

1 stop5h 50m

Chicago Midway

Mon 1/6

6:00 am-2:20 pm

1 stop7h 20m

$387

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 1/13

5:00 pm-6:38 pm

Nonstop2h 38m

Chicago O'Hare Intl

Fri 1/17

1:55 pm-5:06 pm

Nonstop2h 11m

$401

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 1/28

2:10 pm-10:57 pm

2 stops9h 47m

Chicago O'Hare Intl

Fri 1/31

9:10 am-4:16 pm

1 stop6h 06m

$426

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 1/15

5:55 am-4:13 pm

2 stops11h 18m

Chicago O'Hare Intl

Wed 1/22

11:05 am-12:10 am

2 stops12h 05m

$536

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/5

4:10 pm-11:58 pm

1 stop8h 48m

Lambert-St Louis

Sun 1/12

8:12 am-8:17 pm

1 stop11h 05m

$554

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/5

5:30 am-2:24 pm

2 stops9h 54m

Lambert-St Louis

Sun 1/12

9:44 am-9:24 pm

1 stop10h 40m

$620

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 4/4

6:52 am-3:21 pm

1 stop9h 29m

Lambert-St Louis

Sun 4/6

3:50 pm-11:47 pm

1 stop6h 57m

$621

OttawaDecatur

YOW - DEC

YOWDEC

Ottawa

Sun 1/5

5:30 am-8:55 am

2 stops28h 25m

Decatur Arpt

Sun 1/12

6:39 pm-10:01 pm

2 stops26h 22m

$678

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 25 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, September is the cheapest month in which you can book a flight from Ottawa to Illinois (average of $232). Flying from Ottawa to Illinois in June is currently the most expensive (average of $308). 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 November 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ottawa to Illinois as you normally would.

Weekly flight availability from Ottawa to Illinois

Explore weekly flight availability from Ottawa to Illinois. 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 November 21, 2024.

The most flights from YOW to USIL are scheduled on a Tuesday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 November 21, 2024.
Read through reviews of airlines operating flights from Ottawa to Illinois, such as Air Canada, United Airlines and WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

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
8,755 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

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
7.8
Good
288 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

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
9,172 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

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
2,811 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

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
8,246 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

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?

    Located just 6.6 mi from the city center, Ottawa (YOW) is the airport most travelers will use when flying to Illinois from Ottawa.

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

    To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at $202. Air Canada flights start at $223 while deals on United Airlines start at $243 one-way.

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

    When deciding which route to take from Ottawa to Illinois consider Ottawa - Chicago O'Hare Intl, Ottawa - Chicago Midway or Ottawa - Lambert-St Louis as they are the most popular.

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

    The top 3 most reliable airlines when flying from Ottawa to Illinois are GoJet (100%), Avianca (100%) and ANA (94%).

  • What are the cheapest flights from Ottawa to Illinois?

    While on average a flight from Ottawa to Illinois is generally $739, our data shows the cheapest flight currently is $186. When looking at the most popular route, (Ottawa - Chicago O'Hare Intl), you can expect to pay $361 for that flight.

  • 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, September is the cheapest month in which you can book a flight from Ottawa to Illinois (average of $232). Flying from Ottawa to Illinois in June is currently the most expensive (average of $308). 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.

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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 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$266Average$372FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$423Average$554FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$426Average$606FlexibilityNo cancel feeOn-time69%
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