What are the cheapest airlines flying from Ottawa to Chicago round-trip?

Currently priced at C$ 486, Porter Airlines will fly you from Ottawa to Chicago and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from C$ 531 and C$ 607, respectively. You may be able to fly from Ottawa to Chicago for 18% less than the average price by searching for these airlines.

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

The cheapest airlines for a one-way flight from Ottawa to Chicago are Porter Airlines (C$ 242), Air Canada (C$ 300), and WestJet (C$ 330).

What is the cheapest day to fly from Ottawa to Chicago?

Travelers seeking maximum savings on their Ottawa to Chicago flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the cheapest flights from Ottawa to Chicago?

Looking at all options, your cheapest flight can be booked for C$ 204. While the most popular route (Ottawa - Chicago O'Hare Intl) can be booked for C$ 409 on average our data indicates C$ 1,132 when flying from Ottawa to Chicago.

What are the most reliable airlines from Ottawa to Chicago?

The top 3 most reliable airlines when flying from Ottawa to Chicago are GoJet (100%), ANA (74%) and Avianca (72%).

What is the cheapest day to fly round-trip from Ottawa to Chicago?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 16% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Ottawa to Chicago?

To save on the cost of your flight from Ottawa to Chicago, book at least 50 days before your planned departure. Booking around this time can save you about 107% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 611 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 820.

What is the cheapest month to fly from Ottawa to Chicago?

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, April can be a great choice for travel to Chicago. Flights to Chicago from Ottawa in April are about C$ 598 on average during April, but can be found for as low as C$ 352.

What airport do you fly from for flights from Ottawa to Chicago?

Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly out of when you book flights from Ottawa to Chicago. 3 airlines have flights from Ottawa to Chicago on a regular basis. Booking flights from Ottawa to Chicago should not be difficult; the airport handles an average of 11 outbound flights to Chicago per day.

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

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

How can I find direct flights from Ottawa to Chicago?

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

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

Yes. Cheapflights offers flight deals from Ottawa to Chicago 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$ 212+ Flights from Ottawa to Chicago

The best prices from Ottawa to Chicago are usually found in April or May, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Ottawa to Chicago

Round-trip from	C$ 473
One-way from	C$ 230
Popular in	November
Cheapest in	April
Average price	C$ 639
Good round-trip deal	C$ 580 or less
Good one-way deal	C$ 282 or less

19/3-26/3
4 total stops
45h 04m total
Ottawa to Chicago

Search Deals

19/3
2 total stops
27h 25m total
Ottawa to Chicago

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (C$ 54 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a round-trip flight from Ottawa to Chicago (CHI).

Search Deals

Price to beat on a one-way flight from Ottawa to Chicago (CHI).

Search Deals

Find flight deals from Ottawa to Chicago

Cheapest flights from Ottawa to Chicago
Explore the most affordable flight options available from Ottawa to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 February 2025.

Wed 19/35:55 a.m.YOW - ORD

2 stops12h 05mMultiple Airlines

Wed 26/34:40 p.m.ORD - YOW

2 stops21h 30mMultiple Airlines

Deal found 19/2C$ 474

Fri 9/512:25 p.m.YOW - MDW

1 stop4h 59mPorter Airlines

Sun 18/59:15 a.m.MDW - YOW

1 stop6h 19mPorter Airlines

Deal found 19/2C$ 486

Sun 4/56:00 a.m.YOW - ORD

1 stop4h 52mAir Canada

Thu 8/58:40 a.m.ORD - YOW

1 stop4h 05mAir Canada

Deal found 19/2C$ 531

Wed 19/38:40 a.m.YOW - MDW

2 stops9h 43mMultiple Airlines

Wed 26/311:15 a.m.MDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 19/2C$ 538

Wed 30/43:45 p.m.YOW - ORD

1 stop25h 59mWestJet

Mon 5/55:30 p.m.ORD - YOW

1 stop30h 11mWestJet

Deal found 18/2C$ 565

Sat 10/55:25 p.m.YOW - ORD

Nonstop2h 29mUnited Airlines

Fri 16/51:55 p.m.ORD - YOW

Nonstop2h 11mUnited Airlines

Deal found 19/2C$ 607

Wed 19/35:55 a.m.YOW - ORD

2 stops26h 45mDelta

Wed 26/37:15 a.m.ORD - YOW

2 stops15h 54mDelta

Deal found 18/2C$ 999

Thu 17/44:20 p.m.YOW - MDW

2 stops21h 15mDelta

Sun 20/46:04 a.m.MDW - YOW

2 stops17h 05mDelta

Deal found 19/2C$ 1,176

Thu 31/77:15 p.m.YOW - MDW

2 stops15h 03mWestJet

Tue 5/81:05 p.m.MDW - YOW

2 stops15h 25mWestJet

Deal found 19/2C$ 1,209

Best flights from Ottawa to Chicago
Discover carefully curated flight deals from Ottawa to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 19 February 2025.

Wed 19/35:55 a.m.YOW - ORD

2 stops19h 03mMultiple Airlines

Wed 26/39:08 p.m.ORD - YOW

2 stops26h 01mMultiple Airlines

Deal found 19/2C$ 473

Fri 9/512:25 p.m.YOW - MDW

1 stop4h 59mPorter Airlines

Sun 18/59:15 a.m.MDW - YOW

1 stop6h 19mPorter Airlines

Deal found 19/2C$ 486

Sun 4/56:00 a.m.YOW - ORD

1 stop4h 52mAir Canada

Sat 10/58:40 a.m.ORD - YOW

1 stop4h 05mAir Canada

Deal found 19/2C$ 531

Sat 10/55:25 p.m.YOW - ORD

Nonstop2h 29mUnited Airlines

Fri 16/51:55 p.m.ORD - YOW

Nonstop2h 11mUnited Airlines

Deal found 19/2C$ 607

Thu 1/56:00 a.m.YOW - ORD

1 stop11h 44mWestJet

Mon 5/55:30 p.m.ORD - YOW

2 stops21h 50mWestJet

Deal found 18/2C$ 732

Wed 19/35:55 a.m.YOW - ORD

2 stops26h 45mDelta

Wed 26/37:15 a.m.ORD - YOW

2 stops15h 54mDelta

Deal found 18/2C$ 999

Wed 19/38:40 a.m.YOW - MDW

2 stops9h 43mMultiple Airlines

Wed 26/311:15 a.m.MDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 19/2C$ 538

Thu 17/44:20 p.m.YOW - MDW

2 stops21h 15mDelta

Sun 20/46:04 a.m.MDW - YOW

2 stops17h 05mDelta

Deal found 19/2C$ 1,176

Thu 31/77:15 p.m.YOW - MDW

2 stops15h 03mWestJet

Tue 5/81:05 p.m.MDW - YOW

2 stops15h 25mWestJet

Deal found 19/2C$ 1,209

Direct flights from Ottawa to Chicago
Explore direct flight options from Ottawa to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 February 2025.

Sun 4/56:33 a.m.YOW - ORD

Nonstop2h 29mAir Canada

Thu 8/510:53 a.m.ORD - YOW

Nonstop2h 11mAir Canada

Deal found 19/2C$ 531

Sat 10/510:37 a.m.YOW - ORD

Nonstop2h 26mUnited Airlines

Wed 21/56:19 p.m.ORD - YOW

Nonstop2h 16mUnited Airlines

Deal found 19/2C$ 607

Last-minute flights from Ottawa to Chicago
Discover last-minute flight deals from Ottawa to Chicago. Data last updated 19 February 2025 and is based on user searches.

Tue 25/25:00 p.m.YOW - ORD

Nonstop2h 34mUnited Airlines

Sat 8/36:00 a.m.ORD - YOW

1 stop6h 20mUnited Airlines

Deal found 18/2C$ 1,014

Wed 26/29:35 p.m.YOW - ORD

2 stops19h 21mMultiple Airlines

Sat 1/38:44 p.m.ORD - YOW

1 stop22h 28mMultiple Airlines

Deal found 19/2C$ 561

Wed 26/29:30 a.m.YOW - MDW

1 stop3h 40mMultiple Airlines

Sat 1/38:44 p.m.MDW - YOW

1 stop19h 01mMultiple Airlines

Deal found 19/2C$ 722

Wed 26/211:25 a.m.YOW - ORD

Nonstop2h 34mAir Canada

Sat 1/311:35 a.m.ORD - YOW

1 stop6h 23mAir Canada

Deal found 19/2C$ 885

Wed 26/25:55 a.m.YOW - ORD

2 stops11h 18mWestJet

Sat 1/34:58 p.m.ORD - YOW

2 stops30h 11mWestJet

Deal found 19/2C$ 1,235

Wed 26/25:55 a.m.YOW - MDW

2 stops29h 17mWestJet

Sat 1/36:59 p.m.MDW - YOW

2 stops28h 10mWestJet

Deal found 19/2C$ 1,284

Fri 7/311:50 a.m.YOW - MDW

1 stop5h 50mPorter Airlines

Sun 9/311:15 a.m.MDW - YOW

1 stop6h 19mPorter Airlines

Deal found 19/2C$ 511

Wed 19/35:55 a.m.YOW - ORD

2 stops12h 05mMultiple Airlines

Wed 26/34:40 p.m.ORD - YOW

2 stops21h 30mMultiple Airlines

Deal found 19/2C$ 474

Wed 19/38:40 a.m.YOW - MDW

2 stops9h 43mMultiple Airlines

Wed 26/311:15 a.m.MDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 19/2C$ 538

Wed 19/35:55 a.m.YOW - ORD

2 stops26h 45mDelta

Wed 26/37:15 a.m.ORD - YOW

2 stops15h 54mDelta

Deal found 18/2C$ 999

Wed 19/38:10 p.m.YOW - MDW

2 stops23h 08mWestJet

Wed 26/312:51 p.m.MDW - YOW

2 stops29h 28mWestJet

Deal found 18/2C$ 1,274

Wed 19/35:55 a.m.YOW - MDW

2 stops11h 19mDelta

Wed 26/39:54 a.m.MDW - YOW

2 stops13h 15mDelta

Deal found 19/2C$ 1,456

One-way flights from Ottawa to Chicago
Search for one-way flight options from Ottawa to Chicago. Find affordable one-way fares based on user searches. Data last updated 19 February 2025.

Wed 19/35:55 a.m.YOW - ORD

2 stops27h 25mMultiple Airlines

Deal found 19/2C$ 230

Wed 9/411:50 a.m.YOW - MDW

1 stop5h 50mPorter Airlines

Deal found 19/2C$ 242

Wed 19/38:40 a.m.YOW - MDW

2 stops9h 43mMultiple Airlines

Deal found 19/2C$ 269

Wed 9/45:25 p.m.YOW - ORD

Nonstop2h 29mAir Canada

Deal found 19/2C$ 300

Wed 4/66:15 a.m.YOW - ORD

2 stops11h 29mWestJet

Deal found 19/2C$ 330

Thu 17/46:33 a.m.YOW - ORD

Nonstop2h 29mUnited Airlines

Deal found 19/2C$ 347

Tue 3/65:55 a.m.YOW - MDW

2 stops13h 05mWestJet

Deal found 19/2C$ 489

Wed 7/55:55 a.m.YOW - MDW

2 stops13h 35mDelta

Deal found 19/2C$ 622

Find flights from Ottawa to Chicago within your budget

Fly from

Fly to

Route

Depart

Return

Price

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 19/3

5:55 a.m.-5:00 p.m.

2 stops12h 05m

Chicago O'Hare Intl

Wed 26/3

4:40 p.m.-3:10 p.m.

2 stops21h 30m

C$ 474

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 9/5

12:25 p.m.-4:24 p.m.

1 stop4h 59m

Chicago Midway

Sun 18/5

9:15 a.m.-4:34 p.m.

1 stop6h 19m

C$ 486

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sun 4/5

6:00 a.m.-9:52 a.m.

1 stop4h 52m

Chicago O'Hare Intl

Thu 8/5

8:40 a.m.-1:45 p.m.

1 stop4h 05m

C$ 531

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Wed 19/3

8:40 a.m.-5:23 p.m.

2 stops9h 43m

Chicago Midway

Wed 26/3

11:15 a.m.-5:09 p.m.

1 stop4h 54m

C$ 538

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 30/4

3:45 p.m.-4:44 p.m.

1 stop25h 59m

Chicago O'Hare Intl

Mon 5/5

5:30 p.m.-12:41 a.m.

1 stop30h 11m

C$ 565

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 10/5

5:25 p.m.-6:54 p.m.

Nonstop2h 29m

Chicago O'Hare Intl

Fri 16/5

1:55 p.m.-5:06 p.m.

Nonstop2h 11m

C$ 607

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 19/3

5:55 a.m.-7:40 a.m.

2 stops26h 45m

Chicago O'Hare Intl

Wed 26/3

7:15 a.m.-12:09 a.m.

2 stops15h 54m

C$ 999

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 17/4

4:20 p.m.-12:35 p.m.

2 stops21h 15m

Chicago Midway

Sun 20/4

6:04 a.m.-12:09 a.m.

2 stops17h 05m

C$ 1,176

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 31/7

7:15 p.m.-9:18 a.m.

2 stops15h 03m

Chicago Midway

Tue 5/8

1:05 p.m.-5:30 a.m.

2 stops15h 25m

C$ 1,209

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 18/3

5:55 a.m.-1:43 p.m.

2 stops32h 48m

C$ 212

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/2

Showing 1-10 of 17 results

Best time to book a flight from Ottawa to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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 Chicago

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

How far ahead should I book a flight from Ottawa to Chicago?

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Chicago (average of C$ 261). Flying from Ottawa to Chicago in March is currently the most expensive (average of C$ 355). 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 CHI?

Unlike in the morning, when flights are generally more expensive, you can save up to 47% on flights from Ottawa to Chicago by exploring options for tickets at noon.

Weekly flight availability from Ottawa to Chicago

The most flights from YOW to CHI are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Chicago by month

In terms of precipitation, rainfall in Chicago 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 Chicago when rainfall is around 43.0 mm.

Temperature in Chicago by month

If weather is an important factor for your trip to Chicago, 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 Chicago

Read reviews from past customers who have flown Delta, Porter Airlines and United Airlines from Ottawa to Chicago. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta

8.0

Very good

8,236 reviews

Delta

8.0

Very good

8,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Porter Airlines

7.9

Good

276 reviews

Delta

8.0

Very good

8,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

United Airlines

7.4

Good

8,771 reviews

Delta

8.0

Very good

8,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

WestJet

7.2

Good

2,801 reviews

Delta

8.0

Very good

8,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Air Canada

7.0

Good

8,746 reviews

Delta

8.0

Very good

8,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Related info for your journey

What airport do you fly from for flights from Ottawa to Chicago?
Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly out of when you book flights from Ottawa to Chicago. 3 airlines have flights from Ottawa to Chicago on a regular basis. Booking flights from Ottawa to Chicago should not be difficult; the airport handles an average of 11 outbound flights to Chicago per day.
What are the cheapest airlines flying from Ottawa to Chicago round-trip?
Currently priced at C$ 486, Porter Airlines will fly you from Ottawa to Chicago and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from C$ 531 and C$ 607, respectively. You may be able to fly from Ottawa to Chicago for 18% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Ottawa to Chicago one-way?
The cheapest airlines for a one-way flight from Ottawa to Chicago are Porter Airlines (C$ 242), Air Canada (C$ 300), and WestJet (C$ 330).
What are the most reliable airlines from Ottawa to Chicago?
The top 3 most reliable airlines when flying from Ottawa to Chicago are GoJet (100%), ANA (74%) and Avianca (72%).
What are the cheapest flights from Ottawa to Chicago?
Looking at all options, your cheapest flight can be booked for C$ 204. While the most popular route (Ottawa - Chicago O'Hare Intl) can be booked for C$ 409 on average our data indicates C$ 1,132 when flying from Ottawa to Chicago.
Can I find deals for flights from Ottawa to Chicago that include hotel bookings?
Yes. In addition to deals on Ottawa to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Chicago.
Can I find deals for business class flights from Ottawa to Chicago?
Yes. Cheapflights offers flight deals from Ottawa to Chicago 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 Chicago?
Currently, January is the cheapest month in which you can book a flight from Ottawa to Chicago (average of C$ 261). Flying from Ottawa to Chicago in March is currently the most expensive (average of C$ 355). 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

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Chicago car rentals

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Top 3 airlines flying from Ottawa to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	CheapestC$ 386	AverageC$ 562	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Air Canada	CheapestC$ 547	AverageC$ 753	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 620	AverageC$ 806	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ottawa to Chicago?

When you search for this flight from Ottawa to Chicago, 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 Ottawa to Chicago?

Cheapflights helps you find that perfect flight to Chicago 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 Chicago with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to Chicago flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Ottawa to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Ottawa to Chicago from C$ 212

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Ottawa to Chicago are usually found in April or May, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Ottawa to Chicago

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ottawa to Chicago

Cheapest flights from Ottawa to ChicagoExplore the most affordable flight options available from Ottawa to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 February 2025.

Explore the most affordable flight options available from Ottawa to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 February 2025.

Find flights from Ottawa to Chicago within your budget

Best time to book a flight from Ottawa to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Ottawa with our price prediction graph.

Travel insights for flights from Ottawa to Chicago

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

How far ahead should I book a flight from Ottawa to Chicago?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Chicago. Price data was last updated on 14 February 2025.

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

What is the cheapest time of day to fly from YOW to CHI?

Find hourly flight availability from Ottawa to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 February 2025.

Weekly flight availability from Ottawa to Chicago

Explore weekly flight availability from Ottawa to Chicago. 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 19 February 2025.

Rainfall in Chicago by month

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

Temperature in Chicago by month

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

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown Delta, Porter Airlines and United Airlines from Ottawa to Chicago. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from Ottawa to Chicago round-trip?

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

What are the most reliable airlines from Ottawa to Chicago?

What are the cheapest flights from Ottawa to Chicago?

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

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Cheapest flights from Ottawa to Chicago
Explore the most affordable flight options available from Ottawa to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 February 2025.