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

Our cheapest airline available from Ottawa to Chicago is Porter Airlines. Our recent data shows that you can find tickets from as low as $335 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at $374 and $427 round-trip. Porter Airlines is currently priced 20% below the average price you’ll pay for this route.

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

To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at $177. Air Canada flights start at $211 while deals on United Airlines start at $244 one-way.

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 Friday 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 for the cheapest flight from Ottawa to Chicago? While on average our users pay $950, our data indicates the cheapest price to be $163. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around $322.

What are the most reliable airlines from Ottawa to Chicago?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to Chicago on time: GoJet (100%), ANA (74%), Avianca (72%).

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

It’s generally more expensive to depart on a Friday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 50 days in advance, which can save you up to 107% on flights from Ottawa to Chicago compared to booking the week you need them. Waiting 50 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $430. For sooner than that we have options available in the next 3 days from $577.

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

April is one of the best times of the year to fly to Chicago from Ottawa. Prices for April average $421 per person but you can even find prices for as low as $248. The most expensive prices can be found in the month of November. Opting for a April flight can save you 15% on your journey compared to booking in November

Most accurate provider : When it comes to deals on Ottawa-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Chicago flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ottawa-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Located just 6.6 mi from the city center, Ottawa is the airport most travelers will use when flying to Chicago from Ottawa. Booking flights from Ottawa (YOW) to Chicago should be relatively easy as there are 10 daily outbound flights to Chicago from 3 different airlines.

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.

$161+ Flights from Ottawa to Chicago

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Find cheap flights from Ottawa to Chicago with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Cheap flight deals from Ottawa to Chicago

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$328 (Kiwi.com)
One-way from	$161 (Kiwi.com)
Popular in	November
Cheapest in	April
Average price	$450
Good round-trip deal	$324 or less
Good one-way deal	$227 or less

Provider with most accurate pricing for Ottawa-Chicago (CHI) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ottawa-Chicago (CHI) flights.

Search Deals

From Ottawa to Chicago (CHI)

Search Deals

One-way flight from Ottawa to Chicago (CHI)

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 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).

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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 February 21, 2025.

Tue 4/19:50 amYOW - ORD

1 stop9h 36mMultiple Airlines

Sun 4/68:10 amORD - YOW

1 stop8h 00mMultiple Airlines

Deal found 2/20

$328

Fri 4/188:50 amYOW - MDW

1 stop8h 50mPorter Airlines

Tue 4/225:35 pmMDW - YOW

1 stop3h 54mPorter Airlines

Deal found 2/20

$335

Tue 4/15:45 amYOW - ORD

1 stop6h 02mAir Canada

Mon 4/77:00 amORD - YOW

1 stop4h 17mAir Canada

Deal found 2/19

$374

Thu 3/205:55 amYOW - MDW

1 stop11h 45mMultiple Airlines

Thu 3/2711:15 amMDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 2/20

$389

Tue 4/15:25 pmYOW - ORD

Nonstop2h 29mUnited Airlines

Mon 4/76:19 pmORD - YOW

Nonstop2h 16mUnited Airlines

Deal found 2/19

$427

Thu 3/205:55 amYOW - MDW

2 stops7h 41mDelta

Thu 3/2712:51 pmMDW - YOW

2 stops10h 18mDelta

Deal found 2/20

$460

Sat 4/265:55 amYOW - ORD

2 stops11h 16mDelta

Thu 5/17:05 amORD - YOW

2 stops16h 17mDelta

Deal found 2/20

$610

Thu 10/25:55 amYOW - ORD

2 stops11h 48mWestJet

Sat 10/185:30 pmORD - YOW

2 stops20h 49mWestJet

Deal found 2/19

$612

Thu 10/26:00 amYOW - MDW

2 stops13h 03mWestJet

Sat 10/181:05 pmMDW - YOW

2 stops15h 23mWestJet

Deal found 2/19

$820

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 February 21, 2025.

Tue 4/19:50 amYOW - ORD

1 stop9h 36mMultiple Airlines

Sun 4/68:10 amORD - YOW

1 stop8h 00mMultiple Airlines

Deal found 2/20

$328

Fri 4/188:50 amYOW - MDW

1 stop8h 50mPorter Airlines

Tue 4/225:35 pmMDW - YOW

1 stop3h 54mPorter Airlines

Deal found 2/20

$335

Tue 4/16:33 amYOW - ORD

Nonstop2h 29mAir Canada

Sun 4/67:00 amORD - YOW

1 stop4h 17mAir Canada

Deal found 2/20

$374

Tue 4/15:25 pmYOW - ORD

Nonstop2h 29mUnited Airlines

Mon 4/76:19 pmORD - YOW

Nonstop2h 16mUnited Airlines

Deal found 2/19

$427

Thu 3/205:55 amYOW - MDW

2 stops7h 41mDelta

Thu 3/2712:51 pmMDW - YOW

2 stops10h 18mDelta

Deal found 2/20

$460

Fri 5/165:15 pmYOW - ORD

2 stops24h 29mWestJet

Tue 5/205:30 pmORD - YOW

1 stop12h 15mWestJet

Deal found 2/20

$623

Thu 3/205:55 amYOW - MDW

1 stop11h 45mMultiple Airlines

Thu 3/2711:15 amMDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 2/20

$389

Sat 4/265:55 amYOW - ORD

2 stops11h 16mDelta

Thu 5/17:05 amORD - YOW

2 stops16h 17mDelta

Deal found 2/20

$610

Thu 6/267:15 pmYOW - MDW

2 stops23h 48mWestJet

Mon 6/3012:08 pmMDW - YOW

2 stops11h 33mWestJet

Deal found 2/20

$850

Last-minute flights from Ottawa to Chicago
Discover last-minute flight deals from Ottawa to Chicago. Data last updated February 21, 2025 and is based on user searches.

Tue 2/255:55 amYOW - ORD

2 stops11h 14mWestJet

Mon 3/32:35 pmORD - YOW

2 stops8h 34mWestJet

Deal found 2/20

$729

Fri 2/289:30 amYOW - MDW

1 stop3h 40mPorter Airlines

Mon 3/311:15 amMDW - YOW

1 stop6h 19mPorter Airlines

Deal found 2/21

$396

Fri 2/285:20 pmYOW - ORD

1 stop18h 45mMultiple Airlines

Mon 3/37:13 pmORD - YOW

1 stop20h 59mMultiple Airlines

Deal found 2/21

$420

Fri 2/286:20 amYOW - ORD

Nonstop2h 40mUnited Airlines

Mon 3/36:00 amORD - YOW

1 stop6h 20mUnited Airlines

Deal found 2/21

$750

Fri 2/289:35 pmYOW - MDW

2 stops21h 08mMultiple Airlines

Mon 3/311:15 amMDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 2/21

$893

Fri 2/285:55 amYOW - MDW

2 stops29h 47mWestJet

Mon 3/31:26 pmMDW - YOW

2 stops26h 25mWestJet

Deal found 2/21

$963

Sat 3/15:00 pmYOW - ORD

Nonstop2h 34mAir Canada

Wed 3/53:35 pmORD - YOW

1 stop5h 33mAir Canada

Deal found 2/20

$622

Sat 3/15:55 amYOW - ORD

2 stops32h 49mWestJet

Thu 3/61:40 pmORD - YOW

2 stops9h 29mWestJet

Deal found 2/21

$984

Thu 3/204:15 pmYOW - ORD

1 stop25h 45mMultiple Airlines

Thu 3/278:10 pmORD - YOW

1 stop20h 00mMultiple Airlines

Deal found 2/20

$332

Thu 3/205:55 amYOW - MDW

1 stop11h 45mMultiple Airlines

Thu 3/2711:15 amMDW - YOW

1 stop4h 54mMultiple Airlines

Deal found 2/20

$389

Thu 3/205:55 amYOW - MDW

2 stops7h 41mDelta

Thu 3/2712:51 pmMDW - YOW

2 stops10h 18mDelta

Deal found 2/20

$460

Fri 3/215:00 pmYOW - ORD

Nonstop2h 41mUnited Airlines

Fri 3/286:13 pmORD - YOW

Nonstop2h 11mUnited Airlines

Deal found 2/21

$469

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 February 21, 2025.

Tue 4/19:50 amYOW - ORD

1 stop22h 44mMultiple Airlines

Deal found 2/20

$161

Tue 4/19:40 amYOW - MDW

1 stop8h 00mPorter Airlines

Deal found 2/19

$177

Fri 3/215:55 amYOW - MDW

1 stop11h 45mMultiple Airlines

Deal found 2/20

$199

Tue 4/15:25 pmYOW - ORD

Nonstop2h 29mAir Canada

Deal found 2/20

$211

Fri 4/185:25 pmYOW - ORD

Nonstop2h 29mUnited Airlines

Deal found 2/20

$244

Wed 5/75:55 amYOW - MDW

2 stops13h 35mDelta

Deal found 2/21

$274

Fri 5/165:15 pmYOW - ORD

2 stops24h 29mWestJet

Deal found 2/20

$322

Fri 5/165:15 pmYOW - MDW

2 stops25h 49mWestJet

Deal found 2/21

$468

Find flights from Ottawa to Chicago within your budget

Fly from

Fly to

Route

Depart

Return

Price

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 4/1

9:50 am-6:26 pm

1 stop9h 36m

Chicago O'Hare Intl

Sun 4/6

8:10 am-5:10 pm

1 stop8h 00m

$328

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 4/18

8:50 am-4:40 pm

1 stop8h 50m

Chicago Midway

Tue 4/22

5:35 pm-10:29 pm

1 stop3h 54m

$335

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 4/1

5:25 pm-6:54 pm

Nonstop2h 29m

Chicago O'Hare Intl

Mon 4/7

10:53 am-2:04 pm

Nonstop2h 11m

$374

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 3/20

5:55 am-4:40 pm

1 stop11h 45m

Chicago Midway

Thu 3/27

11:15 am-5:09 pm

1 stop4h 54m

$389

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 4/1

5:25 pm-6:54 pm

Nonstop2h 29m

Chicago O'Hare Intl

Mon 4/7

6:19 pm-9:35 pm

Nonstop2h 16m

$427

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 3/20

5:55 am-12:36 pm

2 stops7h 41m

Chicago Midway

Thu 3/27

12:51 pm-12:09 am

2 stops10h 18m

$460

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 4/26

5:55 am-4:11 pm

2 stops11h 16m

Chicago O'Hare Intl

Thu 5/1

7:05 am-12:22 am

2 stops16h 17m

$610

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 5/16

5:15 pm-4:44 pm

2 stops24h 29m

Chicago O'Hare Intl

Tue 5/20

5:30 pm-6:45 am

1 stop12h 15m

$623

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 6/26

7:15 pm-6:03 pm

2 stops23h 48m

Chicago Midway

Mon 6/30

12:08 pm-12:41 am

2 stops11h 33m

$850

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 4/1

9:50 am-7:34 am

1 stop22h 44m

$161

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 17 results

Compare providers for flights from Ottawa to Chicago

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Chicago in February.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ottawa-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Chicago flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ottawa-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, August is the cheapest month in which you can book a flight from Ottawa to Chicago (average of $245). Flying from Ottawa to Chicago in March is currently the most expensive (average of $321). 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?

It’s typically best to fly out from Ottawa to Chicago in the evening. Doing so could potentially save you 51% on the flight price compared to flying in the morning, which is usually more expensive.

Weekly flight availability from Ottawa to Chicago

The most flights from YOW to CHI are scheduled on a Tuesday (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 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 Chicago when rainfall is around 1.7 in.

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 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 Chicago

Get a feel of what it's like to fly with Delta, Porter Airlines and United Airlines from Ottawa to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,217 reviews

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

8,217 reviews

Delta

8.0

Very good

8,217 reviews

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

8,217 reviews

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

8,760 reviews

Delta

8.0

Very good

8,217 reviews

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

2,800 reviews

Delta

8.0

Very good

8,217 reviews

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

8,756 reviews

Delta

8.0

Very good

8,217 reviews

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?
Located just 6.6 mi from the city center, Ottawa is the airport most travelers will use when flying to Chicago from Ottawa. Booking flights from Ottawa (YOW) to Chicago should be relatively easy as there are 10 daily outbound flights to Chicago from 3 different airlines.
What are the cheapest airlines flying from Ottawa to Chicago round-trip?
Our cheapest airline available from Ottawa to Chicago is Porter Airlines. Our recent data shows that you can find tickets from as low as $335 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at $374 and $427 round-trip. Porter Airlines is currently priced 20% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Ottawa to Chicago one-way?
To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at $177. Air Canada flights start at $211 while deals on United Airlines start at $244 one-way.
What are the most reliable airlines from Ottawa to Chicago?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to Chicago on time: GoJet (100%), ANA (74%), Avianca (72%).
What are the cheapest flights from Ottawa to Chicago?
Looking for the cheapest flight from Ottawa to Chicago? While on average our users pay $950, our data indicates the cheapest price to be $163. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around $322.
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, August is the cheapest month in which you can book a flight from Ottawa to Chicago (average of $245). Flying from Ottawa to Chicago in March is currently the most expensive (average of $321). 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

Merrillville

New Buffalo

Hammond

Benton Harbor

Porter

Lansing

Valparaiso

Chesterton

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Top 3 airlines flying from Ottawa to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	Cheapest$272	Average$433	FlexibilityNo cancel fee	On-time52%
United Airlines	Cheapest$406	Average$551	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$423	Average$554	FlexibilityNo cancel fee	On-time67%

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$161+ Cheap flights from Ottawa (YOW) to Chicago (CHI)

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ottawa to Chicago with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Cheap flight deals from Ottawa to Chicago

Most accurate provider

Most trusted provider

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 February 21, 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 February 21, 2025.

Find flights from Ottawa to Chicago within your budget

Compare providers for flights from Ottawa to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Chicago in February.

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 February 14, 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 February 21, 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 February 21, 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

Get a feel of what it's like to fly with Delta, Porter Airlines and United Airlines from Ottawa to Chicago by reading reviews from past customers. Users have also rated airlines 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 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?

How can I find direct flights from Ottawa to Chicago?

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

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

Traveling to a place near Ottawa?

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Alternative routes for Ottawa to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ottawa to Chicago

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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 February 21, 2025.