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

Flying on Air Canada is currently your cheapest option to Ottawa, with prices starting at $189. Additional round-trip tickets that might be worth considering are offered by United Airlines and Porter Airlines, with the lowest prices starting at $236 and $250, respectively. Air Canada is 61% cheaper than the average price of flights available within the next 90 days to this destination.

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

The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as $175. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Chicago to Ottawa for a low price.

In terms of precipitation, rainfall in Ottawa ranges from 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

What are the cheapest flights from Chicago to Ottawa?

While on average a flight from Chicago to Ottawa is generally $701, our data shows the cheapest flight currently is $139. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $260 for that flight.

What are the most reliable airlines from Chicago to Ottawa?

The top 3 most reliable airlines when flying from Chicago to Ottawa are SkyWest Airlines (100%), GoJet (100%) and United Airlines (81%).

What are the most popular airlines that fly from Chicago to Ottawa?

United Airlines, Air Canada and Porter Airlines are the most popular airlines when flying from Chicago to Ottawa.

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

Most trusted provider : When it comes to deals on Chicago-Ottawa flights, Cheapflights users trust eDreams the most. eDreams 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 Chicago-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly into when you book flights from Chicago to Ottawa. 3 airlines have flights to Ottawa from Chicago on a regular basis. Booking flights from Chicago to Ottawa should not be difficult; the airport handles an average of 5 inbound flights from Chicago per day.

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

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

How can I find direct flights from Chicago to Ottawa?

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

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

Yes. Cheapflights offers flight deals from Chicago 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.

$91+ Flights from Chicago to Ottawa

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Find cheap flights from Chicago to Ottawa 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.

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Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in May or September, booked 57 days in advance, depart on a Saturday or Thursday and return on a Saturday

Cheap flight deals from Chicago to Ottawa

Cheapest flights from Chicago to Ottawa
Explore the most affordable flight options available from Chicago to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Wed 12/247:30 amORD - YOW

1 stop8h 55mMultiple Airlines

Wed 1/74:20 pmYOW - ORD

3 stops29h 43mMultiple Airlines

Deal found 12/17

$479

Mon 12/227:30 amORD - YOW

1 stop15h 55mMultiple Airlines

Wed 1/217:00 amYOW - ORD

1 stop15h 03mMultiple Airlines

Deal found 12/17

$503

Wed 12/246:12 amMDW - YOW

2 stops34h 13mMultiple Airlines

Wed 1/710:00 amYOW - MDW

1 stop25h 10mMultiple Airlines

Deal found 12/17

$537

Sun 12/216:10 amORD - YOW

2 stops34h 00mMultiple Airlines

Wed 1/217:00 amYOW - ORD

1 stop15h 03mMultiple Airlines

Deal found 12/17

$548

Wed 12/246:05 amORD - YOW

1 stop9h 25mMultiple Airlines

Wed 12/313:55 pmYOW - ORD

1 stop17h 36mMultiple Airlines

Deal found 12/17

$590

Wed 12/246:12 amMDW - YOW

2 stops41h 13mMultiple Airlines

Wed 12/316:50 amYOW - MDW

1 stop4h 15mMultiple Airlines

Deal found 12/17

$599

Wed 12/246:00 pmORD - YOW

Nonstop2h 18mAir Canada

Sun 12/287:15 amYOW - ORD

1 stop6h 46mAir Canada

Deal found 12/17

$626

Mon 12/223:10 pmMDW - YOW

1 stop7h 48mMultiple Airlines

Wed 1/215:40 amYOW - MDW

2 stops8h 09mMultiple Airlines

Deal found 12/17

$641

Wed 12/2411:00 amMDW - YOW

1 stop7h 54mPorter Airlines

Wed 12/316:50 amYOW - MDW

1 stop4h 15mPorter Airlines

Deal found 12/17

$718

Mon 12/228:15 amMDW - YOW

2 stops14h 43mMultiple Airlines

Mon 12/299:30 amYOW - MDW

1 stop13h 28mMultiple Airlines

Deal found 12/16

$777

Sun 12/212:16 pmMDW - YOW

1 stop8h 42mMultiple Airlines

Wed 1/215:40 amYOW - MDW

2 stops8h 09mMultiple Airlines

Deal found 12/17

$827

Wed 12/2411:00 amMDW - YOW

1 stop5h 29mPorter Airlines

Sun 12/2812:10 pmYOW - MDW

1 stop4h 10mPorter Airlines

Deal found 12/17

$834

Best flights from Chicago to Ottawa
Discover carefully curated flight deals from Chicago to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Wed 1/147:20 amORD - YOW

1 stop9h 05mMultiple Airlines

Thu 1/157:00 amYOW - ORD

1 stop14h 57mMultiple Airlines

Deal found 12/15

$250

Sun 1/184:15 pmMDW - YOW

1 stop14h 44mPorter Airlines

Tue 1/277:00 amYOW - MDW

1 stop4h 10mPorter Airlines

Deal found 12/16

$423

Sun 1/187:58 pmORD - YOW

1 stop20h 17mMultiple Airlines

Tue 1/277:00 amYOW - ORD

1 stop15h 03mMultiple Airlines

Deal found 12/16

$261

Fri 1/235:15 amORD - YOW

2 stops18h 27mMultiple Airlines

Sun 1/254:20 pmYOW - ORD

3 stops29h 43mMultiple Airlines

Deal found 12/15

$262

Fri 1/97:21 pmORD - YOW

1 stop18h 37mMultiple Airlines

Mon 1/197:15 pmYOW - ORD

2 stops19h 42mMultiple Airlines

Deal found 12/15

$262

Wed 1/147:21 pmORD - YOW

1 stop18h 37mMultiple Airlines

Wed 1/217:00 amYOW - ORD

1 stop15h 03mMultiple Airlines

Deal found 12/15

$267

Fri 1/2311:05 amMDW - YOW

1 stop5h 24mPorter Airlines

Sun 1/258:55 pmYOW - MDW

1 stop14h 15mPorter Airlines

Deal found 12/16

$439

Fri 1/2311:05 amMDW - YOW

1 stop12h 37mMultiple Airlines

Sun 1/255:40 amYOW - MDW

1 stop10h 40mMultiple Airlines

Deal found 12/16

$314

Thu 1/1511:05 amMDW - YOW

1 stop5h 24mMultiple Airlines

Sun 1/184:35 pmYOW - MDW

2 stops8h 27mMultiple Airlines

Deal found 12/16

$362

Fri 1/1611:05 amMDW - YOW

1 stop19h 54mMultiple Airlines

Sun 1/183:55 pmYOW - MDW

1 stop9h 07mMultiple Airlines

Deal found 12/17

$368

Tue 1/1311:05 amMDW - YOW

1 stop12h 37mMultiple Airlines

Tue 1/205:40 amYOW - MDW

2 stops8h 11mMultiple Airlines

Deal found 12/16

$383

Sun 1/184:15 pmMDW - YOW

1 stop14h 44mMultiple Airlines

Tue 1/275:40 amYOW - MDW

2 stops8h 09mMultiple Airlines

Deal found 12/16

$397

Last-minute flights from Chicago to Ottawa
Discover last-minute flight deals from Chicago to Ottawa. Data last updated December 18, 2025 and is based on user searches.

Wed 1/74:55 pmORD - YOW

1 stop21h 03mMultiple Airlines

Thu 1/227:00 amYOW - ORD

1 stop16h 36mMultiple Airlines

Deal found 12/17

$241

Tue 1/135:32 pmORD - YOW

1 stop22h 53mMultiple Airlines

Tue 1/207:00 amYOW - ORD

1 stop15h 03mMultiple Airlines

Deal found 12/16

$260

Tue 1/1311:05 amMDW - YOW

1 stop12h 37mMultiple Airlines

Tue 1/205:40 amYOW - MDW

2 stops8h 11mMultiple Airlines

Deal found 12/16

$383

Thu 1/151:13 pmORD - YOW

1 stop10h 12mMultiple Airlines

Sun 1/187:00 amYOW - ORD

1 stop14h 57mMultiple Airlines

Deal found 12/16

$274

Thu 1/156:30 pmMDW - YOW

1 stop21h 55mMultiple Airlines

Sun 1/185:40 amYOW - MDW

1 stop10h 40mMultiple Airlines

Deal found 12/16

$316

Fri 1/1611:05 amMDW - YOW

1 stop19h 54mMultiple Airlines

Sun 1/184:35 pmYOW - MDW

2 stops8h 27mMultiple Airlines

Deal found 12/17

$367

Sun 1/187:58 pmORD - YOW

1 stop20h 17mMultiple Airlines

Tue 1/277:00 amYOW - ORD

1 stop15h 03mMultiple Airlines

Deal found 12/16

$261

Sun 1/184:15 pmMDW - YOW

1 stop14h 44mMultiple Airlines

Tue 1/275:40 amYOW - MDW

2 stops8h 09mMultiple Airlines

Deal found 12/16

$397

Fri 1/237:20 amORD - YOW

1 stop16h 05mMultiple Airlines

Sun 1/254:20 pmYOW - ORD

3 stops29h 43mMultiple Airlines

Deal found 12/16

$277

Fri 1/2311:05 amMDW - YOW

1 stop12h 37mMultiple Airlines

Sun 1/255:40 amYOW - MDW

1 stop10h 40mMultiple Airlines

Deal found 12/16

$314

Sat 1/2412:44 pmORD - YOW

1 stop10h 14mMultiple Airlines

Sun 1/254:20 pmYOW - ORD

3 stops32h 26mMultiple Airlines

Deal found 12/16

$275

Sat 1/2412:45 pmMDW - YOW

1 stop10h 57mMultiple Airlines

Sun 1/255:40 amYOW - MDW

1 stop10h 40mMultiple Airlines

Deal found 12/16

$349

One-way flights from Chicago to Ottawa
Search for one-way flight options from Chicago to Ottawa. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Fri 1/237:21 pmORD - YOW

1 stop18h 37mMultiple Airlines

Deal found 12/16

$91

Wed 1/147:21 pmORD - YOW

1 stop18h 37mMultiple Airlines

Deal found 12/15

$93

Mon 1/1910:07 amMDW - YOW

1 stop30h 06mMultiple Airlines

Deal found 12/16

$113

Mon 1/1912:44 pmORD - YOW

1 stop27h 29mMultiple Airlines

Deal found 12/16

$113

Fri 2/272:20 pmORD - YOW

1 stop9h 20mWestJet

Deal found 12/17

$117

Fri 2/2711:05 amMDW - YOW

1 stop12h 34mMultiple Airlines

Deal found 12/17

$120

Thu 1/158:43 pmORD - YOW

1 stop26h 42mMultiple Airlines

Deal found 12/15

$120

Sun 1/118:43 pmORD - YOW

1 stop19h 42mMultiple Airlines

Deal found 12/15

$132

Thu 1/295:40 amORD - YOW

2 stops17h 45mMultiple Airlines

Deal found 12/15

$137

Fri 1/2311:05 amMDW - YOW

1 stop12h 37mMultiple Airlines

Deal found 12/16

$150

Mon 1/191:26 pmMDW - YOW

2 stops10h 16mWestJet

Deal found 12/16

$201

Fri 1/231:26 pmMDW - YOW

2 stops10h 16mWestJet

Deal found 12/16

$204

Find flight deals from Chicago to Ottawa

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$249 (Mytrip)
One-way from	$91 (Kiwi.com)
Popular in	November
Cheapest in	May
Average price	$609
Good round-trip deal	$630 or less
Good one-way deal	$399 or less

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

Search Deals

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

Search Deals

From Chicago (CHI) to Ottawa

Search Deals

One-way flight from Chicago (CHI) to Ottawa

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($67 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

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

Search Deals

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

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 1/14

7:20 am-5:25 pm

1 stop9h 05m

Ottawa

Thu 1/15

7:00 am-8:57 pm

1 stop14h 57m

$250

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 1/18

7:58 pm-5:15 pm

1 stop20h 17m

Ottawa

Tue 1/27

7:00 am-9:03 pm

1 stop15h 03m

$261

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 1/23

5:15 am-12:42 am

2 stops18h 27m

Ottawa

Sun 1/25

4:20 pm-9:03 pm

3 stops29h 43m

$262

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 1/9

7:21 pm-2:58 pm

1 stop18h 37m

Ottawa

Mon 1/19

7:15 pm-1:57 pm

2 stops19h 42m

$262

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 1/14

7:21 pm-2:58 pm

1 stop18h 37m

Ottawa

Wed 1/21

7:00 am-9:03 pm

1 stop15h 03m

$267

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 1/23

11:05 am-12:42 am

1 stop12h 37m

Ottawa

Sun 1/25

5:40 am-3:20 pm

1 stop10h 40m

$314

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 1/15

11:05 am-5:29 pm

1 stop5h 24m

Ottawa

Sun 1/18

4:35 pm-12:02 am

2 stops8h 27m

$362

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 1/16

11:05 am-7:59 am

1 stop19h 54m

Ottawa

Sun 1/18

3:55 pm-12:02 am

1 stop9h 07m

$368

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 1/13

11:05 am-12:42 am

1 stop12h 37m

Ottawa

Tue 1/20

5:40 am-12:51 pm

2 stops8h 11m

$383

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sun 1/18

4:15 pm-7:59 am

1 stop14h 44m

Ottawa

Tue 1/27

5:40 am-12:49 pm

2 stops8h 09m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 28 results

Compare providers for flights from Chicago to Ottawa

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

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	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 Chicago-Ottawa flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Ottawa flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-Ottawa flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Chicago-Ottawa flights, Cheapflights users trust eDreams the most. eDreams 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 Chicago-Ottawa 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 Chicago to Ottawa

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

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

To ensure you get the cheapest price possible for a flight from Chicago to Ottawa, you should look to book at least 56 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Chicago to Ottawa (average of $103). Flying from Chicago to Ottawa in July is currently the most expensive (average of $236). 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 CHI to YOW?

It’s typically best to fly out from Chicago to Ottawa in the afternoon. Doing so could potentially save you 18% on the flight price compared to flying in the evening, which is usually more expensive.

How often are flights from Chicago to Ottawa delayed?

About 11% of weekly flights between Chicago and Ottawa have experienced delays in the past year, with the average delay time being 135 minutes.

What is the most punctual flight time for Chicago to Ottawa flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to Ottawa flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Porter Airlines, United Airlines, and Air Canada from Chicago to Ottawa to help guide your decision. 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

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Porter Airlines

8.0

Very good

399 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

United Airlines

7.4

Good

9,093 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Air Canada

7.1

Good

10,534 reviews

Porter Airlines

8.0

Very good

399 reviews

Reviews

1 / 20

8.0

Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

What airport do you fly into for flights to Ottawa from Chicago?
Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly into when you book flights from Chicago to Ottawa. 3 airlines have flights to Ottawa from Chicago on a regular basis. Booking flights from Chicago to Ottawa should not be difficult; the airport handles an average of 5 inbound flights from Chicago per day.
What are the cheapest airlines flying from Chicago to Ottawa round-trip?
Flying on Air Canada is currently your cheapest option to Ottawa, with prices starting at $189. Additional round-trip tickets that might be worth considering are offered by United Airlines and Porter Airlines, with the lowest prices starting at $236 and $250, respectively. Air Canada is 61% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Chicago to Ottawa one-way?
The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as $175. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Chicago to Ottawa for a low price.
What are the most reliable airlines from Chicago to Ottawa?
The top 3 most reliable airlines when flying from Chicago to Ottawa are SkyWest Airlines (100%), GoJet (100%) and United Airlines (81%).
What are the cheapest flights from Chicago to Ottawa?
While on average a flight from Chicago to Ottawa is generally $701, our data shows the cheapest flight currently is $139. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $260 for that flight.
Can I find deals for flights from Chicago to Ottawa that include hotel bookings?
Yes. In addition to deals on Chicago to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Chicago to Ottawa?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Ottawa.
Can I find deals for business class flights from Chicago to Ottawa?
Yes. Cheapflights offers flight deals from Chicago 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 Chicago to Ottawa?
Currently, April is the cheapest month in which you can book a flight from Chicago to Ottawa (average of $103). Flying from Chicago to Ottawa in July is currently the most expensive (average of $236). 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 Chicago to Ottawa

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Other flights to Ottawa

Top 3 airlines flying from Chicago to Ottawa

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$189	Average$328	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$236	Average$545	FlexibilityNo cancel fee	On-time69%
Porter Airlines	Cheapest$250	Average$370	FlexibilityNo cancel fee	On-time52%

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$91+ Cheap flights from Chicago (CHI) to Ottawa (YOW)

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.

Find cheap flights from Chicago to Ottawa with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in May or September, booked 57 days in advance, depart on a Saturday or Thursday and return on a Saturday

Cheap flight deals from Chicago to Ottawa

Cheapest flights from Chicago to OttawaExplore the most affordable flight options available from Chicago to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Chicago to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Chicago to Ottawa

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

Cheapflights Fare Finder

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

Compare providers for flights from Chicago to Ottawa

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 Chicago to Ottawa in December.

Best time to book a flight from Chicago to Ottawa

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

Cheapflights Insights

Everything you need to know about your flight from Chicago to Ottawa

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Ottawa. Price data was last updated on December 12, 2025.

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

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

Find hourly flight availability from Chicago 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 December 18, 2025.

How often are flights from Chicago to Ottawa delayed?

What is the most punctual flight time for Chicago to Ottawa flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Chicago to Ottawa flights?

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Porter Airlines, United Airlines, and Air Canada from Chicago to Ottawa to help guide your decision. 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 Chicago 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 Chicago?

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

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

What are the most reliable airlines from Chicago to Ottawa?

What are the cheapest flights from Chicago to Ottawa?

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

How can I find direct flights from Chicago to Ottawa?

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

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

Traveling to a place near Ottawa?

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Alternative routes for Chicago to Ottawa

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Top 3 airlines flying from Chicago to Ottawa

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Cheapest flights from Chicago to Ottawa
Explore the most affordable flight options available from Chicago to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.