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

Flying on Porter Airlines is currently your cheapest option to Ottawa, with prices starting at $339. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $516 and $588, respectively. Porter Airlines is 31% 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 $145. 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 is the cheapest day to fly from Chicago to Ottawa?

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

What are the cheapest flights from Chicago to Ottawa?

While on average a flight from Chicago to Ottawa is generally $495, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $387 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 Avianca (87%), Republic Airways (86%) and ANA (84%).

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

Monday flights are generally found to be more expensive for flights from Chicago to Ottawa. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ottawa.

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

To save on the cost of your flight from Chicago to Ottawa, book at least 57 days before your planned departure. Booking around this time can save you about 282% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $478 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $608.

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

Our data shows that July tends to be the cheapest month to fly to Ottawa from Chicago. Users have commonly found prices around $495 for the month, but tickets can be as low as $290. Due to multiple factors, prepare for potentially higher prices in November.

Most accurate provider : When it comes to deals on Chicago-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Ottawa flight deals on Cheapflights vs. FlightHub >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 7 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.

$142+ Flights from Chicago to Ottawa - Compare & Save Big

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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.

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.

Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in July or January, booked 57 days in advance, depart on a Friday or Monday and return on a Saturday

Cheap flight deals from Chicago to Ottawa

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$312 (Kiwi.com)
One-way from	$142 (Trip.com)
Popular in	November
Cheapest in	July
Average price	$487
Good round-trip deal	$498 or less
Good one-way deal	$257 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. 5% potential increase in price ($25 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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

Find 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 April 29, 2025.

Thu 5/299:40 amMDW - YOW

1 stop13h 42mMultiple Airlines

Sun 6/15:55 amYOW - MDW

1 stop11h 59mMultiple Airlines

Deal found 4/29

$312

Mon 5/269:40 amMDW - YOW

1 stop5h 53mPorter Airlines

Mon 6/212:35 pmYOW - MDW

1 stop5h 19mPorter Airlines

Deal found 4/29

$339

Fri 6/134:43 pmORD - YOW

1 stop6h 39mMultiple Airlines

Fri 6/205:55 amYOW - ORD

1 stop10h 55mMultiple Airlines

Deal found 4/29

$346

Thu 5/292:16 pmORD - YOW

Nonstop2h 13mAir Canada

Sun 6/16:40 amYOW - ORD

Nonstop2h 22mAir Canada

Deal found 4/29

$516

Sat 6/217:00 amORD - YOW

1 stop6h 27mUnited Airlines

Sat 6/215:25 pmYOW - ORD

Nonstop2h 28mUnited Airlines

Deal found 4/29

$588

Mon 7/285:30 pmORD - YOW

2 stops21h 50mWestJet

Tue 8/512:20 pmYOW - ORD

2 stops25h 19mWestJet

Deal found 4/29

$730

Thu 7/312:44 pmMDW - YOW

2 stops10h 38mDelta

Thu 7/105:55 amYOW - MDW

2 stops7h 34mDelta

Deal found 4/29

$745

Sun 7/139:00 amORD - YOW

2 stops14h 22mDelta

Mon 7/215:55 amYOW - ORD

2 stops13h 12mDelta

Deal found 4/29

$792

Sat 6/1412:44 pmMDW - YOW

2 stops10h 38mWestJet

Sun 6/156:10 amYOW - MDW

2 stops12h 52mWestJet

Deal found 4/29

$1,122

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 April 29, 2025.

Thu 5/299:40 amMDW - YOW

1 stop13h 42mMultiple Airlines

Sun 6/15:55 amYOW - MDW

1 stop11h 59mMultiple Airlines

Deal found 4/29

$312

Mon 5/269:40 amMDW - YOW

1 stop5h 53mPorter Airlines

Mon 6/212:35 pmYOW - MDW

1 stop5h 19mPorter Airlines

Deal found 4/29

$339

Thu 5/292:16 pmORD - YOW

Nonstop2h 13mAir Canada

Sun 6/16:40 amYOW - ORD

Nonstop2h 22mAir Canada

Deal found 4/29

$516

Sat 6/217:00 amORD - YOW

1 stop6h 27mUnited Airlines

Sat 6/215:25 pmYOW - ORD

Nonstop2h 28mUnited Airlines

Deal found 4/29

$588

Fri 6/134:43 pmORD - YOW

1 stop6h 39mMultiple Airlines

Fri 6/205:55 amYOW - ORD

1 stop10h 55mMultiple Airlines

Deal found 4/29

$346

Mon 7/285:30 pmORD - YOW

2 stops21h 50mWestJet

Tue 8/512:20 pmYOW - ORD

2 stops25h 19mWestJet

Deal found 4/29

$730

Thu 7/312:44 pmMDW - YOW

2 stops10h 38mDelta

Thu 7/105:55 amYOW - MDW

2 stops7h 34mDelta

Deal found 4/29

$745

Sun 7/139:00 amORD - YOW

2 stops14h 22mDelta

Mon 7/215:55 amYOW - ORD

2 stops13h 12mDelta

Deal found 4/29

$792

Sat 6/1412:44 pmMDW - YOW

2 stops10h 38mWestJet

Sun 6/156:10 amYOW - MDW

2 stops12h 52mWestJet

Deal found 4/29

$1,122

Last-minute flights from Chicago to Ottawa
Discover last-minute flight deals from Chicago to Ottawa. Data last updated April 29, 2025 and is based on user searches.

Thu 5/89:40 amMDW - YOW

1 stop7h 33mPorter Airlines

Sun 5/1112:35 pmYOW - MDW

1 stop5h 19mPorter Airlines

Deal found 4/29

$438

Thu 5/85:05 amORD - YOW

1 stop11h 10mMultiple Airlines

Sun 5/114:25 pmYOW - ORD

1 stop8h 04mMultiple Airlines

Deal found 4/29

$490

Thu 5/81:19 pmMDW - YOW

2 stops17h 32mMultiple Airlines

Sun 5/1112:35 pmYOW - MDW

1 stop5h 19mMultiple Airlines

Deal found 4/29

$723

Thu 5/89:02 amORD - YOW

1 stop5h 02mAir Canada

Sun 5/116:30 amYOW - ORD

1 stop4h 31mAir Canada

Deal found 4/29

$1,052

Thu 5/82:22 pmORD - YOW

Nonstop2h 11mUnited Airlines

Sun 5/116:33 amYOW - ORD

Nonstop2h 29mUnited Airlines

Deal found 4/29

$1,058

Thu 5/89:20 amMDW - YOW

2 stops30h 00mWestJet

Sun 5/116:00 amYOW - MDW

2 stops16h 28mWestJet

Deal found 4/29

$1,184

Thu 5/811:03 amORD - YOW

2 stops17h 22mWestJet

Sun 5/116:00 amYOW - ORD

2 stops13h 48mWestJet

Deal found 4/29

$1,214

Thu 5/811:03 amORD - YOW

2 stops12h 19mDelta

Sun 5/115:55 amYOW - ORD

2 stops11h 35mDelta

Deal found 4/29

$1,602

Thu 5/89:16 amMDW - YOW

2 stops14h 06mDelta

Sun 5/115:55 amYOW - MDW

2 stops12h 48mDelta

Deal found 4/29

$1,609

Fri 5/165:30 pmORD - YOW

2 stops29h 52mWestJet

Mon 5/196:10 amYOW - ORD

2 stops11h 34mWestJet

Deal found 4/28

$991

Sat 5/246:15 pmORD - YOW

Nonstop2h 20mUnited Airlines

Mon 5/265:25 pmYOW - ORD

Nonstop2h 28mUnited Airlines

Deal found 4/29

$714

Mon 5/269:40 amMDW - YOW

1 stop5h 53mPorter Airlines

Mon 6/212:35 pmYOW - MDW

1 stop5h 19mPorter Airlines

Deal found 4/29

$339

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 April 29, 2025.

Fri 6/139:40 amMDW - YOW

1 stop13h 42mMultiple Airlines

Deal found 4/29

$142

Sat 6/149:40 amMDW - YOW

1 stop7h 28mPorter Airlines

Deal found 4/29

$145

Tue 5/279:08 pmORD - YOW

1 stop17h 03mMultiple Airlines

Deal found 4/29

$151

Fri 8/2910:00 amORD - YOW

1 stop6h 05mAir Canada

Deal found 4/28

$271

Fri 8/294:00 pmORD - YOW

2 stops20h 10mUnited Airlines

Deal found 4/28

$301

Tue 5/2711:05 amORD - YOW

3 stops17h 20mWestJet

Deal found 4/29

$445

Fri 6/1312:44 pmMDW - YOW

2 stops15h 41mWestJet

Deal found 4/29

$494

Fri 6/209:24 amMDW - YOW

2 stops13h 58mDelta

Deal found 4/29

$502

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 5/29

9:40 am-12:22 am

1 stop13h 42m

Ottawa

Sun 6/1

5:55 am-4:54 pm

1 stop11h 59m

$312

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 5/26

9:40 am-4:33 pm

1 stop5h 53m

Ottawa

Mon 6/2

12:35 pm-4:54 pm

1 stop5h 19m

$339

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 6/13

4:43 pm-12:22 am

1 stop6h 39m

Ottawa

Fri 6/20

5:55 am-3:50 pm

1 stop10h 55m

$346

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 5/29

2:16 pm-5:29 pm

Nonstop2h 13m

Ottawa

Sun 6/1

6:40 am-8:02 am

Nonstop2h 22m

$516

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 6/21

7:00 am-2:27 pm

1 stop6h 27m

Ottawa

Sat 6/21

5:25 pm-6:53 pm

Nonstop2h 28m

$588

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 7/28

5:30 pm-4:20 pm

2 stops21h 50m

Ottawa

Tue 8/5

12:20 pm-12:39 pm

2 stops25h 19m

$730

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 7/3

12:44 pm-12:22 am

2 stops10h 38m

Ottawa

Thu 7/10

5:55 am-12:29 pm

2 stops7h 34m

$745

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 7/13

9:00 am-12:22 am

2 stops14h 22m

Ottawa

Mon 7/21

5:55 am-6:07 pm

2 stops13h 12m

$792

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sat 6/14

12:44 pm-12:22 am

2 stops10h 38m

Ottawa

Sun 6/15

6:10 am-6:02 pm

2 stops12h 52m

$1,122

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 6/13

9:40 am-12:22 am

1 stop13h 42m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 17 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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Ottawa flight deals on Cheapflights vs. FlightHub >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, January is the cheapest month in which you can book a flight from Chicago to Ottawa (average of $294). Flying from Chicago to Ottawa in June is currently the most expensive (average of $460). 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 morning. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from Chicago to Ottawa

The most flights from CHI to YOW are scheduled on a Monday (13 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Ottawa by month

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.

Temperature in Ottawa by month

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).

Reviews of airlines servicing Ottawa

Read through reviews of airlines operating flights from Chicago to Ottawa, such as Porter Airlines, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Porter Airlines

8.0

Very good

285 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Delta

8.0

Very good

7,936 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

United Airlines

7.4

Good

8,696 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

WestJet

7.2

Good

2,823 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Air Canada

7.0

Good

9,242 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

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 7 inbound flights from Chicago per day.
What are the cheapest airlines flying from Chicago to Ottawa round-trip?
Flying on Porter Airlines is currently your cheapest option to Ottawa, with prices starting at $339. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $516 and $588, respectively. Porter Airlines is 31% 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 $145. 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 Avianca (87%), Republic Airways (86%) and ANA (84%).
What are the cheapest flights from Chicago to Ottawa?
While on average a flight from Chicago to Ottawa is generally $495, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $387 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, January is the cheapest month in which you can book a flight from Chicago to Ottawa (average of $294). Flying from Chicago to Ottawa in June is currently the most expensive (average of $460). 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

Gatineau

Brockville

Pembroke

Petawawa

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Chicago to Ottawa

O'Hare Intl to Pierre Elliott Trudeau Intl flights

O'Hare Intl to Pearson Intl flights

Midway to Pierre Elliott Trudeau Intl flights

Midway to Pearson Intl flights

O'Hare Intl to Toronto Island flights

Midway to Toronto Island flights

O'Hare Intl to Ottawa flights

St. Louis to Pearson Intl flights

St. Louis to Pierre Elliott Trudeau Intl flights

Midway to Ottawa flights

O'Hare Intl to Hamilton flights

O'Hare Intl to London flights

Moline to Pearson Intl flights

O'Hare Intl to Thunder Bay flights

Midway to Thunder Bay flights

St. Louis to Ottawa flights

Bloomington to Pierre Elliott Trudeau Intl flights

Peoria to Pierre Elliott Trudeau Intl flights

Springfield to Pearson Intl flights

O'Hare Intl to Kingston flights

Bloomington to Ottawa flights

Evansville to Pearson Intl flights

Evansville to Pierre Elliott Trudeau Intl flights

Dubuque to Pearson Intl flights

Champaign to Pearson Intl flights

Complete your trip

Ottawa car rentals

Montreal Pierre Elliott Trudeau Intl Airport car rentals

Ottawa Airport car rentals

Kingston Airport car rentals

Toronto car rentals

London car rentals

Windsor car rentals

Kitchener car rentals

Kingston car rentals

Niagara Falls car rentals

Kanata car rentals

The Glebe car rentals

Other flights to Ottawa

Top 3 airlines flying from Chicago to Ottawa

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$236	Average$452	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$236	Average$674	FlexibilityNo cancel fee	On-time69%
Porter Airlines	Cheapest$250	Average$460	FlexibilityNo cancel fee	On-time52%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$142+ 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 6/13. 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

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in July or January, booked 57 days in advance, depart on a Friday or Monday and return on a Saturday

Cheap 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

Find 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 April 29, 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 April 29, 2025.

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 April.

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 April 25, 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 April 29, 2025.

Weekly flight availability from Chicago to Ottawa

Explore weekly flight availability from Chicago to Ottawa. 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 April 29, 2025.

Rainfall in Ottawa by month

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

Temperature in Ottawa by month

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

Reviews of airlines servicing Ottawa

Read through reviews of airlines operating flights from Chicago to Ottawa, such as Porter Airlines, Delta and United Airlines. 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 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 Chicago?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Ottawa

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

Top 3 airlines flying from Chicago to Ottawa

100% Free

Book with Flexibility

Travel Smart

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 April 29, 2025.