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Cheap flights from Chicago to Ottawa from C$ 177

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 30/5. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YOW
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in July or January, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Chicago to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 April 2025.

Round-trip from

C$ 341

One-way from

C$ 177

Popular in

November

Cheapest in

July

Average price

C$ 676

Good round-trip deal

C$ 677 or less

Good one-way deal

C$ 129 or less
Porter Airlines
  • Porter Airlines
  • 26/5-30/5
  • 2 total stops
  • 11h 12m total
  • Chicago to Ottawa
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Porter Airlines
  • Porter Airlines
  • 30/5
  • 1 total stop
  • 5h 53m total
  • Chicago to Ottawa
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Highest demand for flights based on searches. 4% potential increase in price (C$ 48 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 17 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Ottawa.
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Price to beat on a one-way flight from Chicago (CHI) to Ottawa.
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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 15 April 2025.

Mon 26/59:40 a.m.MDW - YOW
1 stop5h 53mPorter Airlines
Fri 30/512:35 p.m.YOW - MDW
1 stop5h 19mPorter Airlines
Deal found 14/4C$ 341
Mon 12/55:20 p.m.ORD - YOW
2 stops30h 02mMultiple Airlines
Wed 28/56:00 a.m.YOW - ORD
2 stops25h 42mMultiple Airlines
Deal found 13/4C$ 453
Thu 15/59:40 a.m.MDW - YOW
1 stop5h 53mMultiple Airlines
Sun 18/54:25 p.m.YOW - MDW
2 stops22h 09mMultiple Airlines
Deal found 14/4C$ 622
Fri 30/56:15 p.m.ORD - YOW
Nonstop2h 20mAir Canada
Fri 6/66:40 a.m.YOW - ORD
Nonstop2h 22mAir Canada
Deal found 15/4C$ 670
Sat 14/61:40 p.m.ORD - YOW
1 stop14h 45mWestJet
Sun 15/67:15 p.m.YOW - ORD
1 stop22h 29mWestJet
Deal found 15/4C$ 672
Mon 26/56:15 p.m.ORD - YOW
Nonstop2h 20mUnited Airlines
Fri 30/56:40 a.m.YOW - ORD
Nonstop2h 22mUnited Airlines
Deal found 14/4C$ 783
Tue 10/69:24 a.m.MDW - YOW
2 stops13h 58mDelta
Wed 18/65:55 a.m.YOW - MDW
2 stops13h 46mDelta
Deal found 14/4C$ 1,167
Thu 24/412:48 p.m.MDW - YOW
2 stops30h 59mWestJet
Thu 1/53:45 p.m.YOW - MDW
2 stops31h 37mWestJet
Deal found 15/4C$ 1,532

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 April 2025.
Use the filters below to find and compare flights from Chicago to Ottawa that are best for you.

Fly from

Chicago

Fly to

Ottawa

Route

Depart

Return

Price

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 26/5

9:40 a.m.-4:33 p.m.

1 stop5h 53m

Ottawa

Fri 30/5

12:35 p.m.-4:54 p.m.

1 stop5h 19m

C$ 341

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 12/5

5:20 p.m.-12:22 a.m.

2 stops30h 02m

Ottawa

Wed 28/5

6:00 a.m.-6:42 a.m.

2 stops25h 42m

C$ 453

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 15/5

9:40 a.m.-4:33 p.m.

1 stop5h 53m

Ottawa

Sun 18/5

4:25 p.m.-1:34 p.m.

2 stops22h 09m

C$ 622

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 30/5

6:15 p.m.-9:35 p.m.

Nonstop2h 20m

Ottawa

Fri 6/6

6:40 a.m.-8:02 a.m.

Nonstop2h 22m

C$ 670

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 14/6

1:40 p.m.-5:25 a.m.

1 stop14h 45m

Ottawa

Sun 15/6

7:15 p.m.-4:44 p.m.

1 stop22h 29m

C$ 672

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 26/5

6:15 p.m.-9:35 p.m.

Nonstop2h 20m

Ottawa

Fri 30/5

6:40 a.m.-8:02 a.m.

Nonstop2h 22m

C$ 783

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 10/6

9:24 a.m.-12:22 a.m.

2 stops13h 58m

Ottawa

Wed 18/6

5:55 a.m.-6:41 p.m.

2 stops13h 46m

C$ 1,167

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 25/4

10:20 a.m.-12:09 a.m.

2 stops12h 49m

Ottawa

Thu 1/5

5:15 p.m.-5:19 p.m.

2 stops25h 04m

C$ 1,580

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 30/5

9:40 a.m.-4:33 p.m.

1 stop5h 53m

C$ 177

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 16/5

9:08 p.m.-3:56 p.m.

1 stop17h 48m

C$ 181

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/4

Showing 1-10 of 15 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Ottawa. Price data was last updated on 11 April 2025.

To ensure you get the cheapest price possible for a flight from Chicago to Ottawa, you should look to book at least 53 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, October is the cheapest month in which you can book a flight from Chicago to Ottawa (average of C$ 224). Flying from Chicago to Ottawa in December is currently the most expensive (average of C$ 326). 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?

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 15 April 2025.

When flying from Chicago to Ottawa, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 40% versus a flight in the morning.

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 15 April 2025.

The most flights from CHI to YOW are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Ottawa by month

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

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 15 April 2025.
Read reviews from past customers who have flown Porter Airlines, Delta and United Airlines from Chicago to Ottawa. 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
281 reviews
Check prices

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.7

Boarding

8.2

Food

7.6

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Porter Airlines
8.0
Very good
281 reviews
Porter Airlines
8.0
Very good
281 reviews
Check prices

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.7

Boarding

8.2

Food

7.6

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Delta
8.0
Very good
7,917 reviews
Porter Airlines
8.0
Very good
281 reviews
Check prices

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.7

Boarding

8.2

Food

7.6

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
United Airlines
7.4
Good
8,658 reviews
Porter Airlines
8.0
Very good
281 reviews
Check prices

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.7

Boarding

8.2

Food

7.6

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
WestJet
7.2
Good
2,805 reviews
Porter Airlines
8.0
Very good
281 reviews
Check prices

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.7

Boarding

8.2

Food

7.6

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Air Canada
7.0
Good
9,127 reviews
Porter Airlines
8.0
Very good
281 reviews
Check prices

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.7

Boarding

8.2

Food

7.6

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

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?

    If you book a flight to Ottawa from Chicago, you will be flying to Ottawa, which is the city’s only airport. Ottawa (YOW) is located 10.6 km from the centre of Ottawa. There are 12 flights from Chicago to Ottawa per day from 0 different airlines.

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

    According to our current data, Porter Airlines (C$ 341), Air Canada (C$ 670), and WestJet (C$ 672) offers the cheapest pricing from Chicago to Ottawa. Porter Airlines is priced at 50% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at C$ 177. Air Canada flights start at C$ 359 while deals on United Airlines start at C$ 371 one-way.

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

    Consider Avianca (90%), Republic Airways (87%) or Emirates (87%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Ottawa.

  • What are the cheapest flights from Chicago to Ottawa?

    On average you can expect to pay C$ 521 for a flight from Chicago to Ottawa. The cheapest flight overall is C$ 129 while the most popular route, (Chicago O'Hare Intl - Ottawa) is currently priced at C$ 453.

  • 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, October is the cheapest month in which you can book a flight from Chicago to Ottawa (average of C$ 224). Flying from Chicago to Ottawa in December is currently the most expensive (average of C$ 326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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