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Flights from Chicago to Ottawa

Cheapest airlines flights from Chicago to Ottawa

You can pick from 2 carriers that fly from Chicago to Ottawa including United Airlines, Air Canada, , with United Airlines serving cheapest ticket on this route.
United Airlines logo United Airlines Air Canada logo Air Canada

Find direct flights from Chicago to Ottawa: One way flights from US$298, round trip flights from US$664 – book for the next 3 months.

      • Cheapest nonstop
        ORD 13:59
        2h 13m
        Nonstop
        YOW 17:12
        Chicago - Ottawa | Fri, Dec 12 | Air Canada
        YOW 11:10
        2h 41m
        Nonstop
        ORD 12:51
        Ottawa - Chicago | Sun, Dec 14 | Air Canada
        US$664 US$747
        11% OFF
        11% OFF
        US$747 US$664
      • ORD 13:59
        2h 13m
        Nonstop
        YOW 17:12
        Chicago - Ottawa | Sat, Dec 13 | United Airlines
        YOW 17:14
        2h 41m
        Nonstop
        ORD 18:55
        Ottawa - Chicago | Mon, Dec 15 | United Airlines
        US$665 US$747
        11% OFF
        11% OFF
        US$747 US$665
      • MDW 11:00
        5h 29m
        1 stop
        YOW 17:29
        Chicago - Ottawa | Mon, Dec 29 | Porter Airlines
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$330 US$747
        56% OFF
        56% OFF
        US$747 US$330
      • MDW 16:15
        3h 39m
        1 stop
        YOW 20:54
        Chicago - Ottawa | Fri, Dec 26 | Porter Airlines
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$355
        52% OFF
        US$747 US$355
      • MDW 16:15
        3h 39m
        1 stop
        YOW 20:54
        Chicago - Ottawa | Sun, Dec 28 | Porter Airlines
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$411
        45% OFF
        US$747 US$411
      • MDW 11:00
        10h 29m
        1 stop
        YOW 22:29
        Chicago - Ottawa | Mon, Dec 29 | Air Transat
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$415
        44% OFF
        US$747 US$415
      • MDW 16:15
        3h 39m
        1 stop
        YOW 20:54
        Chicago - Ottawa | Sat, Dec 27 | Apg Airlines
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$436
        42% OFF
        US$747 US$436
      • MDW 12:45
        3h 44m
        1 stop
        YOW 17:29
        Chicago - Ottawa | Sat, Dec 13 | Porter Airlines
        YOW 06:50
        4h 15m
        1 stop
        MDW 10:05
        Ottawa - Chicago | Mon, Dec 15 | Porter Airlines
        US$436
        42% OFF
        US$747 US$436
      • ORD 20:15
        4h 23m
        1 stop
        YOW 01:38
        Chicago - Ottawa | Fri, Dec 26 | Air Canada
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$474
        37% OFF
        US$747 US$474
      • ORD 10:00
        6h 18m
        1 stop
        YOW 17:18
        Chicago - Ottawa | Mon, Dec 29 | Air Canada
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$475
        37% OFF
        US$747 US$475
      • ORD 20:30
        4h 8m
        1 stop
        YOW 01:38
        Chicago - Ottawa | Sat, Dec 27 | Air Canada
        YOW 06:50
        4h 20m
        1 stop
        MDW 10:10
        Ottawa - Chicago | Fri, Jan 2 | Porter Airlines
        US$476
        36% OFF
        US$747 US$476
      • ORD 18:28
        6h 10m
        1 stop
        YOW 01:38
        Chicago - Ottawa | Fri, Dec 12 | Air Canada
        YOW 12:10
        4h 10m
        1 stop
        MDW 15:20
        Ottawa - Chicago | Sun, Dec 14 | Porter Airlines
        US$490
        34% OFF
        US$747 US$490
      • CHI 13:00
        17h 25m
        1 stop
        YOW Invalid Date
        Chicago - Ottawa | Mon, Dec 8 | Normal Airline
        YOW 15:00
        6h
        Nonstop
        CHI 16:00
        Ottawa - Chicago | Wed, Dec 10 | Normal Airline
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Displayed flight fares from Chicago to Ottawa are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Chicago to Ottawa Flight Details

The distance between Chicago and Ottawa is approximately 1,036.09 km. On average, a flight from Chicago to Ottawa takes around 2 hours 13 minutes. The most popular month to fly to Ottawa is July. The off-season for travel is October.

Cheapest one-way flight priceUS$106
Cheapest return ticket priceUS$330
Cheapest monthOctober
Peak season for travelJuly
Flight distance1,036.09 km
Average flight time2 hours 13 minutes
Popular airlineUnited Airlines

When is the cheapest time to book flights from Chicago to Ottawa?

The cheapest time to fly from Chicago to Ottawa: Jan 11 to Jan 18 — one-way prices start at US$105.

Cheapest flights
From price
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  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Chicago to Ottawa (CHI-YOW)?

    Based on Trip.com data, Air Canada offers one-way fares as low as US$106 on Cheapest nonstop routes (e.g. ORD to YOW on Wed, Jan 14), while Porter Airlines offers Cheapest nonstop round-trips from US$330 departing on Mon, Dec 29 and returning on Fri, Jan 2.
  • It takes about 2 hours 13 minutes to fly from Chicago to Ottawa.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to Ottawa is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Chicago to Ottawa, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Jan 14, with one-way flights priced at just US$106.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Ottawa travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Chicago to Ottawa is October, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Chicago to Ottawa on December 12, 2025 with Porter Airlines, with prices starting at US$319.
  • The time difference between Ottawa and Chicago is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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