Cheap flights from Ottawa to Chicago

Macdonald-Cartier
YOW
Chicago FSS
CHI

Flight deals from Ottawa to Chicago

Below you can see the best deals on flights Ottawa — Chicago for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 9 September, from $187.

Top 10 cheap flights from Ottawa to Chicago

WS
DL
DL
$ 187

Ottawa — Chicago

06:55—16:57
9 Sep 2026
11 h 2 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—20:30
9 Sep 2026
14 h 35 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—16:13
10 Sep 2026
10 h 18 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—16:14
12 Sep 2026
10 h 19 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—16:57
12 Sep 2026
11 h 2 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—20:30
12 Sep 2026
14 h 35 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—19:15
12 Sep 2026
13 h 20 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—21:38
12 Sep 2026
15 h 43 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—16:13
15 Sep 2026
10 h 18 m
2 stops
WS
DL
DL
$ 187

Ottawa — Chicago

06:55—22:18
15 Sep 2026
16 h 23 m
2 stops

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Ottawa — Chicago flight

Looking for cheap flights from Ottawa to Chicago? Compare fares from different airlines, check the flight schedule and travel time — and book your Ottawa — Chicago ticket online at the best price.

The route has direct flights — around 39 flights per week, flights are operated by United Airlines, Air Canada, a nonstop flight takes about 2 h 20 min, the distance between the cities is around 1,038 km.

Planning your trip? You may find our Chicago travel guide, how to get from the airport into town and Chicago weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $187Min. price
SeptemberCheapest
NovemberPeak season
YesDirect flights
1,038 kmDistance
2 h 20 minTravel time
2Airlines
39 / wkFlights

Flight schedule from Ottawa to Chicago

The table shows direct flights from Ottawa to Chicago on the selected date. The flight takes approximately 2 h 20 min. Regular flights are operated by United Airlines and Air Canada. Departures from Ottawa Macdonald–Cartier International Airport airports, arrivals at O'Hare International Airport, Chicago Midway International Airport and Midway International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 16 Aug 2026

Flight ticket prices by day: Ottawa — Chicago

Below is a calendar of the lowest flight ticket prices for Ottawa — Chicago by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $187 in September, and the most expensive are around $270 in November. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--

Prices by month

Average one-way fares from Ottawa to Chicago by month. Tickets are usually cheapest in August (around $184) and priciest in January (about $300) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$300highMay$267highSep$192low
Feb$234mediumJun$284highOct$200low
Mar$242mediumJul$292highNov$275high
Apr$225mediumAug$184lowDec$259medium

Some values are estimated based on seasonality.

When to fly

Weather in Chicago: it is warmest in July (up to 27 °C on average) and coolest in January (around 0 °C). The driest month is November.

Tickets are usually cheapest in September and most expensive in November. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Chicago

Dry and wet days · Chicago

Wind speed and direction · Chicago

We'll let you know if you need a visa

Enter your destination or
Your nationality
Destination

How to get the best deal on a Ottawa — Chicago ticket

  • Book ahead: fares for Ottawa — Chicago are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to Chicago is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Ottawa — Chicago route are operated by 2 airlines; United Airlines runs the most flights (around 59% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    8x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight YOW → ORD8x/week
      Duration
      2h 20m
      Days
      MTWTFSS
    59.0%Open →
  • Air CanadaAC
    5x/week
    WebsiteFleet: 20346M pax/year
    • Direct flight YOW → ORD5x/week
      Duration
      2h
      Days
      MTWTFSS
    41.0%Open →

Cities and airports on the Ottawa — Chicago route

Flights Ottawa — Chicago depart from Ottawa Macdonald–Cartier International Airport and arrive at O'Hare International Airport, Chicago Midway International Airport, Midway International Airport and Chicago Rockford International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Ottawa

YOW
Canada
About the cityHow to get thereWeatherAll about the country Canada
Arrival

Chicago

CHI
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

Interesting articles about Chicago

Did you know that some airports have beds?Interesting

Did you know that some airports have beds?

Did you know that some airports have beds? They are intended for passengers whose flights were canceled due to bad weather or other force majeure circumstances. These unfortunate travelers are offered…

The World’s Largest CitiesInteresting

The World’s Largest Cities

If you prefer non-stop action to quiet solitude somewhere by the sea or in the mountains—this article is for you. We’ve already told you about the oldest cities in the world, and now it’s time to delv…

Cemeteries as Museums: A Guide to the Most Beautiful NecropolisesInteresting

Cemeteries as Museums: A Guide to the Most Beautiful Necropolises

For many, a walk through a cemetery is a plot from a gothic novel or a forced necessity. But experienced travelers know: ancient burial grounds are the most honest open-air museums. There is no urban…

Tips for Travelers

5 Airports with Free City Tours

Have a long layover at the airport? Don’t rush to get upset! If you are flying through one of the cities we’ll tell you about in this article, you can count on a free tour. ISTANBUL. ATATÜRK AIRPORT I…

Looking Down: The Best Observation Decks in the WorldTips for Travelers

Looking Down: The Best Observation Decks in the World

To better understand a city or admire the surrounding nature, you need to climb higher. The ascent isn’t always easy, but it’s worth it for the experience and the view from the top. If you’re not afra…

See half the world from a portholeInteresting

See half the world from a porthole

Recently, we wrote about a Qatar Airways aircraft that completed the world’s longest commercial flight from Doha (Qatar) to Auckland (New Zealand) and how it was welcomed in the “new territory”. Today…

Frequently asked questions about the Ottawa — Chicago flight

How long is the flight from Ottawa to Chicago?

A nonstop Ottawa — Chicago flight takes about 2 h 20 min — the distance between the cities is around 1,038 km.

How far is it from Ottawa to Chicago?

The distance from Ottawa to Chicago is about 1,038 km, which a nonstop flight covers in around 2 h 20 min.

Are there direct flights from Ottawa to Chicago?

Yes, there are nonstop flights Ottawa — Chicago — around 39 flights per week.

Which airlines fly from Ottawa to Chicago?

Airlines operating Ottawa — Chicago include United Airlines, Air Canada. See the full list with schedules in the "Airlines" section on this page.

Which airports do Ottawa — Chicago flights use?

Flights from Ottawa depart from Ottawa Macdonald–Cartier International Airport, and arrive at O'Hare International Airport, Chicago Midway International Airport, Midway International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Ottawa to Chicago?

The price of a Ottawa — Chicago ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in November. Tickets typically cost between $187 and $270. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Ottawa — Chicago?

Flights Ottawa — Chicago are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Ottawa to Chicago?

To catch a low fare Ottawa — Chicago, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Ottawa

See all
TorontoMontrealHalifaxCalgaryNew York CityWashington, D.C.VancouverWinnipegMonctonEdmontonQuebec CityFrederictonCancunPunta CanaThunder BayLondonFort LauderdaleParisBostonLiberiaSt. John'sOrlandoCharlottetownNassauMontego BayIqaluitWindsorPuerto PlataKuujjuaqTampaVictoriaFort MyersMexico CityTokyo

Where else you can fly from Chicago

See all
New York CityTorontoDetroitWashington, D.C.AtlantaMinneapolisLos AngelesSeattleBostonDallasHoustonOrlandoDenverNashvilleLondonIndianapolisSan DiegoMontrealMilwaukeeSt. LouisCharlottePhiladelphiaColumbusKansas CityPhoenixMiamiLas VegasCincinnatiGrand RapidsDes MoinesRaleighSan FranciscoMadisonDaytonGreen BayTampaPittsburghLouisvilleKnoxvilleRochester

We use cookies and services to collect user information. This is essential for the functioning of the site and for marketing purposes. You can find out more in .