Cheap flights from Ottawa to Chicago from $207
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Chicago departing on 7/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Ottawa to Chicago O'Hare Intl Airport
Our best United Airlines deals on Ottawa to Chicago O'Hare Intl Airport flight tickets
Air Canada flights from Ottawa to Chicago O'Hare Intl Airport
Our best Air Canada deals on Ottawa to Chicago O'Hare Intl Airport flight tickets
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How to get the cheapest flight ticket from Ottawa to Chicago O'Hare Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Chicago O'Hare Intl Airport?
The month of May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around $448.
What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Saturday when prices can be found for as low as $532. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Ottawa because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $705.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
Flying to Chicago O'Hare Intl Airport from Ottawa in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $575 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $661. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Ottawa to Chicago O'Hare Intl flight route?
Fly from Ottawa to Chicago O'Hare Intl for the best Ottawa - Chicago O'Hare Intl flight prices
How far in advance should I book a flight to Chicago O'Hare Intl Airport?
You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Ottawa when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $525 when searching 12 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Ottawa for as low as $435 on momondo.
What cabin class options are available on Ottawa to Chicago O'Hare Intl flights?
There are 4 cabin classes available to choose from on Ottawa to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Ottawa to Chicago O'Hare Intl?
WestJet, United Airlines, and Air Canada are the most popular carriers operating from Ottawa to Chicago O'Hare Intl
What airlines fly to Chicago O'Hare Intl Airport?
Air Canada, American Airlines and United Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 66% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ottawa to Chicago O'Hare Intl Airport on average per day?
The number of flights available between Ottawa and Chicago O'Hare Intl Airport is 12 per day as of June 2025. The most frequent departure time is 6:00AM, with 75% of daily flights leaving at noon.
How many flights depart from Ottawa to Chicago O'Hare Intl Airport on average per week?
The number of flights available between Ottawa and Chicago O'Hare Intl Airport is 84 per week as of June 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.
When to book flights from Ottawa to Chicago O'Hare Intl Airport
Cheap Ottawa to Chicago O'Hare Intl Airport (YOW to ORD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ottawa to Chicago O'Hare Intl Airport
How far is Ottawa to Chicago O'Hare Intl by plane?
Ottawa and Chicago O'Hare Intl are 653.1 mi apart from one another. A reasonable flight in good conditions will take 2h 19m.
When did momondo last update prices for flights from Ottawa Airport to Chicago O'Hare Intl Airport?
Prices for flights from Ottawa Airport to Chicago O'Hare Intl Airport are updated daily.
How many operators does momondo search for flights from Ottawa Airport to Chicago O'Hare Intl Airport?
As of June 2025, there are 2 operators available to choose from for flights from Ottawa Airport to Chicago O'Hare Intl Airport.
How old do you have to be to fly from Ottawa Airport to Chicago O'Hare Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ottawa Airport to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents required for your trip to Chicago O'Hare Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago O'Hare Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ottawa to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ottawa to Chicago O'Hare Intl Airport is Embraer 175 (Enhanced Winglets) (34.74% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (33.17%), Embraer 170 (14.96%), and Embraer 195 E2 (5.67%).
What is the most popular airline from Ottawa to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ottawa to Chicago O'Hare Intl Airport is Air Canada (65% of total bookings). The next most popular airline is United Airlines (35%).
Best airlines flying from Ottawa to Chicago O'Hare Intl Airport
Compare and see reviews for airlines that fly from Ottawa to Chicago O'Hare Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $410 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $423 | Free Cancellation | Rating 7.1 9,537 reviews |
United Airlines Flights From Ottawa to Chicago O'Hare Intl Airport
United Airlines is one of the most popular airlines flying from Ottawa to Chicago O'Hare Intl Airport, operating 21 flights/week on average for this route. A good United Airlines flight deal for Ottawa to Chicago O'Hare Intl Airport starts from $410 round-trip, up to an average price of $606. Our users have rated United Airlines at 7.4/10.
Air Canada Flights From Ottawa to Chicago O'Hare Intl Airport
Air Canada is also a popular choice for this route. Air Canada flight deals for Ottawa to Chicago O'Hare Intl Airport start from as low as $423 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $550. Air Canada operates 21 flights to Chicago O'Hare Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 9,537 reviews.
Traveling to a place near Chicago?
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Why should I use momondo to find a flight deal from Ottawa to Chicago?
Finding the right flight to Chicago from Ottawa is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.
Can I find flights from Ottawa to Chicago with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Chicago from Ottawa with this policy.
How can momondo help me find flights from Ottawa to Chicago?
momondo provides multiple filters to help you find the best flight to Chicago from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Ottawa to Chicago right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Ottawa to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.