Cheap flights from Ottawa to Chicago from C$ 283
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 26/7. 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?
In general, June is the cheapest month to fly from Ottawa to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 596. The month of May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 613.
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 Tuesday when prices can be found for as low as C$ 801. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to Chicago O'Hare Intl Airport for around C$ 911.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
In the afternoon is the cheapest time of day to fly from Ottawa to Chicago O'Hare Intl Airport when you can find flight prices for as low as C$ 765. Flying to Chicago O'Hare Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 893 on average. Flights to Chicago O'Hare Intl Airport from Ottawa in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.
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 C$ 718 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 C$ 595 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
Which airlines fly to Chicago O'Hare Intl Airport?
Air Canada, United Airlines and American 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 82% of people opting to fly with this airline when travelling 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?
As of June 2025, 12 flights take off from Ottawa and land in Chicago O'Hare Intl Airport each day. The most common flight departure time for this route is 6:00a.m., with 75% of daily flights taking off 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?
The straight-line distance from Ottawa to Chicago O'Hare Intl is 1051.1 km. In terms of flight time, this usually takes a little over 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 you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
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?
momondo data reveals that the most frequently booked airline on the route from Ottawa to Chicago O'Hare Intl Airport is Air Canada, representing 66% of all bookings. The subsequent popular airline is United Airlines at 34%.
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 C$ 532 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom C$ 543 | Free Cancellation | Rating 7.1 9,537 reviews |
United Airlines Flights From Ottawa to Chicago O'Hare Intl Airport
United Airlines operates around 21 flights from Ottawa to Chicago O'Hare Intl Airport every week. The average price of these flights found in the last 72 hours has been C$ 508, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 389 round-trip. United Airlines has been scored 7.4/10 in 8,790 reviews.
Air Canada Flights From Ottawa to Chicago O'Hare Intl Airport
Air Canada (7.1/10 from 9,531 reviews) operates around 21 flights from Ottawa to Chicago O'Hare Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 487, with deals from around C$ 397 rare but found on momondo. Referenced prices are for round-trip Ottawa to Chicago O'Hare Intl Airport flight searches in the last 72 hours.
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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 recognizable 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?
All flight searches from Ottawa to Chicago on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Ottawa to Chicago?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ottawa to Chicago.
I’m not ready to book a flight from Ottawa to Chicago right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Ottawa to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.