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Cheap Flights from Chicago to Ottawa

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      Compare Chicago to Ottawa flight deals

      Find the cheapest month or even day of the year to fly to Ottawa

      Book the best Ottawa fare with no extra fees

      Flight deals from Chicago to Ottawa

      Looking for a cheap last-minute deal or the best return flight from Chicago to Ottawa? If you want to travel next month, return fares start from £247. Find the lowest prices on one-way and return tickets right here.
      Ottawa.£103 per passenger.Departing Sun, 25 Oct.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Chicago Rockford on Sun, 25 Oct, arriving in Ottawa International.Price includes taxes and charges.From £103, select.
      Ottawa.£106 per passenger.Departing Sun, 6 Sep.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Chicago Rockford on Sun, 6 Sep, arriving in Ottawa International.Price includes taxes and charges.From £106, select.
      Ottawa.£130 per passenger.Departing Thu, 5 Nov.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Thu, 5 Nov, arriving in Ottawa International.Price includes taxes and charges.From £130, select.
      Ottawa.£134 per passenger.Departing Wed, 2 Dec.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Wed, 2 Dec, arriving in Ottawa International.Price includes taxes and charges.From £134, select.
      Ottawa.£160 per passenger.Departing Wed, 24 Feb.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Wed, 24 Feb, arriving in Ottawa International.Price includes taxes and charges.From £160, select.
      Ottawa.£163 per passenger.Departing Thu, 7 Jan.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Thu, 7 Jan, arriving in Ottawa International.Price includes taxes and charges.From £163, select.
      Ottawa.£195 per passenger.Departing Sat, 17 Apr.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Sat, 17 Apr, arriving in Ottawa International.Price includes taxes and charges.From £195, select.
      Ottawa.£212 per passenger.Departing Thu, 29 Jul.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Thu, 29 Jul, arriving in Ottawa International.Price includes taxes and charges.From £212, select.
      Ottawa.£212 per passenger.Departing Fri, 14 May.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Fri, 14 May, arriving in Ottawa International.Price includes taxes and charges.From £212, select.
      Ottawa.£212 per passenger.Departing Fri, 12 Mar.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Fri, 12 Mar, arriving in Ottawa International.Price includes taxes and charges.From £212, select.
      Ottawa.£287 per passenger.Departing Sat, 29 Aug.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago Midway on Sat, 29 Aug, arriving in Ottawa International.Price includes taxes and charges.From £287, select.
      Ottawa.£292 per passenger.Departing Mon, 1 Feb.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Chicago O'Hare International on Mon, 1 Feb, arriving in Ottawa International.Price includes taxes and charges.From £292, select.
      Ottawa.£293 per passenger.Departing Sun, 20 Jun.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Chicago O'Hare International on Sun, 20 Jun, arriving in Ottawa International.Price includes taxes and charges.From £293, select.
      Ottawa.£295 per passenger.Departing Wed, 7 Oct.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Chicago O'Hare International on Wed, 7 Oct, arriving in Ottawa International.Price includes taxes and charges.From £295, select.
      Ottawa.£295 per passenger.Departing Tue, 24 Nov.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Chicago O'Hare International on Tue, 24 Nov, arriving in Ottawa International.Price includes taxes and charges.From £295, select.
      Ottawa.£295 per passenger.Departing Tue, 29 Sep.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Chicago O'Hare International on Tue, 29 Sep, arriving in Ottawa International.Price includes taxes and charges.From £295, select.

      Find the cheapest month to fly from Chicago to Ottawa

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Ottawa flights are currently cheapest in October.
      Aug
      from £287
      Sep
      from £106
      Oct
      from £103
      Nov
      from £130
      Dec
      from £134
      Jan
      from £163
      Feb
      from £160
      Mar
      from £212
      Apr
      from £195
      May
      from £212
      Jun
      from £293
      Jul
      from £212

      Direct flights from Chicago to Ottawa

      Air Canada
      Air New Zealand
      ANA (All Nippon Airways)
      Avianca
      Emirates
      United

      Alternative Chicago to Ottawa routes

      Looking for the cheapest, fastest or easiest route from Chicago to Ottawa? You could fly into the following airports instead.

      Ottawa International

      11km from central Ottawa
      ClosestCheapest
      from £103
      Search flights

      Ottawa Gatineau

      15km from central Ottawa
      Search flights

      Chicago to Ottawa: Flight information

      The things to know before you go.
      Cheapest flight found£103
      Cheapest month to flyOctober
      Most popular airlineUnited
      Average flights per week74

      Finding cheap flights from Chicago to Ottawa: Frequently asked questions

      There are 2 airports in Ottawa: Ottawa International and Ottawa Gatineau.
      The best price we found for a return flight from Chicago to Ottawa is £247. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      2 hours and 19 minutes is the average flight time from Chicago to Ottawa.
      United, Air New Zealand and Air Canada fly direct from Chicago to Ottawa.
      As of August 2026, there are 666 flights per week flying from Chicago to Ottawa.
      The cheapest month to fly from Chicago to Ottawa is usually September.
      If you're flying from Chicago, the cheapest airport near Ottawa is Ottawa International – which is 11.2 km away from the centre of Ottawa. We've found flights into this airport from £247.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Ottawa on Thursday, 24 September 2026.
      Yes – the average flight time is 2 hours and 19 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ottawa but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ottawa is around 40 days in advance, so don’t leave your flight to the last minute.

      In August, the average temperature is usually around 19°C. July is typically the warmest month in Ottawa, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -16°C. The rainiest month is June.
      The cheapest airline that flies to Ottawa is Frontier Airlines. And the cheapest airline that flies to Ottawa Gatineau Airport is Air Canada.

      How to find cheap flights to Ottawa from Chicago

      Looking for cheap tickets from Chicago to Ottawa? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

      • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Chicago to Ottawa. And with us there are no hidden fees - what you see is what you pay.
      • Compare flight deals to Ottawa from Chicago from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
      • Flex your dates to find the best Chicago-Ottawa ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Ottawa from Chicago.
      • Set up a Price Alert. You can easily track the fare of your cheap Chicago-Ottawa flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
      • Fly without stops. Only interested in direct flights between Chicago and Ottawa? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
      • Find the cheapest Business class flights from Chicago and Ottawa. We scour the internet for the best Business, Premium Economy and First Class flight fares to Ottawa, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
      • Include nearby airports in your search. Widen your search for Chicago to Ottawa flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

        • Combine your flight to Ottawa from Chicago with hotels and car hire

        Once you've secured your cheap flight ticket from Chicago to Ottawa, discover the best prices and exclusive rates for hotels in Ottawa or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


      Plan the rest of your trip from Chicago to Ottawa

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.