Cheap Flights from Ottawa to Denver International

Compare Ottawa to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

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Flight deals from Ottawa to Denver International Airport

Looking for a cheap last-minute deal or the best return flight from Ottawa to Denver International Airport? If you want to travel next month, return fares start from R 7,073. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Ottawa to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ottawa to Denver International flights are currently cheapest in April.

Ottawa to Denver International: Alternative routes

Compare routes from Ottawa to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Ottawa to Denver: Flight information

The things to know before you go.
Cheapest flight foundR 3,608
Cheapest month to flyApril

Finding cheap flights from Ottawa to Denver International: Frequently asked questions

The best price we found for a return flight from Ottawa to Denver International is R 6,763. 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.
Currently, there are no airlines that fly direct from Ottawa to Denver International. But we found flights with one stop from R 6,763.
As of March 2026, there are no flights flying from Ottawa to Denver International.
The cheapest month to fly from Ottawa to Denver International is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to Denver International Airport on Sunday, 3 May 2026.
No airlines currently offer direct flights between Ottawa and Denver International Airport. Most routes have one or more stops.
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 Denver International 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 Denver is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Denver International is WestJet .

Flying from Ottawa to Denver International Airport (DEN): What you need to know

  • Denver is two hours behind Ottawa. Denver International Airport is located in Denver, which is in the UTC-7 timezone.

  • Get to the airport on time so you don't miss your flight from Ottawa to DEN. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • Popular months like August or other busy periods mean longer queues and potential delays. Get a head start by getting to the airport even earlier. Aim for at least four hours ahead of international flights and two hours before a domestic departure.

Airports in Ottawa

Ottawa Macdonald-Cartier International Airport (YOW)

  • YOW is about 14 kilometres from central Ottawa. If you're ride-sharing, driving or catching a taxi from the centre, it'll take 20 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the trip time to be around 35 minutes.

  • Catching an early flight from Ottawa to Denver International Airport? Avoid rushing to the terminal (and get some bonus sleep) by picking one of these hotels near Ottawa Macdonald-Cartier International Airport:

  • Of all flights leaving Ottawa Macdonald-Cartier International Airport, 58% touch down on time at their destination.

  • You'll find YOW at 50 Airport Road.

About Denver International Airport (DEN)

  • Hop off your flight from Ottawa to Denver International Airport and be in your hotel bed shortly after. If you're looking for a convenient option that's not too far from DEN, unpack your bags at Baymont by Wyndham Denver International Airport.

  • Go where the road takes you with a Denver International Airport rental car. Book your wheels from Routes Car Rentals, Dollar or Budget and see more of Denver and beyond.

  • Booking your vehicle around one week ahead of your Ottawa to Denver International Airport flight can help you get the lowest rate.

  • You'll find DEN at 8500 Pena Boulevard.

Getting from Denver International Airport (DEN) to central Denver

  • Denver International Airport is around 40 kilometres from the centre of Denver. It takes around 35 minutes or so to get to the city by car.

  • Travelling by public transport will take you roughly 35 minutes.

How to find the cheapest flights from Ottawa to Denver International Airport (DEN)

  • Right now, R 3,608 is the best price we've found for a one-way ticket from Ottawa to Denver International Airport. The cheapest price for a return flight is R 6,763. Keep in mind fares can change due to demand at the time of booking.

  • To pick up cheap flights from Ottawa to DEN, book in advance. Airlines generally offer lower fares when flights first go on sale.

  • If you're flexible with your travel plans, try using the 'Whole month' tool. It'll give you the lowest price across every month when searching for your Ottawa to Denver International Airport ticket.

  • You don't need to search every day to find out if prices have dropped when you set up a Price Alert. We'll let you know the moment a better deal is available on plane tickets from Ottawa to DEN.

  • Hunt down a great price on a flight from Ottawa to Denver International Airport with the help of the filters. Choose your ideal departure and arrival times, airlines and number of stops. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best.'

The best time to fly from Ottawa to Denver International Airport (DEN)

  • October is the most popular month for flights from Ottawa to Denver International Airport (DEN). Plan your visit to Denver in September if you prefer a quieter experience.

  • The warmest month in Denver is July, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Book your Ottawa to DEN plane ticket then if you enjoy this type of weather.

  • January has temperatures of between -9ºC (16ºF) and 7ºC (45ºF). Look for cheap tickets from Ottawa to Denver International Airport around that time if you want to travel when it's cooler.

More about Denver

Explore more of the United States

  • Denver is easy to fall in love with, but there are so many other corners of the United States just waiting to be discovered. Around 113 kilometres south of Denver, a trip to Colorado Springs will fill your itinerary to the brim. Check out popular attractions like Garden of the Gods, Pikes Peak Region Attractions and Red Rock Canyon.

  • Pueblo is another must-experience destination in the United States and is around 177 kilometres south of Denver. No journey is complete without experiencing Rosemount Museum, Cathedral of the Sacred Heart and Minnequa Lake Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.