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346 € Cheap Flights from Denver to Ottawa

Compare Denver to Ottawa flight deals

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

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Flight deals from Denver to Ottawa

Looking for a cheap last-minute deal or the best return flight from Denver to Ottawa? If you want to travel next month, return fares start from 346 €. Find the lowest prices on one-way and return tickets right here.
Ottawa.346 € per passenger.Departing Thu, 16 Apr, returning Tue, 21 Apr.Return flight with Frontier Airlines and WestJet.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 16 Apr, arriving in Ottawa International.Inbound indirect flight with WestJet, departs from Ottawa International on Tue, 21 Apr, arriving in Denver International.Price includes taxes and charges.From 346 €, select.
Ottawa.364 € per passenger.Departing Fri, 1 May, returning Thu, 7 May.Return flight with Frontier Airlines and WestJet.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 1 May, arriving in Ottawa International.Inbound indirect flight with WestJet, departs from Ottawa International on Thu, 7 May, arriving in Denver International.Price includes taxes and charges.From 364 €, select.
Ottawa.369 € per passenger.Departing Sat, 25 Apr, returning Sat, 2 May.Return flight with Frontier Airlines and WestJet.Outbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 25 Apr, arriving in Ottawa International.Inbound indirect flight with WestJet, departs from Ottawa International on Sat, 2 May, arriving in Denver International.Price includes taxes and charges.From 369 €, select.
Ottawa.385 € per passenger.Departing Thu, 26 Mar, returning Mon, 30 Mar.Return flight with Frontier Airlines and Porter Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 26 Mar, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Mon, 30 Mar, arriving in Denver International.Price includes taxes and charges.From 385 €, select.
Ottawa.392 € per passenger.Departing Thu, 26 Mar, returning Sun, 5 Apr.Return flight with Frontier Airlines and Porter Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 26 Mar, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Sun, 5 Apr, arriving in Denver International.Price includes taxes and charges.From 392 €, select.
Ottawa.536 € per passenger.Departing Fri, 12 Jun, returning Mon, 15 Jun.Return flight with jetBlue and Porter Airlines.Outbound indirect flight with jetBlue, departs from Denver International on Fri, 12 Jun, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Mon, 15 Jun, arriving in Denver International.Price includes taxes and charges.From 536 €, select.
Ottawa.542 € per passenger.Departing Thu, 6 Aug, returning Tue, 11 Aug.Return flight with Frontier Airlines and Porter Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 6 Aug, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Tue, 11 Aug, arriving in Denver International.Price includes taxes and charges.From 542 €, select.
Ottawa.630 € per passenger.Departing Sat, 4 Jul, returning Tue, 7 Jul.Return flight with United.Outbound indirect flight with United, departs from Denver International on Sat, 4 Jul, arriving in Ottawa International.Inbound indirect flight with United, departs from Ottawa International on Tue, 7 Jul, arriving in Denver International.Price includes taxes and charges.From 630 €, select.

Find the cheapest month to fly from Denver to Ottawa

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Ottawa flights are currently cheapest in April.
Mar
from 385 €
Apr
from 346 €
May
from 364 €
Jun
from 536 €
Jul
from 630 €
Aug
from 542 €
Sep
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Oct
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Nov
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Dec
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Jan
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Feb
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Alternative Denver to Ottawa routes

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

Ottawa International

11km from central Ottawa
ClosestCheapest
from 346 €
Search flights

Ottawa Gatineau

15km from central Ottawa
Search flights

Denver to Ottawa: Flight information

The things to know before you go.
Cheapest flight found346 €
Cheapest month to flyApril

Finding cheap flights from Denver 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 Denver to Ottawa is 346 €. 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 Denver to Ottawa. But we found flights with one or more stops from 346 €.
As of March 2026, there are no flights flying from Denver to Ottawa.
The cheapest month to fly from Denver to Ottawa is usually April.
If you're flying from Denver, 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 346 €.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Ottawa on Thursday, 16 April 2026.
No airlines currently offer direct flights between Denver and Ottawa. 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 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 March, the average temperature is usually around -3°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 .

Flying from Denver to Ottawa: what you need to know

  • Denver International Airport (DEN) is Denver's main airport. Check out your options for booking a flight from Denver to Ottawa jetting off from here.

  • Hop off the plane at Ottawa's primary gateway, Ottawa/Macdonald-Cartier International Airport (YOW).

  • Ottawa is two hours ahead of Denver and is in the UTC-4 timezone.

  • To ensure you make it on your Denver to Ottawa flight, leave plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule to follow.

  • During popular months such as July, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of international flights whenever you're flying during a peak period in general.

How to find the cheapest flights from Denver to Ottawa

  • Don't leave everything to the last moment. You're more likely to get cheap Denver to Ottawa flights if you book ahead. Airlines often have some great early bird discounts.

  • The 'Whole month' tool shows you the cheapest plane tickets from Denver to Ottawa throughout the entire month. It's an easy way to snap up a bargain if your travel dates are flexible.

  • Snapping up a cheap flight from Denver to Ottawa is a breeze with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when the price has dropped.

  • Save money on your Denver to Ottawa flight with the help of our filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from Denver

Denver International Airport (DEN)

  • A stopover is the perfect opportunity to take a travel break — and perhaps even tour another city. When browsing Denver to Ottawa flights leaving from Denver International Airport, deselect the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:

    • Pearson International Airport (YYZ)

    • Washington Dulles International Airport (IAD)

    • Montreal-Pierre Elliott Trudeau International Airport (YUL)

  • Located around 31 kilometres from the centre of Denver, DEN can be reached in about 35 minutes by car (depending on traffic). The journey on public transport is roughly 1 hour 30 minutes.

  • Booking a night at a hotel can take the stress out of getting to the airport on time. If you need a place to stay before your flight from Denver to Ottawa, check out Baymont by Wyndham Denver International Airport. It's an easy drive from Denver International Airport.

  • Denver International Airport maintains a strong on-time performance, making delays less likely. Departures from DEN land on schedule 80.23% of the time.

  • You'll find DEN at 8500 Pena Boulevard.

Arriving in Ottawa

Ottawa Gatineau Airport (YND)

  • Ottawa Gatineau Airport (YND) is approximately 14 kilometres from the centre of Ottawa. If you're catching a cab or a ride-share, the drive will take around 20 minutes.

  • If you're using public transport, expect a journey time of about 1 hour 40 minutes.

  • Reserve a hotel close to YND if you have a late flight from Denver to Ottawa. Choose one of these options and skip the long transfer:

  • Drive into your next adventure with an Ottawa Gatineau Airport rental car. Book your wheels from Hertz to explore beyond Ottawa's usual tourist stops.

  • Book your vehicle from Ottawa Gatineau Airport several weeks ahead to lock in the best possible deal. If you're going away during a busy period, you may want to book your Denver to Ottawa flight even earlier.

Ottawa/Macdonald-Cartier International Airport (YOW)

  • Ottawa/Macdonald-Cartier International Airport (YOW) is around 11 kilometres from the centre of Ottawa. Once you've hopped off your flight from Denver to Ottawa, it takes approximately 20 minutes to get to the heart of the city in a cab or ride-share.

  • If you're travelling on public transport, it'll take around 45 minutes.

  • Routes Car Rentals, Alamo and Budget make picking up an Ottawa/Macdonald-Cartier International Airport rental car simple. These trusted providers are located in or around the terminal and will have you on your way in a heartbeat.

  • Get first dibs on the best options. Booking your ride from YOW two weeks in advance often means better deals and a wider selection of vehicles.

  • You can find Ottawa/Macdonald-Cartier International Airport at 50 Airport Road.

Best time to go to Ottawa

  • Have a think about your trip dates before securing your flight from Denver to Denver. The city comes alive in high season, but hotel prices are generally higher and major attractions can get busy. Visit Denver in low season if you want a quieter vibe.

  • Book a Denver to Ottawa ticket departing in July if you're eager to visit the city during its warmest month. You can expect temperatures in Ottawa to range from 13ºC (55ºF) to 27ºC (81ºF).

  • Look for cheap flights from Denver to Ottawa in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -19ºC (-2ºF) and -2ºC (28ºF) on average.

More about Ottawa

  • After booking your flight from Denver to Ottawa, choose a hotel that puts you where you want to be. Make one of these options your base for exploring Ottawa:

  • There are so many things to explore in this city it can be difficult to know where to start. Parliament Hill, Rideau Canal and National Gallery of Canada are highlights which should feature on any well-planned Ottawa itinerary.

Explore more of Canada

  • Ottawa has its own special appeal, but there are so many other corners of Canada waiting to be discovered. Around 354 kilometres south-west of Ottawa, a visit to Toronto will fill your itinerary to the brim. Start with leading attractions like CN Tower, Royal Ontario Museum and Go Tours Canada - Distillery District.

  • Montreal is another must-experience destination in Canada and is around 153 kilometres east of Ottawa. No trip is complete without dropping by Mount Royal Park, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal.

Plan the rest of your trip from Denver to Ottawa

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