Ottawa, Canada to Denver, CO flights
Flights starting at CA$158. Choose between Frontier Airlines, Porter Airlines, or Air Canada to find the best price.
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Tips to know when travelling to Denver
Cheapest one-way trip | CA$210 |
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Cheapest round-trip | CA$272 |
Average round-trip | CA$438 |
Includes rare itinerary | Travel hack |
Most popular airline | Frontier Airlines |
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Check-in for a flight from Ottawa to Denver
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
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Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Porter Airlines | POE | PD | Yes | 0 0 |
Air Canada | ACA | AC | Yes | No |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Flair Airlines | FLE | F8 | Yes | Opens 24 days before flight Closes 1 hours before flight |
United States COVID-19 travel restrictions

Most travellers from Ottawa, YOW can enter Denver, DEN, but there are restrictions.
Departure
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Visa requirements |
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Return
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
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The nearest countries with flights to Denver
Here is a list of countries people are flying fromOther destination countries from Ottawa
Here is a list of countries people are flying toAirports near Ottawa
- Montréal–Pierre Elliott Trudeau International
- Ottawa Macdonald–Cartier International
- Syracuse Hancock International
- Plattsburgh International
- Burlington International
- Ogdensburg International
- Massena International
- Adirondack Regional
- Watertown International
- Montreal Saint-Hubert Longueuil