Denver to Ontario

1 ways to travelfastest 2h 22mfly from €137
Photo: Berkay Gumustekin / Unsplash

Departure-day prices · October 2026 Denver → Ontario

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Return-day prices · October 2026 Ontario → Denver

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Best time to visit Ontario — climate

Jan: ~19°C daytime, 2 rainy days 19° JanFeb: ~20°C daytime, 6 rainy days 20° FebMar: ~19°C daytime, 10 rainy days 19° MarApr: ~23°C daytime, 4 rainy days 23° AprMay: ~28°C daytime, 2 rainy days 28° MayJun: ~31°C daytime, 1 rainy days 31° JunJul: ~32°C daytime, 0 rainy days 32° JulAug: ~35°C daytime, 0 rainy days 35° AugSep: ~32°C daytime, 1 rainy days 32° SepOct: ~26°C daytime, 4 rainy days 26° OctNov: ~22°C daytime, 7 rainy days 22° NovDec: ~21°C daytime, 5 rainy days 21° Dec

Best value: Aug — fares from €28 and ~35°C daytime.

Flights from Denver to Ontario start around €137 (direct flights available). Range seen recently: €137–137, based on 1 fares found by travellers.

Fly (from €137)
2h 22mduration
€137–137recent fares
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Cheapest cached fares Denver → Ontario; direct flights available (e.g. UA). · Based on 1 fares found by travellers in the last 48h

Weather in Ontario

Mon ☀️ 37° 20° 💧0%
Tue ☁️ 35° 18° 💧0%
Wed ☀️ 36° 19° 💧0%
Thu ☁️ 36° 24° 💧0%
Fri ☁️ 37° 25° 💧0%
Sat ☁️ 39° 27° 💧1%
Sun ☀️ 37° 28° 💧1%

In Oct, Ontario typically sees ~26°C daytime highs and 4 rainy days.

Where to stay in Ontario

3★+ hotels from €66/night (25 hotels sampled, ~3 weeks out).

Days Inn by Wyndham Ontario Airport hotel · Ontario
from €66/night★ 3
Ontario Airport Inn hotel · Ontario
from €73/night★ 3
Comfort Inn & Suites Near Ontario Airport hotel · Ontario
from €77/night★ 3

Good to know

Time difference-1h

Things to do in Ontario

Top-rated tours and tickets from €40 — book ahead for the popular ones.

Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.

About Ontario

Ontario is Canada's second-largest province, and the most populous, with more than 14 million inhabitants. It is home to the Canadian capital city of Ottawa, and Toronto, which is Ontario's capital and Canada's largest city. Stretching from the shores of Hudson Bay (an arm of the Arctic Ocean) in the north to four of the five Great Lakes in the South and from Manitoba in the west to Quebec in the east, Ontario is truly massive at over a million square kilometres (almost half a million square miles).

Read the full Ontario guide

Guide content from Wikivoyage contributors (CC BY-SA).

Round out the trip

Popular from Denver

Cheapest destinations travellers searched recently — refreshed daily.

Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-07-27. Some links earn Stayonomy a commission at no cost to you.