August is the cheapest month to fly this route, with average fares around $427 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $550 | $433 | Peak | |
| June 2026 | $472 | $354 | ||
| July 2026 | $472 | $423 | ||
| August 2026 | $427 | $427 | Best |
Departing on Tuesday offers the lowest average fares at $435. Sunday departures are the most expensive at $510, a difference of $75.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Denver to Toronto is August, with average round-trip fares around $427.
Tuesday departures are the cheapest, averaging $435 round trip. The most expensive day is Sunday at $510.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $550 compared to $427 in the cheapest month. July is a solid middle-ground option at $472.
Flying in August instead of May can save you approximately $123 per round trip. The cheapest month averages $427 while the most expensive averages $550.
Airlines, flight times, price calendar, and more for Denver to Toronto
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