Cheap Flights from Denver to Toronto from $138

Frequently Asked Questions

• What are the cheapest flights from Denver to Toronto (DEN-YTO)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as $138 on Cheapest nonstop routes (e.g. DEN to YYZ on Tue, Sep 15), while Frontier Airlines offers Cheapest nonstop round-trips from $330 departing on Tue, Sep 29 and returning on Sun, Oct 4.

• Which airlines offer direct flights from Denver to Toronto?

  At the moment, you can catch a nonstop flight from Denver to Toronto with the following airlines, including: United Airlines Air Canada Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Denver (DEN) to Toronto (YTO) and what is the distance?

  It takes around 3 hours 11 minutes to fly from Denver (DEN) to Toronto (YTO).

• When is the best time to book flights from Denver to Toronto?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Denver to Toronto is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Denver to Toronto?

  Based on Trip.com data in the past 4 weeks, there is 25 flight per week flying from Denver to Toronto. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA1874 (10:16) Air Canada: S/M/T/W/T/F/S -- AC4883 (10:16) Air Canada: S/M/T/W/T/F/S -- AC4889 (16:18)

• How can I find the best deals on flights from Denver to Toronto?

  To find best deals on flights from Denver to Toronto, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Sep 15, with one-way flights priced at just $138.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Canada.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Toronto travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Denver (DEN) to Toronto (YTO) the cheapest?

  The cheapest months to fly from Denver to Toronto is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Denver to Toronto on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Denver to Toronto on September 25, 2026 with WestJet, with prices starting at $290.

• Which airports can I fly into Toronto from Denver?

  You can arrive at any of the following airports in Toronto: Toronto Pearson International Airport (YYZ), Billy Bishop Toronto City Airport (YTZ), John C. Munro Hamilton International Airport (YHM), and Region of Waterloo International Airport (YKF). Flights from Denver International Airport to Toronto Pearson International Airport (DEN-YYZ) are by far the most popular option for this route.

• Is there any time difference between Denver and Toronto?

  The time difference between Toronto and Denver is 2h.

• How do I change or cancel my ticket from Denver to Toronto?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Denver to Toronto?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Denver to Toronto is $339. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Denver to Toronto?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Denver to Toronto is $623. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Denver to Toronto on Trip.com?

  Enter Denver and Toronto, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Denver to Toronto route?

  Frontier Airlinesare the most popular budget airlines flying from Denver to Toronto. Check baggage, seat and payment fees before comparing the final price.