Cheap Flights from Denver to Sydney from $541

Frequently Asked Questions

• What are the cheapest flights from Denver to Sydney (DEN-SYD)?

  Based on Trip.com data, Delta Air Lines offers one-way fares as low as $541 on Cheapest nonstop routes (e.g. DEN to SYD on Wed, Mar 18), while Frontier Airlines offers Cheapest nonstop round-trips from $1,137 departing on Sat, Mar 14 and returning on Sat, Mar 21.

• Which airlines offer direct flights from Denver to Sydney?

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

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

  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 Sydney 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 can I find the best deals on flights from Denver to Sydney?

  To find best deals on flights from Denver to Sydney, 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 Wed, Mar 18, with one-way flights priced at just $541.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
  · 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 Sydney travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Denver (DEN) to Sydney (SYD) the cheapest?

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

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

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Denver to Sydney on March 11, 2026 with American Airlines, with prices starting at $580.

• Which airports can I fly to for Sydney from Denver?

  You can land at any one of the following hubs in Sydney, with Denver International Airport to Sydney Airport (DEN-SYD) is by far the most common option on this route: Sydney Airport (SYD).

• Is there any time difference between Denver and Sydney?

  The time difference between Sydney and Denver is 17h.

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

  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.