Cheap Flights from Denver International to Siem Reap–Angkor

Compare Denver International to Siem Reap–Angkor flight deals

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Flight deals from Denver International to Siem Reap–Angkor

Looking for a cheap last-minute deal or the best return flight from Denver International to Siem Reap–Angkor ? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver International to Siem Reap–Angkor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to Siem Reap–Angkor flights are currently cheapest in October.

Denver International to Siem Reap–Angkor : Alternative routes

Compare routes from Denver International to Siem Reap below. You may find an airport to fly into that's cheaper, faster, or easier than Siem Reap–Angkor .

Denver to Siem Reap: Flight information

The things to know before you go.
Cheapest flight foundR 10,119
Cheapest month to flyOctober

Finding cheap flights from Denver International to Siem Reap–Angkor : Frequently asked questions

The best price we found for a return flight from Denver International to Siem Reap–Angkor is R 18,777. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Denver International to Siem Reap–Angkor . But we found flights with one or more stops from R 18,777.
As of July 2026, there are no flights flying from Denver International to Siem Reap–Angkor .
The cheapest month to fly from Denver International to Siem Reap–Angkor is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to Siem Reap–Angkor Airport on Thursday, 1 October 2026.
No airlines currently offer direct flights between Denver International Airport and Siem Reap–Angkor Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Siem Reap–Angkor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Siem Reap is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines offers the cheapest flight tickets to Siem Reap–Angkor .

Flying from Denver International Airport (DEN) to Siem Reap–Angkor Airport (SAI): what you need to know

  • Siem Reap is 14 hours ahead of Denver and follows the UTC+7 timezone.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to catch your DEN to SAI flight.

  • During popular months like July, you'll want to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for international flights whenever you're flying during a high season in general.

How to find the cheapest flights from Denver International Airport (DEN) to Siem Reap–Angkor Airport (SAI)

  • The lowest price we've found for a one-way Denver International Airport to Siem Reap–Angkor Airport flight is R 10,120. A round-trip ticket right now is R 18,777. Depending on the availability when you book, these fares can change.

  • It's often best to book in advance if you're hoping to get cheap tickets from DEN to SAI. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • Getting cheap flights from Denver International Airport to Siem Reap–Angkor Airport is more likely if you can be flexible with your dates. Use the 'Whole month' tool to see the best prices across each month and land a great deal.

  • There's no need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll update you the moment there's a change in price on cheap flights from DEN to SAI.

  • Tailor your trip with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Denver International Airport to Siem Reap–Angkor Airport.

Handy information about Denver International Airport (DEN)

  • The address for DEN is 8500 Pena Boulevard.

  • Denver International Airport has an excellent on-time performance, so you're less likely to experience disruptions. Departures from DEN land on schedule 80% of the time.

  • To get to Denver International Airport from central Denver, it takes around 35 minutes if you're planning to drive. Of course, this depends on traffic. It's approximately 40 kilometres from the airport to the city centre.

  • The trip on public transport takes roughly 35 minutes.

  • Spending the night in a hotel can take the hassle out of getting to the airport on time. If you want a place to stay before your flight from Denver International Airport to Siem Reap–Angkor Airport, check out Baymont by Wyndham Denver International Airport. It's a short ride from DEN.

Getting from Siem Reap–Angkor Airport (SAI) to central Siem Reap

  • Siem Reap–Angkor Airport is roughly 8 kilometres from central Siem Reap. Driving there takes about 15 minutes.

  • When travelling on public transport, expect a journey time of about 25 minutes.

When to fly to Siem Reap–Angkor Airport (SAI)

  • The quietest month for a flight from Denver International Airport to Siem Reap–Angkor Airport is June, while December is the busiest. Pick the ideal time to go to Siem Reap based on whether you prefer a faster pace or a more relaxed vibe.

  • Book your flight from Denver International Airport to Siem Reap–Angkor Airport for March if you'd like to visit Siem Reap during its warmest month. Expect temperatures of between 22ºC (72ºF) and 38ºC (100ºF).

  • If you want to travel in cooler conditions, search for a cheap ticket from DEN to SAI in January. Average temperatures are between 18ºC (64ºF) and 33ºC (91ºF) then.

Explore more of Cambodia

  • Phnom Penh is just one of the many places in Cambodia waiting to be discovered after you've seen Siem Reap. Around 225 kilometres away to the south-east, well-known attractions include Royal Palace, Genocide museum and Documentation Centre of Cambodia.

  • If you're eager to discover another great destination in Cambodia, consider Sihanoukville, roughly 306 kilometres south of Siem Reap. Otres Beach, Independence Beach and Sokha Beach are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.