Cheap flights from Washington to Siem Reap from $720

When did momondo last update prices for flights from Washington to Siem Reap–Angkor Intl Airport?

Prices for flights from Washington to Siem Reap–Angkor Intl Airport refresh daily.

How many operators does momondo search for flights from Washington to Siem Reap–Angkor Intl Airport?

As of April 2026, there is 1 operator available to choose from for flights from Washington to Siem Reap–Angkor Intl Airport.

How old do you have to be to fly from Washington to Siem Reap–Angkor Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Siem Reap–Angkor Intl Airport.

What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

The required travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.