Cheap flights from Washington, D.C. Dulles Intl Airport to Phnom Penh from $532
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Phnom Penh departing on 7/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Phnom Penh
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Phnom Penh?
In general, October is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Phnom Penh. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,361. If you aren’t able to travel to Phnom Penh during the month of October, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,383.
What is the cheapest day to depart on your flight to Phnom Penh?
The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Phnom Penh is on a Saturday. Travelers who choose to depart for Phnom Penh on a Saturday will often find tickets for as low as $1,543. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Phnom Penh for around $1,705.
What is the cheapest time of day to depart on your flight to Phnom Penh?
According to our data, the cheapest time of day to fly to Phnom Penh is in the evening. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Phnom Penh in the evening for as low as $1,316. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Phnom Penh are more costly at noon, with an average ticket price of $1,825. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Phnom Penh?
You are more likely to see cheaper flights to Phnom Penh from Washington, D.C. Dulles Intl Airport when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to Phnom Penh for around $1,647 when searching 19 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phnom Penh from Washington, D.C. Dulles Intl Airport for as low as $1,335 on momondo.
What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Phnom Penh Pochentong?
Korean Air, China Airlines, and Etihad Airways are the most popular carriers operating from Washington, D.C. Dulles Intl to Phnom Penh Pochentong
What airlines fly to Phnom Penh?
Korean Air, Qatar Airways and Etihad Airways are the top three most popular airlines that fly to Phnom Penh from Washington, D.C. Dulles Intl Airport according to our data. Korean Air is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Phnom Penh. Keep in mind that there are 5 different airlines that fly to Phnom Penh on a routine basis, so you have a few additional options to choose from.
When to book flights from Washington, D.C. Dulles Intl Airport to Phnom Penh
Cheap Washington, D.C. Dulles Intl Airport to Phnom Penh (IAD to PNH) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Phnom Penh
How far is Washington, D.C. Dulles Intl to Phnom Penh Pochentong by plane?
There are 8937.3 mi between Washington, D.C. Dulles Intl and Phnom Penh Pochentong. In terms of flight time, this usually takes a little over 21h 00m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Phnom Penh Pochentong Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to Phnom Penh Pochentong Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Phnom Penh Pochentong Airport?
As of June 2025, there are 5 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Phnom Penh Pochentong Airport.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Phnom Penh Pochentong Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Phnom Penh Pochentong Airport.
What documentation or ID do you need to fly to Phnom Penh Pochentong Airport?
The travel and health documents required for your trip to Phnom Penh Pochentong Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Phnom Penh Pochentong Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Phnom Penh?
Based on momondo bookings for flights between Washington, D.C. Dulles Intl Airport and Phnom Penh, the leading airline is Korean Air, making up 66% of the total bookings. Other popular airlines include Qatar Airways with 16%, Etihad Airways with 10%, and Malaysia Airlines with 5%.
Best airlines flying from Washington, D.C. Dulles Intl Airport to Phnom Penh
Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Phnom Penh with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,048 | Free Cancellation | Rating 7.4 1,212 reviews | |||
| PriceFrom $1,299 | Free Cancellation | Rating 7.4 3,585 reviews | |||
| PriceFrom $1,304 | Free Cancellation | Rating 8.4 1,090 reviews | |||
| PriceFrom $1,311 | Free Cancellation | Rating 8.1 1,308 reviews | |||
| PriceFrom $1,334 | Free Cancellation | Rating 7.4 263 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Phnom Penh?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Phnom Penh from Washington, D.C..
Can I find flights from Washington, D.C. to Phnom Penh with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Washington, D.C. to Phnom Penh flights to just show those with flexible booking policies.
How can momondo help me find flights from Washington, D.C. to Phnom Penh?
Once you have performed a search for Washington, D.C. to Phnom Penh flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Washington, D.C. to Phnom Penh right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Washington, D.C. to Phnom Penh flights. All you need is a valid email address and we will do the rest; it is that quick and easy.