WAS - KTI

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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Phnom Penh. You'll need to take a connecting flight to reach the destination.
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Top routes
DCA - KTI
Cheapest • 6% average savings
IAD - KTI
Most popular
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When to book
15 weeks
in advance
Our data shows that travelers who book at least 15 weeks in advance save around 32% compared to booking last minute.
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When to travel
January
Cheapest • 11% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Abu Dhabi Zayed Intl (AUH)
Cheapest • Avg $1,285 (round-trip)
Taipei City Taiwan Taoyuan Intl (TPE)
Shortest trip • 21h 43m (one-way)
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Cheap Flights from Washington, D.C. to Phnom Penh (WAS-KTI)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Phnom Penh

Multiple Airlines Logo
WAS  Washington, D.C. All airports-KTI Phnom Penh Techo Intl
8955 mimulti-stop
Multiple Airlines Logo
KTI  Phnom Penh Techo Intl-WAS Washington, D.C. All airports
8955 mimulti-stop
Multiple Airlines
Booking Insights

Price, demand and travel trends for Washington, D.C. to Phnom Penh flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. to Phnom Penh with more confidence.

What is the cheapest Washington, D.C. to Phnom Penh flight route?

Washington, D.C. Reagan-National Airport (DCA) to Phnom Penh (KTI) is the cheapest Washington, D.C. to Phnom Penh route, averaging $1,209 round-trip. Other Washington, D.C. to Phnom Penh routes average $1,355, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Washington, D.C. to Phnom Penh?

Tuesday is the cheapest day of the week to fly from Washington, D.C. to Phnom Penh, it is 11% cheaper than the average day. Monday is the most expensive day with flight prices 21% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Washington, D.C. to Phnom Penh?

  • January and March are the cheapest months to fly from Washington, D.C. to Phnom Penh at $1,195 round-trip.
  • June ($1,988) and July ($1,544) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 66% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Washington, D.C. to Phnom Penh the cheapest?

Flights from Washington, D.C. to Phnom Penh are cheapest 15 weeks before departure. Booking in this window typically costs about 32% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Washington, D.C. to Phnom Penh flights

Low season

May
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 11% increase in price.

When to book flights from Washington, D.C. to Phnom Penh

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. to Phnom Penh flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Washington, D.C. to Phnom Penh?

    Flights from Washington, D.C. to Phnom Penh may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Phnom Penh Techo Intl (KTI).

  • What cabin classes can I book on flights from Washington, D.C. to Phnom Penh?

    Three cabin classes are available on flights from Washington, D.C. to Phnom Penh:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Washington, D.C. to Phnom Penh pass through?

    One-stop flights from Washington, D.C. to Phnom Penh most commonly connect through:

    • Incheon Intl (ICN) - 54% of one-stop connections
    • Taipei City Taiwan Taoyuan Intl (TPE) - 25% of one-stop connections
    • Abu Dhabi Zayed Intl (AUH) - 21% of one-stop connections

    Incheon Intl (ICN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. to Phnom Penh?

    Yes. Being flexible with your travel dates can save you up to 27% on the Washington, D.C. to Phnom Penh route. Tuesday is the cheapest departure day at $1,202 round-trip on average, while Monday is the most expensive at $1,631, a difference of $429. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How expensive are last-minute Washington, D.C. to Phnom Penh flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 24% above the route average of $1,347. Book 15 weeks before departure for the lowest fares.

  • How long is a flight from Washington, D.C. to Phnom Penh?

    A nonstop flight from Washington, D.C. to Phnom Penh takes 0h 00m, covering 8,955 miles.

  • Do I need a passport to fly from Washington, D.C. to Phnom Penh?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much time can I save by choosing a different layover airport from Washington, D.C. to Phnom Penh?

    Flying via Taipei City Taiwan Taoyuan Intl (TPE) gives the shortest average 1-stop total travel time at 21h 43m, compared with 22h 19m via Incheon Intl (ICN) and 31h 00m via Abu Dhabi Zayed Intl (AUH).

  • What is the time difference between Washington, D.C. and Phnom Penh?

    Phnom Penh is 11 hours ahead of Washington, D.C. (Indochina Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • How much should I expect to pay for a Washington, D.C. to Phnom Penh flight?

    Round-trip flights from Washington, D.C. to Phnom Penh range from $1,164 to $1,649, with an average of $1,347 over the past 12 months. Anything below $1,164 counts as a good deal.

Your guide to booking Washington, D.C. to Phnom Penh flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Monday. On this route, Tuesday flights average $1,202 - about $429 less than Monday (26% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 15 weeks before you fly. On this route, that window historically saves about 32% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. to Phnom Penh trip for January. Fares historically average $1,195 round-trip in that month - typically $793 less than the most expensive month, which is June (based on the last 12 months).

Everything you need to know for your flight from Washington, D.C. to Phnom Penh

Information on your arrival and departure airports

Phnom Penh (KTI)