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Flights from Washington D.C. to Phnom Penh

Flight Info | Washington D.C. to Phnom Penh

The distance between Washington D.C. and Phnom Penh is approximately 14,404.14 km. Based on Trip.com's data, travel demand peaks in December.

Cheapest one-way
$711
Etihad Airways Etihad Airways WAS-KTI 40h 35m · 1 stop Tue, Sep 1
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Cheapest round-trip
$1,329
Etihad Airways Etihad Airways WAS-KTI 28h 35m · 2 stops Sat, Sep 5 - Sat, Sep 12
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Recommended airlines
Etihad Airways Etihad Airways Cheapest · From $711 Korean Air Korean Air Most booked
When to travel
September
Cheapest
December
Peak season for travel
Route details
14,404.14 km
Flight distance

Find flight deals from Washington D.C. to Phnom Penh for the next 3 months. Book one way flights from $711 or round trip flights from $1,329.

      • IAD 3:10 PM
        28h 35m
        1 stop
        KTI 6:45 AM
        Washington D.C. - Phnom Penh | Sat, Sep 5 | Etihad Airways
        KTI 8:55 AM
        35h 50m
        1 stop
        IAD 9:45 AM
        Phnom Penh - Washington D.C. | Sat, Sep 12 | Etihad Airways
        $1,329 $3,534
        62% off
        62% off
        $3,534 $1,329
      • IAD 9:00 PM
        32h 15m
        1 stop
        KTI 4:15 PM
        Washington D.C. - Phnom Penh | Sat, Sep 5 | Qatar Airways
        KTI 5:40 PM
        33h
        1 stop
        IAD 3:40 PM
        Phnom Penh - Washington D.C. | Sat, Sep 12 | Qatar Airways
        $1,563 $3,534
        56% off
        56% off
        $3,534 $1,563
      • IAD 1:15 PM
        22h
        1 stop
        KTI 10:15 PM
        Washington D.C. - Phnom Penh | Sat, Sep 5 | Korean Air
        KTI 11:35 PM
        22h 30m
        1 stop
        IAD 11:05 AM
        Phnom Penh - Washington D.C. | Sat, Sep 12 | Korean Air
        $2,544 $3,534
        28% off
        28% off
        $3,534 $2,544
      • WAS 1:00 PM
        17h 25m
        1 stop
        KTI 2:00 PM
        Washington D.C. - Phnom Penh | Wed, Aug 19 | Normal Airline
        KTI 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        Phnom Penh - Washington D.C. | Fri, Aug 21 | Normal Airline
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        Find more flights
      • IAD 3:10 PM
        40h 35m
        1 stop
        KTI 6:45 PM
        Washington D.C. - Phnom Penh | Tue, Sep 1 | Etihad Airways
        $711 $1,152
        38% off
        38% off
        $1,152 $711
      • IAD 3:10 PM
        28h 35m
        1 stop
        KTI 6:45 AM
        Washington D.C. - Phnom Penh | Thu, Aug 27 | Etihad Airways
        $753 $1,152
        35% off
        35% off
        $1,152 $753
      • IAD 2:50 PM
        41h 5m
        1 stop
        KTI 6:55 PM
        Washington D.C. - Phnom Penh | Tue, Aug 18 | Etihad Airways
        $764 $1,152
        34% off
        34% off
        $1,152 $764
      • IAD 3:10 PM
        40h 35m
        1 stop
        KTI 6:45 PM
        Washington D.C. - Phnom Penh | Tue, Sep 15 | Etihad Airways
        $764
        34% off
        $1,152 $764
      • IAD 3:10 PM
        28h 35m
        1 stop
        KTI 6:45 AM
        Washington D.C. - Phnom Penh | Thu, Sep 17 | Etihad Airways
        $764
        34% off
        $1,152 $764
      • IAD 1:15 AM
        23h
        1 stop
        KTI 11:15 AM
        Washington D.C. - Phnom Penh | Thu, Sep 17 | EVA Air
        $767
        33% off
        $1,152 $767
      • IAD 1:15 PM
        38h 55m
        1 stop
        KTI 3:10 PM
        Washington D.C. - Phnom Penh | Thu, Aug 27 | Turkish Airlines
        $776
        33% off
        $1,152 $776
      • IAD 9:40 PM
        30h 30m
        1 stop
        KTI 3:10 PM
        Washington D.C. - Phnom Penh | Thu, Sep 17 | Turkish Airlines
        $787
        32% off
        $1,152 $787
      • IAD 3:10 PM
        28h 35m
        1 stop
        KTI 6:45 AM
        Washington D.C. - Phnom Penh | Sat, Aug 29 | Etihad Airways
        $797
        31% off
        $1,152 $797
      • IAD 3:10 PM
        28h 35m
        1 stop
        KTI 6:45 AM
        Washington D.C. - Phnom Penh | Sat, Sep 26 | Etihad Airways
        $829
        28% off
        $1,152 $829
      • WAS 1:00 PM
        17h 25m
        1 stop
        KTI 2:00 PM
        Washington D.C. - Phnom Penh | Wed, Aug 19 | Normal Airline
        Find more flights
        Find more flights

Popular airlines from Washington D.C. to Phnom Penh

You can choose from 2 airlines that fly from Washington D.C. to Phnom Penh, including Korean Air, EVA Air, Etihad Airways has lowest fares on this route.
Korean Air logo Korean Air
EVA Air logo EVA Air
Airlines are determined based on actual purchased flight tickets from Washington D.C. to Phnom Penh according to previous 12 months data from Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Washington D.C. to Phnom Penh (WAS-KTI)?

    Based on Trip.com data, Etihad Airways offers one-way fares as low as $711 on Cheapest nonstop routes (e.g. IAD to KTI on Tue, Sep 1), while Etihad Airways offers Cheapest nonstop round-trips from $1,329 departing on Sat, Sep 5 and returning on Sat, Sep 12.
  • At the moment, several airlines serve connecting flights from Washington D.C. to Phnom Penh, including: Korean Air EVA Air Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to Phnom Penh 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.
  • To find best deals on flights from Washington D.C. to Phnom Penh, 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 Tue, Sep 1, with one-way flights priced at just $711.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Etihad Airways.
    · 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 Phnom Penh travel is around December.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Washington D.C. to Phnom Penh is September, when demand for travel is lower.
  • After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Washington D.C. to Phnom Penh on August 25, 2026 with Etihad Airways, with prices starting at $1,300.
  • You can land at any one of the following hubs in Phnom Penh, with Dulles International Airport to Techo International Airport (IAD-KTI) is by far the most common option on this route: Phnom Penh International Airport (PNH) Techo International Airport (KTI).
  • The time difference between Phnom Penh and Washington D.C. is 12h.
  • 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Washington D.C. to Phnom Penh is $927. Fares vary by travel date, airline and availability.
  • Enter Washington D.C. and Phnom Penh, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.