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Flights from Boston to Phnom Penh

Find flight deals from Boston to Phnom Penh for the next 3 months. Book one way flights from $526 or round trip flights from $1,348.

      • BOS 4:25 PM
        27h 20m
        1 stop
        KTI 6:45 AM
        Boston - Phnom Penh | Sat, Jul 25 | Etihad Airways
        KTI 8:55 AM
        40h 45m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Sat, Aug 1 | Etihad Airways
        $1,348 $2,353
        43% off
        43% off
        $2,353 $1,348
      • BOS 4:25 PM
        27h 20m
        1 stop
        KTI 6:45 AM
        Boston - Phnom Penh | Sat, Aug 1 | Etihad Airways
        KTI 8:55 AM
        40h 45m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Sat, Aug 8 | Etihad Airways
        $1,348 $2,353
        43% off
        43% off
        $2,353 $1,348
      • BOS 4:25 PM
        39h 30m
        1 stop
        KTI 6:55 PM
        Boston - Phnom Penh | Tue, Aug 25 | Etihad Airways
        KTI 8:30 PM
        29h 10m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Tue, Sep 1 | Etihad Airways
        $1,353 $2,353
        42% off
        42% off
        $2,353 $1,353
      • BOS 4:25 PM
        39h 20m
        1 stop
        KTI 6:45 PM
        Boston - Phnom Penh | Tue, Jul 28 | Etihad Airways
        KTI 8:55 AM
        40h 45m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Mon, Aug 3 | Etihad Airways
        $1,455
        38% off
        $2,353 $1,455
      • BOS 1:45 AM
        28h 30m
        1 stop
        KTI 5:15 PM
        Boston - Phnom Penh | Mon, Aug 24 | Cathay Pacific
        KTI 8:55 AM
        40h 15m
        1 stop
        BOS 2:10 PM
        Phnom Penh - Boston | Mon, Aug 31 | Etihad Airways
        $1,460
        38% off
        $2,353 $1,460
      • BOS 12:55 PM
        22h 20m
        1 stop
        KTI 10:15 PM
        Boston - Phnom Penh | Mon, Aug 24 | Korean Air
        KTI 8:55 AM
        40h 15m
        1 stop
        BOS 2:10 PM
        Phnom Penh - Boston | Mon, Aug 31 | Etihad Airways
        $1,495
        36% off
        $2,353 $1,495
      • BOS 12:55 PM
        22h 20m
        1 stop
        KTI 10:15 PM
        Boston - Phnom Penh | Tue, Aug 25 | Korean Air
        KTI 8:30 PM
        29h 10m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Tue, Sep 1 | Etihad Airways
        $1,509
        36% off
        $2,353 $1,509
      • BOS 11:05 PM
        30h 35m
        1 stop
        KTI 4:40 PM
        Boston - Phnom Penh | Tue, Aug 25 | Emirates
        KTI 8:45 PM
        28h 25m
        1 stop
        BOS 2:10 PM
        Phnom Penh - Boston | Tue, Sep 1 | Emirates
        $1,589
        32% off
        $2,353 $1,589
      • BOS 12:55 PM
        22h 20m
        1 stop
        KTI 10:15 PM
        Boston - Phnom Penh | Wed, Aug 19 | Korean Air
        KTI 8:55 AM
        40h 45m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Wed, Aug 26 | Etihad Airways
        $1,615
        31% off
        $2,353 $1,615
      • BOS 1:45 AM
        21h 30m
        1 stop
        KTI 10:15 AM
        Boston - Phnom Penh | Wed, Aug 19 | Cathay Pacific
        KTI 8:55 AM
        40h 45m
        1 stop
        BOS 2:40 PM
        Phnom Penh - Boston | Wed, Aug 26 | Etihad Airways
        $1,670
        28% off
        $2,353 $1,670
      • BOS 1:00 PM
        17h 25m
        1 stop
        KTI 2:00 PM
        Boston - Phnom Penh | Tue, Jul 14 | Normal Airline
        KTI 3:00 PM
        6h
        Nonstop
        BOS 4:00 PM
        Phnom Penh - Boston | Thu, Jul 16 | Normal Airline
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        Find more flights
      • BOS 1:45 AM
        21h 30m
        1 stop
        KTI 10:15 AM
        Boston - Phnom Penh | Wed, Sep 2 | Cathay Pacific
        $526 $908
        42% off
        42% off
        $908 $526
      • BOS 1:45 AM
        28h 30m
        1 stop
        KTI 5:15 PM
        Boston - Phnom Penh | Tue, Aug 25 | Cathay Pacific
        $579 $908
        36% off
        36% off
        $908 $579
      • BOS 1:45 AM
        28h 30m
        1 stop
        KTI 5:15 PM
        Boston - Phnom Penh | Wed, Aug 19 | Cathay Pacific
        $601 $908
        34% off
        34% off
        $908 $601
      • BOS 12:55 PM
        22h 20m
        1 stop
        KTI 10:15 PM
        Boston - Phnom Penh | Wed, Sep 2 | Korean Air
        $601
        34% off
        $908 $601
      • BOS 1:45 AM
        28h 30m
        1 stop
        KTI 5:15 PM
        Boston - Phnom Penh | Mon, Aug 31 | Cathay Pacific
        $602
        34% off
        $908 $602
      • BOS 1:45 AM
        21h 30m
        1 stop
        KTI 10:15 AM
        Boston - Phnom Penh | Tue, Sep 1 | Cathay Pacific
        $602
        34% off
        $908 $602
      • BOS 1:45 AM
        21h 30m
        1 stop
        KTI 10:15 AM
        Boston - Phnom Penh | Thu, Sep 3 | Cathay Pacific
        $613
        32% off
        $908 $613
      • BOS 1:45 AM
        21h 30m
        1 stop
        KTI 10:15 AM
        Boston - Phnom Penh | Thu, Aug 20 | Cathay Pacific
        $614
        32% off
        $908 $614
      • BOS 12:55 PM
        22h 20m
        1 stop
        KTI 10:15 PM
        Boston - Phnom Penh | Tue, Sep 1 | Korean Air
        $639
        30% off
        $908 $639
      • BOS 12:55 PM
        22h 20m
        1 stop
        KTI 10:15 PM
        Boston - Phnom Penh | Thu, Aug 20 | Korean Air
        $644
        28% off
        $908 $644
      • BOS 1:00 PM
        17h 25m
        1 stop
        KTI 2:00 PM
        Boston - Phnom Penh | Tue, Jul 14 | Normal Airline
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        Find more flights

Displayed flight fares from Boston to Phnom Penh are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Find cheap airlines flights from Boston to Phnom Penh

You can choose from 5 airlines that fly from Boston to Phnom Penh, including Cathay Pacific, Etihad Airways, and Delta Air Lines. Cathay Pacific has lowest fares on this route.
Cathay Pacific logo Cathay Pacific
Etihad Airways logo Etihad Airways
Delta Air Lines logo Delta Air Lines
Korean Air logo Korean Air
WestJet logo WestJet
Airlines are determined based on actual purchased flight tickets from Boston to Phnom Penh according to previous 12 months data from Trip.com.

Flight Info | Boston to Phnom Penh

The distance between Boston and Phnom Penh is approximately 14,005.2 km. Based on Trip.com's data travel demand peaks in December. The off-season for travel is September.

Cheapest one-way flight price$526
Cheapest round-trip ticket price$1,348
Off-season for travelSeptember
Peak season for travelDecember
Flight distance14,005.2 km
Popular airlineCathay Pacific
Flight statistics for the Boston–Phnom Penh route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Boston to Phnom Penh (BOS-KTI)?

    Based on Trip.com data, Cathay Pacific offers one-way fares as low as $526 on Cheapest nonstop routes (e.g. BOS to KTI on Wed, Sep 2), while Etihad Airways offers Cheapest nonstop round-trips from $1,348 departing on Sat, Jul 25 and returning on Sat, Aug 1.
  • At the moment, you can catch a nonstop flight from Boston to Phnom Penh with the following airlines, including: Japan Airlines Selected airlines are based on historical data collected from flight bookings users made 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 Boston 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 Boston 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 Wed, Sep 2, with one-way flights priced at just $526.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Cathay Pacific.
    · 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 Boston to Phnom Penh is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Boston to Phnom Penh on July 25, 2026 with Etihad Airways, with prices starting at $1,348.
  • You can land at any one of the following hubs in Phnom Penh, with Boston Logan International Airport to Techo International Airport (BOS-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 Boston 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.

Explore More Popular Flights

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

Book with no extra fees

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.