Book a trip from Boston to Phnom Penh with Cathay Pacific , fares from USD1,225

PROMOTION CODE (OPTIONAL)

Fly Cathay Pacific from Boston (BOS) to Phnom Penh (KTI). Enjoy award-winning service, entertainment, and an enhanced menu for Premium Economy and Business class during your flight. Book direct to secure our best fare and join as a Cathay member to earn Status Points or Miles.

When is the best time to fly from Boston (BOS) to Phnom Penh (KTI)?

cmp-daily-histogram-bars-legend-min-price-aria-label USD1.2K
cmp-daily-histogram-bars-legend-max-price-aria-label USD2.5K
Displaying fares for November-2026
  • BOS–KTI, 15/11/2026 – 05/12/2026: From USD1,325
    15

    Sun

    NOV

  • BOS–KTI, 16/11/2026 – 05/12/2026: From USD1,275
    16

    Mon

  • BOS–KTI, 17/11/2026 – 05/12/2026: From USD1,275
    17

    Tue

  • BOS–KTI, 18/11/2026 – 05/12/2026: From USD1,436
    18

    Wed

  • BOS–KTI, 19/11/2026 – 05/12/2026: From USD1,578
    19

    Thu

  • BOS–KTI, 20/11/2026 – 05/12/2026: From USD2,108
    20

    Fri

  • BOS–KTI, 21/11/2026 – 16/12/2026: From USD2,449
    21

    Sat

  • BOS–KTI, 22/11/2026 – 16/12/2026: From USD1,436
    22

    Sun

  • BOS–KTI, 23/11/2026 – 16/12/2026: From USD1,225
    23

    Mon

  • BOS–KTI, 24/11/2026 – 17/12/2026: From USD1,225
    24

    Tue

  • BOS–KTI, 25/11/2026 – 16/12/2026: From USD1,528
    25

    Wed

  • BOS–KTI, 26/11/2026 – 16/12/2026: From USD1,729
    26

    Thu

  • BOS–KTI, 27/11/2026 – 08/12/2026: From USD1,275
    27

    Fri

  • BOS–KTI, 28/11/2026 – 16/12/2026: From USD1,275
    28

    Sat

  • BOS–KTI, 29/11/2026 – 16/12/2026: From USD1,275
    29

    Sun

  • BOS–KTI, 30/11/2026 – 08/12/2026: From USD1,288
    30

    Mon

  • BOS–KTI, 01/12/2026 – 17/12/2026: From USD1,397
    01

    Tue

    DEC

  • BOS–KTI, 02/12/2026 – 17/12/2026: From USD1,397
    02

    Wed

  • BOS–KTI, 03/12/2026 – 08/12/2026: From USD1,469
    03

    Thu

  • BOS–KTI, 04/12/2026 – 08/12/2026: From USD1,631
    04

    Fri

  • BOS–KTI, 05/12/2026 – 27/12/2026: From USD1,631
    05

    Sat

  • BOS–KTI, 06/12/2026 – 27/12/2026: From USD1,631
    06

    Sun

  • BOS–KTI, 07/12/2026 – 27/12/2026: From USD1,581
    07

    Mon

  • BOS–KTI, 08/12/2026 – 27/12/2026: From USD1,581
    08

    Tue

  • BOS–KTI, 09/12/2026 – 27/12/2026: From USD1,581
    09

    Wed

  • BOS–KTI, 10/12/2026 – 27/12/2026: From USD1,603
    10

    Thu

  • BOS–KTI, 11/12/2026 – 27/12/2026: From USD2,541
    11

    Fri

  • BOS–KTI, 12/12/2026 – 27/12/2026: From USD2,541
    12

    Sat

  • BOS–KTI, 13/12/2026 – 27/12/2026: From USD2,541
    13

    Sun

  • BOS–KTI, 14/12/2026 – 24/12/2026: From USD2,491
    14

    Mon

  • RangeUSD1,225-USD2,541

    Travel Destination Facts

    Aircraft Type

    Boeing 777, Airbus A321neo, Airbus A330 and Airbus A350 aircraft*

    Departure time zone
    The Americas/Boston GMT-05:00
    Arrival time zone
    Asia-Pacific/Phnom Penh GMT+07:00
    Cabin Class

    First class, Business class, Premium Economy, Economy^

    Lowest fare month
    August

    Explore flight fares from Boston (BOS) to Phnom Penh (KTI)

    Make flexible bookings with Cathay Pacific and enjoy hassle-free travel when plans change.

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    Explore flight fares from Boston (BOS) to Phnom Penh (KTI)
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    To
    Fare Type
    Dates
    Price
    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    13/01/2027 - 25/01/2027

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    USD1,225

    Seen 1 hour ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    18/01/2027 - 25/01/2027

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    USD1,225

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    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    13/01/2027 - 15/02/2027

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    USD1,225

    Seen 1 day ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    14/01/2027 - 15/02/2027

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    USD1,225

    Seen 1 day ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    20/01/2027 - 15/02/2027

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    USD1,225

    Seen 1 day ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    25/01/2027 - 15/02/2027

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    USD1,225

    Seen 1 day ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    05/04/2027 - 27/04/2027

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    USD1,225

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    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    06/04/2027 - 27/04/2027

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    USD1,225

    Seen 1 day ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
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    Economy
    07/04/2027 - 27/04/2027

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    USD1,225

    Seen 1 day ago

    Boston (BOS)Phnom Penh (KTI)Round-trip
    /
    Economy
    13/04/2027 - 26/04/2027

    From

    USD1,225

    Seen 1 day ago

    Lowest fares on flights found by other customers on Cathay Pacific’s official website in the last 48 hours. All fares are subject to change at any time. Other Cathay Pacific Terms & Conditions apply. Flights are subject to regulatory approval.

    Book Business Class flights to Phnom Penh - selected offers

    Experience refined comfort in our award-winning Business class.

    keyboard_arrow_down
    Lowest fares on flights found by other customers on Cathay Pacific’s official website in the last 48 hours. All fares are subject to change at any time. Other Cathay Pacific Terms & Conditions apply. Flights are subject to regulatory approval.

    Flights from Boston BOS to Phnom Penh KTI

    Phnom Penh, formerly known as the Paris of the East, has a chaotic edginess that blends with a charming elegance. Book your flight to Phnom Penh with Cathay Pacific and discover a city brimming with delights. Generous luggage allowances, large comfortable seats, and excellent inflight entertainment ensure you enjoy your Phnom Penh flight.

    Discover Phnom Penh

    Start at the National Museum of Cambodia for an understanding of this country’s complicated past and current growth. The Tuol Sleng Genocide Museum provides a harrowing look into Cambodia’s history. Take a trip to the nearby Killing Fields of Choeung Ek – a memorial containing hundreds of human bones honouring the deceased. Admire the opulent Royal Palace and Silver Pagoda, experience spirituality at Wats Phnom and Ounalom, stroll along the riverfront, and see traditional stilt houses at Tonle Bati. Shop for local goods and snacks at the Russian Market.

    Best time to visit Phnom Penh

    Temperatures are coolest between November and January, attracting the most visitors. March to May sees the hottest temperatures, the May to October wet season is warm and humid, and the most rainfall occurs between July and September. Whenever you visit, fly in comfort and style when you choose Cathay Pacific for your Phnom Penh flights.

    All fares displayed include taxes and carrier-imposed surcharges. All fares, government taxes and fees, and surcharges are subject to change at any time. For ticket cancellations, where applicable, the Hong Kong Passenger Security Charge, the Hong Kong Air Passenger Departure Tax, and the Hong Kong International Airport Construction Fee will be refunded without any administration fees.