Cheap Flights from Boston to Phnom Penh from US$530

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 US$530 on Cheapest nonstop routes (e.g. BOS to KTI on Fri, Aug 21), while Cathay Pacific offers Cheapest nonstop round-trips from US$982 departing on Thu, Sep 17 and returning on Thu, Sep 24.

• Which airlines offer flights from Boston to Phnom Penh?

  At the moment, several airlines serve connecting flights from Boston to Phnom Penh, including: Korean Air Etihad Airways Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from Boston to Phnom Penh?

  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.

• How can I find the best deals on flights from Boston to Phnom Penh?

  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 Fri, Aug 21, with one-way flights priced at just US$530.
  · 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.

• When are flight tickets from Boston (BOS) to Phnom Penh (KTI) the cheapest?

  The cheapest months to fly from Boston to Phnom Penh is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Boston to Phnom Penh on?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Boston to Phnom Penh on August 19, 2026 with Cathay Pacific, with prices starting at US$542.

• Which airports can I fly to for Phnom Penh from Boston?

  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: Techo International Airport (KTI) Phnom Penh International Airport (PNH).

• Is there any time difference between Boston and Phnom Penh?

  The time difference between Phnom Penh and Boston is 12h.

• How do I change or cancel my ticket from Boston to Phnom Penh?

  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.

• What is the average cost of a one-way flight from Boston to Phnom Penh?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Boston to Phnom Penh is US$820. Fares vary by travel date, airline and availability.

• How do I book flights from Boston to Phnom Penh on Trip.com?

  Enter Boston 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.