Are direct flights from Boston to Phnom Penh always the best option?

Direct flights often offer convenience and save travel time, but they are not always the most economical choice. Flights with layovers or connecting flights can sometimes be significantly cheaper. Consider your budget and time constraints when deciding.

Can flexible travel dates help on Boston to Phnom Penh flights?

Being flexible with your travel dates can often lead to finding more affordable flight options. Prices for flights can vary greatly depending on the day of the week or time of year. Adjusting your departure or return by a few days may result in savings.

What extra costs should I check before booking Boston to Phnom Penh flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Also, consider the cost of transportation to and from the airports, as well as any visa requirements or travel insurance. These can add to your overall travel expenses.

Flights From Boston

To Phnom Penh

Cheap Flights from Boston to Phnom Penh

Browse current best options from Boston. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Boston

RatePunk searches hundreds of travel sites at once for deals on flights to Phnom Penh

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from Boston to Phnom Penh

Explore current cheapest deals departing from Boston to Phnom Penh

2026-08-18 – 2026-09-15
BOS - Phnom Penh
90% AI deal score
$1,199
$977
Round trip
2026-09-24 – 2026-10-21
BOS - Phnom Penh
85% AI deal score
$1,152
$977
Round trip
2026-08-31 – 2026-09-14
BOS - Phnom Penh
90% AI deal score
$1,215
$980
Round trip
2026-09-28 – 2026-10-13
BOS - Phnom Penh
85% AI deal score
$1,156
$980
Round trip
2027-01-11 – 2027-01-18
BOS - Phnom Penh
92% AI deal score
$1,387
$980
Round trip
2026-09-17 – 2026-09-29
BOS - Phnom Penh
84% AI deal score
$1,150
$980
Round trip
2026-09-28 – 2026-10-15
BOS - Phnom Penh
85% AI deal score
$1,155
$980
Round trip
2027-01-13 – 2027-01-20
BOS - Phnom Penh
92% AI deal score
$1,401
$980
Round trip
2026-09-16 – 2026-09-23
BOS - Phnom Penh
90% AI deal score
$1,193
$980
Round trip
2026-09-10 – 2026-10-05
BOS - Phnom Penh
84% AI deal score
$1,117
$980
Round trip

Boston to Phnom Penh: Overview

Insights for flights from Boston to Phnom Penh

Flights from Boston to Phnom Penh cover a substantial distance of 14,006 km, classifying this as a long-haul journey. This means you should expect a significant travel time, often involving multiple connections, to reach your destination.

For those seeking cheap flights from Boston to Phnom Penh, fares typically range from $1831–$2903, with a median price of $2315. Right now, current fares are near the typical level for this route. Approximately 7% of recent fares have been classified as a good price, indicating that finding significantly cheaper options can be challenging. New deals for this route are also infrequent, so setting up a price alert can be particularly helpful.

When is the cheapest time to fly from Boston to Phnom Penh? The data indicates that the most affordable months to travel are April, with a median fare of $1140, followed by June at $1448, and May at $1497. Planning your trip during these months could result in considerable savings compared to the overall median fare.

Most itineraries for this route involve connections, as 0% of recent fares were non-stop. This means that most itineraries connect at least once, with a typical journey involving 2 stopovers when connecting. You should factor in these layovers when planning your travel time.

A typical journey from Boston to Phnom Penh, including connections, takes approximately 61h 0m. This extended travel time is characteristic of long-haul international routes with multiple stopovers, so travelers should prepare for a lengthy trip.

How much is a round trip from Boston to Phnom Penh

Regular price: $1,059 - $2,320

Prices for flights from Boston to Phnom Penh are currently below the regular range.

The regular price range for flights from Boston to Phnom Penh is between $1059 and $2320. The current lowest deal is $978 with Cathay Pacific, for travel from Aug 18-Sep 15.

now $978

Low $1,059

High $2,320

The cheapest time to fly from Boston to Phnom Penh

The cheapest month to fly from Boston to Phnom Penh is April, with a median price of $1140. The most expensive month is May, with a median price of $1497. Generally, prices are lower from April to June.

April

Cheapest

Flights from $1,140

May

Most Expensive

Flights from $1,497

Apr

May

Jun

Direct flights from Boston to Phnom Penh

Cathay Pacific

Qatar Airways

Korean Air

Last-minute flights going from Boston to Phnom Penh

Wed, Jul 29

⌛ Last-Minute

BOS - Phnom Penh

Boston (BOS) - Phnom Penh (KTI)

$1,356

$1,995

One-way

Mon, Aug 3

⌛ Last-Minute

BOS - Phnom Penh

Boston (BOS) - Phnom Penh (KTI)

$1,256

$1,322

One-way

Tue, Aug 4

⌛ Last-Minute

BOS - Phnom Penh

Boston (BOS) - Phnom Penh (KTI)

$1,263

$1,121

One-way

Mon, Aug 10

⌛ Last-Minute

BOS - Phnom Penh

Boston (BOS) - Phnom Penh (KTI)

$1,261

$1,385

One-way

Wed, Aug 12

⌛ Last-Minute

BOS - Phnom Penh

Boston (BOS) - Phnom Penh (KTI)

Cathay Pacific

$1,205

$1,300

One-way

Mon, Aug 17

⌛ Last-Minute

BOS - Phnom Penh

Boston (BOS) - Phnom Penh (KTI)

Cathay Pacific

$1,207

$1,300

One-way

Biggest price drops on these dates for flights from Boston to Phnom Penh

7 nights

Jan 13 - Jan 20

$1,387 → $980

29%

7 nights

Jan 14 - Jan 21

$1,387 → $980

29%

7 nights

Jan 11 - Jan 18

$1,384 → $980

29%

5 nights

Oct 29 - Nov 3

$1,332 → $980

26%

Popular Airports to fly from Boston to Phnom Penh

Boston - Phnom Penh route insights

💸 Price insights

Recent fares are near the typical level

Recent fares for Boston to Phnom Penh are near the typical level, with a median of $2315.

📅 Best time to fly

April is historically cheapest at $1140

Historically, April is the cheapest month to fly, with a median price of $1140.

⏱️ Flight duration

Flights are typically 61h 0m

The median flight duration from Boston to Phnom Penh is 61 hours, with 2 stopovers.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on this route, with no direct flights available in recent data.

🏆 Airline highlight

Cathay Pacific has deals at $978

Cathay Pacific offers a deal for $978, departing August 18 and returning September 15.

🎯 Booking tip

Deals are rare for this route

Deals for flights from Boston to Phnom Penh are rare, so book when you see a good price.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Boston Logan International Airport is a good choice for flights from Boston to Phnom Penh.

📍 ~5 km from city center (reachable by car, bus, or subway)

💸 Flights from ~$1078

Phnom Penh main airports to arrive at

Techo International Airport (KTI)

Cheapest

Techo International Airport is a convenient arrival airport for flights from Boston to Phnom Penh.

📍 ~20 km from Phnom Penh (reachable by car)

💸 Flights from ~$1021

Airports nearby Phnom Penh used as alternative

Siem Reap–Angkor International Airport (SAI)

Siem Reap–Angkor International Airport is a reliable domestic alternative within Cambodia, offering extensive regional and long-haul connectivity.

📍 ~230 km from Phnom Penh (reachable by domestic flights or road, ~5-6 hours by road)

💸 Flights from ~$1,165

Business & First Class Flight Deals to Phnom Penh

81% AI deal score

$6,864

$6,112

Save $752

Frequently Asked Questions About Flights to Phnom Penh

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across various airlines and online travel agencies can often reveal better deals. Setting up price alerts may also help you catch drops in fares.

Booking flights in advance, often several months before your intended departure, can sometimes result in lower prices. However, prices can fluctuate, so monitoring fare trends may be beneficial. Last-minute deals are less common for international routes.

Comparing nearby airports at both your origin and destination can sometimes uncover alternative flight options or better prices. While it may require additional travel time, the savings can occasionally be significant. Always factor in ground transportation costs and convenience.

Related routes

More routes from Boston

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Flights to Phnom Penh from other cities

Flights from Bangkok to Phnom Penh Flights from Beijing to Phnom Penh Flights from Chiang Mai to Phnom Penh Flights from Davao to Phnom Penh Flights from Denpasar to Phnom Penh Flights from Ho Chi Minh City to Phnom Penh Flights from Hong Kong to Phnom Penh Flights from Kuala Lumpur to Phnom Penh Flights from Seoul to Phnom Penh Flights from Singapore to Phnom Penh Flights from Tokyo to Phnom Penh Flights from Toronto to Phnom Penh

Boston to Phnom Penh: Overview

Insights for flights from Boston to Phnom Penh

How much is a round trip from Boston to Phnom Penh

Regular price: $1,059 - $2,320

Prices for flights from Boston to Phnom Penh are currently below the regular range.

The regular price range for flights from Boston to Phnom Penh is between $1059 and $2320. The current lowest deal is $978 with Cathay Pacific, for travel from Aug 18-Sep 15.

now $978

Low $1,059

High $2,320

The cheapest time to fly from Boston to Phnom Penh

April

Cheapest

Flights from $1,140

May

Most Expensive

Flights from $1,497

Apr

May

Jun