How do I get Price Alerts for flights from Boston to Siem Reap?

Search flight deals from Boston to Siem Reap . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Boston to Siem Reap with momondo?

By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

When did momondo last update prices for flights from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport?

Prices for flights from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport were last updated today.

How old do you have to be to fly from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport.

What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$666 Cheap Flights from Boston to Siem Reap in 2026/27

Find the cheapest flights from Boston to Siem Reap

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:10 pm - 12:40 pmBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

50h 30m2 stops Dubai Intl Bangkok Suvarnabhumi

11:50 pm - 1:55 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

26h 05m2 stops Bangkok Suvarnabhumi Dubai Intl

$1,356Emirates

Mon, Nov 23 - Tue, Dec 1

11:30 am - 9:55 amBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

34h 25m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:45 am - 9:22 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

46h 37m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,361Singapore Airlines

Tue, Jan 26 - Sun, Feb 14

10:10 pm - 9:10 pmBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

35h 00m2 stops Dubai Intl Bangkok Suvarnabhumi

1:20 pm - 1:55 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

36h 35m2 stops Bangkok Suvarnabhumi Dubai Intl

$1,367Emirates

Tue, Jan 26 - Sun, Feb 14

11:30 am - 9:55 amBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

34h 25m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:45 am - 9:22 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

46h 37m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,375Singapore Airlines

Tue, Jan 26 - Sun, Feb 14

1:00 pm - 4:00 pmBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

39h 00m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:30 am - 8:10 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

44h 40m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,416Singapore Airlines

Mon, Nov 16 - Mon, May 24

5:59 pm - 8:30 pmBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

62h 31m2 stops Los Angeles Ho Chi Minh City

12:55 pm - 7:18 amSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

29h 23m2 stops Bangkok Suvarnabhumi Los Angeles

$1,458Multiple Airlines

Mon, Nov 16 - Mon, May 24

4:09 pm - 4:00 pmBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

35h 51m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:30 am - 9:53 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

46h 23m2 stops Singapore Changi San Francisco

$1,459Singapore Airlines

Mon, Nov 16 - Sun, May 23

8:00 am - 9:55 amBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

61h 55m2 stops San Francisco Singapore Changi

10:45 am - 9:22 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

46h 37m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,496Singapore Airlines

Tue, Jan 26 - Sun, Feb 14

11:30 am - 9:55 amBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

34h 25m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

4:50 pm - 11:48 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

42h 58m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,499Singapore Airlines

Tue, Jan 26 - Sun, Feb 14

1:00 pm - 4:00 pmBOS Boston Logan Intl-SAI Siem Reap–Angkor Intl

39h 00m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:30 am - 8:10 pmSAI Siem Reap–Angkor Intl-BOS Boston Logan Intl

44h 40m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,501Singapore Airlines

Mon, Nov 16 - Mon, May 24

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Emirates flights from Boston to Siem Reap

Our best Emirates deals on Boston to Siem Reap flight tickets

Emirates

Nov 23

BOS10:10 pmBoston Logan Intl

50h 30m

2 stops

SAI12:40 pmSiem Reap–Angkor Intl

Dec 1

SAI11:50 pmSiem Reap–Angkor Intl

26h 05m

2 stops

BOS1:55 pmBoston Logan Intl

$1,356

Emirates

Jan 26

BOS10:10 pmBoston Logan Intl

35h 00m

2 stops

SAI9:10 pmSiem Reap–Angkor Intl

Feb 14

SAI1:20 pmSiem Reap–Angkor Intl

36h 35m

2 stops

BOS1:55 pmBoston Logan Intl

$1,367

Emirates

Dec 24

BOS10:10 pmBoston Logan Intl

35h 00m

2 stops

SAI9:10 pmSiem Reap–Angkor Intl

Dec 31

SAI1:20 pmSiem Reap–Angkor Intl

36h 35m

2 stops

BOS1:55 pmBoston Logan Intl

$20,037

Singapore Airlines flights from Boston to Siem Reap

Our best Singapore Airlines deals on Boston to Siem Reap flight tickets

Singapore Airlines

Jan 26

BOS11:30 amBoston Logan Intl

34h 25m

3 stops

SAI9:55 amSiem Reap–Angkor Intl

Feb 14

SAI10:45 amSiem Reap–Angkor Intl

46h 37m

3 stops

BOS9:22 pmBoston Logan Intl

$1,361

Singapore Airlines

Jan 26

BOS11:30 amBoston Logan Intl

34h 25m

3 stops

SAI9:55 amSiem Reap–Angkor Intl

Feb 14

SAI10:45 amSiem Reap–Angkor Intl

46h 37m

3 stops

BOS9:22 pmBoston Logan Intl

$1,375

Singapore Airlines

Nov 16

BOS1:00 pmBoston Logan Intl

39h 00m

3 stops

SAI4:00 pmSiem Reap–Angkor Intl

May 24

SAI10:30 amSiem Reap–Angkor Intl

44h 40m

3 stops

BOS8:10 pmBoston Logan Intl

$1,416

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Mon 11/23

10:10 pm-12:40 pm

2 stops50h 30m

Siem Reap–Angkor Intl

Tue 12/1

11:50 pm-1:55 pm

2 stops26h 05m

$1,356

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Tue 1/26

11:30 am-9:55 am

3 stops34h 25m

Siem Reap–Angkor Intl

Sun 2/14

10:45 am-9:22 pm

3 stops46h 37m

$1,361

Quickest round-trip

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Tue 1/26

10:10 pm-9:10 pm

2 stops35h 00m

Siem Reap–Angkor Intl

Sun 2/14

1:20 pm-1:55 pm

2 stops36h 35m

$1,367

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Tue 1/26

11:30 am-9:55 am

3 stops34h 25m

Siem Reap–Angkor Intl

Sun 2/14

10:45 am-9:22 pm

3 stops46h 37m

$1,375

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Mon 11/16

1:00 pm-4:00 pm

3 stops39h 00m

Siem Reap–Angkor Intl

Mon 5/24

10:30 am-8:10 pm

3 stops44h 40m

$1,416

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Mon 11/16

5:59 pm-8:30 pm

2 stops62h 31m

Siem Reap–Angkor Intl

Mon 5/24

12:55 pm-7:18 am

2 stops29h 23m

$1,458

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Mon 11/16

4:09 pm-4:00 pm

3 stops35h 51m

Siem Reap–Angkor Intl

Sun 5/23

10:30 am-9:53 pm

2 stops46h 23m

$1,459

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Tue 1/26

8:00 am-9:55 am

2 stops61h 55m

Siem Reap–Angkor Intl

Sun 2/14

10:45 am-9:22 pm

3 stops46h 37m

$1,496

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Tue 1/26

11:30 am-9:55 am

3 stops34h 25m

Siem Reap–Angkor Intl

Sun 2/14

4:50 pm-11:48 pm

3 stops42h 58m

$1,499

BostonSiem Reap

BOS Boston Logan Intl - SAI Siem Reap–Angkor Intl

BOSSAI

Boston Logan Intl

Mon 11/16

1:00 pm-4:00 pm

3 stops39h 00m

Siem Reap–Angkor Intl

Mon 5/24

10:30 am-8:10 pm

3 stops44h 40m

$1,501

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

When to book flights from Boston to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Boston to Siem Reap (BOS to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Siem Reap

Best Price Found	$666
Fastest flight time	29h 35m
Direct flights	None

The best one-way flight to Siem Reap from Boston in the past 72 hours is $666. The best round-trip flight deal from Boston to Siem Reap found on momondo in the last 72 hours is $1,356.

The fastest flight from Boston to Siem Reap takes 29h 35m

There are no direct flights from Boston to Siem Reap. There are no popular flight routes from Boston to Siem Reap.

Search flight deals

Frequently asked questions about flying from Boston to Siem Reap

How far is Boston Logan Intl to Siem Reap–Angkor Intl by plane?
Boston Logan Intl and Siem Reap–Angkor Intl are 8567.5 mi apart from one another. 29h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport?
Prices for flights from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport were last updated today.
How old do you have to be to fly from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Siem Reap–Angkor Intl Airport.
What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?
The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Boston to Siem Reap

How do I get Price Alerts for flights from Boston to Siem Reap?
Search flight deals from Boston to Siem Reap. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Boston to Siem Reap with momondo?
By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Siem Reap?

It is quick and easy to find Boston to Siem Reap flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Siem Reap that suits you.

Can I find flights from Boston to Siem Reap with flexible booking policies on momondo?

Flights from Boston to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to Siem Reap?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Siem Reap from Boston.

I’m not ready to book a flight from Boston to Siem Reap right now. Can momondo alert me if prices change?

Price alerts on flights to Siem Reap from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Siem Reap trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 12/5

Sat 12/12

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Cambodia

Cabin classes

Other Cambodia destinations

Other flights from Boston

Complete your trip

Feeling lucky

Cabin classes currently available on flights to Siem Reap

First Class to Siem Reap

Business Class to Siem Reap

Cheap flights from Boston to Siem Reap from $666

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Siem Reap departing on 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Boston to Siem Reap

Cheap round-trip flights

Cheap one-way flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Emirates flights from Boston to Siem Reap

Our best Emirates deals on Boston to Siem Reap flight tickets

Singapore Airlines flights from Boston to Siem Reap

Our best Singapore Airlines deals on Boston to Siem Reap flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Boston to Siem Reap that are best for you.

When to book flights from Boston to Siem Reap

Cheap Boston to Siem Reap (BOS to SAI) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Boston to Siem Reap

Frequently asked questions about flying from Boston to Siem Reap

Why use momondo?

An easier way to manage your Siem Reap trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Cambodia

Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.

Popular cities in Cambodia

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Boston

According to popular flight searches on momondo this year

Complete your trip to Siem Reap

Explore popular destinations other users love

According to popular flight searches on momondo this year