Cheap flights from Massachusetts to Siem Reap from $639

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to Siem Reap departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Massachusetts to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Emirates Logo
11:05 pm - 12:15 pm
BOS
-
SAI
26h 10m
2 stops
Emirates Logo
12:55 pm - 2:10 pm
SAI
-
BOS
36h 15m
2 stops
$1,310Emirates
Wed, Sep 30 - Fri, Oct 9
Multiple Airlines Logo
9:40 pm - 6:55 pm
BOS
-
SAI
34h 15m
2 stops
Multiple Airlines Logo
7:35 pm - 5:40 pm
SAI
-
BOS
33h 05m
3 stops
$1,482Multiple Airlines
Wed, Sep 30 - Fri, Oct 9
Emirates Logo
4:55 pm - 9:30 pm
BOS
-
SAI
65h 35m
3 stops
Emirates Logo
12:55 pm - 2:10 pm
SAI
-
BOS
36h 15m
2 stops
$1,519Emirates
Wed, Sep 30 - Fri, Oct 9
Emirates Logo
11:05 pm - 9:30 pm
BOS
-
SAI
35h 25m
2 stops
Emirates Logo
11:50 pm - 2:10 pm
SAI
-
BOS
49h 20m
2 stops
$1,535Emirates
Sun, Jul 26 - Sat, Aug 8
Lufthansa Logo
8:05 pm - 6:55 pm
BOS
-
SAI
35h 50m
3 stops
Lufthansa Logo
7:35 pm - 5:40 pm
SAI
-
BOS
33h 05m
3 stops
$1,566Lufthansa
Wed, Sep 30 - Fri, Oct 9
Multiple Airlines Logo
4:25 pm - 11:15 am
BOS
-
SAI
31h 50m
2 stops
Multiple Airlines Logo
3:10 pm - 2:40 pm
SAI
-
BOS
58h 30m
2 stops
$1,631Multiple Airlines
Mon, Aug 3 - Fri, Aug 21
Multiple Airlines Logo
4:25 pm - 11:15 am
BOS
-
SAI
31h 50m
2 stops
Multiple Airlines Logo
3:10 pm - 2:40 pm
SAI
-
BOS
58h 30m
2 stops
$1,632Multiple Airlines
Mon, Aug 3 - Fri, Aug 21
Multiple Airlines Logo
10:00 pm - 12:15 pm
BOS
-
SAI
27h 15m
2 stops
Multiple Airlines Logo
7:35 pm - 3:15 pm
SAI
-
BOS
30h 40m
2 stops
$1,730Multiple Airlines
Wed, Jul 8 - Wed, Jul 15
Lufthansa Logo
5:45 pm - 6:55 pm
BOS
-
SAI
38h 10m
3 stops
Lufthansa Logo
7:35 pm - 5:40 pm
SAI
-
BOS
33h 05m
3 stops
$1,787Lufthansa
Wed, Sep 30 - Fri, Oct 9
Emirates Logo
11:05 pm - 9:30 pm
BOS
-
SAI
35h 25m
2 stops
Emirates Logo
11:50 pm - 6:22 pm
SAI
-
BOS
53h 32m
3 stops
$1,835Emirates
Sun, Jul 26 - Sat, Aug 8

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.

Lufthansa flights from Massachusetts to Siem Reap

Our best Lufthansa deals on Massachusetts to Siem Reap flight tickets
Lufthansa
Sep 30
BOS8:05 pmBoston Logan Intl
35h 50m
3 stops
SAI6:55 pmSiem Reap–Angkor Intl
Oct 9
SAI7:35 pmSiem Reap–Angkor Intl
33h 05m
3 stops
BOS5:40 pmBoston Logan Intl
$1,566
Lufthansa
Sep 30
BOS5:45 pmBoston Logan Intl
38h 10m
3 stops
SAI6:55 pmSiem Reap–Angkor Intl
Oct 9
SAI7:35 pmSiem Reap–Angkor Intl
33h 05m
3 stops
BOS5:40 pmBoston Logan Intl
$1,787

Qatar Airways flights from Massachusetts to Siem Reap

Our best Qatar Airways deals on Massachusetts to Siem Reap flight tickets
Qatar Airways
Jul 8
BOS7:04 pmBoston Logan Intl
30h 11m
3 stops
SAI12:15 pmSiem Reap–Angkor Intl
Jul 15
SAI7:35 pmSiem Reap–Angkor Intl
30h 40m
2 stops
BOS3:15 pmBoston Logan Intl
$1,987
Qatar Airways
Aug 3
BOS7:09 pmBoston Logan Intl
30h 06m
3 stops
SAI12:15 pmSiem Reap–Angkor Intl
Aug 21
SAI9:40 amSiem Reap–Angkor Intl
64h 35m
2 stops
BOS3:15 pmBoston Logan Intl
$1,999
Qatar Airways
Aug 3
BOS7:09 pmBoston Logan Intl
30h 06m
3 stops
SAI12:15 pmSiem Reap–Angkor Intl
Aug 21
SAI9:40 amSiem Reap–Angkor Intl
64h 35m
2 stops
BOS3:15 pmBoston Logan Intl
$2,067

momondo Fare Finder

 
Customize your flight search to find flights from Massachusetts to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 25, 2026.
Use the filters below to find and compare flights from Massachusetts to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Wed 9/30

11:05 pm-12:15 pm

2 stops26h 10m

Siem Reap–Angkor Intl

Fri 10/9

12:55 pm-2:10 pm

2 stops36h 15m

$1,310

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Wed 9/30

9:40 pm-6:55 pm

2 stops34h 15m

Siem Reap–Angkor Intl

Fri 10/9

7:35 pm-5:40 pm

3 stops33h 05m

$1,482

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Wed 9/30

4:55 pm-9:30 pm

3 stops65h 35m

Siem Reap–Angkor Intl

Fri 10/9

12:55 pm-2:10 pm

2 stops36h 15m

$1,519

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Sun 7/26

11:05 pm-9:30 pm

2 stops35h 25m

Siem Reap–Angkor Intl

Sat 8/8

11:50 pm-2:10 pm

2 stops49h 20m

$1,535

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Wed 9/30

8:05 pm-6:55 pm

3 stops35h 50m

Siem Reap–Angkor Intl

Fri 10/9

7:35 pm-5:40 pm

3 stops33h 05m

$1,566

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Mon 8/3

4:25 pm-11:15 am

2 stops31h 50m

Siem Reap–Angkor Intl

Fri 8/21

3:10 pm-2:40 pm

2 stops58h 30m

$1,631

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Mon 8/3

4:25 pm-11:15 am

2 stops31h 50m

Siem Reap–Angkor Intl

Fri 8/21

3:10 pm-2:40 pm

2 stops58h 30m

$1,632
Quickest round-trip

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Wed 7/8

10:00 pm-12:15 pm

2 stops27h 15m

Siem Reap–Angkor Intl

Wed 7/15

7:35 pm-3:15 pm

2 stops30h 40m

$1,730

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Wed 9/30

5:45 pm-6:55 pm

3 stops38h 10m

Siem Reap–Angkor Intl

Fri 10/9

7:35 pm-5:40 pm

3 stops33h 05m

$1,787

BostonSiem Reap

BOS - SAI

BOSSAI

Boston Logan Intl

Sun 7/26

11:05 pm-9:30 pm

2 stops35h 25m

Siem Reap–Angkor Intl

Sat 8/8

11:50 pm-6:22 pm

3 stops53h 32m

$1,835

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Cheap Massachusetts to Siem Reap flight deals and tips

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

Fastest flight time

26h 10m

Direct flights

None
The fastest flight from Massachusetts to Siem Reap takes 26h 10m
There are no direct flights from Massachusetts to Siem Reap. There are no popular flight routes from Massachusetts to Siem Reap.

Frequently asked questions about flying from Massachusetts to Siem Reap

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

    Prices for flights from Massachusetts to Siem Reap–Angkor Intl Airport are updated daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts to Siem Reap–Angkor Intl Airport.

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

    The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Massachusetts to Siem Reap

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

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

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

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Massachusetts to Siem Reap. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Siem Reap from Massachusetts with this policy.

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

momondo provides multiple filters to help you find the best flight to Siem Reap from Massachusetts. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Siem Reap from Massachusetts. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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.
1 adult
Sat 7/25
Sat 8/1

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.