In terms of precipitation, rainfall in Region of Siem Reap ranges from 0.0 - 10.2 inches per month. September is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Region of Siem Reap when rainfall is around 0.0 in.

If weather is an important factor for your trip to Region of Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 75.2 F).

What is the cheapest time of day to fly from BOS to SI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Region of Siem Reap as you normally would.

What airport do you fly from for flights from Boston to Siem Reap?

If you book a flight to Siem Reap from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston.

Can I find deals for flights from Boston to Siem Reap that include hotel bookings?

Yes. In addition to deals on Boston to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Boston to Siem Reap?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Siem Reap.

Can I find deals for business class flights from Boston to Siem Reap?

Yes. Cheapflights offers flight deals from Boston to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Flights from Boston to Siem Reap

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Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Qatar Airways from Boston to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Qatar Airways

7.4

Good

3,609 reviews

Reviews

1 / 20

6.0

Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

Qatar Airways

7.4

Good

3,609 reviews

Qatar Airways

7.4

Good

3,609 reviews

Reviews

1 / 20

6.0

Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

Related info for your journey

What airport do you fly from for flights from Boston to Siem Reap?
If you book a flight to Siem Reap from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston.
Can I find deals for flights from Boston to Siem Reap that include hotel bookings?
Yes. In addition to deals on Boston to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boston to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Siem Reap.
Can I find deals for business class flights from Boston to Siem Reap?
Yes. Cheapflights offers flight deals from Boston to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Boston to Siem Reap

Boston to Phnom Penh flights

Top airline flying from Boston to Siem Reap

Airline	Cheapest	Average	Flexibility	On-time
Qatar Airways	Cheapest$1,393	Average$1,677	FlexibilityNo cancel fee	On-time68%

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Find cheap flights from Boston to Siem Reap with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Qatar Airways from Boston to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Boston to Siem Reap?

Can I find deals for flights from Boston to Siem Reap that include hotel bookings?

How can I find direct flights from Boston to Siem Reap?

Can I find deals for business class flights from Boston to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Siem Reap by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Boston to Siem Reap by cabin class

Find flights from Boston to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Boston and Siem Reap flights

Browse other Boston and Siem Reap flight options. Last updated on August 18, 2025.

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Top airline flying from Boston to Siem Reap

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Cheap flights from Boston (BOS) to Siem Reap

Find cheap flights from Boston to Siem Reap with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Qatar Airways from Boston to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Boston to Siem Reap?

Can I find deals for flights from Boston to Siem Reap that include hotel bookings?

How can I find direct flights from Boston to Siem Reap?

Can I find deals for business class flights from Boston to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Boston to Siem Reap

100% Free

Book with Flexibility

Travel Smart