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).

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

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

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

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

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

Yes. Cheapflights offers flight deals from Oregon 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.

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Cheap flight deals from Oregon to Siem Reap

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Everything you need to know about your flight from Oregon to Siem Reap

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

It’s typically best to fly out from Oregon to Region of Siem Reap in the evening. Doing so could potentially save you 13% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Siem Reap

See what other customers who have flown with Singapore Airlines from Oregon to Siem Reap have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very good

1,388 reviews

Reviews

1 / 20

2.0

Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.

Singapore Airlines

8.1

Very good

1,388 reviews

Singapore Airlines

8.1

Very good

1,388 reviews

Reviews

1 / 20

2.0

Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.

Related info for your journey

Can I find deals for flights from Oregon to Siem Reap that include hotel bookings?
Yes. In addition to deals on Oregon to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Oregon to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Siem Reap.
Can I find deals for business class flights from Oregon to Siem Reap?
Yes. Cheapflights offers flight deals from Oregon 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.

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Oregon to Siem Reap

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Top airline flying from Oregon to Siem Reap

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$1,091	Average$1,240	FlexibilityNo cancel fee	On-time81%

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Find cheap flights from Oregon to Siem Reap with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Oregon to Siem Reap

Keep the following information in mind while searching for Oregon to Siem Reap flight deals. Data was last updated October 28, 2025.

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Cheapflights Insights

Everything you need to know about your flight from Oregon to Siem Reap

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

Reviews of airlines servicing Siem Reap

See what other customers who have flown with Singapore Airlines from Oregon to Siem Reap have to say. Users have also rated airlines 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 Oregon to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

Can I find deals for business class flights from Oregon 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 Oregon 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 Oregon to Siem Reap by cabin class

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

Oregon and Siem Reap flights

Browse other Oregon and Siem Reap flight options. Last updated on October 28, 2025.

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Top airline flying from Oregon to Siem Reap

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Cheap flights from Oregon to Siem Reap

Find cheap flights from Oregon to Siem Reap with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Oregon to Siem Reap

Keep the following information in mind while searching for Oregon to Siem Reap flight deals. Data was last updated October 28, 2025.

Most accurate provider

Most trusted provider

Cheapflights Insights

Everything you need to know about your flight from Oregon to Siem Reap

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

Reviews of airlines servicing Siem Reap

See what other customers who have flown with Singapore Airlines from Oregon to Siem Reap have to say. Users have also rated airlines 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 Oregon to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

Top airline flying from Oregon to Siem Reap

100% Free

Book with Flexibility

Travel Smart