How long is the flight from Oregon to Region of Siem Reap?

Average flight duration from Oregon to Region of Siem Reap depends on which airport you fly into and out of. Flying from Portland to Siem Reap is 34h 20m on average, while flying from Redmond to Siem Reap is 37h 40m on average. Siem Reap is the most popular airport in Region of Siem Reap.

When did momondo last update prices for flights from Oregon to Siem Reap?

Prices for flights from Oregon to Siem Reap refresh daily.

How old do you have to be to fly from Oregon to Siem Reap?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Oregon to Siem Reap.

What documentation or ID do you need to fly to Siem Reap?

The necessary travel and health documents for your Siem Reap 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.

$574 Cheap Flights from Oregon to Siem Reap in 2026

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Find the cheapest flights from Oregon to Siem Reap

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:50 pm - 3:10 pm

PDX

SAI

34h 20m

2 stops

10:30 am - 9:47 am

SAI

PDX

37h 17m

2 stops

$1,254Singapore Airlines

Wed, Apr 22 - Mon, Jun 1

9:30 pm - 1:15 pm

PDX

SAI

25h 45m

3 stops

7:30 pm - 1:50 pm

SAI

PDX

32h 20m

3 stops

$1,289Multiple Airlines

Wed, Apr 22 - Mon, Jun 1

7:20 am - 9:40 am

PDX

SAI

36h 20m

2 stops

10:30 am - 2:55 pm

SAI

PDX

42h 25m

2 stops

$1,370Singapore Airlines

Mon, Jul 20 - Sat, Jul 25

9:30 pm - 6:45 pm

PDX

SAI

31h 15m

3 stops

12:55 pm - 11:30 pm

SAI

PDX

24h 35m

3 stops

$1,550Multiple Airlines

Mon, Jul 20 - Sat, Jul 25

1:52 pm - 9:40 am

PDX

SAI

53h 48m

2 stops

10:30 am - 1:10 pm

SAI

PDX

64h 40m

3 stops

$1,604Multiple Airlines

Wed, Apr 22 - Mon, Jun 1

7:45 pm - 12:15 pm

PDX

SAI

26h 30m

3 stops

7:30 pm - 9:31 am

SAI

PDX

28h 01m

2 stops

$1,692Multiple Airlines

Sun, Jun 14 - Sun, Jun 28

7:45 pm - 9:00 am

PDX

SAI

23h 15m

2 stops

7:30 pm - 9:31 am

SAI

PDX

28h 01m

3 stops

$1,811Multiple Airlines

Mon, Jul 20 - Sat, Jul 25

5:00 am - 9:40 am

PDX

SAI

38h 40m

2 stops

10:30 am - 9:24 am

SAI

PDX

36h 54m

2 stops

$1,955Multiple Airlines

Sun, Jun 14 - Sun, Jun 28

3:30 pm - 6:45 pm

PDX

SAI

37h 15m

3 stops

7:30 pm - 1:50 pm

SAI

PDX

32h 20m

3 stops

$2,151Multiple Airlines

Sun, Jun 14 - Sun, Jun 28

Singapore Airlines flights from Oregon to Region of Siem Reap

Our best Singapore Airlines deals on Oregon to Region of Siem Reap flight tickets

Singapore Airlines

Apr 22

PDX2:50 pmPortland

34h 20m

2 stops

SAI3:10 pmSiem Reap–Angkor Intl

Jun 1

SAI10:30 amSiem Reap–Angkor Intl

37h 17m

2 stops

PDX9:47 amPortland

$1,254

Singapore Airlines

Jul 20

PDX7:20 amPortland

36h 20m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Jul 25

SAI10:30 amSiem Reap–Angkor Intl

42h 25m

2 stops

PDX2:55 pmPortland

$1,370

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Wed 4/22

2:50 pm-3:10 pm

2 stops34h 20m

Siem Reap–Angkor Intl

Mon 6/1

10:30 am-9:47 am

2 stops37h 17m

$1,254

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Wed 4/22

9:30 pm-1:15 pm

3 stops25h 45m

Siem Reap–Angkor Intl

Mon 6/1

7:30 pm-1:50 pm

3 stops32h 20m

$1,289

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Mon 7/20

7:20 am-9:40 am

2 stops36h 20m

Siem Reap–Angkor Intl

Sat 7/25

10:30 am-2:55 pm

2 stops42h 25m

$1,370

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Mon 7/20

9:30 pm-6:45 pm

3 stops31h 15m

Siem Reap–Angkor Intl

Sat 7/25

12:55 pm-11:30 pm

3 stops24h 35m

$1,550

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Wed 4/22

1:52 pm-9:40 am

2 stops53h 48m

Siem Reap–Angkor Intl

Mon 6/1

10:30 am-1:10 pm

3 stops64h 40m

$1,604

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Sun 6/14

7:45 pm-12:15 pm

3 stops26h 30m

Siem Reap–Angkor Intl

Sun 6/28

7:30 pm-9:31 am

2 stops28h 01m

$1,692

Quickest round-trip

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Mon 7/20

7:45 pm-9:00 am

2 stops23h 15m

Siem Reap–Angkor Intl

Sat 7/25

7:30 pm-9:31 am

3 stops28h 01m

$1,811

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Sun 6/14

5:00 am-9:40 am

2 stops38h 40m

Siem Reap–Angkor Intl

Sun 6/28

10:30 am-9:24 am

2 stops36h 54m

$1,955

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Sun 6/14

3:30 pm-6:45 pm

3 stops37h 15m

Siem Reap–Angkor Intl

Sun 6/28

7:30 pm-1:50 pm

3 stops32h 20m

$2,151

Cheapest one-way

PortlandSiem Reap

PDX - SAI

PDXSAI

Portland

Wed 4/22

2:50 pm-6:20 pm

2 stops37h 30m

$574

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Oregon to Region of Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Airlines

Other information

What is the cheapest airline that flies from Oregon to Siem Reap?

Vietnam Airlines and ANA are the most popular carriers operating from Oregon to Siem Reap

Cheap Oregon to Region of Siem Reap flight deals and tips

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

Fastest flight time	34h 20m
Direct flights	None

The fastest flight from Oregon to Region of Siem Reap takes 34h 20m

There are no direct flights from Oregon to Region of Siem Reap. There are no popular flight routes from Oregon to Region of Siem Reap.

Search flight deals

When did momondo last update prices for flights from Oregon to Siem Reap?
Prices for flights from Oregon to Siem Reap refresh daily.
How old do you have to be to fly from Oregon to Siem Reap?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Oregon to Siem Reap.
What documentation or ID do you need to fly to Siem Reap?
The necessary travel and health documents for your Siem Reap 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.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Oregon to Siem Reap. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Oregon to Siem Reap on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

If you are simply researching potential flights to Siem Reap, momondo offers a useful price alert feature which will track prices for flights to Siem Reap from Oregon and alert you when they change.

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Cheap flights from Oregon to Siem Reap from $574

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oregon to Siem Reap departing on 4/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Oregon to Region of Siem Reap

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How long is the flight from Oregon to Region of Siem Reap?

Cheap Oregon to Region of Siem Reap flight deals and tips

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Why use momondo?

An easier way to manage your Region of 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 Siem Reap

Popular cities in Siem Reap

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

Oregon flight routes

According to popular flight searches on momondo this year

Region of Siem Reap flight routes

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

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According to popular flight searches on momondo this year