Cheap Flights from Portland to Siem Reap
No deal from Portland to Siem Reap has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from Portland to Siem Reap, the lowest round-trip fare we recorded was $1057, in August. The typical fare was $1150. August was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $1218 on Alaska, Cathay Pacific, and Bangkok Airways, seen Oct 27. It is an unverified observation and may have changed.
See every deal <a href="/from/portland">from Portland</a>, <a href="/to/siem-reap">to Siem Reap</a>, or the return direction <a href="/from/siem-reap/to/portland">Siem Reap to Portland</a>.
Latest price we saw: Portland to Siem Reap
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Portland (PDX) to Siem Reap (SAI) | $1218 | 8.2¢ | Nov 2 – Nov 8 | Alaska, Cathay Pacific, and Bangkok Airways | Oct 27 | Check price |
Price history: Portland to Siem Reap
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $1104 | $1244 | 30 |
| Sep 2026 | $1062 | $1086 | 36 |
| Aug 2026 | $1057 | $1164 | 50 |
| Jul 2026 | $1106 | $1106 | 2 |
Frequently asked questions
How many flight deals from Portland to Siem Reap are on Sparkflights right now?
There are 0 verified deals from Portland to Siem Reap on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Portland to Siem Reap?
The lowest fare we've recorded from Portland to Siem Reap is $1057, based on 118 price observations over 4 months.
How much does a flight from Portland to Siem Reap cost?
The typical round-trip fare we observed from Portland to Siem Reap is $1150, against a recorded low of $1057. These are observations, not quotes.
When is the cheapest month to fly Portland to Siem Reap?
August was the cheapest month we observed from Portland to Siem Reap and July the dearest, over 4 months of data.
What is the current price from Portland to Siem Reap?
The most recent fare our sweep saw from Portland to Siem Reap is $1218, on Oct 27. It is an unverified observation rather than a verified deal, so check it before booking.