$354 Cheap flight deals from Seattle (SEA) to Siem Reap (SAI)

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Airfares from $354 One Way, $625 Round Trip from Seattle to Siem Reap

Prices starting at $625 for return flights and $354 for one-way flights to Siem Reap were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 30 - Mon, Feb 15
SEA
Seattle
SAI
Siem Reap
$625 Roundtrip, found 5 hours ago
$625
Roundtrip
found 5 hours ago
Select Singapore Airlines flight, departing Sat, Jan 30 from Seattle to Siem Reap, returning Mon, Feb 15, priced at $625 found 5 hours ago
Sat, Jan 30 - Mon, Feb 15
SEA
Seattle
SAI
Siem Reap
$643 Roundtrip, found 5 hours ago
$643
Roundtrip
found 5 hours ago
Select Singapore Airlines flight, departing Sat, Jan 30 from Seattle to Siem Reap, returning Mon, Feb 15, priced at $643 found 5 hours ago
Sat, Jan 30 - Mon, Feb 15
SEA
Seattle
SAI
Siem Reap
$696 Roundtrip, found 5 hours ago
$696
Roundtrip
found 5 hours ago
Select Singapore Airlines flight, departing Sat, Jan 30 from Seattle to Siem Reap, returning Mon, Feb 15, priced at $696 found 5 hours ago
Sat, Jan 30 - Mon, Feb 15
SEA
Seattle
SAI
Siem Reap
$714 Roundtrip, found 5 hours ago
$714
Roundtrip
found 5 hours ago
Select Singapore Airlines flight, departing Sat, Jan 30 from Seattle to Siem Reap, returning Mon, Feb 15, priced at $714 found 5 hours ago
Tue, Jan 26 - Tue, Feb 16
SEA
Seattle
SAI
Siem Reap
$909 Roundtrip, found 3 days ago
$909
Roundtrip
found 3 days ago
Select Singapore Airlines flight, departing Tue, Jan 26 from Seattle to Siem Reap, returning Tue, Feb 16, priced at $909 found 3 days ago

Siem Reap economy flight packages

Price found within the past 48 hours. Click for updated prices.
Saem Siemreap Hotel
4.0-star property

Saem Siemreap Hotel

9.8/10 Exceptional! (1,003 reviews)

Nov 17 - Nov 23

6 night stay

Seattle (SEA) to Siem Reap Angkor Intl. Airport (SAI)

United • Coach

Siem Reap Angkor Intl. Airport (SAI) to Seattle (SEA)

Bangkok Airways • Coach
Price was $1,725, price is now $1,252 per person
$1,252
per person
found 11 hours ago
Beautiful hotel and staff was excellent. Rooms were very clean and breakfast was delicious

Reviewed on Oct 14, 2026

Royal Crown Hotel & Spa
4.5-star property

Royal Crown Hotel & Spa

9/10 Wonderful! (1,000 reviews)

Nov 17 - Nov 23

6 night stay

Seattle (SEA) to Siem Reap Angkor Intl. Airport (SAI)

United • Coach

Siem Reap Angkor Intl. Airport (SAI) to Seattle (SEA)

Bangkok Airways • Coach
Price was $2,506, price is now $1,452 per person
$1,452
per person
found 11 hours ago
The hotel is at a good location. The building is kept/mantained but you notice the age. The hotel has many staf members, and everyone does their job. But what makes this hotel great is the service you get in the lobby. The frontdesk and the 2 bell boys and sometime bell girls. They are all wonderfull. So friendly, caring, helpfull and profesional. Their way of giving service to the guests is why i gave a high score. They stand out. Don't misunderstand me, the other staf are friendly just like you would expect from any hotel. But the lobby personal, they are another leven. They left an impresation. From the young ones to the older woman managing the frontdesk personel.

Reviewed on Oct 9, 2026

Raffles Grand Hotel d'Angkor
5.0-star property

Raffles Grand Hotel d'Angkor

9.6/10 Exceptional! (334 reviews)

Nov 17 - Nov 23

6 night stay

Seattle (SEA) to Siem Reap Angkor Intl. Airport (SAI)

United • Coach

Siem Reap Angkor Intl. Airport (SAI) to Seattle (SEA)

Bangkok Airways • Coach
Save 100% on your flight
Price was $6,056, price is now $4,204 per person
$4,204
per person
found 11 hours ago

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More About Flying To Siem Reap from Seattle

Route Information for Flights from Seattle to Siem Reap

Origin Airport IATA Code
SEA
Destination Airport IATA Code
SAI
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Seattle to Siem Reap

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Frequently asked questions

What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.