Which airports can I use when flying from Seattle to Phnom Penh?

Flights from Seattle to Phnom Penh usually depart from Seattle/Tacoma Intl (SEA) and arrive at Phnom Penh Techo Intl (KTI).

What cabin classes can I book on flights from Seattle to Phnom Penh?

Four cabin classes are available on flights from Seattle to Phnom Penh: • Economy Class • Premium Economy Class • Business Class • First Class Prices vary by airline.

Which airports do connecting flights from Seattle to Phnom Penh pass through?

One-stop flights from Seattle to Phnom Penh most commonly connect through: • Incheon Intl (ICN) - 46% of one-stop connections • Taipei City Taiwan Taoyuan Intl (TPE) - 38% of one-stop connections • Singapore Changi (SIN) - 14% of one-stop connections • Hong Kong Intl (HKG) - 1% of one-stop connections

Can I save money by using flexible dates for flights from Seattle to Phnom Penh?

Yes. Flexible dates can save you up to 24% on flights from Seattle to Phnom Penh. Sunday is the cheapest departure day at $929 round-trip on average, while Thursday is the most expensive at $1,218, a difference of $289. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

How expensive are last-minute Seattle to Phnom Penh flights?

Last-minute fares on this route (booked within two weeks of departure) run 27% above the $1,066 route average. Book 9 weeks before departure for the lowest fares.

How long is a flight from Seattle to Phnom Penh?

A nonstop flight from Seattle to Phnom Penh takes 00m, covering 7,440 miles.

Do I need a passport to fly from Seattle to Phnom Penh?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from Seattle to Phnom Penh looking right now?

One-way fares from Seattle to Phnom Penh are currently higher than usual. Average one-way flight prices are about $676, which is 31% above the typical average for this route.

How much time can I save by choosing a different layover airport from Seattle to Phnom Penh?

Flying via Taipei City Taiwan Taoyuan Intl (TPE) gives the shortest average 1-stop total travel time at 20h 18m, compared with 26h 04m via Incheon Intl (ICN) and 31h 40m via Hong Kong Intl (HKG).

What is the time difference between Seattle and Phnom Penh?

Phnom Penh is 14 hours ahead of Seattle (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

How much should I expect to pay for a Seattle to Phnom Penh flight?

Round-trip flights from Seattle to Phnom Penh range from $827 to $1,338, with an average of $1,066 over the past 12 months. Anything below $827 counts as a good deal.

How much is a round-trip flight from Seattle to Phnom Penh?

Round-trip flights from Seattle to Phnom Penh typically range from $827 to $1,338. The lowest price found in the past 5 days was $584, on Singapore Airlines.

What's the cheapest day of the week to fly from Seattle to Phnom Penh?

Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Seattle to Phnom Penh. It’s 13% cheaper than the average day, while Thursday is the most expensive, with prices 14% higher.

What’s the cheapest month to fly from Seattle to Phnom Penh?

•April is the cheapest month to fly from Seattle to Phnom Penh at $854 round-trip. •December ($1,397) and July ($1,182) are the most expensive months. •The price difference between flying in the cheapest and most expensive months is 63% on average. This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Phnom Penh the cheapest?

Flights from Seattle to Phnom Penh are cheapest 9 weeks before departure. Booking in this window typically costs about 37% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Which airline is the cheapest to fly from Seattle to Phnom Penh?

Singapore Airlines ($584) and Cathay Pacific ($823) are the cheapest airlines to fly round-trip from Seattle to Phnom Penh according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from Seattle to Phnom Penh?

Incheon Intl (ICN) is the most popular layover for the Seattle to Phnom Penh route. 46% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via ICN.

What is the cheapest layover airport when flying from Seattle to Phnom Penh?

Flights via Incheon Intl (ICN) offer the most affordable fares, with an average round-trip price of $934. Based on KAYAK data over the past 3 months.

When flying from Seattle to Phnom Penh which airport offers the shortest layover?

Taipei City Taiwan Taoyuan Intl (TPE) had the shortest average connection time for Seattle to Phnom Penh layovers at 12h 12m over the past 3 months.

$408 CHEAP FLIGHTS from Seattle to Phnom Penh (SEA - KTI)

Save 19% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$584

Typical prices: $827-$1,338

Singapore Airlines

Mon 1/15Mon 1/22

SEA - KTI • 1 stop

Cheapest one-way

$408

Typical prices: $397-$661

Cathay Pacific

Fri 2/9

SEA - KTI • 1 stop

Nonstop flights

Not available

There are currently no direct flights between Seattle and Phnom Penh. You'll need to take a connecting flight to reach the destination.

Insights

When to book

9 weeks

in advance

Our data shows that travelers who book at least 9 weeks in advance save around 37% compared to booking last minute.

Insights

When to travel

April

Cheapest • 20% price drop

July

Most popular

Good to know

Top layover airports

Incheon Intl (ICN)

Cheapest • Avg $934 (round-trip)

Taipei City Taiwan Taoyuan Intl (TPE)

Shortest trip • 20h 18m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Phnom Penh!

Flight Deals

Cheap Flights from Seattle to Phnom Penh (SEA-KTI)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Seattle to Phnom Penh

Fri, Jan 15 - Fri, Jan 22

8:40 am - 1:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

38h 05m1 stop Singapore Changi

9:35 am - 7:05 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

36h 30m1 stop Singapore Changi

$584Singapore Airlines

Wed, Jan 13 - Fri, Jan 29

8:40 am - 8:35 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

32h 55m1 stop Singapore Changi

2:40 pm - 7:05 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

31h 25m1 stop Singapore Changi

$584Singapore Airlines

Tue, Apr 6 - Tue, Apr 20

11:45 am - 5:15 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

39h 30m1 stop Hong Kong Intl

6:30 pm - 10:05 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

29h 35m1 stop Hong Kong Intl

$823Cathay Pacific

Wed, Mar 10 - Sun, Mar 21

10:25 am - 5:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

40h 20m1 stop Hong Kong Intl

7:05 pm - 9:45 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

28h 40m1 stop Hong Kong Intl

$823Cathay Pacific

Thu, Nov 26 - Thu, Dec 24

3:40 pm - 6:55 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

36h 15m2 stops Tokyo Haneda Bangkok Suvarnabhumi

1:30 am - 6:45 pmKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

32h 15m1 stop Manila Ninoy Aquino Intl

$860Multiple Airlines

Sun, Jan 3 - Sun, Jan 17

10:28 pm - 10:25 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

44h 57m2 stops Los Angeles Hong Kong Intl

7:05 pm - 8:45 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

28h 40m1 stop Hong Kong Intl

$874Multiple Airlines

Thu, Nov 5 - Wed, Nov 18

12:30 pm - 10:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

19h 15m1 stop Incheon Intl

12:10 am - 11:51 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

26h 41m1 stop Incheon Intl

$930Delta

Mon, Nov 2 - Wed, Nov 18

12:30 pm - 10:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

19h 15m1 stop Incheon Intl

12:10 am - 11:51 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

26h 41m1 stop Incheon Intl

$930Delta

Sun, Nov 8 - Wed, Nov 18

12:10 am - 10:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

31h 35m1 stop Incheon Intl

12:10 am - 2:10 pmKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

29h 00m1 stop Incheon Intl

$933Korean Air

Mon, Nov 16 - Tue, Nov 24

11:00 am - 10:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

20h 45m1 stop Incheon Intl

12:10 am - 9:05 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

23h 55m1 stop Incheon Intl

$933Korean Air

Recent last minute flight deals from Seattle to Phnom Penh

Wed, Oct 14 - Sun, Dec 6

11:45 am - 10:15 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

32h 30m1 stop Hong Kong Intl

7:05 pm - 8:45 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

28h 40m1 stop Hong Kong Intl

$912Cathay Pacific

Wed, Oct 14 - Wed, Dec 2

11:45 am - 10:15 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

32h 30m1 stop Hong Kong Intl

11:45 am - 8:45 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

36h 00m1 stop Hong Kong Intl

$936Cathay Pacific

Thu, Oct 15 - Sat, Dec 5

10:07 am - 10:15 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

34h 08m2 stops Los Angeles Hong Kong Intl

7:05 pm - 7:06 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

27h 01m2 stops Hong Kong Intl Vancouver Intl

$1,005Multiple Airlines

Wed, Oct 14 - Sat, Dec 5

10:07 am - 10:15 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

34h 08m2 stops Los Angeles Hong Kong Intl

7:05 pm - 7:06 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

27h 01m2 stops Hong Kong Intl Vancouver Intl

$1,005Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

9:55 am - 8:40 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

32h 45m1 stop Singapore Changi

2:40 pm - 8:25 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

31h 45m1 stop Singapore Changi

$1,135Singapore Airlines

Sat, Oct 10 - Wed, Oct 14

9:55 am - 5:40 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

41h 45m1 stop Singapore Changi

6:55 pm - 8:25 amKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

27h 30m1 stop Singapore Changi

$1,135Singapore Airlines

Tue, Oct 13 - Sat, Dec 5

12:30 am - 11:15 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

12:45 pm - 5:30 pmKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

19h 45m1 stop Taipei City Taiwan Taoyuan Intl

$1,253EVA Air

Tue, Oct 13 - Thu, Dec 3

12:30 am - 11:15 amSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

12:45 pm - 6:10 pmKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

20h 25m1 stop Taipei City Taiwan Taoyuan Intl

$1,271EVA Air

Sun, Oct 11 - Sat, Dec 5

11:10 pm - 11:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

34h 35m1 stop Manila Ninoy Aquino Intl

1:30 am - 6:45 pmKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

32h 15m1 stop Manila Ninoy Aquino Intl

$1,315Philippine Airlines

Tue, Oct 13 - Tue, Dec 1

11:10 pm - 11:45 pmSEA Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl

34h 35m1 stop Manila Ninoy Aquino Intl

1:30 am - 6:45 pmKTI Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl

32h 15m1 stop Manila Ninoy Aquino Intl

$1,315Philippine Airlines

Booking Insights

Price, demand and travel trends for Seattle to Phnom Penh flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Seattle to Phnom Penh? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Phnom Penh departing in january.
What's the cheapest day of the week to fly from Seattle to Phnom Penh?: Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Seattle to Phnom Penh. It’s 13% cheaper than the average day, while Thursday is the most expensive, with prices 14% higher.
What’s the cheapest month to fly from Seattle to Phnom Penh? KAYAK internal proprietary data takes all prices for each month over the last 12 months for round-trip flights from Seattle to Phnom Penh, removes the top 0.1% to account for outliers and then takes the median of all values for each month.: •April is the cheapest month to fly from Seattle to Phnom Penh at $854 round-trip.
•December ($1,397) and July ($1,182) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 63% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.
When are flights from Seattle to Phnom Penh the cheapest?: Flights from Seattle to Phnom Penh are cheapest 9 weeks before departure. Booking in this window typically costs about 37% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Low season	February
High season	July
Cheapest flight	$408

Beat the crowds with an average 49% drop in travelers.

The most popular month to fly with an average 69% increase in travelers.

One-way flight from Seattle to Phnom Penh

When to book flights from Seattle to Phnom Penh

Are your dates flexible? Find out the best times to travel from Seattle to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Seattle to Phnom Penh?
Four cabin classes are available on flights from Seattle to Phnom Penh:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.
How long is a flight from Seattle to Phnom Penh?
A nonstop flight from Seattle to Phnom Penh takes 00m, covering 7,440 miles.
Do I need a passport to fly from Seattle to Phnom Penh?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Seattle to Phnom Penh flight?
Round-trip flights from Seattle to Phnom Penh range from $827 to $1,338, with an average of $1,066 over the past 12 months. Anything below $827 counts as a good deal.
How expensive are last-minute Seattle to Phnom Penh flights?
Last-minute fares on this route (booked within two weeks of departure) run 27% above the $1,066 route average. Book 9 weeks before departure for the lowest fares.
How are flight prices from Seattle to Phnom Penh looking right now?
One-way fares from Seattle to Phnom Penh are currently higher than usual. Average one-way flight prices are about $676, which is 31% above the typical average for this route.
Which airports can I use when flying from Seattle to Phnom Penh?
Flights from Seattle to Phnom Penh usually depart from Seattle/Tacoma Intl (SEA) and arrive at Phnom Penh Techo Intl (KTI).
Which airports do connecting flights from Seattle to Phnom Penh pass through?
One-stop flights from Seattle to Phnom Penh most commonly connect through:

• Incheon Intl (ICN) - 46% of one-stop connections
• Taipei City Taiwan Taoyuan Intl (TPE) - 38% of one-stop connections
• Singapore Changi (SIN) - 14% of one-stop connections
• Hong Kong Intl (HKG) - 1% of one-stop connections
Can I save money by using flexible dates for flights from Seattle to Phnom Penh?
Yes. Flexible dates can save you up to 24% on flights from Seattle to Phnom Penh. Sunday is the cheapest departure day at $929 round-trip on average, while Thursday is the most expensive at $1,218, a difference of $289.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How much time can I save by choosing a different layover airport from Seattle to Phnom Penh?
Flying via Taipei City Taiwan Taoyuan Intl (TPE) gives the shortest average 1-stop total travel time at 20h 18m, compared with 26h 04m via Incheon Intl (ICN) and 31h 40m via Hong Kong Intl (HKG).
What is the time difference between Seattle and Phnom Penh?
Phnom Penh is 14 hours ahead of Seattle (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Sunday departure and avoid flying on Thursday. On this route, Sunday flights average $929, about $289 less than Thursday fares (24% savings) based on the last 12 months.
For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 37% versus last-minute pricing (KAYAK booking data, last 12 months).
If you can choose when to travel, plan your Seattle to Phnom Penh trip for April. Fares historically average $854 round-trip in that month - typically $543 less than the most expensive month, which is December (based on the last 12 months).

More options for your flight from Seattle to Phnom Penh

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Phnom Penh with a hotel stay or car rental

Car rentals in Phnom Penh

Hotels in Phnom Penh

Vacations in Phnom Penh

SEA - KTI

$408 Find Cheap Flights from Seattle to Phnom Penh - Compare and Save

Everything you should know

Cheap Flights from Seattle to Phnom Penh (SEA-KTI)

Recent round-trip flight deals from Seattle to Phnom Penh

Recent one-way flight deals from Seattle to Phnom Penh

Recent last minute flight deals from Seattle to Phnom Penh

Price, demand and travel trends for Seattle to Phnom Penh flights

How much is a round-trip flight from Seattle to Phnom Penh?

What's the cheapest day of the week to fly from Seattle to Phnom Penh?

What’s the cheapest month to fly from Seattle to Phnom Penh?

When are flights from Seattle to Phnom Penh the cheapest?

Which airline is the cheapest to fly from Seattle to Phnom Penh?

What’s the most popular layover airport when flying from Seattle to Phnom Penh?

What is the cheapest layover airport when flying from Seattle to Phnom Penh?

When flying from Seattle to Phnom Penh which airport offers the shortest layover?

Key details for Seattle to Phnom Penh flights

Low season

High season

Cheapest flight

When to book flights from Seattle to Phnom Penh

Your Seattle to Phnom Penh flight questions, answered

Your guide to booking Seattle to Phnom Penh flights

More options for your flight from Seattle to Phnom Penh

Complete your trip to Phnom Penh with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Seattle to Phnom Penh

Find direct flights to and from Seattle and Phnom Penh

Flights from domestic origins to Phnom Penh

Flights to other popular destinations

Find deals for your return flight