App
Customer Support
USD
Find Bookings
Trip.com
>
Cheap Flights
>
Cambodia
>
Phnom Penh
>
Flights from Seattle to Phnom Penh
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Seattle to Phnom Penh Starting at US$435

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • SEA11:00
        20h 25m
        1 stop
        PNH22:25
        Sat, Feb 22|Seattle - Phnom Penh|Korean Air
        US$435US$605
        28% OFF
        28% OFF
        US$605US$435

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Sat, Feb 22, arriving at Phnom Penh International Airport. One-way Prices start from US$435 including taxes and charges.

      • SEA12:50
        19h 20m
        1 stop
        PNH22:10
        Tue, Apr 8|Seattle - Phnom Penh|Korean Air
        US$440US$605
        27% OFF
        27% OFF
        US$605US$440

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Tue, Apr 8, arriving at Phnom Penh International Airport. One-way Prices start from US$440 including taxes and charges.

      • SEA12:00
        20h 25m
        1 stop
        PNH22:25
        Sun, Mar 16|Seattle - Phnom Penh|Korean Air
        US$441US$605
        27% OFF
        27% OFF
        US$605US$441

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Sun, Mar 16, arriving at Phnom Penh International Airport. One-way Prices start from US$441 including taxes and charges.

      • SEA12:00
        20h 25m
        1 stop
        PNH22:25
        Fri, Mar 28|Seattle - Phnom Penh|Korean Air
        US$441
        US$441

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Fri, Mar 28, arriving at Phnom Penh International Airport. One-way Prices start from US$441 including taxes and charges.

      • SEA12:50
        19h 20m
        1 stop
        PNH22:10
        Fri, Apr 18|Seattle - Phnom Penh|Korean Air
        US$442
        US$442

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Fri, Apr 18, arriving at Phnom Penh International Airport. One-way Prices start from US$442 including taxes and charges.

      • SEA12:00
        20h 25m
        1 stop
        PNH22:25
        Sun, Mar 23|Seattle - Phnom Penh|Korean Air
        US$442
        US$442

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Sun, Mar 23, arriving at Phnom Penh International Airport. One-way Prices start from US$442 including taxes and charges.

      • SEA12:00
        20h 25m
        1 stop
        PNH22:25
        Wed, Mar 26|Seattle - Phnom Penh|Korean Air
        US$443
        US$443

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Wed, Mar 26, arriving at Phnom Penh International Airport. One-way Prices start from US$443 including taxes and charges.

      • SEA12:00
        20h 25m
        1 stop
        PNH22:25
        Thu, Mar 27|Seattle - Phnom Penh|Korean Air
        US$444
        US$444

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Thu, Mar 27, arriving at Phnom Penh International Airport. One-way Prices start from US$444 including taxes and charges.

      • SEA13:45
        19h 35m
        1 stop
        PNH23:20
        Wed, Mar 26|Seattle - Phnom Penh|Asiana Airlines
        US$445
        US$445

        Choose Asiana Airlines flights from Seattle to Phnom Penh. The one-way connecting flight with Asiana Airlines departs from Seattle-Tacoma International Airport on Wed, Mar 26, arriving at Phnom Penh International Airport. One-way Prices start from US$445 including taxes and charges.

      • SEA12:00
        20h 25m
        1 stop
        PNH22:25
        Tue, Mar 25|Seattle - Phnom Penh|Korean Air
        US$446
        US$446

        Choose Korean Air flights from Seattle to Phnom Penh. The one-way connecting flight with Korean Air departs from Seattle-Tacoma International Airport on Tue, Mar 25, arriving at Phnom Penh International Airport. One-way Prices start from US$446 including taxes and charges.

      • SEA01:00 pm
        3h 5m
        Nonstop
        PNH02:00 pm
        Fri, Feb 28|Seattle - Phnom Penh|Korean Air
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Seattle to Phnom Penh flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. BR023

    EVA Air

    00:50

    SEA

    12.3h

    04:10

    TPE

    -M-W-F-
    Search

  2. BR395

    EVA Air

    07:40

    TPE

    3.4h

    10:05

    SGN

    SMTWTFS

  3. KT601

    AirAsia Cambodia

    13:25

    SGN

    0.8h

    14:15

    PNH

    S-T-T-S

  4. AA6420

    American Airlines

    06:03

    SEA

    2.9h

    08:55

    LAX

    SMTWTFS
    Search

  5. MU586

    China Eastern Airlines

    11:30

    LAX

    14.3h

    17:45

    PVG

    SMTWTFS

  6. MU759

    China Eastern Airlines

    19:20

    PVG

    4.9h

    23:15

    PNH

    SMTWTFS

  7. KE3083

    Korean Air

    06:15

    SEA

    2.2h

    08:29

    SFO

    SMTWTFS
    Search

  8. KE024

    Korean Air

    12:40

    SFO

    12.7h

    17:20

    ICN

    SMTWTFS

  9. KE689

    Korean Air

    18:30

    ICN

    5.9h

    22:25

    PNH

    SMTWTFS

  10. AS965

    Alaska Airlines

    07:00

    SEA

    2.2h

    09:12

    SFO

    -----F-
    Search

  11. KE024

    Korean Air

    12:40

    SFO

    12.7h

    17:20

    ICN

    SMTWTFS

  12. KE689

    Korean Air

    18:30

    ICN

    5.9h

    22:25

    PNH

    SMTWTFS

  13. UA1403

    United Airlines

    07:00

    SEA

    2.2h

    09:13

    SFO

    SMTWTFS
    Search

  14. UA893

    United Airlines

    10:30

    SFO

    12.5h

    15:00

    ICN

    SMTWTFS

  15. KE689

    Korean Air

    18:30

    ICN

    5.9h

    22:25

    PNH

    SMTWTFS

  16. AS3369

    Alaska Airlines

    08:00

    SEA

    2.2h

    10:14

    SFO

    SMTWTFS
    Search

  17. OZ215

    Asiana Airlines

    12:50

    SFO

    12.8h

    17:40

    ICN

    S-T-T--

  18. OZ739

    Asiana Airlines

    19:35

    ICN

    5.8h

    23:20

    PNH

    SMTWTFS

  19. DL197

    Delta Air Lines

    12:50

    SEA

    11.7h

    16:30

    ICN

    SMTWTFS
    Search

  20. KE689

    Korean Air

    18:30

    ICN

    5.9h

    22:25

    PNH

    SMTWTFS

  21. KE042

    Korean Air

    12:50

    SEA

    11.8h

    16:40

    ICN

    SMTWTFS
    Search

  22. KE689

    Korean Air

    18:30

    ICN

    5.9h

    22:25

    PNH

    SMTWTFS

  23. OZ271

    Asiana Airlines

    14:15

    SEA

    11.7h

    17:55

    ICN

    SMTWTFS
    Search

  24. OZ739

    Asiana Airlines

    19:35

    ICN

    5.8h

    23:20

    PNH

    SMTWTFS

  25. PR125

    Philippine Airlines

    23:30

    SEA

    13.5h

    04:00

    MNL

    --T-T-S
    Search

  26. PR597

    Philippine Airlines

    12:50

    MNL

    2.7h

    14:30

    SGN

    --T-T-S

  27. K6819

    Air Cambodia

    18:30

    SGN

    1.2h

    19:40

    PNH

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Seattle to Phnom Penh

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from Seattle to Phnom Penh

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
EVA Air logoEVA AirAsiana Airlines logoAsiana AirlinesKorean Air logoKorean AirDelta Air Lines logoDelta Air LinesChina Airlines logoChina Airlines

FAQ

  • When are flight tickets from Seattle (SEA) to Phnom Penh (PNH) the cheapest?

    Airlines adjust prices for flights from Seattle to Phnom Penh based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Seattle (SEA) to Phnom Penh (PNH) cost?

    According to Trip.com's data, the lowest price is around $1,055.

  • What is the transportation method from the main airport to downtown in Phnom Penh?

    • The distance from Phnom Penh International Airport to downtown is about 7 km. It takes about 20 minutes by taxi.

How to find a cheap flight from Seattle to Phnom Penh

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Phnom Penh. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Seattle to Phnom Penh

Cheapest nonstop flight price$435
Off-season for travelMarch
Peak season for travelNovember
Flight distance11,969.96 km
Popular airlineEVA Air

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.