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Cheap Flight Deals from Portland to Koh Samui

Discover our range of affordable one-way and round-trip flights from Portland to Koh Samui and kick-start your next adventure today!

  • One way
  • Return
      • PDX07:54
        44h 36m
        2 stops
        USM18:30
        Tue, Apr 1|Portland - Koh Samui|United Airlines
        € 562€ 1,113
        49% OFF
        49% OFF
        € 1,113€ 562

        Choose United Airlines flights from Portland to Koh Samui. The one-way connecting flight with United Airlines departs from Portland International Airport on Tue, Apr 1, arriving at Samui International Airport. One-way Prices start from € 562 including taxes and charges.

      • PDX07:54
        33h 56m
        2 stops
        USM07:50
        Wed, Apr 2|Portland - Koh Samui|United Airlines
        € 596€ 1,113
        46% OFF
        46% OFF
        € 1,113€ 596

        Choose United Airlines flights from Portland to Koh Samui. The one-way connecting flight with United Airlines departs from Portland International Airport on Wed, Apr 2, arriving at Samui International Airport. One-way Prices start from € 596 including taxes and charges.

      • PDX15:25
        36h 50m
        2 stops
        USM18:15
        Thu, Apr 3|Portland - Koh Samui|Air Canada
        € 684€ 1,113
        39% OFF
        39% OFF
        € 1,113€ 684

        Choose Air Canada flights from Portland to Koh Samui. The one-way connecting flight with Air Canada departs from Portland International Airport on Thu, Apr 3, arriving at Samui International Airport. One-way Prices start from € 684 including taxes and charges.

      • PDX10:21
        44h 49m
        2 stops
        USM21:10
        Thu, Apr 3|Portland - Koh Samui|United Airlines
        € 719
        € 719

        Choose United Airlines flights from Portland to Koh Samui. The one-way connecting flight with United Airlines departs from Portland International Airport on Thu, Apr 3, arriving at Samui International Airport. One-way Prices start from € 719 including taxes and charges.

      • PDX07:21
        45h 14m
        2 stops
        USM18:35
        Wed, Apr 2|Portland - Koh Samui|Frontier Airlines
        € 723
        € 723

        Choose Frontier Airlines flights from Portland to Koh Samui. The one-way connecting flight with Frontier Airlines departs from Portland International Airport on Wed, Apr 2, arriving at Samui International Airport. One-way Prices start from € 723 including taxes and charges.

      • PDX06:00
        40h 5m
        2 stops
        USM13:05
        Thu, Feb 13|Portland - Koh Samui|United Airlines
        € 735
        € 735

        Choose United Airlines flights from Portland to Koh Samui. The one-way connecting flight with United Airlines departs from Portland International Airport on Thu, Feb 13, arriving at Samui International Airport. One-way Prices start from € 735 including taxes and charges.

      • PDX06:00
        25h 10m
        2 stops
        USM21:10
        Fri, Apr 4|Portland - Koh Samui|United Airlines
        € 783
        € 783

        Choose United Airlines flights from Portland to Koh Samui. The one-way connecting flight with United Airlines departs from Portland International Airport on Fri, Apr 4, arriving at Samui International Airport. One-way Prices start from € 783 including taxes and charges.

      • PDX07:00
        45h 35m
        2 stops
        USM18:35
        Wed, Apr 2|Portland - Koh Samui|Hawaiian Airlines
        € 791
        € 791

        Choose Hawaiian Airlines flights from Portland to Koh Samui. The one-way connecting flight with Hawaiian Airlines departs from Portland International Airport on Wed, Apr 2, arriving at Samui International Airport. One-way Prices start from € 791 including taxes and charges.

      • PDX07:05
        45h 30m
        2 stops
        USM18:35
        Wed, Apr 2|Portland - Koh Samui|Alaska Airlines
        € 792
        € 792

        Choose Alaska Airlines flights from Portland to Koh Samui. The one-way connecting flight with Alaska Airlines departs from Portland International Airport on Wed, Apr 2, arriving at Samui International Airport. One-way Prices start from € 792 including taxes and charges.

      • PDX19:05
        25h 5m
        2 stops
        USM10:10
        Wed, Apr 2|Portland - Koh Samui|Air Canada
        € 808
        € 808

        Choose Air Canada flights from Portland to Koh Samui. The one-way connecting flight with Air Canada departs from Portland International Airport on Wed, Apr 2, arriving at Samui International Airport. One-way Prices start from € 808 including taxes and charges.

      • PDX01:00 pm
        3h 5m
        Nonstop
        USM02:00 pm
        Thu, Feb 20|Portland - Koh Samui|United Airlines
        Find More Flights
        Find More Flights

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

Portland to Koh Samui Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA5574

    United Airlines

    06:00

    PDX

    1.9h

    07:55

    SFO

    SMT-TFS
    Search

  2. UA029

    United Airlines

    10:25

    SFO

    17.0h

    18:25

    SIN

    SMTWTFS

  3. TR640

    Scoot

    07:00

    SIN

    2.0h

    08:00

    USM

    SMTWTFS

  4. UA5429

    United Airlines

    15:54

    PDX

    1.9h

    17:50

    SFO

    SMTWT-S
    Search

  5. UA001

    United Airlines

    22:40

    SFO

    17.1h

    06:45

    SIN

    SMTWTFS

  6. PG968

    Bangkok Airways

    17:20

    SIN

    1.9h

    18:15

    USM

    SMTWTFS

  7. CX7853

    Cathay Pacific

    17:39

    PDX

    2.4h

    20:05

    LAX

    SMTWTFS
    Search

  8. CX883

    Cathay Pacific

    23:30

    LAX

    15.3h

    05:45

    HKG

    SMTWTFS

  9. CX6503

    Cathay Pacific

    17:05

    HKG

    3.5h

    19:35

    USM

    SMTWTFS

  10. AS278

    Alaska Airlines

    17:39

    PDX

    2.4h

    20:05

    LAX

    SMTWTFS
    Search

  11. CX883

    Cathay Pacific

    23:30

    LAX

    15.3h

    05:45

    HKG

    SMTWTFS

  12. CX6503

    Cathay Pacific

    17:05

    HKG

    3.5h

    19:35

    USM

    SMTWTFS

  13. CX7853

    Cathay Pacific

    17:39

    PDX

    2.4h

    20:05

    LAX

    SMTWTFS
    Search

  14. CX881

    Cathay Pacific

    00:30

    LAX

    15.3h

    06:45

    HKG

    SMTWTFS

  15. PG806

    Bangkok Airways

    16:15

    HKG

    3.3h

    18:35

    USM

    SMTWTFS

  16. AS1295

    Alaska Airlines

    17:50

    PDX

    1.8h

    19:40

    SFO

    SMTWTFS
    Search

  17. CX893

    Cathay Pacific

    00:35

    SFO

    15.3h

    06:55

    HKG

    SM-W-F-

  18. CX6503

    Cathay Pacific

    17:05

    HKG

    3.5h

    19:35

    USM

    SMTWTFS

  19. CX7861

    Cathay Pacific

    18:55

    PDX

    1.8h

    20:44

    SFO

    -MT-TFS
    Search

  20. CX873

    Cathay Pacific

    00:20

    SFO

    15.0h

    06:20

    HKG

    SMTWTFS

  21. PG806

    Bangkok Airways

    16:15

    HKG

    3.3h

    18:35

    USM

    SMTWTFS

  22. AC8655

    Air Canada

    19:05

    PDX

    1.3h

    20:24

    YVR

    S-TWTFS
    Search

  23. AC065

    Air Canada

    22:45

    YVR

    16.5h

    06:15

    BKK

    SMTWTFS

  24. PG125

    Bangkok Airways

    09:00

    BKK

    1.2h

    10:10

    USM

    SMTWTFS

  25. UA436

    United Airlines

    19:50

    PDX

    1.9h

    21:45

    SFO

    SMTWTFS
    Search

  26. UA877

    United Airlines

    23:05

    SFO

    14.9h

    05:00

    HKG

    SMTWTFS

  27. PG806

    Bangkok Airways

    16:15

    HKG

    3.3h

    18:35

    USM

    SMTWTFS

  28. AS2038

    Alaska Airlines

    21:52

    PDX

    1.8h

    23:41

    SFO

    SMTWTFS
    Search

  29. CX893

    Cathay Pacific

    00:35

    SFO

    15.3h

    06:55

    HKG

    SM-W-F-

  30. CX6503

    Cathay Pacific

    17:05

    HKG

    3.5h

    19:35

    USM

    SMTWTFS
Find more flights and airlines

Best Time to Book Flights from Portland to Koh Samui

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Koh Samui from Portland have changed and are set to move below.

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

FAQ

  • When are flight from Portland (PDX) to Koh Samui (USM) the cheapest?

    Airlines adjust prices for flights from Portland to Koh Samui based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much are flights from Portland (PDX) to Koh Samui (USM) cost?

    According to Trip.com's data, the lowest price is around € 1,856.

  • What is the transportation method from the main airport to downtown in Koh Samui?

    • The distance from Samui International Airport to downtown is about 3km, by taxi about 20 minutes.

  • How many airports in Koh Samui (USM)?

    There are 1 airport(s) in Koh Samui (USM): Samui International Airport.

How to find a cheap flight from Portland to Koh Samui

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.
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 Portland to Koh Samui

Off-season for travelJanuary
Peak season for travelDecember
Flight distance12,552.9km
Popular airlineAmerican Airlines

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