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Flights from Ontario to Koh Samui Starting at US$587

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

  • One way
  • Round-trip
      • ONT00:10
        41h 10m
        2 stops
        USM07:20
        Wed, Apr 16|Ontario - Koh Samui|China Airlines
        US$587US$710
        17% OFF
        17% OFF
        US$710US$587

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Wed, Apr 16, arriving at Samui International Airport. One-way Prices start from US$587 including taxes and charges.

      • ONT00:10
        41h 10m
        2 stops
        USM07:20
        Mon, Apr 28|Ontario - Koh Samui|China Airlines
        US$593US$710
        17% OFF
        17% OFF
        US$710US$593

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Mon, Apr 28, arriving at Samui International Airport. One-way Prices start from US$593 including taxes and charges.

      • ONT00:10
        41h 10m
        2 stops
        USM07:20
        Tue, Apr 15|Ontario - Koh Samui|China Airlines
        US$607US$710
        15% OFF
        15% OFF
        US$710US$607

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Tue, Apr 15, arriving at Samui International Airport. One-way Prices start from US$607 including taxes and charges.

      • ONT22:45
        42h 15m
        2 stops
        USM08:00
        Thu, Mar 6|Ontario - Koh Samui|China Airlines
        US$627
        US$627

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Thu, Mar 6, arriving at Samui International Airport. One-way Prices start from US$627 including taxes and charges.

      • ONT22:45
        31h
        2 stops
        USM20:45
        Mon, Feb 24|Ontario - Koh Samui|China Airlines
        US$629
        US$629

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Mon, Feb 24, arriving at Samui International Airport. One-way Prices start from US$629 including taxes and charges.

      • ONT22:45
        31h 25m
        2 stops
        USM21:10
        Thu, Feb 20|Ontario - Koh Samui|China Airlines
        US$630
        US$630

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Thu, Feb 20, arriving at Samui International Airport. One-way Prices start from US$630 including taxes and charges.

      • ONT06:00
        35h
        2 stops
        USM08:00
        Mon, Feb 24|Ontario - Koh Samui|United Airlines
        US$634
        US$634

        Choose United Airlines flights from Ontario to Koh Samui. The one-way connecting flight with United Airlines departs from Ontario International Airport on Mon, Feb 24, arriving at Samui International Airport. One-way Prices start from US$634 including taxes and charges.

      • ONT00:10
        41h 10m
        2 stops
        USM07:20
        Tue, Apr 1|Ontario - Koh Samui|China Airlines
        US$634
        US$634

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Tue, Apr 1, arriving at Samui International Airport. One-way Prices start from US$634 including taxes and charges.

      • ONT06:00
        35h
        2 stops
        USM08:00
        Sun, Mar 2|Ontario - Koh Samui|United Airlines
        US$636
        US$636

        Choose United Airlines flights from Ontario to Koh Samui. The one-way connecting flight with United Airlines departs from Ontario International Airport on Sun, Mar 2, arriving at Samui International Airport. One-way Prices start from US$636 including taxes and charges.

      • ONT23:45
        31h
        2 stops
        USM20:45
        Mon, Mar 24|Ontario - Koh Samui|China Airlines
        US$640
        US$640

        Choose China Airlines flights from Ontario to Koh Samui. The one-way connecting flight with China Airlines departs from Ontario International Airport on Mon, Mar 24, arriving at Samui International Airport. One-way Prices start from US$640 including taxes and charges.

      • ONT01:00 pm
        3h 5m
        Nonstop
        USM02:00 pm
        Thu, Feb 27|Ontario - Koh Samui|China Airlines
        Find More Flights
        Find More Flights

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

Los Angeles to Koh Samui flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  2. CI831

    China Airlines

    09:25

    TPE

    3.8h

    12:10

    BKK

    SMTWTFS

  3. PG193

    Bangkok Airways

    20:05

    BKK

    1.5h

    21:35

    USM

    SMTWTFS

  4. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  5. CI831

    China Airlines

    09:25

    TPE

    3.8h

    12:10

    BKK

    SMTWTFS

  6. PG185

    Bangkok Airways

    19:30

    BKK

    1.5h

    21:00

    USM

    SMTWTFS

  7. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  8. CI833

    China Airlines

    07:00

    TPE

    3.8h

    09:45

    BKK

    SMTWTFS

  9. PG191

    Bangkok Airways

    19:35

    BKK

    1.2h

    20:45

    USM

    SMTWTFS

  10. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  11. CI831

    China Airlines

    09:25

    TPE

    3.8h

    12:10

    BKK

    SMTWTFS

  12. PG191

    Bangkok Airways

    19:35

    BKK

    1.2h

    20:45

    USM

    SMTWTFS

  13. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  14. CI833

    China Airlines

    07:00

    TPE

    3.8h

    09:45

    BKK

    SMTWTFS

  15. PG455

    Bangkok Airways

    18:15

    DMK

    1.5h

    19:45

    USM

    SMTWTFS

  16. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  17. CI831

    China Airlines

    09:25

    TPE

    3.8h

    12:10

    BKK

    SMTWTFS

  18. PG455

    Bangkok Airways

    18:15

    DMK

    1.5h

    19:45

    USM

    SMTWTFS

  19. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  20. CI833

    China Airlines

    07:00

    TPE

    3.8h

    09:45

    BKK

    SMTWTFS

  21. PG1171

    Bangkok Airways

    16:45

    BKK

    1.6h

    18:20

    USM

    S-TWTFS

  22. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  23. CI833

    China Airlines

    07:00

    TPE

    3.8h

    09:45

    BKK

    SMTWTFS

  24. PG151

    Bangkok Airways

    14:40

    BKK

    1.1h

    15:45

    USM

    SMTWTFS

  25. CI023

    China Airlines

    00:10

    ONT

    14.1h

    05:15

    TPE

    SMTWTFS
    Search

  26. CI833

    China Airlines

    07:00

    TPE

    3.8h

    09:45

    BKK

    SMTWTFS

  27. PG145

    Bangkok Airways

    13:40

    BKK

    1.1h

    14:45

    USM

    SMTWTFS

  28. UA277

    United Airlines

    06:00

    ONT

    1.4h

    07:27

    SFO

    SMTWTFS
    Search

  29. UA029

    United Airlines

    10:25

    SFO

    17.0h

    18:25

    SIN

    SMTWTFS

  30. TR640

    Scoot

    07:00

    SIN

    2.0h

    08:00

    USM

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Ontario to Koh Samui

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.

FAQ

  • When are flight tickets from Ontario (ONT) to Koh Samui (USM) the cheapest?

    Airlines adjust prices for flights from Ontario to Koh Samui 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 Ontario (ONT) to Koh Samui (USM) cost?

    According to Trip.com's data, the lowest price is around $858.

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

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

How to find a cheap flight from Ontario to Koh Samui

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 Ontario to Koh Samui. 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 Ontario to Koh Samui

Flight distance11,110.78 km
Popular airlineChina Airlines

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