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Ko Samui

$601+ Cheap flights from Riverside, CA to Ko Samui (USM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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Cheap flight deals from Riverside to Ko Samui

Keep the following information in mind while searching for Riverside to Ko Samui flight deals. Data was last updated April 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,090
(Gurufare)

One-way from

$671
(SmartFares)

Popular in

December

Cheapest in

April

Average price

$1,071
Provider with most accurate pricing for Los Angeles-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Ko Samui flights.
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From Riverside to Ko Samui
Search Deals
One-way flight from Riverside to Ko Samui
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Riverside to Ko Samui

Cheapest flights from Riverside to Ko Samui
Explore the most affordable flight options available from Riverside to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This Gurufare deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:05 pmLAX - USM
1 stop29h 25mSingapore Airlines
Sat 11/811:45 amUSM - LAX
1 stop23h 10mSingapore Airlines
Deal found 4/21$836
This FlightHub deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:50 pmLAX - USM
2 stops26h 20mMultiple Airlines
Wed 11/267:00 amUSM - LAX
2 stops20h 30mMultiple Airlines
Deal found 4/21$921
This Gurufare deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2712:30 amLAX - USM
2 stops26h 20mEVA Air
Mon 5/128:00 amUSM - LAX
2 stops26h 55mEVA Air
Deal found 4/21$1,090
This Turkish Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/191:40 pmLAX - USM
2 stops29h 20mTurkish Airlines
Mon 5/267:10 pmUSM - LAX
2 stops30h 35mTurkish Airlines
Deal found 4/21$1,219
This Trip.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1112:25 amLAX - USM
1 stop28h 10mCathay Pacific
Tue 8/2610:55 amUSM - LAX
1 stop20h 10mCathay Pacific
Deal found 4/21$1,407
This Gotogate deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3012:05 amLAX - USM
3 stops26h 30mVietnam Airlines
Fri 5/98:00 amUSM - LAX
3 stops26h 45mVietnam Airlines
Deal found 4/21$2,054
This Booking.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/119:10 pmLAX - USM
3 stops28h 35mChina Airlines
Wed 8/208:00 amUSM - LAX
2 stops20h 30mChina Airlines
Deal found 4/21$2,753
This Emirates deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/54:40 pmLAX - USM
2 stops34h 15mEmirates
Thu 6/124:25 pmUSM - LAX
2 stops35h 50mEmirates
Deal found 4/21$3,287

Cheapflights Fare Finder

Customize your flight search to find flights from Riverside to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2025.
Use the filters below to find and compare flights from Riverside to Ko Samui that are best for you.

Fly from

Riverside

Fly to

Ko Samui

Route

Depart

Return

Price

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 8/12

1:25 pm-10:10 am

2 stops30h 45m

Ko Samui

Tue 8/26

3:30 pm-10:35 pm

2 stops21h 05m

$1,037

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 8/11

12:50 am-3:45 pm

2 stops24h 55m

Ko Samui

Tue 8/26

8:45 am-9:25 pm

2 stops26h 40m

$1,179

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 5/19

1:40 pm-9:00 am

2 stops29h 20m

Ko Samui

Mon 5/26

7:10 pm-11:45 am

2 stops30h 35m

$1,219

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 8/12

11:40 pm-6:30 pm

1 stop28h 50m

Ko Samui

Tue 8/26

5:50 pm-7:05 pm

1 stop39h 15m

$1,231

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 8/11

12:25 am-6:35 pm

1 stop28h 10m

Ko Samui

Tue 8/26

10:55 am-5:05 pm

1 stop20h 10m

$1,407

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 8/11

9:10 pm-3:45 pm

3 stops28h 35m

Ko Samui

Wed 8/20

8:00 am-2:30 pm

2 stops20h 30m

$2,753

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Thu 6/5

4:40 pm-4:55 pm

2 stops34h 15m

Ko Samui

Thu 6/12

4:25 pm-2:15 pm

2 stops35h 50m

$3,287

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 8/12

12:30 pm-6:30 pm

2 stops40h 00m

$601

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Fri 7/18

8:40 pm-7:50 am

1 stop21h 10m

$767

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Fri 6/20

12:15 am-2:45 pm

2 stops24h 30m

$943

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 12 results
1
2

Best time to book a flight from Riverside to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Riverside with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Riverside to Ko Samui

What is the cheapest time of day to fly from R1V to USM?

Find hourly flight availability from Riverside to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

When flying from Riverside to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Riverside to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Ko Samui. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Riverside to Ko Samui flight should consider departing on Thursday at noon when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated April 22, 2025.
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,179 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Singapore Airlines
8.1
Very good
1,290 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Emirates
8.0
Very good
3,205 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Vietnam Airlines
7.6
Good
194 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Cathay Pacific
7.5
Good
850 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

Find useful and relevant information for your journey from Riverside to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ko Samui from Riverside?

    Ko Samui (USM) is the airport you will fly into if you book a flight from Riverside to Ko Samui. You should not have trouble finding flights to Ko Samui from Riverside; the airport handles an average of 0 inbound flights from Riverside per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Ko Samui airport from Riverside. It is only a 2.1 mi journey from Ko Samui (USM) to Ko Samui’s city center.

  • Can I find deals for flights from Riverside to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Riverside to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Ko Samui.

  • Can I find deals for business class flights from Riverside to Ko Samui?

    Yes. Cheapflights offers flight deals from Riverside to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Riverside?

Book flights to Riverside if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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Top 2 airlines flying from Riverside to Ko Samui

Discover the top 2 airlines that operate flights from Riverside to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$964Average$1,274FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,071Average$1,178FlexibilityNo cancel feeOn-time74%

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