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Cheap flights from San Diego to Ko Samui from $1,457

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Ko Samui departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Diego to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:40 pm - 2:45 pm
SAN
-
USM
33h 05m
3 stops
Multiple Airlines Logo
2:35 pm - 10:06 am
USM
-
SAN
33h 31m
3 stops
$1,457Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
Japan Airlines Logo
1:35 pm - 8:35 am
SAN
-
USM
29h 00m
2 stops
Japan Airlines Logo
7:50 am - 11:35 am
USM
-
SAN
41h 45m
2 stops
$1,539Japan Airlines
Mon, Sep 7 - Thu, Sep 10
Multiple Airlines Logo
1:35 pm - 7:10 am
SAN
-
USM
27h 35m
2 stops
Multiple Airlines Logo
8:45 am - 10:27 am
USM
-
SAN
39h 42m
3 stops
$1,547Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
Multiple Airlines Logo
1:35 pm - 7:10 am
SAN
-
USM
27h 35m
2 stops
Multiple Airlines Logo
4:25 pm - 11:47 am
USM
-
SAN
33h 22m
2 stops
$1,612Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
British Airways Logo
7:00 pm - 9:05 pm
SAN
-
USM
36h 05m
2 stops
British Airways Logo
4:25 pm - 4:10 pm
USM
-
SAN
38h 45m
2 stops
$2,224British Airways
Fri, Oct 30 - Tue, Nov 3

momondo Fare Finder

 
Customize your flight search to find flights from San Diego 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, momondo users made 832,500 searches. Data last updated May 9, 2026.
Use the filters below to find and compare flights from San Diego to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 9/24

3:40 pm-2:45 pm

3 stops33h 05m

Ko Samui

Sat 10/3

2:35 pm-10:06 am

3 stops33h 31m

$1,457

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Mon 9/7

1:35 pm-8:35 am

2 stops29h 00m

Ko Samui

Thu 9/10

7:50 am-11:35 am

2 stops41h 45m

$1,539

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 9/24

1:35 pm-7:10 am

2 stops27h 35m

Ko Samui

Sat 10/3

8:45 am-10:27 am

3 stops39h 42m

$1,547
Quickest round-trip

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 9/24

1:35 pm-7:10 am

2 stops27h 35m

Ko Samui

Sat 10/3

4:25 pm-11:47 am

2 stops33h 22m

$1,612

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Fri 10/30

7:00 pm-9:05 pm

2 stops36h 05m

Ko Samui

Tue 11/3

4:25 pm-4:10 pm

2 stops38h 45m

$2,224

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

How to get the cheapest flight ticket from San Diego to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How often are flights from San Diego to Ko Samui delayed?

Historically, on average around 13% of flights between San Diego and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 159 minutes.

What is the most punctual flight time for San Diego to Ko Samui flights?

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on San Diego to Ko Samui flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

When to book flights from San Diego to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Diego to Ko Samui (SAN to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to Ko Samui

Fastest flight time

27h 35m

Direct flights

None
The fastest flight from San Diego to Ko Samui takes 27h 35m
There are no direct flights from San Diego to Ko Samui. There are no popular flight routes from San Diego to Ko Samui.
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Frequently asked questions about flying from San Diego to Ko Samui

  • How far is San Diego to Ko Samui by plane?

    A flight from San Diego to Ko Samui will travel around 8620.4 mi. A reasonable flight in good conditions will take 27h 35m.

  • When did momondo last update prices for flights from San Diego Airport to Ko Samui Airport?

    Prices for flights from San Diego Airport to Ko Samui Airport are refreshed on a daily basis.

  • How old do you have to be to fly from San Diego Airport to Ko Samui Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to Ko Samui Airport.

  • What documentation or ID do you need to fly to Ko Samui Airport?

    The required travel and health documents for your Ko Samui Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ko Samui Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Ko Samui?

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

Why use momondo?

Why should I use momondo to find a flight deal from San Diego to Ko Samui?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Diego to Ko Samui. momondo saves you time and could save you money on your trip.

Can I find flights from San Diego to Ko Samui with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ko Samui from San Diego which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Diego to Ko Samui?

Once all potential San Diego to Ko Samui flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Diego to Ko Samui right now. Can momondo alert me if prices change?

Price alerts on flights to Ko Samui from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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