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Cheap flights from Southampton to Ko Samui from £1,049

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — USM
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southampton to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Southampton to Ko Samui
Explore the most affordable flight options available from Southampton to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Fri 13/317:35
SOU
-
USM
2 stops42h 20m
KLM
Fri 20/311:40
USM
-
SOU
2 stops28h 10m
KLM
Deal found 27/1£1,049
Sat 14/317:30
SOU
-
USM
2 stops36h 35m
Multiple Airlines
Wed 25/311:40
USM
-
SOU
2 stops27h 40m
Multiple Airlines
Deal found 29/1£1,050
Fri 13/308:40
SOU
-
USM
3 stops23h 55m
Multiple Airlines
Fri 20/317:05
USM
-
SOU
3 stops27h 35m
Multiple Airlines
Deal found 27/1£1,421
Wed 22/709:10
SOU
-
USM
3 stops25h 25m
Qatar Airways
Tue 11/820:50
USM
-
SOU
3 stops28h 40m
Qatar Airways
Deal found 27/1£1,700

Find flight deals from Southampton to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 January 2026.

Round-trip from

£1,049

Popular in

December

Cheapest in

May

Average price

£849
KLM
  • KLM
  • 13/3-20/3
  • 4 total stops
  • 70h 30m total
  • Southampton to Ko Samui
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton 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 858,174 searches. Data last updated 29 January 2026.
Use the filters below to find and compare flights from Southampton to Ko Samui that are best for you.

Fly from

Southampton

Fly to

Ko Samui

Route

Depart

Return

Price

SouthamptonKo Samui

SOU - USM

SOUUSM

Southampton Eastleigh

Fri 13/3

17:35-18:55

2 stops42h 20m

Ko Samui

Fri 20/3

11:40-08:50

2 stops28h 10m

£1,049

SouthamptonKo Samui

SOU - USM

SOUUSM

Southampton Eastleigh

Sat 14/3

17:30-13:05

2 stops36h 35m

Ko Samui

Wed 25/3

11:40-08:20

2 stops27h 40m

£1,050

SouthamptonKo Samui

SOU - USM

SOUUSM

Southampton Eastleigh

Fri 13/3

14:25-20:25

3 stops23h 00m

Ko Samui

Fri 20/3

11:40-17:00

2 stops36h 20m

£1,483

SouthamptonKo Samui

SOU - USM

SOUUSM

Southampton Eastleigh

Wed 22/7

09:10-16:35

3 stops25h 25m

Ko Samui

Tue 11/8

20:50-19:30

3 stops28h 40m

£1,700

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Best time to book a flight from Southampton to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Southampton with our price prediction graph.
Estimated return 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 Southampton to Ko Samui

What is the cheapest month to book a flight from Southampton to Ko Samui?

Currently, January is the cheapest month in which you can book a flight from Southampton to Ko Samui (average of £244). Flying from Southampton to Ko Samui in February is currently the most expensive (average of £689). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

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

  • How long is the flight from Southampton to Ko Samui?

    There are many flights that can get you from Southampton to Ko Samui in 42h 20m. Fly via KLM to get the fastest option. The distance between Southampton and Ko Samui is about 6191 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southampton 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.

  • What is the cheapest month to book a flight from Southampton to Ko Samui?

    Currently, January is the cheapest month in which you can book a flight from Southampton to Ko Samui (average of £244). Flying from Southampton to Ko Samui in February is currently the most expensive (average of £689). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling 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

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Alternative routes for Southampton to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Southampton to Ko Samui?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ko Samui from Southampton today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Southampton to Ko Samui?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Southampton to Ko Samui for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Southampton to Ko Samui with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Southampton to Ko Samui flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Southampton to Ko Samui become cheaper?

Yes, Cheapflights offers price alerts on Southampton to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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