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Cheap flights from Southampton to Ko Samui from £439

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 22/8. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — USM
9 Sep — 16 Sep1
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 10 August 2026.

Tue 25/809:15 -
2 stops25h 15m
Mon 21/906:00 -
2 stops40h 50m
Deal found 5/8£761
Sat 22/809:15 -
2 stops21h 30m
Tue 22/921:00 -
2 stops41h 35m
Deal found 10/8£780
Sat 22/809:15 -
2 stops27h 15m
Thu 24/907:50 -
3 stops30h 45m
Deal found 7/8£862
Fri 11/917:20 -
2 stops38h 25m
Fri 18/908:45 -
2 stops30h 00m
Deal found 7/8£1,000
Fri 11/909:20 -
3 stops27h 30m
Fri 18/911:05 -
3 stops30h 55m
Deal found 7/8£1,059
Sun 23/809:15 -
2 stops25h 15m
Tue 1/920:50 -
2 stops41h 45m
Deal found 7/8£1,114

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 10 August 2026.

Round-trip from

£780

One-way from

£439

Popular in

December

Cheapest in

November

Average price

£968
22/8-22/9
  • 22/8-22/9
  • 4 total stops
  • 63h 05m total
  • Southampton to Ko Samui
Search Deals
22/8
  • 22/8
  • 3 total stops
  • 54h 55m total
  • Southampton to Ko Samui
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£84 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£33 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 10 August 2026.
Use the filters below to find and compare flights from Southampton to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonKo Samui

SOU Southampton Eastleigh - USM Ko Samui

SOUUSM

Southampton Eastleigh

Tue 25/8

09:15-16:30

2 stops25h 15m

Ko Samui

Mon 21/9

06:00-16:50

2 stops40h 50m

£761

SouthamptonKo Samui

SOU Southampton Eastleigh - USM Ko Samui

SOUUSM

Southampton Eastleigh

Sat 22/8

09:15-12:45

2 stops21h 30m

Ko Samui

Tue 22/9

21:00-08:35

2 stops41h 35m

£780

SouthamptonKo Samui

SOU Southampton Eastleigh - USM Ko Samui

SOUUSM

Southampton Eastleigh

Sat 22/8

09:15-18:30

2 stops27h 15m

Ko Samui

Thu 24/9

07:50-08:35

3 stops30h 45m

£862

SouthamptonKo Samui

SOU Southampton Eastleigh - USM Ko Samui

SOUUSM

Southampton Eastleigh

Sun 23/8

09:15-16:30

2 stops25h 15m

Ko Samui

Tue 1/9

20:50-08:35

2 stops41h 45m

£1,114
Fastest return journey

SouthamptonKo Samui

SOU Southampton Eastleigh - USM Ko Samui

SOUUSM

Southampton Eastleigh

Thu 3/12

09:20-15:35

3 stops23h 15m

Ko Samui

Fri 18/12

15:35-09:45

3 stops25h 10m

£5,803
Cheapest one-way
Fastest single journey

SouthamptonKo Samui

SOU Southampton Eastleigh - USM Ko Samui

SOUUSM

Southampton Eastleigh

Sat 22/8

18:50-07:45

3 stops54h 55m

£439

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Sorted by cheapest first

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.

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.

  • 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.

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
Khanom

Browse thousands of different options on Cheapflights for your next trip

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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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