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Cheap flights from London to Koh Samui

One-way from £358, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Thu, Oct 29Any priceFri, Oct 30Any priceSat, Oct 31£385Sun, Nov 1£358Mon, Nov 2Any priceTue, Nov 3£407Wed, Nov 4Any priceThu, Nov 5£371

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
£358
Shenzhen Airlines, flight ZH 888Found 5 days ago, 1 adult
Check live price
21:10LondonSun, Nov 1
Travel time 16h 45m, 2 stopsLHRUSM
20:55Koh SamuiMon, Nov 2
£360
Ryanair, flight FR 8318Found yesterday, 1 adult
Check live price
19:15LondonFri, Nov 6
Travel time 17h, 3 stopsSTNUSM
19:15Koh SamuiSat, Nov 7
£371
Ryanair, flight FR 2757Found yesterday, 1 adult
Check live price
17:00LondonThu, Nov 5
Travel time 15h 20m, 3 stopsSTNUSM
15:20Koh SamuiFri, Nov 6
£382
Ryanair, flight FR 8318Found yesterday, 1 adult
Check live price
06:05LondonWed, Oct 28
Travel time 15h 20m, 3 stopsSTNUSM
04:25Koh SamuiThu, Oct 29
£385
Turkmenistan Airlines, flight T5 428Found yesterday, 1 adult
Check live price
15:10LondonSat, Oct 31
Travel time 13h 30m, 2 stopsLGWUSM
11:40Koh SamuiSun, Nov 1

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in ThailandTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Koh Samui, booked ahead at a fixed price.
    See options
  • Things to do in Koh SamuiPopular tours from $30.07 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for Thailand from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Arrived 3+ hours late, cancelled at short notice or bumped? Up to £520 per person under UK261.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu12345678910111213141516171819202122232425£51026–27–28£38229–30–31£385

November 2026

MoTuWeThFrSaSu1£3582–3£4074–5£3716£3607–8–9–10–11–12–13–14–15–16–17–18–19–20–21–22£38523–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12–13–14–15–16–17–18–19–20–21–22–23–2425262728293031
£371 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 1, £358.

Lowest fares by month

In the fares found this week, November has the lowest: from £358 one-way, against £659 in December. Pick a month to see its cheapest date.

  1. Oct£382
  2. Nov£358
  3. Dec£659
  4. Janno fares yet
  5. Febno fares yet
  6. Marno fares yet
  7. Aprno fares yet
  8. Mayno fares yet
  9. Junno fares yet
  10. Julno fares yet
  11. Augno fares yet
  12. Sep£480
£0£250£500£750Oct£358NovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October£382Wed, Oct 283 stops
November£358Sun, Nov 12 stops
December£659Sat, Dec 263 stops
January 2027—
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027£480Mon, Sep 272 stops

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Koh Samui. Average daily high and low and monthly precipitation, 1991–2020 normals.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare£382£358£659––––––––£480
High °C31°30°29°29°29°30°32°33°33°32°32°32°
Low °C24°24°24°24°25°25°26°26°25°25°25°25°
Precipitation mm2954452631276411683132134117102118

Source: Ko Samui on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

What is the cheapest month to fly from London to Koh Samui?

In the fares found this week, November has the lowest: from £358 one-way, against £659 in December.

What is the weather in Koh Samui in November?

In November, the cheapest month to fly, the average daily high in Koh Samui is 30 °C and the low 24 °C.

Are there direct flights from London to Koh Samui?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

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