Roundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 2FriOct 16Fri
14 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysCheapest Time to Fly to Ko Samui
Compare the cheapest months to fly from Bangkok to Ko Samui in THB. See separate one-way and roundtrip fare ranges, sample sizes and current deals.
One way from ฿2,423
Roundtrip from ฿4,958
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Current deals to Ko Samui · Roundtrip
Outbound and return flights together in one total fare · Available fares behind the monthly comparison
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 2FriOct 22Thu
20 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 2FriOct 20Tue
18 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 2FriOct 21Wed
19 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 5MonOct 16Fri
11 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 5MonOct 22Thu
17 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 5MonOct 20Tue
15 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 5MonOct 21Wed
16 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 9FriOct 16Fri
7 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysRoundtrip
Holiday
🇹🇭Ko Samui
Thailand
Island Beach Romantic
Oct 9FriOct 22Thu
13 nights27°
Roundtrip fare
฿4,958
Steal
฿7,600-35%฿2,642 below avg
Bangkok AirwaysMonthly fare comparison
Lowest and average fares with sample sizes.
Monthly fare comparison
Lowest and average fares with sample sizes.
January 2027
616 fares
One way31
- Min
- ฿2,727
- Avg
- ฿3,458
Roundtrip585
- Min
- ฿5,566
- Avg
- ฿8,774
February 2027
560 fares
One way28
- Min
- ฿2,727
- Avg
- ฿3,444
Roundtrip532
- Min
- ฿5,566
- Avg
- ฿7,784
March 2027
540 fares
One way27
- Min
- ฿2,727
- Avg
- ฿2,804
Roundtrip513
- Min
- ฿5,566
- Avg
- ฿5,820
September 2026
420 fares
One way21
- Min
- ฿3,081
- Avg
- ฿4,484
Roundtrip399
- Min
- ฿6,430
- Avg
- ฿9,322
October 2026
620 fares
One way31
- Min
- ฿2,423
- Avg
- ฿2,919
Roundtrip589
- Min
- ฿4,958
- Avg
- ฿6,114
November 2026
600 fares
One way30
- Min
- ฿2,423
- Avg
- ฿2,645
Roundtrip570
- Min
- ฿4,958
- Avg
- ฿6,087
December 2026
605 fares
One way31
- Min
- ฿2,727
- Avg
- ฿4,792
Roundtrip574
- Min
- ฿5,566
- Avg
- ฿9,652
How to read the monthly fare data
- Compare one-way prices only with the one-way series and roundtrip prices only with the roundtrip series.
- Use the fare count to judge how much current evidence sits behind a monthly average.
- Treat the lowest fare as an observed option, not a guaranteed future price.
- Open a month to compare exact departure dates, airlines, stops and travel time.
FAQ: Cheapest Time to Fly to Ko Samui
Which month has the cheapest one-way flights from Bangkok to Ko Samui?
October currently has the lowest observed one-way fare, from ฿2,423. This compares one-way fares only.
Which month has the cheapest roundtrip flights from Bangkok to Ko Samui?
October currently has the lowest observed roundtrip fare, from ฿4,958. This compares complete roundtrips only.
How are the cheapest months for Ko Samui calculated?
We compare current observed fares from Bangkok by departure month. One-way and roundtrip prices stay in separate series, and each monthly table shows its available fare count.
Does the cheapest month guarantee the same price later?
No. It identifies the lowest fare in the current dataset, not a future price guarantee. Confirm the final itinerary total, airports, baggage and availability before booking.
Quick Answers
Which month is cheapest one way?
October currently starts at ฿2,423, the lowest observed one-way fare among the available months.
Which month is cheapest roundtrip?
October currently starts at ฿4,958, the lowest observed complete-roundtrip fare.
What does this comparison include?
Each month shows the lowest and average observed itinerary total plus the number of available fares in that series.
Can one-way and roundtrip prices be compared?
No. They represent different products, so this page keeps their prices, averages and sample sizes separate.