Roundtrip
Holiday
🇫🇮Helsinki
Finland
City
Nov 17TueDec 8Tue
21 nights9°
Roundtrip fare
฿19,019
Steal
฿36,988-49%฿17,969 below avg
OUT
Finnair
1 stopFinnairRET
Juneyao Airlines
1 stopJuneyao AirlinesCheapest Time to Fly to Helsinki
Compare the cheapest months to fly from Bangkok to Helsinki in THB. See separate one-way and roundtrip fare ranges, sample sizes and current deals.
One way from ฿5,712
Roundtrip from ฿19,019
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Current deals to Helsinki · Roundtrip
Outbound and return flights together in one total fare · Available fares behind the monthly comparison
Current deals to Helsinki · One way
Outbound-only fares for flexible and open-ended plans · Available fares behind the monthly comparison
One way
Helsinki
Finland
City
Nov 4Wed
One-way fare
฿5,712
Steal
฿19,669-71%฿13,957 below avg
Norwegian Air InternationalOne way
Helsinki
Finland
City
Nov 11Wed
One-way fare
฿7,168
Steal
฿19,669-64%฿12,501 below avg
Norwegian Air InternationalOne way
Helsinki
Finland
City
Nov 17Tue
One-way fare
฿7,373
Steal
฿19,669-63%฿12,296 below avg
FinnairOne way
Helsinki
Finland
City
Nov 10Tue
One-way fare
฿7,502
Steal
฿19,669-62%฿12,167 below avg
FinnairOne way
Helsinki
Finland
City
Oct 27Tue
One-way fare
฿7,700
Steal
฿19,669-61%฿11,969 below avg
FinnairOne way
Helsinki
Finland
City
Oct 28Wed
One-way fare
฿8,095
Steal
฿19,669-59%฿11,574 below avg
Norwegian Air InternationalOne way
Helsinki
Finland
City
Nov 6Fri
One-way fare
฿8,122
Steal
฿19,669-59%฿11,547 below avg
FinnairOne way
Helsinki
Finland
City
Oct 31Sat
One-way fare
฿8,326
Steal
฿19,669-58%฿11,343 below avg
FinnairMonthly fare comparison
Lowest and average fares with sample sizes.
Monthly fare comparison
Lowest and average fares with sample sizes.
January 2027
479 fares
One way30
- Min
- ฿17,732
- Avg
- ฿24,183
Roundtrip449
- Min
- ฿27,639
- Avg
- ฿38,693
February 2027
586 fares
One way28
- Min
- ฿15,533
- Avg
- ฿20,785
Roundtrip558
- Min
- ฿24,990
- Avg
- ฿36,353
March 2027
559 fares
One way27
- Min
- ฿19,175
- Avg
- ฿21,934
Roundtrip532
- Min
- ฿24,533
- Avg
- ฿36,788
September 2026
454 fares
One way22
- Min
- ฿18,546
- Avg
- ฿21,373
Roundtrip432
- Min
- ฿33,111
- Avg
- ฿38,622
October 2026
649 fares
One way31
- Min
- ฿7,700
- Avg
- ฿18,445
Roundtrip618
- Min
- ฿21,566
- Avg
- ฿36,094
November 2026
614 fares
One way30
- Min
- ฿5,712
- Avg
- ฿15,167
Roundtrip584
- Min
- ฿19,019
- Avg
- ฿33,529
December 2026
610 fares
One way31
- Min
- ฿11,783
- Avg
- ฿16,690
Roundtrip579
- Min
- ฿23,997
- Avg
- ฿39,688
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 Helsinki
Which month has the cheapest one-way flights from Bangkok to Helsinki?
November currently has the lowest observed one-way fare, from ฿5,712. This compares one-way fares only.
Which month has the cheapest roundtrip flights from Bangkok to Helsinki?
November currently has the lowest observed roundtrip fare, from ฿19,019. This compares complete roundtrips only.
How are the cheapest months for Helsinki 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?
November currently starts at ฿5,712, the lowest observed one-way fare among the available months.
Which month is cheapest roundtrip?
November currently starts at ฿19,019, 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.