Helsinki: cheap flights and the best time to go
Design, saunas and island ferries. Finland, Finland · Cities
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Cheapest round trip
Safety level
Level 1 Level 1: Exercise normal precautions
The State Department's advisory for Finland (updated 2026-03-12)
Levels: 1 Exercise normal precautions · 2 Exercise increased caution · 3 Reconsider travel · 4 Do not travel. Read the advisory before you book; it can change. Checked 2026-10-07.
Best time to go
For the weather: June, July, August (highs of 62–82°F, not too much rain). With fares from your airport, the best months weigh weather 60% and price 40%.
| Month | High | Low | Rain | Cheapest round trip from JFK |
|---|---|---|---|---|
| January | 31°F | 22°F | 2.1 in | … |
| February | 30°F | 21°F | 1.5 in | … |
| March | 36°F | 26°F | 1.4 in | … |
| April | 47°F | 34°F | 1.3 in | … |
| May | 58°F | 44°F | 1.5 in | … |
| June (a best month) | 66°F | 52°F | 2.4 in | … |
| July (a best month) | 71°F | 58°F | 2.2 in | … |
| August (a best month) | 69°F | 56°F | 3.2 in | … |
| September | 60°F | 49°F | 2.2 in | … |
| October | 48°F | 40°F | 2.9 in | … |
| November | 40°F | 33°F | 2.7 in | … |
| December | 35°F | 27°F | 2.3 in | … |
Typical daily high and low and total rain, 1991–2020: NOAA NCEI GHCN-Daily, station HELSINKI KAISANIEMI AWS (1 km away). ★ = the best three months. Fares are the cheapest found for trips leaving that month in the next year.
Prices are per seat for a round trip in economy; with more than one traveler they're the total for your party (babies under 2 on a lap need no seat). The booking site shows the final price for everyone.