How the cheapest fare moved
Oct 3: €33 €33
Sep 26
Oct 3
low €29 · high €104
Departure-day prices · December 2021 London → Helsinki
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Return-day prices · December 2021 Helsinki → London
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Best time to visit Helsinki — climate Jan: ~2°C daytime, 17 rainy days
2°
Jan Feb: ~-1°C daytime, 5 rainy days
-1°
Feb Mar: ~5°C daytime, 9 rainy days
5°
Mar Apr: ~9°C daytime, 11 rainy days
9°
Apr May: ~13°C daytime, 12 rainy days
13°
May Jun: ~17°C daytime, 20 rainy days
17°
Jun Jul: ~23°C daytime, 11 rainy days
23°
Jul Aug: ~19°C daytime, 14 rainy days
19°
Aug Sep: ~16°C daytime, 12 rainy days
16°
Sep Oct: ~10°C daytime, 14 rainy days
10°
Oct Nov: ~6°C daytime, 15 rainy days
6°
Nov Dec: ~4°C daytime, 14 rainy days
4°
Dec Flights from London to Helsinki start around €29 (direct flights available). Range seen recently: €29–67, based on 5 fares found by travellers.
Fly (from €29)
2h 50m duration
€29–67 recent fares
Book
Cheapest cached fares London → Helsinki; direct flights available (e.g. FR). · Based on 5 fares found by travellers in the last 48h
Cheapest round trips to Helsinki Fares found by travellers in the last 48 hours — refreshed daily.
Nov 5 – Nov 8
Ryanair · Direct · 2h 50m
€75
Book
Oct 10 – Oct 24
Ryanair · Direct · 2h 50m
€93
Book
Jan 21 – Jan 31
Ryanair · Direct · 2h 50m
€97
Book
Nov 2 – Nov 6
Wizz Air · 2 stops · 4h 35m
€117
Book
Oct 27 – Nov 20
SAS Scandinavian · 1 stop · 3h 25m
€133
Book
Oct 21 – Nov 19
Malta Air · 1 stop · 3h 15m
€165
Book
Oct 28 – Nov 1
Ryanair · Direct · 2h 50m
€169
Book
Oct 24 – Oct 28
Finnair · Direct · 2h 45m
€182
Book
Weather in Helsinki
Sun
🌦️
15°
11°
💧70%
Mon
🌦️
14°
11°
💧71%
Tue
🌦️
15°
12°
💧31%
Wed
🌤️
14°
8°
💧14%
Thu
🌦️
14°
8°
💧53%
Fri
🌦️
14°
13°
💧56%
Sat
🌧️
14°
13°
💧31%
In Dec, Helsinki typically sees ~3°C daytime highs and 13 rainy days.
Where to stay in Helsinki 3★+ hotels from €69/night (39 hotels sampled, ~3 weeks out).
Noli Sörnäinen
hotel · Helsinki
from €69/night ★ 4
VALO Hotel & Work Helsinki
hotel · Helsinki
from €75/night ★ 4
Crowne Plaza Helsinki - Hesperia by IHG
hotel · Helsinki
from €78/night ★ 4
Good to know Currency Euro (€)
Power plugs Type C/F
Border Schengen — no passport control from Schengen countries
Time difference +2h
Time in the air 2h 45m
Things to do in Helsinki Top-rated tours and tickets from €49 — book ahead for the popular ones.
Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.
About Helsinki
Helsinki (Swedish: Helsingfors) is Finland's capital and largest city. Helsinki combines modern and historic architectural styles with beautiful open spaces. The city is surrounded by hundreds of tiny islands, and is a cultural bridge between the East and West. The "Pearl of the Baltic Sea" is easy to explore on foot or on bike, and it has a laid-back vibe.
Read the full Helsinki guide
Guide content from Wikivoyage contributors (CC BY-SA).
Popular from London Cheapest destinations travellers searched recently — refreshed daily.
Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo ; exchange rates: ECB reference. Data updated 2026-10-03. Some links earn Stayonomy a commission at no cost to you.
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