How the cheapest fare moved
Oct 25: €64 €64
Oct 18
Oct 25
low €31 · high €71
Departure-day prices · December 2018 London → Helsinki
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Return-day prices · December 2018 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, 19 rainy days
17°
Jun Jul: ~23°C daytime, 12 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, 13 rainy days
6°
Nov Dec: ~4°C daytime, 14 rainy days
4°
Dec Flights from London to Helsinki start around €31 (direct flights available). Range seen recently: €31–71, based on 12 fares found by travellers.
Fly (from €31)
2h 50m duration
€31–71 recent fares
Book
Cheapest cached fares London → Helsinki; direct flights available (e.g. FR). · Based on 12 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 4 – Nov 7
Ryanair · Direct · 2h 50m
€51
Book
Oct 30 – Nov 21
Ryanair · Direct · 2h 50m
€57
Book
Nov 21 – Nov 28
Ryanair · Direct · 2h 50m
€76
Book
Oct 30 – Nov 17
Ryanair · Direct · 2h 50m
€85
Book
Nov 19 – Nov 21
Ryanair · Direct · 2h 50m
€87
Book
Nov 20 – Nov 23
Ryanair · Direct · 2h 50m
€99
Book
Oct 30 – Nov 18
Ryanair · Direct · 2h 50m
€100
Book
Jan 8 – Jan 15
Ryanair · Direct · 2h 50m
€101
Book
Weather in Helsinki
Sun
☁️
11°
10°
💧33%
Mon
🌦️
12°
11°
💧96%
Tue
🌦️
12°
11°
💧50%
Wed
☁️
12°
10°
💧35%
Thu
🌦️
11°
5°
💧37%
Fri
☁️
9°
3°
💧14%
Sat
🌫️
6°
0°
💧7%
In Dec, Helsinki typically sees ~3°C daytime highs and 21 rainy days.
Where to stay in Helsinki 3★+ hotels from €76/night (39 hotels sampled, ~3 weeks out).
Noli Sörnäinen
hotel · Helsinki
from €76/night ★ 4
Scandic Grand Marina
hotel · Helsinki
from €81/night ★ 4
Scandic Ruoholahti
hotel · Helsinki
from €82/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 50m
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 2026-10-25. Some links earn Stayonomy a commission at no cost to you.
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