How the cheapest fare moved
Sep 18: €34 €34
Sep 12
Sep 18
low €31 · high €106
Departure-day prices · September 2023 London → Helsinki
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Return-day prices · September 2023 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 Best value: Aug — fares from €55 and ~19°C daytime.
Flights from London to Helsinki start around €31 (direct flights available). Range seen recently: €31–72, based on 13 fares found by travellers.
Fly (from €31)
2h 50m duration
€31–72 recent fares
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Cheapest cached fares London → Helsinki; direct flights available (e.g. FR). · Based on 13 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 3 – Nov 5
Ryanair · Direct · 2h 50m
€100
Book
Nov 3 – Nov 6
Ryanair · Direct · 2h 50m
€100
Book
Nov 2 – Nov 6
Norwegian Air Sweden · Direct · 3h 00m
€127
Book
Oct 24 – Oct 28
SAS Scandinavian · 1 stop · 3h 30m
€155
Book
Oct 19 – Nov 5
Norwegian Air Sweden · 1 stop · 3h 30m
€162
Book
Oct 20 – Oct 24
Norwegian Air Sweden · 1 stop · 3h 30m
€178
Book
Dec 25 – Jan 4
Norwegian Air Sweden · 1 stop · 3h 25m
€187
Book
Sep 21 – Sep 23
Ryanair · Direct · 2h 50m
€194
Book
Weather in Helsinki
Fri
🌦️
16°
13°
💧100%
Sat
🌦️
16°
14°
💧100%
Sun
🌦️
16°
14°
💧100%
Mon
🌦️
16°
10°
💧63%
Tue
🌤️
16°
8°
💧6%
Wed
☁️
15°
7°
💧14%
Thu
🌦️
12°
9°
💧28%
In Sep, Helsinki typically sees ~13°C daytime highs and 8 rainy days.
Where to stay in Helsinki 3★+ hotels from €69/night (40 hotels sampled, ~3 weeks out).
Noli Sörnäinen
hotel · Helsinki
from €69/night ★ 4
Crowne Plaza Helsinki - Hesperia by IHG
hotel · Helsinki
from €71/night ★ 4
VALO Hotel & Work Helsinki
hotel · Helsinki
from €71/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 2026-09-18. Some links earn Stayonomy a commission at no cost to you.
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