How the cheapest fare moved
Sep 19: €50
€50
Sep 13
Sep 19
low €44 · high €92
Departure-day prices · September 2026 Madrid → San Sebastian
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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Return-day prices · September 2026 San Sebastian → Madrid
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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Best time to visit San Sebastian — climate Jan: ~14°C daytime, 17 rainy days
14°
Jan Feb: ~16°C daytime, 12 rainy days
16°
Feb Mar: ~15°C daytime, 20 rainy days
15°
Mar Apr: ~19°C daytime, 17 rainy days
19°
Apr May: ~20°C daytime, 16 rainy days
20°
May Jun: ~25°C daytime, 9 rainy days
25°
Jun Jul: ~24°C daytime, 17 rainy days
24°
Jul Aug: ~26°C daytime, 13 rainy days
26°
Aug Sep: ~23°C daytime, 14 rainy days
23°
Sep Oct: ~21°C daytime, 11 rainy days
21°
Oct Nov: ~17°C daytime, 16 rainy days
17°
Nov Dec: ~14°C daytime, 14 rainy days
14°
Dec Best value: Oct — fares from €44 and ~21°C daytime.
Flights from Madrid to San Sebastian start around €44 (direct flights available). Range seen recently: €44–65, based on 6 fares found by travellers.
Fly (from €44)
1h 10m duration
€44–65 recent fares
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Cheapest cached fares Madrid → San Sebastian; direct flights available (e.g. IB). · Based on 6 fares found by travellers in the last 48h
Cheapest round trips to San Sebastian Fares found by travellers in the last 48 hours — refreshed daily.
Oct 23 – Oct 26
Iberia · Direct · 1h 10m
€96
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Sep 26 – Sep 28
Iberia · Direct · 1h 10m
€100
Book
Sep 22 – Sep 23
Iberia · Direct · 1h 10m
€122
Book
Sep 22 – Sep 27
Iberia · Direct · 1h 10m
€153
Book
Sep 26 – Sep 27
Iberia · Direct · 1h 10m
€179
Book
Sep 20 – Sep 21
Air Europa · 1 stop · 2h 55m
€190
Book
Sep 23 – Sep 24
Iberia · Direct · 1h 10m
€200
Book
Sep 20 – Sep 23
Air Europa · 1 stop · 2h 45m
€213
Book
Weather in San Sebastian
Sat
☁️
21°
15°
💧0%
Sun
🌤️
23°
17°
💧0%
Mon
☁️
24°
18°
💧0%
Tue
☁️
25°
17°
💧0%
Wed
☁️
26°
15°
💧3%
Thu
☁️
26°
12°
💧3%
Fri
🌤️
25°
16°
💧2%
In Sep, San Sebastian typically sees ~23°C daytime highs and 14 rainy days.
Where to stay in San Sebastian 3★+ hotels from €120/night (30 hotels sampled, ~3 weeks out).
Numad Studios
hotel · San Sebastian
from €120/night ★ 4
The Social Hub San Sebastián
hotel · San Sebastian
from €151/night ★ 4
Pensión La Perla
hotel · San Sebastian
from €159/night ★ 4
Good to know Currency Euro (€)
Power plugs Type C/F
Border Schengen — no passport control from Schengen countries
Time difference Same time zone
Time in the air 1h 10m
Things to do in San Sebastian Top-rated tours and tickets from €155 — book ahead for the popular ones.
Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.
About San Sebastian
Donostia-San Sebastián (Basque: Donostia; Spanish: San Sebastián) is a major city in the Basque Country, an Autonomous Community of Spain. Donostia/San Sebastian boasts one of the best in-city beaches in Europe. It is quite unusual feeling that you can sunbathe and swim right next to major historical buildings and churches. Surfers are in abundance here.
Read the full San Sebastian guide
Guide content from Wikivoyage contributors (CC BY-SA).
Popular from Madrid 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 2026-09-19. Some links earn Stayonomy a commission at no cost to you.