How the cheapest fare moved
Jul 25: €57 €57
Jul 18
Jul 25
low €56 · high €69
Departure-day prices · June 2026 Cologne → Istanbul
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Return-day prices · June 2026 Istanbul → Cologne
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Best time to visit Istanbul — climate Jan: ~11°C daytime, 9 rainy days
11°
Jan Feb: ~7°C daytime, 15 rainy days
7°
Feb Mar: ~17°C daytime, 10 rainy days
17°
Mar Apr: ~16°C daytime, 8 rainy days
16°
Apr May: ~23°C daytime, 9 rainy days
23°
May Jun: ~29°C daytime, 1 rainy days
29°
Jun Jul: ~32°C daytime, 0 rainy days
32°
Jul Aug: ~30°C daytime, 2 rainy days
30°
Aug Sep: ~25°C daytime, 4 rainy days
25°
Sep Oct: ~19°C daytime, 12 rainy days
19°
Oct Nov: ~18°C daytime, 8 rainy days
18°
Nov Dec: ~12°C daytime, 14 rainy days
12°
Dec Best value: Oct — fares from €53 and ~19°C daytime.
Flights from Cologne to Istanbul start around €53 (direct flights available). Range seen recently: €53–60, based on 13 fares found by travellers.
Fly (from €53)
3h 10m duration
€53–60 recent fares
Book
Cheapest cached fares Cologne → Istanbul; direct flights available (e.g. VF). · Based on 13 fares found by travellers in the last 48h
Cheapest round trips to Istanbul Fares found by travellers in the last 48 hours — refreshed daily.
Sep 7 – Sep 28
Ajet · Direct · 3h 10m
€122
Book
Sep 21 – Sep 26
Ajet · Direct · 3h 10m
€123
Book
Oct 7 – Oct 16
Pegasus Airlines · Direct · 3h 10m
€123
Book
Oct 8 – Oct 16
Pegasus Airlines · Direct · 3h 10m
€123
Book
Sep 11 – Sep 15
Ajet · Direct · 3h 15m
€127
Book
Sep 12 – Sep 15
Ajet · Direct · 3h 10m
€130
Book
Sep 22 – Sep 26
Ajet · Direct · 3h 10m
€130
Book
Sep 23 – Sep 26
Ajet · Direct · 3h 15m
€131
Book
Weather in Istanbul
Sat
🌧️
24°
20°
💧55%
Sun
🌤️
26°
20°
💧0%
Mon
🌤️
30°
21°
💧0%
Tue
🌤️
31°
23°
💧3%
Wed
🌤️
29°
22°
💧0%
Thu
🌤️
28°
22°
💧0%
Fri
🌤️
28°
23°
💧0%
In Jun, Istanbul typically sees ~29°C daytime highs and 1 rainy days.
Where to stay in Istanbul 3★+ hotels from €56/night (40 hotels sampled, ~3 weeks out).
Akgun Istanbul Hotel, WorldHotels Crafted Collection
hotel · Istanbul
from €56/night ★ 5
Melas Hotel Istanbul
hotel · Istanbul
from €59/night ★ 5
Millennium Istanbul Golden Horn
hotel · Istanbul
from €66/night ★ 5
Good to know Currency TRY · €1 ≈ 53.86
Power plugs Type C/F
Border Passport/ID checks apply
Time difference +1h
Time in the air 3h 10m
Things to do in Istanbul Top-rated tours and tickets from €30 — book ahead for the popular ones.
Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.
About Istanbul
Istanbul (Turkish: İstanbul) is a very large city of fantastic history, culture and beauty. Called Byzantium in ancient times, the city's name was changed to Constantinople in 324 CE when it was rebuilt by the first Christian Roman Emperor, Constantine. The name "Istanbul", perhaps surprisingly, comes from Greek and could be translated as a corruption of "to the city".
Read the full Istanbul guide
Guide content from Wikivoyage contributors (CC BY-SA).
Popular from Cologne 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 2026-07-25. Some links earn Stayonomy a commission at no cost to you.
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