How the cheapest fare moved
Aug 23: €347
€347
Aug 17
Aug 23
low €343 · high €404
Departure-day prices · April 2027 San Francisco → Istanbul
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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Return-day prices · April 2027 Istanbul → San Francisco
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8 €671 9
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17 €421 18
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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
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: Apr — fares from €313 and ~16°C daytime.
Flights from San Francisco to Istanbul start around €313 (typically 1 stop). Range seen recently: €313–378, based on 12 fares found by travellers.
Fly (from €313)
13h 40m duration
€313–378 recent fares
Book
Cheapest cached fares San Francisco → Istanbul; typically 1 stop (e.g. LH). · Based on 12 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 29 – Oct 5
Lufthansa · 1 stop · 13h 40m
€438
Book
Nov 25 – Dec 15
Lufthansa · 1 stop · 13h 40m
€689
Book
Weather in Istanbul
Mon
🌤️
30°
22°
💧0%
Tue
🌤️
30°
23°
💧0%
Wed
☁️
30°
21°
💧0%
Thu
☁️
27°
22°
💧3%
Fri
🌤️
25°
21°
💧3%
Sat
🌤️
26°
21°
💧3%
Sun
☁️
30°
18°
💧1%
In Apr, Istanbul typically sees ~17°C daytime highs and 8 rainy days.
Where to stay in Istanbul 3★+ hotels from €57/night (40 hotels sampled, ~3 weeks out).
Akgun Istanbul Hotel, WorldHotels Crafted
hotel · Istanbul
from €57/night ★ 5
Ramada By Wyndham Istanbul Pera
hotel · Istanbul
from €64/night ★ 4
Arise Hotel Golden Horn
hotel · Istanbul
from €69/night ★ 4
Good to know Currency TRY · €1 ≈ 56.23
Power plugs Type C/F
Border Passport/ID checks apply
Time difference +10h
Time in the air 13h 40m
Things to do in Istanbul Top-rated tours and tickets from €50 — 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 San Francisco 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 2026-08-24. Some links earn Stayonomy a commission at no cost to you.