TravelCityIndex
HomeCheapestSafestBest timeMethodology
TravelCityIndex

One page of sourced numbers per city: what a day costs, what the travel advisory says, and which months score best on the weather.

Data: GeoNames, Open-Meteo, World Bank, US State Department, UK FCDO.

Site

  • About
  • Sources
  • Methodology
  • Privacy
  • Terms
  • Contact
© 2026 Travel City Index. Every number on this site comes from a dataset named on the page that shows it.
  1. Home
  2. /Istanbul
  3. /Istanbul vs London

Turkey · United Kingdom

Istanbul vs London: cost, safety and weather compared (2026)

Every figure below comes from the same datasets for both cities, so the two columns are comparable.

Istanbul and London compared on cost, safety, weather and size
IstanbulTurkeyLondonUnited Kingdom
Daily cost, per personestimate
Budget$45$105
Mid-range$110$245
Luxury$230$520
Price level0.41× US (2025)0.89× US (2025)
US advisoryLevel 2Level 2
Best monthsJun, Jul, Aug and SepMay, Jun, Jul and Aug
Annual rain766 mm763 mm
Average high19.8 °C15.6 °C
Population15.7M9.0M
Time zoneEurope/IstanbulEurope/London

The short answer

Istanbul is about 55 % cheaper per day than London, $110 against $245 (mid-range estimate). Both carry a US Level 2 advisory. In September, the daily average is 23 °C in Istanbul and 16 °C in London.

Keep reading

City overviews

  • Istanbul overview
  • London overview

Cost and safety in detail

  • Istanbul trip cost
  • Is Istanbul safe?
  • London trip cost
  • Is London safe?

Where they rank

  • Cheapest cities in Europe
  • Safest cities in Europe

Countries

  • All cities in Turkey
  • All cities in United Kingdom

Sources

  • GeoNames city database — CC BY 4.0, fetched September 14, 2026
  • Open-Meteo climate archive — CC BY 4.0, fetched September 21, 2026
  • World Bank price level and exchange rate — CC BY 4.0, data year 2025
  • US State Department travel advisories — public domain, fetched September 21, 2026

Dates are the most recent fetch across the cities on this page. Every sentence here is generated from the data by rule, with no AI writing; the formulas are public.