Time Difference: Istanbul vs London
London is 2 hours behind Istanbul.
Quick Reference
- Istanbul
- TRT (GMT+3)
No Daylight Saving Time
- London
- BST (GMT+1)
GMT starts on Oct 25, 2026
Frequently Asked Questions
- What is the time difference between Istanbul and London?
- London is 2 hours behind Istanbul.
- When is the best time to call from Istanbul to London?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. Istanbul uses TRT and London uses BST.