London to San Antonio Time Difference
San Antonio is 6 hours behind London. When it is noon in London, it is 06:00 in San Antonio.
London (UTC+1) → Chicago (UTC-5)
🕐 Interactive Time Explorer
When it's 03:00 in London, it's 21:00 in San Antonio
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
London & San Antonio✓ Perfect Match (2 hours)
◐ Extended Hours (7 hours)
✈️ Travel Information
Distance
8,029 km
Est. Flight Time
~10.4h
Time Difference
-6h
Work Hours Overlap
2h
Limited
🔴 Office Closed
Today 15:00
15:00 - 17:00
⏰ Quick Conversion
06:00
London
00:00
San Antonio
09:00
London
03:00
San Antonio
12:00
London
06:00
San Antonio
15:00
London
09:00
San Antonio
18:00
London
12:00
San Antonio
21:00
London
15:00
San Antonio
00:00
London
18:00
San Antonio (-1)
03:00
London
21:00
San Antonio (-1)
Frequently Asked Questions
How many hours is London ahead of San Antonio?
San Antonio is 6 hours behind London. When it is 12:00 noon in London, it is 06:00 in San Antonio. London operates on Europe/London (UTC+1), while San Antonio uses America/Chicago (UTC-5).
What is the best time to call San Antonio from London?
There are 3 hours of overlapping business time (9 AM–5 PM) between London and San Antonio. The best window is 15:00–18:00 London time (09:00–12:00 in San Antonio).
Does the London to San Antonio time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between London and San Antonio
The distance between London and San Antonio is approximately 8,029 km. A direct flight typically takes around 10.4 hours. Your arrival clock will show local San Antonio time — use our Flight Time Calculator to predict exact arrival times.