Allentown to London Time Difference
London is 5 hours ahead of Allentown. When it is noon in Allentown, it is 17:00 in London.
New York (UTC-4) → London (UTC+1)
🕐 Interactive Time Explorer
When it's 20:00 in Allentown, it's 01:00 in London
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Allentown & London✓ Perfect Match (3 hours)
◐ Extended Hours (7 hours)
✈️ Travel Information
Distance
5,675 km
Est. Flight Time
~7.7h
Time Difference
+5h
Work Hours Overlap
3h
Limited
🔴 Office Closed
Tomorrow 09:00
09:00 - 12:00
⏰ Quick Conversion
06:00
Allentown
11:00
London
09:00
Allentown
14:00
London
12:00
Allentown
17:00
London
15:00
Allentown
20:00
London
18:00
Allentown
23:00
London
21:00
Allentown
02:00
London (+1)
00:00
Allentown
05:00
London
03:00
Allentown
08:00
London
Frequently Asked Questions
How many hours is Allentown behind London?
London is 5 hours ahead of Allentown. When it is 12:00 noon in Allentown, it is 17:00 in London. Allentown operates on America/New York (UTC-4), while London uses Europe/London (UTC+1).
What is the best time to call London from Allentown?
There are 3 hours of overlapping business time (9 AM–5 PM) between Allentown and London. The best window is 09:00–12:00 Allentown time (14:00–17:00 in London).
Does the Allentown to London 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 Allentown and London
The distance between Allentown and London is approximately 5,675 km. A direct flight typically takes around 7.7 hours. Your arrival clock will show local London time — use our Flight Time Calculator to predict exact arrival times.