London to Allentown Time Difference
Allentown is 5 hours behind London. When it is noon in London, it is 07:00 in Allentown.
London (UTC+1) → New York (UTC-4)
🕐 Interactive Time Explorer
When it's 16:00 in London, it's 11:00 in Allentown
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
London & Allentown✓ 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 14:00
14:00 - 17:00
⏰ Quick Conversion
06:00
London
01:00
Allentown
09:00
London
04:00
Allentown
12:00
London
07:00
Allentown
15:00
London
10:00
Allentown
18:00
London
13:00
Allentown
21:00
London
16:00
Allentown
00:00
London
19:00
Allentown (-1)
03:00
London
22:00
Allentown (-1)
Frequently Asked Questions
How many hours is London ahead of Allentown?
Allentown is 5 hours behind London. When it is 12:00 noon in London, it is 07:00 in Allentown. London operates on Europe/London (UTC+1), while Allentown uses America/New York (UTC-4).
What is the best time to call Allentown from London?
There are 4 hours of overlapping business time (9 AM–5 PM) between London and Allentown. The best window is 14:00–18:00 London time (09:00–13:00 in Allentown).
Does the London to Allentown 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 Allentown
The distance between London and Allentown is approximately 5,675 km. A direct flight typically takes around 7.7 hours. Your arrival clock will show local Allentown time — use our Flight Time Calculator to predict exact arrival times.