United Kingdom
United States
London to Seattle Time Difference
Seattle is 8 hours behind London
London vs Seattle — At a Glance
London to Seattle — Hour-by-Hour
About London and Seattle
London (population: 8.8M) is known for global finance, the City of London, Buckingham Palace, and the world's oldest underground railway. Seattle (population: 0.74M) is known for Amazon, Microsoft, Boeing, coffee culture, and the Pacific Northwest.
Business Hours Overlap
With a 8-hour difference, teams in London and Seattle typically rely on a narrow overlap window for real-time meetings and use async tools like Slack or email for the rest.
Calling Between Cities
When calling Seattle (+1) from London (+44), be mindful of the 8-hour gap. The safest window is late afternoon in London (4–6 PM) to reach people during waking hours.
Currency
London uses GBP while Seattle uses USD. Check current exchange rates before making payments or transferring funds between the two cities.
Language
London and Seattle share English as a common language, which simplifies business communication.
Use our world clock tool to compare London and Seattle visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between London and Seattle?
Seattle, United States is 8 hours behind London, United Kingdom. London is in the Europe/London timezone (UTC+1) and Seattle is in the America/Los Angeles timezone (UTC-7).
When it's noon in London, what time is it in Seattle?
When it's 12:00 PM (noon) in London, it's 4:00 AM in Seattle.
What is the best time to call Seattle from London?
The best time to call Seattle from London is during the overlapping business hours. When it's 9 AM in London, it's 1:00 AM in Seattle. Aim for late morning to early afternoon in London for the best chance of reaching someone during working hours.
What currency does Seattle use?
Seattle, United States uses USD. London uses GBP. You will need to check the current exchange rate for transactions between the two.
What language is spoken in Seattle?
The primary language in Seattle is English. London also speaks English, making communication easier.
How do I dial Seattle from London?
To call Seattle from London, dial your international access code followed by +1 and the local number. London uses country code +44 and Seattle uses +1.
