United States
United Kingdom
Seattle to London Time Difference
London is 8 hours ahead of Seattle
Seattle vs London — At a Glance
Seattle to London — Hour-by-Hour
About Seattle and London
Seattle (population: 0.74M) is known for Amazon, Microsoft, Boeing, coffee culture, and the Pacific Northwest. London (population: 8.8M) is known for global finance, the City of London, Buckingham Palace, and the world's oldest underground railway.
Business Hours Overlap
With a 8-hour difference, teams in Seattle and London 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 London (+44) from Seattle (+1), be mindful of the 8-hour gap. The safest window is early morning in Seattle (8–10 AM) to reach people during waking hours.
Currency
Seattle uses USD while London uses GBP. Check current exchange rates before making payments or transferring funds between the two cities.
Language
Seattle and London share English as a common language, which simplifies business communication.
Use our world clock tool to compare Seattle and London visually, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between Seattle and London?
London, United Kingdom is 8 hours ahead of Seattle, United States. Seattle is in the America/Los Angeles timezone (UTC-7) and London is in the Europe/London timezone (UTC+1).
When it's noon in Seattle, what time is it in London?
When it's 12:00 PM (noon) in Seattle, it's 8:00 PM in London.
What is the best time to call London from Seattle?
The best time to call London from Seattle is during the overlapping business hours. When it's 9 AM in Seattle, it's 5:00 PM in London. Aim for late morning to early afternoon in Seattle for the best chance of reaching someone during working hours.
What currency does London use?
London, United Kingdom uses GBP. Seattle uses USD. You will need to check the current exchange rate for transactions between the two.
What language is spoken in London?
The primary language in London is English. Seattle also speaks English, making communication easier.
How do I dial London from Seattle?
To call London from Seattle, dial your international access code followed by +44 and the local number. Seattle uses country code +1 and London uses +44.
