Time Difference: London to Seattle
Click a time to convert
London vs Seattle timezone guide
London (UK) uses the Europe/London timezone at UTC+0, while Seattle (US) uses America/Los_Angeles at UTC-8. This means Seattle is 8 hours behind London (based on standard offsets — the live difference above accounts for daylight saving time).
Best meeting times between London and Seattle
Standard 9-to-5 working hours in London and Seattle do not overlap. To meet synchronously, one side will need to start early or stay late — see the hour-by-hour planner below for the least disruptive options.
Hour-by-hour planner
| London | Seattle | Status |
|---|---|---|
| 6am | 10pm | London early, Seattle late evening |
| 7am | 11pm | London early, Seattle late evening |
| 8am | 12am | London early, Seattle asleep |
| 9am | 1am | London working hours, Seattle asleep |
| 10am | 2am | London working hours, Seattle asleep |
| 11am | 3am | London working hours, Seattle asleep |
| 12pm | 4am | London working hours, Seattle asleep |
| 1pm | 5am | London working hours, Seattle asleep |
| 2pm | 6am | One side outside 9-to-5 but still awake |
| 3pm | 7am | One side outside 9-to-5 but still awake |
| 4pm | 8am | One side outside 9-to-5 but still awake |
| 5pm | 9am | One side outside 9-to-5 but still awake |
| 6pm | 10am | One side outside 9-to-5 but still awake |
| 7pm | 11am | One side outside 9-to-5 but still awake |
| 8pm | 12pm | One side outside 9-to-5 but still awake |
| 9pm | 1pm | One side outside 9-to-5 but still awake |
| 10pm | 2pm | London late evening, Seattle working hours |
Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.
Daylight saving time between London and Seattle
Both cities observe daylight saving time, but on different schedules. This creates short windows each year where the usual difference of 8 hours ahead temporarily shifts.
- Mar 8 → Mar 29Difference temporarily 7 hours ahead.
- Oct 25 → Nov 1Difference temporarily 7 hours ahead.
London transitions on March 29, 2026 and October 25, 2026. Seattle transitions on March 8, 2026 and November 1, 2026.
Distance between London and Seattle
London and Seattle are 7,700 km apart along the great-circle route. A direct flight takes roughly ~10h 3m, depending on aircraft type, winds, and routing.