Is a 3-Hour Layover Enough at SEA?
Seattle-Tacoma International — Seattle
✅
Safe — 3% miss rate
Yes — a 3 hours layover at SEA is enough.
3%
Miss Rate
81%
On-Time Rate
58m
Avg Delay
Why 180 Minutes Is Safe at SEA
Your 180-minute connection at SEA looks solid. You have plenty of buffer even if your first flight is moderately late.
·Airport reliability: SEA has a 81% on-time rate
+Comfortable buffer: Your 180-minute layover is well above the 55-minute minimum
−High average delay: When flights are late at SEA, the average delay is 58 minutes
−Long taxi times: Planes at SEA typically sit on the runway for 20 minutes before takeoff
Minimum Connection Time at SEA
55m
Domestic
120m
International
Your 180-minute layover gives you 125 minutes of buffer above the 55-minute domestic minimum. That's a comfortable buffer for most situations.
Terminal Transfers at SEA
How to transfer: Underground train connects main terminal to North Satellite; walking to South Satellite
Transfer time: 5-12 minutes between most areas
✓TSA re-screening: Not required between terminals — All concourses and satellites are connected post-security. No re-screening needed for any domestic or international connection.
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