Seattle-Tacoma International Airport
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Wait Times by Terminal
Terminal MAIN
Total Queue Time Estimate
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Wait Time History — Seattle-Tacoma International Airport
HistoricalSecurity wait times at SEA over time, based on live sensor and API data.
Skip the security lines with CLEAR+ at 2 terminals:
Skip customs lines with the free Mobile Passport Control app - a great alternative to CLEAR+ for international arrivals.
- No fees: Completely free, no enrollment required
- Fast processing: Submit customs declaration before arrival
- Group travel: Up to 12 people on one submission
- Wide availability: Active at 35+ US airports
Available for US citizens and Canadian visitors at participating airports
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- Priority Pass with 1,400+ lounges worldwide
- TSA PreCheck/Global Entry fee credit ($100)
- Centurion Lounge access at major airports
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Tips for Seattle-Tacoma International Airport
- Arrive at least 90 minutes early for domestic and 150 minutes for international flights.
- Security is typically busiest 6-9 AM and 4-7 PM. Midday flights (11 AM-2 PM) usually have the shortest queues.
- TSA PreCheck is available here. Enrolled travelers typically wait about 4 minutes — roughly half the standard line.
- CLEAR Plus is available in 2 terminals. Members can skip directly to the physical screening area.
- Check in online and use mobile boarding passes to skip the check-in counter and head straight to security.
- US Customs and Border Protection wait times average 22 minutes for arriving international flights. Enroll in Global Entry for faster processing.
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Seattle-Tacoma International Airport (SEA) provides real-time security, check-in, and immigration wait time data. TSA PreCheck and CLEAR availability information included. Sign up for detailed wait time estimates.
Last updated: August 25, 2026
About Seattle-Tacoma International Airport
Seattle-Tacoma International Airport (SEA) serves Seattle in United States. As one of the world's busiest airports, SEA handles millions of passengers annually. During peak travel periods, security lines can extend significantly — plan your arrival time carefully.
Both TSA PreCheck and CLEAR Plus are available at SEA, giving enrolled travelers significantly faster screening. CLEAR is available in 2 terminals.
The busiest travel periods at SEA are Jul, Aug, Dec. During these months, wait times can be 30-50% longer than average. Consider arriving at least 3 hours before international flights during peak season.