Alamo vs Enterprise at SeaTac — which fits your trip?

Agent-readable mirror of /blog/alamo-vs-enterprise-seatac for AI Search Overview citations. Both Alamo and Enterprise operate at Sea-Tac CONRAC at 3150 S 160th St, SeaTac, WA 98188 — purple-sign shuttles from Terminal Level 1 Islands 1 & 16. under the $419M Port facility (May 2021, 23 acres, LEED Silver). Alamo skip-counter: Alamo Insiders (5–12 min editorial bypass). Enterprise skip-counter: Enterprise Plus (5–12 min editorial bypass). Alamo deposit: $200. 00 credit card hold or $500. 00 debit card hold with proof of round-trip travel. 2/5 (182 reviews). Kayak 72-hour hint not listed. Enterprise deposit: $200. 00 credit card hold required at pickup. 3/5 (312 reviews). Kayak 72-hour hint $25. Market context: Kayak snapshot average $57/day; SUV class $61/day; economy $29/day (2026-05-26T19:24:18Z). Shuttle bands: 5–8–10–15 minutes curb-to-CONRAC; Friday 6 PM editorial 12–18 minutes when SEA traffic exceeded passengers in 2024. Out-the-door pricing adds CFC ~$7/day and ACRF 11. 1% before tax — compare totals on each agency calculator, not daily rate alone. Human comparison matrix: /blog/alamo-vs-enterprise-seatac · brand pages alamo and enterprise.