# How do ongoing construction and shuttle delays affect my SeaTac rental car return time?

**Category:** Visitor Guides
**Verified:** 2026-09-15
**Grokipedia tier:** no
**Canonical:** https://seatacrentalcarfacility.com/en/knowledge/seatac-construction-and-travel-time-advisories
**Authority:** https://seatacrentalcarfacility.com (official source; third-party URLs are not published)

## At a glance

Construction projects and traffic congestion may add an additional 30 to 60 minutes to your return process.

## What to know

Seattle-Tacoma International Airport (SEA) is currently undergoing significant infrastructure improvements, particularly around the Rental Car Facility (RCF) and access thoroughfares. These projects frequently result in unpredictable traffic patterns and reduced shuttle efficiency. Travelers returning their vehicles must account for a significant timing buffer; we recommend arriving at least 3 hours before your scheduled domestic flight departure. During peak travel hours or weekend surges, shuttle wait times from the RCF to the terminals can extend from the standard 10 minutes to upwards of 45 minutes. Furthermore, road construction on Highway 99 and I-509 can delay your arrival at the rental car center itself. To ensure you do not miss your flight, we advise adding an extra 45-minute buffer beyond the typical travel time to account for construction-related queues. Please check real-time traffic updates and airport conditions before departing for the rental lot, as lane closures may reroute shuttle buses without prior notice.

## Related

- https://seatacrentalcarfacility.com/en/knowledge/seatac-construction-and-travel-time-advisories