Seattle-Tacoma parking
The Pacific Northwest's gateway. Covered garages are popular here for keeping cars out of the rain.
About Seattle-Tacoma
The busiest airport in the Pacific Northwest, and at a record high.
Seattle-Tacoma set a record in 2025 with 52.7 million passengers, above its pre-pandemic peak, with international traffic up strongly while domestic edged down. It is the hub for Alaska Airlines and a major Delta base.
SEA is unusually compact for its size. One terminal, one central garage directly opposite, and a short covered walk between them. That convenience is the airport's real advantage, and it is also why the on-airport garage fills.
Because the airport is hemmed in between I-5 and Puget Sound, there is no room for sprawling on-airport economy lots the way Denver or Dallas have. The off-airport market along International Boulevard fills that gap instead, which makes comparison here more valuable than at airports with cheap on-site overflow.
Getting to SEA
All the practical access info, by car, train, coach and otherwise.
Reach the airport from I-5 via SR-518, or from SR-99 along International Boulevard. Traffic on the I-5 corridor is heavy through most of the day, not just at peak.
Sound Transit's Link light rail runs from downtown Seattle to the SEA/Airport station, connected to the terminal by a walkway. It is often faster than driving at peak.
King County Metro and Sound Transit buses serve the airport's transit centre alongside the light rail station.
The parking garage sits directly opposite the terminal with covered walkways across, so there is no shuttle involved for on-airport parking.
How parking works at Seattle-Tacoma
The main on-airport option is the central garage opposite the terminal, with more than 11,000 spaces covering both short and long stays. Reserved parking can be booked ahead and sits on floor 4. An automated guidance system points you to free bays.
Because the walk from garage to terminal is short and covered, the garage is genuinely convenient, and it prices accordingly. It also fills at peak, which is the main argument for reserving.
The value alternative is the cluster of independent lots along International Boulevard and the surrounding roads, running free shuttles. On longer stays these are usually well below the garage.
Tips travelers wish they'd known
- Reserve if you are travelling at peak. The garage is the only large on-airport option and it does fill, unlike airports with big overflow economy lots.
- Link light rail is a real alternative to parking for a short trip, and it is often quicker than driving through the I-5 corridor.
- Pacific Northwest winters mean a car sitting outside for two weeks in constant damp. Covered parking is worth pricing if you are away long.
- Allow more road time than the distance suggests. Fourteen miles on this corridor is not a fourteen-mile drive at most times of day.
SEA questions, answered
The questions our 24/7 team gets asked most about flying from Seattle-Tacoma.
How early should I arrive at Seattle-Tacoma?+
Two hours for domestic and three for international. Add about 30 minutes if you are parking off-airport for the shuttle and the walk.
Is there a shuttle from the SEA garage to the terminal?+
No shuttle is needed. The garage is directly opposite the terminal and connected by covered walkways, which is one of the airport's genuine conveniences.
Should I reserve parking at SEA?+
At peak, yes. The central garage is the main on-airport option and there is no large economy overflow lot to fall back on if it is full.
Is off-airport parking cheaper at Seattle?+
Usually, and clearly so on longer stays. The independent lots along International Boulevard run free shuttles and compete below the garage rate.