Seattle-Tacoma Airport has a wide range of transport prices, from $3 on the train up to a private car. Only two of those numbers are actually published tariffs — the train fare and the taxi meter. Everything else is set by an operator or an app and moves. Here is an honest breakdown of what is fixed and what is not.
Light Rail — $3.00 per person
The Link Light Rail to downtown Seattle costs $3.00 per adult. Children under 6 ride free. It takes about 40 minutes, runs frequently, and avoids traffic entirely. This is the cheapest option by a wide margin and is genuinely practical for travelers with light luggage. From the downtown station, you can walk or take a local bus to your hotel.
Taxi — metered, with a $20 airport minimum
There is no regulated $40 flat rate from SEA to downtown, despite how often that figure is repeated. The joint City of Seattle / King County rule that sets taxi fares states plainly that it "does not establish any flat rate" between downtown Seattle and the airport. A dispatch company may choose to offer one, but it is not a regulated fare and you should not count on it.
What is regulated is the meter (City of Seattle Director's Rule FOR-HIRE TRANSPORTATION-11-2025 / King County Public Rule FHT-10-2025-PR, in force since 6 August 2025):
| Charge | Rate |
|---|---|
| Drop (first 1/9 mile) | $2.60 |
| Each additional 1/9 mile | $0.30 (i.e. $2.70 per mile) |
| Time below 11 mph | $0.30 per 36 seconds (i.e. $0.50 per minute) |
| Each extra passenger beyond two | $0.50 (children under 12 excluded) |
| Minimum fare, any trip leaving SEA | $20.00 |
That tariff is all you need to estimate any trip. Downtown Seattle is roughly 14 miles (22 km), which puts the meter near $39 before waiting time — so a clear run lands in the low $40s, and a slow crawl up I-5 costs more, because every minute under 11 mph adds $0.50. Tipping 15-20% is customary on top.
For destinations outside downtown the same meter applies; run the numbers above against the distance rather than trusting a fixed figure from a guide. Rates are revised periodically — check the posted tariff before you travel.
Ride-hailing — dynamically priced
Uber and Lyft do not publish a tariff. Their fares are set by demand, which is why any fixed range you read is out of date the moment it is written. During rush hours, bad weather or a big event, expect to pay more than a metered taxi; off-peak, often less. The only number that means anything is the estimate in the app at the moment you request the ride — check it against the taxi meter above before committing.
Shared shuttle — per person, operator-set
Shared ride shuttles pick up from the arrivals level. They charge per person, which usually undercuts a taxi for a solo traveller, but the journey is longer (60-90 minutes to downtown) because of multiple hotel stops. Operators set their own fares and change them, so get the current price from the shuttle desk rather than from a guide. Worth considering for budget-conscious solo travellers who do not mind the extra time.
Pre-booked transfer — fixed at booking
A private transfer is quoted per vehicle and fixed when you book, so there is no surge pricing and no meter running while you sit in traffic. Sedans, SUVs and minivans are priced differently, and longer runs (Bellevue, or Anacortes for the San Juan Islands ferry) cost more. Because the price depends on vehicle, date and destination, the honest answer is to get a live quote rather than trust a printed range — the advantage is that whatever you are quoted is what you pay.
Cost comparison for common scenarios
Solo traveller to downtown: Light Rail at $3.00 is the obvious winner if you are travelling light. A taxi is the door-to-door alternative, on the meter.
Couple to downtown: Light Rail is $6.00 total. A taxi is charged per car, not per head, so the gap narrows — but the train still wins unless you have lots of luggage.
Family of four to downtown: Light Rail is $9.00 (under-6s ride free). A taxi is one metered fare for the whole family, which is where it starts to compete, though the fare rises with I-5 traffic.
Group of four to Bellevue: One pre-booked vehicle is simpler to coordinate than multiple cars, and the price is agreed before you land.