How to get from Union Station to Seatac by bus?

Union Station to Seatac - Bus Schedule

The 501 bus from Union Station to Seatac runs from 5:12 AM to 5:20 PM, with departures every 1 hr-7 hr. The trip takes about 1 hr 9 min, with regular service throughout the operating hours.

From Union Station to Seatac by bus

To get from Union Station to Seatac in Seattle - Tacoma, WA, you’ll need to take 3 bus lines: take the 501 bus from Pacific Ave & S 17th St station to Tacoma Dome Station - Zone C station. Next, you’ll have to switch to the 574 bus and finally take the A LINE bus from Federal Way Downtown Station - Bay 8 station to International Blvd & S 188th St station. The total trip duration for this route is approximately 1 hr 9 min. The ride fare is $6.75. The bus schedule from Union Station may change. We recommend you check the updated bus schedule to Seatac on the Moovit app.

69min$6.75
Walk to bus stationBus - 501
501
Bus - 574574
Bus - A LINE
Leaves from Pacific Ave & S 17th St

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Pacific Ave & S 17th St
    ID 4133
    120 yd • 2 min
  • 2
    Bus - 501501
    Wait for bus
    501
    Milton / Federal Way Via Valley Ave / 70th
  • 3
    Ride to bus station
    Ride to bus station
    Tacoma Dome Station - Zone C
    ID 4171
    7 min
  • 4
    Walk to bus station
    Walk to bus station
    Tacoma Dome Station - Zone A
    ID 3516
    70 yd • 1 min
  • 5
    Bus - 574574
    Wait for bus
    574
    Federal Way Downtown Station
  • 6
    Ride to bus station
    Ride to bus station
    Federal Way Downtown Station - Bay 4
    ID 4693
    22 min
  • 7
    Walk to bus station
    Walk to bus station
    Federal Way Downtown Station - Bay 8
    ID 85538
    50 yd • 1 min
  • 8
    Bus - A LINE
    Wait for bus
    A LINE
    Tukwila Link Station International Boulevard
  • 9
    Ride to bus station International Blvd & S 188th St
    Ride to bus station
    International Blvd & S 188th St
    ID 60880
    31 min
*Duration based on 8am traffic
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Public transit directions from Union Station to Seatac

The distance between Union Station, Seattle - Tacoma, WA and Seatac, Seattle - Tacoma, WA is approximately 20.5 mi, which can typically be travelled in 69 min. Moovit will show you the directions from Union Station to Seatac by bus, so no matter how you choose to travel in Seattle - Tacoma, WA – you will always have plenty of easy options.

Bus schedule from Union Station to Seatac

To check the bus schedule from Union Station to Seatac using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Union Station) and destination (Seatac), then select the desired date and time of travel. Moovit will show all available bus routes, estimated travel times, and any required transfers. You can view detailed departure and arrival times for each bus, as well as real-time updates for delays or changes. Use this information to plan your trip and stay up to date with the latest bus schedules.

Related Routes

Questions & Answers

  • What is the fastest way to get from Union Station to Seatac?

    The fastest way takes 69 minutes, using Bus line 501, Bus line 574, Bus line A LINE.

  • Is there a direct bus between Union Station and Seatac?

    No, you’ll have to take 3 bus lines in total. The total travelling time is 1 hr 9 min.

  • Which bus line goes from Union Station to Seatac?

    The 501 bus line goes from Pacific Ave & S 17th St station near Union Station in Tacoma to Tacoma Dome Station - Zone C station. From there you’ll have to take one bus line till Tacoma Dome Station - Zone C station near Seatac in Seattle - Tacoma, WA.

  • How long does it take to travel from Union Station to Seatac by bus?

    The total travel time between Union Station in Tacoma and Seatac in Seattle - Tacoma, WA by bus is about 1 hr 9 min.

  • Where do I get on the bus near Union Station to get to Seatac?

    Get on the 501 bus from the Pacific Ave & S 17th St stop near Union Station in Tacoma.

  • Where do I get off the bus when travelling between Union Station and Seatac?

    Get off the bus at the Tacoma Dome Station - Zone C stop, which is closest to Seatac in Seattle - Tacoma, WA.

  • How much is the bus fare from Union Station to Seatac?

    The ride from Union Station to Seatac costs $6.75.

Popular Routes