How far is Seattle, WA from SeaTac, WA?
The driving distance from Seattle, WA to SeaTac, WA is about 12.8 miles (20.6 km), with a travel time of about 00h 21m by car.
- The straight-line flight distance is about 11.1 miles (17.8 km).
- For a round trip, plan for roughly 00h 42m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM PDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 21m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Seattle and SeaTac.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and SeaTac.
-
1
Start on the route
9 m · 8 sec
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2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
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3
Turn right onto 4th Avenue
94 m · 15 sec · 4th Avenue
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4
Turn right onto Spring Street
647 ft · 26 sec · Spring Street
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5
Take the ramp right toward I 5 South: Portland
1151 ft · 28 sec
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6
Continue straight
3180 ft · 1 min
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7
Keep slight left to continue on I 90 East, I 5 South: Bellevue, Portland
45 m · 2 sec
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8
Keep slight right to continue on I 5 South: Tacoma, Portland
589 ft · 8 sec
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9
Keep slight left to continue on Airport Way
93 m · 4 sec
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10
Keep slight left to continue on I 5 South: Sea-Tac Airport
6.3 mi · 8 min
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11
Take the exit slight right toward Boeing Access Road, East Marginal Way
1455 ft · 35 sec
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12
Turn right onto Boeing Access Road
1986 ft · 44 sec · Boeing Access Road
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13
Keep slight left to continue on Pacific Highway South
66 m · 7 sec
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14
Continue straight
38 m · 3 sec
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15
Turn slight left onto Tukwila International Boulevard
3 mi · 5 min · Tukwila International Boulevard
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16
Continue on International Boulevard
1.2 mi · 2 min · International Boulevard
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17
Turn left onto South 170th Street
1073 ft · 32 sec · South 170th Street
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18
Turn right onto 32nd Avenue South
949 ft · 36 sec · 32nd Avenue South
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19
Turn right
16 m · 6 sec
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20
Turn right
43 m · 10 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Seattle and SeaTac.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
I 5 South
Keep slight left to continue on I 5 South: Sea-Tac Airport
6.27 mi · 00h 08m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving Seattle and Mostly Sunny near SeaTac.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to SeaTac?
The road trip is about 12.8 miles (20.6 km) and usually takes 00h 21m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
White Center is a useful midpoint, sitting about 6.4 miles from Seattle and 6.4 miles from SeaTac.
How much longer is the road route than the straight-line distance?
The direct path is about 11.1 miles (17.8 km), while the road route adds roughly 1.7 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM PDT. If you want a more comfortable same-day return, try to leave by 7:48 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.35 one way or $4.71 round trip. Estimated CO2 is about 4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Seattle and Mostly Sunny near SeaTac.
Stop Ideas Near White Center
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Tukwila Community Center
Renton City Human Services
Renton City Hall
Renton Police Department
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to White Center.
King Street Station
Tukwila station
Seattle (Ferry - Pier 69), Washington
Tacoma Dome Station
Flight Path Map
This map shows the direct air route between Seattle and SeaTac. Straight-line distance: 11.05 mi (17.79 km).
#1 Seattle
The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
| Population | 769,714 |
| Coordinates | 47.6062100, -122.3320700 |
| Altitude | 56 |
| Country | United States |
#2 SeaTac
Airport in SeaTac, Washington, USA
| Population | 28,904 |
| Coordinates | 47.4484600, -122.2921700 |
| Altitude | 80 |
| Country | United States |
End: SeaTac (-122.29217, 47.44846)
Estimated Travel Time
Distance: 21 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 25m |
| 40 mph (64.37 km/h) | 00h 19m |
| 50 mph (80.47 km/h) | 00h 15m |
| 60 mph (96.56 km/h) | 00h 12m |
| 70 mph (112.65 km/h) | 00h 10m |
| 80 mph (129 km/h) | 00h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $2.35 | $4.71 |
| Mid-grade | $5.57 | $2.51 | $5.01 |
| Premium | $5.77 | $2.60 | $5.19 |
| Diesel | $5.47 | $2.46 | $4.92 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Washington · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.