Seattle–Tacoma International Airport

Airport Airport

IATA Code
SEA
ICAO Code
KSEA
Airport Type
Large Airport
Class
International

Seattle-Tacoma International Airport (SEA, “Sea-Tac”) is the principal airport for the Seattle metro area and a major hub for Alaska Airlines and a key base for other carriers. Passenger traffic is in the tens of millions annually. The airport has a single central terminal complex with multiple concourses.

Seattle–Tacoma International Airport
Elevation: 131 m
47.4479, -122.3103

Terminal Guide for Seattle-Tacoma International Airport #

SEA has one central terminal with multiple concourses (commonly referred to as Concourses A, B and C) branching from the main ticketing and baggage hall; concourses are connected airside and landside via walkways and people‑movers. Ground transport, rental cars and hotels are immediately adjacent to the terminal complex.

Getting to and From Seattle-Tacoma International Airport #

Downtown Seattle is about 20 miles (≈32 km) by road; typical travel time on the Link light rail is 35-40 minutes and by car/taxi 25-45 minutes depending on traffic.

  • Light rail: Sound Transit Link light rail serves the airport station adjacent to the terminal and runs frequently to downtown Seattle; fares are modest (card or app payment).
  • Taxis / rideshare: Taxis and app services operate from designated curb areas; fares vary with distance and traffic.
  • Shuttles / buses: Shared shuttles and airport buses connect to hotels and suburban locations; schedule and booking vary by operator.

Facilities, Shopping, and Dining at Seattle-Tacoma International Airport #

SEA offers a wide range of services: multiple airline and independent lounges, sit‑down restaurants and fast‑casual outlets, duty‑free shopping (international departures), free/limited Wi‑Fi, charging points and family facilities. Accessibility services and medical assistance are available; baggage services and shops operate throughout the day.

Hotels and Layovers at Seattle-Tacoma International Airport #

  • Seattle Airport Marriott - adjacent to the terminal area; book via marriott.com.

Tips for Seattle–Tacoma International Airport #

  • The Link light rail is often the fastest and cheapest way into downtown Seattle during daytime - it connects the airport to downtown in about 35-40 minutes.
  • If you have a tight connection check concourse locations before you arrive; Alaska Airlines operates large operations and many gates are in Concourse A and C.
  • Consider TSA PreCheck or Clear (if enrolled) to speed security at peak times.

Weather & Climate near Seattle–Tacoma International Airport #

Climate

Seattle–Tacoma International Airport's climate is classified as Warm-Summer Mediterranean - Warm-Summer Mediterranean climate with mild summers (peaking in August) and cold winters (coldest in December). Temperatures range from 1°C to 24°C. Moderate rainfall (987 mm/year).

Air Quality: AQI 30 Good
Best Time to Visit
JulyAugustSeptember
Temperature & Rainfall
Temperature Range
38°
Warmest Month
-10°
Coldest Month
Monthly Conditions

January

January is cold with highs of 8°C and lows of 1°C. Significant rainfall (138 mm) and mostly overcast skies.

38 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

138 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.8h daylight

February

February is cold with highs of 10°C and lows of 2°C. Significant rainfall (109 mm) and mostly overcast skies.

50 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
87%
Humidity
Very Humid

Weather

109 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.2
UV Index
Low
10.1h daylight

March

March is cold with highs of 12°C and lows of 3°C. Significant rainfall (103 mm) and mostly overcast skies.

48 Poor

Comfort

Feels Like Cold
C
Temperature
12°
85%
Humidity
Very Humid

Weather

103 mm
Rainfall
3.3 m/s
Wind
Light Breeze
0.5
UV Index
Moderate
11.8h daylight

April

April is cold with highs of 14°C and lows of 5°C. Moderate rainfall (70 mm) and mostly overcast skies.

54 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
14°
82%
Humidity
Very Humid

Weather

70 mm
Rainfall
3.3 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
13.5h daylight

May

May is cool with highs of 18°C and lows of 8°C. Moderate rainfall (46 mm) and mostly overcast skies.

66 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
18°
80%
Humidity
Very Humid

Weather

46 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.3
UV Index
High
14.9h daylight

June

June is cool with highs of 21°C and lows of 10°C. Moderate rainfall (39 mm) and mostly overcast skies.

70 Very Good

Comfort

16°
Feels Like Cool
16°C
Temperature
10° 21°
80%
Humidity
Very Humid

Weather

39 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.6
UV Index
Very High
15.7h daylight

July

July is mild with highs of 24°C and lows of 12°C. The driest month with just 23 mm.

90 Ideal

Comfort

18°
Feels Like Mild
18°C
Temperature
12° 24°
77%
Humidity
Very Humid

Weather

23 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.8
UV Index
Very High
15.3h daylight

August

August is the warmest month with highs of 24°C and lows of 12°C. Light rainfall and partly cloudy skies.

88 Excellent

Comfort

18°
Feels Like Mild
18°C
Temperature
12° 25°
76%
Humidity
Very Humid

Weather

29 mm
Rainfall
3.0 m/s
Wind
Light Breeze
1.4
UV Index
High
14.1h daylight

September

September is cool with highs of 21°C and lows of 10°C. Moderate rainfall (43 mm) and partly cloudy skies.

77 Very Good

Comfort

16°
Feels Like Cool
16°C
Temperature
10° 21°
78%
Humidity
Very Humid

Weather

43 mm
Rainfall
2.8 m/s
Wind
Calm
0.9
UV Index
Moderate
12.4h daylight

October

October is cool with highs of 16°C and lows of 6°C. Regular rainfall (83 mm) and mostly overcast skies.

61 Good

Comfort

11°
Feels Like Cool
11°C
Temperature
16°
84%
Humidity
Very Humid

Weather

83 mm
Rainfall
2.8 m/s
Wind
Calm
0.4
UV Index
Low
10.7h daylight

November

November is cold with highs of 10°C and lows of 4°C. Significant rainfall (149 mm) and mostly overcast skies.

48 Poor

Comfort

Feels Like Cold
C
Temperature
10°
89%
Humidity
Very Humid

Weather

149 mm
Rainfall
3.3 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.2h daylight

December

December is the coolest month with highs of 7°C and lows of 1°C. The wettest month with heavy rain (155 mm) and mostly overcast skies.

34 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

155 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.3h daylight

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