Seattle is the largest city in Washington state and the Pacific Northwest, with about 785,000 residents. Sea-Tac Airport is 14 miles south of downtown and is linked by Link light rail. Summers are mild and fairly dry, and winters are cool and wet.
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14 miles (23 km) from the city centre. 52.7 million passengers in 2025
| How | Route | Time | Cost |
|---|---|---|---|
| Train | Sound Transit Link 1 Line from SeaTac/Airport station to Westlake in downtown Seattle | about 38m | $3.00 one way |
This is domestic travel for US citizens: no passport or visa is needed, but travelers 18 and over need a REAL ID-compliant license or another accepted ID to fly.
Since May 7, 2025, TSA requires a REAL ID-compliant driver's license (star marking), an enhanced license, or an alternative such as a valid US passport or military ID at airport checkpoints. Travelers under 18 do not need ID when flying with a companion who has acceptable ID.
July and August are the warmest and driest months, with average highs of about 77 F. Winters are cool, with January to March highs of about 48 to 54 F.
Busiest: Jul-Aug. Quieter shoulder season: May-Jun, Sep.
| Month | Avg high | Avg low |
|---|---|---|
| Jan | 48°F (9°C) | 38°F (3°C) |
| Feb | 50°F (10°C) | 38°F (3°C) |
| Mar | 54°F (12°C) | 40°F (4°C) |
| Apr | 59°F (15°C) | 43°F (6°C) |
| May | 66°F (19°C) | 49°F (9°C) |
| Jun | 71°F (22°C) | 53°F (12°C) |
| Jul | 77°F (25°C) | 57°F (14°C) |
| Aug | 78°F (26°C) | 57°F (14°C) |
| Sep | 72°F (22°C) | 54°F (12°C) |
| Oct | 60°F (16°C) | 47°F (8°C) |
| Nov | 52°F (11°C) | 41°F (5°C) |
| Dec | 47°F (8°C) | 37°F (3°C) |
Seattle is served by Seattle-Tacoma International Airport (SEA). Seattle-Tacoma International Airport handled about 52.7 million passengers in 2025.
This is domestic travel for US citizens: no passport or visa is needed, but travelers 18 and over need a REAL ID-compliant license or another accepted ID to fly. Since May 7, 2025, TSA requires a REAL ID-compliant driver's license (star marking), an enhanced license, or an alternative such as a valid US passport or military ID at airport checkpoints. Travelers under 18 do not need ID when flying with a companion who has acceptable ID.
July and August are the warmest and driest months, with average highs of about 77 F. Winters are cool, with January to March highs of about 48 to 54 F.
Sound Transit Link 1 Line from SeaTac/Airport station to Westlake in downtown Seattle, about 38 minutes, $3.00 one way.
Seattle uses the US dollar (USD).
Flying out of Seattle? See destinations from Seattle
Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.