Seattle, United States → Portland, United States · ✈ 48 min · 🚗 3h 48min
126 nautical miles · Time difference: Same timezone · Direction: south
The distance from Seattle to Portland is 234 km (145 miles). The fastest way to travel is by car. A direct flight takes approximately 48 min.
The straight-line distance from Seattle, United States to Portland, United States is approximately 234 kilometers (145 miles or 126 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Portland is located south of Seattle. Seattle is in North America, in the Pacific Northwest region of United States, while Portland is in North America, in Pacific Northwest, United States. Both cities are in North America.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 234 km | ~48 min | Quick but may not save time with airport procedures |
| 🚗 Drive | ~304 km | ~3h 48min | Convenient and flexible |
| 🚂 Regular Train | ~281 km | ~2h 20min | Budget-friendly option |
Our recommendation: car is typically the best way to travel from Seattle to Portland. At this distance, driving gives you the most flexibility and avoids airport overhead.
Based on an estimated road distance of 304 km, fuel costs for driving from Seattle to Portland are approximately $24–$46 USD (at $0.08–$0.15 per km, depending on vehicle efficiency and local fuel prices). Additional costs may include tolls, parking, and accommodation for longer trips.
Seattle is a major city in United States with a population of approximately 737,015. Located in the Pacific Northwest region, it is an important hub in North America. Despite its smaller size, Seattle plays an important regional role in United States and attracts visitors year-round.
→ See all distances from Seattle
Portland is a notable city in United States with a population of approximately 652,503. Situated in the Pacific Northwest region, it serves as a key destination in North America. Portland is a popular destination in the Pacific Northwest region of United States, known for its unique character and attractions.
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234 km is roughly the distance of a short regional flight or a 3-4 hour drive. For comparison, it's about the distance from London to Paris (344 km). At this range, ground transport often competes with flying when you factor in airport time.
The distance from Seattle to Portland (234 km) is roughly equivalent to 6 marathon distances laid end to end.
At just 234 km within United States, the Seattle–Portland corridor is well-suited for a day trip or weekend getaway. Consider driving for flexibility, or check regional rail connections for a hassle-free journey.
See how the Seattle to Portland distance compares to similar routes:
The straight-line distance from Seattle to Portland is approximately 234 kilometers (145 miles, 126 nautical miles).
A direct flight takes approximately 48 min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 3h 48min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Portland is approximately Same timezone compared to Seattle.
The estimated road distance is approximately 304 km, which is about 30% longer than the 234 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 7, 2026.