Sourdough Airport
Daylight today(Jul 14, 2026, local time)
About 15h 46m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Sourdough Airport
Sourdough Airport is a small airport in Tonasket, United States. It sits at an elevation of 2,640 ft (805 m) and has 1 runway, the longest 2,650 ft / 808 m. It observes America/Los Angeles local time. The nearest airport is Hart Ranch Airport (25WA), about 1.9 nm to the se.
Summary generated from this airport’s structured data — reference only.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (1)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 12 / 30 | 2,650 ft / 808 m | 60 ft | Turf | Unlit | Open |
Airspace in this area(3)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| OKANOGAN A INT & BY NOTAM | Special use | Danger | 9000 ft MSL | 17999 ft MSL |
| OKANOGAN C INT & BY NOTAM | Special use | Danger | 300 ft GND | 8999 ft MSL |
| EXCLUDED FROM OKANOGAN C | Special use | Danger | GND | 1500 ft GND |
Approximate bounding-box match from OpenAIP · all United States airspace. Reference only — consult official charts for exact boundaries and status.
Nearby airports
Great-circle distance and true bearing from Sourdough Airport.
Frequently asked questions
Where is Sourdough Airport located?
Sourdough Airport is small airport located in Tonasket, United States, at an elevation of 2,640 ft (805 m).
How many runways does Sourdough Airport have?
Sourdough Airport has 1 runway, the longest being 2,650 ft / 808 m.
What time zone is Sourdough Airport in?
Sourdough Airport is in the America/Los Angeles time zone (UTC-07:00).
What is the magnetic variation at Sourdough Airport?
The magnetic variation (declination) at Sourdough Airport is approximately 14.4° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Sourdough Airport?
The nearest airport to Sourdough Airport is Hart Ranch Airport (25WA), about 1.9 nm to the se, followed by Fowler Field and Tonasket Municipal Airport.
Is the information on this page suitable for flight planning?
No. Sourdough Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.