Nonstop flight route between San Diego, California, United States and Thorne Bay, Alaska, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from SDM to KTB:
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- About this route
- SDM Airport Information
- KTB Airport Information
- Facts about SDM
- Facts about KTB
- Map of Nearest Airports to SDM
- List of Nearest Airports to SDM
- Map of Furthest Airports from SDM
- List of Furthest Airports from SDM
- Map of Nearest Airports to KTB
- List of Nearest Airports to KTB
- Map of Furthest Airports from KTB
- List of Furthest Airports from KTB
About this route:
A direct, nonstop flight between Brown Field Municipal Airport (SDM), San Diego, California, United States and Thorne Bay Seaplane Base (KTB), Thorne Bay, Alaska, United States would travel a Great Circle distance of 1,764 miles (or 2,840 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the relatively short distance between Brown Field Municipal Airport and Thorne Bay Seaplane Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | SDM / KSDM | 
| Airport Name: | Brown Field Municipal Airport | 
| Location: | San Diego, California, United States | 
| GPS Coordinates: | 32°34'19"N by 116°58'49"W | 
| Area Served: | San Diego, California | 
| Operator/Owner: | City of San Diego | 
| Airport Type: | Public | 
| Elevation: | 526 feet (160 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from SDM | 
| More Information: | SDM Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | KTB / | 
| Airport Name: | Thorne Bay Seaplane Base | 
| Location: | Thorne Bay, Alaska, United States | 
| GPS Coordinates: | 55°41'17"N by 132°32'12"W | 
| Area Served: | Thorne Bay, Alaska | 
| Operator/Owner: | State of Alaska DOT&PF - Southeast Region | 
| Airport Type: | Public | 
| Elevation: | 0 feet (0 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from KTB | 
| More Information: | KTB Maps & Info | 
Facts about Brown Field Municipal Airport (SDM):
- Because of Brown Field Municipal Airport's relatively low elevation of 526 feet, planes can take off or land at Brown Field Municipal Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The furthest airport from Brown Field Municipal Airport (SDM) is Sir Gaëtan Duval Airport (RRG), which is located 11,551 miles (18,590 kilometers) away in Rodrigues Island, Mauritius.
- Tijuana Airport, an airline airport, is just over 1 nmi to the south across the Mexico-United States border, with a similar length and a slightly different runway orientation.
- The closest airport to Brown Field Municipal Airport (SDM) is Tijuana International Airport (TIJ), which is located only 2 miles (4 kilometers) SSE of SDM.
- In 1951 the Navy reopened Brown Field due to increased military activity from the Korean War.
- A precision approach is not possible to either runway end due to rising terrain less than six miles east of the airport.
- Brown Field Municipal Airport (SDM) has 2 runways.
Facts about Thorne Bay Seaplane Base (KTB):
- Thorne Bay Seaplane Base is a state-owned public-use seaplane base serving Thorne Bay, a community in the Prince of Wales-Hyder Census Area of the U.S.
- The furthest airport from Thorne Bay Seaplane Base (KTB) is Port Alfred Airport (AFD), which is located 10,618 miles (17,088 kilometers) away in Port Alfred, South Africa.
- Thorne Bay Seaplane Base (KTB) currently has only 1 runway.
- Because of Thorne Bay Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Thorne Bay Seaplane Base at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The closest airport to Thorne Bay Seaplane Base (KTB) is Hollis Clark Bay Seaplane Base (HYL), which is located only 14 miles (23 kilometers) SSW of KTB.




