Watching San Diego live
One runway between the bay and downtown, and the steepest approach in the country.
The layout
San Diego International is the busiest single-runway commercial airport in the United States. Runway 9/27 runs east to west along the north shore of San Diego Bay, with the terminals along its south side and the city's downtown a mile to the east. There is no room to grow: Marine Corps Recruit Depot borders the west end, and the hills of Bankers Hill rise to the east.
The new Terminal 1, opened in 2025, replaced the original 1960s building; Terminal 2 handles the rest, including the international flights.
How the flow works
Almost every landing is on runway 27, from the east. The approach is famous: aircraft descend over Balboa Park and the towers of downtown, clearing a parking garage on Laurel Street by a few hundred feet, and land on a runway that begins at the water's edge. Departures go the other way, west over the bay and Point Loma, and turn out over the ocean.
With one runway, arrivals and departures must take turns, and the sequence is tight: an aircraft lands, clears, and the next departs, all day long. A curfew keeps departures off the runway from late evening until early morning.
What to watch for
Southwest and Alaska dominate with 737s, joined by every other US carrier and a growing set of long-haul flights: British Airways, Lufthansa and Japan Airlines widebodies among them. In late spring the marine layer rolls in, the sky icon turns to fog, and arrivals come in on instruments through the cloud until it burns off before noon.
The best real-world view is from Harbor Island across the bay; in the miniature, watch the arrivals thread between the buildings on the east side.
More airports
- LAXLos Angeles International AirportFour parallel runways beside the Pacific, and the busiest airport on the US west coast.
- ORDChicago O'Hare International AirportEight runways, two giant hubs, and weather that keeps everyone on their toes.
- ATLHartsfield–Jackson Atlanta International AirportThe busiest airport on Earth: five parallel runways and an arrival every minute.
- DXBDubai International AirportA380s all day at the busiest international hub in the world.
- LHRLondon Heathrow AirportTwo runways running flat out, Terminal 5 at the west end.
- JFKJohn F. Kennedy International AirportCrossing runway pairs on Jamaica Bay, the AirTrain circling the terminals.
- SANSan Diego International AirportOne runway between the bay and downtown, and the steepest approach in the country.
- AMSAmsterdam Airport SchipholSix runways four metres below sea level, and a fifteen-minute taxi to the Polderbaan.
- DFWDallas/Fort Worth International AirportSeven runways on a site the size of Manhattan, Skylink threading the half-moon terminals.
- HNDTokyo Haneda AirportAsia's busiest airport: four runways on reclaimed land in Tokyo Bay, one standing on piers.
- BKKSuvarnabhumi AirportThree parallel runways around one vast terminal on the marsh east of the city.
- GRUSão Paulo/Guarulhos International AirportSouth America's busiest airport: two parallel runways on the plateau north-east of the biggest city in the hemisphere.
- SYDSydney Kingsford Smith AirportAustralia's busiest airport: two parallel runways reaching out into Botany Bay, and a third across them.
- SINSingapore Changi AirportThree parallel runways on reclaimed land at the eastern tip of the island, and the best-run hub in the world.
- HKGHong Kong International AirportThree parallel runways on an island built for the purpose, between the sea and the mountains of Lantau.