San Diego is a coastal city in southern California with a mild climate year-round. Its main airport sits only a few miles from downtown, so most visitors reach the center quickly by bus or car.
Checking today’s fares with the airlines.
3 miles (4.8 km) from the city centre. 25.3 million passengers in 2025
| How | Route | Time | Cost |
|---|---|---|---|
| Bus | MTS Route 992 to the Santa Fe Depot downtown, every 15 minutes | about 15m | $3.00 one way (adult) |
| Shuttle | Free San Diego Flyer shuttle to Old Town Transit Center for trolley and train connections | – | free |
Domestic travel: a REAL ID-compliant license or other acceptable ID, such as a US passport, is required to board flights within the US.
Since the REAL ID enforcement date of May 7, 2025, travelers 18 and older need a REAL ID-compliant license (marked with a star), an enhanced driver's license, a US passport or another TSA-accepted ID to pass airport security. TSA PreCheck and CLEAR do not waive this requirement.
Temperatures stay moderate all year, with highs from the mid 60s F in winter to the upper 70s F in late summer. August and September are the warmest months.
Busiest: Jun–Sep. Quieter shoulder season: Apr–May, Oct.
| Month | Avg high | Avg low |
|---|---|---|
| Jan | 66.4°F (19°C) | 50.3°F (10°C) |
| Feb | 66.2°F (19°C) | 51.8°F (11°C) |
| Mar | 67°F (19°C) | 54.5°F (13°C) |
| Apr | 68.8°F (20°C) | 57.1°F (14°C) |
| May | 69.5°F (21°C) | 60°F (16°C) |
| Jun | 71.7°F (22°C) | 62.6°F (17°C) |
| Jul | 75.3°F (24°C) | 66.1°F (19°C) |
| Aug | 77.3°F (25°C) | 67.5°F (20°C) |
| Sep | 77.2°F (25°C) | 66.2°F (19°C) |
| Oct | 74.6°F (24°C) | 61.5°F (16°C) |
| Nov | 70.7°F (22°C) | 54.8°F (13°C) |
| Dec | 66°F (19°C) | 49.8°F (10°C) |
San Diego is served by San Diego International Airport (SAN). San Diego International Airport handled about 25.3 million passengers in 2025.
Domestic travel: a REAL ID-compliant license or other acceptable ID, such as a US passport, is required to board flights within the US. Since the REAL ID enforcement date of May 7, 2025, travelers 18 and older need a REAL ID-compliant license (marked with a star), an enhanced driver's license, a US passport or another TSA-accepted ID to pass airport security. TSA PreCheck and CLEAR do not waive this requirement.
Temperatures stay moderate all year, with highs from the mid 60s F in winter to the upper 70s F in late summer. August and September are the warmest months.
MTS Route 992 to the Santa Fe Depot downtown, every 15 minutes, about 15 minutes, $3.00 one way (adult). Other options include free san diego flyer shuttle to old town transit center for trolley and train connections.
Among the cities we cover, Atlanta (about 0m), Boston (about 0m), Charlotte (about 0m), Chicago (about 0m), Dallas (about 0m), Denver (about 0m), Detroit (about 0m), Houston (about 0m), Los Angeles (about 0m), Miami (about 0m), Minneapolis–Saint Paul (about 0m), New York (about 0m), Philadelphia (about 0m), Phoenix (about 0m), San Francisco (about 0m), Seattle (about 0m) and Washington, D.C. (about 0m) have nonstop service to San Diego as of October 2026.
San Diego uses the US dollar (USD).
Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.