Route guide
Cheap Flights from San Francisco to San Diego: Book Airline Tickets
- Distance
- about 450 mi
- Typical flight time
- 1 h 15 min – 2 h 15 min
- Airports
- 3 × 1
- Time difference
- None
This page covers the practical side of flying between San Francisco and San Diego: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: San Francisco to San Diego is about 450 miles (720 km) and a typical flight takes 1 h 15 min to 2 h 15 min. There is no time difference. San Francisco has 3 airports to compare and San Diego has 1.
Airport pairs to compare
The Bay Area has three major airports, and the best one depends on where you are staying. SFO is the main gateway, with Oakland and San Jose as alternatives. San Diego's airport is only a few miles from downtown, and it operates with a single runway.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| SFO to SAN | San Francisco International | San Diego International |
| OAK to SAN | Oakland International | San Diego International |
| SJC to SAN | San Jose Mineta International | San Diego International |
About the airports
- SFO · San Francisco International
The main airport, south of the city, with a BART connection. - OAK · Oakland International
A good alternative if you are staying in the East Bay or want a smaller airport. - SJC · San Jose Mineta International
A convenient choice for Silicon Valley and the South Bay. - SAN · San Diego International
Only a few miles from downtown, with a single runway.
Airlines with a major base at either end
- At San Francisco: United Airlines, Alaska Airlines
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
San Francisco
Late summer and early fall tend to be the warmest and clearest months. Summer mornings are often foggy.
San Diego
The climate is mild year-round. Summer and holidays are busiest, and May and June often have morning cloud along the coast.
How long is San Francisco to San Diego?
At about 450 miles, San Francisco to San Diego is a short hop. On a route this short the trip to the airport, security and boarding can take as long as the flight itself, so compare total door-to-door time and pick the airport that is easiest for you to reach, not only the cheapest fare.
Getting between the airport and town
San Francisco: BART trains connect SFO and Oakland to the wider region, which avoids freeway traffic.
San Diego: Downtown is a short taxi or ride-hail trip from the airport.
Planning ground transport too? See our car rental guide.
Good to know
- Check every airport pairing when you compare fares. Schedules and airline options can differ between them.
- Fog can cause delays at SFO, particularly in the morning. Check all three airports when you compare fares.
- San Diego Comic-Con in July fills hotels and raises demand. On busy days, delays at the single-runway airport can ripple.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying San Diego to San Francisco?
This route guide works in both directions. For other trips, see all flights from San Francisco or all flights from San Diego.
Frequently asked questions
How far is San Francisco from San Diego?
The straight-line distance between the main airports is about 450 miles (720 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from San Francisco to San Diego?
A typical scheduled flight takes roughly 1 h 15 min to 2 h 15 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At San Francisco: SFO (San Francisco International), OAK (Oakland International), SJC (San Jose Mineta International). At San Diego: SAN (San Diego International). Ask for prices on more than one pairing.
Is there a time difference?
There is no time difference.
When is the best time to fly from San Francisco to San Diego?
In San Francisco: Late summer and early fall tend to be the warmest and clearest months. Summer mornings are often foggy. In San Diego: The climate is mild year-round. Summer and holidays are busiest, and May and June often have morning cloud along the coast. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for San Francisco to San Diego?
Airlines with a major base at either end include United Airlines and Alaska Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.