Detour Flights

Cheap flights to San Francisco

We are tracking 443 fares into San Francisco (SFO) from 57 departure airports.

Cheapest tracked fare $19  ·  about $76 below the typical price for that distance

Cheapest fares we're tracking

FromDepartsStopsPrice
Los Angeles (LAX)2026-09-30Direct$19
Los Angeles (LAX)2026-10-14Direct$19
Los Angeles (LAX)2026-11-11Direct$19
Los Angeles (LAX)2026-10-22Direct$23
San Diego (SAN)2026-09-09Direct$28
Ontario CA (ONT)2026-09-17Direct$28
Ontario CA (ONT)2026-09-21Direct$28
Ontario CA (ONT)2026-09-24Direct$28
Ontario CA (ONT)2026-09-28Direct$28
Ontario CA (ONT)2026-10-22Direct$28
Los Angeles (LAX)2026-09-16Direct$28
Los Angeles (LAX)2026-09-17Direct$28
Los Angeles (LAX)2026-09-22Direct$28
Los Angeles (LAX)2026-09-23Direct$28
Los Angeles (LAX)2026-09-28Direct$28
Ontario CA (ONT)2026-10-19Direct$31
Las Vegas (LAS)2026-09-09Direct$33
Las Vegas (LAS)2026-10-06Direct$35
Los Angeles (LAX)2026-09-09Direct$35
Los Angeles (LAX)2026-10-07Direct$35

Popular departure airports

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Compare every airport, not just this one

Pin one end of your trip and let a whole region compete for the other. The cheapest airport is often not the one you were going to use.

Find my cheapest airport

Common questions

Which airports have cheap flights to San Francisco?
We are currently tracking 443 fares into San Francisco from 57 departure airports, listed cheapest first above.
Is San Francisco the cheapest airport for this trip?
Not always. Cached fare feeds cover big hubs densely and secondary airports sparsely, so a cheaper nearby airport is often simply missing from a normal search rather than more expensive. Our reverse search prices a whole region's airports against each other to surface it.