Los Angeles to San Diego in September 2026

Dated one-way fares from Los Angeles to San Diego in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $73

Highest this month $161

Sample fare $73

Airports LAX–SAN

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September 2026 price calendar

From $73 · up to $161

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $137 2 $161 3 $123 4 $123 5 $123 6 $123 7 $123 8 $84 9 $73

San Diego SAN

$73

Sep 09, 8:44am · 33h 35m · 1 stop

LAX → SAN · Frontier Airlines

San Diego SAN

$84

Sep 08, 10:15am · 22h 6m · 1 stop

LAX → SAN · Frontier Airlines

San Diego SAN

$137

Sep 01, 7:13pm · 19h 37m · 1 stop

LAX → SAN · Frontier Airlines

San Diego SAN

$161

Sep 02, 7:13pm · 19h 37m · 1 stop

LAX → SAN · Frontier Airlines

This page is only September 2026 on the Los Angeles to San Diego route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book Los Angeles to San Diego in September 2026.