St Louis to Los Angeles in September 2026

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

Lowest this month $83

Highest this month $206

Sample fare $83

Airports STL–LAX

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September 2026 price calendar

From $83 · up to $206

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $189 2 $189 3 $206 4 $145 5 $145 6 $145 7 $145 8 $145 9 $145 10 $145 11 $145 12 $145 13 $145 14 $145 15 $145 16 $145 17 $145 18 $145 19 $145 20 $145 21 $83

Los Angeles LAX

$83

Sep 21, 8:10pm · 20h 29m · 1 stop

STL → LAX · Frontier Airlines

This page is only September 2026 on the St Louis to Los Angeles 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 St Louis to Los Angeles in September 2026.