Washington to Los Angeles in September 2026

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

Lowest this month $100

Highest this month $214

Sample fare $98

Airports IAD–LAX

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September 2026 price calendar

From $100 · up to $214

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $168 2 $197 3 $214 4 $197 5 $201 6 $201 7 $205 8 $172 9 $139 10 $162 11 $109 12 $105 13 $105 14 $100 15 $115 16 $115 17 $115 18 $115 19 $112 20 $109 21 $101 22 $110 23 $110 24 $120 25 $115 26 $112 27 $112 28 $109

Los Angeles LAX

$100

Sep 14, 7:00am · 10h 39m · 1 stop

DCA → LAX · Frontier Airlines

Los Angeles LAX

$101

Sep 21, 7:00am · 20h 10m · 1 stop

DCA → LAX · Frontier Airlines

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