Washington to Las Vegas in September 2026

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

Lowest this month $118

Highest this month $148

Sample fare $116

Airports IAD–LAS

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September 2026 price calendar

From $118 · up to $148

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $148 2 $148 3 $138 4 $138 5 $138 6 $138 7 $138 8 $128 9 $148 10 $141 11 $142 12 $142 13 $143 14 $128 15 $123 16 $118

Las Vegas LAS

$118

Sep 16, 6:00am · 4h 58m · 0 stops

IAD → LAS · Frontier Airlines

This page is only September 2026 on the Washington to Las Vegas 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 Las Vegas in September 2026.