Phoenix to Washington in September 2026

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

Lowest this month $127

Highest this month $192

Sample fare $127

Airports PHX–DCA

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September 2026 price calendar

From $127 · up to $192

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $192 2 $145 3 $136 4 $136 5 $136 6 $136 7 $136 8 $136 9 $136 10 $136 11 $136 12 $136 13 $136 14 $127 15 $150 16 $150 17 $150 18 $150 19 $150 20 $150 21 $150 22 $150 23 $150 24 $150 25 $150 26 $150 27 $174 28 $130

Washington WAS

$127

Sep 14, 11:29am · 7h 30m · 1 stop

PHX → DCA · Frontier Airlines

Washington WAS

$130

Sep 28, 7:24pm · 7h 56m · 1 stop

PHX → IAD · Frontier Airlines

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