Buffalo to Washington in September 2026

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

Lowest this month $95

Highest this month $132

Sample fare $90

Airports BUF–DCA

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September 2026 price calendar

From $95 · up to $132

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $132 2 $126 3 $120 4 $108 5 $108 6 $108 7 $108 8 $108 9 $108 10 $108 11 $96 12 $96 13 $96 14 $96 15 $96 16 $96 17 $95

Baltimore BWI

$95

Sep 17, 3:55pm · 1h 15m · 0 stops

BUF → BWI · Southwest Airlines

Washington WAS

$96

Sep 11, 1:40pm · 10h 30m · 1 stop

BUF → IAD · Frontier Airlines

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