IAD (Washington) to Buffalo in September 2026

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

Lowest this month $91

Highest this month $225

Sample fare $91

Airports IAD–BUF

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September 2026 price calendar

From $91 · up to $225

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $225 2 $158 3 $158 4 $158 5 $158 6 $158 7 $158 8 $158 9 $158 10 $91

Buffalo BUF

$91

Sep 10, 11:12am · 6h 33m · 1 stop

IAD → BUF · Frontier Airlines

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