Nonstop flights from Washington to Buffalo

3 airlines fly from 3 Washington airports (BWI, IAD and DCA) to Buffalo (BUF), with up to 11 flights a day.

BWIBUF

Routes

3 airport pairs

When they leave

Washington time

8:25a10:40pFirst departure 8:25 AM, last 10:40 PM

Eight in the morning, 8:25 AM to 11:35 AM, then five in the afternoon, 12:59 PM to 4:20 PM, then nine in the evening, 5:15 PM to 10:40 PM.

Every flight

Earliest first

8:25 AM→9:51 AMIAD to BUFUnited AirlinesEmbraer 175Mon, Thu, Fri, Sun
8:25 AM→9:50 AMIAD to BUFUnited AirlinesCRJ 700Sat
8:35 AM→9:55 AMBWI to BUFSouthwest AirlinesBoeing 737 MAX 8Sat
9:55 AM→11:10 AMBWI to BUFSouthwest AirlinesBoeing 737-700Mon, Thu, Fri
9:59 AM→11:29 AMDCA to BUFAmerican AirlinesEmbraer 175Wed, Thu, Fri, Sat, Sun
10:24 AM→11:48 AMDCA to BUFAmerican AirlinesCRJ 700Mon, Tue
10:50 AM→12:05 PMBWI to BUFSouthwest AirlinesBoeing 737 MAX 8Sat
11:15 AM→12:30 PMBWI to BUFSouthwest AirlinesBoeing 737-700Tue, Wed, Sun
11:35 AM→12:45 PMBWI to BUFSouthwest AirlinesBoeing 737-700Mon, Thu, Fri
12:59 PM→2:25 PMIAD to BUFUnited AirlinesEmbraer ERJTue, Wed, Thu, Fri, Sun
12:59 PM→2:24 PMIAD to BUFUnited AirlinesCRJ 700Mon
3:25 PM→4:55 PMDCA to BUFAmerican AirlinesCRJ 900Mon, Tue
3:36 PM→5:08 PMDCA to BUFAmerican AirlinesCRJ 700Wed, Thu, Fri, Sat, Sun
4:15 PM→5:30 PMBWI to BUFSouthwest AirlinesBoeing 737Sun
4:20 PM→5:40 PMBWI to BUFSouthwest AirlinesBoeing 737 MAX 8Sat
5:15 PM→6:25 PMBWI to BUFSouthwest AirlinesBoeing 737-700Mon, Tue, Wed, Thu, Fri
5:36 PM→7:09 PMIAD to BUFUnited AirlinesEmbraer ERJDaily
6:15 PM→7:30 PMBWI to BUFSouthwest AirlinesBoeing 737 MAX 8Sun
7:45 PM→9:10 PMBWI to BUFSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat, Sun
8:30 PM→9:56 PMDCA to BUFAmerican AirlinesCRJ 900Sat
8:35 PM→9:55 PMBWI to BUFSouthwest AirlinesBoeing 737-700Mon, Tue, Wed, Thu, Fri
10:11 PM→11:36 PMDCA to BUFAmerican AirlinesEmbraer 175Wed, Thu, Fri, Sun
10:26 PM→11:58 PMIAD to BUFUnited AirlinesCRJ 700Fri
10:26 PM→11:59 PMIAD to BUFUnited AirlinesEmbraer 175Mon, Tue, Wed, Thu, Sat, Sun
10:40 PM→11:59 PMDCA to BUFAmerican AirlinesEmbraer 175Mon, Tue

Schedules last checked Sep 19, 2026. Times are local.

Flying from Washington to Buffalo

Southwest Airlines flies most often, 4 times a day on the Boeing 737 MAX 8, Boeing 737-700 and Boeing 737. United Airlines flies 3 to 4 times a day on the CRJ 700, Embraer 175 and Embraer ERJ. American Airlines flies 3 times a day on the Embraer 175, CRJ 700 and CRJ 900.

There are 10 or 11 flights every day of the week. The first arrival in Buffalo is at 9:50 AM and the last at 11:59 PM.

BWI to BUF is the busiest airport pair, with 28 flights a week, then IAD to BUF with 25 and DCA to BUF with 21.

Flying back, Buffalo to Washington has 75 nonstop flights a week.

Return flights

Buffalo to WashingtonView

Find the cheapest day to fly from Washington to Buffalo.

Schedules as of Oct 9, 2026.