Washington to Buffalo (IAD-BUF): nonstop flights and who flies them

United Airlines flies nonstop between Washington (IAD) and Buffalo (BUF), roughly 30 times a week. The timetable below shows the nonstop scheduled at 1h 11m to 1h 30m for the 283 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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30
Flights a week, 4-week average
1h 11m to 1h 30m
Scheduled flight time
283 mi
Nonstop distance
Free
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Washington to Buffalo flight schedule

Scheduled nonstop departures for IAD to BUF starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Washington (IAD) to Buffalo (BUF)
Date Flight Airline Departs IAD Arrives BUF Duration Aircraft
UA 4476United Airlines08:1509:351h 20mCR5
UA 4335United Airlines12:5514:231h 28mERJ
UA 4407United Airlines17:4019:071h 27mCR5
UA 4480United Airlines22:1823:441h 26mCR5
UA 4476United Airlines08:1509:351h 20mCR5
UA 4407United Airlines17:4019:071h 27mCR5
UA 4480United Airlines22:2423:501h 26mCR5
UA 4248United Airlines08:3209:541h 22mERJ
UA 4335United Airlines12:5014:201h 30mERJ
UA 4823United Airlines17:4018:511h 11mERJ
UA 4541United Airlines22:1823:291h 11mCR5
UA 4018United Airlines08:3209:541h 22mEmbraer E175
UA 4335United Airlines12:5014:201h 30mERJ
UA 4823United Airlines17:4018:511h 11mERJ
UA 3670United Airlines22:1923:461h 27mEmbraer E175
UA 4018United Airlines08:2409:461h 22mEmbraer E175
UA 4248United Airlines08:3209:541h 22mERJ
UA 4335United Airlines12:5014:201h 30mERJ
UA 4468United Airlines17:3519:041h 29mCR5
UA 4018United Airlines08:2409:461h 22mEmbraer E175
UA 4248United Airlines08:3209:541h 22mERJ
UA 4335United Airlines12:5014:201h 30mERJ
UA 4468United Airlines17:3519:041h 29mCR5
UA 4018United Airlines08:3209:541h 22mEmbraer E175
UA 4335United Airlines12:5014:201h 30mERJ
UA 4823United Airlines17:4018:511h 11mERJ
UA 4541United Airlines22:1823:291h 11mCR5

Showing all 27 scheduled IAD to BUF departures across 7 days with service, starting October 23, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAD to BUF date on the interactive map

Aircraft on the Washington to Buffalo nonstop

United Airlines flies the departures in the schedule table on this page with the Embraer ERJ, the Bombardier CRJ, and the Embraer E175. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAD to BUF nonstop schedule

This page carries the full IAD to BUF nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAD to BUF nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See IAD to BUF on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to Buffalo nonstop

Carriers operating IAD to BUF nonstop in the current schedule.

See IAD to BUF on the interactive map →

Frequently asked questions about IAD to BUF

How long is the flight from Washington (IAD) to Buffalo (BUF)?
Scheduled flight times from Washington (IAD) to Buffalo (BUF) run from 1h 11m to 1h 30m across the departures in the schedule table on this page. The nonstop covers about 283 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAD to BUF?
United Airlines is currently the only airline flying IAD to BUF nonstop. 2LNR doesn't show award or upgrade space for it on IAD to BUF, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAD to BUF?
About 30 nonstop flights a week run between Washington (IAD) and Buffalo (BUF) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to BUF depart?
Scheduled IAD to BUF nonstops in the next 7 days with service leave between 08:15 and 22:24, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAD to BUF nonstop?
The schedule table on this page lists 10 flight numbers for IAD to BUF nonstops, including UA 4018, UA 4248, UA 4335, UA 4407, UA 4476, UA 4480, UA 4541, and UA 4823 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAD to BUF?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to BUF. The page carries the full IAD to BUF nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to BUF nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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