IAD → BUFWashington to Buffalo

live

Direct flights from Washington (IAD) to Buffalo (BUF): 28 nonstop departures observed each week across 2 airlines. 75% of the last 20 tracked flights arrived within 15 minutes of schedule. The median arrival is 13 minutes early. No cancellations were recorded across the 25 tracked flights. The nonstop covers 457 km, an estimated 1 hour 5 minutes in the air. Measured by Pro Flight Search from live flight boards at Washington and Buffalo. Updated 14 November 2026 at 11:18 UTC.

IAD Washington disrupted · +174
BUF Buffalo smooth · +0
457 km · ~1h 05m est.
dep bank 08:32–22:1928x weekly
Runs mixed · 2 airlines · 28x weekly · nonstop
75% on time

of the last 20 tracked IAD → BUF flights arrived within 15 minutes

Median arrival delay is −13 min. 0 of 25 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−13 minacross the last 20 arrivals
Flight time~1h 05mestimated from route distance
Weekly departures28x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 25

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Libyan AirlinesUnited Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Libyan AirlinesLN

Flights LN744 varies Mo We Th Su

United AirlinesUA88% on time

Flights UA4018 08:32 Mo Th Fr · UA4248 08:32 Tu We Su · UA3428 12:40 Tu Su · UA4335 12:50 Mo We Th Fr Sa

History

operated legs · board outcomes
11-13UA4335dep +13 → arr−27
11-13YV4018dep +20 → arr+18
11-12UA4335dep +17 → arr−24
11-12UA4541dep +19 → arr−18
11-12UA4823dep +42 → arr+42
11-12YV4018dep +42 → arr+42
11-11LN744departed+0
11-11UA4248dep +15 → arr−18
11-11UA4335dep +54 → arr+13
11-11UA4468dep +19 → arr−23
11-10UA4468dep +27 → arr−13
11-09LN744departed+0
11-09UA3670dep +19 → arr−20
11-09UA4018departed+78
11-09UA4335dep +20 → arr−17
11-09UA4823dep +156 → arr+118
11-09YV4018dep +27 → arr+27
11-08LN744departed+0
11-08UA3428dep +27 → arr−12
11-08UA4248dep +12 → arr−20
11-08UA4541dep +29 → arr−1
11-08UA4823dep +34 → arr−3
11-07UA3757departed+47
11-07UA4335dep +29 → arr−13
11-07UA4468dep +12 → arr−25

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
IADWashington +174 min disrupted 🌤 overcast · NW 9 kt Full IAD delay board →
BUFBuffalo +0 min smooth ⛅ overcast · NW 9 kt Full BUF delay board →

Weather lens

Conditions are tightest at IAD and BUF: a 35% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +10 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the Washington to Buffalo route actually runs

Pro Flight Search records official board updates for nonstop IAD to BUF flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: Washington (IAD) to Buffalo (BUF) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/IAD-BUF
How we measure this →

IAD to BUF questions

Is IAD–BUF running on time right now?

Significant delay risk. The departure side at IAD is the weaker end, route health score 50/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on IAD–BUF?

Operators schedule morning departures around 08:32 and evening departures around 17:35 from IAD. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BUF delay card to confirm conditions when you'd arrive.

How long is the flight from IAD to BUF?

Great-circle distance is 457 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 62–69 min gate-to-gate on this route.

How often does IAD–BUF fly?

2 carriers operate this route, around 28 flights a week between them. Compare carrier days and times in the airline list above.