UA4304 IAD → GSP

United Airlines · Washington, DC to Greer, SC · 32 flights observed, 2026-01-06 to 2026-02-11 · 384 mi

This flight's reliability varies a lot by day of week — 100% on-time on Tuesdays vs. 60% on Fridays.

UA4304 covers more than one route in the data window — the stats below are for IAD → GSP, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
87%
Median delay
-7 min
90th percentile
+16 min
Cancellation rate
6%

How often is UA4304 on time?

Across 32 flights on IAD → GSP from 2026-01-06 to 2026-02-11, UA4304 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +16 min or later. 6% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time2687%
16-30 min413%
31-60 min00%
61-120 min00%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-012080%-7 min
2026-0210100%-4 min

Performance by day of week

DayFlightsOn-time
Mon475%
Tue6100%
Wed6100%
Thu580%
Fri560%
SatNo data—
Sun4100%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…