UA6157 IAD → MCI

United Airlines · Washington, DC to Kansas City, MO · 314 flights observed, 2025-07-01 to 2026-05-20 · 926 mi

This flight's scheduled flight time has grown by 14 min since 2025-07 — some of the on-time performance may reflect a more generous published schedule, not a faster or more reliable flight.

UA6157 covers more than one route in the data window — the stats below are for IAD → MCI, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
84%
Median delay
-8 min
90th percentile
+29 min
Cancellation rate
1%

How often is UA6157 on time?

Across 314 flights on IAD → MCI from 2025-07-01 to 2026-05-20, UA6157 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +29 min or later. 1% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time26184%
16-30 min196%
31-60 min124%
61-120 min52%
2+ hrs134%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073077%+26 min
2025-082789%-4 min
2025-092677%+16 min
2025-103194%0 min
2025-112893%-6 min
2025-123060%+20 min
2026-013087%+13 min
2026-022889%-9 min
2026-033090%+0 min
2026-043087%-1 min
2026-052085%-2 min

Performance by day of week

DayFlightsOn-time
Mon4489%
Tue4080%
Wed4584%
Thu4578%
Fri4680%
Sat4687%
Sun4491%

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