Kansas City (MCI) to Washington (IAD): On-Time Performance
Data through July 2026
Kansas City (MCI) to Washington (IAD) is a thinner route than most in this dataset — 144 departures over the past year, roughly 3 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 86% arrived on time, comfortably above the national average of 78%. Cancellations are the bigger caveat: 3.3% of scheduled flights never departed.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 3.3%
- Flights/day
- 0.39
- last 12 months
- Duration
- 2h 36m
- scheduled
- Distance
- 926 mi
Best airline from MCI to IAD
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 90% | 17 min | 1.4% | 72 |
| Republic Airways | 83% | 23 min | 5.1% | 79 |
Best time to fly from MCI to IAD
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 90% | 9 min |
| Tuesday | 94% | 4 min |
| Wednesday | 80% | 18 min |
| Thursday | 91% | 3 min |
| Fridaybest | 95% | 1 min |
| Saturday | 80% | 78 min |
| Sunday | 77% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations49%
- National airspace system12%
Frequently asked questions
- How often are flights from MCI to IAD delayed?
- 14% of MCI–IAD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 20 minutes.
- Which airline is most reliable from MCI to IAD?
- United Airlines has the best on-time record on this route at 90%, based on 72 flights. 2 airlines flew MCI–IAD frequently enough to compare in this period.
- How long is the flight from MCI to IAD?
- The scheduled MCI–IAD flight time averages 2h 36m over 926 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are MCI to IAD flights cancelled?
- 3.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
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Related guides
Based on 151 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.