Washington (IAD) to South Bend (SBN): On-Time Performance
Data through May 2026
Washington (IAD) to South Bend (SBN) is a thinner route than most in this dataset — 142 departures over the past year, roughly 3 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 81% arrived on time.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 2.2%
- Flights/day
- 0.39
- last 12 months
- Duration
- 1h 54m
- scheduled
- Distance
- 504 mi
Monthly on-time trend
Best time to fly from IAD to SBN
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 15 min |
| Tuesdaybest | 91% | 6 min |
| Wednesday | 84% | 8 min |
| Thursday | 71% | 18 min |
| Friday | 79% | 11 min |
| Saturday | 75% | 21 min |
| Sunday | 84% | 56 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations37%
- National airspace system17%
- Weather7%
Frequently asked questions
- How often are flights from IAD to SBN delayed?
- 19% of IAD–SBN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 19 minutes.
- How long is the flight from IAD to SBN?
- The scheduled IAD–SBN flight time averages 1h 54m over 504 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are IAD to SBN flights cancelled?
- 2.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What day of the week is most reliable for IAD to SBN?
- Tuesday flights have the best record at 91% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 71%.
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Based on 267 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.