Republic Airways is the most reliable airline on the IAD to SBN route with a 81% on-time rate. Based on 251 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAD to SBN
Washington to South Bend — airline reliability comparison
On-Time Rate by Airline
Republic Airways81%
IAD to SBN Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Republic AirwaysYXBest | 81% | 1.7% | 93m | 251 |
Route Overview
81%
Overall On-Time
90m
Avg Delay
2%
Cancel Rate
252
Total Flights
Flying out of IAD? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.