United Airlines is the most reliable airline on the CHS to IAD route with a 91% on-time rate, compared to Republic Airways at 87%. Based on 1,301 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: CHS to IAD
Charleston to Washington — airline reliability comparison
On-Time Rate by Airline
United Airlines91%
Republic Airways87%
CHS to IAD Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 91% | 0.7% | 91m | 1,301 |
| Republic AirwaysYXWorst | 87% | 1.3% | 72m | 1,137 |
Route Overview
89%
Overall On-Time
83m
Avg Delay
1.1%
Cancel Rate
2,472
Total Flights
Flying out of CHS? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.