Republic Airways is the most reliable airline on the DCA to GSP route with a 87% on-time rate, compared to PSA Airlines at 74%. Based on 227 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: DCA to GSP
Washington to Greenville — airline reliability comparison
On-Time Rate by Airline
Republic Airways87%
85%
PSA Airlines74%
DCA to GSP Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Republic AirwaysYXBest | 87% | 2.4% | 52m | 227 |
| MQ | 85% | 0.0% | 35m | 93 |
| PSA AirlinesOHWorst | 74% | 3.7% | 79m | 3,258 |
Route Overview
74%
Overall On-Time
78m
Avg Delay
3.6%
Cancel Rate
3,608
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.