Flight Check

Best Airline: EWR to SAT

Newark to San Antonio — airline reliability comparison

Spirit Airlines is the most reliable airline on the EWR to SAT route with a 85% on-time rate, compared to United Airlines at 85%. Based on 198 flights tracked.

This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Spirit Airlines85%
United Airlines85%

EWR to SAT Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Spirit AirlinesNKBest85%2.3%69m198
United AirlinesUAWorst85%0.8%65m2,162

Route Overview

85%
Overall On-Time
65m
Avg Delay
1%
Cancel Rate
2,389
Total Flights
EWR to SAT Route DetailsReturn: SAT to EWR
EWR AirportSAT Airport

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Data last updated October 2026. Source: Bureau of Transportation Statistics.