Flight Check

Best Airline: DFW to SJU

Dallas to San Juan — airline reliability comparison

Spirit Airlines is the most reliable airline on the DFW to SJU route with a 78% on-time rate, compared to Frontier Airlines at 49%. Based on 1,021 flights tracked.

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

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Spirit Airlines78%
American Airlines72%
Frontier Airlines49%

DFW to SJU Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Spirit AirlinesNKBest78%1.5%74m1,021
American AirlinesAA72%0.8%68m1,971
Frontier AirlinesF9Worst49%4.0%61m315

Route Overview

70%
Overall On-Time
68m
Avg Delay
1.3%
Cancel Rate
3,324
Total Flights
DFW to SJU Route DetailsReturn: SJU to DFW
DFW AirportSJU Airport

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