Flight Check

Best Airline: ATL to IAH

Atlanta to Houston — airline reliability comparison

SkyWest Airlines is the most reliable airline on the ATL to IAH route with a 83% on-time rate, compared to Spirit Airlines at 67%. Based on 116 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

SkyWest Airlines83%
United Airlines81%
Delta Air Lines77%
Frontier Airlines67%
Spirit Airlines67%

ATL to IAH Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest83%0.0%52m116
United AirlinesUA81%1.3%77m4,265
Delta Air LinesDL77%1.5%53m8,475
Frontier AirlinesF967%2.2%93m1,887
Spirit AirlinesNKWorst67%2.5%74m2,028

Route Overview

75%
Overall On-Time
67m
Avg Delay
1.6%
Cancel Rate
16,791
Total Flights
ATL to IAH Route DetailsReturn: IAH to ATL
ATL AirportIAH Airport

Flying out of ATL? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

Free. No account needed.

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