Which airline has the most delays PHL to ATL?

Frontier Airlines has the lowest on-time rate on the PHL to ATL route at 64%.

Which airline cancels the most flights PHL to ATL?

Frontier Airlines has the highest cancellation rate on this route at 2.4%.

Best Airline: PHL to ATL

Q: Which airline is most reliable PHL to ATL?

Republic Airways is the most reliable airline on the PHL to ATL route with a 90% on-time arrival rate.

Philadelphia to Atlanta — airline reliability comparison

Republic Airways is the most reliable airline on the PHL to ATL route with a 90% on-time rate, compared to Frontier Airlines at 64%. Based on 418 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

Republic Airways90%

Delta Air Lines85%

Southwest Airlines83%

PSA Airlines82%

Spirit Airlines76%

American Airlines73%

Frontier Airlines64%

PHL to ATL Airline Comparison

Airline	On-Time %	Cancel %	Avg Delay	Flights
Republic AirwaysYXBest	90%	1.9%	48m	418
Delta Air LinesDL	85%	1.4%	72m	10,445
Southwest AirlinesWN	83%	0.4%	54m	1,166
PSA AirlinesOH	82%	2.4%	67m	2,024
Spirit AirlinesNK	76%	1.4%	67m	1,096
American AirlinesAA	73%	1.1%	68m	2,247
Frontier AirlinesF9Worst	64%	2.4%	74m	3,205

Route Overview

79%

Overall On-Time

72m

Avg Delay

1.7%

Cancel Rate

20,682

Total Flights

PHL to ATL Route Details Return: ATL to PHL

PHL Airport ATL Airport

Flying out of PHL? We'll brief you.

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

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