Delta vs Republic: On-Time Performance Compared

Last 12 months · Aug 2025 – Jul 2026

Data through July 2026 · Last updated October 18, 2026

Delta was more punctual than Republic over the last 12 months: 81.5% of its flights arrived on time, against 78.7%.

Delta cancelled fewer flights (1.7% vs 4.1%), and late flights averaged 71 minutes late on Delta vs 72 on Republic.

On the 52 routes both airlines fly regularly, Delta had the better on-time record on 19 and Republic on 33.

Delta vs Republic: key numbers

Last 12 months, all flights each airline operated.

DeltaRepublic

On-time arrivals81.5%78.7%

On-time departures81.9%81.3%

Cancelled1.7%4.1%

Diverted0.3%0.2%

On-time arrival % each month, last 24 months.

DeltaRepublic

70%80%90%

Aug ’24Nov ’24Feb ’25May ’25Aug ’25Nov ’25Feb ’26May ’26

Share of each airline’s reported delay minutes by cause, last 12 months.

DeltaRepublic

Airline (carrier)44.7%23.5%

Weather4.1%5.7%

Air traffic system (NAS)21.6%31.8%

Security0.1%0.1%

Late-arriving aircraft29.5%38.9%

52 routes where each airline had at least 100 completed flights in the last 12 months; the 25 busiest are shown. Better on-time rate in bold.

Route	Delta on time	Republic on time	Delta flights	Republic flights
LGA → BOS	74.4%	73.6%	513	6,830
BOS → LGA	90.4%	76.2%	514	6,828
ATL → LGA	76.7%	76.0%	4,935	1,732
LGA → ATL	80.0%	77.1%	4,932	1,733
ATL → DCA	67.8%	70.9%	3,842	454
DCA → ATL	80.7%	79.8%	3,842	453
LGA → ORD	68.9%	68.2%	2,306	1,288
ORD → LGA	70.6%	71.2%	2,306	1,287
JFK → BOS	69.9%	77.1%	368	2,889
BOS → JFK	91.6%	75.4%	368	2,888
ATL → EWR	71.6%	79.5%	3,045	130
EWR → ATL	80.0%	86.6%	3,045	130
EWR → DTW	79.7%	84.1%	1,618	1,538
DTW → EWR	74.6%	80.6%	1,618	1,519
PHL → ATL	84.3%	87.9%	3,017	119
ATL → PHL	76.3%	90.5%	3,016	119
LGA → DTW	82.0%	75.1%	1,981	1,045
DTW → LGA	76.7%	77.3%	1,980	1,045
ATL → ORD	69.2%	69.0%	2,630	305
ORD → ATL	80.5%	70.4%	2,628	305
LGA → RDU	80.8%	74.0%	344	2,022
RDU → LGA	72.7%	70.0%	344	2,020
BNA → LGA	68.2%	73.5%	450	1,678
LGA → BNA	71.2%	75.1%	450	1,678
DCA → DTW	79.6%	81.1%	1,741	276