dailynewsnblog
The results are in, and 
Delta Air Lines has been knocked off the podium as the United States’ most reliable airline. Data in the January 2026 Air Travel Consumer Report (published May 1, 2026) from the United States Department of Transportation reveals that Delta has fallen from first to sixth place in reliability metrics, a concerning reversal for a carrier that held the top spot for five consecutive years, according to aviation analytics company Cirium.
Delta was also the only US-based carrier to feature in Cirium’s Top Ten Global Airlines for 2025 when considering on-time performance rankings. Significant operational challenges this weekend have further compounded Delta’s woes, as the carrier was forced to cancel over 400 flights, citing unspecified “crew restrictions” despite favorable weather across much of the US.
Dropped From First To Sixth Most Reliable Airline
Every month, flight data is filed by the Department of Transportation’s Bureau of Transportation Statistics, which analyses airline on-time performance, delays, and overall cancellations for flights operated nonstop within the United States. Flights are classed as on-time if they arrive within 15 minutes.
The January report shows that Delta as a whole operated 132,034 flights, of which 84,475 were operated by the mainline carrier, and another 47,559 by branded codeshare partners. Of these, 105,710 were on time (or 80.06%), which is a reasonable on-time performance (OTP). However, reliability is also measured by schedule fulfillment — Delta registered a total of 3,229 cancellations, of which 1,439 were from mainline operations, and 1,790 on branded codeshare partners.
These canceled flights account for a total of 2.45% of all canceled flights, 1.7% on mainline, and another 3.76% on branded codeshare partners. When compared to other US carriers, this places the Atlanta-based airline sixth.
The Competition: Who Beat Delta?
Taking first place is ultra-low-cost carrier Allegiant Air. While the airline operates a far smaller number of total flights (in this summary, 9,652), it had just 78 total flight cancellations, with 7,344 of all services operating on time. This equates to a 0.81% cancellation rate, the best in the market.
Second place went to 
Southwest Airlines, the world’s largest low-cost carrier by fleet size and passengers flown. The Dallas-based carrier canceled a total of 1,970 flights, of its total 113,938 flights, representing a 1.73% cancellation rate. Third place is Hawaiian Airlines, which operated a total of 6,426 flights and canceled 125, equating to 1.95%. The data below is from the US DOT report:
|
Airline |
Total Number Of Flights |
Flights Arrived On Time |
% Arrived On Time |
Flights Canceled |
% Flights Cancelled |
|---|---|---|---|---|---|
|
Allegiant Air |
9,652 |
7,344 |
76.09% |
78 |
0.81% |
|
Southwest Airlines |
113,938 |
89,280 |
78.36% |
1,970 |
1.73% |
|
Hawaiian Airlines |
6,426 |
5,134 |
79.89% |
125 |
1.95% |
|
Frontier Airlines |
17,047 |
12,668 |
74.31% |
340 |
1.99% |
|
Spirit Airlines |
11,793 |
9,048 |
76.72% |
270 |
2.29% |
|
Alaska Airlines |
34,555 |
27,434 |
79.39% |
848 |
2.45% |
|
Delta Air Lines |
132,034 |
122,062 |
76.09% |
3,229 |
2.45% |
Canceled flights are classed as flights that did not operate, but were in the carrier’s computer reservation system within seven days of expected departure.
The World’s Most Punctual Airline In January Had An 87.53% On-Time Rate
It wasn’t all good news, as cancellations to European flights more than doubled from month to month.
Operational Meltdown This May Weekend
Over the May 2–3 weekend, Delta experienced its own operational crisis, with Friday seeing hundreds of flights delayed and more than 200 cancellations by Saturday afternoon. The airline blamed the meltdown on “crew restrictions”, which forced thousands of flights to be canceled as the airline faced staffing struggles. This cascaded into technical issues, which left thousands of passengers stranded.
On Friday, the airline canceled around 4% of all its flights, and this number jumped even higher on Saturday, with 6% of scheduled flights canceled. As suggested by MarketDay on X, these issues stemmed from a significant drop in pilots being able to pick up overtime, a lack of spare crew, and its internal crew tracking software being unable to manage the airline’s latest complex new rest requirements.
While Delta flopped this weekend, all other major US legacy carriers reported no operational issues or restraints, with American Airlines and United Airlines operating without any major delays.
