Airlines › Southwest Airlines › March 2026
Carrier month · March 2026
Southwest Airlines in March 2026
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In March 2026, Southwest Airlines (WN) reported 122,298 scheduled domestic flights. 73.0% arrived on time, 1.6% were cancelled and 0.2% diverted.
All reporting carriers together recorded 73.2% on time and 2.9% cancelled that month, so the carrier was level with the combined figure.
A year earlier, in March 2025, it reported 122,432 flights with 81.5% on time: a change of −8.5 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, air carrier 29% and national aviation system 18%.
- On time 73.0%
- Arrived 15+ minutes late 25.2%
- Cancelled 1.6%
- Diverted 0.2%
March 2026 against a year earlier, the carrier's year and all carriers
| Measure | Mar 2026 | Mar 2025 | WN, 12 months to Jul 2026 | All carriers, Mar 2026 |
|---|---|---|---|---|
| Arrived on time | 73.0% | 81.5% | 75.5% | 73.2% |
| Departed on time | 67.5% | 79.1% | 71.2% | 72.8% |
| Cancelled | 1.6% | 0.8% | 0.9% | 2.9% |
| Average arrival delay | 8.4 min | 3.0 min | 6.8 min | 10.6 min |
| Scheduled flights a day | 4,077 | 4,081 | 3,808 | 20,403 |
| Scheduled flights | 122,298 | 122,432 | 1,389,951 | 612,102 |
106 airports and 1,708 routes had WN flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| LAS Las Vegas | 7,556 | 73.4% | 7.0 min | 0.7% |
| DEN Denver | 7,473 | 69.0% | 13.6 min | 1.1% |
| PHX Phoenix | 6,343 | 71.0% | 9.8 min | 0.8% |
| MDW Chicago | 6,092 | 65.6% | 14.8 min | 3.9% |
| DAL Dallas | 6,072 | 69.0% | 12.0 min | 1.2% |
| BWI Baltimore | 6,058 | 72.3% | 8.6 min | 2.1% |
| BNA Nashville | 5,542 | 74.3% | 5.5 min | 1.5% |
| MCO Orlando | 4,688 | 66.9% | 13.3 min | 2.8% |
| HOU Houston | 4,304 | 65.7% | 13.6 min | 1.1% |
| AUS Austin | 3,430 | 68.4% | 10.7 min | 1.1% |
| SAN San Diego | 3,387 | 74.8% | 5.9 min | 0.7% |
| STL St. Louis | 3,324 | 72.9% | 9.2 min | 1.6% |
| SMF Sacramento | 2,686 | 82.5% | 2.0 min | 0.7% |
| TPA Tampa | 2,414 | 73.0% | 7.6 min | 2.9% |
| OAK Oakland | 2,301 | 78.8% | 4.8 min | 0.9% |
By scheduled departure hour
Delay causes
Questions and answers
What share of Southwest Airlines flights were on time in March 2026?
73.0% of 122,298 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 73.2% that month.
How does that compare with a year earlier?
In March 2025 the carrier reported 122,432 flights with 81.5% on time and 0.8% cancelled, against 73.0% and 1.6% in March 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for Southwest Airlines · methodology · corrections.