WN1552
WN1552 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Cleveland to St Louis. Of 738 departures recorded from October 2024 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 738 flights
- Average delay10.2 min
- July 202622▼ 29.0%vs July 2025
- Cancelled1.1%
- Legs flown under this number30
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 32 | 14 | ▼ 56.3% |
| February | 26 | 16 | ▼ 38.5% |
| March | 21 | 6 | ▼ 71.4% |
| April | 27 | 66 | ▲ 144.4% |
| May | 32 | 82 | ▲ 156.3% |
| June | 30 | 28 | ▼ 6.7% |
| July | 31 | 22 | ▼ 29.0% |
| August | 54 | – | – |
| September | 56 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 199 | 234 | ▲ 17.6% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 79.3% | 71.4% | ▼ 9.9% |
| February | 87.5% | 81.3% | ▼ 7.1% |
| March | 80.0% | 66.7% | ▼ 16.7% |
| April | 96.3% | 80.0% | ▼ 16.9% |
| May | 96.9% | 64.6% | ▼ 33.3% |
| June | 66.7% | 85.7% | ▲ 28.6% |
| July | 54.8% | 95.5% | ▲ 74.1% |
| August | 90.7% | – | – |
| September | 89.3% | – | – |
| October | 66.7% | – | in progress |
| November | 67.9% | – | – |
| December | 69.0% | – | – |
| Year-to-date average (Jan–Jul) | 80.2% | 77.9% | ▼ 2.9% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 0 | ▼ 100.0% |
| February | 2 | 0 | ▼ 100.0% |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 6 | 1 | ▼ 83.3% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.9% 730
- Cancelled 1.1% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CLE STL Cleveland Hopkins International Airport – St. Louis Lambert International Airport | 783 | 4.9 min | 86.7% | 118 |
| BUR SJC Hollywood Burbank/Bob Hope Airport – Mineta San Jose International Airport | 477 | 16.8 min | 70.5% | 62 |
| BUR RNO Hollywood Burbank/Bob Hope Airport – Reno Tahoe International Airport | 602 | 24.0 min | 59.0% | 61 |
| AUS PHX Austin Bergstrom International Airport – Phoenix Sky Harbor International Airport | 1,401 | -0.6 min | 96.6% | 58 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 17.1 min | 70.0% | 50 |
| LAS DAL Harry Reid International Airport – Dallas Love Field | 1,714 | 10.2 min | 78.6% | 42 |
| DEN IND Denver International Airport – Indianapolis International Airport | 1,568 | 2.3 min | 90.5% | 42 |
| OAK LAS Oakland San Francisco Bay Airport – Harry Reid International Airport | 654 | -1.3 min | 100.0% | 40 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 100.0% | 0 |
| November 2024 | 36 | 36 | 100.0% | 0 |
| December 2024 | 47 | 47 | 61.7% | 0 |
| January 2025 | 32 | 29 | 79.3% | 3 |
| February 2025 | 26 | 24 | 87.5% | 2 |
| March 2025 | 21 | 20 | 80.0% | 1 |
| April 2025 | 27 | 27 | 96.3% | 0 |
| May 2025 | 32 | 32 | 96.9% | 0 |
| June 2025 | 30 | 30 | 66.7% | 0 |
| July 2025 | 31 | 31 | 54.8% | 0 |
| August 2025 | 54 | 54 | 90.7% | 0 |
| September 2025 | 56 | 56 | 89.3% | 0 |
| October 2025 | 27 | 27 | 66.7% | 0 |
| November 2025 | 29 | 28 | 67.9% | 1 |
| December 2025 | 29 | 29 | 69.0% | 0 |
| January 2026 | 14 | 14 | 71.4% | 0 |
| February 2026 | 16 | 16 | 81.3% | 0 |
| March 2026 | 6 | 6 | 66.7% | 0 |
| April 2026 | 66 | 65 | 80.0% | 1 |
| May 2026 | 82 | 82 | 64.6% | 0 |
| June 2026 | 28 | 28 | 85.7% | 0 |
| July 2026 | 22 | 22 | 95.5% | 0 |