WN1855
WN1855 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Manchester to Baltimore. Of 616 departures recorded from October 2024 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 616 flights
- Average delay10.2 min
- July 202615▼ 51.6%vs July 2025
- Cancelled0.3%
- Legs flown under this number28
according to the US BTS · Oct 14, 2024 → Jul 29, 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 | 28 | 32 | ▲ 14.3% |
| February | 26 | 42 | ▲ 61.5% |
| March | 27 | 34 | ▲ 25.9% |
| April | 26 | 22 | ▼ 15.4% |
| May | 25 | 23 | ▼ 8.0% |
| June | 30 | 12 | ▼ 60.0% |
| July | 31 | 15 | ▼ 51.6% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 37 | – | – |
| December | 43 | – | – |
| Year to date (Jan–Jul) | 193 | 180 | ▼ 6.7% |
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 | 88.9% | 90.6% | ▲ 2.0% |
| February | 88.5% | 73.8% | ▼ 16.6% |
| March | 96.3% | 70.6% | ▼ 26.7% |
| April | 96.2% | 68.2% | ▼ 29.1% |
| May | 96.0% | 65.2% | ▼ 32.1% |
| June | 40.0% | 91.7% | ▲ 129.2% |
| July | 38.7% | 100.0% | ▲ 158.3% |
| August | 70.0% | – | – |
| September | 80.0% | – | – |
| October | 90.3% | – | in progress |
| November | 91.9% | – | – |
| December | 81.0% | – | – |
| Year-to-date average (Jan–Jul) | 77.8% | 80.0% | ▲ 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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 99.7% 614
- Cancelled 0.3% 2
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| MHT BWI Manchester-Boston Regional Airport – Baltimore/Washington International Thurgood Marshall Airport | 606 | 2.4 min | 91.8% | 74 |
| OAK BUR Oakland San Francisco Bay Airport – Hollywood Burbank/Bob Hope Airport | 523 | 36.0 min | 42.4% | 59 |
| DAL ABQ Dallas Love Field – Albuquerque International Sunport | 933 | 11.4 min | 79.0% | 57 |
| SEA OAK Seattle–Tacoma International Airport – Oakland San Francisco Bay Airport | 1,082 | 4.2 min | 87.8% | 49 |
| BWI PVD Baltimore/Washington International Thurgood Marshall Airport – Rhode Island T. F. Green International Airport | 526 | 4.3 min | 91.5% | 47 |
| PIT BNA Pittsburgh International Airport – Nashville International Airport | 743 | 1.8 min | 95.2% | 42 |
| LAX SJC Los Angeles International Airport – Mineta San Jose International Airport | 496 | 13.6 min | 67.5% | 40 |
| MSY LAS Louis Armstrong New Orleans International Airport – Harry Reid International Airport | 2,409 | 4.6 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 92.3% | 0 |
| November 2024 | 28 | 28 | 82.1% | 0 |
| December 2024 | 31 | 31 | 80.7% | 0 |
| January 2025 | 28 | 27 | 88.9% | 1 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 27 | 27 | 96.3% | 0 |
| April 2025 | 26 | 26 | 96.2% | 0 |
| May 2025 | 25 | 25 | 96.0% | 0 |
| June 2025 | 30 | 30 | 40.0% | 0 |
| July 2025 | 31 | 31 | 38.7% | 0 |
| August 2025 | 30 | 30 | 70.0% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 37 | 37 | 91.9% | 0 |
| December 2025 | 43 | 42 | 81.0% | 1 |
| January 2026 | 32 | 32 | 90.6% | 0 |
| February 2026 | 42 | 42 | 73.8% | 0 |
| March 2026 | 34 | 34 | 70.6% | 0 |
| April 2026 | 22 | 22 | 68.2% | 0 |
| May 2026 | 23 | 23 | 65.2% | 0 |
| June 2026 | 12 | 12 | 91.7% | 0 |
| July 2026 | 15 | 15 | 100.0% | 0 |