G4639
G4639 (Allegiant Air) is a multi-stop service on 7 routes, busiest Bismarck to Mesa. Of 210 departures recorded from October 2024 to July 2026, 82.9% left on time, according to the US BTS.
- On-time departures82.9%of 210 flights
- Average delay10.5 min
- July 202610▼ 23.1%vs July 2025
- Cancelled0.0%
- Legs flown under this number7
Recorded departures by month
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 | 7 | 21 | ▲ 200.0% |
| February | 7 | 7 | 0.0% |
| March | 8 | 7 | ▼ 12.5% |
| April | 11 | 9 | ▼ 18.2% |
| May | 11 | 9 | ▼ 18.2% |
| June | 13 | 8 | ▼ 38.5% |
| July | 13 | 10 | ▼ 23.1% |
| August | 9 | – | – |
| September | 9 | – | – |
| October | 9 | – | in progress |
| November | 12 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 70 | 71 | ▲ 1.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 85.7% | 76.2% | ▼ 11.1% |
| February | 100.0% | 100.0% | 0.0% |
| March | 87.5% | 85.7% | ▼ 2.0% |
| April | 100.0% | 88.9% | ▼ 11.1% |
| May | 100.0% | 88.9% | ▼ 11.1% |
| June | 84.6% | 75.0% | ▼ 11.4% |
| July | 92.3% | 30.0% | ▼ 67.5% |
| August | 100.0% | – | – |
| September | 66.7% | – | – |
| October | 77.8% | – | in progress |
| November | 75.0% | – | – |
| December | 73.3% | – | – |
| Year-to-date average (Jan–Jul) | 92.9% | 77.8% | ▼ 16.2% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 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 | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 0 |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 100.0% 210
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 30, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BIS AZA Bismarck Municipal Airport – Mesa Gateway Airport | 1,758 | 30.9 min | 76.0% | 50 |
| AZA EUG Mesa Gateway Airport – Eugene Airport | 1,563 | -4.1 min | 93.0% | 43 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 100.0% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| December 2024 | 7 | 7 | 71.4% | 0 |
| January 2025 | 7 | 7 | 85.7% | 0 |
| February 2025 | 7 | 7 | 100.0% | 0 |
| March 2025 | 8 | 8 | 87.5% | 0 |
| April 2025 | 11 | 11 | 100.0% | 0 |
| May 2025 | 11 | 11 | 100.0% | 0 |
| June 2025 | 13 | 13 | 84.6% | 0 |
| July 2025 | 13 | 13 | 92.3% | 0 |
| August 2025 | 9 | 9 | 100.0% | 0 |
| September 2025 | 9 | 9 | 66.7% | 0 |
| October 2025 | 9 | 9 | 77.8% | 0 |
| November 2025 | 12 | 12 | 75.0% | 0 |
| December 2025 | 15 | 15 | 73.3% | 0 |
| January 2026 | 21 | 21 | 76.2% | 0 |
| February 2026 | 7 | 7 | 100.0% | 0 |
| March 2026 | 7 | 7 | 85.7% | 0 |
| April 2026 | 9 | 9 | 88.9% | 0 |
| May 2026 | 9 | 9 | 88.9% | 0 |
| June 2026 | 8 | 8 | 75.0% | 0 |
| July 2026 | 10 | 10 | 30.0% | 0 |