YX3639
YX3639 (Republic Airways) is a multi-stop service on 21 routes, busiest Chicago to Grand Rapids. Of 606 departures recorded from October 2024 to July 2026, 85.2% left on time, according to the US BTS.
- On-time departures85.2%of 606 flights
- Average delay7.5 min
- July 202631▲ 0.0%vs July 2025
- Cancelled3.3%
- Legs flown under this number21
according to the US BTS · Oct 27, 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 | 31 | 5 | ▼ 83.9% |
| February | 27 | 26 | ▼ 3.7% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 12 | 41 | ▲ 241.7% |
| June | 16 | 54 | ▲ 237.5% |
| July | 31 | 31 | 0.0% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 178 | 218 | ▲ 22.5% |
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 | 93.3% | 100.0% | ▲ 7.1% |
| February | 88.9% | 91.7% | ▲ 3.1% |
| March | 93.6% | 64.5% | ▼ 31.0% |
| April | 83.3% | 83.3% | 0.0% |
| May | 83.3% | 90.0% | ▲ 8.0% |
| June | 85.7% | 92.6% | ▲ 8.0% |
| July | 57.7% | 85.2% | ▲ 47.7% |
| August | 82.1% | – | – |
| September | 92.3% | – | – |
| October | 93.6% | – | in progress |
| November | 80.8% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 83.7% | 86.8% | ▲ 3.7% |
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 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 5 | 4 | ▼ 20.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 8 | 7 | ▼ 12.5% |
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 96.7% 586
- Cancelled 3.3% 20
Share of all recorded flights in the period, all legs. · Oct 27, 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 |
|---|---|---|---|---|
| ORD GRR Chicago O'Hare International Airport – Gerald R. Ford International Airport | 220 | 2.5 min | 91.2% | 115 |
| GRR EWR Gerald R. Ford International Airport – Newark Liberty International Airport | 971 | 13.2 min | 78.7% | 75 |
| EWR RIC Newark Liberty International Airport – Richmond International Airport | 446 | 0.9 min | 88.1% | 72 |
| PWM EWR Portland International Jetport – Newark Liberty International Airport | 458 | -4.6 min | 96.9% | 64 |
| MCI EWR Kansas City International Airport – Newark Liberty International Airport | 1,753 | 53.0 min | 64.6% | 56 |
| ORD CLE Chicago O'Hare International Airport – Cleveland Hopkins International Airport | 507 | 12.2 min | 76.6% | 50 |
| EWR SDF Newark Liberty International Airport – Louisville Muhammad Ali International Airport | 1,031 | 0.4 min | 82.9% | 36 |
| PIT IAD Pittsburgh International Airport – Washington Dulles International Airport | 293 | 2.4 min | 84.4% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 5 | 5 | 80.0% | 0 |
| November 2024 | 29 | 28 | 82.1% | 1 |
| December 2024 | 30 | 30 | 90.0% | 0 |
| January 2025 | 31 | 30 | 93.3% | 1 |
| February 2025 | 27 | 27 | 88.9% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 12 | 12 | 83.3% | 0 |
| June 2025 | 16 | 14 | 85.7% | 2 |
| July 2025 | 31 | 26 | 57.7% | 5 |
| August 2025 | 29 | 28 | 82.1% | 1 |
| September 2025 | 26 | 26 | 92.3% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 29 | 26 | 80.8% | 3 |
| December 2025 | 31 | 31 | 77.4% | 0 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| February 2026 | 26 | 24 | 91.7% | 2 |
| March 2026 | 31 | 31 | 64.5% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 41 | 40 | 90.0% | 1 |
| June 2026 | 54 | 54 | 92.6% | 0 |
| July 2026 | 31 | 27 | 85.2% | 4 |