Flight OddsDL4155 SEA → MFR
Delta Air Lines · Seattle, WA to Medford, OR · 172 flights observed, 2025-07-01 to 2025-12-19 · 352 mi
DL4155 covers more than one route in the data window — the stats below are for SEA → MFR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
90%
Median delay
-12 min
90th percentile
+16 min
Cancellation rate
3%
How often is DL4155 on time?
Across 172 flights on SEA → MFR from 2025-07-01 to 2025-12-19, DL4155 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +16 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 149 | 90% |
| 16-30 min | 9 | 5% |
| 31-60 min | 5 | 3% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 97% | -7 min |
| 2025-08 | 31 | 97% | -12 min |
| 2025-09 | 30 | 90% | -10 min |
| 2025-10 | 31 | 97% | -11 min |
| 2025-11 | 25 | 80% | +3 min |
| 2025-12 | 18 | 67% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 24 | 83% |
| Tue | 24 | 96% |
| Wed | 24 | 96% |
| Thu | 24 | 92% |
| Fri | 25 | 88% |
| Sat | 23 | 87% |
| Sun | 22 | 86% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…