Route
DEN → BWI
Denver International Airport Baltimore/Washington International Thurgood Marshall Airport
How punctual is this route?
- On-time arrivals
- 77.3%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,781
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Airline (crew, maintenance, cleaning) 32%
- Air traffic control & airport 17%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.2% | 265 |
| October 2025 | 86.6% | 269 |
| November 2025 | 82.6% | 239 |
| December 2025 | 78.6% | 240 |
| January 2026 | 86.9% | 201 |
| February 2026 | 82.8% | 185 |
| March 2026 | 78.3% | 212 |
| April 2026 | 83.2% | 203 |
| May 2026 | 75.1% | 207 |
| June 2026 | 64.2% | 248 |
| July 2026 | 65.2% | 264 |
| August 2026 | 68.5% | 248 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 1,917 | 74.9% | 1.1% | 56 min |
| United Airlines | 839 | 82.2% | 0.6% | 57 min |
| Frontier Airlines | 25 | 92.0% | 0.0% | 100 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1362
11% late · 330 flights
-
UA709
23% late · 295 flights
-
WN2434
8% late · 64 flights
-
WN1501
38% late · 61 flights
-
WN4434
22% late · 60 flights
-
WN1810
57% late · 58 flights
-
WN4144
16% late · 58 flights
-
WN1813
7% late · 57 flights
-
WN2432
42% late · 54 flights
-
WN1500
73% late · 52 flights
-
WN1499
63% late · 51 flights
-
WN3324
10% late · 49 flights
-
WN2433
34% late · 47 flights
-
WN3150
14% late · 47 flights
-
WN3212
2% late · 47 flights
-
UA1646
51% late · 46 flights
-
WN1498
16% late · 43 flights
-
WN1842
10% late · 42 flights
-
WN2125
50% late · 42 flights
-
UA780
3% late · 36 flights
-
WN1045
41% late · 36 flights
-
UA1418
11% late · 35 flights
-
WN982
6% late · 34 flights
-
WN2272
55% late · 33 flights
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