Route
PDX → DEN
Portland International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 82.3%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4,280
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Air traffic control & airport 33%
- Airline (crew, maintenance, cleaning) 27%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.9% | 395 |
| October 2025 | 85.8% | 395 |
| November 2025 | 90.2% | 344 |
| December 2025 | 76.5% | 346 |
| January 2026 | 87.7% | 270 |
| February 2026 | 86.5% | 245 |
| March 2026 | 88.1% | 293 |
| April 2026 | 88.1% | 303 |
| May 2026 | 83.7% | 367 |
| June 2026 | 78.1% | 435 |
| July 2026 | 80.2% | 457 |
| August 2026 | 72.9% | 430 |
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 |
|---|---|---|---|---|
| United Airlines | 1,820 | 91.2% | 0.5% | 82 min |
| Southwest Airlines | 1,548 | 73.6% | 0.3% | 54 min |
| Alaska Airlines | 643 | 78.6% | 0.3% | 59 min |
| Frontier Airlines | 256 | 82.1% | 0.4% | 57 min |
| SkyWest Airlines | 13 | 69.2% | 0.0% | 49 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2375
3% late · 365 flights
-
UA459
3% late · 362 flights
-
UA1787
18% late · 251 flights
-
F91790
17% late · 231 flights
-
UA2334
10% late · 211 flights
-
AS684
11% late · 187 flights
-
UA1411
14% late · 184 flights
-
AS1346
26% late · 126 flights
-
UA2190
9% late · 107 flights
-
UA2254
10% late · 103 flights
-
UA2793
10% late · 81 flights
-
AS1809
40% late · 70 flights
-
AS1627
35% late · 68 flights
-
WN1938
16% late · 64 flights
-
AS401
7% late · 60 flights
-
WN2519
47% late · 60 flights
-
WN3195
7% late · 60 flights
-
WN4014
36% late · 60 flights
-
WN2944
14% late · 58 flights
-
WN3704
57% late · 58 flights
-
WN1527
18% late · 57 flights
-
WN3067
9% late · 57 flights
-
WN3703
23% late · 57 flights
-
UA2293
11% late · 55 flights
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