Route
DEN → BOI
Denver International Airport Boise Air Terminal/Gowen Field
How punctual is this route?
- On-time arrivals
- 76.3%
- Less than 15 minutes late
- Cancelled
- 0.1%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,038
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 52%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 15%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.8% | 250 |
| October 2025 | 78.4% | 260 |
| November 2025 | 88.3% | 245 |
| December 2025 | 73.0% | 259 |
| January 2026 | 82.8% | 256 |
| February 2026 | 85.0% | 234 |
| March 2026 | 75.4% | 253 |
| April 2026 | 82.3% | 248 |
| May 2026 | 75.9% | 261 |
| June 2026 | 59.3% | 253 |
| July 2026 | 71.1% | 259 |
| August 2026 | 63.7% | 260 |
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 | 1,089 | 71.8% | 0.1% | 52 min |
| United Airlines | 919 | 76.8% | 0.0% | 65 min |
| SkyWest Airlines | 898 | 80.7% | 0.2% | 74 min |
| Frontier Airlines | 132 | 81.1% | 0.0% | 41 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2014
31% late · 339 flights
-
OO5923
28% late · 298 flights
-
UA1125
13% late · 209 flights
-
UA2255
19% late · 156 flights
-
F93933
19% late · 131 flights
-
UA2602
38% late · 102 flights
-
OO6045
23% late · 78 flights
-
OO5788
6% late · 77 flights
-
WN1385
16% late · 64 flights
-
WN927
25% late · 64 flights
-
WN3806
64% late · 61 flights
-
OO4718
21% late · 58 flights
-
WN1418
26% late · 58 flights
-
WN1796
43% late · 58 flights
-
OO5927
9% late · 57 flights
-
WN1744
19% late · 57 flights
-
WN2259
22% late · 55 flights
-
OO5525
15% late · 52 flights
-
WN818
10% late · 51 flights
-
WN1795
31% late · 49 flights
-
OO4765
2% late · 47 flights
-
UA355
3% late · 39 flights
-
OO4762
24% late · 37 flights
-
OO4792
27% late · 37 flights
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