Route
BOI → DEN
Boise Air Terminal/Gowen Field Denver International Airport
How punctual is this route?
- On-time arrivals
- 81.7%
- Less than 15 minutes late
- Cancelled
- 0.1%
- Of scheduled flights
- Average delay when late
- 87 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,034
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 33%
- Late-arriving aircraft 28%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.1% | 250 |
| October 2025 | 81.5% | 259 |
| November 2025 | 84.5% | 245 |
| December 2025 | 85.6% | 258 |
| January 2026 | 90.2% | 255 |
| February 2026 | 82.8% | 233 |
| March 2026 | 85.7% | 253 |
| April 2026 | 82.7% | 248 |
| May 2026 | 79.5% | 261 |
| June 2026 | 74.8% | 253 |
| July 2026 | 78.1% | 259 |
| August 2026 | 73.7% | 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 | 1,088 | 78.4% | 0.2% | 64 min |
| United Airlines | 919 | 80.7% | 0.2% | 107 min |
| SkyWest Airlines | 895 | 86.6% | 0.0% | 99 min |
| Frontier Airlines | 132 | 81.8% | 0.0% | 107 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1782
9% late · 364 flights
-
UA2173
24% late · 364 flights
-
OO5924
9% late · 268 flights
-
OO6041
9% late · 145 flights
-
OO5837
18% late · 135 flights
-
F93934
18% late · 131 flights
-
UA2395
53% late · 102 flights
-
WN1375
12% late · 64 flights
-
WN1376
6% late · 64 flights
-
WN698
3% late · 61 flights
-
WN699
8% late · 61 flights
-
WN2061
14% late · 58 flights
-
OO4637
33% late · 55 flights
-
OO5526
15% late · 52 flights
-
WN700
69% late · 51 flights
-
WN2914
13% late · 47 flights
-
WN685
15% late · 47 flights
-
WN1002
17% late · 42 flights
-
WN3379
21% late · 42 flights
-
WN2756
72% late · 40 flights
-
OO4682
6% late · 36 flights
-
OO4700
11% late · 36 flights
-
OO4730
26% late · 35 flights
-
WN4625
9% late · 34 flights
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