Route
BOI → SEA
Boise Air Terminal/Gowen Field Seattle–Tacoma International Airport
How punctual is this route?
- On-time arrivals
- 84.9%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,730
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 53%
- Air traffic control & airport 23%
- Extreme weather 13%
- Late-arriving aircraft 11%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.1% | 330 |
| October 2025 | 85.0% | 301 |
| November 2025 | 85.9% | 252 |
| December 2025 | 87.3% | 238 |
| January 2026 | 83.8% | 292 |
| February 2026 | 92.8% | 293 |
| March 2026 | 88.4% | 369 |
| April 2026 | 89.3% | 356 |
| May 2026 | 84.7% | 366 |
| June 2026 | 81.7% | 312 |
| July 2026 | 78.2% | 303 |
| August 2026 | 77.9% | 318 |
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 |
|---|---|---|---|---|
| SkyWest Airlines | 2,754 | 85.9% | 0.3% | 66 min |
| Alaska Airlines | 976 | 82.2% | 0.7% | 49 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO3775
5% late · 361 flights
-
OO3740
18% late · 346 flights
-
OO3678
10% late · 334 flights
-
OO4127
17% late · 333 flights
-
OO3750
13% late · 239 flights
-
OO3688
24% late · 227 flights
-
AS345
12% late · 208 flights
-
AS468
24% late · 186 flights
-
OO3712
10% late · 110 flights
-
OO3594
17% late · 106 flights
-
OO3959
6% late · 98 flights
-
OO3958
21% late · 81 flights
-
AS230
11% late · 70 flights
-
AS423
1% late · 70 flights
-
AS740
52% late · 70 flights
-
AS296
29% late · 69 flights
-
AS1019
24% late · 55 flights
-
AS929
9% late · 55 flights
-
AS474
4% late · 49 flights
-
OO3321
18% late · 41 flights
-
OO3038
21% late · 35 flights
-
OO3065
3% late · 35 flights
-
OO3066
6% late · 35 flights
-
AS231
6% late · 34 flights
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