FlightRecord

Boise Air Terminal/Gowen Field (BOI): Delays & On-Time Performance

Data through July 2026

Boise Air Terminal/Gowen Field (BOI) runs noticeably smoother than most US airports: 85% of its ~65 daily departures leave on time, 7 points above the national average, with an average departure delay of just 11 minutes. 10 airlines fly from Boise, ID to 28 destinations.

Departures on-time
85%
left <15 min late
Avg dep delay
11 min
Arrivals on-time
81%
Cancelled
0.5%
Destinations
28
nonstop
Airlines
10

Plan your departure from BOI

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time
Around 6 a.m.
95% on-time
Best day to fly
Saturday
87% on-time
Most reliable airline here
SkyWest Airlines
88% on-time from BOI
Cancellation risk
0.5%
below the US average
Check routes from BOI ↓Compare nearby airports ↓

Monthly on-time trend

Monthly departure on-time percentage at BOI50%75%100%August 2024: 85% on-time (2,097 flights)85Aug 2024September 2024: 86% on-time (2,038 flights)86October 2024: 90% on-time (1,991 flights)90November 2024: 89% on-time (1,957 flights)89Nov 2024December 2024: 82% on-time (1,971 flights)82January 2025: 87% on-time (1,839 flights)87February 2025: 85% on-time (1,683 flights)85Feb 2025March 2025: 86% on-time (1,947 flights)86April 2025: 88% on-time (1,927 flights)88May 2025: 87% on-time (1,993 flights)87May 2025June 2025: 83% on-time (2,074 flights)83July 2025: 83% on-time (2,136 flights)83August 2025: 85% on-time (2,025 flights)85Aug 2025September 2025: 87% on-time (1,924 flights)87October 2025: 87% on-time (2,008 flights)87November 2025: 86% on-time (1,956 flights)86Nov 2025December 2025: 82% on-time (2,012 flights)82January 2026: 88% on-time (1,910 flights)88February 2026: 89% on-time (1,781 flights)89Feb 2026March 2026: 86% on-time (2,027 flights)86April 2026: 85% on-time (1,946 flights)85May 2026: 81% on-time (2,040 flights)81May 2026June 2026: 78% on-time (2,002 flights)78July 2026: 80% on-time (2,070 flights)80

Best time of day to depart from BOI

On-time percentage by scheduled departure hour at BOI5 a.m.: 95% on-time (3,341 flights)56 a.m.: 95% on-time (4,210 flights)67 a.m.: 94% on-time (5,024 flights)78 a.m.: 93% on-time (3,710 flights)89 a.m.: 90% on-time (1,676 flights)910 a.m.: 86% on-time (3,164 flights)1011 a.m.: 88% on-time (2,384 flights)1112 p.m.: 83% on-time (3,218 flights)121 p.m.: 81% on-time (4,852 flights)132 p.m.: 81% on-time (4,103 flights)143 p.m.: 79% on-time (2,254 flights)154 p.m.: 75% on-time (2,116 flights)165 p.m.: 77% on-time (3,585 flights)176 p.m.: 75% on-time (2,005 flights)187 p.m.: 78% on-time (2,542 flights)198 p.m.: 72% on-time (605 flights)209 p.m.: 61% on-time (249 flights)2111 p.m.: 67% on-time (361 flights)23scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday83%12 min
Tuesday87%9 min
Wednesday85%10 min
Thursday82%13 min
Friday81%15 min
Saturdaybest87%9 min
Sunday82%13 min

Next: compare the busiest routes from BOI ↓

Busiest routes from BOI

RouteFlights/12moOn-timeAvg delay
BOI → SEA (Seattle)3,76184%10 min
BOI → DEN (Denver)3,03382%14 min
BOI → PHX (Phoenix)2,01484%13 min
BOI → SLC (Salt Lake City)1,74090%8 min
BOI → SFO (San Francisco)1,71673%20 min
BOI → LAX (Los Angeles)1,37392%6 min
BOI → LAS (Las Vegas)1,36382%13 min
BOI → ORD (Chicago)1,11179%18 min
BOI → PDX (Portland)1,08490%7 min
BOI → SAN (San Diego)1,02881%11 min
BOI → SMF (Sacramento)86085%9 min
BOI → DFW (Dallas/Fort Worth)80280%19 min
BOI → MSP (Minneapolis)78385%11 min
BOI → SJC (San Jose)65887%7 min
BOI → OAK (Oakland)55486%9 min
BOI → ATL (Atlanta)54580%15 min
BOI → BUR (Burbank)43083%8 min
BOI → SNA (Santa Ana)35979%20 min
BOI → GEG (Spokane)29685%10 min

Compare airlines departing BOI ↓

Where flights into BOI come from

RouteFlights/12moOn-timeAvg delay
SEA (Seattle) → BOI3,88184%9 min
DEN (Denver) → BOI3,03776%15 min
PHX (Phoenix) → BOI2,01581%12 min
SLC (Salt Lake City) → BOI1,74186%10 min
SFO (San Francisco) → BOI1,71379%15 min
LAX (Los Angeles) → BOI1,37588%8 min
LAS (Las Vegas) → BOI1,36277%14 min
ORD (Chicago) → BOI1,10873%20 min

Most reliable routes

  1. BOI → LAX92%
  2. BOI → SLC90%
  3. BOI → PDX90%
  4. BOI → SJC87%
  5. BOI → OAK86%

Most delay-prone routes

  1. BOI → SFO73%
  2. BOI → SNA79%
  3. BOI → ORD79%
  4. BOI → DFW80%
  5. BOI → ATL80%

What causes delays at BOI

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing BOI.

  • Late-arriving aircraft35%
  • Airline operations36%
  • National airspace system24%
  • Weather5%

Alternative airports near Boise

Other airports within 120 miles, compared on departure reliability.

AirportDistanceOn-time departuresAvg delay
SUN — Friedman Memorial Airport97 mi87%16 min
TWF — Joslin Field Magic Valley Regional Airport115 mi95%6 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at BOI

AirlineOn-time departuresAvg delayFlights
SkyWest Airlines88%9 min23,064
Alaska Airlines88%8 min3,065
Delta Air Lines86%11 min5,620
United Airlines81%18 min3,179
Southwest Airlines81%11 min10,983
American Airlines79%21 min2,059
Spirit Airlines79%15 min373
Allegiant Air76%29 min581
Frontier Airlines75%30 min155
Envoy Air72%21 min414

Frequently asked questions

How often are flights delayed at BOI?
15% of departures from Boise Air Terminal/Gowen Field left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 11 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from BOI?
Flights scheduled around 6 a.m. depart on time 95% of the time at BOI, versus 61% around 9 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at BOI?
In this dataset, June 2026 was the weakest month at BOI, with 78% of departures on time.
How often are flights cancelled at BOI?
0.5% of scheduled departures from BOI were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 49,493 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.