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Route · SFO → BOI · 2020–2025 BTS data

San Francisco to Boise

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SFO to BOI (San Francisco to Boise) ranks #1233 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84%
On-time
+5 pts
vs US avg
75 min
Delay when late
9,544
Flights
#1233 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Jan 2025 91%

Worst Month

Feb 2024 67%

Distance

522 mi

Carriers

6

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 151 48 1 0 UA,OO
Nov 2025 148 22 1 2 OO,UA
Oct 2025 131 28 0 0 OO,UA
Sep 2025 113 23 0 0 UA,OO
Aug 2025 116 29 0 0 OO,UA
Jul 2025 119 29 0 0 OO,UA
Jun 2025 121 20 0 0 OO,UA
May 2025 138 24 0 0 OO,UA
Apr 2025 129 22 0 0 OO,UA
Mar 2025 124 18 0 0 OO,UA
Feb 2025 112 21 0 0 OO,UA
Jan 2025 130 12 1 0 OO,UA
Dec 2024 153 41 3 1 OO,UA
Nov 2024 147 25 5 1 OO,UA
Oct 2024 155 31 0 0 UA,OO
Sep 2024 143 25 0 0 OO,UA
Aug 2024 133 23 1 0 OO,UA
Jul 2024 116 15 1 0 OO,UA
Jun 2024 89 22 0 0 OO,UA
May 2024 116 22 0 0 OO,UA
Apr 2024 105 19 1 0 OO
Mar 2024 106 14 1 0 OO,UA
Feb 2024 106 35 5 0 OO,UA
Jan 2024 108 28 0 1 OO,UA

SFO–BOI seasonal on-time pattern

Best: November (87.8%) · weakest: December (75.1%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 75.1%

Strongest calendar month

November

87.8% on-time · ~143 flights/mo

Busiest calendar month

October

~147 flights/mo avg

Weakest calendar month

December

75.1% on-time · ~144 flights/mo

Cancellation Rate

0.7%

20 of 3,009 flights

Diversion Rate

0.2%

5 of 3,009 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

SFO - San Francisco

Full on-time, delay-cause, and seasonal performance for San Francisco, CA.

SFO on-time profile

BOI - Boise

Full on-time, delay-cause, and seasonal performance for Boise, ID.

BOI on-time profile

Compare the two airports

See SFO and BOI side by side on delays, cancellations, and reliability.

Compare SFO vs BOI

Origin-hub reliability standing

Mid-pack among SFO departures

From SFO, this corridor sits with 50 other 75–85% on-time routes out of 73 tracked departures, not the hub's reliability leaders (20 at ≥85%) and not the softest ( 3 below 75%). Destination: Boise · fleet on-time rank #1590 of 4927.

What the Data Says About SFO to BOI

Bureau of Transportation Statistics records show San Francisco to Boise (SFO to BOI) running a 84% on-time rate over 9,544 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 75.4 minutes. The 522-mile corridor is served by 6 carriers, and over the last 24 months 0.7% of 3,009 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Jan 2025 posted the strongest performance at 91% on-time, while Feb 2024 came in at just 67% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, SFO–BOI peaks in November at 87.8% on-time while October carries the heaviest traffic (~147 flights per month) ; the softest month is December at 75.1%, a 12.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SFO to BOI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SFO to BOI ranks #1233 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from SFO to BOI? ▼
Flights from San Francisco to Boise have a 84% on-time rate based on 9,544 flights. The average delay is 75.4 minutes. The best recent month was Jan 2025 with 91% on-time.
What is the cancellation rate for SFO to BOI? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (20 of 3,009 flights) and 0.2% were diverted.
How far is the flight from SFO to BOI? ▼
The flight distance from San Francisco (SFO) to Boise (BOI) is approximately 522 miles. This route is served by 6 carriers.
When is the best time to fly from SFO to BOI? ▼
The best recent month for on-time performance was Jan 2025 (91% on-time). The worst was Feb 2024 (67% on-time). Consider booking during months with historically better performance.

Airports on this route

SFO Airport

San Francisco
BOI Airport

Boise
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using SFO–BOI data

SFO–BOI runs 5 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SFO and BOI airport profiles: delay causes and top routes differ even on the same corridor. SFO airport
  • If your dates flex, November (87.8% on-time) beats December (75.1%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.