PlainFlights

Route · SAT → SFO · 2020–2025 BTS data

San Antonio to San Francisco

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SAT to SFO (San Antonio to San Francisco) ranks #4027 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

88.3%
On-time
+9.3 pts
vs US avg
94 min
Delay when late
1,680
Flights
#4027 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Oct 2024 92%

Worst Month

Nov 2024 76%

Distance

1,482 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 47 6 1 0 UA,OO
Nov 2025 49 5 0 0 OO
Oct 2025 56 10 0 0 OO,UA
Sep 2025 35 2 0 0 UA,OO
Aug 2025 31 2 0 0 OO,UA
Jul 2025 31 2 0 0 UA
Jun 2025 30 2 0 0 UA
May 2025 46 5 0 0 OO,UA
Apr 2025 46 3 0 0 OO
Mar 2025 60 9 0 0 OO
Feb 2025 39 6 0 0 OO,UA
Jan 2025 35 2 0 0 OO,UA
Dec 2024 41 7 0 0 OO,UA
Nov 2024 54 13 1 0 OO,UA
Oct 2024 62 5 0 0 UA,OO
Sep 2024 35 1 0 0 OO,UA
Aug 2024 31 2 0 0 UA
Jul 2024 31 4 1 1 UA
Jun 2024 30 2 0 0 UA
May 2024 31 15 0 0 OO,UA
Apr 2024 30 14 1 0 OO
Mar 2024 31 17 0 0 OO
Jan 2024 31 6 1 0 OO,UA
Dec 2023 32 7 0 0 UA

SAT–SFO seasonal on-time pattern

Best: September (95.4%) · weakest: April (81.6%)

80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 84.8%

Strongest calendar month

September

95.4% on-time · ~33 flights/mo

Busiest calendar month

October

~42 flights/mo avg

Weakest calendar month

April

81.6% on-time · ~34 flights/mo

Cancellation Rate

0.5%

5 of 944 flights

Diversion Rate

0.1%

1 of 944 flights

Explore origin & destination

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

SAT - San Antonio

Full on-time, delay-cause, and seasonal performance for San Antonio, TX.

SAT on-time profile

SFO - San Francisco

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

SFO on-time profile

Compare the two airports

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

Compare SAT vs SFO

Origin-hub reliability standing

Among SAT's stronger departures

SAT → SFO posts a 88.3% on-time rate, landing in the ≥85% band with 17 of 31 BTS-tracked routes leaving San Antonio. The same hub also shows 12 mid-band and 2 challenged departures · fleet-wide on-time rank #375 of 4927 (highest on-time = #1).

What the Data Says About SAT to SFO

San Antonio to San Francisco (SAT to SFO) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.3% on-time rate across 1,680 flights, with delays that do happen averaging 94.4 minutes. The corridor runs roughly 1,482 miles and is served by 4 carriers. Over the most recent 24 months, 5 of 944 flights were cancelled (0.5%) and 1 diverted (0.1%).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 92% on-time, while Nov 2024 came in at just 76% - a 16-point swing worth factoring into travel timing.

On the multi-year calendar, SAT–SFO peaks in September at 95.4% on-time while October carries the heaviest traffic (~42 flights per month) ; the softest month is April at 81.6%, a 13.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SAT to SFO rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SAT to SFO ranks #4027 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 SAT to SFO? ▼
Flights from San Antonio to San Francisco have a 88.3% on-time rate based on 1,680 flights. The average delay is 94.4 minutes. The best recent month was Oct 2024 with 92% on-time.
What is the cancellation rate for SAT to SFO? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (5 of 944 flights) and 0.1% were diverted.
How far is the flight from SAT to SFO? ▼
The flight distance from San Antonio (SAT) to San Francisco (SFO) is approximately 1,482 miles. This route is served by 4 carriers.
When is the best time to fly from SAT to SFO? ▼
The best recent month for on-time performance was Oct 2024 (92% on-time). The worst was Nov 2024 (76% on-time). Consider booking during months with historically better performance.

Airports on this route

SAT Airport

San Antonio
SFO Airport

San Francisco
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 SAT–SFO data

SAT–SFO runs 9.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SAT and SFO airport profiles: delay causes and top routes differ even on the same corridor. SAT airport
  • If your dates flex, September (95.4% on-time) beats April (81.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 88.3% 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.