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Route · SAT → SLC · 2020–2025 BTS data

San Antonio to Salt Lake City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SAT to SLC (San Antonio to Salt Lake City) ranks #2085 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

87.6%
On-time
+8.6 pts
vs US avg
101 min
Delay when late
5,970
Flights
#2085 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Oct 2024 95%

Worst Month

Jul 2024 67%

Distance

1,087 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 88 16 3 0 DL
Nov 2025 78 9 2 0 DL
Oct 2025 84 12 0 0 DL
Sep 2025 77 18 1 0 DL
Aug 2025 82 12 0 0 DL
Jul 2025 88 13 0 0 DL
Jun 2025 86 15 1 0 DL,OO
May 2025 87 18 0 0 DL
Apr 2025 86 17 0 0 DL
Mar 2025 88 11 0 0 DL
Feb 2025 74 10 0 0 DL
Jan 2025 82 10 2 0 DL
Dec 2024 87 16 0 0 DL
Nov 2024 78 9 0 0 DL
Oct 2024 83 4 0 0 DL
Sep 2024 80 4 0 0 DL
Aug 2024 92 10 1 1 DL
Jul 2024 91 30 5 0 DL
Jun 2024 89 20 0 0 DL
May 2024 88 16 0 0 DL
Apr 2024 87 9 0 0 DL
Mar 2024 88 11 0 0 DL
Feb 2024 78 6 0 0 DL
Jan 2024 87 13 0 0 DL

SAT–SLC seasonal on-time pattern

Best: March (91.7%) · weakest: June (82.3%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 84.6%

Strongest calendar month

March

91.7% on-time · ~86 flights/mo

Busiest calendar month

August

~90 flights/mo avg

Weakest calendar month

June

82.3% on-time · ~84 flights/mo

Cancellation Rate

0.7%

15 of 2,028 flights

Diversion Rate

0.0%

1 of 2,028 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

SLC - Salt Lake City

Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.

SLC on-time profile

Compare the two airports

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

Compare SAT vs SLC

Origin-hub reliability standing

Among SAT's stronger departures

SAT → SLC posts a 87.6% 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 #499 of 4927 (highest on-time = #1).

What the Data Says About SAT to SLC

San Antonio to Salt Lake City (SAT to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.6% on-time rate across 5,970 flights, with delays that do happen averaging 100.6 minutes. The corridor runs roughly 1,087 miles and is served by 4 carriers. Over the most recent 24 months, 15 of 2,028 flights were cancelled (0.7%) and 1 diverted (0.0%).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 95% on-time, while Jul 2024 came in at just 67% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, SAT–SLC peaks in March at 91.7% on-time while August carries the heaviest traffic (~90 flights per month) ; the softest month is June at 82.3%, a 9.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SAT to SLC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SAT to SLC ranks #2085 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 SLC? ▼
Flights from San Antonio to Salt Lake City have a 87.6% on-time rate based on 5,970 flights. The average delay is 100.6 minutes. The best recent month was Oct 2024 with 95% on-time.
What is the cancellation rate for SAT to SLC? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (15 of 2,028 flights) and 0.0% were diverted.
How far is the flight from SAT to SLC? ▼
The flight distance from San Antonio (SAT) to Salt Lake City (SLC) is approximately 1,087 miles. This route is served by 4 carriers.
When is the best time to fly from SAT to SLC? ▼
The best recent month for on-time performance was Oct 2024 (95% on-time). The worst was Jul 2024 (67% on-time). Consider booking during months with historically better performance.

Airports on this route

SAT Airport

San Antonio
SLC Airport

Salt Lake City
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–SLC data

SAT–SLC runs 8.6 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 SLC airport profiles: delay causes and top routes differ even on the same corridor. SAT airport
  • If your dates flex, March (91.7% on-time) beats June (82.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 87.6% 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.