Route · SAT → BOS · 2020–2025 BTS data
San Antonio to Boston
The SAT–BOS corridor (San Antonio, TX → Boston, MA) runs behind the national average, served by 2 carriers across roughly 1,764 miles.
Data updated 2026-06-13
- 64.2%
- On-time
- -14.8 pts
- vs US avg
- 88 min
- Delay when late
- 1,008
- Flights
Cancelled
1.4%
Best Month
N/A
Worst Month
N/A
Distance
1,764 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 30 | 19 | 0 | 0 | DL |
| Sep 2025 | 30 | 23 | 0 | 0 | DL |
| Aug 2025 | 30 | 8 | 0 | 2 | DL |
| Jul 2025 | 30 | 14 | 0 | 0 | DL |
| Jun 2025 | 30 | 12 | 1 | 0 | DL |
| May 2025 | 31 | 13 | 1 | 0 | DL |
| Aug 2024 | 31 | 14 | 1 | 1 | B6 |
| Jul 2024 | 31 | 13 | 1 | 0 | B6 |
| Jun 2024 | 30 | 9 | 0 | 1 | B6 |
| May 2024 | 31 | 8 | 0 | 0 | B6 |
| Apr 2024 | 30 | 5 | 0 | 1 | B6 |
| Mar 2024 | 31 | 11 | 0 | 0 | B6 |
| Jan 2024 | 31 | 6 | 1 | 0 | B6 |
| Dec 2023 | 31 | 10 | 1 | 0 | B6 |
| Nov 2023 | 30 | 5 | 0 | 0 | B6 |
| Oct 2023 | 31 | 15 | 0 | 0 | B6 |
| Sep 2023 | 30 | 14 | 3 | 1 | B6 |
| Aug 2023 | 31 | 14 | 1 | 0 | B6 |
| Jul 2023 | 31 | 11 | 0 | 2 | B6 |
| Jun 2023 | 30 | 7 | 0 | 0 | B6 |
| May 2023 | 31 | 5 | 0 | 0 | B6 |
| Apr 2023 | 30 | 12 | 0 | 0 | B6 |
| Mar 2023 | 31 | 7 | 0 | 0 | B6 |
| Jan 2023 | 31 | 10 | 0 | 0 | B6 |
Cancellation Rate
1.4%
10 of 733 flights
Diversion Rate
1.1%
8 of 733 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.
Origin airport →BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Destination airport →Compare the two airports
See SAT and BOS side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SAT–BOS.
Routes with a similar on-time rate
What the Data Says About SAT to BOS
San Antonio to Boston (SAT to BOS) sits among the less reliable pairings in the BTS dataset, on-time only 64.2% of the time across 1,008 flights, with a 87.9-minute average delay when service runs late. Carriers on this 1,764-mile route (2 total) show a 1.4% cancellation rate and 1.1% diversion rate over the last 24 months (10 of 733 flights cancelled).
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
Frequently Asked Questions
How often are flights delayed from SAT to BOS? ▼
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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.
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.