Route · SAT → IAD · 2020–2025 BTS data
San Antonio to Washington
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SAT to IAD (San Antonio to Washington) ranks #3195 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 91.2%
- On-time
- +12.2 pts
- vs US avg
- 86 min
- Delay when late
- 3,290
- Flights
- #3195 of 4927
- Corpus placement
Cancelled
1.2%
Best Month
Feb 2024 98%
Worst Month
Jan 2025 78%
Distance
1,362 mi
Carriers
7
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 58 | 5 | 0 | 0 | UA |
| Nov 2025 | 60 | 3 | 0 | 0 | UA |
| Oct 2025 | 55 | 3 | 1 | 0 | UA |
| Sep 2025 | 51 | 3 | 0 | 0 | UA |
| Aug 2025 | 51 | 1 | 0 | 0 | UA |
| Jul 2025 | 58 | 7 | 0 | 2 | UA |
| Jun 2025 | 51 | 7 | 0 | 1 | UA |
| May 2025 | 54 | 8 | 1 | 0 | UA |
| Apr 2025 | 56 | 4 | 0 | 0 | UA |
| Mar 2025 | 51 | 2 | 0 | 0 | UA |
| Feb 2025 | 48 | 6 | 0 | 0 | UA |
| Jan 2025 | 54 | 12 | 0 | 0 | UA |
| Dec 2024 | 55 | 8 | 1 | 0 | UA |
| Nov 2024 | 51 | 4 | 0 | 0 | UA |
| Oct 2024 | 57 | 4 | 0 | 0 | UA |
| Sep 2024 | 48 | 4 | 0 | 0 | UA |
| Aug 2024 | 54 | 3 | 2 | 1 | UA |
| Jul 2024 | 58 | 8 | 0 | 0 | UA |
| Jun 2024 | 54 | 10 | 0 | 0 | UA |
| May 2024 | 61 | 9 | 0 | 0 | UA |
| Apr 2024 | 60 | 2 | 0 | 0 | UA |
| Mar 2024 | 54 | 3 | 1 | 0 | UA |
| Feb 2024 | 52 | 1 | 0 | 0 | UA |
| Jan 2024 | 56 | 5 | 10 | 0 | UA |
SAT–IAD seasonal on-time pattern
Best: October (95.3%) · weakest: July (85.2%)
Strongest calendar month
October
95.3% on-time · ~50 flights/mo
Busiest calendar month
May
~53 flights/mo avg
Weakest calendar month
July
85.2% on-time · ~53 flights/mo
Cancellation Rate
1.2%
16 of 1,307 flights
Diversion Rate
0.3%
4 of 1,307 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 profileIAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
IAD on-time profileCompare the two airports
See SAT and IAD side by side on delays, cancellations, and reliability.
Compare SAT vs IADOrigin-hub reliability standing
Among SAT's stronger departures
SAT → IAD posts a 91.2% 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 #82 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SAT–IAD.
Routes with a similar on-time rate
What the Data Says About SAT to IAD
San Antonio to Washington (SAT to IAD) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.2% on-time rate across 3,290 flights, with delays that do happen averaging 86.3 minutes. The corridor runs roughly 1,362 miles and is served by 7 carriers. Over the most recent 24 months, 16 of 1,307 flights were cancelled (1.2%) and 4 diverted (0.3%).
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 98% on-time, while Jan 2025 came in at just 78% - a 20-point swing worth factoring into travel timing.
On the multi-year calendar, SAT–IAD peaks in October at 95.3% on-time while May carries the heaviest traffic (~53 flights per month) ; the softest month is July at 85.2%, a 10.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SAT to IAD rank among US routes by traffic? ▼
How often are flights delayed from SAT to IAD? ▼
What is the cancellation rate for SAT to IAD? ▼
How far is the flight from SAT to IAD? ▼
When is the best time to fly from SAT to IAD? ▼
Airports on this route
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–IAD data
SAT–IAD runs 12.2 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 IAD airport profiles: delay causes and top routes differ even on the same corridor. SAT airport
- If your dates flex, October (95.3% on-time) beats July (85.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 91.2% 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.
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.