Route · SJU → IAD · 2020–2025 BTS data
San Juan to Washington
The SJU–IAD corridor (San Juan, PR → Washington, DC) runs ahead of the national average, served by 3 carriers across roughly 1,571 miles.
Data updated 2026-06-13
- 86.4%
- On-time
- +7.4 pts
- vs US avg
- 67 min
- Delay when late
- 2,236
- Flights
Cancelled
0.6%
Best Month
Feb 2025 91%
Worst Month
Jul 2025 79%
Distance
1,571 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 77 | 13 | 0 | 0 | F9,UA |
| Nov 2025 | 73 | 9 | 0 | 0 | UA,F9 |
| Oct 2025 | 43 | 7 | 0 | 0 | UA,F9 |
| Aug 2025 | 50 | 14 | 0 | 0 | F9,UA |
| Jul 2025 | 53 | 11 | 0 | 1 | UA,F9 |
| Jun 2025 | 51 | 8 | 0 | 1 | UA,F9 |
| May 2025 | 38 | 6 | 0 | 0 | UA,F9 |
| Apr 2025 | 38 | 2 | 0 | 0 | UA |
| Mar 2025 | 61 | 11 | 1 | 0 | UA |
| Feb 2025 | 56 | 5 | 0 | 0 | UA |
| Jan 2025 | 62 | 12 | 1 | 0 | UA |
| Dec 2024 | 43 | 9 | 0 | 0 | UA |
| Nov 2024 | 30 | 3 | 0 | 0 | UA |
| Oct 2024 | 31 | 4 | 0 | 0 | UA |
| Aug 2024 | 37 | 9 | 0 | 1 | UA |
| Jul 2024 | 40 | 7 | 0 | 0 | UA |
| Jun 2024 | 39 | 8 | 1 | 0 | UA |
| May 2024 | 34 | 4 | 1 | 0 | UA |
| Apr 2024 | 38 | 5 | 0 | 0 | UA |
| Mar 2024 | 39 | 14 | 0 | 0 | UA |
| Feb 2024 | 33 | 5 | 0 | 0 | UA |
| Jan 2024 | 43 | 7 | 3 | 1 | UA |
| Dec 2023 | 48 | 6 | 0 | 0 | UA |
| Nov 2023 | 30 | 5 | 0 | 0 | UA |
Cancellation Rate
0.6%
7 of 1,087 flights
Diversion Rate
0.4%
4 of 1,087 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SJU - San Juan
Full on-time, delay-cause, and seasonal performance for San Juan, PR.
Origin airport →IAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Destination airport →Compare the two airports
See SJU and IAD side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SJU–IAD.
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What the Data Says About SJU to IAD
San Juan to Washington (SJU to IAD) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.4% on-time rate across 2,236 flights, with delays that do happen averaging 66.8 minutes. The corridor runs roughly 1,571 miles and is served by 3 carriers. Over the most recent 24 months, 7 of 1,087 flights were cancelled (0.6%) and 4 diverted (0.4%).
Monthly performance varies moderately here: Feb 2025 was the strongest month at 91% on-time versus Jul 2025 at 79%, a 12-point difference.
Frequently Asked Questions
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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.