Route · DCA → SJU · 2020–2025 BTS data
Washington to San Juan
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DCA to SJU (Washington to San Juan) ranks #4044 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 77%
- On-time
- -2 pts
- vs US avg
- 83 min
- Delay when late
- 1,655
- Flights
- #4044 of 4927
- Corpus placement
Cancelled
0.5%
Best Month
N/A
Worst Month
N/A
Distance
1,554 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 8 | 0 | 0 | B6 |
| Nov 2025 | 30 | 5 | 0 | 0 | B6 |
| Oct 2025 | 31 | 10 | 0 | 1 | B6 |
| Sep 2025 | 30 | 8 | 0 | 0 | B6 |
| Aug 2025 | 31 | 6 | 0 | 0 | B6 |
| Jul 2025 | 31 | 6 | 0 | 0 | B6 |
| Jun 2025 | 30 | 6 | 0 | 0 | B6 |
| May 2025 | 31 | 1 | 0 | 0 | B6 |
| Apr 2025 | 30 | 5 | 0 | 0 | B6 |
| Mar 2025 | 31 | 6 | 0 | 0 | B6 |
| Jan 2025 | 31 | 8 | 3 | 0 | B6 |
| Dec 2024 | 31 | 10 | 0 | 0 | B6 |
| Nov 2024 | 30 | 5 | 0 | 0 | B6 |
| Oct 2024 | 31 | 4 | 0 | 0 | B6 |
| Sep 2024 | 30 | 7 | 0 | 0 | B6 |
| Aug 2024 | 31 | 10 | 0 | 0 | B6 |
| Jul 2024 | 31 | 12 | 0 | 0 | B6 |
| Jun 2024 | 30 | 6 | 0 | 1 | B6 |
| May 2024 | 31 | 2 | 0 | 0 | B6 |
| Apr 2024 | 30 | 2 | 0 | 0 | B6 |
| Mar 2024 | 31 | 10 | 1 | 0 | B6 |
| Jan 2024 | 31 | 9 | 0 | 0 | B6 |
| Dec 2023 | 31 | 8 | 0 | 0 | B6 |
| Nov 2023 | 30 | 2 | 0 | 0 | B6 |
DCA–SJU seasonal on-time pattern
Best: May (85.5%) · weakest: December (71.0%)
Strongest calendar month
May
85.5% on-time · ~31 flights/mo
Busiest calendar month
January
~31 flights/mo avg
Weakest calendar month
December
71.0% on-time · ~31 flights/mo
Cancellation Rate
0.5%
4 of 735 flights
Diversion Rate
0.3%
2 of 735 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
DCA on-time profileSJU - San Juan
Full on-time, delay-cause, and seasonal performance for San Juan, PR.
SJU on-time profileCompare the two airports
See DCA and SJU side by side on delays, cancellations, and reliability.
Compare DCA vs SJUOrigin-hub reliability standing
Mid-pack among DCA departures
From DCA, this corridor sits with 77 other 75–85% on-time routes out of 91 tracked departures, not the hub's reliability leaders (4 at ≥85%) and not the softest ( 10 below 75%). Destination: San Juan · fleet on-time rank #4083 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DCA–SJU.
Routes with a similar on-time rate
What the Data Says About DCA to SJU
The Washington to San Juan corridor (DCA to SJU) posts a 77% on-time rate on the lower edge of the average band, based on 1,655 tracked flights. Late flights run 83.4 minutes behind on average. 1 carrier cover the 1,554-mile route; over the last 24 months, 4 of 735 flights were cancelled (0.5%) and 0.3% diverted.
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.
On the multi-year calendar, DCA–SJU peaks in May at 85.5% on-time while January carries the heaviest traffic (~31 flights per month) ; the softest month is December at 71.0%, a 14.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DCA to SJU rank among US routes by traffic? ▼
How often are flights delayed from DCA to SJU? ▼
What is the cancellation rate for DCA to SJU? ▼
How far is the flight from DCA to SJU? ▼
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 DCA–SJU data
DCA–SJU is mid-pack at 77% on-time; month and carrier mix move more than the corridor headline.
- Compare DCA and SJU airport profiles: delay causes and top routes differ even on the same corridor. DCA airport
- If your dates flex, May (85.5% on-time) beats December (71.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 77% 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.