Route · SJU → RDU · 2020–2025 BTS data
San Juan to Raleigh/Durham
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SJU to RDU (San Juan to Raleigh/Durham) ranks #3961 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 71.9%
- On-time
- -7.1 pts
- vs US avg
- 82 min
- Delay when late
- 1,763
- Flights
- #3961 of 4927
- Corpus placement
Cancelled
1.3%
Best Month
Dec 2023 87%
Worst Month
Dec 2024 61%
Distance
1,433 mi
Carriers
5
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 51 | 7 | 0 | 0 | DL,F9,B6 |
| Nov 2025 | 41 | 8 | 1 | 0 | F9,B6 |
| Aug 2025 | 42 | 13 | 1 | 0 | F9,B6 |
| Jul 2025 | 48 | 8 | 0 | 0 | B6,F9 |
| Jun 2025 | 41 | 10 | 1 | 0 | B6,F9 |
| May 2025 | 38 | 9 | 0 | 0 | B6,F9 |
| Apr 2025 | 42 | 7 | 1 | 0 | F9,B6 |
| Mar 2025 | 44 | 9 | 1 | 0 | B6,F9 |
| Feb 2025 | 33 | 4 | 0 | 0 | B6,F9 |
| Jan 2025 | 43 | 12 | 1 | 1 | B6,F9 |
| Dec 2024 | 62 | 24 | 0 | 0 | B6,F9 |
| Nov 2024 | 34 | 5 | 0 | 0 | B6,F9 |
| Sep 2024 | 31 | 9 | 0 | 0 | B6,F9 |
| Aug 2024 | 43 | 6 | 1 | 1 | B6,F9 |
| Jul 2024 | 62 | 15 | 2 | 1 | B6,F9 |
| Jun 2024 | 60 | 16 | 1 | 0 | B6,F9 |
| May 2024 | 62 | 20 | 1 | 0 | B6,F9 |
| Apr 2024 | 51 | 14 | 1 | 0 | B6,F9 |
| Mar 2024 | 31 | 10 | 1 | 0 | B6 |
| Feb 2024 | 42 | 12 | 0 | 0 | B6,F9 |
| Jan 2024 | 69 | 14 | 1 | 0 | B6,F9 |
| Dec 2023 | 62 | 8 | 0 | 0 | B6,F9 |
| Nov 2023 | 51 | 14 | 0 | 0 | B6,F9 |
| Oct 2023 | 45 | 12 | 1 | 0 | B6,F9 |
SJU–RDU seasonal on-time pattern
Best: March (81.9%) · weakest: July (61.8%)
Strongest calendar month
March
81.9% on-time · ~35 flights/mo
Busiest calendar month
January
~56 flights/mo avg
Weakest calendar month
July
61.8% on-time · ~53 flights/mo
Cancellation Rate
1.3%
15 of 1,128 flights
Diversion Rate
0.3%
3 of 1,128 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.
SJU on-time profileRDU - Raleigh/Durham
Full on-time, delay-cause, and seasonal performance for Raleigh/Durham, NC.
RDU on-time profileCompare the two airports
See SJU and RDU side by side on delays, cancellations, and reliability.
Compare SJU vs RDUOrigin-hub reliability standing
Softer reliability from SJU
Among 21 routes leaving SJU, only 6 (including this one) clear below 75% on-time, while 1 stay ≥85% and 14 sit mid-band. Travelers comparing SJU options should weigh this 71.9% print against those peers · fleet on-time rank #4766 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SJU–RDU.
Routes with a similar on-time rate
What the Data Says About SJU to RDU
On-time performance on the SJU to RDU pairing (San Juan to Raleigh/Durham) trails a chunk of the network: 71.9% of 1,763 tracked flights arrived on schedule, with a 82.3-minute average delay on the ones that ran late. The route spans about 1,433 miles across 5 carriers. Cancellations over the trailing 24 months hit 1.3% (15 of 1,128 flights), with 0.3% diverted.
The monthly split is wide on this route: Dec 2023 posted the strongest performance at 87% on-time, while Dec 2024 came in at just 61% - a 26-point swing worth factoring into travel timing.
On the multi-year calendar, SJU–RDU peaks in March at 81.9% on-time while January carries the heaviest traffic (~56 flights per month) ; the softest month is July at 61.8%, a 20.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SJU to RDU rank among US routes by traffic? ▼
How often are flights delayed from SJU to RDU? ▼
What is the cancellation rate for SJU to RDU? ▼
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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 SJU–RDU data
SJU–RDU sits 7.1 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare SJU and RDU airport profiles: delay causes and top routes differ even on the same corridor. SJU airport
- If your dates flex, March (81.9% on-time) beats July (61.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 71.9% 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.