Route · SJU → PHL · 2020–2025 BTS data
San Juan to Philadelphia
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SJU to PHL (San Juan to Philadelphia) ranks #1250 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.2%
- On-time
- -4.8 pts
- vs US avg
- 95 min
- Delay when late
- 9,431
- Flights
- #1250 of 4927
- Corpus placement
Cancelled
1.8%
Best Month
Sep 2024 88%
Worst Month
May 2024 41%
Distance
1,576 mi
Carriers
12
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 164 | 69 | 6 | 0 | F9,NK,AA |
| Nov 2025 | 125 | 29 | 2 | 1 | F9,NK,AA |
| Oct 2025 | 93 | 22 | 0 | 0 | AA,F9,NK |
| Sep 2025 | 65 | 25 | 0 | 0 | NK,F9,AA |
| Aug 2025 | 129 | 47 | 3 | 0 | AA,F9,NK |
| Jul 2025 | 132 | 54 | 5 | 0 | AA,NK,F9 |
| Jun 2025 | 133 | 41 | 2 | 1 | AA,NK,F9 |
| May 2025 | 165 | 43 | 0 | 0 | AA,NK,F9 |
| Apr 2025 | 165 | 24 | 0 | 1 | F9,NK,AA |
| Mar 2025 | 157 | 32 | 4 | 3 | AA,F9,NK |
| Feb 2025 | 148 | 36 | 2 | 0 | AA,F9,NK |
| Jan 2025 | 164 | 50 | 5 | 2 | AA,F9,NK |
| Dec 2024 | 165 | 55 | 0 | 0 | AA,F9,NK |
| Nov 2024 | 102 | 17 | 1 | 0 | NK,F9,AA |
| Oct 2024 | 64 | 11 | 0 | 0 | NK,F9 |
| Sep 2024 | 58 | 7 | 0 | 0 | AA,F9,NK |
| Aug 2024 | 128 | 59 | 5 | 2 | AA,F9,NK |
| Jul 2024 | 136 | 75 | 4 | 0 | AA,F9,NK |
| Jun 2024 | 132 | 62 | 3 | 0 | AA,F9,NK |
| May 2024 | 129 | 76 | 4 | 2 | AA,F9,NK |
| Apr 2024 | 113 | 50 | 1 | 1 | AA,F9,NK |
| Mar 2024 | 124 | 63 | 2 | 2 | AA,F9,NK |
| Feb 2024 | 126 | 51 | 1 | 0 | AA,F9,NK |
| Jan 2024 | 161 | 61 | 4 | 3 | AA,F9,NK |
SJU–PHL seasonal on-time pattern
Best: October (81.8%) · weakest: June (67.1%)
Strongest calendar month
October
81.8% on-time · ~110 flights/mo
Busiest calendar month
May
~161 flights/mo avg
Weakest calendar month
June
67.1% on-time · ~148 flights/mo
Cancellation Rate
1.8%
54 of 3,078 flights
Diversion Rate
0.6%
18 of 3,078 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 profilePHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
PHL on-time profileCompare the two airports
See SJU and PHL side by side on delays, cancellations, and reliability.
Compare SJU vs PHLOrigin-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 74.2% print against those peers · fleet on-time rank #4587 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SJU–PHL.
Routes with a similar on-time rate
What the Data Says About SJU to PHL
On-time performance on the SJU to PHL pairing (San Juan to Philadelphia) trails a chunk of the network: 74.2% of 9,431 tracked flights arrived on schedule, with a 94.6-minute average delay on the ones that ran late. The route spans about 1,576 miles across 12 carriers. Cancellations over the trailing 24 months hit 1.8% (54 of 3,078 flights), with 0.6% diverted.
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 88% on-time, while May 2024 came in at just 41% - a 47-point swing worth factoring into travel timing.
On the multi-year calendar, SJU–PHL peaks in October at 81.8% on-time while May carries the heaviest traffic (~161 flights per month) ; the softest month is June at 67.1%, a 14.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SJU to PHL rank among US routes by traffic? ▼
How often are flights delayed from SJU to PHL? ▼
What is the cancellation rate for SJU to PHL? ▼
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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–PHL data
SJU–PHL sits 4.8 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare SJU and PHL airport profiles: delay causes and top routes differ even on the same corridor. SJU airport
- If your dates flex, October (81.8% on-time) beats June (67.1%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.2% 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.