PlainFlights

SJU vs JFK - Airport Comparison

Select two airports to compare on-time performance, delays, cancellations, and top routes using U.S. Department of Transportation Bureau of Transportation Statistics (BTS) data (2020–2025) across all 50 states. See our methodology for how metrics are computed.

Airport A
SJU

San Juan, PR

San Juan, Puerto Rico

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Airport B
JFK

New York, NY

New York, New York

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Key Performance Metrics

BTS on-time performance data, 2020–2025 cumulative.

Metric SJU JFK
On-Time Rate (higher is better) 76.1% 79.4%
Avg Delay (lower is better) 78.5 min 82.5 min
Delay Rate (lower is better) 23.9% 20.6%
Cancellation Rate (lower is better) 0.85% 1.33%
Total Flights 366,579 1,274,816
Delayed Flights 87,503 263,153
Cancelled Flights 3,126 16,932
Top Delay Cause Late Aircraft Carrier

✓ / ▲ indicates the more favorable value. Data: BTS On-Time Performance, 2020–2025.

Delay Cause Breakdown

SJU - San Juan, PR

Late Aircraft 45.2%
Carrier 38.4%
NAS 15.3%
Weather 0.9%
Security 0.2%

JFK - New York, NY

Carrier 43.4%
Late Aircraft 28.3%
NAS 24.4%
Weather 3.6%
Security 0.2%

Top Routes

Top routes from SJU

Route Flights On-Time
MCO → SJU
San Juan
35,205 74.1%
SJU → MCO
Orlando
35,197 77%
SJU → JFK
New York
19,165 77.9%
JFK → SJU
San Juan
19,069 72.3%
MIA → SJU
San Juan
14,957 78.3%
SJU → MIA
Miami
14,957 80.5%

Top routes from JFK

Route Flights On-Time
JFK → LAX
Los Angeles
53,628 81.3%
LAX → JFK
New York
53,619 81.8%
JFK → SFO
San Francisco
35,481 81.9%
SFO → JFK
New York
35,481 83.2%
JFK → BOS
Boston
30,732 77.6%
BOS → JFK
New York
30,700 80.3%

Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) On-time rates exclude cancelled and diverted flights. PlainFlights is not affiliated with BTS or the DOT

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This tool queries live on-time, delay, and cancellation figures for the two selected airports from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.