PlainFlights

Route · BDL → SJU · 2020–2025 BTS data

Hartford to San Juan

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BDL to SJU (Hartford to San Juan) ranks #2741 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

58.6%
On-time
-20.4 pts
vs US avg
87 min
Delay when late
4,375
Flights
#2741 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Apr 2025 82%

Worst Month

Jul 2024 51%

Distance

1,666 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 97 31 2 0 B6,F9
Nov 2025 64 18 0 0 F9,B6
Oct 2025 53 25 0 1 B6
Sep 2025 54 19 0 0 F9,B6
Aug 2025 91 29 0 5 F9,B6
Jul 2025 88 27 2 2 B6,F9
Jun 2025 83 17 0 0 B6,F9
May 2025 85 19 0 0 B6,F9
Apr 2025 79 14 0 1 F9,B6
Mar 2025 82 39 0 0 B6,F9
Feb 2025 84 19 1 2 B6,F9
Jan 2025 96 44 1 2 B6,F9
Dec 2024 100 36 1 0 B6,F9
Nov 2024 76 29 0 0 B6,F9
Oct 2024 54 11 1 0 F9,B6
Sep 2024 57 12 0 0 B6,F9
Aug 2024 93 42 4 0 B6,F9
Jul 2024 93 46 0 0 B6,F9
Jun 2024 90 44 2 0 B6,F9
May 2024 93 42 2 0 B6,F9
Apr 2024 90 28 2 0 B6,F9
Mar 2024 93 39 3 2 B6,F9
Feb 2024 73 29 1 0 B6,F9
Jan 2024 88 42 3 0 B6,F9,NK

BDL–SJU seasonal on-time pattern

Best: February (70.1%) · weakest: June (47.6%)

45%50%55%60%65%70%75% JanFebMarAprMayJunJulAugSepOctNovDec 61%

Strongest calendar month

February

70.1% on-time · ~66 flights/mo

Busiest calendar month

March

~86 flights/mo avg

Weakest calendar month

June

47.6% on-time · ~72 flights/mo

Cancellation Rate

1.3%

25 of 1,956 flights

Diversion Rate

0.8%

15 of 1,956 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

BDL - Hartford

Full on-time, delay-cause, and seasonal performance for Hartford, CT.

BDL on-time profile

SJU - San Juan

Full on-time, delay-cause, and seasonal performance for San Juan, PR.

SJU on-time profile

Compare the two airports

See BDL and SJU side by side on delays, cancellations, and reliability.

Compare BDL vs SJU

Origin-hub reliability standing

Softer reliability from BDL

Among 22 routes leaving BDL, only 2 (including this one) clear below 75% on-time, while 7 stay ≥85% and 13 sit mid-band. Travelers comparing BDL options should weigh this 58.6% print against those peers · fleet on-time rank #4925 of 4927.

What the Data Says About BDL to SJU

Hartford to San Juan (BDL to SJU) sits among the less reliable pairings in the BTS dataset, on-time only 58.6% of the time across 4,375 flights, with a 86.5-minute average delay when service runs late. Carriers on this 1,666-mile route (4 total) show a 1.3% cancellation rate and 0.8% diversion rate over the last 24 months (25 of 1,956 flights cancelled).

The monthly split is wide on this route: Apr 2025 posted the strongest performance at 82% on-time, while Jul 2024 came in at just 51% - a 32-point swing worth factoring into travel timing.

On the multi-year calendar, BDL–SJU peaks in February at 70.1% on-time while March carries the heaviest traffic (~86 flights per month) ; the softest month is June at 47.6%, a 22.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BDL to SJU rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BDL to SJU ranks #2741 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from BDL to SJU? ▼
Flights from Hartford to San Juan have a 58.6% on-time rate based on 4,375 flights. The average delay is 86.5 minutes. The best recent month was Apr 2025 with 82% on-time.
What is the cancellation rate for BDL to SJU? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (25 of 1,956 flights) and 0.8% were diverted.
How far is the flight from BDL to SJU? ▼
The flight distance from Hartford (BDL) to San Juan (SJU) is approximately 1,666 miles. This route is served by 4 carriers.
When is the best time to fly from BDL to SJU? ▼
The best recent month for on-time performance was Apr 2025 (82% on-time). The worst was Jul 2024 (51% on-time). Consider booking during months with historically better performance.

Airports on this route

BDL Airport

Hartford
SJU Airport

San Juan
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 BDL–SJU data

BDL–SJU sits 20.4 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.

  • Compare BDL and SJU airport profiles: delay causes and top routes differ even on the same corridor. BDL airport
  • If your dates flex, February (70.1% on-time) beats June (47.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 58.6% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.