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Route · SJU → BDL · 2020–2025 BTS data

San Juan to Hartford

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SJU to BDL (San Juan to Hartford) ranks #2742 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

62.7%
On-time
-16.3 pts
vs US avg
82 min
Delay when late
4,375
Flights
#2742 of 4927
Corpus placement

Cancelled

1.4%

Best Month

Jun 2025 89%

Worst Month

Jan 2024 38%

Distance

1,666 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 96 19 3 1 B6,F9
Nov 2025 64 17 0 0 F9,B6
Oct 2025 53 26 0 0 B6
Sep 2025 54 21 0 0 F9,B6
Aug 2025 91 32 0 0 F9,B6
Jul 2025 88 28 2 0 B6,F9
Jun 2025 83 9 0 0 B6,F9
May 2025 85 17 0 2 B6,F9
Apr 2025 79 16 0 0 F9,B6
Mar 2025 82 17 0 1 B6,F9
Feb 2025 84 17 0 0 B6,F9
Jan 2025 96 32 1 0 B6,F9
Dec 2024 101 33 0 0 B6,F9
Nov 2024 76 27 0 0 B6,F9
Oct 2024 54 12 1 0 F9,B6
Sep 2024 57 15 0 0 B6,F9
Aug 2024 93 42 4 0 B6,F9
Jul 2024 93 43 1 0 B6,F9
Jun 2024 90 45 2 0 B6,F9
May 2024 93 40 2 0 B6,F9
Apr 2024 90 24 3 1 B6,F9
Mar 2024 93 43 5 1 B6,F9
Feb 2024 73 42 0 0 B6,F9
Jan 2024 88 55 3 2 B6,F9,NK

SJU–BDL seasonal on-time pattern

Best: November (69.7%) · weakest: January (57.0%)

55%60%65%70%75% JanFebMarAprMayJunJulAugSepOctNovDec 65.2%

Strongest calendar month

November

69.7% on-time · ~67 flights/mo

Busiest calendar month

March

~86 flights/mo avg

Weakest calendar month

January

57.0% on-time · ~74 flights/mo

Cancellation Rate

1.4%

27 of 1,956 flights

Diversion Rate

0.4%

8 of 1,956 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 profile

BDL - Hartford

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

BDL on-time profile

Compare the two airports

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

Compare SJU vs BDL

Origin-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 62.7% print against those peers · fleet on-time rank #4910 of 4927.

What the Data Says About SJU to BDL

San Juan to Hartford (SJU to BDL) sits among the less reliable pairings in the BTS dataset, on-time only 62.7% of the time across 4,375 flights, with a 81.8-minute average delay when service runs late. Carriers on this 1,666-mile route (4 total) show a 1.4% cancellation rate and 0.4% diversion rate over the last 24 months (27 of 1,956 flights cancelled).

The monthly split is wide on this route: Jun 2025 posted the strongest performance at 89% on-time, while Jan 2024 came in at just 38% - a 52-point swing worth factoring into travel timing.

On the multi-year calendar, SJU–BDL peaks in November at 69.7% on-time while March carries the heaviest traffic (~86 flights per month) ; the softest month is January at 57.0%, a 12.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SJU to BDL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SJU to BDL ranks #2742 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 SJU to BDL? ▼
Flights from San Juan to Hartford have a 62.7% on-time rate based on 4,375 flights. The average delay is 81.8 minutes. The best recent month was Jun 2025 with 89% on-time.
What is the cancellation rate for SJU to BDL? ▼
Over the last 24 months, 1.4% of flights on this route were cancelled (27 of 1,956 flights) and 0.4% were diverted.
How far is the flight from SJU to BDL? ▼
The flight distance from San Juan (SJU) to Hartford (BDL) is approximately 1,666 miles. This route is served by 4 carriers.
When is the best time to fly from SJU to BDL? ▼
The best recent month for on-time performance was Jun 2025 (89% on-time). The worst was Jan 2024 (38% on-time). Consider booking during months with historically better performance.

Airports on this route

SJU Airport

San Juan
BDL Airport

Hartford
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–BDL data

SJU–BDL sits 16.3 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.

  • Compare SJU and BDL airport profiles: delay causes and top routes differ even on the same corridor. SJU airport
  • If your dates flex, November (69.7% on-time) beats January (57.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 62.7% 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.