| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 05 | SJU | BOS | 08:30 | 19:53 |
Unknown
|
Track > |
| Jan 04 | SJU | BOS | 17:20 | 20:14 |
Landed
|
Track > |
| Jan 03 | SJU | BOS | 16:34 | 20:00 |
Cancelled
|
Track > |
| Claim > | ||||||
| Jan 02 | SJU | BOS | 16:57 | 19:39 |
Landed
|
Track > |
| Jan 01 | SJU | BOS | 17:16 | 19:55 |
Landed
|
Track > |
| Dec 31 | SJU | BOS | 16:47 | 19:28 |
Landed
|
Track > |
| Dec 30 | SJU | BOS | 17:35 | 20:05 |
Landed
|
Track > |
| Dec 29 | SJU | BOS | 16:46 | 19:28 |
Landed
|
Track > |
| Dec 28 | SJU | BOS | 16:41 | 19:26 |
Landed
|
Track > |
| Dec 27 | SJU | BOS | 19:34 | 23:03 |
Delayed
|
Track > |
Delta Air Lines Flight DL1851 connects San Juan, Puerto Rico to Boston, United States, taking off from San Juan Luis Munoz Marin International Airport SJU and landing at Boston Logan International Airport BOS.
How long is the DL1851 flight from San Juan to Boston?
The average flight time from San Juan to Boston is 3 hours and 47 minutes. The flight distance is 2702 km / 1679 miles and the average flight speed is 695 km/h / 432 mph.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL1851 San Juan to Boston?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL1851 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight DL1851 arriving at?
Flight DL1851 arrives at Boston Logan International Airport (BOS) Terminal A.
When was the latest DL1851 flight?
The latest flight took off on Tuesday, January 6th, 2026 with the flight status being Unknown on 19:53.
How else can the flight DL1851 be referenced as?
This Delta Air Lines flight can also be referenced as DAL1851, DL 1851, DAL 1851.
How often is flight DL1851 delayed?
On average, 30% of all DL1851 flights are delayed. The average delay is 67 minutes.
Can I get compensation for my delayed or cancelled DL1851 flight or baggage issues?
If your DL1851 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our DL1851 Flight Tracker above for more details.
Other flights departing from San Juan SJU: F92267, DL1503, 9K2811, TJ906
Other flights arriving at Boston BOS: B61488, S42281, UA1346, AA3243
All flights connecting San Juan SJU to Boston BOS.
