DL1721 Delta Air Lines - Flight Status
Below, you can find details about Delta Air Lines flight DL1721, which currently operates between the airports of San Juan - Luis Munoz Marin International Airport (Airport Code SJU) and Boston - Boston Logan International Airport (Airport Code BOS).
This flight data pertains specifically to the flight's details for Monday, December 22, 2025.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL1721
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL1721
DL1721 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions. Flight Status
DL1721 Delta Air Lines from San Juan
Landed - On-time
Flight Status for Monday December 22, 2025
This flight is also scheduled for Today (December 23, 2025). See it here
This flight is also scheduled for Tomorrow (December 24, 2025). See it here
Landed - On-time
Flight Status for Monday December 22, 2025
Airline information
Delta Air Lines
Equipment: Airbus A321neo
Departure
San Juan (SJU)
December 22, 2025
Luis Munoz Marin International Airport
Departed at:
02:04 pm
Terminal:
B
Gate:
B10
Scheduled Departure Time: 02:08 pm
Arrival
Boston (BOS)
December 22, 2025
Boston Logan International Airport
Arrived at:
05:23 pm
Terminal:
A
Gate:
A21
Scheduled Arrival Time: 05:36 pm
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.boston-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- KL6985 - KLM Royal Dutch Airlines
Additional Information
Which is the frequency of flight DL1721?
The flight DL1721 is scheduled to flight on Monday, Tuesday, Saturday, Sunday on a weekly basis.
Which is the distance of flight DL1721?
The distance between the two airports is 1680 miles.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in San Juan: 2025-12-23 07:31:06
Current Time in Boston: 2025-12-23 06:31:06
The flight DL1721 is scheduled to flight on Monday, Tuesday, Saturday, Sunday on a weekly basis.
Which is the distance of flight DL1721?
The distance between the two airports is 1680 miles.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in San Juan: 2025-12-23 07:31:06
Current Time in Boston: 2025-12-23 06:31:06
Alternative Flights
The following airlines serves the same route between San Juan and Boston:
JetBlue
- Flight Number: B61462. (On Time performance: 58 - Average Delay: 39 minutes)
- Flight Number: B6162. (On Time performance: 87 - Average Delay: 9 minutes)
- Flight Number: B6262.
- Flight Number: B6808. (On Time performance: 67 - Average Delay: 66 minutes)
- Flight Number: B6862. (On Time performance: 65 - Average Delay: 26 minutes)
- Flight Number: B6908. (On Time performance: 57 - Average Delay: 15 minutes)
Delta Air Lines
- Flight Number: DL1780. (On Time performance: 84 - Average Delay: 11 minutes)
- Flight Number: DL1851.
Spirit Airlines
- Flight Number: NK309.
JetBlue
- Flight Number: B61462. (On Time performance: 58 - Average Delay: 39 minutes)
- Flight Number: B6162. (On Time performance: 87 - Average Delay: 9 minutes)
- Flight Number: B6262.
- Flight Number: B6808. (On Time performance: 67 - Average Delay: 66 minutes)
- Flight Number: B6862. (On Time performance: 65 - Average Delay: 26 minutes)
- Flight Number: B6908. (On Time performance: 57 - Average Delay: 15 minutes)
Delta Air Lines
- Flight Number: DL1780. (On Time performance: 84 - Average Delay: 11 minutes)
- Flight Number: DL1851.
Spirit Airlines
- Flight Number: NK309.
Punctuality and delays
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights DL1721
Date
Departure
Arrival
Duration
Aircraft
Status
Monday
22 December
22 December
02:04 pm
San Juan (SJU)
San Juan (SJU)
05:23 pm
Boston (BOS)
Boston (BOS)
04h 19min
Airbus A321neo
Airbus A321neo
Landed - On-time
Sunday
21 December
21 December
01:54 pm
San Juan (SJU)
San Juan (SJU)
04:54 pm
Boston (BOS)
Boston (BOS)
04h 00min
Airbus A321neo
Airbus A321neo
Landed - On-time
Saturday
20 December
20 December
02:30 pm
San Juan (SJU)
San Juan (SJU)
05:39 pm
Boston (BOS)
Boston (BOS)
04h 09min
Airbus A321neo
Airbus A321neo
Landed - On-time