DAL400

For travellers

Departure · San Francisco (SFO)

Terminal T1 · Gate C9

Scheduled 07:10 · Departed 07:20 · +10 min

Board status: Departed

Airborne since 07:37 (ADS-B)

Arrival · Boston (BOS)

Terminal A · Gate A15 · Baggage belt 3

Scheduled 15:57 · Landed 15:36 · early

Board status: Arrived

Landed 17:14 (ADS-B)

Board data from bos, sfo, updated 152 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (callsign change)

Departure

San Francisco International Airport (SFO) — San Francisco, United States

Scheduled departure

2026-10-02 14:10 UTC

Departed

2026-10-02 14:37 UTC

Arrival

General Edward Lawrence Logan International Airport (BOS) — Boston, United States

Scheduled arrival

2026-10-02 19:57 UTC

Estimated arrival

2026-10-02 19:33 UTC

Also flies as

DL400

Codeshares

SK3586, VS1787

Distance flown

4463 km

Straight-line distance

4341 km

Approach distance

91 km

Aircraft

Registration

N550DN

Type

Airbus A321 Neo

Seats

194 total (132 Economy, 42 Delta Comfort+, 20 First)

CO2 (EMEP est., total)

96.6 t (483 kg/pax Economy, 632 kg/pax Business)

Altitude & speed

Max altitude

35,050 ft

Max ground speed

572 kt

Tracked

6h 37m · 4,442 km

Altitude (ft, max 35,050)

Ground speed (kt, max 572)

Altitude (ft, max 35,050)

Ground speed (kt, max 572)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

Delta Air Lines (DAL)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-02 14:37 UTC	DAL400	SFO → BOS San Francisco → Boston	N550DN	Airbus A321 Neo	Completed	4463 km
2026-10-01 15:45 UTC	DAL400	SFO → BOS San Francisco → Boston	N515DE	Airbus A321 Neo	Completed	4510 km
2026-09-30 14:29 UTC	DAL400	SFO → BOS San Francisco → Boston	N515DE	Airbus A321 Neo	Completed (landing confirmed by airport data)	4447 km
2026-09-29 14:28 UTC	DAL400	SFO → BOS San Francisco → Boston	N519DT	Airbus A321 Neo	Completed	4469 km
2026-09-28 15:11 UTC	DAL400	SFO → BOS San Francisco → Boston	N524DE	Airbus A321 Neo	Completed	4563 km
2026-09-26 14:26 UTC	DAL400	SFO → BOS San Francisco → Boston	N531DA	Airbus A321 Neo	Completed	4460 km
2026-09-25 14:26 UTC	DAL400	SFO → BOS San Francisco → Boston	N599DA	Airbus A321 Neo	Completed	4603 km
2026-09-24 14:43 UTC	DAL400	SFO → BOS San Francisco → Boston	N533DT	Airbus A321 Neo	Completed	4544 km
2026-09-23 14:22 UTC	DAL400	SFO → BOS San Francisco → Boston	N531DA	Airbus A321 Neo	Completed	4649 km
2026-09-22 14:21 UTC	DAL400	SFO → BOS San Francisco → Boston	N525DA	Airbus A321 Neo	Completed	4507 km
2026-09-21 14:21 UTC	DAL400	SFO → BOS San Francisco → Boston	N607DN	Airbus A321 Neo	Completed	4475 km
2026-09-20 14:51 UTC	DAL400	SFO → BOS San Francisco → Boston	N547DE	Airbus A321 Neo	Completed	4624 km
2026-09-19 14:22 UTC	DAL400	SFO → BOS San Francisco → Boston	N503DZ	Airbus A321 Neo	Completed	4757 km
2026-09-18 14:34 UTC	DAL400	SFO → BOS San Francisco → Boston	N610DN	Airbus A321 Neo	Completed	4782 km
2026-09-17 14:43 UTC	DAL400	SFO → BOS San Francisco → Boston	N527DE	Airbus A321 Neo	Completed	4781 km
2026-09-16 14:34 UTC	DAL400	SFO → BOS San Francisco → Boston	N526DE	Airbus A321 Neo	Completed	4710 km
2026-09-15 14:24 UTC	DAL400	SFO → BOS San Francisco → Boston	N538DN	Airbus A321 Neo	Completed	4742 km
2026-09-14 14:28 UTC	DAL400	SFO → BOS San Francisco → Boston	N529DT	Airbus A321 Neo	Completed	5067 km
2026-09-13 14:25 UTC	DAL400	SFO → BOS San Francisco → Boston	N547DE	Airbus A321 Neo	Completed	4780 km
2026-09-12 15:39 UTC	DAL400	SFO → BOS San Francisco → Boston	N526DE	Airbus A321 Neo	Completed	4721 km
2026-09-11 14:26 UTC	DAL400	SFO → BOS San Francisco → Boston	N520DE	Airbus A321 Neo	Completed	4773 km
2026-09-09 14:40 UTC	DAL400	SFO → BOS San Francisco → Boston	N507DZ	Airbus A321 Neo	Completed	4721 km
2026-09-07 14:23 UTC	DAL400	SFO → BOS San Francisco → Boston	N507DZ	Airbus A321 Neo	Completed	4764 km
2026-09-06 13:11 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	4784 km
2026-09-05 14:21 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	4659 km
2026-09-04 14:24 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	4509 km
2026-09-03 14:16 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	4752 km
2026-09-02 14:13 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	4654 km
2026-09-01 14:19 UTC	DAL400	SFO → BOS San Francisco → Boston	N517DN	Airbus A321 Neo	Completed	4673 km
2026-08-31 14:26 UTC	DAL400	SFO → BOS San Francisco → Boston	N548DN	Airbus A321 Neo	Completed	4913 km
2026-08-30 14:26 UTC	DAL400	SFO → BOS San Francisco → Boston	N548DN	Airbus A321 Neo	Completed	4648 km
2026-08-29 14:12 UTC	DAL400	SFO → BOS San Francisco → Boston	N548DN	Airbus A321 Neo	Completed	4796 km
2026-08-28 14:14 UTC	DAL400	SFO → BOS San Francisco → Boston	N516DA	Airbus A321 Neo	Completed	4736 km
2026-08-27 14:12 UTC	DAL400	SFO → BOS San Francisco → Boston	N522DA	Airbus A321 Neo	Completed	4777 km
2026-08-26 14:20 UTC	DAL400	SFO → BOS San Francisco → Boston	N522DA	Airbus A321 Neo	Completed	4783 km
2026-08-25 14:06 UTC	DAL400	SFO → BOS San Francisco → Boston	N522DA	Airbus A321 Neo	Completed	4735 km
2026-08-24 14:21 UTC	DAL400	SFO → BOS San Francisco → Boston	N525DA	Airbus A321 Neo	Completed	4739 km
2026-08-23 13:05 UTC	DAL400	SFO → BOS San Francisco → Boston	N543DE	Airbus A321 Neo	Completed	4786 km
2026-08-22 14:21 UTC	DAL400	SFO → BOS San Francisco → Boston	N543DE	Airbus A321 Neo	Completed	6729 km
2026-08-21 14:19 UTC	DAL400	SFO → BOS San Francisco → Boston	N513DA	Airbus A321 Neo	Completed	6102 km
2026-08-20 14:19 UTC	DAL400	SFO → BOS San Francisco → Boston	N543DE	Airbus A321 Neo	Completed	11222 km
2026-08-19 14:24 UTC	DAL400	SFO → BOS San Francisco → Boston	N543DE	Airbus A321 Neo	Completed	9735 km
2026-08-18 14:17 UTC	DAL400	SFO → BOS San Francisco → Boston	N543DE	Airbus A321 Neo	Completed	12758 km
2026-08-17 14:15 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	12626 km
2026-08-16 14:07 UTC	DAL400	SFO → BOS San Francisco → Boston	N544DN	Airbus A321 Neo	Completed	6143 km
2026-08-14 14:24 UTC	DAL400	SFO → BOS San Francisco → Boston	N533DT	Airbus A321 Neo	Completed	~9155 km est. (6294 km recorded)
2026-08-13 13:58 UTC	DAL400	SFO → BOS San Francisco → Boston	N504DZ	Airbus A321 Neo	Completed	~14781 km est. (6675 km recorded)
2026-08-12 14:21 UTC	DAL400	SFO → BOS San Francisco → Boston	N609DN	Airbus A321 Neo	Completed	6742 km
2026-08-11 13:49 UTC	DAL400	SFO → BOS San Francisco → Boston	N609DN	Airbus A321 Neo	Completed	6618 km
2026-08-10 20:09 UTC	DAL400	BOS → BOS Boston → Boston	N501DA	Airbus A321 Neo	Completed	~2 km est. (0 km recorded)