How long is the KL5550 flight?

The timetable allows 4 h 24 min. San Antonio to Boston is 2,835 km (1,762 mi).

Which terminal does KL5550 use?

It usually leaves from Terminal A at San Antonio International Airport (SAT) and arrives at Terminal A at Boston Logan International Airport (BOS). Check the flight card above for today's terminal and gate.

What other flight numbers does KL5550 have?

Also listed as KLM5550 (KLM's ICAO code) and KL 5550.

KL5550 Flight Status KLM: San Antonio to Boston (KLM5550)

KLM KL 5550

Delayed

SAT San Antonio

Scheduled: 13:50
Actual: 16:58

Terminal: A | Gate: 3

Departure: Sat, Nov 7, 2026 · local time CST

San Antonio International Airport (SAT)

All SAT Departures >

BOS Boston

Scheduled: 19:14
Estimated: 21:29
Delay: 2h15'

Terminal: A | Gate: A13

Arrival: Sat, Nov 7, 2026 · local time EST

Boston Logan International Airport (BOS)

All BOS Arrivals >

Departed 37h 14m ago · was due to land 33h 43m ago, awaiting update 100%

SAT 16:58 BOS 21:29

2,835 km (1,762 mi) flown · 0 km (0 mi) to go

Estimated position based on departure and arrival times, not live tracking. Times are local at each airport.

Add to calendar

Distance: 2835 km / 1762 miles · Scheduled Duration: 04:24

KL 5550 Flight Status & Schedule KLM San Antonio to Boston

Date	From	To	Departure	Arrival	Status	Details
Nov 07	SAT	BOS	16:58	21:29	Delayed	Track >
Nov 05	SAT	BOS	14:16	19:24	Landed	Track >
Nov 03	SAT	BOS	13:59	18:46	Landed	Track >

KLM flight KL 5550 links San Antonio and Boston, 2,835 km (1,762 mi) apart, and flies three times a week: Tuesday, Thursday and Saturday. The timetable allows 4 h 24 min; there is not enough recent history yet to say how long it usually takes. On Saturday it left at 16:58, 3 h 8 min late, and is due in Boston at 21:29, 2 h 15 min late.

< All San Antonio SAT Departures All Boston BOS Arrivals >

About KL 5550

Route: San Antonio International Airport SAT to Boston Logan International Airport BOS
Distance: 2,835 km (1,762 mi)
Scheduled flight time: 4 h 24 min
Flies: Tue, Thu, Sat
Usually departs from: Terminal A

KL 5550 FAQ

How long is the KL5550 flight?: The timetable allows 4 h 24 min. San Antonio to Boston is 2,835 km (1,762 mi).
Which days does KL5550 fly?: Three times a week: Tuesday, Thursday and Saturday, based on the schedule of the last 7 days.
Which terminal does KL5550 use?: It usually leaves from Terminal A at San Antonio International Airport (SAT) and arrives at Terminal A at Boston Logan International Airport (BOS). Check the flight card above for today's terminal and gate.
What other flight numbers does KL5550 have?: Also listed as KLM5550 (KLM's ICAO code) and KL 5550.

KL5550 and San Antonio SAT to Boston BOS Flights

Flight KL5550 is a code-share KLM flight of the Delta Air Lines operated DL816.

Other flights departing from San Antonio SAT: DL816, WN3021

Other flights arriving at Boston BOS: B6988, B6932, DL816

All flights connecting San Antonio SAT to Boston BOS.