Southwest Airlines

Is SWA1643 delayed?

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Service date: Sep 22, 2026 · Scheduled departure date (America/Chicago)

DepartedLast reported

18 min late

This update may be out of date. Check with your airline.

Update time unavailable

Departure

Nashville

BNA

Actual

13:19~~13:01~~

Sep 22

Arrival

St Louis

STL

Scheduled

18:49

Sep 22

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 22, 2026, 18:01 UTC
Estimated: Not available
Actual: Sep 22, 2026, 18:19 UTC

Arrival · UTC

Scheduled: Sep 22, 2026, 18:49 UTC
Estimated: Not available
Actual: Not available

Service date: Sep 22, 2026 · Scheduled departure date (UTC)

Arrived

58 min late

Official source · Updated Sep 22, 2026, 03:26 UTC

Departure

St Louis

STL

Actual

01:16~~00:13~~

Sep 22

Arrival

Boston

BOS

Actual

23:26~~22:28~~

Sep 21

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 22, 2026, 00:13 UTC
Estimated: Not available
Actual: Sep 22, 2026, 01:16 UTC

Arrival · UTC

Scheduled: Sep 22, 2026, 02:28 UTC
Estimated: Not available
Actual: Sep 22, 2026, 03:26 UTC

BNASTL

STLBOS

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

Mon, Sep 21, 2026
STL → BOS
58 min late
Sun, Sep 20, 2026
BNA → STL
17 min early
Fri, Sep 18, 2026
STL → BOS
77 min late
Thu, Sep 17, 2026
STL → BOS
50 min late
Wed, Sep 16, 2026
BNA → STL
12 min early

Flight history and details

Aug 23, 2026 — Sep 22, 2026

Observed arrivals: 11
Arrivals over 15 minutes late: 4
Observed cancellations: 0
Observed occurrences: 12

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

SWA1643 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 22, 2026Arrived	St Louis	Boston	Sep 22, 2026, 03:26 UTC	58
Sep 20, 2026Arrived	Nashville	St Louis	Sep 20, 2026, 13:37 UTC	-17
Sep 19, 2026Arrived	St Louis	Boston	Sep 19, 2026, 03:45 UTC	77
Sep 18, 2026Arrived	St Louis	Boston	Sep 18, 2026, 03:18 UTC	50
Sep 16, 2026Arrived	Nashville	St Louis	Sep 16, 2026, 18:36 UTC	-12
Sep 15, 2026Arrived	St Louis	Boston	Sep 15, 2026, 02:42 UTC	9
Sep 12, 2026Arrived	St Louis	Boston	Sep 12, 2026, 02:21 UTC	-6
Sep 11, 2026Arrived	St Louis	Boston	Sep 11, 2026, 03:10 UTC	-2
Sep 8, 2026Arrived	Nashville	St Louis	Sep 8, 2026, 18:41 UTC	-8
Sep 8, 2026Arrived	St Louis	Boston	Sep 8, 2026, 02:54 UTC	16
Sep 5, 2026Arrived	St Louis	Boston	Sep 5, 2026, 02:30 UTC	2