Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

SWA4021

Operated by Southwest Airlines

Live map

Live map filtered to SWA4021. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BWI KBWI VFR

Baltimore/Washington International Thurgood Marshall Airport

Baltimore, US

Local time
21:36 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
146 ft
Coordinates
39.1754, -76.6683

cloud Weather

Wind
20° / 4 kt
Visibility
10 SM
Ceiling
SCT 25,000 ft
Temp / Dew
26°C / 18°C
Altimeter
30.05 inHg

Obs: 2026-08-29T00:54:00.000Z

Raw METAR / TAF 
METAR KBWI 290054Z 02004KT 10SM SCT250 26/18 A3005 RMK AO2 SLP176 T02560178 $

TAF KBWI 282332Z 2900/3006 06005KT P6SM FEW060 BKN250 FM290200 02004KT P6SM SCT250 FM291600 06005KT P6SM FEW040 SCT250 FM292000 14005KT P6SM SCT250

flight Live Traffic

flight_takeoff 97 Departures
flight_land 57 Arrivals

Arrival

BOS KBOS

Boston Logan International Airport

Boston, US

Local time
21:36 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

flight Live Traffic

flight_takeoff 267 Departures
flight_land 289 Arrivals

schedule Forecast (TAF) 

TAF KBOS 282320Z 2900/3006 28008KT P6SM FEW050 FM290400 34010G18KT P6SM FEW050 FM291300 02006KT P6SM SKC FM291600 12010KT P6SM SKC FM300000 19006KT P6SM SKC

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 AC078B BWI → BOS Jul 26, 22:40 UTCJul 26, 22:45 UTC5m - -
2026-07-25 ABB222 BWI → BOS Jul 25, 14:35 UTCJul 25, 16:25 UTC1h 50m - -
2026-07-24 AAB0BA BWI → BOS Jul 24, 21:24 UTCJul 25, 00:20 UTC2h 56m +24m +6m
2026-07-24 AAB0BA BWI → BOS Jul 24, 21:25 UTCJul 25, 00:35 UTC3h 10m - -
2026-07-23 A2396E BWI → BOS Jul 23, 21:30 UTCJul 24, 00:40 UTC3h 10m - -
2026-07-22 ABFD66 BWI → BOS Jul 22, 12:15 UTCJul 22, 14:10 UTC1h 55m - -
2026-07-22 ABFD66 BWI → BOS Jul 22, 12:11 UTCJul 22, 14:12 UTC2h 1m +6m +9m
2026-07-21 AC1A44 BWI → BOS Jul 21, 12:29 UTCJul 21, 14:34 UTC2h 5m +24m +20m
2026-07-21 AC1A44 BWI → BOS Jul 21, 12:30 UTCJul 21, 14:40 UTC2h 10m - -
2026-07-20 ACDA2C BWI → BOS Jul 20, 21:15 UTCJul 21, 00:30 UTC3h 15m - -
2026-07-19 AC6266 BWI → BOS Jul 19, 22:55 UTCJul 20, 00:40 UTC1h 45m - -
2026-07-19 AC6266 BWI → BOS Jul 19, 22:51 UTCJul 20, 00:39 UTC1h 48m +61m +9m
2026-07-18 AC006D BWI → BOS Jul 18, 14:30 UTCJul 18, 16:20 UTC1h 50m - -
2026-07-17 AAB0BA BWI → BOS Jul 17, 21:25 UTCJul 18, 00:50 UTC3h 25m - -
2026-07-17 AAB0BA BWI → BOS Jul 17, 21:23 UTCJul 18, 00:31 UTC3h 8m +23m +4m
2026-07-16 A5E0D3 BWI → BOS Jul 16, 23:44 UTCJul 17, 03:05 UTC3h 20m - -
2026-07-15 ABFCDA - Jul 15, 12:25 UTCJul 15, 14:20 UTC1h 55m - -
2026-07-14 A146CE - Jul 14, 12:15 UTCJul 14, 13:30 UTC1h 15m - -
2026-07-14 A146CE DEN → HOU Jul 14, 12:13 UTCJul 14, 14:05 UTC1h 52m +8m +7m
2026-07-13 A1E302 DAL → LGA Jul 13, 21:25 UTCJul 14, 00:35 UTC3h 10m - -
2026-07-12 AC247A - Jul 12, 22:05 UTCJul 13, 00:01 UTC1h 55m - -
2026-07-11 AC75DC - Jul 11, 14:30 UTCJul 11, 16:20 UTC1h 50m - -
2026-07-11 AC75DC FLL → BNA Jul 11, 14:25 UTCJul 11, 16:11 UTC1h 46m +10m +7m
2026-07-10 ACA788 DAL → LGA Jul 10, 22:20 UTCJul 11, 01:40 UTC3h 20m - -
2026-07-10 ACA788 DAL → LGA Jul 10, 22:20 UTCJul 11, 01:29 UTC3h 9m +80m +80m
2026-07-09 ABB5E2 - Jul 9, 21:35 UTCJul 10, 00:45 UTC3h 10m - -
2026-07-08 AC1789 DEN → HOU Jul 8, 12:15 UTCJul 8, 14:06 UTC1h 51m +10m +10m
2026-07-08 AC1789 - Jul 8, 12:15 UTCJul 8, 14:15 UTC2h 0m - -
2026-07-07 ABDC9B DEN → HOU Jul 7, 12:19 UTCJul 7, 14:12 UTC1h 53m +14m +11m
2026-07-07 ABDC9B - Jul 7, 12:20 UTCJul 7, 12:45 UTC25m - -

Performance history

Flights tracked
140 showing last 30
Avg arrival delay
+16m
On-time arrival
80% 80% on time
Aircraft used
19

Monthly activity 4 months

Month Flights tracked
July 2026 39
June 2026 40
May 2026 35
April 2026 26

SWA4021 frequently asked

Where does flight SWA4021 fly?
SWA4021 (Southwest Airlines) flies from BWI to BOS. View the full route page.
How long is flight SWA4021?
Based on observed flights, SWA4021 takes on average 2h 15m from takeoff to landing.
How often does SWA4021 fly?
SWA4021 has been observed flying several times a week in our tracking data. We've recorded 140 flights under this callsign.
Is flight SWA4021 usually on time?
Across recent flights, SWA4021 arrives with an average 16-minute delay. 80% of flights arrive within 15 minutes of schedule.
What aircraft operates flight SWA4021?
SWA4021 has been operated by 19 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track SWA4021 live?
Yes. When SWA4021 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.