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flight_takeoff Flight

SWA420

Operated by Southwest Airlines

Live map

Live map filtered to SWA420. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BOS KBOS MVFR

Boston Logan International Airport

Boston, US

Local time
03:01 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
70° / 16 kt
Visibility
10 SM
Ceiling
OVC 1,200 ft
Temp / Dew
14°C / 12°C
Altimeter
29.96 inHg

Obs: 2026-10-13T06:54:00.000Z

Raw METAR / TAF 
METAR KBOS 130654Z 07016KT 10SM OVC012 14/12 A2996 RMK AO2 SLP143 T01440122

TAF KBOS 130523Z 1306/1412 06012KT P6SM VCSH BKN015 OVC040 PROB30 1308/1310 4SM -SHRA BR OVC006 FM131000 07012KT 5SM BR VCSH OVC008 FM131700 12009KT 5SM BR VCSH FEW004 OVC008 PROB30 1321/1401 4SM -SHRA FM140100 18009KT 5SM BR OVC003 WS020/23035KT FM140500 22010KT 5SM BR BKN008

flight Live Traffic

flight_takeoff 96 Departures
flight_land 96 Arrivals

Arrival

STL KSTL VFR

St. Louis Lambert International Airport

St Louis, US

Local time
02:01 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
618 ft
Coordinates
38.7487, -90.3700

cloud Weather

Wind
240° / 5 kt
Visibility
10 SM
Ceiling
SCT 15,000 ft
Temp / Dew
24°C / 13°C
Altimeter
29.90 inHg

Obs: 2026-10-13T06:51:00.000Z

Raw METAR / TAF 
METAR KSTL 130651Z COR 24005KT 10SM SCT150 24/13 A2990 RMK AO2 SLP109 T02390133 $

TAF KSTL 130520Z 1306/1412 23009KT P6SM SKC FM132300 20008KT P6SM SCT100 FM140200 20006KT P6SM OVC100 PROB30 1407/1411 4SM -SHRA BKN070

flight Live Traffic

flight_takeoff 49 Departures
flight_land 75 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A1CE16 BOS → STL Jul 25, 10:15 UTCJul 25, 11:25 UTC1h 10m - -
2026-07-25 A1CE16 BOS → STL Jul 25, 10:12 UTCJul 25, 11:20 UTC1h 8m +12m +21m
2026-07-24 ABD1E3 BOS → STL Jul 24, 09:55 UTCJul 24, 11:00 UTC1h 5m - -
2026-07-24 ABD1E3 BOS → STL Jul 24, 09:54 UTCJul 24, 10:54 UTC1h 0m +4m +3m
2026-07-23 ABB1DE BOS → STL Jul 23, 10:00 UTCJul 23, 11:00 UTC1h 0m - -
2026-07-22 AC17B0 BOS → STL Jul 22, 11:10 UTCJul 22, 11:20 UTC10m - -
2026-07-21 AC61BC BOS → STL Jul 21, 10:10 UTCJul 21, 11:10 UTC1h 0m - -
2026-07-21 AC61BC BOS → STL Jul 21, 10:04 UTCJul 21, 11:09 UTC1h 5m +14m +16m
2026-07-20 A146CE - Jul 20, 10:10 UTCJul 20, 11:10 UTC1h 0m - -
2026-07-20 A146CE BDL → BWI Jul 20, 10:08 UTCJul 20, 11:12 UTC1h 4m +18m +12m
2026-07-20 AB5BB1 - Jul 20, 04:15 UTCJul 20, 05:35 UTC1h 20m - -
2026-07-18 A1CA5F - Jul 18, 10:05 UTCJul 18, 11:25 UTC1h 20m - -
2026-07-18 A1CA5F BDL → BWI Jul 18, 10:04 UTCJul 18, 11:20 UTC1h 17m +4m +11m
2026-07-17 AC6622 - Jul 17, 10:00 UTCJul 17, 10:55 UTC55m - -
2026-07-17 AC6622 BDL → BWI Jul 17, 09:54 UTCJul 17, 10:54 UTC1h 0m +4m +10m
2026-07-16 AC6668 - Jul 16, 11:05 UTCJul 16, 11:20 UTC15m - -
2026-07-16 AC6668 - Jul 16, 10:04 UTCJul 16, 11:20 UTC1h 15m - -
2026-07-16 AC6668 BDL → BWI Jul 16, 09:59 UTCJul 16, 10:50 UTC51m +9m +8m
2026-07-15 ABC14D HFD → BWI Jul 15, 10:00 UTCJul 15, 11:00 UTC1h 0m - -
2026-07-15 ABC14D BDL → BWI Jul 15, 09:57 UTCJul 15, 10:50 UTC53m +7m +11m
2026-07-14 AC53B2 - Jul 14, 10:15 UTCJul 14, 11:15 UTC1h 0m - -
2026-07-13 A63BF4 - Jul 13, 10:00 UTCJul 13, 11:00 UTC1h 0m - -
2026-07-13 ABF3DA - Jul 13, 01:35 UTCJul 13, 03:05 UTC1h 30m - -
2026-07-13 ABF3DA BHM → HOU Jul 13, 01:34 UTCJul 13, 03:04 UTC1h 30m +34m +19m
2026-07-11 A2E28F - Jul 11, 10:15 UTCJul 11, 11:10 UTC55m - -
2026-07-11 A2E28F BDL → BWI Jul 11, 10:11 UTCJul 11, 11:13 UTC1h 2m +11m +15m
2026-07-10 AC7188 - Jul 10, 10:10 UTCJul 10, 11:05 UTC55m - -
2026-07-09 ABC455 - Jul 9, 09:55 UTCJul 9, 10:55 UTC1h 0m - -
2026-07-08 AC2FC3 - Jul 8, 10:05 UTCJul 8, 11:10 UTC1h 5m - -
2026-07-07 AC6645 BDL → BWI Jul 7, 10:05 UTCJul 7, 11:15 UTC1h 10m - -

Performance history

Flights tracked
137 showing last 30
Avg arrival delay
+13m
On-time arrival
70% 70% on time
Aircraft used
19

Monthly activity 4 months

Month Flights tracked
July 2026 40
June 2026 38
May 2026 37
April 2026 22

SWA420 frequently asked

Where does flight SWA420 fly?
SWA420 (Southwest Airlines) flies from BOS to STL. View the full route page.
How long is flight SWA420?
Based on observed flights, SWA420 takes on average 1h 2m from takeoff to landing.
How often does SWA420 fly?
SWA420 has been observed flying several times a week in our tracking data. We've recorded 137 flights under this callsign.
Is flight SWA420 usually on time?
Across recent flights, SWA420 arrives with an average 13-minute delay. 70% of flights arrive within 15 minutes of schedule.
What aircraft operates flight SWA420?
SWA420 has been operated by 19 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track SWA420 live?
Yes. When SWA420 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.