WN3891 Southwest Airlines - Flight Status
Below, you can find details about Southwest Airlines flight WN3891, which currently operates between the airports of Saint Louis - St Louis Lambert International Airport (Airport Code STL) and Boston - Boston Logan International Airport (Airport Code BOS).
This flight data pertains specifically to the flight's details for Monday, July 20, 2026.
Table of contents:
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN3891
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN3891
WN3891 On Time performance:
79
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays Flight Status
WN3891 Southwest Airlines from Saint Louis
Scheduled - On-time
Flight Status for Monday July 20, 2026
This flight was also scheduled for Yesterday (July 19, 2026). See it here
This flight is also scheduled for Tomorrow (July 21, 2026). See it here
Scheduled - On-time
Flight Status for Monday July 20, 2026
Departure
Saint Louis (STL)
July 20, 2026
St Louis Lambert International Airport
Scheduled Departure Time:
09:55 am
Terminal:
2
Gate:
E38
Scheduled Departure Time: 09:55 am
Arrival
Boston (BOS)
July 20, 2026
Boston Logan International Airport
Estimated Arrival Time:
01:30 pm
Terminal:
B
Gate:
B32
Scheduled Arrival Time: 01:30 pm
Baggage: 8
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.boston-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Additional Information
Which is the frequency of flight WN3891?
The flight WN3891 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.
Which is the distance of flight WN3891?
The distance between the two airports is 1044 miles.
Which is the flight time of flight WN3891?
The scheduled flight time gate to gate is: 02:35 hours.
The real flight time gate to gate on average is: 02:33 hours.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Saint Louis: 2026-07-20 02:18:59
Current Time in Boston: 2026-07-20 03:18:59
The flight WN3891 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.
Which is the distance of flight WN3891?
The distance between the two airports is 1044 miles.
Which is the flight time of flight WN3891?
The scheduled flight time gate to gate is: 02:35 hours.
The real flight time gate to gate on average is: 02:33 hours.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Saint Louis: 2026-07-20 02:18:59
Current Time in Boston: 2026-07-20 03:18:59
Alternative Flights
The following airlines serves the same route between Saint Louis and Boston:
American Airlines
- Flight Number: AA3814. (On Time performance: 88 - Average Delay: 26 minutes)
- Flight Number: AA4582. (On Time performance: 75 - Average Delay: 45 minutes)
- Flight Number: AA4678. (On Time performance: 60 - Average Delay: 39 minutes)
Southwest Airlines
- Flight Number: WN2416. (On Time performance: 42 - Average Delay: 31 minutes)
- Flight Number: WN2443. (On Time performance: 50 - Average Delay: 50 minutes)
- Flight Number: WN3892. (On Time performance: 35 - Average Delay: 48 minutes)
- Flight Number: WN4724. (On Time performance: 52 - Average Delay: 22 minutes)
American Airlines
- Flight Number: AA3814. (On Time performance: 88 - Average Delay: 26 minutes)
- Flight Number: AA4582. (On Time performance: 75 - Average Delay: 45 minutes)
- Flight Number: AA4678. (On Time performance: 60 - Average Delay: 39 minutes)
Southwest Airlines
- Flight Number: WN2416. (On Time performance: 42 - Average Delay: 31 minutes)
- Flight Number: WN2443. (On Time performance: 50 - Average Delay: 50 minutes)
- Flight Number: WN3892. (On Time performance: 35 - Average Delay: 48 minutes)
- Flight Number: WN4724. (On Time performance: 52 - Average Delay: 22 minutes)
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from June 04, 2026 to July 17, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from June 04, 2026 to June 30, 2026. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from June 04, 2026 to July 17, 2026, we have obtained these figures.
Total number of flights: 38
On Time: 30 ( 79 % )
Moderate Delay: 5 ( 13 % )
Significant Delay: 1 ( 3 % )
Major Delay: 2 ( 5 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 13 minutes.
Total number of flights: 38
On Time: 30 ( 79 % )
Moderate Delay: 5 ( 13 % )
Significant Delay: 1 ( 3 % )
Major Delay: 2 ( 5 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 13 minutes.
Last Past Flights WN3891
Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
19 July
19 July
10:42 am
Saint Louis (STL)
Saint Louis (STL)
02:13 pm
Boston (BOS)
Boston (BOS)
02h 31min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Friday
17 July
17 July
09:56 am
Saint Louis (STL)
Saint Louis (STL)
01:28 pm
Boston (BOS)
Boston (BOS)
02h 32min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
16 July
16 July
09:55 am
Saint Louis (STL)
Saint Louis (STL)
01:27 pm
Boston (BOS)
Boston (BOS)
02h 32min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Wednesday
15 July
15 July
10:18 am
Saint Louis (STL)
Saint Louis (STL)
01:44 pm
Boston (BOS)
Boston (BOS)
02h 26min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Tuesday
14 July
14 July
10:24 am
Saint Louis (STL)
Saint Louis (STL)
02:01 pm
Boston (BOS)
Boston (BOS)
02h 37min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Monday
13 July
13 July
09:57 am
Saint Louis (STL)
Saint Louis (STL)
01:41 pm
Boston (BOS)
Boston (BOS)
02h 44min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
12 July
12 July
10:16 am
Saint Louis (STL)
Saint Louis (STL)
01:57 pm
Boston (BOS)
Boston (BOS)
02h 41min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Friday
10 July
10 July
10:03 am
Saint Louis (STL)
Saint Louis (STL)
01:26 pm
Boston (BOS)
Boston (BOS)
02h 23min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
09 July
09 July
09:55 am
Saint Louis (STL)
Saint Louis (STL)
01:29 pm
Boston (BOS)
Boston (BOS)
02h 34min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Wednesday
08 July
08 July
10:20 am
Saint Louis (STL)
Saint Louis (STL)
01:58 pm
Boston (BOS)
Boston (BOS)
02h 38min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
