BOS → STLBoston to St Louis

live

Direct flights from Boston (BOS) to St Louis (STL): 32 nonstop departures observed each week across 2 airlines. 93% of the last 14 tracked flights arrived within 15 minutes of schedule. The median arrival is 16 minutes early. No cancellations were recorded across the 20 tracked flights. The nonstop covers 1,681 km, an estimated 2 hours 39 minutes in the air. Measured by Pro Flight Search from live flight boards at Boston and St Louis. Updated 13 November 2026 at 19:08 UTC.

Today, BOS → STL

Fri 13 Nov · local times
WN4929Southwest30 min late

The BOS board at 14:08 shows departure at 19:05 instead of 18:35, gate B34 (TB).

Later cancelled
0.2%of 24,370 past Southwest flights whose board showed 20 to 40 min late
Still to leave today
No other nonstoplast BOS to STL departure of the day
Track WN4929 →
AA3444AmericanIn the air, 168 min late

Left BOS at 09:48, 168 min after its 07:00 slot.

Landing
11:42STL board estimate · sched 09:16
Track AA3444 →
  1. 05:10 WN819Southwest Left 05:10 Landed 06:41 −34
  2. 07:00 AA3444American Left 09:48 +168 STL est. 11:42 +146In the air · sched 09:16
  3. 12:55 WN958Southwest Left 13:00 +5 ·
  4. 15:25 AA4678American On scheduleGate B7 · TB ·
  5. 18:35 WN4929Southwest Est. 19:05 +30Gate B34 · TB ·

Checked BOS board 14:08 · STL board 10:18

BOS Boston heavy · +44
STL St Louis smooth · +0
1,681 km · ~2h 39m est.
dep bank 05:10–18:3532x weekly
Runs reliable · 2 airlines · 32x weekly · nonstop
93% on time

of the last 14 tracked BOS → STL flights arrived within 15 minutes

Median arrival delay is −16 min. 0 of 20 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−16 minacross the last 14 arrivals
Flight time~2h 39mestimated from route distance
Weekly departures32x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 20

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
American AirlinesSouthwest Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
American AirlinesAA100% on time

Flights AA3444 07:00 Mo Tu We Th Fr Su · AA4678 15:25 daily

Southwest AirlinesWN89% on time

Flights WN819 varies daily · WN958 12:55 Mo Tu We Th Fr Su · WN4929 18:35 Mo Tu We Th Fr Su

History

operated legs · board outcomes
11-13AA3444departed+168
11-13WN819dep +0 → arr−34
11-13WN958departed+5
11-12AA3444dep −11 → arr−37
11-12AA4678dep +42 → arr+6
11-12WN4929dep +5 → arr−24
11-12WN819arrived−19
11-12WN958dep +0 → arr−9
11-11AA3444dep +0 → arr−26
11-11AA4678arrived−5
11-11WN4929dep +0 → arr−16
11-11WN819arrived−25
11-11WN958dep +0 → arr−23
11-10AA3444departed−9
11-10AA4678dep −8 → arr−5
11-10WN4929arrived−10
11-10WN958dep +143 → arr+124
11-09AA3444departed−6
11-09WN4929departed+25
11-09WN819departed+0

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
BOSBoston +44 min heavy 🌤 overcast · NW 8 kt Full BOS delay board →
STLSt Louis +0 min smooth 🌤 overcast · N 12 kt Full STL delay board →

Weather lens

Conditions are tightest at BOS and STL: a 40% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +7 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the Boston to St Louis route actually runs

Pro Flight Search records official board updates for nonstop BOS to STL flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: Boston (BOS) to St Louis (STL) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/BOS-STL
How we measure this →

BOS to STL questions

Is BOS–STL running on time right now?

Mostly on schedule. The departure side at BOS is the weaker end, route health score 71/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on BOS–STL?

Operators schedule morning departures around 07:00 and evening departures around 18:35 from BOS. Earlier flights typically land before destination-airport delays accumulate later in the day; check the STL delay card to confirm conditions when you'd arrive.

How long is the flight from BOS to STL?

Great-circle distance is 1,681 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 149–174 min gate-to-gate on this route.

How often does BOS–STL fly?

2 carriers operate this route, around 32 flights a week between them. Compare carrier days and times in the airline list above.