BOS → STLBoston to St Louis

live

Direct flights from Boston (BOS) to St Louis (STL): 33 nonstop departures observed each week across 2 airlines. 92% of the last 24 tracked flights arrived within 15 minutes of schedule. The median arrival is 18 minutes early. No cancellations were recorded across the 26 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 1 November 2026 at 22:28 UTC.

Today, BOS → STL

Sun 1 Nov · local times
  1. 05:10 WN819Southwest Departed Landed 06:51 −24
  2. 07:00 AA3444American Left 06:54 Landed 08:41 −35
  3. 12:55 WN958Southwest Est. 13:04Departure not confirmed by the board STL est. 15:01 +6sched 14:55
  4. 15:25 AA4678American Sched 15:25Departure not confirmed by the board STL est. 17:19sched 17:47
  5. 18:35 WN4929Southwest On scheduleGate B31A · TB ·

Checked BOS board 17:28 · STL board 15:18

BOS Boston smooth · +0
STL St Louis smooth · +0
1,681 km · ~2h 39m est.
dep bank 05:15–18:4533x weekly
Runs reliable · 2 airlines · 33x weekly · nonstop
92% on time

of the last 24 tracked BOS → STL flights arrived within 15 minutes

Median arrival delay is −18 min. 0 of 26 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−18 minacross the last 24 arrivals
Flight time~2h 39mestimated from route distance
Weekly departures33x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 26

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 AirlinesAA90% on time

Flights AA3546 07:15 daily · AA4512 15:25 daily

Southwest AirlinesWN100% on time

Flights WN2620 05:15 Tu We · WN816 05:25 Mo Th Fr Su · WN575 11:45 Tu We · WN1015 11:50 Mo Th Fr Sa

History

operated legs · board outcomes
11-01AA3444dep −6 → arr−35
11-01WN819arrived−24
10-31AA3546dep −6 → arr−21
10-31WN3432dep +0 → arr−16
10-31WN3606dep +0 → arr−23
10-30AA3546dep −8 → arr−13
10-30AA4512arrived−3
10-30WN1015dep +0 → arr−16
10-30WN816arrived−22
10-30WN819dep +0 → arr+9
10-29AA3546arrived−14
10-29AA4512dep −10 → arr−18
10-29LXJ566arrived+50
10-29WN1015dep +0 → arr−27
10-29WN816arrived−21
10-29WN819arrived+14
10-28AA3546arrived−8
10-28AA4512dep −2 → arr−18
10-28WN2620dep +0 → arr−22
10-28WN575dep +0 → arr−20
10-28WN819dep +0 → arr−33
10-27AA3546arrived−28
10-27AA4512arrived+22
10-27WN2620dep +0 → arr−30
10-27WN575departed+0
10-27WN819departed+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 +0 min smooth 🌤 few clouds · SW 8 kt Full BOS delay board →
STLSt Louis +0 min smooth 🌫 overcast · SE 8 kt Full STL delay board →

Weather lens

Conditions are tightest at BOS and STL: a 41% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +6 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?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. 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 05:15 and evening departures around 18:45 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 33 flights a week between them. Compare carrier days and times in the airline list above.