STL → BOSSt Louis to Boston

live

Direct flights from St Louis (STL) to Boston (BOS): 31 nonstop departures observed each week across 2 airlines. 87% of the last 15 tracked flights arrived within 15 minutes of schedule. The median arrival is 13 minutes early. No cancellations were recorded across the 24 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 St Louis and Boston. Updated 2 November 2026 at 06:12 UTC.

Today, STL → BOS

Mon 2 Nov · local times
  1. · WN570Southwest On schedule BOS 09:30scheduled

Checked STL board 00:12 · BOS board 01:09

STL St Louis heavy · +36
BOS Boston smooth · +0
1,681 km · ~2h 39m est.
dep bank 05:50–19:5531x weekly
Runs reliable · 2 airlines · 31x weekly · nonstop
87% on time

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

Median arrival delay is −13 min. 0 of 24 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−13 minacross the last 15 arrivals
Flight time~2h 39mestimated from route distance
Weekly departures31x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 24

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 AirlinesAA

Flights AA3546 10:00 daily · AA4512 18:10 daily

Southwest AirlinesWN82% on time

Flights WN863 varies Mo Th Fr · WN570 06:00 Mo Su · WN2805 06:40 Tu We · WN485 10:20 Mo Th Fr

History

operated legs · board outcomes
11-01AA3444dep +8 → arr−16
11-01AA4678departed+3
11-01LN45MWdeparted+0
11-01WN4431dep +38 → arr+28
11-01WN4918dep +10 → arr−2
11-01WN570dep +0 → arr−21
10-31AA3546departed+1
10-31WN3529dep +8 → arr−12
10-31WN3565departed+29
10-301I859departed+24
10-30AA3546dep +0 → arr−31
10-30AA4512departed+6
10-30WN259dep +35 → arr+16
10-30WN485dep +18 → arr−11
10-30WN863departed+11
10-29AA3546dep +12 → arr−14
10-29AA4512departed+6
10-29WN259departed+148
10-29WN485dep +18 → arr−7
10-29WN863dep +0 → arr−19
10-28AA3546arrived−29
10-28WN2805arrived−12
10-28WN3694arrived−13
10-28WN380arrived−15

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
STLSt Louis +36 min heavy 🌫 overcast · SE 7 kt Full STL delay board →
BOSBoston +0 min smooth 🌤 clear · WSW 7 kt Full BOS delay board →

Weather lens

Conditions are tightest at STL and BOS: a 43% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +12 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the St Louis to Boston route actually runs

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

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

STL to BOS questions

Is STL–BOS running on time right now?

Mostly on schedule. The departure side at STL is the weaker end, route health score 74/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–BOS?

Operators schedule morning departures around 06:00 and evening departures around 18:10 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BOS delay card to confirm conditions when you'd arrive.

How long is the flight from STL to BOS?

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 STL–BOS fly?

2 carriers operate this route, around 31 flights a week between them. Compare carrier days and times in the airline list above.