STL → BOSSt Louis to Boston

live

Direct flights from St Louis (STL) to Boston (BOS): 35 nonstop departures observed each week across 2 airlines. 92% of the last 13 tracked flights arrived within 15 minutes of schedule. The median arrival is 13 minutes early. No cancellations were recorded across the 22 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 30 October 2026 at 16:09 UTC.

Today, STL → BOS

Fri 30 Oct · local times
  1. 05:50 WN863Southwest Left 06:01 +11 BOS est. 09:12In the air · sched 09:25
  2. 10:00 AA3546American Left 10:00 BOS est. 13:11In the air · sched 13:44
  3. 10:20 WN485Southwest Est. 10:20Departure not confirmed by the board BOS est. 13:43sched 14:00
  4. 10:30 1I859NetJets Aviation Est. 10:30Departure not confirmed by the board ·
  5. · AA4512American On schedule BOS 21:57scheduled

Checked STL board 10:18 · BOS board 12:09

STL St Louis smooth · +5
BOS Boston smooth · +0
1,681 km · ~2h 39m est.
dep bank 05:55–21:0535x weekly
Runs reliable · 2 airlines · 35x weekly · nonstop
92% on time

of the last 13 tracked STL → BOS flights arrived within 15 minutes

Median arrival delay is −13 min. 0 of 22 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−13 minacross the last 13 arrivals
Flight time~2h 39mestimated from route distance
Weekly departures35x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 22

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 AirlinesWN89% on time

Flights WN863 varies Mo Th Fr · WN2805 06:40 Tu We · WN4527 10:10 Sa · WN485 10:20 Mo Th Fr

History

operated legs · board outcomes
10-30AA3546departed+0
10-30WN863departed+11
10-29AA3546dep +12 → arr−14
10-29AA4512departed+6
10-29WN259departed+148
10-29WN485dep +18 → arr−7
10-29WN863dep +0 → arr−19
10-28AA3546dep +6 → arr−29
10-28AA4512departed+1
10-28WN2805dep +5 → arr−12
10-28WN3694dep +13 → arr−13
10-28WN380dep +13 → arr−15
10-27AA3546departed+7
10-27AA4512dep +27 → arr−4
10-27WN2805dep +3 → arr−17
10-27WN3694dep +17 → arr−7
10-27WN380dep +72 → arr+42
10-26AA3546departed+11
10-26AA4512dep +7 → arr−23
10-26WN259departed+26
10-26WN485dep +20 → arr−7
10-26WN863departed+5

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 +5 min smooth 🌤 few clouds · ESE 9 kt Full STL delay board →
BOSBoston +0 min smooth 🌤 few clouds · W 15 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 +8 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?

Smooth skies ahead. The departure side at STL is the weaker end, route health score 95/100. 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 06:40 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 35 flights a week between them. Compare carrier days and times in the airline list above.