STL → LHRSt Louis to London

live

Direct flights from St Louis (STL) to London (LHR): 4 nonstop departures observed each week across 1 airline. The median arrival is 17 minutes early. No cancellations were recorded across the 4 tracked flights. The nonstop covers 6,742 km, an estimated 9 hours 9 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and London. Updated 17 October 2026 at 23:04 UTC.

STL St Louis smooth · +0
LHR London smooth · +0
6,742 km · ~9h 09m est.
departs 21:354x weekly
Running clean · 1 airline · 4x weekly · nonstop
100 / 100

route health from live STL and LHR delay boards

Median arrival delay is −17 min. 0 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−17 minacross the last 4 operated legs
Flight time~9h 09mestimated from route distance
Weekly departures4x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
British Airways

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
British AirwaysBA

Flights BA220 21:35 Tu We Fr Su

History

operated legs · board outcomes
10-16BA220dep +22 → arr−18
10-14BA220dep +9 → arr−17
10-13BA220dep +13 → arr−22
10-11BA220dep +68 → arr+28

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 +0 min smooth 🌤 clear · S 3 kt Full STL delay board →
LHRLondon +0 min smooth 🌤 clear · NE 12 kt Full LHR delay board →

Weather lens

Current conditions put the pressure at STL: 36% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the St Louis to London route actually runs

Pro Flight Search records official board updates for nonstop STL to LHR 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 London (LHR) route reliability, measured from operated flights on official airport boards.

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

STL to LHR questions

Is STL–LHR 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.

How long is the flight from STL to LHR?

Great-circle distance is 6,742 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 506–608 min gate-to-gate on this route.

How often does STL–LHR fly?

British Airways runs the route with about 4 flights a week (sun, tue, wed, fri). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at STL and arrival-side delay at LHR, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.