Cheap Flights from St Louis to London
No deal from St Louis to London has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from St Louis to London, the lowest round-trip fare we recorded was $503, in September. The typical fare was $848. September was the cheapest month we saw and October the dearest.
The most recent price we saw on this route was $918 on American and British Airways, seen Oct 16. It is an unverified observation and may have changed.
See every deal <a href="/from/st-louis">from St Louis</a>, <a href="/to/london">to London</a>, or the return direction <a href="/from/london/to/st-louis">London to St Louis</a>.
Latest price we saw: St Louis to London
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| St Louis (STL) to London (LGW) | $918 | 10.9¢ | Mar 22 – Mar 30 | American and British Airways | Oct 16 | Check price |
Price history: St Louis to London
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $887 | $984 | 39 |
| Sep 2026 | $503 | $752 | 182 |
| Aug 2026 | $738 | $770 | 83 |
| Jul 2026 | $885 | $885 | 3 |
Frequently asked questions
How many flight deals from St Louis to London are on Sparkflights right now?
There are 0 verified deals from St Louis to London on the board right now. The list refreshes hourly.
What is the lowest price ever seen from St Louis to London?
The lowest fare we've recorded from St Louis to London is $503, based on 307 price observations over 4 months.
How much does a flight from St Louis to London cost?
The typical round-trip fare we observed from St Louis to London is $848, against a recorded low of $503. These are observations, not quotes.
When is the cheapest month to fly St Louis to London?
September was the cheapest month we observed from St Louis to London and October the dearest, over 4 months of data.
What is the current price from St Louis to London?
The most recent fare our sweep saw from St Louis to London is $918, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.