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British Airways flights from London to St. Louis (LON - STL)

LON — STL
4 May — 11 May1
1 adult

Cheapflights users flying from London to St. Louis on British Airways typically fly into Lambert-St Louis and depart from London Heathrow. Select your dates above for pricing.

British Airways flights from London to St. Louis in 2025

Find detailed information about British Airways flights from London to St. Louis. Explore the options provided by British Airways to plan your journey from London to St. Louis. Data last updated 29 April 2025.

One-way from

£997

Return from

£686

Popular in

December

Cheapest in

March

Average price (all airlines)

£701
British Airways
  • British Airways
  • 5/10
  • 2 total stops
  • 52h 23m total
  • London to St. Louis
British Airways
  • British Airways
  • 26/5-2/6
  • 3 total stops
  • 35h 32m total
  • London to St. Louis
Highest demand for flights from London to Lambert-St Louis; 4% potential price increase.
Best time to find cheap flights from London to Lambert-St Louis; 4% potential price drop.
Average price for all London to Lambert-St Louis flights (one-way and round-trip).
  • How do most travelers feel about British Airways?

    The average rating from 1,273 British Airways reviews by Cheapflights users is 7.6 (out of a maximum rating of 10). If you are considering flying LON-STL with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to St. Louis with British Airways.

Find British Airways flight deals from London to St. Louis

Cheapest British Airways flights from London to St. Louis
Explore the most affordable British Airways flight options available from London to St. Louis. Find the lowest fares with prices last updated on 29 April 2025.

Tue 6/519:30LHR - STL
2 stops31h 28mBritish Airways
Mon 19/516:15STL - LHR
1 stop12h 15mBritish Airways
Deal found 28/4£671

Travel insights for British Airways flights from London to St. Louis

Get recent, data-driven insights about British Airways flights from London to St. Louis including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London to St. Louis with British Airways?

Use this chart to determine the optimal time to book a return flight from London to St. Louis. Price data was last updated on 25 April 2025.

Booking with British Airways 15 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to St. Louis with British Airways?

Currently, the most affordable month to book a British Airways flight from London to St. Louis in February, with an average price of £546. Conversely, traveling with British Airways from London to St. Louis in August will be the most expensive, with an average cost of £747. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Best time to book a flight from London to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Fly from London to St. Louis on another airline

Consider alternative airlines that service the St. Louis area. Flight routes are based on user searches made on Cheapflights and were last updated on 29 April 2025.

See what others are saying about British Airways

Read reviews and see what other travellers are saying about their experiences with British Airways. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing British Airways for your next flight. Reviews last updated 29 April 2025.
British Airways
6.6
Okay
6,830 reviews
Overview

Food

6.3

Boarding

6.8

Comfort

6.7

Crew

7.6

Entertainment

6.4

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