Cheap flights from St. Louis, MO to London, United Kingdom
Flights starting at $347. Choose between Frontier Airlines, WestJet, or United Airlines to find the best price.
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Tips to know when travelling to London
Cheapest one-way trip | $399 |
---|---|
Cheapest round-trip | $706 |
Average round-trip | $850 |
Includes rare itinerary | |
Most popular airline | Frontier Airlines |
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Book your trip to arrive at Gatwick, Heathrow, Luton, London Stansted, or London City. The most popular airlines for this route are Frontier Airlines, WestJet, United Airlines, easyJet, and Spirit Airlines. St. Louis and London have 217 direct flights per week. When you arrive at London, consider visiting Avebury, Tate Modern, Roman Baths, Bath, Isle of Wight, Canterbury Cathedral, Natural History Museum, Tower of London, St. Paul's Cathedral, Portsea Island, Stonehenge, and British Museum.
Check-in for a flight from St. Louis to London
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
WestJet | WJA | WS | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
easyJet | EZY | U2 | No | Opens 720 days before flight Closes 2 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in London
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 7°C | 2°C |
February | 8°C | 3°C |
March | 11°C | 4°C |
April | 14°C | 5°C |
May | 17°C | 8°C |
June | 20°C | 11°C |
July | 22°C | 14°C |
August | 22°C | 14°C |
September | 19°C | 12°C |
October | 15°C | 9°C |
November | 10°C | 6°C |
December | 8°C | 3°C |
14 day forecast
Frequently asked questions
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