Cheap flights from St. Louis, MO to London, United Kingdom

Flights starting at £130. Choose between Spirit Airlines, Frontier Airlines, or United Airlines to find the best price.

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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 Spirit Airlines, Frontier Airlines, United Airlines, Virgin Atlantic Airways, and Southern Airways Express. St. Louis and London have 182 direct flights per week. When you arrive at London, consider visiting Roman Baths, Bath, British Museum, St. Paul's Cathedral, Isle of Wight, Portsea Island, Tower of London, Tate Modern, Canterbury Cathedral, Natural History Museum, Stonehenge, and Avebury.

Check-in for a flight from St. Louis to London

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Virgin Atlantic AirwaysVIRVSYes0
0
Southern Airways ExpressFDY9XYesNo

Weather in London

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January7°C2°C
February8°C3°C
March10°C3°C
April14°C5°C
May17°C8°C
June20°C11°C
July22°C14°C
August22°C14°C
September19°C12°C
October15°C9°C
November10°C6°C
December8°C3°C
Hottest Month
22°C
July
Coldest month
2°C
January
Sunny days
275
days per year
Snow days
3
days per year

14 day forecast

Friday
15 Mar
94%
14°C10°C
22 Mar
15°C10°C
Saturday
16 Mar
89%
13°C6°C
23 Mar
18°C9°C
Sunday
17 Mar
89%
15°C10°C
24 Mar
15°C11°C
Monday
18 Mar
86%
14°C9°C
25 Mar
18°C9°C
Tuesday
19 Mar
81%
16°C9°C
26 Mar
73%
11°C6°C
Wednesday
20 Mar
16°C10°C
27 Mar
79%
11°C4°C
Thursday
21 Mar
16°C9°C
28 Mar
86%
12°C4°C

Frequently asked questions

What are the most popular routes to and from St. Louis?
What are the most popular routes to and from London?
What airports are near St. Louis?
What airports are near London?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and London?
What is Virtual Interlining and how do I use it?
Which airlines fly between St. Louis and London?
When's the best time to travel between St. Louis and London?
What flights operate between St. Louis and London?
How many airports are there near St. Louis?
How many airports are there near London?
What time do nonstop (direct) flights between St. Louis and London depart?
What time do nonstop (direct) flights between St. Louis and London arrive?
What time do flights between St. Louis and London depart?
What time do flights between St. Louis and London arrive?

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