£257 Find Cheap Flights from St. Louis to London – Compare and Save

Two cabin classes are available on flights from St. Louis to London:

• Economy class
• Business Class

A direct flight from St. Louis to London takes 00m, covering 4,198 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Return flights from St. Louis to London range from £576 to £995, with an average of £747 over the past 12 months. Anything below £576 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 16% above the £747 route average. Book 24 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £680 return via Philadelphia (PHL), compared with £787 for direct.

British Airways is the only airline operating St. Louis to London flights. 82% of its flights are on time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £52–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

American Airlines is the only airline on the St. Louis to London route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from St. Louis to London are currently lower than usual. Average one-way flight prices are about £274, which is 31% below the typical average for this route.

Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
Near London Heathrow Airport (LHR) – daily rates from around £29:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• Hertz

Near London Gatwick Airport (LGW) – daily rates from around £29:

• GREEN MOTION
• DRIVALIA
• U-Save
• Europcar
• Alamo

Near London City Airport (LCY) – daily rates from around £30:

• GREEN MOTION
• Budget
• Hertz
• Avis
• Sixt

Near London Stansted Airport (STN) – daily rates from around £29:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• U-Save

Near London Luton Airport (LTN) – daily rates from around £31:

• GREEN MOTION
• DRIVALIA
• Alamo
• Europcar
• U-Save

Flights from St. Louis to London usually depart from Lambert-St Louis (STL) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

Evening flights have the fewest delays on this route, while night departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the St. Louis to London route, 18% of flights were delayed in the past three months, with delays averaging 1h 54m.

One-stop flights from St. Louis to London most commonly connect through:

• Chicago O'Hare Intl (ORD) – 44% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) – 19% of one-stop connections
• Toronto Pearson Intl (YYZ) – 14% of one-stop connections
• Charlotte Douglas (CLT) – 5% of one-stop connections

Yes. Flexible dates can save you up to 18% on flights from St. Louis to London. Thursday is the cheapest departure day at £705 return on average, while Friday is the most expensive at £856, a difference of £151.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time of 11h 42m, compared to 11h 44m via Detroit Metropolitan Wayne County (DTW) and 11h 55m via Toronto Pearson Intl (YYZ).

London is 5 hours ahead of St. Louis (British Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in London are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London on KAYAK.

Among airlines operating St. Louis to London flights:

• British Airways: offers extra legroom
• American Airlines: offers free seat selection
• Iberia: offers free seat selection
• Finnair: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• British Airways: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Economy class
• Iberia: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

There are many hotels to choose from near Lambert St Louis. Choose a luxury stay at the Hilton Hotel, offering a pool, dining and airport shuttle service. The closest hotel to the airport is Drury Inn and Suites, only a 2min drive away.

Wheelchair access is available at each entrance, and inside the terminal, you will find accessible restrooms, low-level ATMs for wheelchair users and elevators. There is an area for service animals, and Braille text is used on signage throughout. If you require assistance boarding the plane, we recommend contacting your airline at least 48h prior to departure to book a skycap.

London City and London Heathrow are the most centrally-located London airports. You can get from Heathrow to the city centre on the Heathrow Express in around 20min with services running roughly every 15min. If you're travelling from London City Airport, you can take the Docklands Light Railway (DLR) from the airport station to Canning Town, where you can change to a London Underground or bus service to your final destination. The journey time should take on average around 40min - 1h.

Services available at St Louis Airport range from banking and currency exchange to luggage trolley rental. You can access Wi-Fi for free for 60min, with a small fee applicable for longer use. For anyone wishing to partake in prayer or other religious obligations, St Louis Interfaith Chapel is located on site. Shoe-shining facilities are available in each terminal, and help location points allow tourists to seek advice or assistance when navigating the airport. You can choose from several restaurants to eat at and newsagents and gift shops to browse whilst you wait for boarding to start.