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Cheap flights from St. Louis to London from £195

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — LON
3 May — 10 May1
1 adult
Fri 3/5
Fri 10/5

The best prices from Lambert-St Louis to London are usually found in February or January, booked 62 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from St. Louis to London

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 April 2024.

Popular in

June

Cheapest in

February

Average price

£642

Round-trip from

£69
High demand for flights, 35% potential price rise
Best time to find cheap flights, 23% potential price drop
Average for round-trip flights in April 2024
From Lambert-St Louis to London (LON)

What is the cheapest day to fly round-trip from St. Louis to London?

Wednesday flights are generally found to be more expensive for flights from St. Louis to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

How far in advance should I book a flight from St. Louis to London?

To save up to 134% on this flight, we recommend booking at least 35 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to London from £929 1-2 weeks out and tickets from £1,375 for flights departing within the next 72 hours.

What is the cheapest month to fly from St. Louis to London?

February is one of the best times of the year to fly to London from St. Louis. Prices for February average £745 per person but you can even find prices for as low as £525. The most expensive prices can be found in the month of June. Opting for a February flight can save you 54% on your journey compared to booking in June

When is the cheapest time to fly from St. Louis to London (STL - LON)?

It’s optimal to fly from St. Louis to London in the morning. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight at midday.

Cheap United Airlines flights from St. Louis to London

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.
Take a peek at the cheapest United Airlines flights we've detected travelling from St. Louis to London. Come back soon if you're not finding the exact deal you're looking for.
Sat 10/817:30STL - LHR
1 stop30h 25mUnited Airlines
Sat 31/813:05LHR - STL
1 stop12h 42mUnited Airlines
Deal found 28/4£625
Sat 31/817:20STL - LHR
2 stops35h 20mUnited Airlines
Sat 21/915:50LHR - STL
1 stop29h 30mUnited Airlines
Deal found 28/4£680
Sat 17/817:30STL - LHR
1 stop30h 25mUnited Airlines
Sun 25/810:35LHR - STL
1 stop17h 38mUnited Airlines
Deal found 28/4£693
Wed 28/812:00STL - LHR
1 stop12h 30mUnited Airlines
Thu 12/907:25LHR - STL
2 stops19h 11mUnited Airlines
Deal found 28/4£776
Wed 8/511:10STL - LHR
2 stops15h 10mUnited Airlines
Wed 15/507:25LHR - STL
2 stops15h 49mUnited Airlines
Deal found 28/4£820
Wed 8/515:15STL - LHR
2 stops13h 55mUnited Airlines
Wed 22/506:50LHR - STL
2 stops14h 56mUnited Airlines
Deal found 28/4£824
Thu 11/713:10STL - LHR
1 stop10h 45mUnited Airlines
Fri 19/710:35LHR - STL
1 stop17h 39mUnited Airlines
Deal found 28/4£831
Fri 24/511:38STL - LHR
1 stop12h 17mUnited Airlines
Wed 5/606:30LHR - STL
1 stop13h 00mUnited Airlines
Deal found 27/4£867
Sat 25/517:25STL - LHR
1 stop11h 45mUnited Airlines
Sat 1/606:50LHR - STL
2 stops14h 51mUnited Airlines
Deal found 27/4£905

Cheap Air Canada flights from St. Louis to London

Explore cheap flight options specifically provided by Air Canada for the route between St. Louis and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.
To aid your search, here are some of the cheapest Air Canada flights we've found from St. Louis to London. Make sure to examine the flight information before completing your reservation.
Sun 1/910:10STL - LHR
2 stops14h 20mAir Canada
Sun 15/908:30LHR - STL
2 stops18h 35mAir Canada
Deal found 28/4£737
Wed 24/712:00STL - LHR
1 stop12h 30mAir Canada
Wed 31/708:30LHR - STL
1 stop12h 51mAir Canada
Deal found 28/4£783
Sun 26/511:00STL - LHR
1 stop13h 30mAir Canada
Tue 11/608:30LHR - STL
1 stop12h 51mAir Canada
Deal found 28/4£785
Wed 8/511:00STL - LHR
1 stop13h 30mAir Canada
Wed 15/509:30LHR - STL
1 stop17h 35mAir Canada
Deal found 28/4£816
Sun 5/511:00STL - LHR
1 stop13h 30mAir Canada
Mon 13/514:05LHR - STL
1 stop13h 00mAir Canada
Deal found 28/4£865

Cheap St. Louis to London flights in April & May 2024

Find cheap flight options from St. Louis to London specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 916,678 searches. Prices were last updated on 28 April 2024.
The lowest fares we've come across on flights travelling from St. Louis to London in April and May 2024. Check back soon for alternative fares.
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Mon 3/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£438
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Mon 3/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£439
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Sat 1/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£472
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Sun 2/614:00LGW - STL
1 stop36h 20mMultiple Airlines
Deal found 28/4£518
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Sun 2/614:00LGW - STL
2 stops25h 36mMultiple Airlines
Deal found 28/4£531
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Sun 2/614:00LGW - STL
2 stops25h 36mMultiple Airlines
Deal found 28/4£532
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Mon 3/614:00LGW - STL
2 stops29h 09mMultiple Airlines
Deal found 28/4£533
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Wed 5/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£544
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Mon 3/612:50LGW - STL
3 stops30h 47mMultiple Airlines
Deal found 28/4£575

St. Louis to London 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and London in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.
The lowest fares we've come across on flights travelling from St. Louis to London in April and May 2024. Check back soon for alternative fares.
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Mon 3/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£438
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Mon 3/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£439
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Sat 1/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£472
Wed 18/910:00STL - LHR
2 stops25h 40mMultiple Airlines
Thu 26/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 28/4£513
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Sun 2/614:00LGW - STL
1 stop36h 20mMultiple Airlines
Deal found 28/4£518
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Sun 2/614:00LGW - STL
2 stops25h 36mMultiple Airlines
Deal found 28/4£531
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Sun 2/614:00LGW - STL
2 stops25h 36mMultiple Airlines
Deal found 28/4£532
Mon 27/521:20STL - LGW
1 stop30h 40mMultiple Airlines
Mon 3/614:00LGW - STL
2 stops29h 09mMultiple Airlines
Deal found 28/4£533
Tue 28/514:35STL - LGW
1 stop13h 25mMultiple Airlines
Wed 5/614:00LGW - STL
1 stop23h 08mMultiple Airlines
Deal found 28/4£544

St. Louis to London flights leaving soon

Find last-minute flight options from St. Louis to London for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.
Check out these flights departing soon from St. Louis to London. It's wise to confirm all flight details are correct before booking.
Sun 5/509:50STL - LHR
2 stops25h 50mMultiple Airlines
Mon 13/521:05LHR - STL
2 stops28h 56mMultiple Airlines
Deal found 28/4£695
Wed 8/512:53STL - LHR
1 stop16h 17mDelta
Wed 22/506:15LHR - STL
2 stops16h 31mDelta
Deal found 28/4£814
Wed 8/511:00STL - LHR
1 stop13h 30mAir Canada
Wed 15/509:30LHR - STL
1 stop17h 35mAir Canada
Deal found 28/4£816
Wed 8/511:10STL - LHR
2 stops15h 10mUnited Airlines
Wed 15/507:25LHR - STL
2 stops15h 49mUnited Airlines
Deal found 28/4£820
Wed 8/515:15STL - LHR
2 stops13h 55mUnited Airlines
Wed 22/506:50LHR - STL
2 stops14h 56mUnited Airlines
Deal found 28/4£824
Sun 5/515:25STL - LHR
1 stop17h 15mLufthansa
Mon 13/520:25LHR - STL
2 stops25h 21mLufthansa
Deal found 28/4£859
Sun 5/511:00STL - LHR
1 stop13h 30mAir Canada
Mon 13/514:05LHR - STL
1 stop13h 00mAir Canada
Deal found 28/4£865
Wed 8/510:20STL - LCY
2 stops14h 55mKLM
Wed 22/510:00LCY - STL
2 stops17h 52mKLM
Deal found 28/4£866
Wed 8/515:25STL - LCY
1 stop19h 00mMultiple Airlines
Wed 22/509:25LCY - STL
2 stops17h 40mMultiple Airlines
Deal found 28/4£879

One-way flights to London from St. Louis

Search for one-way flight options from St. Louis to London. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.
Take a look at some of the best available options we've come across on one-way flights from St. Louis to London. Users can also find round-trip St. Louis to London flights by using the search form above.
Wed 11/916:31STL - LGW
1 stop35h 29mMultiple Airlines
Deal found 28/4£195
Fri 6/918:42STL - LGW
1 stop33h 18mMultiple Airlines
Deal found 28/4£231
Wed 10/721:20STL - LGW
1 stop30h 40mMultiple Airlines
Deal found 28/4£248
Fri 6/918:42STL - LGW
1 stop33h 18mMultiple Airlines
Deal found 27/4£260
Mon 13/521:11STL - LGW
1 stop30h 49mMultiple Airlines
Deal found 28/4£293
Sun 22/912:45STL - LHR
3 stops17h 10mMultiple Airlines
Deal found 28/4£309
Sun 2/619:30STL - STN
3 stops33h 10mMultiple Airlines
Deal found 27/4£315
Sun 19/523:22STL - LGW
2 stops52h 38mMultiple Airlines
Deal found 27/4£350
Mon 13/516:05STL - LGW
2 stops36h 50mMultiple Airlines
Deal found 28/4£350

Find flights from St. Louis to London within your budget

Customise your flight search to find flights from St. Louis to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£438 - £866

Route

Depart

Return

Price

Lambert-St LouisLondon Gatwick

STL - LGW

STLLGW

Lambert-St Louis

Mon 27/5

1 stop30h 40m

London Gatwick

Mon 3/6

1 stop23h 08m

£438

Lambert-St LouisLondon Gatwick

STL - LGW

STLLGW

Lambert-St Louis

Wed 2/10

2 stops13h 55m

London Gatwick

Wed 9/10

2 stops17h 35m

£606

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sat 10/8

1 stop30h 25m

London Heathrow

Sat 31/8

1 stop12h 42m

£625

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 10/9

1 stop11h 12m

London Heathrow

Tue 17/9

1 stop14h 52m

£629

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Thu 5/9

1 stop9h 59m

London Heathrow

Mon 23/9

2 stops26h 17m

£657

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 1/9

1 stop17h 10m

London Heathrow

Sat 14/9

2 stops17h 25m

£675

Lambert-St LouisLondon Gatwick

STL - LGW

STLLGW

Lambert-St Louis

Tue 21/5

2 stops17h 20m

London Gatwick

Thu 30/5

1 stop25h 45m

£686

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 1/9

2 stops14h 20m

London Heathrow

Sun 15/9

2 stops18h 35m

£737

Lambert-St LouisLondon City

STL - LCY

STLLCY

Lambert-St Louis

Wed 8/5

2 stops15h 05m

London City

Wed 22/5

2 stops14h 41m

£866

Flights are sorted by cheapest first

Deals found on 28/4

When is the best time to book a flight from St. Louis to London?

Use this chart to determine the optimal time to book a return flight from St. Louis to London. Price data was last updated on 28 January 2024.
Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from St. Louis to London?

Use this chart to determine the cheapest time to fly return from St. Louis to London. Price data was last updated on 28 April 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their St. Louis to London flight should consider departing on Thursday at midday when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to London by month

Plan your trip from St. Louis to London by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to London is currently £284 while a return flight costs £658. Price data was last updated on 28 April 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to London (average of £111). Flying from St. Louis to London in June is currently the most expensive (average of £171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

£89

February

£100

March

£95

April

£100

May

£110

June

£137

July

£137

August

£116

September

£110

October

£127

November

£92

December

£97

Temperature and rainfall in London by month

Plan your trip to London by taking into account the average temperature and rainfall totals by month.

LON

Temperature

4 - 17 °C

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 28 April 2024.
Read through reviews of airlines operating flights from St. Louis to London, such as United Airlines, Air Canada and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
10,932 reviews

Overall

8.1

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

8.1
Very Good
10,932 reviews
8.1
Very Good
10,932 reviews

Overall

8.1

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.9
Good
1,623 reviews
8.1
Very Good
10,932 reviews

Overall

8.1

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.7
Good
745 reviews
8.1
Very Good
10,932 reviews

Overall

8.1

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.7
Good
1,083 reviews
8.1
Very Good
10,932 reviews

Overall

8.1

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.6
Good
1,806 reviews
8.1
Very Good
10,932 reviews

Overall

8.1

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from St. Louis to London?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to London. On average, Lambert-St Louis has 0 outbound flights to London per day from 3 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • Can I find flights from St. Louis to London for under £500 on Cheapflights?

    Yes, there are multiple flights from St. Louis to London for under £500. The cheapest flight booked recently is on Multiple Airlines for just £438, but on average you can expect to pay £551.

  • Are there last-minute flights available from St. Louis to London for under £700?

    There are currently 15+ open flights from St. Louis to London within the next 7 days for less than £700.

  • What are the cheapest airlines flying from St. Louis to London round-trip?

    Delta, at £606, was found to be the cheapest airline from St. Louis to London.Alternate airlines flying return to your destination include United Airlines and American Airlines. Users have found that Delta is 18% cheaper than the other options available to this destination.

  • What are the most popular routes from St. Louis to London?

  • What are the most popular airlines that fly from St. Louis to London?

  • What does STL to LHR mean?

    Great question - STL to LHR just means Lambert-St Louis Airport to London Heathrow Airport. Now you’ll know what these unique codes when you look for flights! This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN).

  • Can I find deals for flights from St. Louis to London that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to London flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to London with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to London flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to London that include hotel bookings?

    Yes. In addition to deals on St. Louis to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to London.

  • Can I find deals for business class flights from St. Louis to London?

    Yes. Cheapflights offers flight deals from St. Louis to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to London that allow pets onboard?

    Many airlines flying from St. Louis to London offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to London?

    Yes, you can often find last-minute deals on St. Louis to London flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to London flight deals updated?

    The St. Louis to London flight deals you see on this page were last updated on 28/4.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from St. Louis to London

Discover the top 3 airlines that operate flights from St. Louis to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 916,678 searches. Data last updated 28 April 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£444Average£591FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£487Average£618FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£545Average£579FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Search flights from St. Louis to London by cabin class

Find flights from St. Louis to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St. Louis to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to London?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis to London with no change fees?

Yes! Cheapflights helps users easily find flights from St. Louis to London with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to London become cheaper?

Yes! Start tracking prices for St. Louis to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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