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Cheap flights from St. Louis to London from £166

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 30/9. 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
26 Jun — 3 Jul1
1 adult
Wed 26/6
Wed 3/7

The best prices from Lambert-St Louis to London are usually found in February or April, booked 9 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 21 June 2024.

Popular in

June

Cheapest in

February

Average price

£1,137

Round-trip from

£69
High demand for flights, 36% potential price rise
Best time to find cheap flights, 22% potential price drop
Average for round-trip flights in June 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 13% on this flight, we recommend booking at least 10 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 £462 1-2 weeks out and tickets from £522 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 £728 per person but you can even find prices for as low as £493. The most expensive prices can be found in the month of June. Opting for a February flight can save you 56% on your journey compared to booking in June

What is the cheapest time of day to fly from STL to LON?

It’s optimal to fly from St. Louis to London in the morning. By choosing this option you can save up to 3% 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 937,175 searches. Data last updated 21 June 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.
Wed 25/911:10STL - LHR
1 stop12h 45mUnited Airlines
Tue 8/1018:00LHR - STL
2 stops26h 48mUnited Airlines
Deal found 20/6£579
Tue 24/909:50STL - LHR
1 stop14h 40mUnited Airlines
Tue 1/1006:50LHR - STL
2 stops13h 58mUnited Airlines
Deal found 20/6£582
Thu 15/817:03STL - LHR
1 stop12h 32mUnited Airlines
Fri 30/814:05LHR - STL
1 stop13h 00mUnited Airlines
Deal found 20/6£582
Tue 24/906:02STL - LHR
2 stops18h 28mUnited Airlines
Tue 1/1006:50LHR - STL
2 stops13h 58mUnited Airlines
Deal found 20/6£585
Wed 25/909:30STL - LHR
2 stops15h 15mUnited Airlines
Wed 2/1006:50LHR - STL
2 stops13h 58mUnited Airlines
Deal found 20/6£589
Wed 14/806:08STL - LHR
2 stops18h 22mUnited Airlines
Wed 11/907:25LHR - STL
2 stops15h 46mUnited Airlines
Deal found 20/6£603
Fri 8/1117:30STL - LHR
1 stop10h 45mUnited Airlines
Fri 15/1114:30LHR - STL
2 stops31h 28mUnited Airlines
Deal found 20/6£614
Tue 8/1009:50STL - LHR
1 stop18h 10mUnited Airlines
Sun 20/1007:25LHR - STL
2 stops15h 46mUnited Airlines
Deal found 20/6£617
Fri 20/916:51STL - LHR
1 stop13h 29mUnited Airlines
Fri 27/916:00LHR - STL
2 stops29h 59mUnited Airlines
Deal found 20/6£619

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 937,175 searches. Data last updated 21 June 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.
Tue 24/909:50STL - LHR
1 stop18h 10mAir Canada
Tue 1/1009:30LHR - STL
1 stop17h 35mAir Canada
Deal found 20/6£581
Sun 18/812:00STL - LHR
1 stop12h 30mAir Canada
Thu 29/814:05LHR - STL
1 stop13h 00mAir Canada
Deal found 20/6£609
Tue 10/909:50STL - LHR
1 stop14h 40mAir Canada
Tue 17/909:30LHR - STL
2 stops16h 30mAir Canada
Deal found 20/6£613
Wed 18/909:50STL - LHR
1 stop14h 40mAir Canada
Tue 24/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 20/6£629
Tue 13/812:00STL - LHR
1 stop12h 30mAir Canada
Fri 23/812:05LHR - STL
1 stop13h 56mAir Canada
Deal found 20/6£641
Sat 29/609:50STL - LHR
2 stops29h 10mAir Canada
Thu 11/712:05LHR - STL
1 stop13h 56mAir Canada
Deal found 20/6£1,184
Wed 26/611:00STL - LHR
1 stop15h 35mAir Canada
Sun 30/608:30LHR - STL
1 stop12h 51mAir Canada
Deal found 20/6£1,362

Cheap St. Louis to London flights in June & July 2024

Find cheap flight options from St. Louis to London specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 937,175 searches. Prices were last updated on 21 June 2024.
The lowest fares we've come across on flights travelling from St. Louis to London in June and July 2024. Check back soon for alternative fares.
Sat 27/711:34STL - LGW
1 stop16h 26mMultiple Airlines
Sun 18/814:00LGW - STL
1 stop23h 22mMultiple Airlines
Deal found 20/6£654
Thu 11/720:49STL - LGW
1 stop31h 11mMultiple Airlines
Fri 19/714:00LGW - STL
1 stop26h 34mMultiple Airlines
Deal found 20/6£682
Sat 27/718:09STL - LHR
1 stop30h 26mBritish Airways
Sun 18/821:15LHR - STL
2 stops29h 44mBritish Airways
Deal found 20/6£694
Wed 17/719:33STL - LGW
1 stop32h 27mMultiple Airlines
Wed 24/714:00LGW - STL
1 stop24h 43mMultiple Airlines
Deal found 20/6£716
Mon 29/719:33STL - LGW
1 stop32h 27mMultiple Airlines
Fri 2/814:00LGW - STL
1 stop26h 34mMultiple Airlines
Deal found 20/6£743
Sat 27/718:19STL - LGW
3 stops35h 26mMultiple Airlines
Sun 18/814:00LGW - STL
1 stop23h 22mMultiple Airlines
Deal found 20/6£744
Thu 18/719:33STL - LGW
1 stop32h 27mMultiple Airlines
Thu 25/714:00LGW - STL
1 stop24h 36mMultiple Airlines
Deal found 20/6£757
Wed 24/711:28STL - LHR
1 stop13h 17mVirgin Atlantic
Wed 31/709:20LHR - STL
1 stop13h 26mVirgin Atlantic
Deal found 20/6£758
Sat 20/719:33STL - LGW
1 stop32h 27mMultiple Airlines
Sat 27/720:40LGW - STL
2 stops26h 49mMultiple Airlines
Deal found 20/6£759

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 937,175 searches. Data last updated 21 June 2024.
The lowest fares we've come across on flights travelling from St. Louis to London in June and July 2024. Check back soon for alternative fares.
Wed 2/1007:57STL - LGW
1 stop20h 03mMultiple Airlines
Mon 7/1014:00LGW - STL
1 stop23h 07mMultiple Airlines
Deal found 19/6£437
Mon 23/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Tue 24/914:00LGW - STL
1 stop23h 07mMultiple Airlines
Deal found 20/6£453
Tue 24/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Wed 25/914:00LGW - STL
1 stop23h 07mMultiple Airlines
Deal found 19/6£479
Tue 22/1007:57STL - LGW
1 stop20h 03mMultiple Airlines
Tue 5/1112:00LGW - STL
1 stop31h 04mMultiple Airlines
Deal found 20/6£522
Mon 16/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Wed 25/914:00LGW - STL
1 stop23h 02mMultiple Airlines
Deal found 20/6£532
Mon 9/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Fri 20/914:00LGW - STL
1 stop23h 07mMultiple Airlines
Deal found 20/6£536
Thu 12/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Wed 18/914:00LGW - STL
1 stop23h 07mMultiple Airlines
Deal found 20/6£539
Tue 13/811:26STL - LGW
1 stop16h 34mMultiple Airlines
Wed 21/814:00LGW - STL
1 stop23h 22mMultiple Airlines
Deal found 20/6£544
Mon 9/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Fri 20/914:00LGW - STL
2 stops32h 20mMultiple Airlines
Deal found 20/6£548

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 937,175 searches. Data last updated 21 June 2024.
Check out these flights departing soon from St. Louis to London. It's wise to confirm all flight details are correct before booking.
Mon 1/719:29STL - LGW
1 stop32h 31mMultiple Airlines
Mon 8/714:00LGW - STL
1 stop26h 57mMultiple Airlines
Deal found 20/6£804
Wed 26/611:00STL - LGW
2 stops16h 00mMultiple Airlines
Fri 5/720:40LGW - STL
2 stops26h 48mMultiple Airlines
Deal found 20/6£892
Mon 1/714:41STL - LGW
3 stops24h 19mMultiple Airlines
Mon 8/714:00LGW - STL
2 stops30h 23mMultiple Airlines
Deal found 20/6£894
Mon 1/719:29STL - LGW
2 stops29h 51mMultiple Airlines
Mon 8/714:00LGW - STL
1 stop26h 57mMultiple Airlines
Deal found 20/6£905
Wed 26/613:55STL - LGW
3 stops23h 40mMultiple Airlines
Fri 5/720:40LGW - STL
2 stops26h 48mMultiple Airlines
Deal found 20/6£920
Mon 1/714:41STL - LGW
3 stops24h 19mMultiple Airlines
Mon 8/712:50LGW - STL
3 stops31h 33mMultiple Airlines
Deal found 20/6£1,084
Wed 26/613:55STL - LGW
2 stops39h 00mMultiple Airlines
Fri 5/714:00LGW - STL
1 stop26h 34mMultiple Airlines
Deal found 20/6£1,105
Sat 29/617:30STL - LHR
1 stop30h 25mMultiple Airlines
Thu 11/718:00LHR - STL
1 stop32h 01mMultiple Airlines
Deal found 20/6£1,180
Sat 29/609:50STL - LHR
2 stops29h 10mAir Canada
Thu 11/712:05LHR - STL
1 stop13h 56mAir Canada
Deal found 20/6£1,184

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 937,175 searches. Data last updated 21 June 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.
Mon 30/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Deal found 19/6£166
Fri 4/1018:42STL - LGW
1 stop33h 18mMultiple Airlines
Deal found 20/6£203
Wed 10/719:33STL - LGW
1 stop32h 27mMultiple Airlines
Deal found 20/6£208
Tue 10/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Deal found 19/6£222
Sun 15/918:42STL - LGW
1 stop33h 18mMultiple Airlines
Deal found 20/6£228
Fri 4/1018:00STL - LGW
2 stops34h 00mMultiple Airlines
Deal found 20/6£238
Tue 10/917:20STL - LGW
2 stops34h 40mMultiple Airlines
Deal found 19/6£240
Wed 10/719:33STL - LGW
1 stop32h 27mMultiple Airlines
Deal found 20/6£244
Wed 11/907:57STL - LGW
1 stop20h 03mMultiple Airlines
Deal found 20/6£258

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 937,175 searches. Data last updated 21 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£437 - £737

Route

Depart

Return

Price

Lambert-St LouisLondon Gatwick

STL - LGW

STLLGW

Lambert-St Louis

Wed 2/10

1 stop20h 03m

London Gatwick

Mon 7/10

1 stop23h 07m

£437

Lambert-St LouisLondon Gatwick

STL - LGW

STLLGW

Lambert-St Louis

Wed 25/9

2 stops15h 11m

London Gatwick

Wed 2/10

2 stops17h 39m

£567

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 25/9

1 stop16h 25m

London Heathrow

Wed 2/10

2 stops14h 35m

£567

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 25/9

1 stop12h 45m

London Heathrow

Tue 8/10

2 stops26h 48m

£579

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 24/9

1 stop18h 10m

London Heathrow

Tue 1/10

1 stop17h 35m

£581

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 13/8

1 stop12h 46m

London Heathrow

Fri 23/8

2 stops17h 32m

£634

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Fri 16/8

1 stop10h 10m

London Heathrow

Thu 29/8

1 stop11h 27m

£667

Lambert-St LouisLondon City

STL - LCY

STLLCY

Lambert-St Louis

Wed 25/9

2 stops16h 50m

London City

Wed 2/10

2 stops19h 47m

£672

Lambert-St LouisLondon Gatwick

STL - LGW

STLLGW

Lambert-St Louis

Wed 2/10

2 stops17h 49m

London Gatwick

Mon 7/10

2 stops39h 31m

£737

Flights are sorted by cheapest first

Deals found on 19/6

How far ahead should I 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 14 June 2024.
Booking 9 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

What is the cheapest day 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 16 June 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their St. Louis to London flight should consider departing on Wednesday at midday when fares are most often at their lowest. Tuesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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

Have a flexible travel schedule? Discover the best time to fly to London from St. Louis 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.

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

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 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 21 June 2024.
Read through reviews of airlines operating flights from St. Louis to London, such as United Airlines, Air Canada and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
10,000 reviews

Overall

8.0

Food

7.4

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.0
Very Good
10,000 reviews
8.0
Very Good
10,000 reviews

Overall

8.0

Food

7.4

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.9
Good
1,437 reviews
8.0
Very Good
10,000 reviews

Overall

8.0

Food

7.4

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.7
Good
1,353 reviews
8.0
Very Good
10,000 reviews

Overall

8.0

Food

7.4

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.6
Good
714 reviews
8.0
Very Good
10,000 reviews

Overall

8.0

Food

7.4

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.5
Good
1,666 reviews
8.0
Very Good
10,000 reviews

Overall

8.0

Food

7.4

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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 £437, but on average you can expect to pay £545.

  • Are there last-minute flights available from St. Louis to London for under £900?

    There are currently 20+ open flights from St. Louis to London within the next 7 days for less than £900.

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

    Delta, at £567, was found to be the cheapest airline from St. Louis to London.Alternate airlines flying return to your destination include American Airlines and United Airlines. Users have found that Delta is 22% cheaper than the other options available to this destination.

  • What are the most popular routes 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 20/6.

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

  • What is the cheapest month to book a flight from St. Louis to London?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to London (average of £110). Flying from St. Louis to London in July is currently the most expensive (average of £162). 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.

See more FAQs

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