HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis (STL) to London (LON) from $325

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 6/22. 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
May 25 — Jun 11
From?
To?
Sat 5/25
Sat 6/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

The best prices from Lambert-St Louis to London are usually found in February or April, booked 9 days in advance, depart on a Wednesday or Thursday 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 May 20, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$643

One-way from

$535
High demand for flights, 38% potential price rise
Search Deals
Best time to find cheap flights, 23% potential price drop
Search Deals
From Lambert-St Louis to London (LON)
Search Deals
One-way flight from Lambert-St Louis to London (LON)
Search Deals

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

Saturday 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?

Travelers have found it’s best to book a flight 10 days in advance to save up to 13% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 10 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to London 1-2 weeks in advance for as low as $586, or $938 for flights within the next 24 hours.

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

Flights from St. Louis to London lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to London in February, with the cheapest ticket starting at $622.

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 afternoon. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the evening.

Cheap American Airlines flights from St. Louis to London

Explore cheap flight options specifically provided by American 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 2,621,518 searches. Data last updated May 20, 2024.
Peruse some of the lowest-priced American Airlines flights we've found from St. Louis to London. Deals update often to give you more flight options matching your criteria
Mon 7/153:18 pmSTL - LHR
1 stop11h 47mAmerican Airlines
Thu 8/2912:15 pmLHR - STL
1 stop13h 05mAmerican Airlines
Deal found 5/19$677
Tue 7/165:46 pmSTL - LHR
1 stop12h 24mAmerican Airlines
Wed 7/3112:15 pmLHR - STL
1 stop17h 39mAmerican Airlines
Deal found 5/19$961
Sun 6/23:00 pmSTL - LHR
1 stop12h 00mAmerican Airlines
Wed 6/129:15 amLHR - STL
1 stop16h 14mAmerican Airlines
Deal found 5/19$962
Thu 6/133:27 pmSTL - LHR
1 stop11h 38mAmerican Airlines
Thu 6/2012:15 pmLHR - STL
1 stop17h 48mAmerican Airlines
Deal found 5/19$1,011
Mon 7/84:52 pmSTL - LHR
1 stop11h 38mAmerican Airlines
Sun 7/2112:15 pmLHR - STL
1 stop17h 39mAmerican Airlines
Deal found 5/19$1,012
Tue 6/113:27 pmSTL - LHR
1 stop11h 38mAmerican Airlines
Wed 7/3112:15 pmLHR - STL
1 stop17h 39mAmerican Airlines
Deal found 5/19$1,168
Sat 5/255:55 amSTL - LHR
1 stop10h 15mAmerican Airlines
Tue 5/289:15 amLHR - STL
1 stop16h 15mAmerican Airlines
Deal found 5/17$1,257
Thu 5/2310:46 amSTL - LHR
1 stop14h 44mAmerican Airlines
Mon 5/279:15 amLHR - STL
1 stop12h 13mAmerican Airlines
Deal found 5/18$1,306
Sat 5/255:55 amSTL - LHR
1 stop10h 15mAmerican Airlines
Mon 5/279:15 amLHR - STL
1 stop12h 13mAmerican Airlines
Deal found 5/17$1,307

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 2,621,518 searches. Data last updated May 20, 2024.
To aid your search, here are some of the cheapest United Airlines flights we've found from St. Louis to London. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Wed 10/166:30 amSTL - LHR
1 stop23h 15mUnited Airlines
Wed 10/309:00 amLHR - STL
2 stops29h 53mUnited Airlines
Deal found 5/20$735
Tue 9/173:35 pmSTL - LHR
1 stop11h 25mUnited Airlines
Tue 9/242:05 pmLHR - STL
2 stops28h 17mUnited Airlines
Deal found 5/19$737
Tue 9/106:34 amSTL - LHR
1 stop23h 11mUnited Airlines
Tue 9/172:05 pmLHR - STL
1 stop31h 15mUnited Airlines
Deal found 5/19$738
Mon 5/205:25 pmSTL - LHR
1 stop12h 20mUnited Airlines
Wed 5/299:30 amLHR - STL
1 stop17h 35mUnited Airlines
Deal found 5/18$747
Sat 8/315:20 pmSTL - LHR
2 stops31h 25mUnited Airlines
Tue 9/107:25 amLHR - STL
2 stops15h 46mUnited Airlines
Deal found 5/19$751
Tue 5/2111:10 amSTL - LHR
2 stops17h 30mUnited Airlines
Thu 5/306:50 amLHR - STL
2 stops14h 51mUnited Airlines
Deal found 5/18$753
Wed 9/256:34 amSTL - LHR
1 stop19h 56mUnited Airlines
Tue 10/19:30 amLHR - STL
1 stop34h 00mUnited Airlines
Deal found 5/19$762
Sat 6/15:25 pmSTL - LHR
1 stop10h 45mUnited Airlines
Wed 6/126:50 amLHR - STL
2 stops20h 54mUnited Airlines
Deal found 5/18$1,005
Sat 6/15:25 pmSTL - LHR
1 stop10h 45mUnited Airlines
Sun 6/96:50 amLHR - STL
2 stops20h 54mUnited Airlines
Deal found 5/18$1,055

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

Find cheap flight options from St. Louis to London specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,621,518 searches. Prices were last updated on May 20, 2024.
These are some of the best deals we've found on flights to London in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mAir Canada
Thu 5/309:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 5/19$742
Tue 5/2112:20 pmSTL - LHR
1 stop14h 00mUnited Airlines
Thu 5/306:50 amLHR - STL
2 stops14h 51mUnited Airlines
Deal found 5/19$748
Tue 6/1811:57 amSTL - LGW
1 stop16h 03mMultiple Airlines
Mon 6/242:00 pmLGW - STL
1 stop26h 57mMultiple Airlines
Deal found 5/19$750
Tue 5/2111:10 amSTL - LHR
2 stops14h 05mUnited Airlines
Thu 5/306:50 amLHR - STL
2 stops14h 51mUnited Airlines
Deal found 5/19$753
Tue 5/212:18 pmSTL - LHR
2 stops15h 57mDelta
Tue 5/2811:30 amLHR - STL
2 stops18h 10mDelta
Deal found 5/19$754
Sun 6/237:44 pmSTL - LGW
1 stop32h 16mMultiple Airlines
Tue 6/252:00 pmLGW - STL
1 stop23h 25mMultiple Airlines
Deal found 5/19$796
Tue 6/187:44 pmSTL - LGW
1 stop32h 16mMultiple Airlines
Tue 6/252:00 pmLGW - STL
1 stop23h 25mMultiple Airlines
Deal found 5/19$798
Tue 6/187:44 pmSTL - LGW
1 stop32h 16mMultiple Airlines
Mon 6/242:00 pmLGW - STL
2 stops30h 47mMultiple Airlines
Deal found 5/19$817
Tue 5/282:18 pmSTL - LHR
1 stop10h 27mDelta
Tue 6/411:30 amLHR - STL
2 stops16h 22mDelta
Deal found 5/19$820

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 2,621,518 searches. Data last updated May 20, 2024.
These are some of the best deals we've found on flights to London in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Tue 9/242:35 pmSTL - LGW
1 stop13h 25mMultiple Airlines
Wed 10/22:00 pmLGW - STL
1 stop14h 14mMultiple Airlines
Deal found 5/19$612
Tue 9/172:35 pmSTL - LGW
1 stop13h 25mMultiple Airlines
Tue 9/2412:00 pmLGW - STL
1 stop28h 46mMultiple Airlines
Deal found 5/19$613
Wed 9/184:31 pmSTL - LGW
1 stop35h 29mMultiple Airlines
Wed 9/252:00 pmLGW - STL
1 stop14h 14mMultiple Airlines
Deal found 5/18$629
Sun 9/226:00 amSTL - LHR
2 stops28h 00mMultiple Airlines
Wed 10/26:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/19$644
Sun 9/226:00 amSTL - LHR
2 stops29h 40mMultiple Airlines
Mon 10/76:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/19$674
Mon 7/153:18 pmSTL - LHR
1 stop11h 47mAmerican Airlines
Thu 8/2912:15 pmLHR - STL
1 stop13h 05mAmerican Airlines
Deal found 5/19$677
Wed 9/1810:10 amSTL - LHR
2 stops25h 30mMultiple Airlines
Tue 9/246:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/19$679
Tue 9/1710:00 amSTL - LHR
2 stops25h 40mMultiple Airlines
Tue 9/246:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/19$686
Tue 9/242:35 pmSTL - LGW
1 stop13h 25mMultiple Airlines
Mon 10/72:00 pmLGW - STL
1 stop14h 14mMultiple Airlines
Deal found 5/19$691

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 2,621,518 searches. Data last updated May 20, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to London. Tip: verify your flight details before completing your reservation.
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mAir Canada
Tue 5/289:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 5/18$742
Mon 5/205:25 pmSTL - LHR
1 stop12h 20mUnited Airlines
Wed 5/299:30 amLHR - STL
1 stop17h 35mUnited Airlines
Deal found 5/18$747
Mon 5/209:50 amSTL - LHR
2 stops14h 40mAir Canada
Wed 5/292:05 pmLHR - STL
1 stop13h 00mAir Canada
Deal found 5/18$748
Tue 5/2110:20 amSTL - LHR
1 stop14h 55mDelta
Tue 5/286:15 amLHR - STL
2 stops18h 26mDelta
Deal found 5/18$749
Tue 5/2111:10 amSTL - LHR
2 stops17h 30mUnited Airlines
Thu 5/306:50 amLHR - STL
2 stops14h 51mUnited Airlines
Deal found 5/18$753
Tue 5/212:18 pmSTL - LHR
2 stops15h 57mDelta
Tue 5/286:15 amLHR - STL
2 stops18h 26mDelta
Deal found 5/18$754
Mon 5/205:55 amSTL - LHR
1 stop10h 15mBritish Airways
Fri 5/3110:05 amLHR - STL
1 stop12h 12mBritish Airways
Deal found 5/18$757
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mAir Canada
Sat 6/19:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 5/18$792
Mon 5/209:50 amSTL - LHR
2 stops14h 40mAir Canada
Sat 6/19:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 5/18$798

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 2,621,518 searches. Data last updated May 20, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to London. Those needing a return flight from St. Louis to London can use the search form above.
Sat 6/2211:34 amSTL - LGW
1 stop16h 26mMultiple Airlines
Deal found 5/19$325
Tue 9/1710:34 amSTL - LHR
3 stops19h 21mMultiple Airlines
Deal found 5/18$335
Thu 6/208:12 pmSTL - LGW
1 stop31h 48mMultiple Airlines
Deal found 5/19$346
Sat 6/2211:34 amSTL - LGW
1 stop16h 26mMultiple Airlines
Deal found 5/19$361
Sun 7/146:41 pmSTL - STN
3 stops33h 59mMultiple Airlines
Deal found 5/18$407
Fri 7/127:33 pmSTL - LGW
1 stop32h 27mMultiple Airlines
Deal found 5/19$426
Fri 7/125:25 pmSTL - STN
3 stops35h 15mMultiple Airlines
Deal found 5/19$445
Tue 6/2511:57 amSTL - LGW
1 stop16h 03mMultiple Airlines
Deal found 5/19$451
Sat 6/223:08 pmSTL - LGW
2 stops36h 52mMultiple Airlines
Deal found 5/19$454

Find flights from St. Louis to London within your budget

Customize 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 2,621,518 searches. Data last updated May 20, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$644 - $831

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 9/22

2 stops28h 00m

London Heathrow

Wed 10/2

2 stops22h 55m

$644

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 7/15

1 stop11h 47m

London Heathrow

Thu 8/29

1 stop13h 05m

$677

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/16

1 stop23h 15m

London Heathrow

Wed 10/30

2 stops29h 53m

$735

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 9/22

1 stop12h 30m

London Heathrow

Thu 10/3

1 stop17h 35m

$736

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 9/23

1 stop15h 50m

London Heathrow

Thu 10/3

2 stops16h 21m

$746

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sat 8/10

1 stop10h 37m

London Heathrow

Sat 8/31

1 stop12h 33m

$752

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/18

1 stop11h 30m

London Heathrow

Tue 9/24

1 stop24h 00m

$784

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/28

1 stop14h 10m

London Heathrow

Thu 9/12

1 stop12h 44m

$824

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 7/10

1 stop19h 09m

London Heathrow

Wed 7/24

2 stops15h 46m

$831

Flights are sorted by cheapest first

Deals found on 5/19

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 round-trip flight from St. Louis to London. Price data was last updated on May 10, 2024.
The best time to book flights from St. Louis to London is 9 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to London. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to London flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon 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 $394 while a round-trip flight costs $748. Price data was last updated on May 12, 2024.

Currently, November is the cheapest month in which you can book a flight from St. Louis to London (average of $653). Flying from St. Louis to London in June is currently the most expensive (average of $1,150). 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

$673

February

$662

March

$715

April

$692

May

$733

June

$1,150

July

$976

August

$775

September

$745

October

$708

November

$653

December

$672

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

39.2 - 62.6 °F

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 May 20, 2024.
Read reviews from past customers who have flown American Airlines, United Airlines and Air Canada from St. Louis to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,635 reviews
Check prices

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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.

Delta
8.0
Very good
10,635 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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.

KLM
7.9
Good
1,558 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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.

Finnair
7.8
Good
1,373 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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.

Virgin Atlantic
7.7
Good
733 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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.

Air France
7.6
Good
1,761 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

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?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to London. You should not have trouble finding flights to London from Lambert-St Louis; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 11 airlines have flights from the St. Louis airport to London. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • Can I find flights from St. Louis to London for under $700 on Cheapflights?

    Yes, there are multiple flights from St. Louis to London for under $700. The cheapest flight booked recently is on Multiple Airlines for just $644, but on average you can expect to pay $718.

  • Are there last-minute flights available from St. Louis to London for under $800?

    There are currently 20+ open flights from St. Louis to London within the next 7 days for less than $800.

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

    According to our current data, American Airlines ($677), United Airlines ($735), and Air Canada ($736) offers the cheapest pricing from St. Louis to London. These flights start at 27% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to London one-way?

    The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as $535. However, be on the lookout for offers from Finnair and Air Canada, as they are both options that can get you from St. Louis to London for a low price.

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

    The most popular flight routes from St. Louis to London are Lambert-St Louis - London Heathrow, Lambert-St Louis - London Gatwick and Lambert-St Louis - London City.

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

    When booking a flight from St. Louis to London, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

  • What does STL to LHR mean?

    Lambert-St Louis Airport is STL and London Heathrow Airport is LHR. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.

  • Where are the most common layover locations when flying from St. Louis to London?

    Flights departing from St. Louis and landing in London layover in Chicago most frequently.

  • What are some popular things to do or see while on a layover in Chicago?

    Chicago travelers tend to visit Grant Park, Magnificent Mile, and Wrigley Field more than anywhere else. Grant Park, Magnificent Mile, and Wrigley Field are located about 16.2 mi, 15.5 mi, and 13.0 mi, respectively from Chicago O'Hare Intl. Travelers can rent a car at Chicago O'Hare Intl for an average daily rate of $55 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for St. Louis to London flights?

    Flights departing from St. Louis and landing in London layover in Detroit least frequently.

  • 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 vacation 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 5/19.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to London
See prices for flight routes from nearby airports that may be better suited for you.

St. Louis to Heathrow flights
Kansas City to Heathrow flights
Kansas City to Gatwick flights
St. Louis to Gatwick flights
St. Louis to London City flights
Springfield to Heathrow flights
St. Louis to Edinburgh flights
Kansas City to London City flights
Kansas City to Edinburgh flights
Kansas City to Manchester flights
St. Louis to Manchester flights
Springfield to Gatwick flights
St. Louis to Luton flights
Columbia to Heathrow flights
Springfield to London City flights
St. Louis to Stansted flights
Kansas City to Liverpool flights
Kansas City to Birmingham flights
St. Louis to Leeds flights
Springfield to Edinburgh flights
St. Louis to Birmingham flights
Kansas City to Leeds flights
Joplin to Heathrow flights
Kansas City to Bristol flights
Kansas City to Stansted flights
Kansas City to Newcastle upon Tyne flights
Kansas City to Grimsby flights
Joplin to Edinburgh flights

Top 10 airlines flying from St. Louis to London

Discover the top 10 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 2,621,518 searches. Data last updated May 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$587Average$863FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest$620Average$781FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest$635Average$1,044FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest$643Average$840FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest$652Average$869FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest$654Average$793FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest$656Average$1,259FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
DeltaCheapest$660Average$858FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest$688Average$885FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest$699Average$1,093FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Miami to Orlando flights
New York to Mumbai flights
Chicago to Cancún flights
Denver to Cancún flights
New York to Beijing flights
San Diego to Los Angeles flights
New York to Greece flights
Las Vegas to New York flights
Chicago to New Delhi flights
USA to Switzerland flights
Dallas to Atlanta flights
St. Louis to Lagos 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.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from St. Louis today with Cheapflights!

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?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to London, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on St. Louis to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines