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

Delta, at £533, was found to be the cheapest airline from St. Louis to London.Alternate airlines flying return to your destination include KLM and Air Canada. Users have found that Delta is 23% cheaper than the other options available to this destination.

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

The cheapet airlines for a one-way flight from St. Louis to London are Air Canada (£337), United Airlines (£341), and Iberia (£350).

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

Travellers seeking maximum savings on their St. Louis to London flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

While some choose either Lambert-St Louis - London Gatwick or Lambert-St Louis - London City, Lambert-St Louis - London Heathrow is the most popular route from St. Louis to London.

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

American Airlines, Air Canada and British Airways are the most popular airlines when flying from St. Louis to London.

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 26% on this flight, we recommend booking at least 27 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 £640 1-2 weeks out and tickets from £640 for flights departing within the next 72 hours.

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

April is one of the best times of the year to fly to London from St. Louis. Prices for April average £694 per person but you can even find prices for as low as £505. The most expensive prices can be found in the month of June. Opting for a April flight can save you 29% on your journey compared to booking in June

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 5 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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.

£270+ Flights from St. Louis to London

Cheapflights Tip: The best prices from Lambert-St Louis to London are usually found in April or November, booked 26 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to London

Round-trip from	£533
One-way from	£270
Popular in	June
Cheapest in	April
Average price	£586

Delta
14/5-21/5
3 total stops
28h 00m total
St. Louis to London

Search Deals

12/9
3 total stops
28h 46m total
St. Louis to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£96 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from St. Louis to London

Cheapest flights from St. Louis to London
Explore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Tue 14/1009:15STL - LHR

2 stops15h 15mAir Canada

Wed 22/1014:05LHR - STL

2 stops31h 11mAir Canada

Deal found 14/4£532

Wed 14/515:40STL - LHR

1 stop13h 30mDelta

Wed 21/506:30LHR - STL

2 stops14h 30mDelta

Deal found 15/4£533

Tue 29/417:41STL - LGW

1 stop34h 19mMultiple Airlines

Fri 2/514:00LGW - STL

1 stop16h 14mMultiple Airlines

Deal found 15/4£533

Tue 19/811:51STL - LHR

1 stop12h 54mKLM

Thu 28/813:05LHR - STL

1 stop13h 42mKLM

Deal found 14/4£541

Tue 13/513:30STL - STN

3 stops25h 45mMultiple Airlines

Tue 20/516:40STN - STL

3 stops33h 18mMultiple Airlines

Deal found 15/4£544

Fri 9/513:30STL - LHR

1 stop14h 30mMultiple Airlines

Tue 13/510:30LHR - STL

2 stops15h 28mMultiple Airlines

Deal found 15/4£545

Wed 14/515:40STL - LHR

2 stops13h 45mVirgin Atlantic

Tue 17/609:20LHR - STL

1 stop12h 58mVirgin Atlantic

Deal found 14/4£550

Mon 4/813:30STL - LHR

1 stop14h 30mUnited Airlines

Thu 14/809:30LHR - STL

1 stop16h 30mUnited Airlines

Deal found 15/4£551

Thu 14/813:22STL - LHR

1 stop11h 58mIberia

Wed 20/814:25LHR - STL

1 stop11h 58mIberia

Deal found 14/4£552

Thu 7/811:51STL - LGW

2 stops16h 09mDelta

Thu 14/812:00LGW - STL

2 stops17h 01mDelta

Deal found 15/4£553

Mon 11/813:22STL - LHR

1 stop16h 53mBritish Airways

Mon 18/820:00LHR - STL

2 stops30h 23mBritish Airways

Deal found 14/4£561

Wed 6/808:26STL - LCY

2 stops27h 59mBritish Airways

Wed 13/819:05LCY - STL

2 stops29h 16mBritish Airways

Deal found 15/4£565

Best flights from St. Louis to London
Discover carefully curated flight deals from St. Louis to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 April 2025.

Wed 14/515:40STL - LHR

1 stop13h 30mDelta

Wed 21/506:30LHR - STL

2 stops14h 30mDelta

Deal found 15/4£533

Tue 29/417:41STL - LGW

1 stop34h 19mMultiple Airlines

Fri 2/514:00LGW - STL

1 stop16h 14mMultiple Airlines

Deal found 15/4£533

Tue 19/811:51STL - LHR

1 stop12h 54mKLM

Thu 28/813:05LHR - STL

1 stop13h 42mKLM

Deal found 14/4£541

Wed 20/813:30STL - LHR

2 stops13h 05mAir Canada

Thu 28/809:30LHR - STL

1 stop16h 30mAir Canada

Deal found 14/4£548

Wed 14/515:40STL - LHR

2 stops13h 45mVirgin Atlantic

Tue 17/609:20LHR - STL

1 stop12h 58mVirgin Atlantic

Deal found 14/4£550

Mon 4/813:30STL - LHR

1 stop14h 30mUnited Airlines

Wed 13/809:30LHR - STL

1 stop16h 30mUnited Airlines

Deal found 15/4£551

Thu 14/813:22STL - LHR

1 stop11h 58mIberia

Wed 20/814:25LHR - STL

1 stop11h 58mIberia

Deal found 14/4£552

Mon 11/813:22STL - LHR

1 stop16h 53mBritish Airways

Mon 18/820:00LHR - STL

2 stops30h 23mBritish Airways

Deal found 14/4£561

Tue 9/917:30STL - LCY

2 stops19h 05mLufthansa

Tue 23/908:45LCY - STL

2 stops16h 54mLufthansa

Deal found 15/4£576

Mon 25/815:30STL - LHR

2 stops24h 10mScandinavian Airlines

Thu 4/907:05LHR - STL

3 stops22h 34mScandinavian Airlines

Deal found 14/4£682

Fri 4/712:50STL - LGW

2 stops15h 50mAmerican Airlines

Fri 11/710:40LGW - STL

2 stops19h 09mAmerican Airlines

Deal found 15/4£775

Mon 28/415:40STL - LGW

2 stops24h 40mTurkish Airlines

Mon 5/514:00LGW - STL

2 stops30h 47mTurkish Airlines

Deal found 15/4£1,080

Last-minute flights from St. Louis to London
Discover last-minute flight deals from St. Louis to London. Data last updated 15 April 2025 and is based on user searches.

Sun 20/413:46STL - LHR

2 stops14h 59mDelta

Sun 27/406:30LHR - STL

2 stops16h 17mDelta

Deal found 14/4£751

Wed 23/408:48STL - LHR

1 stop21h 32mUnited Airlines

Sun 27/406:30LHR - STL

1 stop13h 00mUnited Airlines

Deal found 14/4£557

Wed 23/409:18STL - LGW

2 stops17h 17mAmerican Airlines

Wed 30/410:40LGW - STL

2 stops17h 32mAmerican Airlines

Deal found 15/4£566

Wed 23/418:58STL - LGW

2 stops33h 02mMultiple Airlines

Wed 30/414:00LGW - STL

1 stop16h 04mMultiple Airlines

Deal found 15/4£626

Wed 23/415:44STL - LCY

2 stops38h 11mBritish Airways

Sun 27/419:00LCY - STL

2 stops31h 58mBritish Airways

Deal found 15/4£829

Wed 23/415:40STL - LGW

2 stops24h 40mTurkish Airlines

Sun 27/417:15LGW - STL

2 stops51h 27mTurkish Airlines

Deal found 14/4£1,665

Sat 26/415:30STL - LHR

2 stops33h 00mAir Canada

Sun 4/509:30LHR - STL

1 stop16h 28mAir Canada

Deal found 14/4£567

Tue 29/417:41STL - LGW

1 stop34h 19mMultiple Airlines

Fri 2/514:00LGW - STL

1 stop16h 14mMultiple Airlines

Deal found 15/4£533

Fri 2/515:29STL - LHR

1 stop9h 51mBritish Airways

Sun 11/509:15LHR - STL

1 stop12h 12mBritish Airways

Deal found 14/4£598

Tue 6/510:36STL - LCY

2 stops17h 34mBritish Airways

Wed 14/519:05LCY - STL

2 stops29h 16mBritish Airways

Deal found 15/4£573

Fri 9/513:30STL - LHR

1 stop14h 30mMultiple Airlines

Tue 13/510:30LHR - STL

2 stops15h 28mMultiple Airlines

Deal found 15/4£545

Mon 12/513:30STL - LHR

1 stop14h 30mUnited Airlines

Fri 23/506:30LHR - STL

1 stop13h 00mUnited Airlines

Deal found 14/4£538

One-way flights from St. Louis to London
Search for one-way flight options from St. Louis to London. Find affordable one-way fares based on user searches. Data last updated 15 April 2025.

Fri 12/908:44STL - LGW

3 stops28h 46mMultiple Airlines

Deal found 14/4£270

Tue 27/514:40STL - STN

3 stops59h 05mMultiple Airlines

Deal found 13/4£279

Tue 27/514:40STL - LHR

3 stops49h 50mMultiple Airlines

Deal found 13/4£305

Sun 25/517:45STL - LTN

3 stops40h 15mMultiple Airlines

Deal found 13/4£313

Wed 3/913:30STL - LHR

2 stops13h 05mAir Canada

Deal found 14/4£337

Tue 2/911:19STL - LHR

1 stop13h 56mUnited Airlines

Deal found 14/4£341

Wed 14/519:30STL - LHR

1 stop10h 45mIberia

Deal found 14/4£350

Mon 19/506:00STL - LHR

2 stops23h 10mAer Lingus

Deal found 14/4£352

Wed 3/911:51STL - LGW

2 stops16h 09mDelta

Deal found 14/4£362

Wed 14/515:43STL - LCY

2 stops14h 47mUnited Airlines

Deal found 15/4£389

Thu 11/913:30STL - LCY

2 stops14h 00mDelta

Deal found 15/4£421

Mon 26/514:25STL - LCY

3 stops48h 25mMultiple Airlines

Deal found 15/4£437

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 14/5

15:40-11:10

1 stop13h 30m

London Heathrow

Wed 21/5

06:30-15:00

2 stops14h 30m

£533

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Tue 29/4

17:41-10:00

1 stop34h 19m

London Gatwick

Fri 2/5

14:00-00:14

1 stop16h 14m

£533

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 19/8

11:51-06:45

1 stop12h 54m

London Heathrow

Thu 28/8

13:05-20:47

1 stop13h 42m

£541

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Tue 13/5

13:30-21:15

3 stops25h 45m

London Stansted

Tue 20/5

16:40-19:58

3 stops33h 18m

£544

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 9/5

13:30-10:00

1 stop14h 30m

London Heathrow

Tue 13/5

10:30-19:58

2 stops15h 28m

£545

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 20/8

13:30-08:35

2 stops13h 05m

London Heathrow

Thu 28/8

09:30-20:00

1 stop16h 30m

£548

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 14/5

15:40-11:25

2 stops13h 45m

London Heathrow

Tue 17/6

09:20-16:18

1 stop12h 58m

£550

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 4/8

13:30-10:00

1 stop14h 30m

London Heathrow

Wed 13/8

09:30-20:00

1 stop16h 30m

£551

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 14/8

13:22-07:20

1 stop11h 58m

London Heathrow

Wed 20/8

14:25-20:23

1 stop11h 58m

£552

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Thu 7/8

11:51-10:00

2 stops16h 09m

London Gatwick

Thu 14/8

12:00-23:01

2 stops17h 01m

£553

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 41 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to London

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

Booking 26 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.

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 £112). Flying from St. Louis to London in August is currently the most expensive (average of £164). 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.

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 45% on the cost of your flight, compared to a flight in the evening.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

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

Read through reviews of airlines operating flights from St. Louis to London, such as Delta, KLM and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,917 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,323 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,658 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Turkish Airlines

7.3

Good

3,760 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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 5 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
What are the cheapest airlines flying from St. Louis to London round-trip?
Delta, at £533, was found to be the cheapest airline from St. Louis to London.Alternate airlines flying return to your destination include KLM and Air Canada. Users have found that Delta is 23% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from St. Louis to London one-way?
The cheapet airlines for a one-way flight from St. Louis to London are Air Canada (£337), United Airlines (£341), and Iberia (£350).
What are the most popular routes from St. Louis to London?
While some choose either Lambert-St Louis - London Gatwick or Lambert-St Louis - London City, Lambert-St Louis - London Heathrow is the most popular route from St. Louis to London.
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.
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 £112). Flying from St. Louis to London in August is currently the most expensive (average of £164). 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

Hounslow

Deal

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Wembley

Hayes

Crawley

Southend-on-Sea

Maidstone

Ipswich

Southall

Ilford

Winchester

Folkestone

Dartford

Watford

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from St. Louis to London

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest£506	Average£671	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest£507	Average£746	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£532	Average£835	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£538	Average£811	FlexibilityNo cancel fee	On-time75%	Search KLM flights
American Airlines	Cheapest£593	Average£1,012	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

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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Cheap flights from St. Louis to London from £270

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Lambert-St Louis to London are usually found in April or November, booked 26 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to London

Cheapest flights from St. Louis to LondonExplore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Explore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to London that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to London

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 11 April 2025.

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

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

Find hourly flight availability from St. Louis to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.

Rainfall in London by month

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

Temperature in London by month

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

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 15 April 2025.

Read through reviews of airlines operating flights from St. Louis to London, such as Delta, KLM and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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

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

Travelling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to London

Fly with Cheapflights

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

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

Can Cheapflights 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?

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Cheapest flights from St. Louis to London
Explore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.