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$226+ Cheap flights from St. Louis (STL) to the United Kingdom

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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from St. Louis to United Kingdom

Keep the following information in mind while searching for St. Louis to United Kingdom flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$648
(Cheapflightsfares)

One-way from

$226
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$967
Provider with most accurate pricing for Lambert-St Louis-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-London (LON) flights.
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From Lambert-St Louis to United Kingdom
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One-way flight from Lambert-St Louis to United Kingdom
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Highest demand for flights based on searches. 15% potential increase in price ($171 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from St. Louis to United Kingdom

Cheapest flights from St. Louis to United Kingdom
Explore the most affordable flight options available from St. Louis to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:15 pmSTL - EDI
1 stop11h 55mBritish Airways
Thu 9/411:35 amEDI - STL
1 stop14h 46mBritish Airways
Deal found 4/30$648
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:20 amSTL - EDI
2 stops20h 00mDelta
Thu 9/49:00 amEDI - STL
1 stop15h 03mDelta
Deal found 4/30$670
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:54 pmSTL - EDI
2 stops15h 46mAmerican Airlines
Thu 9/411:35 amEDI - STL
1 stop14h 46mAmerican Airlines
Deal found 4/30$671
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/98:00 pmSTL - MAN
2 stops32h 00mBritish Airways
Wed 8/2010:55 amMAN - STL
2 stops16h 10mBritish Airways
Deal found 4/30$681
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:00 amSTL - GLA
2 stops22h 20mBritish Airways
Sat 9/137:55 amGLA - STL
2 stops18h 26mBritish Airways
Deal found 4/30$692
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/810:46 amSTL - MAN
2 stops14h 59mDelta
Fri 8/222:15 pmMAN - STL
2 stops25h 14mDelta
Deal found 4/29$707
This Iberia deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/82:42 pmSTL - EDI
2 stops16h 38mIberia
Thu 9/1811:35 amEDI - STL
1 stop14h 46mIberia
Deal found 4/30$711
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:22 pmSTL - EDI
1 stop12h 18mUnited Airlines
Thu 9/189:00 amEDI - STL
1 stop12h 18mUnited Airlines
Deal found 4/30$712
This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/192:39 pmSTL - LHR
1 stop11h 26mIberia
Tue 8/2612:15 pmLHR - STL
1 stop13h 58mIberia
Deal found 4/29$718
This StudentUniverse deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/194:18 pmSTL - LHR
1 stop12h 12mFinnair
Tue 8/264:10 pmLHR - STL
2 stops32h 20mFinnair
Deal found 4/29$721
This Air Canada deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/221:30 pmSTL - LHR
1 stop14h 05mAir Canada
Tue 9/308:45 amLHR - STL
2 stops16h 48mAir Canada
Deal found 4/30$722
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:05 pmSTL - LHR
1 stop14h 45mUnited Airlines
Fri 11/146:30 amLHR - STL
1 stop13h 25mUnited Airlines
Deal found 4/30$728

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to United Kingdom 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 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from St. Louis to the United Kingdom that are best for you.

Fly from

St. Louis

Fly to

United Kingdom

Route

Depart

Return

Price

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Wed 8/20

1:15 pm-7:10 am

1 stop11h 55m

Edinburgh Turnhouse

Thu 9/4

11:35 am-8:21 pm

1 stop14h 46m

$648

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Wed 8/20

7:20 am-9:20 am

2 stops20h 00m

Edinburgh Turnhouse

Thu 9/4

9:00 am-6:03 pm

1 stop15h 03m

$670

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Wed 8/20

4:54 pm-2:40 pm

2 stops15h 46m

Edinburgh Turnhouse

Thu 9/4

11:35 am-8:21 pm

1 stop14h 46m

$671

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Sat 8/9

8:00 pm-10:00 am

2 stops32h 00m

Manchester

Wed 8/20

10:55 am-9:05 pm

2 stops16h 10m

$681

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Fri 8/8

10:46 am-7:45 am

2 stops14h 59m

Manchester

Fri 8/22

2:15 pm-9:29 am

2 stops25h 14m

$707

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Mon 9/8

2:42 pm-1:20 pm

2 stops16h 38m

Edinburgh Turnhouse

Thu 9/18

11:35 am-8:21 pm

1 stop14h 46m

$711

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Mon 9/8

5:22 pm-11:40 am

1 stop12h 18m

Edinburgh Turnhouse

Thu 9/18

9:00 am-3:18 pm

1 stop12h 18m

$712

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 7/28

5:37 pm-1:10 pm

1 stop13h 33m

London Heathrow

Thu 8/14

6:15 am-6:03 pm

2 stops17h 48m

$736

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Tue 5/13

5:45 pm-10:00 am

1 stop34h 15m

London Gatwick

Tue 5/20

2:00 pm-11:44 pm

1 stop15h 44m

$754

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sat 10/4

1:30 pm-7:20 am

2 stops35h 50m

Edinburgh Turnhouse

Sat 10/18

9:00 am-7:33 pm

1 stop16h 33m

$759

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from St. Louis with our price prediction graph.
Estimated round-trip 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 the United Kingdom

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to United Kingdom (average of $661). Flying from St. Louis to United Kingdom in June is currently the most expensive (average of $1,103). 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 GB?

Find hourly flight availability from St. Louis to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

When flying from St. Louis to United Kingdom, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in United Kingdom by month

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

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

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

If weather is an important factor for your trip to United Kingdom, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated May 1, 2025.
See what other customers who have flown with Delta, KLM and Finnair from St. Louis to United Kingdom have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

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
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

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.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

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
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

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
643 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

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

Find useful and relevant information for your journey from St. Louis to United Kingdom. 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 United Kingdom?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to United Kingdom. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    $426 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Delta, with prices starting from $443 and $443, respectively.

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

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

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

    Yes. In addition to deals on St. Louis to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to United Kingdom 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 United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to United Kingdom (average of $661). Flying from St. Louis to United Kingdom in June is currently the most expensive (average of $1,103). 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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Alternative routes for St. Louis to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from St. Louis to United Kingdom

Discover the top 10 airlines that operate flights from St. Louis to United Kingdom. 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 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$596Average$880FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$625Average$1,012FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$643Average$1,011FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$647Average$877FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$669Average$1,102FlexibilityNo cancel feeOn-time77%
KLMCheapest$669Average$936FlexibilityNo cancel feeOn-time75%
IberiaCheapest$672Average$968FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$674Average$977FlexibilityNo cancel feeOn-time72%
DeltaCheapest$682Average$1,037FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$696Average$984FlexibilityNo cancel feeOn-time76%

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