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Cheap flights from London Gatwick Airport to St. Louis from £345

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — STL
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to St. Louis
Explore the most affordable flight options available from Gatwick to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 May 2026.

Mon 1/614:00
LGW
-
STL
1 stop15h 57m
Multiple Airlines
Mon 8/616:19
STL
-
LGW
1 stop35h 41m
Multiple Airlines
Deal found 2/5£657
Wed 3/614:00
LGW
-
STL
1 stop15h 57m
Multiple Airlines
Mon 15/619:38
STL
-
LGW
2 stops32h 22m
Multiple Airlines
Deal found 29/4£673
Fri 29/514:00
LGW
-
STL
1 stop15h 57m
Multiple Airlines
Fri 5/616:19
STL
-
LGW
1 stop35h 41m
Multiple Airlines
Deal found 3/5£684
Wed 13/514:00
LGW
-
STL
2 stops35h 23m
Multiple Airlines
Tue 26/516:19
STL
-
LGW
1 stop35h 41m
Multiple Airlines
Deal found 30/4£704
Wed 10/614:00
LGW
-
STL
1 stop15h 49m
Multiple Airlines
Wed 17/620:08
STL
-
LGW
2 stops31h 52m
Multiple Airlines
Deal found 3/5£712
Wed 3/614:00
LGW
-
STL
1 stop15h 57m
Multiple Airlines
Fri 12/619:03
STL
-
LGW
2 stops32h 57m
Multiple Airlines
Deal found 2/5£728
Sat 30/509:40
LGW
-
STL
2 stops16h 45m
Multiple Airlines
Sat 6/614:15
STL
-
LGW
2 stops35h 40m
Multiple Airlines
Deal found 30/4£734
Mon 15/609:40
LGW
-
STL
2 stops16h 45m
Multiple Airlines
Mon 22/614:15
STL
-
LGW
2 stops35h 40m
Multiple Airlines
Deal found 1/5£735

Find flight deals from Gatwick to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to St. Louis (STL). 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 4 May 2026.

Round-trip from

£643

One-way from

£345

Popular in

July

Cheapest in

January

Average price

£702
25/6-9/7
  • 25/6-9/7
  • 2 total stops
  • 51h 40m total
  • London to St. Louis
Search Deals
31/5
  • 31/5
  • 1 total stop
  • 15h 57m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£65 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick to St. Louis 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 858,174 searches. Data last updated 4 May 2026.
Use the filters below to find and compare flights from London Gatwick Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 15/6

10:25-20:39

2 stops16h 14m

Lambert-St Louis

Mon 22/6

11:18-09:40

2 stops16h 22m

£787

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 17/6

10:25-22:18

2 stops17h 53m

Lambert-St Louis

Tue 23/6

11:18-09:25

2 stops16h 07m

£789

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 10/6

10:25-22:18

2 stops17h 53m

Lambert-St Louis

Wed 17/6

10:20-09:25

2 stops17h 05m

£789

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Tue 16/6

10:35-20:39

2 stops16h 04m

Lambert-St Louis

Tue 23/6

11:18-09:25

2 stops16h 07m

£791

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 20/5

22:00-20:09

3 stops28h 09m

Lambert-St Louis

Sat 30/5

07:05-07:55

1 stop18h 50m

£816

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 18/6

14:00-23:49

1 stop15h 49m

Lambert-St Louis

Thu 25/6

18:31-10:00

2 stops33h 29m

£819
Fastest return journey

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 26/6

10:25-20:39

2 stops16h 14m

Lambert-St Louis

Sun 12/7

13:54-09:25

2 stops13h 31m

£851

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Sat 27/6

10:25-21:40

2 stops17h 15m

Lambert-St Louis

Mon 6/7

13:59-09:40

2 stops13h 41m

£884

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 18/5

07:10-20:09

2 stops18h 59m

Lambert-St Louis

Mon 25/5

14:15-10:45

1 stop14h 30m

£898

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 2/9

09:40-20:07

1 stop16h 27m

Lambert-St Louis

Wed 23/9

14:40-16:20

2 stops19h 40m

£898

Flights are sorted by cheapest return flights first.

Deals found on 4/5

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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

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

What’s the top stopover airport for flights from London Gatwick Airport to St. Louis?

Share of one-stop return flights from London Gatwick Airport to St. Louis chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Chicago (ORD) – chosen by Cheapflights users on 60% of one-stop itineraries from London Gatwick Airport to St. Louis on Cheapflights.

What’s the cheapest stopover airport for flights from London Gatwick Airport to St. Louis?

Average return fare for one-stop flights from London Gatwick Airport to St. Louis, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £405.

What’s the fastest stopover option from London Gatwick Airport to St. Louis?

Shortest average travel time for one-stop one-way flights from London Gatwick Airport to St. Louis, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 11h 25m.

Which airport typically offers the quickest stopover for flights from London Gatwick Airport to St. Louis?

Average stopover duration for one-stop one-way flights from London Gatwick Airport to St. Louis, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 1h 03m.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated 4 May 2026.
Check out reviews from past customers who have flown with Finnair from London Gatwick Airport to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,392 reviews
Check prices

Boarding

7.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.6
Good
1,392 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Boarding

7.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Related info for your journey

Find useful and relevant information for your journey from Gatwick to St. Louis. 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 into for flights to St. Louis from London Gatwick?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to St. Louis from London Gatwick. Booking flights from London Gatwick to Lambert-St Louis (STL) should be relatively easy as there are 0 daily inbound flights from London Gatwick from 1 airline.

  • How long is the flight from London Gatwick Airport to St. Louis?

    Delta can get you from London Gatwick Airport to St. Louis in just under 16h 14m. Your travel time can differ by up to . London Gatwick Airport and St. Louis are separated by a distance of 4207 mi.

  • What is the cheapest airline to fly from London Gatwick Airport to St. Louis round-trip?

    Finnair, at £681, was found to be the cheapest airline from London Gatwick Airport to St. Louis..

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

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

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

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

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

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Gatwick to St. Louis

Discover the top airline that operate flights from Gatwick to St. Louis. 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 858,174 searches. Data last updated 4 May 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£681Average£743FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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

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

Cheapflights helps you search for flights from Gatwick to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Gatwick to St. Louis.

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

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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to St. Louis from Gatwick today and book when prices fit your budget.

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