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Cheap flights from London Stansted Airport to St. Louis from £380

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
STN — STL
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from Stansted to St. Louis
Explore the most affordable flight options available from Stansted to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 November 2025.

Sun 21/1206:30STN - STL
3 stops42h 06mMultiple Airlines
Fri 26/1215:50STL - STN
3 stops24h 25mMultiple Airlines
Deal found 10/11£1,481
Tue 23/1215:50STN - STL
2 stops28h 05mMultiple Airlines
Fri 26/1215:50STL - STN
3 stops24h 25mMultiple Airlines
Deal found 10/11£1,543
Sat 22/1121:25STN - STL
2 stops22h 30mMultiple Airlines
Sat 29/1116:05STL - STN
2 stops17h 25mMultiple Airlines
Deal found 9/11£1,757
Fri 19/1205:55STN - STL
3 stops24h 00mMultiple Airlines
Mon 22/1216:05STL - STN
3 stops21h 05mMultiple Airlines
Deal found 9/11£2,046
Tue 23/1219:35STN - STL
2 stops24h 20mMultiple Airlines
Sat 3/116:05STL - STN
3 stops21h 05mMultiple Airlines
Deal found 9/11£2,377

Cheap flight deals from Stansted to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) 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 11 November 2025.

Round-trip from

£1,704

One-way from

£380

Popular in

December

Cheapest in

March

Average price

£738
23/12-30/12
  • 23/12-30/12
  • 5 total stops
  • 46h 14m total
  • London to St. Louis
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15/12
  • 15/12
  • 3 total stops
  • 45h 38m total
  • London to St. Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted 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 11 November 2025.
Use the filters below to find and compare flights from London Stansted Airport to St. Louis that are best for you.

Fly from

Stansted

Fly to

St. Louis

Route

Depart

Return

Price

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Sun 21/12

08:30-18:36

3 stops40h 06m

Lambert-St Louis

Fri 26/12

15:50-21:00

2 stops23h 10m

£1,483

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Tue 23/12

15:50-13:55

2 stops28h 05m

Lambert-St Louis

Fri 26/12

15:50-22:15

3 stops24h 25m

£1,543

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Sat 22/11

21:25-13:55

2 stops22h 30m

Lambert-St Louis

Sat 29/11

16:05-15:30

2 stops17h 25m

£1,757

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Fri 19/12

05:55-23:55

3 stops24h 00m

Lambert-St Louis

Mon 22/12

16:05-19:10

3 stops21h 05m

£2,046

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Tue 23/12

19:35-13:55

2 stops24h 20m

Lambert-St Louis

Sat 3/1

16:05-19:10

3 stops21h 05m

£2,377

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Mon 15/12

06:55-22:33

3 stops45h 38m

£380

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Tue 9/12

21:20-11:07

3 stops43h 47m

£420

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Tue 5/5

21:20-13:30

2 stops22h 10m

£495

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Fri 19/12

09:45-22:33

3 stops42h 48m

£551

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Thu 27/11

12:50-13:55

2 stops31h 05m

£724

Flights are sorted by cheapest return flights first.

Deals found on 10/11

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

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

Related info for your journey

Find useful and relevant information for your journey from Stansted 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 Stansted?

    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 Stansted. Booking flights from London Stansted to Lambert-St Louis (STL) should be relatively easy as there are 0 daily inbound flights from London Stansted from 0 different airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Stansted 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.

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Deals for Stansted to St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Stansted to St. Louis 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 Stansted to St. Louis with no change fees?

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

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

Not ready to book yet? You can track prices for flights from Stansted to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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