Is British Airways the cheapest airline to fly with from London to St. Louis?

With an average price of £1,085 return, British Airways is not the cheapest airline to fly from London to St. Louis with. Instead, for the lowest price, our data suggests flying with Finnair, where a return flight costs £870 on average.

Does British Airways fly direct to St. Louis from London?

No, British Airways does not fly the route directly.

What’s the cheapest day of the week to fly from London to St. Louis with British Airways?

On average, the cheapest day of the week to fly from London to St. Louis with British Airways is Sunday, when prices are around £733. The most expensive day is generally Thursday, when the average price is around £1,011.

What’s the cheapest month to fly from London to St. Louis with British Airways?

The cheapest month for British Airways flights to St. Louis from London is generally January, where plane tickets cost £854 on average. If possible, try to avoid the most expensive months of September and December, when tickets cost £1,765 and £1,875 respectively.

£674 Cheap British Airways Flights from London to St. Louis

Flights Deals

Cheap British Airways Flight Deals from London to St. Louis

Here are some of the best deals found on KAYAK recently from British Airways for return flights from London to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Round-trip

One-way

Last minute

Recent return British Airways flight deals from London to St. Louis

KAYAK's recommended return flight British Airways deals departing in the coming months from London to St. Louis.

Discover the best prices for you by selecting your travel dates on KAYAK.

06:30 - 20:21LHR-STL

19h 51m2 stops

20:01 - 12:15STL-LHR

10h 14m1 stop

£674British Airways

Find Deal

Wed, 3 Sep - Wed, 10 Sep

12:30 - 20:21LHR-STL

13h 51m1 stop

16:52 - 10:30STL-LHR

11h 38m1 stop

£691British Airways

Find Deal

Wed, 3 Sep - Wed, 10 Sep

12:30 - 20:21LHR-STL

13h 51m1 stop

16:52 - 10:55STL-LHR

12h 03m1 stop

£698British Airways

Find Deal

Wed, 3 Sep - Wed, 24 Sep

08:25 - 20:58LHR-STL

18h 33m2 stops

16:23 - 10:30STL-LHR

12h 07m1 stop

£708British Airways

Find Deal

Mon, 2 Jun - Mon, 30 Jun

12:30 - 20:19LHR-STL

13h 49m1 stop

17:27 - 12:45STL-LHR

13h 18m1 stop

£732British Airways

Find Deal

Thu, 3 Jul - Thu, 17 Jul

15:30 - 21:52LHR-STL

12h 22m1 stop

13:45 - 08:05STL-LHR

12h 20m1 stop

£746British Airways

Find Deal

Mon, 19 May - Sun, 25 May

12:30 - 20:19LHR-STL

13h 49m1 stop

12:28 - 06:25STL-LHR

11h 57m1 stop

£750British Airways

Find Deal

Wed, 18 Jun - Sat, 21 Jun

12:30 - 20:58LHR-STL

14h 28m1 stop

17:29 - 12:45STL-LHR

13h 16m1 stop

£781British Airways

Find Deal

Fri, 30 May - Fri, 6 Jun

19:40 - 20:19LHR-STL

30h 39m2 stops

16:52 - 10:30STL-LHR

11h 38m1 stop

£794British Airways

Find Deal

Thu, 9 Oct - Mon, 13 Oct

08:40 - 20:19LCY-STL

17h 39m2 stops

19:47 - 11:30STL-LCY

33h 43m2 stops

£800British Airways

Find Deal

Wed, 18 Jun - Sat, 21 Jun

Useful Info

Low season	March
High season	July
Cheapest flight	£674
Average price round-trip	£699

Best time to beat the crowds (22% less expensive on average)

Most popular time to fly (21% more expensive on average)

Flight from London Heathrow Airport to St. Louis

(price for this month)

When to Book Flights with British Airways from London to St. Louis

Average price per month

Flight prices as travel date approaches

Is British Airways the cheapest airline to fly with from London to St. Louis?
With an average price of £1,085 return, British Airways is not the cheapest airline to fly from London to St. Louis with. Instead, for the lowest price, our data suggests flying with Finnair, where a return flight costs £870 on average.
Does British Airways fly direct to St. Louis from London?
No, British Airways does not fly the route directly.
What’s the cheapest day of the week to fly from London to St. Louis with British Airways?
On average, the cheapest day of the week to fly from London to St. Louis with British Airways is Sunday, when prices are around £733. The most expensive day is generally Thursday, when the average price is around £1,011.
What’s the cheapest month to fly from London to St. Louis with British Airways?
The cheapest month for British Airways flights to St. Louis from London is generally January, where plane tickets cost £854 on average. If possible, try to avoid the most expensive months of September and December, when tickets cost £1,765 and £1,875 respectively.

6.6

OkayBased on 6,837 verified guest reviews

6.4Entertainment

6.7Comfort

6.3Food

6.8Boarding

7.6Crew

Pros +

"The crew was exceptional, the service was great and the entertainment options were abundant." (in 251 reviews)

Cons -

I purchased business class food was uneatble cald sandwich. (in 155 reviews)
Window was dirty from someone touching it on a previous flight. (in 1265 reviews)
The airline could have kept middle seats open to instill more confidence in flying. (in 550 reviews)

Show reviews that mention

2.0 Poor

Verified traveller, Apr 2025

LHR-NBO

When i booked my flight, my ticket shows that i have 2 pieces of luggage allowance. Once i got into the check in, i was informed that i needed to pay extra for my two suitcases, and was put into a very precarious situation, I had to pay close to £200 for my two suitcases and these were not extra burgages, I felt extremely disappointed. In case i never had the kind of money, it meant that i would have missed my flight

8.0 Very Good

Mitra, Apr 2025

JFK-LHR

Freezing cold in the cabin.

6.0 Okay

Lorrie, Apr 2025

LHR-PDX

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

6.0 Okay

Lorrie, Apr 2025

NAP-LHR

Boarding was delayed and we had to get on buses to plane so group # didn't matter. No food or drinks served gratis. Seats were small, knees smashed into the seat ahead, didn't recline. Crew was excellent though.

10.0 Wonderful

Margaret L, Apr 2025

EDI-LHR

All of our flights were on time

10.0 Wonderful

Peter, Apr 2025

LCY-PMI

Fast and functional

6.0 Okay

Michael, Apr 2025

ORD-IND

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

10.0 Wonderful

Michael, Apr 2025

LHR-ORD

Good

10.0 Wonderful

Simon, Apr 2025

LHR-MRS

Amazing

6.0 Okay

Verified traveller, Apr 2025

SEA-LHR

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

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£674 Find Cheap British Airways Flights from London to St. Louis

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Low season

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When to Book Flights with British Airways from London to St. Louis

FAQs for flying to St. Louis with British Airways

Is British Airways the cheapest airline to fly with from London to St. Louis?

Does British Airways fly direct to St. Louis from London?

What’s the cheapest day of the week to fly from London to St. Louis with British Airways?

What’s the cheapest month to fly from London to St. Louis with British Airways?

British Airways Customer Reviews

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Cons -

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

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The most popular destinations for flights with British Airways according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Cabin class types available on flights to St. Louis

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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