Cheap Flights from London to St. Louis from US$502

Frequently Asked Questions

• What are the cheapest flights from London to St. Louis (LON-STL)?

  Based on Trip.com data, Norse Atlantic Airways offers one-way fares as low as US$502 on Cheapest nonstop routes (e.g. LGW to STL on Wed, Jun 17), while Virgin Atlantic offers Cheapest nonstop round-trips from US$1,045 departing on Fri, Jun 26 and returning on Fri, Jul 3.

• Which airlines offer direct flights from London to St. Louis?

  At the moment, you can catch a nonstop flight from London to St. Louis with the following airlines, including: British Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from London to St. Louis?

  It takes about 9 hours 5 minutes to fly from London to St. Louis.

• When is the best time to book flights from London to St. Louis?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to St. Louis is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from London to St. Louis?

  Based on Trip.com data in the past 4 weeks, there is 2 flight per week flying from London to St. Louis. You can check the weekly schedule for popular airlines on this route below: British Airways: -/M/T/-/T/-/S -- BA221 (16:56)

• How can I find the best deals on flights from London to St. Louis?

  To find best deals on flights from London to St. Louis, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Jun 17, with one-way flights priced at just US$502.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is British Airways.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for St. Louis travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from London (LON) to St. Louis (STL) the cheapest?

  The cheapest months to fly from London to St. Louis is August, when demand for travel is lower.

• Which upcoming date is cheapest to fly from London to St. Louis on?

  After crunching the numbers on our June flight calendar, it's currently cheapest to fly from London to St. Louis on June 22, 2026 with Lufthansa, with prices starting at US$882.

• Which airports can I fly to for St. Louis from London?

  You can land at any one of the following hubs in St. Louis, with Heathrow Airport to St. Louis Lambert International Airport (LHR-STL) is by far the most common option on this route: St. Louis Downtown Airport (CPS) St. Louis Lambert International Airport (STL).

• Is there any time difference between London and St. Louis?

  The time difference between St. Louis and London is 6h.

• How do I change or cancel my ticket from London to St. Louis?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.