Cheap flights from the United Kingdom to St. Louis from £266
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to St. Louis departing on 21/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from United Kingdom to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
The month of March is, on average, the cheapest month to fly to St. Louis from United Kingdom, with most prices found around £553. If you’re not able to fly to St. Louis in March, then January is your next best option. Flight prices from United Kingdom to St. Louis during January average around £564.
What is the cheapest day to depart on your flight to St. Louis?
Our data shows that Wednesday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £604. Flights from United Kingdom to St. Louis on a Sunday will generally be more expensive and average around £719. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to St. Louis?
Our data shows that the cheapest United Kingdom to St. Louis flights are usually those with departure times in the evening. Our users have found flights to St. Louis in the evening for as low as £563. In contrast, the most expensive time of day to depart to St. Louis is in the morning when prices are around £662.
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from United Kingdom when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around £697 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from United Kingdom for as low as £618 on momondo.
What is the cheapest airline that flies from United Kingdom to Lambert-St Louis?
WestJet, Aer Lingus, and British Airways are the most popular carriers operating from United Kingdom to Lambert-St Louis
Which airlines fly to St. Louis?
Finnair, British Airways and Virgin Atlantic are the top three most popular airlines that fly to St. Louis from United Kingdom according to our data. Finnair is the first choice among our users, with 64% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 10 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
Cheap United Kingdom to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United Kingdom to St. Louis
When did momondo last update prices for flights from United Kingdom to Lambert-St Louis Airport?
Prices for flights from United Kingdom to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United Kingdom to Lambert-St Louis Airport?
As of May 2025, there are 10 operators available to choose from for flights from United Kingdom to Lambert-St Louis Airport.
How old do you have to be to fly from United Kingdom to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from United Kingdom to St. Louis
Compare and see reviews for airlines that fly from United Kingdom to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £509 | Free Cancellation | Rating 7.6 1,275 reviews | |||
| PriceFrom £603 | Free Cancellation | Rating 7.0 2,701 reviews | |||
| PriceFrom £631 | Free Cancellation | Rating 6.6 6,846 reviews | |||
| PriceFrom £638 | Free Cancellation | Rating 7.4 643 reviews | |||
| PriceFrom £641 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom £679 | Free Cancellation | Rating 6.7 7,045 reviews | |||
| PriceFrom £705 | Free Cancellation | Rating 7.0 9,252 reviews | |||
| PriceFrom £730 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom £783 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom £790 | Free Cancellation | Rating 7.0 1,076 reviews |
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Why should I use momondo to find a flight deal from United Kingdom to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United Kingdom to St. Louis . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from United Kingdom to St. Louis with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for United Kingdom to St. Louis flights to just show those with flexible booking policies.
How can momondo help me find flights from United Kingdom to St. Louis?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from United Kingdom.
I’m not ready to book a flight from United Kingdom to St. Louis right now. Can momondo alert me if prices change?
Price alerts on flights to St. Louis from United Kingdom are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.