Cheap flights from St. Louis to Europe from $327

The cheapest month to fly to Europe from St. Louis is in January. Flight prices, which tend to average around $718, are often lower during this time because this is during the off-season. If you aren’t able to travel to Europe during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $720.

The cheapest day to depart from St. Louis to Europe is on a Thursday. Travelers who choose to depart for Europe on a Thursday will often find tickets for as low as $805. Flights from St. Louis to Europe on a Friday will generally be more expensive and average around $1,262. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Fly from Lambert-St Louis to Frankfurt am Main for the best Lambert-St Louis - Europe flight prices

You are more likely to see cheaper flights to Europe from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Europe for around $1,045 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Europe from St. Louis for as low as $880 on momondo.

There are 3 cabin classes available to choose from on St. Louis to Europe flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 33% on your flight if you consider stops on a St. Louis to Europe flight.

KLM, British Airways, and Delta are the most popular carriers operating from Lambert-St Louis to Europe

British Airways, United Airlines and Lufthansa are the top three most popular airlines that fly to Europe from St. Louis according to our data. British Airways is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 11 different airlines that fly to Europe on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between St. Louis and Europe have experienced a delay on any given week. The average delay length over the past 12 months has been 114 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 18% of their flights experiencing any sort of delay.

4 flights are operational daily from St. Louis to Europe as of October 2026. The most popular departure time for this route is 9:00PM, with 60% of flights per day taking off in the evening.

As of October 2026, there are 30 flights per week flying from St. Louis to Europe. The most common day of the week flights depart is Tue, with 23% of flights taking off on this day.