Cheap flights from St. Louis to Madrid from $386
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Madrid departing on 12/4. 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 St. Louis to Madrid
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 typical price of a round-trip flight between St. Louis and Madrid?
What is the cheapest month to fly to Madrid?
The month of February is, on average, the cheapest month to fly to Madrid from St. Louis, with most prices found around $651. If you don’t want to visit Madrid in February, then you should wait until August to fly from St. Louis, when ticket prices are also cheap, with an average price of $683.
What is the cheapest day to depart on your flight to Madrid?
The cheapest day to depart on your flight to Madrid is on a Tuesday when prices can be found for as low as $743. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Madrid on Monday is $1,028.
What is the cheapest time of day to depart on your flight to Madrid?
Flying to Madrid from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing at noon. Flights to Madrid are more costly in the morning, with an average ticket price of $983. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Madrid?
You are more likely to see cheaper flights to Madrid from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Madrid for around $897 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Madrid from St. Louis for as low as $818 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Madrid Barajas?
Iberia, Air Canada, and KLM are the most popular carriers operating from Lambert-St Louis to Madrid Barajas
What airlines fly to Madrid?
Iberia, American Airlines and United Airlines are the top three most popular airlines that fly to Madrid from St. Louis according to our data. Iberia is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Madrid. Keep in mind that there are 7 different airlines that fly to Madrid on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Madrid
Cheap St. Louis to Madrid (STL to MAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Madrid
How far is Lambert-St Louis to Madrid Barajas by plane?
The straight-line distance from Lambert-St Louis to Madrid Barajas is 4406.9 mi. 10h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Madrid Barajas Airport?
Prices for flights from Lambert-St Louis Airport to Madrid Barajas Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Madrid Barajas Airport?
The number of operators available for flights from Lambert-St Louis Airport to Madrid Barajas Airport is 7 as of July 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Madrid Barajas Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Madrid Barajas Airport.
What documentation or ID do you need to fly to Madrid Barajas Airport?
The travel and health documents you'll need for your trip to Madrid Barajas Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Madrid Barajas Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Madrid?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Madrid is Iberia, representing 35% of all bookings. The subsequent popular airlines are American Airlines at 34%, United Airlines at 9%, and British Airways at 8%.
Best airlines flying from St. Louis to Madrid
Compare and see reviews for airlines that fly from St. Louis to Madrid with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $545 | Free Cancellation | Rating 6.6 7,103 reviews | |||
| PriceFrom $576 | Free Cancellation | Rating 7.0 2,824 reviews | |||
| PriceFrom $583 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $615 | Free Cancellation | Rating 6.8 7,193 reviews | |||
| PriceFrom $617 | Free Cancellation | Rating 7.4 8,843 reviews | |||
| PriceFrom $630 | Free Cancellation | Rating 8.0 7,958 reviews | |||
| PriceFrom $701 | Free Cancellation | Rating 7.1 9,685 reviews |
Traveling to a place near Madrid?
Book flights to Madrid if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Madrid?
It is quick and easy to find St. Louis to Madrid flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Madrid that suits you.
Can I find flights from St. Louis to Madrid with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for St. Louis to Madrid flights to just show those with flexible booking policies.
How can momondo help me find flights from St. Louis to Madrid?
Once you have performed a search for St. Louis to Madrid flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from St. Louis to Madrid right now. Can momondo alert me if prices change?
Price alerts on flights to Madrid from St. Louis 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.