Cheap flights from St. Louis to Madrid from $331
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 3/1. 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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Fly from
Fly to
Route
Depart
Return
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/1
7:04 pm-11:35 pm
2 stops21h 31m
Madrid Barajas
Thu 3/4
1:25 pm-10:41 am
2 stops28h 16m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/1
6:00 am-8:00 am
2 stops19h 00m
Madrid Barajas
Wed 3/10
6:05 am-1:45 pm
1 stop14h 40m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Wed 3/17
12:08 pm-9:20 am
1 stop15h 12m
Madrid Barajas
Wed 3/24
12:55 am-6:13 pm
1 stop23h 18m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/1
12:08 pm-9:25 am
1 stop14h 17m
Madrid Barajas
Thu 3/4
1:15 pm-9:09 pm
1 stop14h 54m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/1
12:08 pm-9:25 am
1 stop14h 17m
Madrid Barajas
Wed 3/10
1:00 pm-7:27 pm
1 stop13h 27m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/1
8:25 am-7:45 am
1 stop16h 20m
Madrid Barajas
Thu 3/4
1:25 pm-3:41 pm
2 stops33h 16m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/1
10:07 am-9:30 am
1 stop16h 23m
Madrid Barajas
Thu 3/4
1:25 pm-3:02 pm
2 stops32h 37m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 3/15
9:45 am-8:50 am
1 stop17h 05m
Madrid Barajas
Mon 3/22
9:00 pm-9:09 pm
2 stops30h 09m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 2/15
2:19 pm-8:50 am
1 stop11h 31m
Madrid Barajas
Mon 2/22
12:55 am-9:24 am
1 stop15h 29m
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Tue 3/23
7:35 am-5:45 am
1 stop16h 10m
Madrid Barajas
Wed 3/31
11:45 am-8:22 pm
1 stop15h 37m
See travel insights to Madrid from
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?
Prices are currently low for flights on this route.
Typical prices usually range from $715 to $815.The lowest price recently found on this route was $705.
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 $673. If you don’t want to visit Madrid in February, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $735.
How far in advance should I book a flight from St. Louis 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 $948 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 $794 on momondo.
Can stopping save me money on St. Louis to Madrid flights?
You could potentially save up to 57% on your flight if you consider stops on a St. Louis to Madrid flight.
How have St. Louis to Madrid flight prices changed over time?
As of October 2026, prices for St. Louis to Madrid flights are approximately 52% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Madrid Barajas?
British Airways, Iberia, and American Airlines are the most popular carriers operating from Lambert-St Louis to Madrid Barajas
What airlines fly to Madrid?
British Airways, American Airlines and Iberia are the top three most popular airlines that fly to Madrid from St. Louis according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Madrid. Keep in mind that there are 6 different airlines that fly to Madrid on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between St. Louis and Madrid?
Charlotte (CLT) was the most common stop: 43% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from St. Louis to Madrid?
Flights via Chicago (ORD) offer the lowest average round-trip price of $630.
Which layover airport has the shortest travel time from St. Louis to Madrid?
Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 10h 47m.
Which layover airport has the shortest connection time from St. Louis to Madrid?
Atlanta (ATL) has the shortest average layover time for this route: 1h 34m.
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
Frequently asked questions about flying 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. 14h 14m 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 6 as of October 2026.
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 British Airways, representing 33% of all bookings. The subsequent popular airlines are American Airlines at 28%, Iberia at 21%, and Lufthansa at 7%.
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 $489 | Free Cancellation | Rating 7.8 8,653 reviews | |||
| PriceFrom $494 | Free Cancellation | Rating 6.8 8,273 reviews | |||
| PriceFrom $516 | Free Cancellation | Rating 6.7 8,260 reviews | |||
| PriceFrom $523 | Free Cancellation | Rating 7.0 3,247 reviews | |||
| PriceFrom $581 | Free Cancellation | Rating 7.0 12,150 reviews | |||
| PriceFrom $623 | Free Cancellation | Rating 7.4 10,350 reviews |
Traveling to a place near Madrid?
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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.