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Cheap flights from St. Louis to Europe from $90

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 Europe departing on 7/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Europe

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
2:18 pm - 8:40 am
STL
-
CDG
11h 22m
1 stop
Virgin Atlantic Logo
11:00 am - 8:37 pm
CDG
-
STL
16h 37m
1 stop
$311Virgin Atlantic
Thu, Oct 8 - Thu, Oct 15
Virgin Atlantic Logo
2:18 pm - 12:15 pm
STL
-
CDG
14h 57m
2 stops
Virgin Atlantic Logo
9:25 am - 11:39 pm
CDG
-
STL
21h 14m
1 stop
$313Virgin Atlantic
Thu, Oct 8 - Thu, Oct 15
United Airlines Logo
8:40 am - 8:30 am
STL
-
FCO
16h 50m
1 stop
United Airlines Logo
1:15 pm - 12:40 pm
FCO
-
STL
30h 25m
2 stops
$770United Airlines
Sun, Nov 8 - Wed, Nov 18
United Airlines Logo
1:08 pm - 10:55 am
STL
-
FCO
14h 47m
2 stops
United Airlines Logo
1:15 pm - 12:40 pm
FCO
-
STL
30h 25m
2 stops
$774United Airlines
Mon, Nov 9 - Wed, Nov 18
Lufthansa Logo
7:04 pm - 5:35 pm
STL
-
CDG
15h 31m
2 stops
Lufthansa Logo
11:05 am - 11:25 pm
CDG
-
STL
19h 20m
2 stops
$789Lufthansa
Mon, Nov 30 - Tue, Dec 8
American Airlines Logo
9:40 pm - 11:40 am
STL
-
LHR
8h 00mnonstop
American Airlines Logo
9:15 am - 5:01 pm
LHR
-
STL
13h 46m
1 stop
$1,072American Airlines
Sun, Aug 9 - Sun, Aug 16
Lufthansa Logo
1:13 pm - 3:40 pm
STL
-
LHR
20h 27m
2 stops
Lufthansa Logo
1:30 pm - 10:59 pm
LHR
-
STL
15h 29m
2 stops
$1,075Lufthansa
Mon, Aug 3 - Fri, Aug 14
British Airways Logo
9:35 pm - 11:35 am
STL
-
LHR
8h 00mnonstop
British Airways Logo
8:55 am - 6:04 pm
LHR
-
STL
15h 09m
1 stop
$1,079British Airways
Tue, Sep 22 - Sat, Oct 3
British Airways Logo
1:25 pm - 8:05 am
STL
-
LHR
12h 40m
1 stop
British Airways Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
$1,080British Airways
Tue, Sep 8 - Wed, Sep 16
American Airlines Logo
9:35 pm - 11:35 am
STL
-
LHR
8h 00mnonstop
American Airlines Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
$1,083American Airlines
Wed, Aug 26 - Wed, Sep 2

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Delta flights from St. Louis to Europe

Our best Delta deals on St. Louis to Europe flight tickets
Delta
Oct 26
STL6:00 amLambert-St Louis
20h 45m
1 stop
DUB7:45 amDublin
Nov 4
DUB8:50 amDublin
17h 59m
2 stops
STL8:49 pmLambert-St Louis
$702
Delta
Nov 9
STL11:51 amLambert-St Louis
14h 54m
2 stops
DUB8:45 amDublin
Nov 18
DUB8:50 amDublin
17h 59m
2 stops
STL8:49 pmLambert-St Louis
$706
Delta
Nov 9
STL11:51 amLambert-St Louis
14h 54m
2 stops
DUB8:45 amDublin
Nov 18
DUB5:45 amDublin
18h 16m
2 stops
STL6:01 pmLambert-St Louis
$707

Virgin Atlantic flights from St. Louis to Europe

Our best Virgin Atlantic deals on St. Louis to Europe flight tickets
Virgin Atlantic
Oct 8
STL2:18 pmLambert-St Louis
11h 22m
1 stop
CDG8:40 amParis Charles de Gaulle
Oct 15
CDG11:00 amParis Charles de Gaulle
16h 37m
1 stop
STL8:37 pmLambert-St Louis
$311
Virgin Atlantic
Oct 8
STL2:18 pmLambert-St Louis
14h 57m
2 stops
CDG12:15 pmParis Charles de Gaulle
Oct 15
CDG9:25 amParis Charles de Gaulle
21h 14m
1 stop
STL11:39 pmLambert-St Louis
$313
Virgin Atlantic
Jul 6
STL10:51 amLambert-St Louis
15h 04m
1 stop
FRA8:55 amFrankfurt am Main
Jul 16
FRA10:40 amFrankfurt am Main
18h 35m
1 stop
STL10:15 pmLambert-St Louis
$395

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Europe that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 27, 2026.
Use the filters below to find and compare flights from St. Louis to Europe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Thu 10/8

2:18 pm-8:40 am

1 stop11h 22m

Paris Charles de Gaulle

Thu 10/15

11:00 am-8:37 pm

1 stop16h 37m

$311

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Thu 10/8

2:18 pm-12:15 pm

2 stops14h 57m

Paris Charles de Gaulle

Thu 10/15

9:25 am-11:39 pm

1 stop21h 14m

$313

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

8:40 am-8:30 am

1 stop16h 50m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$770

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 11/9

1:08 pm-10:55 am

2 stops14h 47m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$774

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Mon 11/30

7:04 pm-5:35 pm

2 stops15h 31m

Paris Charles de Gaulle

Tue 12/8

11:05 am-11:25 pm

2 stops19h 20m

$789

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 8/9

9:40 pm-11:40 am

Nonstop8h 00m

London Heathrow

Sun 8/16

9:15 am-5:01 pm

1 stop13h 46m

$1,072

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 8/3

1:13 pm-3:40 pm

2 stops20h 27m

London Heathrow

Fri 8/14

1:30 pm-10:59 pm

2 stops15h 29m

$1,075

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 9/22

9:35 pm-11:35 am

Nonstop8h 00m

London Heathrow

Sat 10/3

8:55 am-6:04 pm

1 stop15h 09m

$1,079

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 9/8

1:25 pm-8:05 am

1 stop12h 40m

London Heathrow

Wed 9/16

4:25 pm-7:30 pm

Nonstop9h 05m

$1,080
Quickest round-trip

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/26

9:35 pm-11:35 am

Nonstop8h 00m

London Heathrow

Wed 9/2

4:25 pm-7:30 pm

Nonstop9h 05m

$1,083

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to Europe

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 Europe?

The cheapest month to fly to Europe from St. Louis is in January. Flight prices, which tend to average around $288, 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 $385.

What is the cheapest day to depart on your flight to Europe?

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 $756. Flights from St. Louis to Europe on a Friday will generally be more expensive and average around $1,189. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Lambert-St Louis to Europe flight route?

Fly from Lambert-St Louis to London Heathrow for the best Lambert-St Louis - Europe flight prices

How far in advance should I book a flight from St. Louis to Europe?

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 $890 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 $811 on momondo.

What cabin class options are available on St. Louis to Europe flights?

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.

Can stopping save me money on St. Louis to Europe flights?

You could potentially save up to 31% on your flight if you consider stops on a St. Louis to Europe flight.

Cheap St. Louis to Europe flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Europe

Best Price Found

$374

Fastest flight time

8h 00m

Direct flights

Mon, Wed, Thu and Sat

Airports in Europe

4,107 airports
The best one-way flight to Europe from St. Louis in the past 72 hours is $374. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $990.
The fastest flight from St. Louis to Europe takes 8h 00m
Direct flights go from St. Louis to Europe on Monday, Wednesday, Thursday and Saturday. The only airline offering direct flights is British Airways.
There are 4,107 airports in Europe. From St. Louis there are direct flights to London Heathrow (LHR).
Search flight deals

Frequently asked questions about flying from St. Louis to Europe

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Europe?

    Prices for flights from Lambert-St Louis Airport to Europe are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Europe?

  • How old do you have to be to fly from Lambert-St Louis Airport to Europe?

    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 Europe.

  • What documentation or ID do you need to fly to Europe?

    The necessary travel and health documents for your Europe trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Europe

Compare and see reviews for airlines that fly from St. Louis to Europe with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $470Free CancellationRating
6.7
8,077 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,104 reviews
Search Lufthansa flights
DeltaPriceFrom $483Free CancellationRating
7.8
8,455 reviews
Search Delta flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,776 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.8
1,531 reviews
Search KLM flights
IberiaPriceFrom $523Free CancellationRating
7.0
3,250 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $538Free CancellationRating
7.5
690 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,899 reviews
Search United Airlines flights
Air CanadaPriceFrom $560Free CancellationRating
7.1
11,269 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,857 reviews
Search Scandinavian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Europe?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Europe. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Europe with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Europe flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Europe?

Once you have performed a search for St. Louis to Europe 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 Europe right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Europe from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Europe

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