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$167+ Cheap flights from St. Louis (STL) to Europe

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CPH
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Find flight deals from St. Louis to Europe

Cheapest flights from St. Louis to Europe
Explore the most affordable flight options available from St. Louis to Europe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This KLM deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/97:02 pmSTL - DUB
1 stop30h 43mMultiple Airlines
Tue 11/2510:45 amDUB - STL
1 stop11h 48mMultiple Airlines
Deal found 11/5$424
This KLM deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:00 amSTL - DUB
1 stop16h 45mKLM
Tue 12/99:45 amDUB - STL
1 stop13h 04mKLM
Deal found 11/4$433
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:42 pmSTL - FCO
2 stops21h 18mLufthansa
Wed 12/247:05 amFCO - STL
1 stop13h 50mLufthansa
Deal found 11/4$435
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:00 amSTL - DUB
1 stop16h 45mDelta
Tue 12/910:45 amDUB - STL
2 stops16h 02mDelta
Deal found 11/4$438
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:35 pmSTL - DUB
2 stops13h 45mDelta
Tue 11/258:50 amDUB - STL
2 stops19h 08mDelta
Deal found 11/5$443
This KLM deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:00 amSTL - DUB
1 stop16h 45mMultiple Airlines
Thu 12/116:00 amDUB - STL
2 stops17h 10mMultiple Airlines
Deal found 11/3$452
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:31 pmSTL - DUB
1 stop13h 39mUnited Airlines
Sun 11/99:00 amDUB - STL
2 stops39h 47mUnited Airlines
Deal found 11/5$455
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:39 amSTL - DUB
2 stops19h 06mDelta
Thu 12/116:00 amDUB - STL
2 stops17h 10mDelta
Deal found 11/3$457
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:00 amSTL - DUB
1 stop19h 45mDelta
Tue 11/119:45 amDUB - STL
1 stop19h 38mDelta
Deal found 11/5$458
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:35 pmSTL - BCN
2 stops37h 00mUnited Airlines
Thu 12/111:35 pmBCN - STL
2 stops34h 28mUnited Airlines
Deal found 11/5$461
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:40 amSTL - DUB
2 stops20h 05mDelta
Sun 11/235:55 amDUB - STL
2 stops16h 54mDelta
Deal found 11/5$461
This KLM deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:12 pmSTL - BCN
1 stop32h 28mKLM
Thu 12/1110:55 amBCN - STL
1 stop17h 07mKLM
Deal found 11/4$464

Cheap flight deals from St. Louis to Europe

Keep the following information in mind while searching for St. Louis to Europe flight deals. Data was last updated November 6, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$433
(KLM)

One-way from

$167
(Trip.com)

Popular in

June

Cheapest in

December

Average price

$1,258

Good round-trip deal

$598 or less

Good one-way deal

$418 or less
Provider with most accurate pricing for Lambert-St Louis-Europe flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Europe flights.
Search Deals
From Lambert-St Louis to Europe
Search Deals
One-way flight from Lambert-St Louis to Europe
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Europe.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Europe.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from St. Louis to Europe that are best for you.

Fly from

St. Louis

Fly to

Europe

Route

Depart

Return

Price

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Tue 12/9

9:45 am-4:49 pm

1 stop13h 04m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

6:39 am-7:45 am

2 stops19h 06m

Dublin

Tue 12/9

9:45 am-11:29 pm

1 stop19h 44m

$438

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 2/2

9:59 am-8:45 am

2 stops16h 46m

Dublin

Tue 2/10

10:45 am-11:39 pm

2 stops18h 54m

$438

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Thu 12/11

6:00 am-5:10 pm

2 stops17h 10m

$452

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/16

9:33 am-7:45 am

1 stop16h 12m

Dublin

Sun 11/23

9:45 am-9:58 pm

1 stop18h 13m

$458

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 12/1

7:05 am-7:45 am

1 stop18h 40m

Dublin

Mon 12/8

9:45 am-5:56 pm

1 stop14h 11m

$458

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 12/4

8:30 am-8:20 am

1 stop16h 50m

Barcelona-El Prat

Thu 12/11

1:35 pm-10:45 pm

2 stops40h 10m

$461

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/6

6:40 pm-7:10 am

2 stops54h 30m

Dublin

Wed 1/21

9:00 am-5:18 pm

2 stops38h 18m

$462

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 11/27

12:49 pm-7:45 am

1 stop12h 56m

Dublin

Wed 12/3

11:30 am-9:57 pm

2 stops16h 27m

$463

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 12/4

5:12 pm-8:40 am

1 stop32h 28m

Barcelona-El Prat

Thu 12/11

10:55 am-9:02 pm

1 stop17h 07m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 60 results
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  • Most accurate provider: When it comes to deals on St. Louis-Europe flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on St. Louis-Europe flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from St. Louis-Europe flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Europe flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Europe flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Europe

Have a flexible travel schedule? Discover the best time to fly to Europe from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Europe

What is the cheapest month to book a flight from St. Louis to Europe?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Europe (average of $507). Flying from St. Louis to Europe in July is currently the most expensive (average of $709). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to EU?

Find hourly flight availability from St. Louis to Europe. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

When flying from St. Louis to Europe, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 13% versus a flight in the morning.

What is the cheapest day to fly from St. Louis to Europe?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Europe. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Europe flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Europe

Get insights into the airlines that provide service to Europe. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Europe. Reviews last updated November 6, 2025.
Read through reviews of airlines operating flights from St. Louis to Europe, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,007 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,040 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,416 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,558 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Europe. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Europe?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Europe. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from St. Louis to Europe?

    Departing from St. Louis to Europe will take you 16h 45m. Airlines will cover a distance of 3909 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from St. Louis to Europe one-way?

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as $303. Users have also found prices from $390 and $399 on British Airways and Air Canada, respectively.

  • What are the most popular routes from St. Louis to Europe?

    The most popular flight routes from St. Louis to Europe are Lambert-St Louis - London Heathrow, Lambert-St Louis - Frankfurt am Main and Lambert-St Louis - Rome Fiumicino.

  • Can I find deals for flights from St. Louis to Europe that include hotel bookings?

    Yes. In addition to deals on St. Louis to Europe flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Europe?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Europe.

  • Can I find deals for business class flights from St. Louis to Europe?

    Yes. Cheapflights offers flight deals from St. Louis to Europe by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Europe?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Europe (average of $507). Flying from St. Louis to Europe in July is currently the most expensive (average of $709). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Europe

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from St. Louis to Europe

Discover the top 10 airlines that operate flights from St. Louis to Europe. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$488Average$1,079FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$524Average$922FlexibilityNo cancel feeOn-time76%
KLMCheapest$529Average$894FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$546Average$941FlexibilityNo cancel feeOn-time70%
DeltaCheapest$552Average$934FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$573Average$1,066FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$578Average$947FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$582Average$967FlexibilityNo cancel feeOn-time77%
IberiaCheapest$586Average$908FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$602Average$1,041FlexibilityNo cancel feeOn-time77%

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