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$244+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CPH
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$473
(United Airlines)

One-way from

$244
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$1,241

Good round-trip deal

$970 or less

Good one-way deal

$512 or less
From Lambert-St Louis to Europe
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One-way flight from Lambert-St Louis to Europe
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Highest demand for flights based on searches. 15% potential increase in price ($199 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Europe.
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Price to beat on a one-way flight from Lambert-St Louis to Europe.
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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 July 30, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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 9/31:10 pmSTL - DUB
1 stop12h 00mUnited Airlines
Wed 9/179:50 amDUB - STL
1 stop15h 48mUnited Airlines
Deal found 7/28$467
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/39:15 amSTL - DUB
2 stops16h 30mAir Canada
Wed 9/179:50 amDUB - STL
2 stops40h 07mAir Canada
Deal found 7/28$470
This Gotogate deal was found by Cheapflights users on 7/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:20 pmSTL - DUB
1 stop28h 50mMultiple Airlines
Sat 11/19:15 amDUB - STL
1 stop34h 40mMultiple Airlines
Deal found 7/28$474
This Iberia deal was found by Cheapflights users on 7/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:51 amSTL - DUB
2 stops15h 04mIberia
Sun 11/912:55 pmDUB - STL
1 stop15h 34mIberia
Deal found 7/30$476
This Delta deal was found by Cheapflights users on 7/28. 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 8/196:00 amSTL - DUB
1 stop19h 55mDelta
Mon 8/256:00 amDUB - STL
2 stops19h 07mDelta
Deal found 7/28$486
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/269:23 amSTL - DUB
1 stop18h 22mAmerican Airlines
Tue 9/29:30 amDUB - STL
2 stops13h 26mAmerican Airlines
Deal found 7/29$487
This Gurufare deal was found by Cheapflights users on 7/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/211:50 amSTL - DUB
1 stop16h 05mLufthansa
Wed 12/105:10 amDUB - STL
1 stop14h 45mLufthansa
Deal found 7/30$495
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 12/89:00 amSTL - MXP
2 stops17h 55mUnited Airlines
Tue 12/161:05 pmMXP - STL
2 stops32h 20mUnited Airlines
Deal found 7/27$507
This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/34:05 pmSTL - MXP
2 stops34h 50mAir Canada
Sun 12/71:05 pmMXP - STL
2 stops32h 18mAir Canada
Deal found 7/29$509
This Ovago deal was found by Cheapflights users on 7/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2612:20 pmSTL - DUB
2 stops15h 30mBritish Airways
Tue 9/210:30 amDUB - STL
2 stops15h 55mBritish Airways
Deal found 7/29$509
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:25 pmSTL - MXP
2 stops14h 35mMultiple Airlines
Sat 11/17:00 amMXP - STL
2 stops16h 39mMultiple Airlines
Deal found 7/29$528
This KLM deal was found by Cheapflights users on 7/27. 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.
Mon 8/2510:45 amSTL - DUB
1 stop17h 15mKLM
Mon 9/112:00 pmDUB - STL
1 stop17h 24mKLM
Deal found 7/27$543

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 July 30, 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

Wed 9/3

1:10 pm-7:10 am

1 stop12h 00m

Dublin

Wed 9/17

9:50 am-7:38 pm

1 stop15h 48m

$467

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/3

9:15 am-7:45 am

2 stops16h 30m

Dublin

Wed 9/17

9:50 am-7:57 pm

2 stops40h 07m

$470

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 10/25

8:20 pm-6:10 am

1 stop28h 50m

Dublin

Sat 11/1

9:15 am-2:55 pm

1 stop34h 40m

$474

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/8

7:59 pm-11:40 am

1 stop9h 41m

Dublin

Fri 9/19

12:40 pm-10:50 pm

1 stop16h 10m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/19

6:00 am-7:55 am

1 stop19h 55m

Dublin

Mon 8/25

6:00 am-7:07 pm

2 stops19h 07m

$486

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/26

9:23 am-9:45 am

1 stop18h 22m

Dublin

Tue 9/2

9:30 am-4:56 pm

2 stops13h 26m

$487

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/26

12:20 pm-9:50 am

2 stops15h 30m

Dublin

Tue 9/2

10:30 am-8:25 pm

2 stops15h 55m

$509

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Tue 10/21

11:39 am-7:30 am

1 stop12h 51m

Milan Malpensa

Tue 11/4

1:05 pm-9:40 pm

2 stops39h 35m

$513

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

Fri 10/17

12:25 pm-10:00 am

2 stops14h 35m

Milan Malpensa

Sat 11/1

7:00 am-5:39 pm

2 stops16h 39m

$528

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 8/25

10:45 am-10:00 am

1 stop17h 15m

Dublin

Mon 9/1

12:00 pm-11:24 pm

1 stop17h 24m

$543

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 60 results
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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 $523). Flying from St. Louis to Europe in June is currently the most expensive (average of $912). 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 July 30, 2025.

When flying from St. Louis to Europe, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 30, 2025.
Read through reviews of airlines operating flights from St. Louis to Europe, such as Delta, KLM, and Austrian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $381. Users have also found prices from $394 and $398 on United Airlines and Aer Lingus, 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 - Frankfurt am Main, Lambert-St Louis - London Heathrow and Lambert-St Louis - London Gatwick.

  • 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 $523). Flying from St. Louis to Europe in June is currently the most expensive (average of $912). 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$468Average$906FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$527Average$964FlexibilityNo cancel feeOn-time76%
DeltaCheapest$533Average$976FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$545Average$941FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$567Average$960FlexibilityNo cancel feeOn-time69%
IberiaCheapest$568Average$925FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$576Average$1,072FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$603Average$1,042FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$611Average$1,297FlexibilityNo cancel feeOn-time78%
Air CanadaCheapest$626Average$1,078FlexibilityNo cancel feeOn-time67%

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