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St. Louis

$611+ Cheap flights from Fiumicino (FCO) to St. Louis (STL)

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
FCO — STL
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Leonardo da Vinci/Fiumicino to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Leonardo da Vinci/Fiumicino (FCO) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$837
(Orbitz)

One-way from

$611
(Ovago)

Popular in

December

Cheapest in

April

Average price

$1,046
From Rome Fiumicino to Lambert-St Louis
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One-way flight from Rome Fiumicino to Lambert-St Louis
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Highest demand for flights based on searches. 5% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Leonardo da Vinci/Fiumicino to St. Louis

Cheapest flights from Leonardo da Vinci/Fiumicino to St. Louis
Explore the most affordable flight options available from Leonardo da Vinci/Fiumicino to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:40 amFCO - STL
2 stops35h 04mAmerican Airlines
Mon 12/111:51 amSTL - FCO
2 stops22h 04mAmerican Airlines
Deal found 7/28$793
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/273:45 pmFCO - STL
2 stops35h 15mBritish Airways
Mon 12/110:45 amSTL - FCO
1 stop15h 15mBritish Airways
Deal found 7/28$807
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.
Thu 11/271:30 pmFCO - STL
1 stop31h 25mUnited Airlines
Mon 12/110:00 amSTL - FCO
1 stop14h 45mUnited Airlines
Deal found 7/28$811
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2112:00 pmFCO - STL
2 stops28h 12mIberia
Mon 11/242:50 pmSTL - FCO
2 stops17h 40mIberia
Deal found 7/28$837
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.
Sun 9/216:05 amFCO - STL
2 stops17h 43mDelta
Mon 11/2411:51 amSTL - FCO
1 stop13h 04mDelta
Deal found 7/28$852
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.
Sun 9/217:10 amFCO - STL
1 stop13h 20mLufthansa
Mon 11/2411:49 amSTL - FCO
1 stop16h 06mLufthansa
Deal found 7/28$889
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/139:00 amFCO - STL
1 stop14h 35mMultiple Airlines
Sun 8/172:15 pmSTL - FCO
1 stop12h 05mMultiple Airlines
Deal found 7/28$995
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1311:30 amFCO - STL
2 stops18h 15mAir Canada
Sun 8/174:00 pmSTL - FCO
2 stops15h 15mAir Canada
Deal found 7/28$1,159

Cheapflights Fare Finder

 
Customize your flight search to find flights from Leonardo da Vinci/Fiumicino to St. Louis 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 29, 2025.
Use the filters below to find and compare flights from Rome Fiumicino Airport to St. Louis that are best for you.

Fly from

Leonardo da Vinci/Fiumicino

Fly to

St. Louis

Route

Depart

Return

Price

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sun 9/21

12:00 pm-9:12 am

2 stops28h 12m

Lambert-St Louis

Mon 11/24

2:50 pm-3:30 pm

2 stops17h 40m

$837

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sun 9/21

6:05 am-4:48 pm

2 stops17h 43m

Lambert-St Louis

Mon 11/24

11:51 am-7:55 am

1 stop13h 04m

$852

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sun 9/21

7:10 am-1:30 pm

1 stop13h 20m

Lambert-St Louis

Mon 11/24

11:49 am-10:55 am

1 stop16h 06m

$889

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/13

9:00 am-4:35 pm

1 stop14h 35m

Lambert-St Louis

Sun 8/17

2:15 pm-9:20 am

1 stop12h 05m

$995

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sat 8/9

3:20 pm-9:59 am

1 stop25h 39m

Lambert-St Louis

Fri 8/29

3:20 pm-5:05 pm

2 stops18h 45m

$1,042

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/13

1:50 pm-11:59 pm

1 stop17h 09m

Lambert-St Louis

Sun 8/17

9:08 am-7:05 am

2 stops14h 57m

$1,085

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/13

9:00 pm-8:18 pm

2 stops30h 18m

Lambert-St Louis

Sun 8/17

1:42 pm-9:10 am

1 stop12h 28m

$1,129

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/13

11:30 am-10:45 pm

2 stops18h 15m

Lambert-St Louis

Sun 8/17

4:00 pm-2:15 pm

2 stops15h 15m

$1,159

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 9/26

7:30 am-9:53 pm

2 stops21h 23m

$611

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Mon 9/29

10:55 am-2:27 pm

2 stops34h 32m

$705

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 14 results
1
2

Best time to book a flight from Leonardo da Vinci/Fiumicino to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Leonardo da Vinci/Fiumicino 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 Rome Fiumicino Airport to St. Louis

How much does it cost to fly round-trip from Rome Fiumicino Airport to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Turkish Airlines from Rome Fiumicino Airport to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Turkish Airlines
7.3
Good
3,925 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Canada
7.1
Good
9,826 reviews
Delta
8.0
Very good
7,979 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Leonardo da Vinci/Fiumicino to St. Louis. 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 into for flights to St. Louis from Rome Fiumicino?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Rome Fiumicino. On average, Lambert-St Louis has 0 inbound flights from Rome Fiumicino per day from 0 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the cheapest airlines flying from Rome Fiumicino Airport to St. Louis round-trip?

    Cheapflights users have booked flights from Rome Fiumicino Airport to St. Louis round-trip from $837. Other airlines that can offer you cheap pricing are Delta, from $852, and Lufthansa, from $889. Iberia is priced at 11% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $611 on Aer Lingus. Other airlines that offer cheap prices include Turkish Airlines from $705 and Lufthansa from $795 one-way.

  • Can I find deals for flights from Leonardo da Vinci/Fiumicino to St. Louis that include hotel bookings?

    Yes. In addition to deals on Leonardo da Vinci/Fiumicino to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Leonardo da Vinci/Fiumicino to St. Louis?

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

  • Can I find deals for business class flights from Leonardo da Vinci/Fiumicino to St. Louis?

    Yes. Cheapflights offers flight deals from Leonardo da Vinci/Fiumicino to St. Louis 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 Rome Fiumicino Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Rome Fiumicino Airport to St. Louis (average of $311). Flying from Rome Fiumicino Airport to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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