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St. Louis

$444+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
FCO — STL
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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Find cheap flights from Leonardo da Vinci/Fiumicino to St. Louis with Cheapflights

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Cheap 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 April 28, 2026.

This lol.travel deal was found by Cheapflights users on 4/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/141:10 pm
FCO
-
STL
1 stop16h 49m
British Airways
Mon 5/1812:27 pm
STL
-
FCO
1 stop13h 43m
British Airways
Deal found 4/27$913
This lol.travel deal was found by Cheapflights users on 4/25. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:40 pm
FCO
-
STL
2 stops31h 50m
Finnair
Mon 11/231:20 pm
STL
-
FCO
1 stop14h 25m
Finnair
Deal found 4/25$933
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 5/86:50 am
FCO
-
STL
1 stop13h 35m
United Airlines
Tue 5/128:46 am
STL
-
FCO
1 stop20h 34m
United Airlines
Deal found 4/23$950
This United Airlines deal was found by Cheapflights users on 4/23. 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 10/297:05 am
FCO
-
STL
2 stops18h 20m
United Airlines
Mon 11/28:15 pm
STL
-
FCO
1 stop28h 30m
United Airlines
Deal found 4/23$953
This Condor deal was found by Cheapflights users on 4/25. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:10 am
FCO
-
STL
2 stops19h 20m
Multiple Airlines
Tue 6/1610:15 am
STL
-
FCO
2 stops28h 35m
Multiple Airlines
Deal found 4/25$956
This Gotogate deal was found by Cheapflights users on 4/24. 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 5/98:00 am
FCO
-
STL
2 stops19h 09m
Air Canada
Wed 5/131:05 pm
STL
-
FCO
1 stop13h 10m
Air Canada
Deal found 4/24$961
This British Airways deal was found by Cheapflights users on 4/23. 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.
Fri 5/810:00 am
FCO
-
STL
1 stop13h 41m
British Airways
Tue 5/122:33 pm
STL
-
FCO
2 stops15h 22m
British Airways
Deal found 4/23$963

Find 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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$913
(lol.travel)

One-way from

$444
(Kiwi.com)

Popular in

November

Cheapest in

February

Average price

$872
Provider with most accurate pricing for Rome Fiumicino-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rome Fiumicino-Lambert-St Louis flights.
Search Deals
From Rome Fiumicino to Lambert-St Louis
Search Deals
One-way flight from Rome Fiumicino to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($189 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 28, 2026.
Use the filters below to find and compare flights from Rome Fiumicino Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 5/14

10:00 am-7:33 pm

1 stop16h 33m

Lambert-St Louis

Mon 5/18

12:27 pm-9:10 am

1 stop13h 43m

$973

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/5

12:15 pm-11:23 pm

1 stop18h 08m

Lambert-St Louis

Tue 9/29

9:35 pm-8:05 pm

1 stop15h 30m

$1,049

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 7/2

12:45 pm-11:56 pm

2 stops18h 11m

Lambert-St Louis

Mon 12/14

5:45 pm-3:15 pm

2 stops14h 30m

$1,050

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 7/3

10:00 am-11:56 pm

2 stops20h 56m

Lambert-St Louis

Mon 12/14

5:45 pm-5:25 pm

2 stops16h 40m

$1,054
Quickest round-trip

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 7/1

12:30 pm-11:56 pm

2 stops18h 26m

Lambert-St Louis

Tue 12/15

1:30 pm-8:15 am

1 stop11h 45m

$1,059

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 7/2

1:10 pm-9:46 am

1 stop27h 36m

Lambert-St Louis

Wed 12/16

6:45 am-9:35 am

1 stop19h 50m

$1,060
Cheapest one-way

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 9/9

11:05 am-11:20 pm

1 stop19h 15m

$597
Quickest one-way

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Tue 10/6

11:05 am-8:08 pm

1 stop16h 03m

$599

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sun 8/23

1:10 pm-10:25 pm

1 stop16h 15m

$601

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Mon 9/28

7:10 am-6:58 pm

2 stops18h 48m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Sorted by cheapest first

Compare providers for flights from Leonardo da Vinci/Fiumicino to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Leonardo da Vinci/Fiumicino to St. Louis in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Rome Fiumicino Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rome Fiumicino Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rome Fiumicino Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rome Fiumicino Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Rome Fiumicino Airport-St. Louis 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 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?

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.

  • How long is the flight from Rome Fiumicino Airport to St. Louis?

    For as low as $973, Iberia can have you in St. Louis from Rome Fiumicino Airport in 16h 33m. The distance between Rome Fiumicino Airport and St. Louis is about 5050 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $546 on American Airlines. Other airlines that offer cheap prices include British Airways from $596 and Aer Lingus from $603 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.

See more FAQs

Traveling to a place near St. Louis?

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