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Leonardo da Vinci/Fiumicino

$357+ Cheap flights from St. Louis (STL) to Fiumicino (FCO)

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FCO
mar. 8 — mar. 151
sáb. 3/8
sáb. 3/15
1 adult, Economy
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The best prices from Lambert-St Louis to Rome Fiumicino are usually found in January or February, booked 1 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap flight deals from St. Louis to Leonardo da Vinci/Fiumicino

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Leonardo da Vinci/Fiumicino (FCO). 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 marzo 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$617
(United)

One-way from

$357
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,167
Provider with most accurate pricing for Lambert-St Louis-Rome Fiumicino flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Rome Fiumicino flights.
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From Lambert-St Louis to Rome Fiumicino
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One-way flight from Lambert-St Louis to Rome Fiumicino
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Highest demand for flights based on searches. 25% potential increase in price ($367 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from St. Louis to Leonardo da Vinci/Fiumicino

Cheapest flights from St. Louis to Leonardo da Vinci/Fiumicino
Explore the most affordable flight options available from St. Louis to Leonardo da Vinci/Fiumicino. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 3, 2025.

This United deal was found by Cheapflights users on 3/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/308:25 amSTL - FCO
1 stop16h 50mUnited Airlines
mar. 4/811:30 amFCO - STL
3 stops35h 17mUnited Airlines
Deal found 3/2$617
This Gotogate deal was found by Cheapflights users on 3/2. 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.
lun. 3/243:50 pmSTL - FCO
2 stops16h 10mAir Canada
mié. 4/912:25 pmFCO - STL
1 stop33h 24mAir Canada
Deal found 3/2$623
This KLM deal was found by Cheapflights users on 3/2. 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.
lun. 3/2410:19 amSTL - FCO
1 stop17h 06mKLM
mié. 4/911:35 amFCO - STL
1 stop18h 55mKLM
Deal found 3/2$627
This Cheapflightsfares deal was found by Cheapflights users on 3/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/111:55 amSTL - FCO
1 stop14h 15mIberia
mar. 4/810:00 amFCO - STL
1 stop19h 28mIberia
Deal found 3/2$628
This Air Canada deal was found by Cheapflights users on 3/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/44:15 pmSTL - FCO
2 stops34h 45mMultiple Airlines
mar. 11/189:40 amFCO - STL
2 stops36h 46mMultiple Airlines
Deal found 3/3$639
This Delta deal was found by Cheapflights users on 3/2. 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.
mié. 3/266:00 amSTL - FCO
2 stops18h 05mDelta
mié. 4/211:35 amFCO - STL
1 stop18h 56mDelta
Deal found 3/2$645
This Finnair deal was found by Cheapflights users on 3/3. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/31:55 pmSTL - FCO
2 stops21h 00mFinnair
lun. 11/176:40 pmFCO - STL
2 stops30h 37mFinnair
Deal found 3/3$656
This Expedia deal was found by Cheapflights users on 3/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/236:06 amSTL - FCO
1 stop20h 04mBritish Airways
vie. 10/318:00 pmFCO - STL
2 stops28h 03mBritish Airways
Deal found 3/2$765
This KAYAK deal was found by Cheapflights users on 3/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/273:30 pmSTL - FCO
2 stops20h 15mScandinavian Airlines
mié. 9/37:35 pmFCO - STL
2 stops35h 04mScandinavian Airlines
Deal found 3/1$790
This Lufthansa deal was found by Cheapflights users on 3/2. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/53:45 pmSTL - FCO
1 stop14h 00mLufthansa
lun. 3/106:45 pmFCO - STL
2 stops34h 47mLufthansa
Deal found 3/2$864
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/99:50 amSTL - FCO
2 stops17h 35mAer Lingus
mar. 9/2311:10 amFCO - STL
2 stops19h 15mAer Lingus
Deal found 3/3$980
This oojo deal was found by Cheapflights users on 3/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/66:30 amSTL - FCO
2 stops24h 20mTurkish Airlines
sáb. 3/82:50 pmFCO - STL
2 stops30h 41mTurkish Airlines
Deal found 3/2$1,039

Find flights from St. Louis to Leonardo da Vinci/Fiumicino within your budget

Customize your flight search to find flights from St. Louis to Leonardo da Vinci/Fiumicino 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 marzo 3, 2025.

Fly from

St. Louis

Fly to

Leonardo da Vinci/Fiumicino

Route

Depart

Return

Price

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 3/30

8:25 am-8:15 am

1 stop16h 50m

Rome Fiumicino

mar. 4/8

11:30 am-3:47 pm

3 stops35h 17m

$617

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

lun. 3/24

3:50 pm-2:00 pm

2 stops16h 10m

Rome Fiumicino

mié. 4/9

12:25 pm-2:49 pm

1 stop33h 24m

$623

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 4/1

4:44 pm-7:35 am

1 stop31h 51m

Rome Fiumicino

mar. 4/8

11:30 am-2:49 pm

2 stops34h 19m

$625

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

lun. 3/24

10:19 am-9:25 am

1 stop17h 06m

Rome Fiumicino

mié. 4/9

11:35 am-11:30 pm

1 stop18h 55m

$627

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 4/1

11:55 am-9:10 am

1 stop14h 15m

Rome Fiumicino

mar. 4/8

10:00 am-10:28 pm

1 stop19h 28m

$628

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 3/26

6:00 am-6:05 am

2 stops18h 05m

Rome Fiumicino

mié. 4/2

11:35 am-11:31 pm

1 stop18h 56m

$645

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

sáb. 4/5

5:27 pm-8:05 am

1 stop31h 38m

Rome Fiumicino

dom. 4/13

9:00 pm-8:58 pm

2 stops30h 58m

$816

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

jue. 4/10

10:17 am-9:10 am

1 stop15h 53m

Rome Fiumicino

mar. 4/22

12:10 pm-7:23 pm

1 stop14h 13m

$870

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

jue. 3/6

6:30 am-1:50 pm

2 stops24h 20m

Rome Fiumicino

sáb. 3/8

2:50 pm-2:31 pm

2 stops30h 41m

$1,039

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

jue. 3/13

11:24 am-11:45 am

2 stops18h 21m

Rome Fiumicino

sáb. 3/22

12:50 pm-4:48 pm

2 stops33h 58m

$1,455

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 21 results
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Compare providers for flights from St. Louis to Leonardo da Vinci/Fiumicino

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 St. Louis to Leonardo da Vinci/Fiumicino in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 St. Louis-Rome Fiumicino Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Rome Fiumicino Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Rome Fiumicino Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Rome Fiumicino Airport 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 St. Louis-Rome Fiumicino Airport 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 Leonardo da Vinci/Fiumicino

Have a flexible travel schedule? Discover the best time to fly to Leonardo da Vinci/Fiumicino 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.

Travel insights for flights from St. Louis to Leonardo da Vinci/Fiumicino

Get recent, data-driven insights about flights from St. Louis to Leonardo da Vinci/Fiumicino including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Rome Fiumicino Airport?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Rome Fiumicino Airport (average of $644). Flying from St. Louis to Rome Fiumicino Airport in June is currently the most expensive (average of $1,231). 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 FCO?

Find hourly flight availability from St. Louis to Leonardo da Vinci/Fiumicino. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 3, 2025.

It’s optimal to fly from St. Louis to Rome Fiumicino Airport in the afternoon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the morning.

Rainfall in Leonardo da Vinci/Fiumicino by month

Plan your trip to Leonardo da Vinci/Fiumicino by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Rome Fiumicino Airport ranges from 0.6 - 4.4 inches per month. November is typically the wettest month, when rainfall can reach 4.4 in. June is typically the driest time to visit Rome Fiumicino Airport when rainfall is around 0.6 in.

Temperature in Leonardo da Vinci/Fiumicino by month

Plan your trip to Leonardo da Vinci/Fiumicino by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Rome Fiumicino Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

Reviews of airlines servicing Leonardo da Vinci/Fiumicino

Get insights into the airlines that provide service to Leonardo da Vinci/Fiumicino. 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 Leonardo da Vinci/Fiumicino. Reviews last updated marzo 3, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from St. Louis to Rome to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,070 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,070 reviews
Delta
8.0
Very good
8,070 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,322 reviews
Delta
8.0
Very good
8,070 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very good
8,070 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,435 reviews
Delta
8.0
Very good
8,070 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,679 reviews
Delta
8.0
Very good
8,070 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Rome Fiumicino. You should not have trouble finding flights to Rome Fiumicino from Lambert-St Louis; the airport handles an average of 0 outbound flights to Rome Fiumicino per day. You should also have plenty of airline options to choose from since 8 airlines have flights from the St. Louis airport to Rome Fiumicino. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    Our cheapest airline available from St. Louis to Rome Fiumicino Airport is United Airlines. Our recent data shows that you can find tickets from as low as $617 on this airline. Additional options worth looking into are Air Canada and KLM, starting at $623 and $627 round-trip. United Airlines is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Scandinavian Airlines, which is currently one of the cheapest options available, starting at $478. Aer Lingus flights start at $561 while deals on American Airlines start at $608 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Rome Fiumicino Airport (average of $644). Flying from St. Louis to Rome Fiumicino Airport in June is currently the most expensive (average of $1,231). 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
Fiumicino
Gaeta
Ciampino
Montepulciano
Ponza

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Top 8 airlines flying from St. Louis to Leonardo da Vinci/Fiumicino

Discover the top 8 airlines that operate flights from St. Louis to Leonardo da Vinci/Fiumicino. 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 marzo 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$630Average$1,086FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$668Average$958FlexibilityNo cancel feeOn-time76%
DeltaCheapest$670Average$1,018FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$688Average$1,208FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$721Average$1,154FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$727Average$1,117FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$738Average$1,158FlexibilityNo cancel feeOn-time67%
KLMCheapest$800Average$1,171FlexibilityNo cancel feeOn-time75%
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