$192+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FCO
Sep 6 — Sep 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Leonardo da Vinci/Fiumicino with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Leonardo da Vinci/Fiumicino
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to Leonardo da Vinci/FiumicinoExplore 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 August 7, 2026.
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 August 7, 2026.
This oojo deal was found by Cheapflights users on 8/7. 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.
Sun 11/86:50 pm -
2 stops16h 10m
Wed 11/187:05 am -
1 stop13h 40m
Deal found 8/7![Lufthansa logo]()
$754
This KAYAK deal was found by Cheapflights users on 8/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:55 am -
2 stops18h 30m
Wed 8/2611:10 am -
2 stops20h 04m
Deal found 8/4![Aer Lingus logo]()
$757
This Trip.com deal was found by Cheapflights users on 8/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/64:05 pm -
1 stop33h 50m
Tue 12/2211:15 am -
1 stop35h 11m
Deal found 8/6![Air Canada logo]()
$758
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:40 am -
1 stop15h 05m
Wed 11/181:15 pm -
2 stops32h 15m
Deal found 8/4![United Airlines logo]()
$770
This Expedia deal was found by Cheapflights users on 8/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:50 pm -
2 stops16h 10m
Tue 11/177:05 am -
2 stops21h 47m
Deal found 8/5![Lufthansa logo]()
$771
This FlightHub deal was found by Cheapflights users on 8/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:30 am -
2 stops18h 25m
Wed 11/181:15 pm -
2 stops39h 25m
Deal found 8/3![Air Canada logo]()
$773
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:08 pm -
1 stop11h 37m
Tue 1/1211:15 am -
2 stops34h 15m
Deal found 8/4![United Airlines logo]()
$775
Best flights from St. Louis to Leonardo da Vinci/FiumicinoDiscover carefully curated flight deals from St. Louis to Leonardo da Vinci/Fiumicino that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2026.
Discover carefully curated flight deals from St. Louis to Leonardo da Vinci/Fiumicino that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2026.
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sun 1/316:30 am -
2 stops19h 25m
Thu 2/411:15 am -
2 stops34h 15m
Deal found 8/6![United Airlines logo]()
$773
This United deal was found by Cheapflights users on 8/6. 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.
Thu 9/2411:35 am -
1 stop13h 20m
Wed 10/76:50 am -
1 stop13h 35m
Deal found 8/6![Multiple Airlines logo]()
$1,029
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/294:05 pm -
1 stop11h 50m
Tue 1/51:30 pm -
1 stop31h 15m
Deal found 8/4![United Airlines logo]()
$871
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 10/612:10 pm -
1 stop14h 05m
Thu 10/1511:30 am -
2 stops35h 13m
Deal found 8/5![United Airlines logo]()
$959
This United Airlines deal was found by Cheapflights users on 8/2. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:30 am -
2 stops16h 45m
Wed 9/3011:30 am -
2 stops31h 43m
Deal found 8/2![United Airlines logo]()
$963
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:30 am -
2 stops17h 45m
Mon 9/141:20 pm -
1 stop31h 05m
Deal found 8/3![United Airlines logo]()
$992
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 9/56:54 pm -
1 stop30h 01m
Mon 9/141:20 pm -
1 stop31h 05m
Deal found 8/6![United Airlines logo]()
$1,000
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 9/54:50 pm -
1 stop31h 45m
Sun 9/206:50 am -
1 stop13h 35m
Deal found 8/6![United Airlines logo]()
$1,041
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 9/195:30 pm -
1 stop31h 25m
Sun 9/2710:00 am -
1 stop34h 25m
Deal found 8/5![United Airlines logo]()
$1,060
This United Airlines deal was found by Cheapflights users on 8/2. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:54 pm -
1 stop30h 01m
Sat 9/51:20 pm -
1 stop31h 05m
Deal found 8/2![United Airlines logo]()
$1,082
Last-minute flights from St. Louis to Leonardo da Vinci/FiumicinoDiscover last-minute flight deals from St. Louis to Leonardo da Vinci/Fiumicino. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Leonardo da Vinci/Fiumicino. Data last updated August 7, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 8/7. 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.
Mon 8/1012:10 pm -
1 stop14h 05m
Wed 8/269:35 am -
2 stops16h 07m
Deal found 8/7![Air Canada logo]()
$866
This Gotogate deal was found by Cheapflights users on 8/7. 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.
Mon 8/1012:10 pm -
1 stop14h 05m
Wed 8/266:50 am -
1 stop13h 35m
Deal found 8/7![Multiple Airlines logo]()
$872
This KAYAK deal was found by Cheapflights users on 8/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:55 am -
2 stops18h 30m
Wed 8/2611:10 am -
2 stops20h 04m
Deal found 8/4![Aer Lingus logo]()
$757
This KAYAK deal was found by Cheapflights users on 8/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:55 am -
2 stops18h 30m
Wed 9/27:30 am -
2 stops23h 44m
Deal found 8/2![Aer Lingus logo]()
$828
This Condor deal was found by Cheapflights users on 8/3. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 am -
2 stops31h 50m
Thu 9/108:10 am -
2 stops18h 35m
Deal found 8/3![Multiple Airlines logo]()
$822
This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 am -
2 stops31h 10m
Mon 9/285:10 pm -
2 stops27h 15m
Deal found 8/6![Multiple Airlines logo]()
$830
This Mytrip deal was found by Cheapflights users on 8/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:55 am -
2 stops25h 15m
Tue 10/610:45 pm -
3 stops26h 56m
Deal found 8/4![Multiple Airlines logo]()
$835
One-way flights from St. Louis to Leonardo da Vinci/FiumicinoSearch for one-way flight options from St. Louis to Leonardo da Vinci/Fiumicino. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
Search for one-way flight options from St. Louis to Leonardo da Vinci/Fiumicino. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This KAYAK deal was found by Cheapflights users on 8/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:55 am -
2 stops18h 30m
Deal found 8/3![Aer Lingus logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 10/1110:35 am -
3 stops51h 15m
Deal found 8/4![Multiple Airlines logo]()
$299
This KAYAK deal was found by Cheapflights users on 8/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:55 am -
2 stops18h 30m
Deal found 8/2![Aer Lingus logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:35 am -
3 stops49h 30m
Deal found 8/3![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:41 pm -
2 stops36h 49m
Deal found 8/3![Multiple Airlines logo]()
$341
This oojo deal was found by Cheapflights users on 8/6. 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.
Sun 11/86:50 pm -
2 stops16h 10m
Deal found 8/6![Lufthansa logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:29 pm -
2 stops41h 01m
Deal found 8/2![Multiple Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 8/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:43 pm -
2 stops16h 42m
Deal found 8/2![American Airlines logo]()
$357
Find 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 August 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $754 (oojo) |
One-way from | $192 (KAYAK) |
Popular in | June |
Cheapest in | February |
Average price | $1,039 |
Cheapflights Fare Finder
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 August 7, 2026.
Use the filters below to find and compare flights from St. Louis to Rome Fiumicino Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 1/31
6:30 am-8:55 am
2 stops19h 25m
Rome Fiumicino
Thu 2/4
11:15 am-2:30 pm
2 stops34h 15m
$773
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Tue 12/29
4:05 pm-10:55 am
1 stop11h 50m
Rome Fiumicino
Tue 1/5
1:30 pm-1:45 pm
1 stop31h 15m
$871
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Tue 10/6
12:10 pm-9:15 am
1 stop14h 05m
Rome Fiumicino
Thu 10/15
11:30 am-3:43 pm
2 stops35h 13m
$959
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 9/7
9:30 am-9:15 am
2 stops16h 45m
Rome Fiumicino
Wed 9/30
11:30 am-12:13 pm
2 stops31h 43m
$963
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 9/7
8:30 am-9:15 am
2 stops17h 45m
Rome Fiumicino
Mon 9/14
1:20 pm-1:25 pm
1 stop31h 05m
$992
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 9/5
6:54 pm-7:55 am
1 stop30h 01m
Rome Fiumicino
Mon 9/14
1:20 pm-1:25 pm
1 stop31h 05m
$1,000
Quickest round-trip
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Thu 9/24
11:35 am-7:55 am
1 stop13h 20m
Rome Fiumicino
Wed 10/7
6:50 am-1:25 pm
1 stop13h 35m
$1,029
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 9/5
4:50 pm-7:35 am
1 stop31h 45m
Rome Fiumicino
Sun 9/20
6:50 am-1:25 pm
1 stop13h 35m
$1,041
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 9/19
5:30 pm-7:55 am
1 stop31h 25m
Rome Fiumicino
Sun 9/27
10:00 am-1:25 pm
1 stop34h 25m
$1,060
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 8/29
6:54 pm-7:55 am
1 stop30h 01m
Rome Fiumicino
Sat 9/5
1:20 pm-1:25 pm
1 stop31h 05m
$1,082
Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
STL-FCO
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 Rome Fiumicino Airport
How far ahead should I book a flight from St. Louis to Rome Fiumicino Airport?
To ensure you get the cheapest price possible for a flight from St. Louis to Rome Fiumicino Airport, you should look to book at least 49 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from St. Louis to Rome Fiumicino Airport?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Rome Fiumicino Airport (average of $634). Flying from St. Louis to Rome Fiumicino Airport in June is currently the most expensive (average of $1,686). 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.
How much does it cost to fly round-trip from St. Louis to Rome Fiumicino Airport?
Airfare is below average for this route at the moment.
St. Louis to Rome Fiumicino Airport flights typically cost between $857 and $1,164 in November.The cheapest round-trip price found within the last 5 days was $754 on Lufthansa (Nov 8-Nov 18).
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 August 7, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from St. Louis to Rome Fiumicino Airport 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.
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near Rome Fiumicino Airport?
Book flights to Rome Fiumicino Airport if you plan to visit one of these locationsFiumicino
Civitavecchia
Montepulciano
Santa Marinella
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Leonardo da Vinci/Fiumicino flight routes
Other flight options
Other flights from St. Louis
Popular flights
Alternative routes for St. Louis to Leonardo da Vinci/Fiumicino
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Leonardo da Vinci/Fiumicino by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Leonardo da Vinci/Fiumicino by cabin class
Find flights from St. Louis to Leonardo da Vinci/Fiumicino, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Leonardo da Vinci/Fiumicino
Explore flights to Leonardo da Vinci/Fiumicino departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 7, 2026.
St. Louis and Leonardo da Vinci/Fiumicino flights
Browse other St. Louis and Leonardo da Vinci/Fiumicino flight options. Last updated on August 7, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on August 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from St. Louis to Leonardo da Vinci/Fiumicino
Discover the top 7 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 August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$472 | Average$1,200 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$500 | Average$913 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$506 | Average$884 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$587 | Average$1,126 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$618 | Average$1,164 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$778 | Average$1,085 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$810 | Average$1,225 | FlexibilityNo cancel fee | On-time67% |