$356+ 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FCO
Jul 10 — Jul 171
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Leonardo da Vinci/Fiumicino with Cheapflights
1. Tell us where you want to go
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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
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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 June 10, 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 June 10, 2026.
This FlightHub deal was found by Cheapflights users on 6/10. 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 11/84:15 pm
STL
- FCO
1 stop33h 40m
Air Canada
Wed 11/181:15 pm
FCO
- STL
2 stops32h 03m
Air Canada
Deal found 6/10![Air Canada logo]()
$774
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
Mon 11/96:45 pm
STL
- FCO
2 stops21h 15m
Lufthansa
Wed 11/187:05 am
FCO
- STL
1 stop13h 40m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$775
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Mon 11/94:15 pm
STL
- FCO
2 stops57h 40m
Air Canada
Wed 11/181:15 pm
FCO
- STL
2 stops42h 19m
Air Canada
Deal found 6/10![Air Canada logo]()
$777
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/86:40 am
STL
- FCO
1 stop18h 05m
United Airlines
Wed 11/187:05 am
FCO
- STL
1 stop13h 40m
United Airlines
Deal found 6/10![United Airlines logo]()
$778
This oojo deal was found by Cheapflights users on 6/8. 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 11/83:40 pm
STL
- FCO
1 stop14h 00m
Lufthansa
Wed 11/187:05 am
FCO
- STL
1 stop13h 40m
Lufthansa
Deal found 6/8![Lufthansa logo]()
$779
This FlightHub deal was found by Cheapflights users on 6/8. 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.
Sat 9/123:42 pm
STL
- FCO
2 stops19h 53m
Scandinavian Airlines
Fri 9/187:25 pm
FCO
- STL
2 stops35h 11m
Scandinavian Airlines
Deal found 6/8![Scandinavian Airlines logo]()
$780
This oojo deal was found by Cheapflights users on 6/9. 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.
Mon 11/911:39 am
STL
- FCO
1 stop16h 06m
British Airways
Fri 11/201:00 pm
FCO
- STL
1 stop16h 29m
British Airways
Deal found 6/9![British Airways logo]()
$781
This FlightHub deal was found by Cheapflights users on 6/10. 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 12/65:18 pm
STL
- FCO
2 stops32h 37m
Air Canada
Wed 12/91:15 pm
FCO
- STL
2 stops40h 39m
Air Canada
Deal found 6/10![Air Canada logo]()
$783
This Trip.com deal was found by Cheapflights users on 6/9. 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.
Mon 8/312:10 pm
STL
- FCO
1 stop14h 05m
Air Canada
Wed 8/192:20 pm
FCO
- STL
1 stop35h 22m
Air Canada
Deal found 6/9![Air Canada logo]()
$785
This FlightHub deal was found by Cheapflights users on 6/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:15 pm
STL
- FCO
2 stops57h 40m
Multiple Airlines
Wed 11/187:05 am
FCO
- STL
1 stop13h 40m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$786
This United Airlines deal was found by Cheapflights users on 6/8. 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 11/1011:45 am
STL
- FCO
1 stop16h 10m
United Airlines
Tue 11/177:05 am
FCO
- STL
2 stops15h 25m
United Airlines
Deal found 6/8![United Airlines logo]()
$787
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 June 10, 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 June 10, 2026.
This Condor deal was found by Cheapflights users on 6/10. 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 9/110:25 am
STL
- FCO
2 stops28h 25m
Multiple Airlines
Tue 9/88:10 am
FCO
- STL
2 stops18h 30m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$824
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:33 am
STL
- FCO
2 stops17h 52m
Delta
Wed 8/196:30 am
FCO
- STL
2 stops15h 40m
Delta
Deal found 6/6![Delta logo]()
$828
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/211:45 am
STL
- FCO
1 stop13h 10m
United Airlines
Wed 11/187:05 am
FCO
- STL
1 stop13h 40m
United Airlines
Deal found 6/10![United Airlines logo]()
$845
This British Airways deal was found by Cheapflights users on 6/8. 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.
Mon 7/67:07 am
STL
- FCO
1 stop21h 58m
British Airways
Fri 7/1710:00 am
FCO
- STL
1 stop29h 31m
British Airways
Deal found 6/8![British Airways logo]()
$916
This Scandinavian Airlines deal was found by Cheapflights users on 6/8. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:04 pm
STL
- FCO
3 stops23h 16m
Scandinavian Airlines
Sun 9/209:30 am
FCO
- STL
2 stops21h 06m
Scandinavian Airlines
Deal found 6/8![Scandinavian Airlines logo]()
$1,767
This United Airlines deal was found by Cheapflights users on 6/5. 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.
Mon 9/2112:10 pm
STL
- FCO
1 stop14h 05m
United Airlines
Wed 9/3011:30 am
FCO
- STL
2 stops33h 47m
United Airlines
Deal found 6/5![United Airlines logo]()
$903
This Condor deal was found by Cheapflights users on 6/8. 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 8/2510:25 am
STL
- FCO
2 stops28h 25m
Multiple Airlines
Wed 9/28:10 am
FCO
- STL
2 stops18h 30m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$910
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:45 pm
STL
- FCO
2 stops14h 40m
Delta
Tue 9/226:30 am
FCO
- STL
2 stops21h 05m
Delta
Deal found 6/7![Delta logo]()
$933
This United deal was found by Cheapflights users on 6/6. 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.
Sat 10/103:11 pm
STL
- FCO
1 stop33h 44m
Multiple Airlines
Sat 10/1712:25 pm
FCO
- STL
1 stop32h 35m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$970
This United deal was found by Cheapflights users on 6/7. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:54 pm
STL
- FCO
1 stop30h 01m
Multiple Airlines
Sat 9/121:20 pm
FCO
- STL
1 stop31h 05m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,033
This British Airways deal was found by Cheapflights users on 6/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:25 pm
STL
- FCO
2 stops19h 20m
British Airways
Wed 9/91:30 pm
FCO
- STL
1 stop16h 12m
British Airways
Deal found 6/6![British Airways logo]()
$4,688
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 June 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Leonardo da Vinci/Fiumicino. Data last updated June 10, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 6/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/712:10 pm
STL
- FCO
1 stop14h 05m
Multiple Airlines
Tue 7/142:20 pm
FCO
- STL
1 stop30h 42m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$881
This oojo deal was found by Cheapflights users on 6/9. 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.
Tue 7/712:40 pm
STL
- FCO
2 stops17h 15m
British Airways
Tue 7/1412:15 pm
FCO
- STL
1 stop18h 17m
British Airways
Deal found 6/9![British Airways logo]()
$883
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/712:10 pm
STL
- FCO
1 stop14h 05m
United Airlines
Tue 7/1411:30 am
FCO
- STL
2 stops40h 56m
United Airlines
Deal found 6/9![United Airlines logo]()
$889
This Expedia deal was found by Cheapflights users on 6/8. 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.
Wed 7/812:10 pm
STL
- FCO
1 stop14h 05m
Air Canada
Wed 7/152:20 pm
FCO
- STL
1 stop35h 22m
Air Canada
Deal found 6/8![Air Canada logo]()
$882
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
Wed 7/83:30 pm
STL
- FCO
1 stop19h 20m
Lufthansa
Wed 7/156:50 am
FCO
- STL
1 stop13h 35m
Lufthansa
Deal found 6/9![Lufthansa logo]()
$899
This oojo deal was found by Cheapflights users on 6/10. 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.
Wed 7/812:40 pm
STL
- FCO
1 stop14h 40m
British Airways
Wed 7/1510:00 am
FCO
- STL
1 stop21h 16m
British Airways
Deal found 6/10![British Airways logo]()
$900
This Mytrip deal was found by Cheapflights users on 6/6. 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.
Sun 7/1912:10 pm
STL
- FCO
1 stop16h 35m
Air Canada
Fri 7/3112:25 pm
FCO
- STL
2 stops30h 46m
Air Canada
Deal found 6/6![Air Canada logo]()
$894
This United Airlines deal was found by Cheapflights users on 6/6. 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 7/194:48 pm
STL
- FCO
1 stop36h 32m
United Airlines
Fri 7/3112:25 pm
FCO
- STL
1 stop32h 37m
United Airlines
Deal found 6/6![United Airlines logo]()
$896
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 June 10, 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 June 10, 2026.
This oojo deal was found by Cheapflights users on 6/6. 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 11/2910:45 am
STL
- FCO
1 stop15h 15m
British Airways
Deal found 6/6![British Airways logo]()
$356
This American Airlines deal was found by Cheapflights users on 6/9. 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 11/82:50 pm
STL
- FCO
2 stops14h 35m
American Airlines
Deal found 6/9![American Airlines logo]()
$357
This KLM deal was found by Cheapflights users on 6/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:42 pm
STL
- FCO
1 stop12h 38m
KLM
Deal found 6/7![KLM logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/144:09 pm
STL
- FCO
3 stops46h 46m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Sat 9/2610:35 am
STL
- FCO
3 stops31h 50m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/114:57 pm
STL
- FCO
3 stops38h 38m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Thu 10/2910:35 am
STL
- FCO
3 stops45h 25m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/194:09 pm
STL
- FCO
3 stops47h 01m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/124:09 pm
STL
- FCO
3 stops50h 01m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Sat 10/310:35 am
STL
- FCO
2 stops44h 55m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/134:09 pm
STL
- FCO
3 stops45h 11m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$403
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 June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $774 (FlightHub) |
One-way from | $356 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,686 |
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 June 10, 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 - FCO
STLFCO
Lambert-St Louis
Tue 9/1
10:25 am-9:50 pm
2 stops28h 25m
Rome Fiumicino
Tue 9/8
8:10 am-7:40 pm
2 stops18h 30m
$824
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Wed 8/5
10:33 am-11:25 am
2 stops17h 52m
Rome Fiumicino
Wed 8/19
6:30 am-3:10 pm
2 stops15h 40m
$828
Quickest round-trip
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Mon 11/2
11:45 am-7:55 am
1 stop13h 10m
Rome Fiumicino
Wed 11/18
7:05 am-1:45 pm
1 stop13h 40m
$845
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Mon 9/21
12:10 pm-9:15 am
1 stop14h 05m
Rome Fiumicino
Wed 9/30
11:30 am-2:17 pm
2 stops33h 47m
$903
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Tue 8/25
10:25 am-9:50 pm
2 stops28h 25m
Rome Fiumicino
Wed 9/2
8:10 am-7:40 pm
2 stops18h 30m
$910
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Mon 7/6
7:07 am-12:05 pm
1 stop21h 58m
Rome Fiumicino
Fri 7/17
10:00 am-8:31 am
1 stop29h 31m
$916
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Wed 9/16
6:45 pm-4:25 pm
2 stops14h 40m
Rome Fiumicino
Tue 9/22
6:30 am-8:35 pm
2 stops21h 05m
$933
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Sat 10/10
3:11 pm-7:55 am
1 stop33h 44m
Rome Fiumicino
Sat 10/17
12:25 pm-2:00 pm
1 stop32h 35m
$970
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Sat 9/5
6:54 pm-7:55 am
1 stop30h 01m
Rome Fiumicino
Sat 9/12
1:20 pm-1:25 pm
1 stop31h 05m
$1,033
St. LouisRome
STL - FCO
STLFCO
Lambert-St Louis
Sun 9/6
1:04 pm-7:20 pm
3 stops23h 16m
Rome Fiumicino
Sun 9/20
9:30 am-11:36 pm
2 stops21h 06m
$1,767
Showing 1-10 of 20 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 June.
| 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 |
- 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 $544). 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?
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 June 10, 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.
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Overall
7.9
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
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St. Louis and Leonardo da Vinci/Fiumicino flights
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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 June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$472 | Average$1,271 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$500 | Average$987 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$506 | Average$826 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$543 | Average$1,028 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$555 | Average$898 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$564 | Average$1,200 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$665 | Average$1,015 | FlexibilityNo cancel fee | On-time71% |