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St. Louis

$385+ Cheap flights from Rome (ROM) 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ROM — STL
Mar 29 — Apr 51
Sun 3/29
Sun 4/5
1 adult, Economy
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Cheap flight deals from Rome to St. Louis

Cheapest flights from Rome to St. Louis
Explore the most affordable flight options available from Rome to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 27, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:50 am
FCO
-
STL
1 stop13h 35m
Lufthansa
Fri 4/176:40 pm
STL
-
FCO
2 stops16h 10m
Lufthansa
Deal found 2/25$832
This Lufthansa deal was found by Cheapflights users on 2/24. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:50 am
FCO
-
STL
1 stop13h 35m
Lufthansa
Fri 4/1711:37 am
STL
-
FCO
1 stop16h 18m
Lufthansa
Deal found 2/24$850
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:50 am
FCO
-
STL
1 stop13h 35m
United Airlines
Fri 4/172:40 pm
STL
-
FCO
1 stop14h 40m
United Airlines
Deal found 2/25$854
This United Airlines deal was found by Cheapflights users on 2/23. 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 9/247:10 am
FCO
-
STL
2 stops15h 28m
United Airlines
Mon 9/285:20 am
STL
-
FCO
1 stop24h 00m
United Airlines
Deal found 2/23$855
This Expedia deal was found by Cheapflights users on 2/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:05 am
FCO
-
STL
2 stops16h 55m
Lufthansa
Mon 3/167:00 pm
STL
-
FCO
2 stops16h 40m
Lufthansa
Deal found 2/24$860
This British Airways deal was found by Cheapflights users on 2/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:10 pm
FCO
-
STL
1 stop16h 49m
British Airways
Fri 4/1712:27 pm
STL
-
FCO
2 stops15h 58m
British Airways
Deal found 2/25$863
This Air Canada deal was found by Cheapflights users on 2/26. 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.
Thu 9/2410:00 am
FCO
-
STL
2 stops17h 00m
Air Canada
Mon 9/281:27 pm
STL
-
FCO
2 stops15h 18m
Air Canada
Deal found 2/26$866
This American Airlines deal was found by Cheapflights users on 2/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:35 am
FCO
-
STL
2 stops19h 28m
American Airlines
Mon 9/285:46 pm
STL
-
FCO
2 stops15h 14m
American Airlines
Deal found 2/24$869
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:50 am
FCO
-
STL
2 stops17h 18m
United Airlines
Fri 4/178:15 pm
STL
-
FCO
2 stops30h 00m
United Airlines
Deal found 2/25$870

Find flight deals from Rome to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Rome (ROM) 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 February 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$832
(Cheapflightsfares)

One-way from

$385
(Kiwi.com)
Provider with most accurate pricing for Rome (ROM)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rome (ROM)-Lambert-St Louis flights.
Search Deals
From Rome (ROM) to Lambert-St Louis
Search Deals
One-way flight from Rome (ROM) to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rome 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 February 27, 2026.
Use the filters below to find and compare flights from Rome to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 4/10

6:50 am-1:25 pm

1 stop13h 35m

Lambert-St Louis

Fri 4/17

11:37 am-10:55 am

1 stop16h 18m

$850

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/8

6:50 am-1:25 pm

1 stop13h 35m

Lambert-St Louis

Fri 4/17

2:40 pm-12:20 pm

1 stop14h 40m

$854

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 3/12

7:05 am-9:42 pm

2 stops20h 37m

Lambert-St Louis

Mon 3/16

7:00 pm-7:45 am

1 stop30h 45m

$855

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Tue 4/7

10:50 am-9:08 pm

2 stops17h 18m

Lambert-St Louis

Fri 4/17

8:15 pm-9:15 am

2 stops30h 00m

$870

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 3/12

9:05 am-4:32 pm

1 stop13h 27m

Lambert-St Louis

Mon 3/16

10:12 am-9:30 am

1 stop17h 18m

$872

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sat 4/11

10:30 am-10:17 pm

2 stops18h 47m

Lambert-St Louis

Sat 4/18

9:34 am-12:05 pm

1 stop19h 31m

$923

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sat 4/11

10:30 am-10:17 pm

2 stops18h 47m

Lambert-St Louis

Mon 4/13

5:21 pm-6:00 pm

2 stops17h 39m

$966

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 7/29

8:00 am-9:16 pm

2 stops20h 16m

Lambert-St Louis

Tue 10/27

11:45 am-7:55 am

1 stop14h 10m

$986

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 7/30

9:45 am-9:16 pm

1 stop18h 31m

Lambert-St Louis

Mon 10/26

11:45 am-8:30 am

2 stops14h 45m

$989

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 7/31

9:45 am-9:16 pm

1 stop18h 31m

Lambert-St Louis

Sun 11/1

11:45 am-7:45 am

1 stop13h 00m

$989

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Rome 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 Rome to St. Louis in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 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-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-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rome-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rome-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-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 Rome to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Rome 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 to St. Louis

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

Currently, April is the cheapest month in which you can book a flight from Rome to St. Louis (average of $793). Flying from Rome to St. Louis in November is currently the most expensive (average of $1,471). 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.

Related info for your journey

Find useful and relevant information for your journey from Rome 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?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Rome. On average, Lambert-St Louis has 0 inbound flights from Rome 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 to St. Louis?

    A quick flight from Rome to St. Louis can take about 13h 27m. Lufthansa provides one of the quickest options available for as low as $872. The distance between Rome and St. Louis is about 5050 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from Rome to St. Louis are American Airlines ($546), British Airways ($596), and Aer Lingus ($603).

  • Can I find deals for flights from Rome to St. Louis that include hotel bookings?

    Yes. In addition to deals on Rome to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rome to St. Louis?

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

  • Can I find deals for business class flights from Rome to St. Louis?

    Yes. Cheapflights offers flight deals from Rome to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, April is the cheapest month in which you can book a flight from Rome to St. Louis (average of $793). Flying from Rome to St. Louis in November is currently the most expensive (average of $1,471). 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
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O'Fallon
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Fairview Heights
Fenton
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Chesterfield
Alton
Farmington
Festus

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