HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$384+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
ROM — STL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Rome to St. Louis 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 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 July 30, 2025.

Round-trip from

$786
(American Airlines)

One-way from

$384
(Kiwi.com)

Popular in

August

Cheapest in

December
From Rome (ROM) to Lambert-St Louis
Search Deals
One-way flight from Rome (ROM) to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals

Find 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 July 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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 11/2711:10 amFCO - STL
2 stops29h 44mAmerican Airlines
Mon 12/12:50 pmSTL - FCO
2 stops15h 00mAmerican Airlines
Deal found 7/29$786
This Expedia deal was found by Cheapflights users on 7/29. 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.
Fri 9/1210:20 amFCO - STL
1 stop17h 46mBritish Airways
Fri 9/193:59 pmSTL - FCO
2 stops23h 36mBritish Airways
Deal found 7/29$805
This United Airlines deal was found by Cheapflights users on 7/28. 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 11/271:30 pmFCO - STL
1 stop31h 25mUnited Airlines
Mon 12/110:00 amSTL - FCO
1 stop14h 45mUnited Airlines
Deal found 7/28$811
This Delta deal was found by Cheapflights users on 7/30. 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.
Mon 8/186:05 amFCO - STL
2 stops17h 30mDelta
Mon 11/175:45 pmSTL - FCO
2 stops16h 40mDelta
Deal found 7/30$883
This Expedia deal was found by Cheapflights users on 7/29. 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 8/1311:35 amFCO - STL
1 stop17h 27mMultiple Airlines
Sun 8/176:49 pmSTL - FCO
2 stops15h 41mMultiple Airlines
Deal found 7/29$1,064
This Expedia deal was found by Cheapflights users on 7/29. 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 8/1310:20 amFCO - STL
1 stop15h 40mLufthansa
Sun 8/175:30 pmSTL - FCO
1 stop31h 25mLufthansa
Deal found 7/29$1,088
This Iberia deal was found by Cheapflights users on 7/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:05 amFCO - STL
1 stop19h 19mIberia
Fri 8/297:59 pmSTL - FCO
1 stop30h 11mIberia
Deal found 7/30$1,268

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 July 30, 2025.
Use the filters below to find and compare flights from Rome to St. Louis that are best for you.

Fly from

Rome

Fly to

St. Louis

Route

Depart

Return

Price

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 11/27

11:10 am-9:54 am

2 stops29h 44m

Lambert-St Louis

Mon 12/1

2:50 pm-12:50 pm

2 stops15h 00m

$786

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 9/12

10:20 am-9:06 pm

1 stop17h 46m

Lambert-St Louis

Fri 9/19

3:59 pm-10:35 pm

2 stops23h 36m

$805

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 11/27

1:30 pm-1:55 pm

1 stop31h 25m

Lambert-St Louis

Mon 12/1

10:00 am-7:45 am

1 stop14h 45m

$811

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Mon 8/18

6:05 am-4:35 pm

2 stops17h 30m

Lambert-St Louis

Mon 11/17

5:45 pm-5:25 pm

2 stops16h 40m

$883

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/13

11:35 am-10:02 pm

1 stop17h 27m

Lambert-St Louis

Sun 8/17

6:49 pm-5:30 pm

2 stops15h 41m

$1,064

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 8/13

10:20 am-7:00 pm

1 stop15h 40m

Lambert-St Louis

Sun 8/17

5:30 pm-7:55 am

1 stop31h 25m

$1,088

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Sat 8/9

11:05 am-11:24 pm

1 stop19h 19m

Lambert-St Louis

Fri 8/29

7:59 pm-9:10 am

1 stop30h 11m

$1,268

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 9/5

7:05 pm-4:03 pm

2 stops27h 58m

$384

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Thu 11/6

11:35 am-11:56 pm

2 stops19h 21m

$604

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Mon 9/29

3:30 pm-2:27 pm

2 stops29h 57m

$700

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 14 results
1
2

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
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 30, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Turkish Airlines from Rome to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Turkish Airlines
7.3
Good
3,928 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Aer Lingus
7.1
Good
1,191 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    Cheapflights users have booked flights from Rome to St. Louis round-trip from $786. Other airlines that can offer you cheap pricing are British Airways, from $805, and United Airlines, from $811. Users have found that American Airlines is 17% cheaper than the other options available to this destination.

  • 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 Aer Lingus ($604), Turkish Airlines ($700), and Lufthansa ($723).

  • 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, August is the cheapest month in which you can book a flight from Rome to St. Louis (average of $311). Flying from Rome to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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 for Rome to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Leonardo da Vinci/Fiumicino to St. Louis flights
Leonardo da Vinci/Fiumicino to Kansas City flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.