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St. Louis

$516+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
ROM — STL
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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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 junio 12, 2025.

Round-trip from

$886
(Delta)

One-way from

$516
(Kiwi.com)

Popular in

August

Cheapest in

December

Average price

$930
From Rome (ROM) to Lambert-St Louis
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One-way flight from Rome (ROM) to Lambert-St Louis
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Highest demand for flights based on searches. 8% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 junio 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. 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.
sáb. 7/269:00 amFCO - STL
2 stops21h 20mDelta
sáb. 8/25:45 pmSTL - FCO
2 stops16h 45mDelta
Deal found 6/11$886
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 7/3011:05 amFCO - STL
1 stop19h 46mAmerican Airlines
sáb. 12/137:13 amSTL - FCO
1 stop20h 32mAmerican Airlines
Deal found 6/11$893
This Billigflug 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/2510:00 amFCO - STL
1 stop16h 35mMultiple Airlines
dom. 6/296:00 amSTL - FCO
1 stop20h 00mMultiple Airlines
Deal found 6/10$897
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1810:00 amFCO - STL
1 stop20h 19mBritish Airways
dom. 6/227:20 amSTL - FCO
1 stop18h 40mBritish Airways
Deal found 6/10$912
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/188:25 pmFCO - STL
2 stops31h 05mIberia
dom. 6/228:35 amSTL - FCO
1 stop17h 25mIberia
Deal found 6/10$939
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/2510:00 amFCO - STL
2 stops16h 58mAir Canada
dom. 6/291:30 pmSTL - FCO
1 stop12h 45mAir Canada
Deal found 6/10$1,006
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.
vie. 7/2511:30 amFCO - STL
1 stop16h 20mUnited Airlines
vie. 8/11:20 pmSTL - FCO
1 stop11h 35mUnited Airlines
Deal found 6/10$1,010

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 junio 12, 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

sáb. 7/26

9:00 am-8:25 pm

1 stop18h 25m

Lambert-St Louis

sáb. 8/2

10:30 am-11:30 am

2 stops18h 00m

$886

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

mié. 7/30

11:05 am-11:51 pm

1 stop19h 46m

Lambert-St Louis

sáb. 12/13

7:13 am-10:45 am

1 stop20h 32m

$893

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

mié. 6/25

10:00 am-7:35 pm

1 stop16h 35m

Lambert-St Louis

dom. 6/29

6:00 am-9:00 am

1 stop20h 00m

$897

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

mié. 6/25

10:00 am-7:58 pm

2 stops16h 58m

Lambert-St Louis

dom. 6/29

1:30 pm-9:15 am

1 stop12h 45m

$1,006

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

vie. 7/25

11:30 am-8:50 pm

1 stop16h 20m

Lambert-St Louis

vie. 8/1

1:20 pm-7:55 am

1 stop11h 35m

$1,010

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

mié. 6/25

6:55 am-6:20 pm

2 stops18h 25m

Lambert-St Louis

dom. 6/29

1:24 pm-11:30 am

2 stops15h 06m

$1,291

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

mar. 10/7

7:15 am-9:07 am

3 stops32h 52m

$516

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

dom. 9/7

7:30 am-8:23 pm

2 stops19h 53m

$597

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

vie. 7/11

10:45 am-10:45 pm

2 stops43h 00m

$707

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

dom. 9/7

10:20 am-9:06 pm

1 stop17h 46m

$792

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 15 results
1
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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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 junio 12, 2025.
Get a feel of what it's like to fly with Delta, Finnair and United Airlines from Rome to St. Louis by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $886. Other airlines that can offer you cheap pricing are American Airlines, from $893, and Air Canada, from $1,006. Users have found that Delta is 7% 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 ($597), Turkish Airlines ($707), and Iberia ($792).

  • 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 Rome?

Book flights to Rome if you plan to visit one of these locations
O'Fallon
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Fairview Heights
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Glencoe
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Farmington

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