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$310+ Cheap flights from St. Louis (STL) to Rome (ROM)

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ROM
feb. 7 — feb. 141
sáb. 2/7
sáb. 2/14
1 adult, Economy
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Cheap flight deals from St. Louis to Rome

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Rome (ROM). 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 enero 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$438
(United Airlines)

One-way from

$310
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$693
Provider with most accurate pricing for Lambert-St Louis-Rome (ROM) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Rome (ROM) flights.
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From Lambert-St Louis to Rome (ROM)
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One-way flight from Lambert-St Louis to Rome (ROM)
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Highest demand for flights based on searches. 27% potential increase in price ($360 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from St. Louis to Rome

Cheapest flights from St. Louis to Rome
Explore the most affordable flight options available from St. Louis to Rome. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 8, 2026.

This United Airlines deal was found by Cheapflights users on 1/8. 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.
mié. 2/257:41 amSTL - FCO
1 stop17h 04mUnited Airlines
mié. 3/41:15 pmFCO - STL
2 stops38h 52mUnited Airlines
Deal found 1/8$438
This United Airlines deal was found by Cheapflights users on 1/7. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/2712:44 pmSTL - FCO
1 stop12h 46mUnited Airlines
mar. 2/31:10 pmFCO - STL
2 stops32h 20mUnited Airlines
Deal found 1/7$443
This oojo deal was found by Cheapflights users on 1/7. 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.
lun. 2/21:35 pmSTL - FCO
2 stops23h 00mBritish Airways
vie. 2/131:10 pmFCO - STL
1 stop16h 42mBritish Airways
Deal found 1/7$445
This oojo deal was found by Cheapflights users on 1/6. 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.
dom. 2/89:33 amSTL - FCO
2 stops19h 52mBritish Airways
mié. 2/181:10 pmFCO - STL
1 stop16h 54mBritish Airways
Deal found 1/6$446
This British Airways deal was found by Cheapflights users on 1/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/151:29 pmSTL - FCO
2 stops20h 26mBritish Airways
mar. 4/2110:00 amFCO - STL
1 stop20h 48mBritish Airways
Deal found 1/7$455
This KLM deal was found by Cheapflights users on 1/7. 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.
mié. 1/219:59 amSTL - FCO
1 stop17h 31mKLM
mié. 1/2812:40 pmFCO - STL
1 stop14h 57mKLM
Deal found 1/7$458
This Air Canada deal was found by Cheapflights users on 1/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/138:05 amSTL - FCO
2 stops18h 20mAir Canada
jue. 1/2212:50 pmFCO - STL
1 stop33h 39mAir Canada
Deal found 1/6$459
This FlightHub deal was found by Cheapflights users on 1/7. 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.
mar. 4/144:05 pmSTL - FCO
2 stops34h 10mAir Canada
jue. 4/2312:25 pmFCO - STL
1 stop33h 59mAir Canada
Deal found 1/7$463
This British Airways deal was found by Cheapflights users on 1/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/151:29 pmSTL - FCO
2 stops20h 26mBritish Airways
lun. 4/208:20 pmFCO - STL
1 stop30h 10mBritish Airways
Deal found 1/7$465
This Finnair deal was found by Cheapflights users on 1/8. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/1711:46 amSTL - FCO
2 stops24h 09mFinnair
mar. 3/246:40 pmFCO - STL
2 stops30h 49mFinnair
Deal found 1/8$466

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Rome 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 enero 8, 2026.
Use the filters below to find and compare flights from St. Louis to Rome that are best for you.

Fly from

St. Louis

Fly to

Rome

Route

Depart

Return

Price

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 1/27

12:44 pm-8:30 am

1 stop12h 46m

Rome Fiumicino

mar. 2/3

1:10 pm-2:30 pm

2 stops32h 20m

$443

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 1/21

7:10 am-10:30 am

1 stop20h 20m

Rome Fiumicino

mié. 1/28

12:40 pm-11:37 pm

1 stop17h 57m

$458

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 4/14

5:53 pm-9:50 am

1 stop32h 57m

Rome Fiumicino

jue. 4/23

1:10 pm-11:04 pm

1 stop16h 54m

$458

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 2/3

9:59 am-9:45 am

2 stops16h 46m

Rome Fiumicino

mar. 2/10

12:40 pm-8:37 pm

1 stop14h 57m

$462

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

sáb. 2/21

8:30 am-8:30 am

1 stop17h 00m

Rome Fiumicino

sáb. 2/28

9:45 am-9:05 pm

1 stop18h 20m

$508

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 2/8

8:30 am-8:30 am

1 stop17h 00m

Rome Fiumicino

mié. 2/18

11:00 am-8:23 pm

1 stop16h 23m

$508

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 3/22

6:33 pm-9:55 pm

2 stops21h 22m

Rome Fiumicino

lun. 3/30

2:15 pm-5:01 pm

1 stop33h 46m

$511

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 1/21

6:44 pm-7:20 pm

2 stops17h 36m

Rome Fiumicino

dom. 1/25

5:50 pm-9:15 pm

2 stops34h 25m

$525

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

dom. 4/19

3:30 pm-9:10 pm

3 stops22h 40m

$348

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

vie. 3/6

8:12 pm-10:15 am

3 stops55h 03m

$350

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 27 results
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Compare providers for flights from St. Louis to Rome

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 Rome in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 St. Louis-Rome flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Rome flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Rome flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Rome flights, Cheapflights users trust eDreams the most. eDreams 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 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 Rome

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

How far ahead should I book a flight from St. Louis to Rome?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Rome. Price data was last updated on January 2, 2026.

The best time to book flights from St. Louis to Rome is 10 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Rome (average of $465). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,008). 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.

Reviews of airlines servicing Rome

Get insights into the airlines that provide service to Rome. 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 Rome. Reviews last updated enero 8, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from St. Louis to Rome. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,029 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,029 reviews
Delta
7.9
Good
8,029 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,139 reviews
Delta
7.9
Good
8,029 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,095 reviews
Delta
7.9
Good
8,029 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,603 reviews
Delta
7.9
Good
8,029 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Iberia
7.0
Good
3,076 reviews
Delta
7.9
Good
8,029 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Rome. 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 from for flights from St. Louis to Rome?

    If you book a flight to Rome from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Lambert-St Louis to Rome per day from 8 different airlines.

  • How long is the flight from St. Louis to Rome?

    United Airlines, KLM, and British Airways can get you from St. Louis to Rome in just under 12h 46m. Your travel time can differ by up to 20h 11m. The distance from St. Louis to Rome is about 5050 mi. This flight may include one or multiple stops.

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

    According to our current data, British Airways ($472), Lufthansa ($506), and Iberia ($536) offers the cheapest pricing from St. Louis to Rome. You may be able to fly from St. Louis to Rome for 50% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Rome 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 St. Louis to Rome?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Rome (average of $465). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,008). 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
Fiumicino
Montepulciano
Santa Marinella

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Top 8 airlines flying from St. Louis to Rome

Discover the top 8 airlines that operate flights from St. Louis to Rome. 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 enero 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$472Average$787FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$506Average$987FlexibilityNo cancel feeOn-time76%
IberiaCheapest$536Average$1,129FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$549Average$1,069FlexibilityNo cancel feeOn-time69%
KLMCheapest$555Average$983FlexibilityNo cancel feeOn-time75%
DeltaCheapest$587Average$873FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$665Average$938FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$705Average$1,170FlexibilityNo cancel feeOn-time67%

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