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$292+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ROM
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Rome are usually found in February or November, booked 12 days in advance, depart on a Wednesday or Friday and return on a Wednesday

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 November 3, 2025.

This Mytrip deal was found by Cheapflights users on 11/1. 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.
Mon 12/84:05 pmSTL - FCO
2 stops14h 55mMultiple Airlines
Wed 12/247:05 amFCO - STL
1 stop13h 50mMultiple Airlines
Deal found 11/1$476
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Fri 12/510:00 amSTL - FCO
2 stops16h 25mUnited Airlines
Fri 12/121:10 pmFCO - STL
2 stops33h 30mUnited Airlines
Deal found 11/1$483
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/26:42 pmSTL - FCO
1 stop30h 03mUnited Airlines
Tue 12/91:10 pmFCO - STL
1 stop33h 19mUnited Airlines
Deal found 11/2$485
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/81:00 pmSTL - FCO
1 stop11h 45mUnited Airlines
Wed 12/247:05 amFCO - STL
1 stop13h 50mUnited Airlines
Deal found 11/1$486
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Tue 12/26:42 pmSTL - FCO
2 stops31h 43mAir Canada
Tue 12/91:10 pmFCO - STL
2 stops33h 30mAir Canada
Deal found 11/2$490
This Air Canada deal was found by Cheapflights users on 11/1. 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.
Mon 12/84:05 pmSTL - FCO
2 stops14h 55mAir Canada
Sun 12/141:10 pmFCO - STL
2 stops34h 53mAir Canada
Deal found 11/1$494
This Air Canada deal was found by Cheapflights users on 11/1. 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.
Wed 12/36:42 pmSTL - FCO
2 stops33h 13mAir Canada
Mon 12/1510:55 amFCO - STL
2 stops34h 30mAir Canada
Deal found 11/1$496
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/48:30 amSTL - FCO
1 stop17h 00mUnited Airlines
Tue 12/97:05 amFCO - STL
2 stops39h 24mUnited Airlines
Deal found 11/2$499
This Cheapflightsfares deal was found by Cheapflights users on 11/1. 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.
Fri 12/51:20 pmSTL - FCO
1 stop14h 25mIberia
Fri 12/121:10 pmFCO - STL
1 stop16h 37mIberia
Deal found 11/1$501
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/36:30 amSTL - FCO
1 stop18h 15mUnited Airlines
Fri 12/129:45 amFCO - STL
2 stops20h 00mUnited Airlines
Deal found 11/1$502
This Mytrip deal was found by Cheapflights users on 10/31. 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.
Fri 11/143:50 pmSTL - CIA
2 stops17h 25mMultiple Airlines
Mon 11/179:25 pmCIA - STL
3 stops47h 30mMultiple Airlines
Deal found 10/31$2,105

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$483
(Air Canada)

One-way from

$292
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$729
Provider with most accurate pricing for Lambert-St Louis-Rome (ROM) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Rome (ROM) flights.
Search Deals
From Lambert-St Louis to Rome (ROM)
Search Deals
One-way flight from Lambert-St Louis to Rome (ROM)
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($357 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 3, 2025.
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

Tue 12/2

3:13 pm-7:45 am

1 stop33h 32m

Rome Fiumicino

Thu 12/11

10:55 am-3:29 pm

1 stop35h 34m

$485

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 12/2

5:27 pm-7:45 am

1 stop31h 18m

Rome Fiumicino

Mon 12/15

10:55 am-3:29 pm

1 stop35h 34m

$485

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 12/2

6:42 pm-7:45 am

1 stop30h 03m

Rome Fiumicino

Tue 12/9

1:10 pm-3:29 pm

1 stop33h 19m

$485

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 2/10

7:00 am-7:55 am

1 stop17h 55m

Rome Fiumicino

Wed 2/18

9:45 am-3:29 pm

2 stops36h 44m

$499

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 2/8

8:30 am-8:30 am

1 stop17h 00m

Rome Fiumicino

Thu 2/19

1:30 pm-3:29 pm

2 stops32h 59m

$499

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 12/3

10:00 am-7:45 am

1 stop14h 45m

Rome Fiumicino

Thu 12/11

10:55 am-3:29 pm

1 stop35h 34m

$502

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 2/8

8:05 am-9:25 am

2 stops18h 20m

Rome Fiumicino

Tue 2/17

1:10 pm-3:29 pm

1 stop33h 19m

$502

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 12/4

8:30 am-8:30 am

1 stop17h 00m

Rome Fiumicino

Mon 12/15

10:55 am-3:29 pm

1 stop35h 34m

$502

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 12/4

8:30 am-8:30 am

1 stop17h 00m

Rome Fiumicino

Tue 12/9

1:10 pm-3:29 pm

1 stop33h 19m

$502

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 12/8

6:42 pm-7:45 am

1 stop30h 03m

Rome Fiumicino

Mon 12/15

9:45 am-12:15 pm

2 stops33h 30m

$502

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 21 results
1
2
3

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 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 October 31, 2025.

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, December is the cheapest month in which you can book a flight from St. Louis to Rome (average of $555). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,010). 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.

What is the cheapest time of day to fly from STL to ROM?

Find hourly flight availability from St. Louis to Rome. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

When flying from St. Louis to Rome, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight at noon.

How much does it cost to fly round-trip from St. Louis to Rome?

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 November 3, 2025.
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
8,001 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
Delta
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
United Airlines
7.4
Good
8,997 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
American Airlines
7.2
Good
11,038 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
Air Canada
7.1
Good
10,398 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.
Iberia
7.0
Good
3,006 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Lane,Nov 2025

MEM - ATL

The crew was very friendly, but they only came around and offered the better Delta Comfort snacks one time. I thought they would come around more frequently on a 5 hour flight. They did do two beverage services though, which was nice.

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 can get you from St. Louis to Rome in just under 33h 32m. Your travel time can differ by up to . The distance from St. Louis to Rome is about 5050 mi.

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

    According to our current data, Iberia ($536), United Airlines ($549), and KLM ($566) offers the cheapest pricing from St. Louis to Rome. You may be able to fly from St. Louis to Rome for 48% 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, December is the cheapest month in which you can book a flight from St. Louis to Rome (average of $555). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,010). 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$536Average$1,129FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$549Average$1,159FlexibilityNo cancel feeOn-time69%
KLMCheapest$566Average$995FlexibilityNo cancel feeOn-time75%
DeltaCheapest$587Average$873FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$665Average$939FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$671Average$1,094FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$705Average$1,157FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$711Average$1,213FlexibilityNo cancel feeOn-time70%

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