HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Rome

$317+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ROM
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Rome 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 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 March 10, 2026.

This FlightHub deal was found by Cheapflights users on 3/5. 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.
Mon 8/313:42 pm
STL
-
FCO
2 stops36h 23m
Scandinavian Airlines
Wed 9/911:55 am
FCO
-
STL
2 stops42h 42m
Scandinavian Airlines
Deal found 3/5$654
This FlightHub deal was found by Cheapflights users on 3/9. 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.
Mon 8/241:30 pm
STL
-
FCO
2 stops38h 35m
Scandinavian Airlines
Sat 12/1211:55 am
FCO
-
STL
2 stops42h 44m
Scandinavian Airlines
Deal found 3/9$744
This Gotogate deal was found by Cheapflights users on 3/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:30 pm
STL
-
FCO
1 stop19h 20m
Multiple Airlines
Thu 8/2011:30 am
FCO
-
STL
1 stop14h 12m
Multiple Airlines
Deal found 3/8$745
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sun 8/96:55 pm
STL
-
FCO
1 stop30h 00m
United Airlines
Thu 8/2012:25 pm
FCO
-
STL
1 stop32h 37m
United Airlines
Deal found 3/8$751
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:10 pm
STL
-
FCO
1 stop14h 05m
Air Canada
Wed 8/196:50 am
FCO
-
STL
2 stops18h 37m
Air Canada
Deal found 3/5$757
This American Airlines deal was found by Cheapflights users on 3/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:50 pm
STL
-
FCO
2 stops14h 35m
American Airlines
Thu 11/261:00 pm
FCO
-
STL
1 stop14h 55m
American Airlines
Deal found 3/7$762
This Gotogate deal was found by Cheapflights users on 3/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:00 am
STL
-
FCO
2 stops20h 15m
Air Canada
Thu 8/209:35 am
FCO
-
STL
2 stops17h 27m
Air Canada
Deal found 3/8$763
This Iberia deal was found by Cheapflights users on 3/9. 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.
Wed 8/510:08 am
STL
-
FCO
1 stop18h 57m
Iberia
Wed 8/191:10 pm
FCO
-
STL
1 stop16h 53m
Iberia
Deal found 3/9$765
This FlightHub deal was found by Cheapflights users on 3/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:42 pm
STL
-
FCO
2 stops36h 23m
Scandinavian Airlines
Thu 12/1011:55 am
FCO
-
STL
2 stops42h 44m
Scandinavian Airlines
Deal found 3/10$768
This Mytrip deal was found by Cheapflights users on 3/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/282:40 pm
STL
-
CIA
2 stops22h 40m
Multiple Airlines
Tue 8/189:05 pm
CIA
-
STL
2 stops23h 20m
Multiple Airlines
Deal found 3/7$1,468
This Mytrip deal was found by Cheapflights users on 3/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/54:05 pm
STL
-
CIA
3 stops22h 00m
Multiple Airlines
Sun 4/1210:55 am
CIA
-
STL
2 stops35h 30m
Multiple Airlines
Deal found 3/8$1,483
This Mytrip deal was found by Cheapflights users on 3/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:30 pm
STL
-
CIA
2 stops22h 40m
Multiple Airlines
Fri 4/245:50 pm
CIA
-
STL
3 stops28h 35m
Multiple Airlines
Deal found 3/8$1,605

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$654
(FlightHub)

One-way from

$317
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$894
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. 30% potential increase in price ($399 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 10, 2026.
Use the filters below to find and compare flights from St. Louis to Rome that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

6:30 am-8:15 am

2 stops18h 45m

Rome Fiumicino

Tue 4/21

11:30 am-9:13 pm

2 stops40h 43m

$811

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

7:25 am-10:50 am

1 stop20h 25m

Rome Fiumicino

Wed 4/22

1:10 pm-9:19 pm

1 stop15h 09m

$826

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sat 5/9

4:15 pm-12:20 pm

1 stop37h 05m

Rome Fiumicino

Tue 5/19

2:20 pm-12:06 pm

1 stop28h 46m

$923

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/7

9:10 am-7:55 am

1 stop15h 45m

Rome Fiumicino

Tue 4/21

11:30 am-9:13 pm

2 stops40h 43m

$933

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 9/2

10:25 am-9:50 am

2 stops16h 25m

Rome Fiumicino

Mon 9/14

8:10 am-7:45 pm

2 stops18h 35m

$988

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sat 5/9

10:15 am-9:35 am

2 stops16h 20m

Rome Fiumicino

Tue 5/19

6:30 am-4:46 pm

2 stops17h 16m

$1,005
Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 4/20

7:45 am-7:55 am

1 stop17h 10m

Rome Fiumicino

Mon 4/27

6:50 am-3:25 pm

2 stops15h 35m

$1,022

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 5/7

1:00 pm-9:15 am

1 stop13h 15m

Rome Fiumicino

Sat 5/16

6:50 am-8:25 pm

2 stops20h 35m

$1,048

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/25

3:30 pm-2:05 pm

1 stop15h 35m

Rome Fiumicino

Sat 12/12

6:45 pm-1:55 pm

1 stop26h 10m

$1,051

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sat 5/16

7:05 am-10:20 am

1 stop20h 15m

Rome Fiumicino

Tue 5/26

11:30 am-12:11 pm

2 stops31h 41m

$1,069

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 37 resultsSorted by cheapest first
1
2
3
4

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 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 St. Louis-Rome flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Rome flight deals on Cheapflights vs. FlightHub >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 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 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 March 6, 2026.

The best time to book flights from St. Louis to Rome is 29 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 $455). Flying from St. Louis to Rome in June is currently the most expensive (average of $999). 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.

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 March 10, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican 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
8,276 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

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
8,276 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

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
9,409 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

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
7.1
Good
11,414 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

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
10,800 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

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.
British Airways
6.7
Okay
7,781 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

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 7 different airlines.

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

    United Airlines and Delta can get you from St. Louis to Rome in just under 18h 45m. Your travel time can differ by up to 1h 40m. 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 KLM ($506) 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, January is the cheapest month in which you can book a flight from St. Louis to Rome (average of $455). Flying from St. Louis to Rome in June is currently the most expensive (average of $999). 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

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 St. Louis to Rome

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

Top 7 airlines flying from St. Louis to Rome

Discover the top 7 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$472Average$1,185FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$506Average$993FlexibilityNo cancel feeOn-time76%
KLMCheapest$506Average$950FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$543Average$976FlexibilityNo cancel feeOn-time69%
DeltaCheapest$555Average$871FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$665Average$937FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$705Average$1,170FlexibilityNo cancel feeOn-time67%

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.