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$357+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ROM
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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The best prices from Lambert-St Louis to Rome are usually found in February or November, booked 39 days in advance, depart on a Wednesday or Friday and return on a Wednesday

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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$617
(United)

One-way from

$357
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,066
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. 22% potential increase in price ($332 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 March 3, 2025.

This United deal was found by Cheapflights users on 3/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/308:25 amSTL - FCO
1 stop16h 50mUnited Airlines
Tue 4/811:30 amFCO - STL
3 stops35h 17mUnited Airlines
Deal found 3/2$617
This Gotogate deal was found by Cheapflights users on 3/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/243:50 pmSTL - FCO
2 stops16h 10mAir Canada
Wed 4/912:25 pmFCO - STL
1 stop33h 24mAir Canada
Deal found 3/2$623
This KLM deal was found by Cheapflights users on 3/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2410:19 amSTL - FCO
1 stop17h 06mKLM
Wed 4/911:35 amFCO - STL
1 stop18h 55mKLM
Deal found 3/2$627
This Cheapflightsfares deal was found by Cheapflights users on 3/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/111:55 amSTL - FCO
1 stop14h 15mIberia
Tue 4/810:00 amFCO - STL
1 stop19h 28mIberia
Deal found 3/2$628
This Air Canada deal was found by Cheapflights users on 3/3. 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.
Tue 11/44:15 pmSTL - FCO
2 stops34h 45mMultiple Airlines
Tue 11/189:40 amFCO - STL
2 stops36h 46mMultiple Airlines
Deal found 3/3$639
This Delta deal was found by Cheapflights users on 3/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/266:00 amSTL - FCO
2 stops18h 05mDelta
Wed 4/211:35 amFCO - STL
1 stop18h 56mDelta
Deal found 3/2$645
This Finnair deal was found by Cheapflights users on 3/3. 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.
Mon 11/31:55 pmSTL - FCO
2 stops21h 00mFinnair
Mon 11/176:40 pmFCO - STL
2 stops30h 37mFinnair
Deal found 3/3$656
This Expedia deal was found by Cheapflights users on 3/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:06 amSTL - FCO
1 stop20h 04mBritish Airways
Fri 10/318:00 pmFCO - STL
2 stops28h 03mBritish Airways
Deal found 3/2$765
This KAYAK deal was found by Cheapflights users on 3/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/273:30 pmSTL - FCO
2 stops20h 15mScandinavian Airlines
Wed 9/37:35 pmFCO - STL
2 stops35h 04mScandinavian Airlines
Deal found 3/1$790
This Lufthansa deal was found by Cheapflights users on 3/2. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/53:45 pmSTL - FCO
1 stop14h 00mLufthansa
Mon 3/106:45 pmFCO - STL
2 stops34h 47mLufthansa
Deal found 3/2$864
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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.
Tue 9/99:50 amSTL - FCO
2 stops17h 35mAer Lingus
Tue 9/2311:10 amFCO - STL
2 stops19h 15mAer Lingus
Deal found 3/3$980
This oojo deal was found by Cheapflights users on 3/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:30 amSTL - FCO
2 stops24h 20mTurkish Airlines
Sat 3/82:50 pmFCO - STL
2 stops30h 41mTurkish Airlines
Deal found 3/2$1,039

Find flights from St. Louis to Rome within your budget

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 3, 2025.

Fly from

St. Louis

Fly to

Rome

Route

Depart

Return

Price

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 3/30

8:25 am-8:15 am

1 stop16h 50m

Rome Fiumicino

Tue 4/8

11:30 am-3:47 pm

3 stops35h 17m

$617

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 3/24

3:50 pm-2:00 pm

2 stops16h 10m

Rome Fiumicino

Wed 4/9

12:25 pm-2:49 pm

1 stop33h 24m

$623

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/1

4:44 pm-7:35 am

1 stop31h 51m

Rome Fiumicino

Tue 4/8

11:30 am-2:49 pm

2 stops34h 19m

$625

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 3/24

10:19 am-9:25 am

1 stop17h 06m

Rome Fiumicino

Wed 4/9

11:35 am-11:30 pm

1 stop18h 55m

$627

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 4/1

11:55 am-9:10 am

1 stop14h 15m

Rome Fiumicino

Tue 4/8

10:00 am-10:28 pm

1 stop19h 28m

$628

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 3/26

6:00 am-6:05 am

2 stops18h 05m

Rome Fiumicino

Wed 4/2

11:35 am-11:31 pm

1 stop18h 56m

$645

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sat 4/5

5:27 pm-8:05 am

1 stop31h 38m

Rome Fiumicino

Sun 4/13

9:00 pm-8:58 pm

2 stops30h 58m

$816

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 4/10

10:17 am-9:10 am

1 stop15h 53m

Rome Fiumicino

Tue 4/22

12:10 pm-7:23 pm

1 stop14h 13m

$870

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 3/6

6:30 am-1:50 pm

2 stops24h 20m

Rome Fiumicino

Sat 3/8

2:50 pm-2:31 pm

2 stops30h 41m

$1,039

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 3/13

11:24 am-11:45 am

2 stops18h 21m

Rome Fiumicino

Sat 3/22

12:50 pm-4:48 pm

2 stops33h 58m

$1,455

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 22 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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.

Travel insights for flights from St. Louis to Rome

Get recent, data-driven insights about flights from St. Louis to Rome including ideal travel times, pricing trends, and more.

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 $644). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,231). 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 March 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 afternoon, which can drop the price by up to 9% versus a flight in the evening.

Rainfall in Rome by month

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

In terms of precipitation, rainfall in Rome ranges from 0.6 - 4.4 inches per month. November is typically the wettest month, when rainfall can reach 4.4 in. June is typically the driest time to visit Rome when rainfall is around 0.6 in.

Temperature in Rome by month

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

If weather is an important factor for your trip to Rome, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

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 3, 2025.
Read through reviews of airlines operating flights from St. Louis to Rome, such as Delta, KLM and Finnair. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,070 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,070 reviews
Delta
8.0
Very good
8,070 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,322 reviews
Delta
8.0
Very good
8,070 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very good
8,070 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,435 reviews
Delta
8.0
Very good
8,070 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,679 reviews
Delta
8.0
Very good
8,070 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    According to our current data, United Airlines ($617), Air Canada ($623), and KLM ($627) offers the cheapest pricing from St. Louis to Rome. You may be able to fly from St. Louis to Rome for 46% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from St. Louis to Rome one-way?

    The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as $478. However, be on the lookout for offers from Aer Lingus and American Airlines, as they are both options that can get you from St. Louis to Rome for a low price.

  • 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 $644). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,231). 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
Fiumicino
Gaeta
Ciampino
Montepulciano
Ponza

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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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$630Average$1,086FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$668Average$958FlexibilityNo cancel feeOn-time76%
DeltaCheapest$670Average$1,018FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$688Average$1,208FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$721Average$1,154FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$727Average$1,117FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$738Average$1,158FlexibilityNo cancel feeOn-time67%
KLMCheapest$800Average$1,171FlexibilityNo cancel feeOn-time75%
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