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$325+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ROM
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 21 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 junio 12, 2025.

Round-trip from

$842
(Air Canada)

One-way from

$325
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,609
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. 21% potential increase in price ($311 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($46 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 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 junio 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/12. 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.
vie. 9/269:15 amSTL - FCO
1 stop19h 30mAir Canada
lun. 10/612:25 pmFCO - STL
1 stop14h 13mAir Canada
Deal found 6/12$883
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/2010:08 amSTL - FCO
1 stop14h 57mIberia
vie. 8/111:05 amFCO - STL
1 stop16h 14mIberia
Deal found 6/11$905
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/183:59 pmSTL - FCO
1 stop13h 46mKLM
sáb. 7/269:00 amFCO - STL
1 stop18h 25mKLM
Deal found 6/10$920
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. 7/181:04 pmSTL - FCO
1 stop17h 01mUnited Airlines
sáb. 7/2610:20 amFCO - STL
2 stops16h 11mUnited Airlines
Deal found 6/10$925
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/216:40 amSTL - FCO
2 stops18h 15mDelta
jue. 7/316:05 amFCO - STL
2 stops17h 37mDelta
Deal found 6/10$930
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/911:24 amSTL - FCO
3 stops29h 21mMultiple Airlines
mié. 7/1610:45 amFCO - STL
3 stops30h 07mMultiple Airlines
Deal found 6/11$933
This Gurufare deal was found by Cheapflights users on 6/12. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/2511:30 amSTL - FCO
1 stop16h 25mLufthansa
jue. 7/36:40 pmFCO - STL
1 stop25h 50mLufthansa
Deal found 6/12$1,025
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/79:15 amSTL - CIA
3 stops29h 10mMultiple Airlines
lun. 7/149:25 pmCIA - STL
3 stops33h 10mMultiple Airlines
Deal found 6/9$1,105
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/268:05 pmSTL - FCO
2 stops14h 40mBritish Airways
mié. 7/96:55 amFCO - STL
2 stops20h 29mBritish Airways
Deal found 6/9$1,145

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 junio 12, 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

vie. 9/26

9:15 am-11:45 am

1 stop19h 30m

Rome Fiumicino

lun. 10/6

12:25 pm-7:38 pm

1 stop14h 13m

$883

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 7/20

10:08 am-8:05 am

1 stop14h 57m

Rome Fiumicino

vie. 8/1

11:05 am-8:19 pm

1 stop16h 14m

$905

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

vie. 7/18

3:59 pm-12:45 pm

1 stop13h 46m

Rome Fiumicino

sáb. 7/26

9:00 am-8:25 pm

1 stop18h 25m

$920

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

vie. 7/18

2:15 pm-12:45 pm

2 stops15h 30m

Rome Fiumicino

sáb. 7/26

10:10 am-11:20 pm

2 stops20h 10m

$925

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 7/9

11:24 am-11:45 pm

3 stops29h 21m

Rome Fiumicino

mié. 7/16

10:45 am-9:52 am

3 stops30h 07m

$933

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

vie. 7/4

8:00 am-7:35 am

2 stops16h 35m

Rome Fiumicino

jue. 7/10

12:25 pm-10:40 am

2 stops29h 15m

$937

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 6/25

11:30 am-10:55 am

1 stop16h 25m

Rome Fiumicino

jue. 7/3

6:40 pm-1:30 pm

1 stop25h 50m

$1,025

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

lun. 7/7

9:15 am-9:25 pm

3 stops29h 10m

Rome Ciampino

lun. 7/14

9:25 pm-11:35 pm

3 stops33h 10m

$1,105

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

jue. 6/26

8:05 pm-5:45 pm

2 stops14h 40m

Rome Fiumicino

mié. 7/9

6:55 am-8:24 pm

2 stops20h 29m

$1,145

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

lun. 6/23

7:20 am-10:25 am

2 stops20h 05m

Rome Fiumicino

mié. 7/2

7:30 am-8:05 am

2 stops31h 35m

$1,684

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 21 results
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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 June 9, 2025.

The best time to book flights from St. Louis to Rome is 21 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 $644). Flying from St. Louis to Rome in June is currently the most expensive (average of $1,142). 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 junio 12, 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 junio 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Rome, such as Delta, KLM and United Airlines. 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
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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!
Scandinavian Airlines
7.3
Good
1,387 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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 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, Air Canada ($842), United Airlines ($844), and Delta ($865) offers the cheapest pricing from St. Louis to Rome. You may be able to fly from St. Louis to Rome for 24% 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 Air Canada, with whom users have recently found tickets for as low as $424. However, be on the lookout for offers from United Airlines and Scandinavian 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 $1,142). 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

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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$630Average$1,026FlexibilityNo cancel feeOn-time77%
DeltaCheapest$670Average$939FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$675Average$1,117FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$704Average$1,214FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$708Average$1,248FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$713Average$1,074FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$784Average$1,156FlexibilityNo cancel feeOn-time67%
KLMCheapest$800Average$1,125FlexibilityNo cancel feeOn-time75%

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