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$254+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ROM
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
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 julio 3, 2025.

Round-trip from

$539
(United Airlines)

One-way from

$254
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$1,188
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. 20% potential increase in price ($290 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/911:45 amSTL - FCO
1 stop13h 00mUnited Airlines
vie. 11/211:15 pmFCO - STL
2 stops32h 05mUnited Airlines
Deal found 7/3$484
This CheapOair deal was found by Cheapflights users on 7/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/229:15 amSTL - FCO
1 stop19h 30mMultiple Airlines
vie. 11/77:05 amFCO - STL
1 stop13h 50mMultiple Airlines
Deal found 7/2$502
This Booking.com deal was found by Cheapflights users on 7/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/229:15 amSTL - FCO
2 stops17h 00mAir Canada
vie. 11/71:35 pmFCO - STL
2 stops32h 54mAir Canada
Deal found 7/2$509
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/97:20 amSTL - FCO
2 stops16h 45mDelta
vie. 11/219:20 amFCO - STL
2 stops21h 19mDelta
Deal found 7/3$511
This Iberia deal was found by Cheapflights users on 7/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/165:52 pmSTL - FCO
1 stop31h 13mIberia
jue. 9/117:35 amFCO - STL
2 stops19h 41mIberia
Deal found 7/2$575
This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/303:50 pmSTL - FCO
1 stop18h 50mLufthansa
sáb. 12/61:30 pmFCO - STL
1 stop31h 25mLufthansa
Deal found 7/1$590
This CheapOair deal was found by Cheapflights users on 7/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/1310:36 amSTL - FCO
1 stop17h 44mBritish Airways
lun. 10/208:30 pmFCO - STL
2 stops29h 06mBritish Airways
Deal found 7/2$593
This Mytrip deal was found by Cheapflights users on 7/1. 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.
mié. 10/11:30 pmSTL - CIA
3 stops20h 35mMultiple Airlines
dom. 10/126:20 amCIA - STL
3 stops20h 18mMultiple Airlines
Deal found 7/1$1,106

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 julio 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

mar. 8/19

1:30 pm-9:15 am

1 stop12h 45m

Rome Fiumicino

jue. 9/11

11:30 am-12:25 pm

2 stops31h 55m

$539

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 8/17

1:30 pm-9:15 am

1 stop12h 45m

Rome Fiumicino

jue. 9/11

2:30 pm-2:19 pm

2 stops30h 49m

$546

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 10/1

1:30 pm-9:15 am

1 stop12h 45m

Rome Fiumicino

mié. 10/15

7:10 am-1:30 pm

1 stop13h 20m

$555

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

sáb. 8/16

5:11 pm-7:35 am

1 stop31h 24m

Rome Fiumicino

mié. 9/10

11:35 am-7:07 pm

1 stop14h 32m

$566

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

sáb. 8/16

5:52 pm-8:05 am

1 stop31h 13m

Rome Fiumicino

jue. 9/11

7:35 am-8:16 pm

2 stops19h 41m

$575

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 8/27

5:52 pm-7:15 pm

2 stops18h 23m

Rome Fiumicino

mié. 9/3

10:00 am-6:23 pm

1 stop15h 23m

$594

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

mié. 10/1

1:30 pm-5:05 pm

3 stops20h 35m

Rome Ciampino

dom. 10/12

6:20 am-7:38 pm

3 stops20h 18m

$1,106

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 8/10

10:47 am-2:30 pm

2 stops20h 43m

$254

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

mar. 10/21

7:52 pm-7:20 pm

3 stops40h 28m

$325

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 7/15

1:30 pm-11:45 am

1 stop15h 15m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 16 results
1
2

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 27, 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 $1,141). 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 julio 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.

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 julio 3, 2025.
Read reviews from past customers who have flown Delta, Austrian Airlines, and United 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
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

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!
Austrian Airlines
7.6
Good
809 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

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
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

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
1,416 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

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!
Air Canada
7.1
Good
9,681 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

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, United Airlines ($539), Air Canada ($546), and Delta ($566) 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.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $424. However, be on the lookout for offers from Air Canada and Lufthansa, 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 $1,141). 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
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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$670Average$939FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$675Average$1,117FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$687Average$1,207FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$708Average$1,248FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$713Average$1,050FlexibilityNo cancel feeOn-time71%
IberiaCheapest$739Average$1,273FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$784Average$1,153FlexibilityNo cancel feeOn-time67%
KLMCheapest$800Average$1,125FlexibilityNo cancel feeOn-time75%

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