Latest deals
When to book
FAQs
Price Alerts

Cheap flights from St. Louis to Rome from $506

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Rome departing on 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Rome

Cheap round-trip flights

Logo
4:00 pm - 7:50 pmSTL-CIA
20h 50m3 stops
Logo
6:00 am - 7:38 pmCIA-STL
20h 38m2 stops
$1,235
Find Deal
Wed, Aug 27 - Wed, Sep 3
Logo
4:00 pm - 7:50 pmSTL-CIA
20h 50m3 stops
Logo
6:00 am - 9:32 pmCIA-STL
22h 32m3 stops
$1,386
Find Deal
Wed, Aug 27 - Wed, Sep 3

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Rome Ciampino Airport 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, momondo users made 832,500 searches. Data last updated August 1, 2025.
Use the filters below to find and compare flights from St. Louis to Rome Ciampino Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Wed 8/27

4:00 pm-7:50 pm

3 stops20h 50m

Rome Ciampino

Wed 9/3

6:00 am-7:38 pm

2 stops20h 38m

$1,235

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Wed 8/27

4:00 pm-7:50 pm

3 stops20h 50m

Rome Ciampino

Wed 9/3

6:00 am-9:32 pm

3 stops22h 32m

$1,386

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Thu 11/13

10:17 am-8:00 pm

3 stops26h 43m

$506

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Fri 8/29

2:01 pm-7:20 pm

3 stops46h 19m

$572

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Tue 10/28

2:15 pm-5:40 pm

3 stops21h 25m

$635

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Fri 8/29

7:54 pm-7:20 pm

2 stops40h 26m

$652

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Thu 8/28

4:00 pm-4:55 pm

3 stops17h 55m

$878

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from St. Louis to Rome Ciampino Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Rome Ciampino Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Rome Ciampino Airport (STL to CIA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Rome Ciampino Airport

Best Price Found

$506

Fastest flight time

17h 55m

Direct flights

None
The best one-way flight to Rome Ciampino Airport from St. Louis in the past 72 hours is $506. The best round-trip flight deal from St. Louis to Rome Ciampino Airport found on momondo in the last 72 hours is $1,235.
The fastest flight from St. Louis to Rome Ciampino Airport takes 17h 55m
There are no direct flights from St. Louis to Rome Ciampino Airport. Popular non-direct route for this connection is Lambert-St Louis Airport - Rome Ciampino Airport.
Search flight deals

  • How far is Lambert-St Louis to Rome Ciampino by plane?

    Rome Ciampino is 5062.0 mi away from Lambert-St Louis. By plane, this route typically takes 20h 50m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Rome Ciampino Airport?

    Prices for flights from Lambert-St Louis Airport to Rome Ciampino Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis Airport to Rome Ciampino Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Rome Ciampino Airport.

  • What documentation or ID do you need to fly to Rome Ciampino Airport?

    The travel and health documents required for your trip to Rome Ciampino Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Rome Ciampino Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from St. Louis to Rome Ciampino Airport?

    Confirm your travel details to search for the latest offers for flights from St. Louis to Rome Ciampino Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from St. Louis to Rome Ciampino Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Rome?

Book flights to Rome if you plan to visit one of these locations
Fiumicino
Civitavecchia
Cassino
Ponza
Pienza
Ciampino
Montepulciano
Tivoli
Gaeta
Sperlonga
Santa Marinella
Cortona
Grosseto
Orvieto
Saturnia
Anzio
Sabaudia
Terracina
Ascoli Piceno
Foligno

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Rome?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Rome from St. Louis.

Can I find flights from St. Louis to Rome with flexible booking policies on momondo?

momondo does allow users to show only those flights to Rome from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Rome?

Once all potential St. Louis to Rome flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Rome right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Rome flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Rome Ciampino Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 8/6
Wed 8/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Rome

Popular cities in Italy

Popular flights according to clicks in the last 7 days on momondo
Flights to Rome Fiumicino Airportfrom $292
Flights to Milan Malpensa Airportfrom $239
Flights to Venice Marco Polo Airportfrom $346
Flights to Milan Linate Airportfrom $375
Flights to Venice Treviso A. Canova Airportfrom $492