Latest deals
When to book
FAQs
Price Alerts

Cheap flights from St. Louis to Rome from $438

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 8/19. 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
1 adult, Economy, 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:05 am - 9:35 pm
STL
-
CIA
31h 30m
3 stops
Multiple Airlines Logo
6:00 am - 8:19 pm
CIA
-
STL
21h 19m
3 stops
$1,241Multiple Airlines
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
2:40 pm - 5:30 pm
STL
-
CIA
19h 50m
3 stops
Multiple Airlines Logo
9:50 pm - 2:00 pm
CIA
-
STL
23h 10m
2 stops
$1,349Multiple Airlines
Tue, Oct 6 - Sat, Oct 17
Multiple Airlines Logo
2:40 pm - 9:15 pm
STL
-
CIA
23h 35m
2 stops
Multiple Airlines Logo
9:50 pm - 2:00 pm
CIA
-
STL
23h 10m
2 stops
$1,360Multiple Airlines
Tue, Oct 6 - Sat, Oct 17
Multiple Airlines Logo
8:40 am - 7:25 pm
STL
-
CIA
27h 45m
2 stops
Multiple Airlines Logo
9:45 pm - 8:25 pm
CIA
-
STL
29h 40m
2 stops
$1,455Multiple Airlines
Sun, Jun 7 - Mon, Jun 15
Multiple Airlines Logo
1:05 pm - 7:25 pm
STL
-
CIA
23h 20m
3 stops
Multiple Airlines Logo
9:45 pm - 8:25 pm
CIA
-
STL
29h 40m
2 stops
$1,456Multiple Airlines
Sun, Jun 7 - Mon, Jun 15
Multiple Airlines Logo
1:05 pm - 8:00 pm
STL
-
CIA
23h 55m
3 stops
Multiple Airlines Logo
4:35 pm - 8:25 pm
CIA
-
STL
34h 50m
3 stops
$1,561Multiple Airlines
Mon, Jun 8 - Thu, Jun 18
Multiple Airlines Logo
2:15 pm - 7:25 pm
STL
-
CIA
22h 10m
2 stops
Multiple Airlines Logo
5:10 pm - 8:25 pm
CIA
-
STL
34h 15m
3 stops
$1,586Multiple Airlines
Sun, May 24 - Sun, May 31
Multiple Airlines Logo
7:22 am - 7:25 pm
STL
-
CIA
29h 03m
3 stops
Multiple Airlines Logo
5:10 pm - 8:25 pm
CIA
-
STL
34h 15m
3 stops
$1,660Multiple Airlines
Sun, May 24 - Sun, May 31
Multiple Airlines Logo
2:15 pm - 8:55 pm
STL
-
CIA
23h 40m
3 stops
Multiple Airlines Logo
6:00 am - 8:25 pm
CIA
-
STL
21h 25m
2 stops
$1,693Multiple Airlines
Sun, May 24 - Wed, Jun 3
Multiple Airlines Logo
1:20 pm - 8:20 pm
STL
-
CIA
24h 00m
3 stops
Multiple Airlines Logo
6:25 pm - 8:07 pm
CIA
-
STL
32h 42m
3 stops
$1,787Multiple Airlines
Tue, Jun 30 - Tue, Jul 7

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 April 12, 2026.
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

Cheapest round-trip

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Thu 5/7

7:05 am-9:35 pm

3 stops31h 30m

Rome Ciampino

Thu 5/14

6:00 am-8:19 pm

3 stops21h 19m

$1,241
Quickest round-trip

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Tue 10/6

2:40 pm-5:30 pm

3 stops19h 50m

Rome Ciampino

Sat 10/17

9:50 pm-2:00 pm

2 stops23h 10m

$1,349

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Tue 10/6

2:40 pm-9:15 pm

2 stops23h 35m

Rome Ciampino

Sat 10/17

9:50 pm-2:00 pm

2 stops23h 10m

$1,360

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Sun 6/7

8:40 am-7:25 pm

2 stops27h 45m

Rome Ciampino

Mon 6/15

9:45 pm-8:25 pm

2 stops29h 40m

$1,455

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Sun 6/7

1:05 pm-7:25 pm

3 stops23h 20m

Rome Ciampino

Mon 6/15

9:45 pm-8:25 pm

2 stops29h 40m

$1,456

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Mon 6/8

1:05 pm-8:00 pm

3 stops23h 55m

Rome Ciampino

Thu 6/18

4:35 pm-8:25 pm

3 stops34h 50m

$1,561

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Sun 5/24

2:15 pm-7:25 pm

2 stops22h 10m

Rome Ciampino

Sun 5/31

5:10 pm-8:25 pm

3 stops34h 15m

$1,586

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Sun 5/24

7:22 am-7:25 pm

3 stops29h 03m

Rome Ciampino

Sun 5/31

5:10 pm-8:25 pm

3 stops34h 15m

$1,660

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Sun 5/24

2:15 pm-8:55 pm

3 stops23h 40m

Rome Ciampino

Wed 6/3

6:00 am-8:25 pm

2 stops21h 25m

$1,693

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Tue 6/30

1:20 pm-8:20 pm

3 stops24h 00m

Rome Ciampino

Tue 7/7

6:25 pm-8:07 pm

3 stops32h 42m

$1,787

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

Fastest flight time

19h 50m

Direct flights

None
The fastest flight from St. Louis to Rome Ciampino Airport takes 19h 50m
There are no direct flights from St. Louis to Rome Ciampino Airport. There are no popular flight routes from St. Louis to Rome Ciampino Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to Rome Ciampino Airport

  • 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 19h 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.

Frequently asked questions about flying from St. Louis to Rome Ciampino Airport

  • 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
Gaeta
Montepulciano
Orvieto
Pienza
Chianciano Terme
Terracina
Tivoli
Ladispoli
Sperlonga
Santa Marinella
Ascoli Piceno
Ciampino
Saturnia
Grosseto
Orbetello
Cortona

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
Tue 5/12
Tue 5/19
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 Milan Malpensa Airportfrom $435
Flights to Rome Fiumicino Airportfrom $420
Flights to Milan Linate Airportfrom $512
Flights to Venice Marco Polo Airportfrom $406
Flights to Venice Treviso A. Canova Airportfrom $660