Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Rome from $291

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 7/28. 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

Discover deals from 900+ travel sites with momondo.

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.
Finnair Logo
5:21 pm - 6:00 pm
STL
-
FCO
17h 39m
2 stops
Finnair Logo
10:30 am - 10:17 pm
FCO
-
STL
18h 47m
2 stops
$516Finnair
Wed, Apr 15 - Wed, Apr 22
Finnair Logo
5:21 pm - 6:00 pm
STL
-
FCO
17h 39m
2 stops
Finnair Logo
10:00 am - 10:17 pm
FCO
-
STL
19h 17m
1 stop
$517Finnair
Wed, Apr 15 - Wed, Apr 22
British Airways Logo
1:29 pm - 7:05 am
STL
-
FCO
34h 36m
1 stop
British Airways Logo
10:00 am - 4:41 pm
FCO
-
STL
13h 41m
1 stop
$559British Airways
Wed, Apr 15 - Wed, Apr 22
Delta Logo
10:50 am - 9:10 am
STL
-
FCO
16h 20m
2 stops
Delta Logo
9:45 am - 11:58 pm
FCO
-
STL
21h 13m
1 stop
$645Delta
Tue, Mar 24 - Tue, Mar 31
Delta Logo
10:50 am - 9:10 am
STL
-
FCO
16h 20m
2 stops
Delta Logo
10:35 am - 11:25 pm
FCO
-
STL
19h 50m
2 stops
$646Delta
Tue, Mar 24 - Tue, Mar 31
Lufthansa Logo
6:49 pm - 10:00 pm
STL
-
FCO
20h 11m
2 stops
Lufthansa Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$657Lufthansa
Tue, Aug 18 - Tue, Aug 25
Lufthansa Logo
3:30 pm - 2:05 pm
STL
-
FCO
15h 35m
1 stop
Lufthansa Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$665Lufthansa
Tue, Aug 18 - Tue, Aug 25
Air Canada Logo
12:10 pm - 11:45 am
STL
-
FCO
16h 35m
1 stop
Air Canada Logo
11:30 am - 2:18 pm
FCO
-
STL
33h 48m
2 stops
$676Air Canada
Tue, Aug 18 - Tue, Aug 25
United Airlines Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
United Airlines Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$684United Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
3:30 pm - 2:05 pm
STL
-
FCO
15h 35m
1 stop
Multiple Airlines Logo
6:50 am - 6:27 pm
FCO
-
STL
18h 37m
2 stops
$686Multiple Airlines
Wed, Aug 12 - Wed, Aug 19

Lufthansa flights from St. Louis to Rome

Our best Lufthansa deals on St. Louis to Rome flight tickets
Lufthansa
Aug 18
STL6:49 pmLambert-St Louis
20h 11m
2 stops
FCO10:00 pmRome Fiumicino
Aug 25
FCO6:50 amRome Fiumicino
13h 35m
1 stop
STL1:25 pmLambert-St Louis
$657
Lufthansa
Aug 18
STL3:30 pmLambert-St Louis
15h 35m
1 stop
FCO2:05 pmRome Fiumicino
Aug 25
FCO6:50 amRome Fiumicino
13h 35m
1 stop
STL1:25 pmLambert-St Louis
$665
Lufthansa
Mar 7
STL11:40 amLambert-St Louis
18h 10m
2 stops
FCO12:50 pmRome Fiumicino
Mar 15
FCO7:05 amRome Fiumicino
22h 46m
2 stops
STL11:51 pmLambert-St Louis
$1,117

Delta flights from St. Louis to Rome

Our best Delta deals on St. Louis to Rome flight tickets
Delta
Mar 24
STL10:50 amLambert-St Louis
16h 20m
2 stops
FCO9:10 amRome Fiumicino
Mar 31
FCO9:45 amRome Fiumicino
21h 13m
1 stop
STL11:58 pmLambert-St Louis
$645
Delta
Mar 24
STL10:50 amLambert-St Louis
16h 20m
2 stops
FCO9:10 amRome Fiumicino
Mar 31
FCO10:35 amRome Fiumicino
19h 50m
2 stops
STL11:25 pmLambert-St Louis
$646
Delta
Mar 23
STL10:12 amLambert-St Louis
14h 43m
1 stop
FCO6:55 amRome Fiumicino
Mar 31
FCO6:30 amRome Fiumicino
16h 46m
2 stops
STL4:16 pmLambert-St Louis
$708

momondo 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, momondo users made 832,500 searches. Data last updated February 23, 2026.
Use the filters below to find and compare flights from St. Louis to Rome that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

5:21 pm-6:00 pm

2 stops17h 39m

Rome Fiumicino

Wed 4/22

10:30 am-10:17 pm

2 stops18h 47m

$516

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

5:21 pm-6:00 pm

2 stops17h 39m

Rome Fiumicino

Wed 4/22

10:00 am-10:17 pm

1 stop19h 17m

$517

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

1:29 pm-7:05 am

1 stop34h 36m

Rome Fiumicino

Wed 4/22

10:00 am-4:41 pm

1 stop13h 41m

$559

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 3/24

10:50 am-9:10 am

2 stops16h 20m

Rome Fiumicino

Tue 3/31

9:45 am-11:58 pm

1 stop21h 13m

$645

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 3/24

10:50 am-9:10 am

2 stops16h 20m

Rome Fiumicino

Tue 3/31

10:35 am-11:25 pm

2 stops19h 50m

$646

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

6:49 pm-10:00 pm

2 stops20h 11m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$657

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

3:30 pm-2:05 pm

1 stop15h 35m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$665

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

12:10 pm-11:45 am

1 stop16h 35m

Rome Fiumicino

Tue 8/25

11:30 am-2:18 pm

2 stops33h 48m

$676

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$684

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/12

3:30 pm-2:05 pm

1 stop15h 35m

Rome Fiumicino

Wed 8/19

6:50 am-6:27 pm

2 stops18h 37m

$686

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to Rome from

How to get the cheapest flight ticket from St. Louis to Rome

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Rome?

What is the cheapest month to fly to Rome?

The cheapest month to fly to Rome from St. Louis is in February. Flight prices, which tend to average around $540, are often lower during this time because this is during the off-season. If you aren’t able to travel to Rome during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $678.

How far in advance should I book a flight to Rome?

You are more likely to see cheaper flights to Rome from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Rome for around $908 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Rome from St. Louis for as low as $731 on momondo.

Can stopping save me money on St. Louis to Rome flights?

You could potentially save up to 16% on your flight if you consider stops on a St. Louis to Rome flight.

How have St. Louis to Rome flight prices changed over time?

When to book flights from St. Louis to Rome

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

Cheap St. Louis to Rome (STL to ROM) flight deals and tips

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

Fastest flight time

13h 15m

Direct flights

None
The fastest flight from St. Louis to Rome takes 13h 15m
There are no direct flights from St. Louis to Rome. There are no popular flight routes from St. Louis to Rome.
Search flight deals

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

    A flight from Lambert-St Louis to Rome will travel around 5053.3 mi. Typically, this will take 13h 15m by plane in normal conditions.

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

    Prices for flights from Lambert-St Louis Airport to Rome were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Rome?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Rome.

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

    The necessary travel and health documents for your Rome trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Rome?

Best airlines flying from St. Louis to Rome

Compare and see reviews for airlines that fly from St. Louis to Rome with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $472Free CancellationRating
6.7
7,761 reviews
Search British Airways flights
LufthansaPriceFrom $506Free CancellationRating
6.8
7,808 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.7
1,458 reviews
Search KLM flights
United AirlinesPriceFrom $549Free CancellationRating
7.4
9,344 reviews
Search United Airlines flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,239 reviews
Search Delta flights
American AirlinesPriceFrom $665Free CancellationRating
7.2
11,340 reviews
Search American Airlines flights
Air CanadaPriceFrom $705Free CancellationRating
7.1
10,742 reviews
Search Air Canada flights

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
Pienza
Tivoli
Orvieto
Sperlonga
Chianciano Terme
Terracina
Saturnia
Santa Marinella
Ciampino
Sabaudia
Grosseto
Ascoli Piceno
Cortona
Orbetello

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Rome. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Rome from St. Louis with this policy.

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?

If you are not ready to book a flight from St. Louis to Rome now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Rome and let you know when they change.

An easier way to manage your Rome 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 3/25
Wed 4/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Italy

Fly into one of these airports located in Rome

Airports listed have a maximum distance of 14.7 mi from Rome
Rome Ciampino Airport
Rome Fiumicino Airport