What airlines fly to Rome?

American Airlines, United Airlines and Air Canada are the top three most popular airlines that fly to Rome from St. Louis according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Rome. Keep in mind that there are 7 different airlines that fly to Rome on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from St. Louis to Rome?

Flights connecting via Philadelphia (PHL) have the shortest average one-way travel time: 11h 11m.

What is the cheapest airline that flies from Lambert-St Louis to Rome?

British Airways and KLM are the most popular carriers operating from Lambert-St Louis to Rome

Which layover airport offers the lowest fares from St. Louis to Rome?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $457.

Which airport is the most popular layover for flights between St. Louis and Rome?

Montreal (YUL) was the most common stop: 29% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from St. Louis to Rome?

Philadelphia (PHL) has the shortest average layover time for this route: 1h 15m.

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?

As of March 2026, there are 7 operators available to choose from 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.

$359 Cheap Flights from St. Louis to Rome in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Rome

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:42 pm - 11:05 am

STL

FCO

36h 23m

2 stops

11:55 am - 11:37 pm

FCO

STL

42h 42m

2 stops

$669Scandinavian Airlines

Mon, Aug 17 - Wed, Aug 26

1:01 pm - 10:20 am

STL

FCO

14h 19m

1 stop

10:00 am - 7:14 pm

FCO

STL

16h 14m

1 stop

$685British Airways

Mon, Aug 17 - Wed, Aug 26

7:23 am - 9:10 am

STL

FCO

18h 47m

1 stop

10:00 am - 7:14 pm

FCO

STL

16h 14m

1 stop

$690American Airlines

Mon, Aug 17 - Wed, Aug 26

1:37 pm - 9:10 am

STL

FCO

12h 33m

1 stop

8:15 pm - 7:30 pm

FCO

STL

30h 15m

1 stop

$695British Airways

Mon, Aug 10 - Tue, Aug 18

9:35 pm - 4:55 pm

STL

FCO

12h 20m

1 stop

1:10 pm - 11:03 pm

FCO

STL

16h 53m

1 stop

$700Multiple Airlines

Wed, Aug 5 - Wed, Aug 19

4:18 pm - 3:10 pm

STL

FCO

15h 52m

2 stops

1:10 pm - 11:41 pm

FCO

STL

17h 31m

1 stop

$704British Airways

Mon, Aug 17 - Wed, Aug 26

3:42 pm - 11:05 am

STL

FCO

36h 23m

2 stops

9:30 am - 11:37 pm

FCO

STL

21h 07m

2 stops

$711Scandinavian Airlines

Thu, Aug 27 - Sun, Sep 6

9:35 pm - 4:55 pm

STL

FCO

12h 20m

1 stop

1:10 pm - 11:03 pm

FCO

STL

16h 53m

1 stop

$725Multiple Airlines

Wed, Aug 5 - Wed, Aug 19

9:35 pm - 4:55 pm

STL

FCO

12h 20m

1 stop

1:10 pm - 11:03 pm

FCO

STL

16h 53m

1 stop

$750Multiple Airlines

Wed, Aug 5 - Wed, Aug 19

1:01 pm - 10:20 am

STL

FCO

14h 19m

1 stop

10:00 am - 11:51 pm

FCO

STL

20h 51m

1 stop

$751British Airways

Wed, Aug 5 - Wed, Aug 19

Turkish Airlines flights from St. Louis to Rome

Our best Turkish Airlines deals on St. Louis to Rome flight tickets

Turkish Airlines

Apr 10

STL7:45 amLambert-St Louis

18h 35m

2 stops

FCO9:20 amRome Fiumicino

Apr 17

FCO3:35 pmRome Fiumicino

36h 38m

2 stops

STL9:13 pmLambert-St Louis

$934

Turkish Airlines

Apr 10

STL7:45 amLambert-St Louis

23h 25m

2 stops

FCO2:10 pmRome Fiumicino

Apr 16

FCO7:05 amRome Fiumicino

21h 08m

2 stops

STL9:13 pmLambert-St Louis

$944

Finnair flights from St. Louis to Rome

Our best Finnair deals on St. Louis to Rome flight tickets

Finnair

May 11

STL5:21 pmLambert-St Louis

17h 39m

2 stops

FCO6:00 pmRome Fiumicino

May 20

FCO10:30 amRome Fiumicino

18h 49m

2 stops

STL10:19 pmLambert-St Louis

$888

Finnair

Apr 20

STL12:27 pmLambert-St Louis

16h 38m

1 stop

FCO12:05 pmRome Fiumicino

May 6

FCO10:30 amRome Fiumicino

18h 47m

2 stops

STL10:17 pmLambert-St Louis

$902

Finnair

May 11

STL5:21 pmLambert-St Louis

17h 39m

2 stops

FCO6:00 pmRome Fiumicino

May 20

FCO10:30 amRome Fiumicino

18h 49m

2 stops

STL10:19 pmLambert-St Louis

$937

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/17

3:42 pm-11:05 am

2 stops36h 23m

Rome Fiumicino

Wed 8/26

11:55 am-11:37 pm

2 stops42h 42m

$669

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/17

1:01 pm-10:20 am

1 stop14h 19m

Rome Fiumicino

Wed 8/26

10:00 am-7:14 pm

1 stop16h 14m

$685

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/17

7:23 am-9:10 am

1 stop18h 47m

Rome Fiumicino

Wed 8/26

10:00 am-7:14 pm

1 stop16h 14m

$690

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/10

1:37 pm-9:10 am

1 stop12h 33m

Rome Fiumicino

Tue 8/18

8:15 pm-7:30 pm

1 stop30h 15m

$695

Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

9:35 pm-4:55 pm

1 stop12h 20m

Rome Fiumicino

Wed 8/19

1:10 pm-11:03 pm

1 stop16h 53m

$700

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/17

4:18 pm-3:10 pm

2 stops15h 52m

Rome Fiumicino

Wed 8/26

1:10 pm-11:41 pm

1 stop17h 31m

$704

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 8/27

3:42 pm-11:05 am

2 stops36h 23m

Rome Fiumicino

Sun 9/6

9:30 am-11:37 pm

2 stops21h 07m

$711

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

9:35 pm-4:55 pm

1 stop12h 20m

Rome Fiumicino

Wed 8/19

1:10 pm-11:03 pm

1 stop16h 53m

$725

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

9:35 pm-4:55 pm

1 stop12h 20m

Rome Fiumicino

Wed 8/19

1:10 pm-11:03 pm

1 stop16h 53m

$750

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

1:01 pm-10:20 am

1 stop14h 19m

Rome Fiumicino

Wed 8/19

10:00 am-11:51 pm

1 stop20h 51m

$751

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 $663.

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 $897 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 4% 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	11h 50m
Direct flights	None

The fastest flight from St. Louis to Rome takes 11h 50m

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 11h 50m 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?
As of March 2026, there are 7 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Rome is United Airlines (34% of total bookings). The next most popular airlines are Air Canada (16%), Delta (16%), and American Airlines (11%).

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 Airways	PriceFrom $472	Free Cancellation	Rating 6.7 7,803 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 7,857 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,472 reviews	Search KLM flights
United Airlines	PriceFrom $543	Free Cancellation	Rating 7.4 9,444 reviews	Search United Airlines flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 8,301 reviews	Search Delta flights
American Airlines	PriceFrom $665	Free Cancellation	Rating 7.1 11,480 reviews	Search American Airlines flights
Air Canada	PriceFrom $705	Free Cancellation	Rating 7.1 10,817 reviews	Search Air Canada flights

Fiumicino

Civitavecchia

Cassino

Ponza

Gaeta

Montepulciano

Pienza

Tivoli

Orvieto

Sperlonga

Chianciano Terme

Terracina

Santa Marinella

Ascoli Piceno

Ciampino

Sabaudia

Saturnia

Grosseto

Orbetello

Cortona

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

Sat 4/18

Sat 4/25

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Italy

Nearby airports

Airlines

Cabin classes

Other Italy destinations

Other flights from St. Louis

Complete your trip

Feeling lucky

Fly into one of these airports located in Rome

Rome Ciampino Airport

Rome Fiumicino Airport

Cheap flights from St. Louis to Rome from $426

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 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Rome

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Turkish Airlines flights from St. Louis to Rome

Our best Turkish Airlines deals on St. Louis to Rome flight tickets

Finnair flights from St. Louis to Rome

Our best Finnair deals on St. Louis to Rome flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Rome that are best for you.

See travel insights to Rome from

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

What is the cheapest month to fly to Rome?

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

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

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

What is the cheapest airline that flies from Lambert-St Louis to Rome?

What airlines fly to Rome?

Which airport is the most popular layover for flights between St. Louis and Rome?

Which layover airport offers the lowest fares from St. Louis to Rome?

Which layover airport has the shortest travel time from St. Louis to Rome?

Which layover airport has the shortest connection time from St. Louis to Rome?

When to book flights from St. Louis to Rome

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

Direct flights

Best airlines flying from St. Louis to Rome

Compare and see reviews for airlines that fly from St. Louis to Rome with momondo

Traveling to a place near Rome?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Rome

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Rome

List of cabin classes available on flights landing in Rome. Availability may vary depending on flight origin and airline.

Popular cities in Italy

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from St. Louis

According to popular flight searches on momondo this year

Complete your trip to Rome

Explore popular destinations other users love

According to popular flight searches on momondo this year