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.

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 39% 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.

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 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.

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

United Airlines, Aer Lingus, and KLM are the most popular carriers operating from Lambert-St Louis to Rome

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 February 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.

$314 Cheap Flights from St. Louis to Rome in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $646 to $1,407. The lowest price recently found on this route was $625.

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:30 pm - 11:05 am

STL

FCO

38h 35m

2 stops

7:25 pm - 8:50 pm

FCO

STL

32h 25m

2 stops

$625Scandinavian Airlines

ven., août 14 - dim., août 16

6:49 pm - 10:00 pm

STL

FCO

20h 11m

2 stops

6:50 am - 1:25 pm

FCO

STL

13h 35m

1 stop

$658Lufthansa

mar., août 18 - mar., août 25

3:42 pm - 8:40 am

STL

FCO

33h 58m

2 stops

11:55 am - 8:50 pm

FCO

STL

39h 55m

2 stops

$659Scandinavian Airlines

ven., août 14 - jeu., août 20

3:30 pm - 2:05 pm

STL

FCO

15h 35m

1 stop

6:50 am - 1:25 pm

FCO

STL

13h 35m

1 stop

$665Lufthansa

mar., août 18 - mar., août 25

9:35 pm - 10:55 pm

STL

FCO

18h 20m

1 stop

1:30 pm - 11:55 pm

FCO

STL

17h 25m

1 stop

$684British Airways

mer., août 12 - mer., août 19

12:10 pm - 9:15 am

STL

FCO

14h 05m

1 stop

11:30 am - 6:27 pm

FCO

STL

13h 57m

1 stop

$688United Airlines

mer., août 12 - mer., août 19

3:42 pm - 11:05 am

STL

FCO

36h 23m

2 stops

11:55 am - 8:50 pm

FCO

STL

39h 55m

2 stops

$689Scandinavian Airlines

sam., août 15 - jeu., août 20

1:01 pm - 10:20 am

STL

FCO

14h 19m

1 stop

1:30 pm - 11:55 pm

FCO

STL

17h 25m

1 stop

$691British Airways

mer., août 5 - mer., août 19

12:10 pm - 9:15 am

STL

FCO

14h 05m

1 stop

1:20 pm - 1:25 pm

FCO

STL

31h 05m

1 stop

$692Multiple Airlines

mer., août 12 - lun., août 24

4:05 pm - 11:00 pm

STL

FCO

24h 55m

2 stops

11:30 am - 9:08 pm

FCO

STL

40h 38m

2 stops

$693Multiple Airlines

lun., mars 23 - mar., mars 31

British Airways flights from St. Louis to Rome

Our best British Airways deals on St. Louis to Rome flight tickets

British Airways

Aug 5

STL1:01 pmLambert-St Louis

14h 19m

1 stop

FCO10:20 amRome Fiumicino

Aug 19

FCO1:30 pmRome Fiumicino

17h 25m

1 stop

STL11:55 pmLambert-St Louis

$691

British Airways

Aug 12

STL9:35 pmLambert-St Louis

18h 20m

1 stop

FCO10:55 pmRome Fiumicino

Aug 18

FCO8:15 pmRome Fiumicino

30h 15m

1 stop

STL7:30 pmLambert-St Louis

$719

British Airways

Apr 14

STL8:03 pmLambert-St Louis

30h 07m

1 stop

FCO9:10 amRome Fiumicino

Apr 22

FCO10:00 amRome Fiumicino

13h 41m

1 stop

STL4:41 pmLambert-St Louis

$722

Air Canada flights from St. Louis to Rome

Our best Air Canada deals on St. Louis to Rome flight tickets

Air Canada

Aug 5

STL12:10 pmLambert-St Louis

14h 05m

1 stop

FCO9:15 amRome Fiumicino

Aug 19

FCO6:50 amRome Fiumicino

18h 37m

2 stops

STL6:27 pmLambert-St Louis

$698

Air Canada

Aug 18

STL10:24 amLambert-St Louis

18h 21m

2 stops

FCO11:45 amRome Fiumicino

Aug 25

FCO11:30 amRome Fiumicino

35h 08m

2 stops

STL3:38 pmLambert-St Louis

$700

Air Canada

Aug 5

STL12:10 pmLambert-St Louis

14h 05m

1 stop

FCO9:15 amRome Fiumicino

Aug 19

FCO6:50 amRome Fiumicino

20h 12m

2 stops

STL8:02 pmLambert-St Louis

$702

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

ven. 8/14

1:30 pm-11:05 am

2 stops38h 35m

Rome Fiumicino

dim. 8/16

7:25 pm-8:50 pm

2 stops32h 25m

$625

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 8/18

6:49 pm-10:00 pm

2 stops20h 11m

Rome Fiumicino

mar. 8/25

6:50 am-1:25 pm

1 stop13h 35m

$658

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

ven. 8/14

3:42 pm-8:40 am

2 stops33h 58m

Rome Fiumicino

jeu. 8/20

11:55 am-8:50 pm

2 stops39h 55m

$659

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mar. 8/18

3:30 pm-2:05 pm

1 stop15h 35m

Rome Fiumicino

mar. 8/25

6:50 am-1:25 pm

1 stop13h 35m

$665

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mer. 8/12

9:35 pm-10:55 pm

1 stop18h 20m

Rome Fiumicino

mer. 8/19

1:30 pm-11:55 pm

1 stop17h 25m

$684

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mer. 8/12

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

mer. 8/19

11:30 am-6:27 pm

1 stop13h 57m

$688

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

sam. 8/15

3:42 pm-11:05 am

2 stops36h 23m

Rome Fiumicino

jeu. 8/20

11:55 am-8:50 pm

2 stops39h 55m

$689

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mer. 8/5

1:01 pm-10:20 am

1 stop14h 19m

Rome Fiumicino

mer. 8/19

1:30 pm-11:55 pm

1 stop17h 25m

$691

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mer. 8/12

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

lun. 8/24

1:20 pm-1:25 pm

1 stop31h 05m

$692

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

lun. 3/23

4:05 pm-11:00 pm

2 stops24h 55m

Rome Fiumicino

mar. 3/31

11:30 am-9:08 pm

2 stops40h 38m

$693

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 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	12h 45m
Direct flights	None

The fastest flight from St. Louis to Rome takes 12h 45m

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 12h 45m 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 February 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 (35% of total bookings). The next most popular airlines are Delta (16%), Air Canada (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 7,772 reviews	Search British Airways flights
Lufthansa	PriceFrom $506	Free Cancellation	Rating 6.8 7,818 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.7 1,461 reviews	Search KLM flights
United Airlines	PriceFrom $549	Free Cancellation	Rating 7.4 9,366 reviews	Search United Airlines flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 8,244 reviews	Search Delta flights
American Airlines	PriceFrom $665	Free Cancellation	Rating 7.1 11,370 reviews	Search American Airlines flights
Air Canada	PriceFrom $705	Free Cancellation	Rating 7.1 10,757 reviews	Search Air Canada flights

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.

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Cheap flights from St. Louis to Rome from $314

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 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from St. Louis to Rome

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

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

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Why use momondo?

An easier way to manage your Rome trip

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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

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

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