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

Montreal (YUL) was the most common stop: 43% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Philadelphia (PHL) offer the lowest average round-trip price of $536.

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

Delta and United Airlines are the most popular carriers operating from Lambert-St Louis to Rome

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 airlines fly to Rome?

American Airlines, United Airlines and Delta 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 33% 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.

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 July 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.

$198 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 $1,130 to $1,604. The lowest price recently found on this route was $452.

Discover deals from 900+ travel sites with momondo.

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.

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$452Aer Lingus

Wed, Aug 19 - Wed, Aug 26

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$453Aer Lingus

Wed, Aug 19 - Wed, Aug 26

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$460Aer Lingus

Mon, Aug 17 - Wed, Aug 26

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$483Aer Lingus

Sun, Aug 9 - Tue, Aug 25

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$501Aer Lingus

Mon, Aug 10 - Fri, Aug 21

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$502Aer Lingus

Sun, Aug 9 - Tue, Aug 25

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$503Aer Lingus

Thu, Aug 13 - Wed, Aug 26

8:55 am - 10:25 am

STL

FCO

18h 30m

2 stops

7:30 am - 8:24 pm

FCO

STL

19h 54m

2 stops

$504Aer Lingus

Thu, Aug 13 - Wed, Aug 26

12:10 pm - 9:35 pm

STL

CIA

26h 25m

3 stops

6:00 am - 8:24 pm

CIA

STL

21h 24m

3 stops

$1,138Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

12:10 pm - 4:15 pm

STL

CIA

21h 05m

3 stops

9:40 pm - 8:24 pm

CIA

STL

29h 44m

2 stops

$1,208Multiple Airlines

Thu, Aug 13 - Wed, Aug 26

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Lufthansa flights from St. Louis to Rome

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

Lufthansa

Nov 8

STL1:08 pmLambert-St Louis

16h 32m

2 stops

FCO12:40 pmRome Fiumicino

Nov 18

FCO7:05 amRome Fiumicino

13h 40m

1 stop

STL1:45 pmLambert-St Louis

$770

Lufthansa

Nov 9

STL7:04 pmLambert-St Louis

20h 56m

2 stops

FCO11:00 pmRome Fiumicino

Nov 18

FCO7:05 amRome Fiumicino

13h 40m

1 stop

STL1:45 pmLambert-St Louis

$774

Lufthansa

Jul 22

STL3:22 pmLambert-St Louis

14h 13m

2 stops

FCO12:35 pmRome Fiumicino

Aug 12

FCO11:00 amRome Fiumicino

19h 38m

1 stop

STL11:38 pmLambert-St Louis

$7,153

Aer Lingus flights from St. Louis to Rome

Our best Aer Lingus deals on St. Louis to Rome flight tickets

Aer Lingus

Aug 19

STL8:55 amLambert-St Louis

18h 30m

2 stops

FCO10:25 amRome Fiumicino

Aug 26

FCO7:30 amRome Fiumicino

19h 54m

2 stops

STL8:24 pmLambert-St Louis

$452

Aer Lingus

Aug 19

STL8:55 amLambert-St Louis

18h 30m

2 stops

FCO10:25 amRome Fiumicino

Aug 26

FCO7:30 amRome Fiumicino

19h 54m

2 stops

STL8:24 pmLambert-St Louis

$453

Aer Lingus

Aug 17

STL8:55 amLambert-St Louis

18h 30m

2 stops

FCO10:25 amRome Fiumicino

Aug 26

FCO7:30 amRome Fiumicino

19h 54m

2 stops

STL8:24 pmLambert-St Louis

$460

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/19

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Wed 8/26

7:30 am-8:24 pm

2 stops19h 54m

$452

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/19

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Wed 8/26

7:30 am-8:24 pm

2 stops19h 54m

$453

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/17

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Wed 8/26

7:30 am-8:24 pm

2 stops19h 54m

$460

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/9

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Tue 8/25

7:30 am-8:24 pm

2 stops19h 54m

$483

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 8/10

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Fri 8/21

7:30 am-8:24 pm

2 stops19h 54m

$501

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 8/9

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Tue 8/25

7:30 am-8:24 pm

2 stops19h 54m

$502

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 8/13

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Wed 8/26

7:30 am-8:24 pm

2 stops19h 54m

$503

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Thu 8/13

8:55 am-10:25 am

2 stops18h 30m

Rome Fiumicino

Wed 8/26

7:30 am-8:24 pm

2 stops19h 54m

$504

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Thu 8/13

12:10 pm-9:35 pm

3 stops26h 25m

Rome Ciampino

Thu 8/20

6:00 am-8:24 pm

3 stops21h 24m

$1,138

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Thu 8/13

12:10 pm-4:15 pm

3 stops21h 05m

Rome Ciampino

Wed 8/26

9:40 pm-8:24 pm

2 stops29h 44m

$1,208

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 January. Flight prices, which tend to average around $442, 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 January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $454.

How far in advance should I book a flight from St. Louis 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 $978 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 $729 on momondo.

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

You could potentially save up to 46% 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.

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Frequently asked questions about flying from St. Louis to Rome

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 July 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 (15%), and British Airways (14%).

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 8,121 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,142 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,541 reviews	Search KLM flights
United Airlines	PriceFrom $549	Free Cancellation	Rating 7.4 9,999 reviews	Search United Airlines flights
Delta	PriceFrom $566	Free Cancellation	Rating 7.8 8,474 reviews	Search Delta flights
American Airlines	PriceFrom $665	Free Cancellation	Rating 7.1 11,819 reviews	Search American Airlines flights
Air Canada	PriceFrom $794	Free Cancellation	Rating 7.1 11,349 reviews	Search Air Canada flights

Fiumicino

Civitavecchia

Cassino

Gaeta

Orvieto

Montepulciano

Ponza

Ladispoli

Chianciano Terme

Pienza

Tivoli

Terracina

Sperlonga

Orbetello

Ciampino

Saturnia

Santa Marinella

Ascoli Piceno

Porto Ercole

Sabaudia

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 $198

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 10/18. 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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Lufthansa flights from St. Louis to Rome

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

Aer Lingus flights from St. Louis to Rome

Our best Aer Lingus deals on St. Louis to Rome flight tickets

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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 from St. Louis 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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

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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

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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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