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

Aer Lingus, Air Canada, and Delta are the most popular carriers operating from Lambert-St Louis to Rome

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 44% 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 offers the lowest fares from St. Louis to Rome?

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

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.

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

Montreal (YUL) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

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.

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 May 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.

$397 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 $1,431 to $998. The lowest price recently found on this route was $791.

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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.

9:31 am - 9:10 am

STL

FCO

16h 39m

1 stop

1:30 pm - 10:40 pm

FCO

STL

16h 10m

1 stop

$791British Airways

Wed, Aug 5 - Wed, Aug 19

12:10 pm - 9:15 am

STL

FCO

14h 05m

1 stop

6:50 am - 6:42 pm

FCO

STL

18h 52m

2 stops

$817Air Canada

Wed, Aug 5 - Wed, Aug 19

7:20 am - 9:15 am

STL

FCO

18h 55m

2 stops

2:20 pm - 6:42 pm

FCO

STL

35h 22m

1 stop

$822Air Canada

Wed, Aug 5 - Wed, Aug 19

12:10 pm - 11:45 am

STL

FCO

16h 35m

2 stops

11:30 am - 6:42 pm

FCO

STL

14h 12m

1 stop

$825Air Canada

Wed, Aug 5 - Wed, Aug 19

1:13 pm - 10:20 am

STL

FCO

14h 07m

2 stops

6:50 am - 6:42 pm

FCO

STL

18h 52m

2 stops

$826Air Canada

Wed, Aug 5 - Wed, Aug 19

12:10 pm - 11:45 am

STL

FCO

16h 35m

2 stops

2:20 pm - 2:02 pm

FCO

STL

30h 42m

2 stops

$834Air Canada

Wed, Aug 5 - Wed, Aug 19

7:05 pm - 7:55 am

STL

FCO

29h 50m

1 stop

12:25 pm - 2:02 pm

FCO

STL

32h 37m

1 stop

$897United Airlines

Sun, Jul 19 - Fri, Jul 31

12:10 pm - 9:15 am

STL

FCO

14h 05m

1 stop

12:25 pm - 2:02 pm

FCO

STL

32h 37m

1 stop

$908Air Canada

Wed, Jul 22 - Wed, Jul 29

6:00 am - 11:45 am

STL

FCO

22h 45m

2 stops

12:25 pm - 2:02 pm

FCO

STL

32h 37m

1 stop

$913United Airlines

Sun, Jul 19 - Fri, Jul 31

9:15 am - 9:15 am

STL

FCO

17h 00m

2 stops

12:25 pm - 11:44 pm

FCO

STL

18h 19m

2 stops

$923United Airlines

Wed, Jul 22 - Wed, Jul 29

Scandinavian Airlines flights from St. Louis to Rome

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

Scandinavian Airlines

Sep 13

STL3:42 pmLambert-St Louis

19h 53m

2 stops

FCO6:35 pmRome Fiumicino

Sep 19

FCO7:25 pmRome Fiumicino

32h 25m

2 stops

STL8:50 pmLambert-St Louis

$779

Scandinavian Airlines

Aug 24

STL3:39 pmLambert-St Louis

19h 56m

2 stops

FCO6:35 pmRome Fiumicino

Sep 2

FCO7:25 pmRome Fiumicino

35h 12m

2 stops

STL11:37 pmLambert-St Louis

$801

Scandinavian Airlines

Sep 7

STL3:42 pmLambert-St Louis

19h 53m

2 stops

FCO6:35 pmRome Fiumicino

Sep 20

FCO7:25 pmRome Fiumicino

35h 12m

2 stops

STL11:37 pmLambert-St Louis

$893

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 52m

2 stops

STL6:42 pmLambert-St Louis

$817

Air Canada

Aug 5

STL7:20 amLambert-St Louis

18h 55m

2 stops

FCO9:15 amRome Fiumicino

Aug 19

FCO2:20 pmRome Fiumicino

35h 22m

1 stop

STL6:42 pmLambert-St Louis

$822

Air Canada

Aug 5

STL12:10 pmLambert-St Louis

16h 35m

2 stops

FCO11:45 amRome Fiumicino

Aug 19

FCO11:30 amRome Fiumicino

14h 12m

1 stop

STL6:42 pmLambert-St Louis

$825

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

9:31 am-9:10 am

1 stop16h 39m

Rome Fiumicino

Wed 8/19

1:30 pm-10:40 pm

1 stop16h 10m

$791

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 8/19

6:50 am-6:42 pm

2 stops18h 52m

$817

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

7:20 am-9:15 am

2 stops18h 55m

Rome Fiumicino

Wed 8/19

2:20 pm-6:42 pm

1 stop35h 22m

$822

Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-11:45 am

2 stops16h 35m

Rome Fiumicino

Wed 8/19

11:30 am-6:42 pm

1 stop14h 12m

$825

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

1:13 pm-10:20 am

2 stops14h 07m

Rome Fiumicino

Wed 8/19

6:50 am-6:42 pm

2 stops18h 52m

$826

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

12:10 pm-11:45 am

2 stops16h 35m

Rome Fiumicino

Wed 8/19

2:20 pm-2:02 pm

2 stops30h 42m

$834

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 7/19

7:05 pm-7:55 am

1 stop29h 50m

Rome Fiumicino

Fri 7/31

12:25 pm-2:02 pm

1 stop32h 37m

$897

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 7/22

12:10 pm-9:15 am

1 stop14h 05m

Rome Fiumicino

Wed 7/29

12:25 pm-2:02 pm

1 stop32h 37m

$908

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 7/19

6:00 am-11:45 am

2 stops22h 45m

Rome Fiumicino

Fri 7/31

12:25 pm-2:02 pm

1 stop32h 37m

$913

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 7/22

9:15 am-9:15 am

2 stops17h 00m

Rome Fiumicino

Wed 7/29

12:25 pm-11:44 pm

2 stops18h 19m

$923

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 $927 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 $754 on momondo.

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

You could potentially save up to 15% 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 10m
Direct flights	None

The fastest flight from St. Louis to Rome takes 13h 10m

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 13h 10m 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 May 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 (31% of total bookings). The next most popular airlines are Delta (16%), Air Canada (15%), and American Airlines (12%).

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 7,951 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 7,979 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,511 reviews	Search KLM flights
United Airlines	PriceFrom $543	Free Cancellation	Rating 7.4 9,692 reviews	Search United Airlines flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 8,458 reviews	Search Delta flights
Air Canada	PriceFrom $564	Free Cancellation	Rating 7.1 11,002 reviews	Search Air Canada flights
American Airlines	PriceFrom $665	Free Cancellation	Rating 7.1 11,668 reviews	Search American Airlines flights

Fiumicino

Civitavecchia

Cassino

Gaeta

Orvieto

Montepulciano

Ponza

Pienza

Chianciano Terme

Ladispoli

Sperlonga

Terracina

Tivoli

Ciampino

Santa Marinella

Grosseto

Orbetello

Saturnia

Ascoli Piceno

Anzio

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 $511

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 5/27. 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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Scandinavian Airlines flights from St. Louis to Rome

Our best Scandinavian Airlines 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

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

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

Traveling to a place near Rome?

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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