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

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.

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

American Airlines, KLM, and Air Canada are the most popular carriers operating from Lambert-St Louis to Rome

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 35% 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 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 June 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.

$278 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 $1,295 to $1,670. The lowest price recently found on this route was $725.

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.

10:16 am - 12:05 pm

STL

FCO

18h 49m

1 stop

1:10 pm - 10:41 pm

FCO

STL

16h 31m

1 stop

$725Iberia

Wed, Aug 5 - Thu, Aug 20

8:40 am - 8:30 am

STL

FCO

16h 50m

1 stop

1:15 pm - 12:40 pm

FCO

STL

30h 25m

2 stops

$770United Airlines

Sun, Nov 8 - Wed, Nov 18

3:40 pm - 12:40 pm

STL

FCO

14h 00m

1 stop

7:05 am - 1:45 pm

FCO

STL

13h 40m

1 stop

$772Lufthansa

Sun, Nov 8 - Wed, Nov 18

8:33 am - 8:55 am

STL

FCO

17h 22m

2 stops

1:15 pm - 2:30 pm

FCO

STL

32h 15m

2 stops

$773Air Canada

Sun, Nov 8 - Wed, Nov 18

1:08 pm - 10:55 am

STL

FCO

14h 47m

2 stops

1:15 pm - 12:40 pm

FCO

STL

30h 25m

2 stops

$774United Airlines

Mon, Nov 9 - Wed, Nov 18

8:33 am - 7:45 am

STL

FCO

16h 12m

1 stop

11:15 am - 12:40 pm

FCO

STL

32h 25m

2 stops

$775United Airlines

Tue, Nov 10 - Tue, Jan 12

3:15 pm - 7:45 am

STL

FCO

33h 30m

1 stop

11:15 am - 3:30 pm

FCO

STL

35h 15m

1 stop

$776United Airlines

Tue, Nov 10 - Tue, Jan 12

4:15 pm - 8:55 am

STL

FCO

57h 40m

2 stops

1:15 pm - 11:09 pm

FCO

STL

40h 54m

2 stops

$777Air Canada

Mon, Nov 9 - Wed, Nov 18

12:10 pm - 1:50 pm

STL

CIA

18h 40m

3 stops

6:00 am - 8:00 pm

CIA

STL

21h 00m

2 stops

$1,127Multiple Airlines

Thu, Oct 1 - Wed, Oct 7

8:55 am - 9:50 pm

STL

CIA

29h 55m

3 stops

6:00 am - 2:02 pm

CIA

STL

39h 02m

3 stops

$1,259Multiple Airlines

Tue, Jul 21 - Tue, Jul 28

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Air Canada flights from St. Louis to Rome

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

Air Canada

Nov 8

STL8:33 amLambert-St Louis

17h 22m

2 stops

FCO8:55 amRome Fiumicino

Nov 18

FCO1:15 pmRome Fiumicino

32h 15m

2 stops

STL2:30 pmLambert-St Louis

$773

Air Canada

Nov 9

STL4:15 pmLambert-St Louis

57h 40m

2 stops

FCO8:55 amRome Fiumicino

Nov 18

FCO1:15 pmRome Fiumicino

40h 54m

2 stops

STL11:09 pmLambert-St Louis

$777

Air Canada

Oct 12

STL2:40 pmLambert-St Louis

35h 35m

2 stops

FCO9:15 amRome Fiumicino

Oct 23

FCO11:30 amRome Fiumicino

35h 13m

2 stops

STL3:43 pmLambert-St Louis

$779

British Airways flights from St. Louis to Rome

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

British Airways

Oct 14

STL9:35 pmLambert-St Louis

18h 20m

1 stop

FCO10:55 pmRome Fiumicino

Oct 24

FCO2:10 pmRome Fiumicino

16h 31m

1 stop

STL11:41 pmLambert-St Louis

$840

British Airways

Jul 1

STL6:13 pmLambert-St Louis

18h 07m

2 stops

FCO7:20 pmRome Fiumicino

Jul 7

FCO9:05 pmRome Fiumicino

29h 21m

2 stops

STL7:26 pmLambert-St Louis

$10,152

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 8/5

10:16 am-12:05 pm

1 stop18h 49m

Rome Fiumicino

Thu 8/20

1:10 pm-10:41 pm

1 stop16h 31m

$725

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

8:40 am-8:30 am

1 stop16h 50m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$770

Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$772

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

8:33 am-8:55 am

2 stops17h 22m

Rome Fiumicino

Wed 11/18

1:15 pm-2:30 pm

2 stops32h 15m

$773

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 11/9

1:08 pm-10:55 am

2 stops14h 47m

Rome Fiumicino

Wed 11/18

1:15 pm-12:40 pm

2 stops30h 25m

$774

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/10

8:33 am-7:45 am

1 stop16h 12m

Rome Fiumicino

Tue 1/12

11:15 am-12:40 pm

2 stops32h 25m

$775

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 11/10

3:15 pm-7:45 am

1 stop33h 30m

Rome Fiumicino

Tue 1/12

11:15 am-3:30 pm

1 stop35h 15m

$776

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mon 11/9

4:15 pm-8:55 am

2 stops57h 40m

Rome Fiumicino

Wed 11/18

1:15 pm-11:09 pm

2 stops40h 54m

$777

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Thu 10/1

12:10 pm-1:50 pm

3 stops18h 40m

Rome Ciampino

Wed 10/7

6:00 am-8:00 pm

2 stops21h 00m

$1,127

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Tue 7/21

8:55 am-9:50 pm

3 stops29h 55m

Rome Ciampino

Tue 7/28

6:00 am-2:02 pm

3 stops39h 02m

$1,259

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 $956 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 3% 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 55m
Direct flights	None

The fastest flight from St. Louis to Rome takes 12h 55m

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 12h 55m 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 June 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 (13%).

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 8,064 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,088 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,530 reviews	Search KLM flights
United Airlines	PriceFrom $549	Free Cancellation	Rating 7.4 9,875 reviews	Search United Airlines flights
Air Canada	PriceFrom $564	Free Cancellation	Rating 7.1 11,244 reviews	Search Air Canada flights
Delta	PriceFrom $566	Free Cancellation	Rating 7.8 8,424 reviews	Search Delta flights
American Airlines	PriceFrom $665	Free Cancellation	Rating 7.1 11,745 reviews	Search American Airlines flights

Fiumicino

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Cassino

Gaeta

Orvieto

Ponza

Montepulciano

Chianciano Terme

Ladispoli

Pienza

Tivoli

Sperlonga

Terracina

Saturnia

Ciampino

Santa Marinella

Anzio

Orbetello

Grosseto

Ascoli Piceno

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 $278

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 8/4. 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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Air Canada flights from St. Louis to Rome

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

British Airways flights from St. Louis to Rome

Our best British Airways 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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