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

Flights connecting via Charlotte (CLT) have the shortest average one-way travel time: 11h 55m.

What airlines fly to Rome?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Rome from St. Louis according to our data. United Airlines is the first choice among our users, with 34% 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.

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

American Airlines 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?

Charlotte (CLT) has the shortest average layover time for this route: 2h 12m.

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

Montreal (YUL) was the most common stop: 58% 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 Charlotte (CLT) offer the lowest average round-trip price of $825.

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 August 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.

$351 Cheap Flights from St. Louis to Rome in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Rome

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 12:40 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 00m1 stop Frankfurt am Main

11:15 am - 3:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

35h 11m1 stop Toronto Pearson Intl

$756Multiple Airlines

Sun, Dec 6 - Tue, Dec 8

7:33 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 22m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

7:05 am - 1:45 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 40m1 stop Frankfurt am Main

$764Multiple Airlines

Wed, Feb 10 - Wed, Feb 17

8:33 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 12m1 stop Chicago O'Hare Intl

1:15 pm - 4:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

34h 25m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$770United Airlines

Wed, Dec 2 - Wed, Dec 9

11:29 am - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 26m1 stop Newark

1:15 pm - 10:32 amFCO Rome Fiumicino-STL Lambert-St Louis

28h 17m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$770United Airlines

Tue, Nov 17 - Fri, Nov 20

8:05 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 50m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 10:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

40h 44m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$773Air Canada

Wed, Dec 2 - Wed, Dec 9

3:40 pm - 12:40 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 00m1 stop Frankfurt am Main

7:05 am - 1:45 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 40m1 stop Frankfurt am Main

$775Lufthansa

Wed, Feb 10 - Wed, Feb 17

8:33 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

41h 22m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 11:09 pmFCO Rome Fiumicino-STL Lambert-St Louis

40h 54m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$778Air Canada

Sat, Feb 13 - Fri, Feb 19

6:40 am - 9:35 amSTL Lambert-St Louis-FCO Rome Fiumicino

19h 55m1 stop Detroit Metropolitan Wayne County

10:25 am - 10:56 pmFCO Rome Fiumicino-STL Lambert-St Louis

19h 31m1 stop Atlanta Hartsfield-Jackson

$790Delta

Wed, Nov 18 - Thu, Nov 26

10:00 am - 11:20 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 20m1 stop Atlanta Hartsfield-Jackson

12:25 pm - 11:23 pmFCO Rome Fiumicino-STL Lambert-St Louis

17h 58m1 stop Minneapolis St Paul

$790Delta

Wed, Dec 2 - Wed, Dec 9

1:08 pm - 6:00 pmSTL Lambert-St Louis-FCO Rome Fiumicino

21h 52m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:50 pm - 9:13 pmFCO Rome Fiumicino-STL Lambert-St Louis

33h 23m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$795Lufthansa

Mon, Feb 1 - Mon, Feb 8

Cheap last minute flights

Enter your travel dates to find the best prices.

3:30 pm - 12:30 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 00m1 stop Frankfurt am Main

6:50 am - 1:25 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 35m1 stop Frankfurt am Main

$954Lufthansa

Wed, Aug 26 - Sun, Aug 30

3:30 pm - 12:30 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 00m1 stop Frankfurt am Main

6:50 am - 1:25 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 35m1 stop Frankfurt am Main

$957Lufthansa

Wed, Aug 26 - Wed, Sep 2

1:00 pm - 12:30 pmSTL Lambert-St Louis-FCO Rome Fiumicino

16h 30m2 stops Washington, D.C. Dulles Intl Frankfurt am Main

6:50 am - 1:25 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 35m1 stop Frankfurt am Main

$958Lufthansa

Wed, Aug 26 - Sun, Aug 30

1:00 pm - 5:10 pmSTL Lambert-St Louis-FCO Rome Fiumicino

21h 10m2 stops Washington, D.C. Dulles Intl Brussels Bruxelles-National

10:50 am - 6:42 pmFCO Rome Fiumicino-STL Lambert-St Louis

38h 52m2 stops Munich Franz Josef Strauss Montreal Pierre Elliott Trudeau Intl

$971Multiple Airlines

Wed, Aug 26 - Sun, Aug 30

12:10 pm - 9:15 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 05m1 stop Montreal Pierre Elliott Trudeau Intl

11:30 am - 10:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

42h 29m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$981Air Canada

Wed, Aug 26 - Wed, Sep 2

12:59 pm - 7:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

11h 56m1 stop Chicago O'Hare Intl

2:20 pm - 3:38 pmFCO Rome Fiumicino-STL Lambert-St Louis

32h 18m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$982United Airlines

Wed, Aug 26 - Wed, Sep 2

7:00 am - 7:35 amSTL Lambert-St Louis-FCO Rome Fiumicino

17h 35m1 stop Newark

2:20 pm - 3:38 pmFCO Rome Fiumicino-STL Lambert-St Louis

32h 18m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$982United Airlines

Wed, Aug 26 - Wed, Sep 2

6:00 am - 9:15 amSTL Lambert-St Louis-FCO Rome Fiumicino

20h 15m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

2:20 pm - 10:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

39h 39m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$985Air Canada

Wed, Aug 26 - Wed, Sep 2

11:25 am - 7:25 amSTL Lambert-St Louis-FCO Rome Fiumicino

13h 00m1 stop Chicago O'Hare Intl

10:35 am - 10:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

19h 05m1 stop Miami

$1,324ITA Airways

Sat, Aug 22 - Mon, Aug 24

1:25 pm - 2:20 pmSTL Lambert-St Louis-FCO Rome Fiumicino

17h 55m2 stops Chicago O'Hare Intl London Heathrow

7:15 am - 8:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

20h 11m2 stops London Heathrow Dallas/Fort Worth

$10,860British Airways

Sat, Aug 22 - Sat, Aug 29

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United Airlines flights from St. Louis to Rome

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

United Airlines

Nov 17

STL11:29 amLambert-St Louis

16h 26m

1 stop

FCO10:55 amRome Fiumicino

Nov 20

FCO1:15 pmRome Fiumicino

28h 17m

2 stops

STL10:32 amLambert-St Louis

$770

United Airlines

Dec 6

STL1:00 pmLambert-St Louis

12h 30m

1 stop

FCO8:30 amRome Fiumicino

Dec 8

FCO11:15 amRome Fiumicino

35h 26m

2 stops

STL3:41 pmLambert-St Louis

$775

United Airlines

Nov 17

STL1:40 pmLambert-St Louis

15h 15m

1 stop

FCO11:55 amRome Fiumicino

Nov 20

FCO7:05 amRome Fiumicino

13h 40m

1 stop

STL1:45 pmLambert-St Louis

$778

Air Canada flights from St. Louis to Rome

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

Air Canada

Feb 13

STL8:33 amLambert-St Louis

41h 22m

2 stops

FCO8:55 amRome Fiumicino

Feb 19

FCO1:15 pmRome Fiumicino

40h 54m

2 stops

STL11:09 pmLambert-St Louis

$779

Air Canada

Nov 8

STL7:30 amLambert-St Louis

18h 25m

2 stops

FCO8:55 amRome Fiumicino

Nov 18

FCO1:15 pmRome Fiumicino

33h 28m

2 stops

STL3:43 pmLambert-St Louis

$807

Air Canada

Nov 8

STL7:30 amLambert-St Louis

18h 25m

2 stops

FCO8:55 amRome Fiumicino

Nov 18

FCO1:15 pmRome Fiumicino

33h 28m

2 stops

STL3:43 pmLambert-St Louis

$808

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 12/6

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Tue 12/8

11:15 am-3:26 pm

1 stop35h 11m

$756

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 2/10

7:33 am-8:55 am

2 stops18h 22m

Rome Fiumicino

Wed 2/17

7:05 am-1:45 pm

1 stop13h 40m

$764

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/2

8:33 am-7:45 am

1 stop16h 12m

Rome Fiumicino

Wed 12/9

1:15 pm-4:40 pm

2 stops34h 25m

$770

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 11/17

11:29 am-10:55 am

1 stop16h 26m

Rome Fiumicino

Fri 11/20

1:15 pm-10:32 am

2 stops28h 17m

$770

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/2

8:05 am-8:55 am

2 stops17h 50m

Rome Fiumicino

Wed 12/9

1:15 pm-10:59 pm

2 stops40h 44m

$773

Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 2/10

3:40 pm-12:40 pm

1 stop14h 00m

Rome Fiumicino

Wed 2/17

7:05 am-1:45 pm

1 stop13h 40m

$775

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sat 2/13

8:33 am-8:55 am

2 stops41h 22m

Rome Fiumicino

Fri 2/19

1:15 pm-11:09 pm

2 stops40h 54m

$778

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 11/18

6:40 am-9:35 am

1 stop19h 55m

Rome Fiumicino

Thu 11/26

10:25 am-10:56 pm

1 stop19h 31m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/2

10:00 am-11:20 am

1 stop18h 20m

Rome Fiumicino

Wed 12/9

12:25 pm-11:23 pm

1 stop17h 58m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 2/1

1:08 pm-6:00 pm

2 stops21h 52m

Rome Fiumicino

Mon 2/8

6:50 pm-9:13 pm

2 stops33h 23m

$795

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?

Prices are currently low for flights on this route.

Typical prices usually range from $896 to $1,294.
The lowest price recently found on this route was $756.

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 $527, 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 $674.

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 $1,004 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.

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

Best Price Found	$351
Fastest flight time	11h 50m
Direct flights	None

The best one-way flight to Rome from St. Louis in the past 72 hours is $351. The best round-trip flight deal from St. Louis to Rome found on momondo in the last 72 hours is $756.

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 August 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 (32% of total bookings). The next most popular airlines are Air Canada (17%), British Airways (17%), and Delta (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 8,184 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,206 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,562 reviews	Search KLM flights
United Airlines	PriceFrom $618	Free Cancellation	Rating 7.4 10,112 reviews	Search United Airlines flights
Delta	PriceFrom $665	Free Cancellation	Rating 7.8 8,518 reviews	Search Delta flights
Air Canada	PriceFrom $810	Free Cancellation	Rating 7.1 11,516 reviews	Search Air Canada flights
American Airlines	PriceFrom $825	Free Cancellation	Rating 7.1 11,989 reviews	Search American Airlines flights

Fiumicino

Civitavecchia

Gaeta

Orvieto

Montepulciano

Ladispoli

Pienza

Tivoli

Sperlonga

Chianciano Terme

Orbetello

Ponza

Ciampino

Porto Ercole

Terracina

Cassino

Saturnia

Ascoli Piceno

Foligno

Santa Marinella

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 $351

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 11/17. 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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United Airlines flights from St. Louis to Rome

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

Air Canada flights from St. Louis to Rome

Our best Air Canada 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?

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

Best Price Found

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?

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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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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.

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

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