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.

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.

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: 64% 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?

British Airways and United Airlines 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 October 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.

$330 Cheap Flights from St. Louis to Rome in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Rome

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:18 pm - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

11h 27m1 stop Chicago O'Hare Intl

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

40h 44m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$656United Airlines

Wed, Dec 9 - Wed, Dec 16

9:59 am - 7:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 56m1 stop Newark

11:15 am - 3:43 pmFCO Rome Fiumicino-STL Lambert-St Louis

35h 28m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$661United Airlines

Wed, Nov 18 - Thu, Nov 26

4:05 pm - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

11h 50m1 stop Toronto Pearson Intl

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

35h 11m1 stop Toronto Pearson Intl

$662Multiple Airlines

Tue, Dec 8 - Tue, Dec 15

4:05 pm - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

11h 50m1 stop Toronto Pearson Intl

11:15 am - 7:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

39h 11m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$665Air Canada

Tue, Dec 8 - Tue, Dec 15

6:30 am - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

21h 25m2 stops Chicago O'Hare Intl Toronto Pearson Intl

11:15 am - 10:30 amFCO Rome Fiumicino-STL Lambert-St Louis

30h 15m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$669Air Canada

Tue, Dec 8 - Tue, Dec 15

2:31 pm - 11:20 amSTL Lambert-St Louis-FCO Rome Fiumicino

13h 49m1 stop Atlanta Hartsfield-Jackson

10:00 am - 8:29 pmFCO Rome Fiumicino-STL Lambert-St Louis

17h 29m1 stop Detroit Metropolitan Wayne County

$676Multiple Airlines

Mon, Nov 9 - Wed, Nov 18

1:20 pm - 4:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

20h 35m2 stops Chicago O'Hare Intl London Heathrow

11:00 am - 8:26 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 26m1 stop Philadelphia

$683British Airways

Mon, Nov 9 - Wed, Nov 18

6:00 am - 2:55 pmSTL Lambert-St Louis-FCO Rome Fiumicino

25h 55m2 stops Chicago O'Hare Intl London Heathrow

1:10 pm - 9:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

15h 49m1 stop Dallas/Fort Worth

$683British Airways

Mon, Nov 9 - Wed, Nov 18

7:03 am - 8:15 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 12m1 stop Atlanta Hartsfield-Jackson

10:25 am - 9:38 pmFCO Rome Fiumicino-STL Lambert-St Louis

18h 13m1 stop Atlanta Hartsfield-Jackson

$686Delta

Wed, Dec 9 - Wed, Dec 16

6:40 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 05m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

10:25 am - 6:13 pmFCO Rome Fiumicino-STL Lambert-St Louis

14h 48m1 stop Atlanta Hartsfield-Jackson

$690Delta

Mon, Nov 9 - Wed, Nov 18

Cheap last minute flights

Enter your travel dates to find the best prices.

4:05 pm - 2:00 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 55m2 stops Toronto Pearson Intl Zurich

11:15 am - 7:23 pmFCO Rome Fiumicino-STL Lambert-St Louis

39h 08m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$875Air Canada

Thu, Nov 5 - Mon, Nov 9

9:40 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

15h 05m1 stop Chicago O'Hare Intl

11:15 am - 3:43 pmFCO Rome Fiumicino-STL Lambert-St Louis

35h 28m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$875United Airlines

Thu, Nov 5 - Mon, Nov 9

6:50 pm - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

29h 55m1 stop Chicago O'Hare Intl

11:15 am - 3:23 pmFCO Rome Fiumicino-STL Lambert-St Louis

35h 08m1 stop Toronto Pearson Intl

$876Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

4:05 pm - 2:00 pmSTL Lambert-St Louis-FCO Rome Fiumicino

14h 55m2 stops Toronto Pearson Intl Zurich

11:15 am - 3:23 pmFCO Rome Fiumicino-STL Lambert-St Louis

35h 08m1 stop Toronto Pearson Intl

$877Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

1:08 pm - 7:15 pmSTL Lambert-St Louis-FCO Rome Fiumicino

23h 07m2 stops Chicago O'Hare Intl Vienna Intl

8:05 pm - 9:52 pmFCO Rome Fiumicino-STL Lambert-St Louis

32h 47m2 stops Vienna Intl Newark

$970Austrian Airlines

Mon, Nov 2 - Mon, Nov 9

12:58 pm - 10:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 47m1 stop Dallas/Fort Worth

6:40 pm - 8:19 pmFCO Rome Fiumicino-STL Lambert-St Louis

32h 39m2 stops Helsinki-Vantaa Dallas/Fort Worth

$986Finnair

Mon, Nov 2 - Mon, Nov 9

9:59 am - 7:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

14h 56m1 stop Newark

9:45 am - 9:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

18h 55m1 stop Chicago O'Hare Intl

$1,019United Airlines

Mon, Nov 2 - Mon, Nov 9

5:29 pm - 7:25 pmSTL Lambert-St Louis-FCO Rome Fiumicino

18h 56m2 stops Chicago O'Hare Intl London Heathrow

10:40 am - 10:39 pmFCO Rome Fiumicino-STL Lambert-St Louis

18h 59m2 stops London Heathrow Charlotte Douglas

$2,673British Airways

Wed, Nov 4 - Sat, Nov 7

11:29 am - 7:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

13h 26m1 stop Newark

9:45 am - 9:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

18h 55m1 stop Chicago O'Hare Intl

$3,161Lufthansa

Wed, Nov 4 - Sat, Nov 7

8:30 am - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 15m1 stop Chicago O'Hare Intl

12:40 pm - 9:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

16h 00m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$8,925Lufthansa

Wed, Nov 4 - Sat, Nov 7

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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

Dec 9

STL1:18 pmLambert-St Louis

11h 27m

1 stop

FCO7:45 amRome Fiumicino

Dec 16

FCO1:15 pmRome Fiumicino

40h 44m

2 stops

STL10:59 pmLambert-St Louis

$656

United Airlines

Nov 10

STL10:53 amLambert-St Louis

13h 52m

1 stop

FCO7:45 amRome Fiumicino

Jan 12

FCO11:15 amRome Fiumicino

34h 13m

2 stops

STL2:28 pmLambert-St Louis

$661

United Airlines

Nov 10

STL5:34 pmLambert-St Louis

31h 11m

1 stop

FCO7:45 amRome Fiumicino

Jan 12

FCO11:15 amRome Fiumicino

35h 11m

1 stop

STL3:26 pmLambert-St Louis

$662

Air Canada flights from St. Louis to Rome

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

Air Canada

Dec 8

STL4:05 pmLambert-St Louis

11h 50m

1 stop

FCO10:55 amRome Fiumicino

Dec 15

FCO11:15 amRome Fiumicino

39h 11m

2 stops

STL7:26 pmLambert-St Louis

$665

Air Canada

Nov 10

STL9:40 amLambert-St Louis

18h 15m

2 stops

FCO10:55 amRome Fiumicino

Jan 12

FCO11:15 amRome Fiumicino

37h 35m

2 stops

STL5:50 pmLambert-St Louis

$669

Air Canada

Nov 10

STL4:05 pmLambert-St Louis

11h 50m

1 stop

FCO10:55 amRome Fiumicino

Jan 12

FCO11:15 amRome Fiumicino

37h 35m

2 stops

STL5:50 pmLambert-St Louis

$674

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/9

1:18 pm-7:45 am

1 stop11h 27m

Rome Fiumicino

Wed 12/16

1:15 pm-10:59 pm

2 stops40h 44m

$656

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 11/18

9:59 am-7:55 am

1 stop14h 56m

Rome Fiumicino

Thu 11/26

11:15 am-3:43 pm

2 stops35h 28m

$661

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 12/8

4:05 pm-10:55 am

1 stop11h 50m

Rome Fiumicino

Tue 12/15

11:15 am-3:26 pm

1 stop35h 11m

$662

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 12/8

4:05 pm-10:55 am

1 stop11h 50m

Rome Fiumicino

Tue 12/15

11:15 am-7:26 pm

2 stops39h 11m

$665

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 12/8

6:30 am-10:55 am

2 stops21h 25m

Rome Fiumicino

Tue 12/15

11:15 am-10:30 am

2 stops30h 15m

$669

Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

2:31 pm-11:20 am

1 stop13h 49m

Rome Fiumicino

Wed 11/18

10:00 am-8:29 pm

1 stop17h 29m

$676

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

1:20 pm-4:55 pm

2 stops20h 35m

Rome Fiumicino

Wed 11/18

11:00 am-8:26 pm

1 stop16h 26m

$683

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

6:00 am-2:55 pm

2 stops25h 55m

Rome Fiumicino

Wed 11/18

1:10 pm-9:59 pm

1 stop15h 49m

$683

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 12/9

7:03 am-8:15 am

1 stop18h 12m

Rome Fiumicino

Wed 12/16

10:25 am-9:38 pm

1 stop18h 13m

$686

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

6:40 am-7:45 am

2 stops18h 05m

Rome Fiumicino

Wed 11/18

10:25 am-6:13 pm

1 stop14h 48m

$690

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 $706 to $1,213.
The lowest price recently found on this route was $656.

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 $697.

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 $998 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 27% 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

Best Price Found	$330
Fastest flight time	14h 56m
Direct flights	None

The best one-way flight to Rome from St. Louis in the past 72 hours is $330. The best round-trip flight deal from St. Louis to Rome found on momondo in the last 72 hours is $656.

The fastest flight from St. Louis to Rome takes 14h 56m

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 14h 56m 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 October 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 British Airways (19%), Air Canada (15%), and Delta (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 8,277 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,300 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,595 reviews	Search KLM flights
Delta	PriceFrom $596	Free Cancellation	Rating 7.8 8,695 reviews	Search Delta flights
Air Canada	PriceFrom $810	Free Cancellation	Rating 7.1 11,833 reviews	Search Air Canada flights
United Airlines	PriceFrom $851	Free Cancellation	Rating 7.3 10,453 reviews	Search United Airlines flights
American Airlines	PriceFrom $867	Free Cancellation	Rating 7.0 12,212 reviews	Search American Airlines flights

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Ciampino

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Pienza

Tivoli

Cassino

Montepulciano

Orbetello

Ponza

Anzio

Chianciano Terme

Saturnia

Foligno

Terracina

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 $330

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 3/7. 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?

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

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

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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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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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