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

Iberia, British Airways, and Delta are the most popular carriers operating from Lambert-St Louis to Rome

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 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.

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 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.

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 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.

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.

$329 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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4:05 pm - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

33h 50m1 stop Toronto Pearson Intl

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

13h 40m1 stop Frankfurt am Main

$715Multiple Airlines

Sun, Nov 15 - Wed, Nov 25

4:05 pm - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

33h 50m1 stop Toronto Pearson Intl

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

13h 40m1 stop Frankfurt am Main

$716Multiple Airlines

Sun, Nov 15 - Wed, Nov 25

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

16h 15m1 stop Chicago O'Hare Intl

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

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

$726United Airlines

Sun, Nov 15 - Wed, Nov 25

1:08 pm - 7:45 amSTL Lambert-St Louis-FCO Rome Fiumicino

11h 37m1 stop Chicago O'Hare Intl

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

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

$726United Airlines

Mon, Nov 9 - Wed, Nov 25

7:04 pm - 6:00 pmSTL Lambert-St Louis-FCO Rome Fiumicino

16h 56m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

7:05 am - 2:45 pmFCO Rome Fiumicino-STL Lambert-St Louis

13h 40m1 stop Frankfurt am Main

$728Lufthansa

Mon, Mar 15 - Wed, Mar 24

7:30 am - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 25m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 9:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

39h 25m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$730Air Canada

Sun, Nov 8 - Wed, Nov 18

4:05 pm - 8:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

33h 50m1 stop Toronto Pearson Intl

1:15 pm - 9:40 pmFCO Rome Fiumicino-STL Lambert-St Louis

39h 25m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$730Air Canada

Sun, Nov 8 - Wed, Nov 18

6:50 pm - 6:00 pmSTL Lambert-St Louis-FCO Rome Fiumicino

16h 10m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

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

13h 40m1 stop Frankfurt am Main

$734Lufthansa

Mon, Nov 9 - Wed, Nov 18

1:06 pm - 12:20 pmSTL Lambert-St Louis-FCO Rome Fiumicino

17h 14m2 stops Chicago O'Hare Intl London Heathrow

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

16h 26m1 stop Philadelphia

$743British Airways

Tue, Oct 27 - Thu, Nov 12

9:50 am - 11:10 amSTL Lambert-St Louis-FCO Rome Fiumicino

18h 20m2 stops Boston Logan Intl London Heathrow

8:35 pm - 6:53 pmFCO Rome Fiumicino-STL Lambert-St Louis

29h 18m2 stops London Heathrow Chicago O'Hare Intl

$786British Airways

Wed, Nov 18 - Wed, Dec 2

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

6:35 pm - 1:25 pmFCO Rome Fiumicino-STL Lambert-St Louis

25h 50m1 stop Frankfurt am Main

$978Lufthansa

Tue, Oct 6 - Thu, Oct 15

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

$1,022Lufthansa

Mon, Oct 5 - Tue, Oct 20

8:00 am - 6:30 pmSTL Lambert-St Louis-FCO Rome Fiumicino

27h 30m2 stops Chicago O'Hare Intl Istanbul

7:05 am - 9:21 pmFCO Rome Fiumicino-STL Lambert-St Louis

21h 16m2 stops Istanbul Chicago O'Hare Intl

$1,025Turkish Airlines

Mon, Oct 5 - Tue, Oct 20

8:00 am - 6:30 pmSTL Lambert-St Louis-FCO Rome Fiumicino

27h 30m2 stops Chicago O'Hare Intl Istanbul

8:05 pm - 9:21 pmFCO Rome Fiumicino-STL Lambert-St Louis

32h 16m2 stops Istanbul Chicago O'Hare Intl

$1,070Turkish Airlines

Tue, Oct 6 - Thu, Oct 15

4:50 pm - 10:55 amSTL Lambert-St Louis-FCO Rome Fiumicino

35h 05m1 stop Newark

12:25 pm - 2:00 pmFCO Rome Fiumicino-STL Lambert-St Louis

32h 35m1 stop Toronto Pearson Intl

$1,071United Airlines

Tue, Oct 6 - Thu, Oct 15

9:30 am - 9:15 amSTL Lambert-St Louis-FCO Rome Fiumicino

16h 45m2 stops Newark Montreal Pierre Elliott Trudeau Intl

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

13h 35m1 stop Frankfurt am Main

$1,071United Airlines

Mon, Oct 5 - Tue, Oct 20

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

14h 05m1 stop Montreal Pierre Elliott Trudeau Intl

6:50 am - 6:41 pmFCO Rome Fiumicino-STL Lambert-St Louis

18h 51m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$1,074Air Canada

Mon, Oct 5 - Tue, Oct 20

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

14h 05m1 stop Montreal Pierre Elliott Trudeau Intl

8:00 am - 6:41 pmFCO Rome Fiumicino-STL Lambert-St Louis

41h 41m2 stops Munich Franz Josef Strauss Montreal Pierre Elliott Trudeau Intl

$1,075Air Canada

Tue, Oct 6 - Thu, Oct 15

9:35 pm - 8:05 pmSTL Lambert-St Louis-FCO Rome Fiumicino

15h 30m1 stop London Heathrow

2:10 pm - 10:14 pmFCO Rome Fiumicino-STL Lambert-St Louis

15h 04m1 stop Philadelphia

$1,076British Airways

Tue, Oct 6 - Thu, Oct 15

12:50 pm - 11:20 amSTL Lambert-St Louis-FCO Rome Fiumicino

15h 30m1 stop Charlotte Douglas

1:30 pm - 11:59 pmFCO Rome Fiumicino-STL Lambert-St Louis

17h 29m1 stop Charlotte Douglas

$6,281British Airways

Sun, Oct 4 - Mon, Oct 5

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American Airlines flights from St. Louis to Rome

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

American Airlines

Nov 23

STL4:25 pmLambert-St Louis

15h 30m

2 stops

FCO2:55 pmRome Fiumicino

Dec 9

FCO7:30 amRome Fiumicino

18h 23m

2 stops

STL6:53 pmLambert-St Louis

$769

American Airlines

Oct 13

STL9:35 pmLambert-St Louis

18h 00m

1 stop

FCO10:35 pmRome Fiumicino

Oct 28

FCO7:30 amRome Fiumicino

19h 27m

2 stops

STL8:57 pmLambert-St Louis

$1,113

Delta flights from St. Louis to Rome

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

Delta

Nov 18

STL6:40 amLambert-St Louis

19h 55m

1 stop

FCO9:35 amRome Fiumicino

Nov 26

FCO10:25 amRome Fiumicino

19h 28m

1 stop

STL10:53 pmLambert-St Louis

$747

Delta

Nov 9

STL10:20 amLambert-St Louis

18h 10m

2 stops

FCO11:30 amRome Fiumicino

Nov 18

FCO6:10 amRome Fiumicino

17h 21m

2 stops

STL4:31 pmLambert-St Louis

$750

Delta

Nov 18

STL6:00 amLambert-St Louis

18h 45m

2 stops

FCO7:45 amRome Fiumicino

Nov 27

FCO12:30 pmRome Fiumicino

14h 01m

1 stop

STL7:31 pmLambert-St Louis

$751

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 11/15

4:05 pm-8:55 am

1 stop33h 50m

Rome Fiumicino

Wed 11/25

7:05 am-1:45 pm

1 stop13h 40m

$715

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

4:05 pm-8:55 am

1 stop33h 50m

Rome Fiumicino

Wed 11/25

7:05 am-1:45 pm

1 stop13h 40m

$716

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

8:30 am-7:45 am

1 stop16h 15m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$726

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

1:08 pm-7:45 am

1 stop11h 37m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$726

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 3/15

7:04 pm-6:00 pm

2 stops16h 56m

Rome Fiumicino

Wed 3/24

7:05 am-2:45 pm

1 stop13h 40m

$728

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

7:30 am-8:55 am

2 stops18h 25m

Rome Fiumicino

Wed 11/18

1:15 pm-9:40 pm

2 stops39h 25m

$730

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/8

4:05 pm-8:55 am

1 stop33h 50m

Rome Fiumicino

Wed 11/18

1:15 pm-9:40 pm

2 stops39h 25m

$730

Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

6:50 pm-6:00 pm

2 stops16h 10m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$734

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 10/27

1:06 pm-12:20 pm

2 stops17h 14m

Rome Fiumicino

Thu 11/12

11:00 am-8:26 pm

1 stop16h 26m

$743

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Wed 11/18

9:50 am-11:10 am

2 stops18h 20m

Rome Fiumicino

Wed 12/2

8:35 pm-6:53 pm

2 stops29h 18m

$786

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 $1,038 to $1,304.
The lowest price recently found on this route was $715.

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 $1,002 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 21% 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	$329
Fastest flight time	11h 50m
Direct flights	None

The best one-way flight to Rome from St. Louis in the past 72 hours is $329. The best round-trip flight deal from St. Louis to Rome found on momondo in the last 72 hours is $715.

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.

Search flight deals

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 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 (32% of total bookings). The next most popular airlines are British Airways (19%), Air Canada (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 8,243 reviews	Search British Airways flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,253 reviews	Search Lufthansa flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,576 reviews	Search KLM flights
Delta	PriceFrom $596	Free Cancellation	Rating 7.8 8,627 reviews	Search Delta flights
Air Canada	PriceFrom $810	Free Cancellation	Rating 7.1 11,712 reviews	Search Air Canada flights
American Airlines	PriceFrom $867	Free Cancellation	Rating 7.0 12,129 reviews	Search American Airlines flights
United Airlines	PriceFrom $894	Free Cancellation	Rating 7.4 10,282 reviews	Search United Airlines flights

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Gaeta

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Montepulciano

Tivoli

Pienza

Cassino

Ponza

Chianciano Terme

Orbetello

Sperlonga

Porto Ercole

Anzio

Ciampino

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 $329

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 2/7. 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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American Airlines flights from St. Louis to Rome

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

Delta flights from St. Louis to Rome

Our best Delta 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

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

Fly your favorite airline to Rome

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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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