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

Toronto (YYZ) has the shortest average layover time for this route: 2h 00m.

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

Philadelphia (PHL) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Rome to St. Louis?

Flights via Toronto (YYZ) offer the lowest average round-trip price of $832.

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

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 14h 13m.

When did momondo last update prices for flights from Rome to Lambert-St Louis Airport?

Prices for flights from Rome to Lambert-St Louis Airport were last updated today.

How old do you have to be to fly from Rome to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rome to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$429 Cheap Flights from Rome to St. Louis in 2025/26

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11:05 am - 11:24 pm

FCO

STL

19h 19m1 stop

9:35 pm - 7:10 pm

STL

FCO

14h 35m1 stop

$820Multiple Airlines

Wed, Apr 8 - Fri, Oct 9

10:00 am - 10:59 pm

FCO

STL

19h 59m2 stops

3:30 pm - 2:05 pm

STL

FCO

15h 35m1 stop

$840Lufthansa

Wed, Apr 8 - Fri, Oct 9

7:05 am - 9:13 pm

FCO

STL

21h 08m2 stops

11:22 am - 7:55 am

STL

FCO

13h 33m1 stop

$850United Airlines

Fri, Jan 16 - Mon, Jan 19

7:05 am - 7:27 pm

FCO

STL

19h 22m2 stops

11:22 am - 7:55 am

STL

FCO

13h 33m1 stop

$851United Airlines

Fri, Jan 16 - Mon, Jan 19

1:20 pm - 10:59 pm

FCO

STL

16h 39m2 stops

6:40 am - 9:15 am

STL

FCO

19h 35m2 stops

$854United Airlines

Wed, Apr 8 - Fri, Oct 9

7:05 am - 1:55 pm

FCO

STL

13h 50m1 stop

11:22 am - 7:55 am

STL

FCO

13h 33m1 stop

$1,016United Airlines

Fri, Jan 16 - Mon, Jan 19

7:05 am - 1:55 pm

FCO

STL

13h 50m1 stop

11:22 am - 7:55 am

STL

FCO

13h 33m1 stop

$1,017United Airlines

Fri, Jan 16 - Mon, Jan 19

10:05 am - 8:58 am

FCO

STL

29h 53m1 stop

9:47 am - 10:30 am

STL

FCO

17h 43m1 stop

$1,199KLM

Wed, Dec 31 - Sun, Jan 4

10:05 am - 8:58 am

FCO

STL

29h 53m2 stops

6:29 am - 7:55 am

STL

FCO

18h 26m1 stop

$1,266Delta

Wed, Dec 31 - Sun, Jan 4

10:05 am - 8:58 am

FCO

STL

29h 53m2 stops

5:59 pm - 5:25 pm

STL

FCO

16h 26m2 stops

$1,360Delta

Wed, Dec 31 - Sun, Jan 4

KLM flights from Rome to St. Louis

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

KLM

Dec 31

FCO10:05 amRome Fiumicino

29h 53m

1 stop

STL8:58 amLambert-St Louis

Jan 4

STL9:47 amLambert-St Louis

17h 43m

1 stop

FCO10:30 amRome Fiumicino

$1,199

Find similar

KLM

Jan 1

FCO10:05 amRome Fiumicino

20h 33m

1 stop

STL11:38 pmLambert-St Louis

Jan 5

STL6:00 amLambert-St Louis

21h 30m

1 stop

FCO10:30 amRome Fiumicino

$1,914

Find similar

Delta flights from Rome to St. Louis

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

Delta

Dec 22

FCO10:05 amRome Fiumicino

13h 56m

1 stop

STL5:01 pmLambert-St Louis

May 31

STL9:00 amLambert-St Louis

15h 35m

1 stop

FCO7:35 amRome Fiumicino

$1,126

Find similar

Delta

Dec 22

FCO6:10 amRome Fiumicino

19h 10m

2 stops

STL6:20 pmLambert-St Louis

May 29

STL5:00 pmLambert-St Louis

16h 00m

2 stops

FCO4:00 pmRome Fiumicino

$1,174

Find similar

Delta

Dec 22

FCO10:05 amRome Fiumicino

20h 37m

2 stops

STL11:42 pmLambert-St Louis

Jun 1

STL5:00 pmLambert-St Louis

19h 05m

2 stops

FCO7:05 pmRome Fiumicino

$1,186

Find similar

Fly from

Fly to

Route

Depart

Return

Price

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/8

11:05 am-11:24 pm

1 stop19h 19m

Lambert-St Louis

Fri 10/9

9:35 pm-7:10 pm

1 stop14h 35m

$820

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/8

10:00 am-10:59 pm

2 stops19h 59m

Lambert-St Louis

Fri 10/9

3:30 pm-2:05 pm

1 stop15h 35m

$840

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 1/16

7:05 am-9:13 pm

2 stops21h 08m

Lambert-St Louis

Mon 1/19

11:22 am-7:55 am

1 stop13h 33m

$850

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 1/16

7:05 am-7:27 pm

2 stops19h 22m

Lambert-St Louis

Mon 1/19

11:22 am-7:55 am

1 stop13h 33m

$851

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 4/8

1:20 pm-10:59 pm

2 stops16h 39m

Lambert-St Louis

Fri 10/9

6:40 am-9:15 am

2 stops19h 35m

$854

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 1/16

7:05 am-1:55 pm

1 stop13h 50m

Lambert-St Louis

Mon 1/19

11:22 am-7:55 am

1 stop13h 33m

$1,016

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Fri 1/16

7:05 am-1:55 pm

1 stop13h 50m

Lambert-St Louis

Mon 1/19

11:22 am-7:55 am

1 stop13h 33m

$1,017

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 12/31

10:05 am-8:58 am

1 stop29h 53m

Lambert-St Louis

Sun 1/4

9:47 am-10:30 am

1 stop17h 43m

$1,199

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 12/31

10:05 am-8:58 am

2 stops29h 53m

Lambert-St Louis

Sun 1/4

6:29 am-7:55 am

1 stop18h 26m

$1,266

RomeSt. Louis

FCO - STL

FCOSTL

Rome Fiumicino

Wed 12/31

10:05 am-8:58 am

2 stops29h 53m

Lambert-St Louis

Sun 1/4

5:59 pm-5:25 pm

2 stops16h 26m

$1,360

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 Rome to St. Louis

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

Layovers

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $786. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $947. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Rome at noon is the least expensive time of day to depart. momondo users have found prices as low as $929 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $947 per ticket.

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

You could potentially save up to 11% on your flight if you consider stops on a Rome to St. Louis flight.

When to book flights from Rome to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Rome to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Rome to St. Louis (ROM to STL) flight deals and tips

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

Fastest flight time	13h 40m
Direct flights	None

The fastest flight from Rome to St. Louis takes 13h 40m

There are no direct flights from Rome to St. Louis. There are no popular flight routes from Rome to St. Louis.

Search flight deals

How far is Rome to Lambert-St Louis by plane?
The distance between Rome and Lambert-St Louis is about 5053.3 mi. 13h 40m is a normal flight duration for this route.
When did momondo last update prices for flights from Rome to Lambert-St Louis Airport?
Prices for flights from Rome to Lambert-St Louis Airport were last updated today.
How old do you have to be to fly from Rome to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rome to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

O'Fallon

Florissant

Fenton

Wentzville

St. Peters

Collinsville

Alton

Clayton

Festus

Glencoe

Farmington

Eureka

Edwardsville

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Rome to St. Louis?

Finding the right flight to St. Louis from Rome is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Rome to St. Louis with flexible booking policies on momondo?

All flight searches from Rome to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Rome to St. Louis?

momondo helps you find the best flight between Rome and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Rome to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Rome are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.