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

Prices for flights from Rome Fiumicino Airport to Lambert-St Louis Airport are updated daily.

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

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 Rome Fiumicino Airport to Lambert-St Louis Airport.

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

The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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Find the cheapest flights from Rome Fiumicino Airport to St. Louis

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One-way

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Cheap round-trip flights

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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 Fiumicino Airport to St. Louis

Our best KLM deals on Rome Fiumicino Airport 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 Fiumicino Airport to St. Louis

Our best Delta deals on Rome Fiumicino Airport 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

momondo Fare Finder

Use the filters below to find and compare flights from Rome Fiumicino Airport to St. Louis that are best for you.

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 Fiumicino Airport 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

What is the cheapest month to fly to St. Louis?

In general, April is the cheapest month to fly from Rome Fiumicino Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $793. The month of February is another great option to travel to St. Louis, with average flight prices from Rome Fiumicino Airport averaging around $810.

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 Fiumicino Airport 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 Fiumicino Airport to St. Louis flights?

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

When to book flights from Rome Fiumicino Airport to St. Louis

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

Estimated round-trip price

Cheap Rome Fiumicino Airport to St. Louis (FCO to STL) flight deals and tips

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

Fastest flight time	13h 40m
Direct flights	None

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

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

Search flight deals

How far is Rome Fiumicino to Lambert-St Louis by plane?
The straight-line distance from Rome Fiumicino to Lambert-St Louis is 5048.2 mi. Flights usually cover this in 13h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Rome Fiumicino Airport to Lambert-St Louis Airport?
Prices for flights from Rome Fiumicino Airport to Lambert-St Louis Airport are updated daily.
How old do you have to be to fly from Rome Fiumicino Airport to Lambert-St Louis Airport?
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 Rome Fiumicino Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Rome.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Rome with this policy.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Rome. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Rome to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.