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Cheap flights from Rome to St. Louis from $570

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Rome to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
2:15 pm - 7:30 pmFCO  Rome Fiumicino-STL Lambert-St Louis
36h 15m1 stop Charlotte Douglas
American Airlines Logo
5:42 pm - 12:05 pmSTL  Lambert-St Louis-FCO Rome Fiumicino
35h 23m1 stop Miami
$734American Airlines
Fri, Apr 30 - Sun, May 2
American Airlines Logo
2:15 pm - 7:30 pmFCO  Rome Fiumicino-STL Lambert-St Louis
36h 15m1 stop Charlotte Douglas
American Airlines Logo
5:42 pm - 12:05 pmSTL  Lambert-St Louis-FCO Rome Fiumicino
35h 23m1 stop Miami
$741American Airlines
Fri, Apr 30 - Sun, May 2
American Airlines Logo
10:00 am - 11:47 amFCO  Rome Fiumicino-STL Lambert-St Louis
32h 47m1 stop Chicago O'Hare Intl
American Airlines Logo
10:00 am - 12:05 pmSTL  Lambert-St Louis-FCO Rome Fiumicino
19h 05m1 stop Miami
$783American Airlines
Fri, Apr 30 - Sun, May 2
Lufthansa Logo
7:05 am - 9:52 pmFCO  Rome Fiumicino-STL Lambert-St Louis
21h 47m2 stops Frankfurt am Main Newark
Lufthansa Logo
1:15 pm - 8:30 amSTL  Lambert-St Louis-FCO Rome Fiumicino
12h 15m1 stop Washington, D.C. Dulles Intl
$788Lufthansa
Sat, Feb 6 - Sun, Feb 14
United Airlines Logo
6:45 am - 6:09 pmFCO  Rome Fiumicino-STL Lambert-St Louis
18h 24m2 stops Frankfurt am Main Chicago O'Hare Intl
United Airlines Logo
1:30 pm - 12:20 pmSTL  Lambert-St Louis-FCO Rome Fiumicino
15h 50m1 stop Denver Intl
$796United Airlines
Fri, Apr 30 - Sun, May 2
United Airlines Logo
6:45 am - 1:25 pmFCO  Rome Fiumicino-STL Lambert-St Louis
13h 40m1 stop Frankfurt am Main
United Airlines Logo
6:40 am - 10:00 amSTL  Lambert-St Louis-FCO Rome Fiumicino
20h 20m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
$797United Airlines
Fri, Apr 30 - Sun, May 2
United Airlines Logo
7:05 am - 11:20 pmFCO  Rome Fiumicino-STL Lambert-St Louis
23h 15m2 stops Frankfurt am Main Chicago O'Hare Intl
United Airlines Logo
4:39 pm - 2:00 pmSTL  Lambert-St Louis-FCO Rome Fiumicino
14h 21m2 stops Newark Zurich
$801United Airlines
Sat, Feb 6 - Sun, Feb 14
United Airlines Logo
6:45 am - 1:25 pmFCO  Rome Fiumicino-STL Lambert-St Louis
13h 40m1 stop Frankfurt am Main
United Airlines Logo
8:00 am - 10:00 amSTL  Lambert-St Louis-FCO Rome Fiumicino
19h 00m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
$802United Airlines
Fri, Apr 30 - Sun, May 2
Lufthansa Logo
11:00 am - 7:27 pmFCO  Rome Fiumicino-STL Lambert-St Louis
15h 27m1 stop Washington, D.C. Dulles Intl
Lufthansa Logo
9:52 am - 7:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
15h 03m1 stop Newark
$804Lufthansa
Sat, Feb 6 - Sun, Feb 14
Scandinavian Airlines Logo
11:55 am - 11:26 pmFCO  Rome Fiumicino-STL Lambert-St Louis
42h 31m2 stops Kastrup Copenhagen Atlanta Hartsfield-Jackson
Scandinavian Airlines Logo
3:48 pm - 11:05 amSTL  Lambert-St Louis-FCO Rome Fiumicino
36h 17m2 stops Atlanta Hartsfield-Jackson Kastrup Copenhagen
$894Scandinavian Airlines
Wed, Jan 6 - Sun, Jan 10

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American Airlines flights from Rome to St. Louis

Our best American Airlines deals on Rome to St. Louis flight tickets
American Airlines
Apr 30
FCO2:15 pmRome Fiumicino
36h 15m
1 stop
STL7:30 pmLambert-St Louis
May 2
STL5:42 pmLambert-St Louis
35h 23m
1 stop
FCO12:05 pmRome Fiumicino
$734
American Airlines
Apr 30
FCO2:15 pmRome Fiumicino
36h 15m
1 stop
STL7:30 pmLambert-St Louis
May 2
STL5:42 pmLambert-St Louis
35h 23m
1 stop
FCO12:05 pmRome Fiumicino
$741
American Airlines
Apr 30
FCO10:00 amRome Fiumicino
32h 47m
1 stop
STL11:47 amLambert-St Louis
May 2
STL10:00 amLambert-St Louis
19h 05m
1 stop
FCO12:05 pmRome Fiumicino
$783

United Airlines flights from Rome to St. Louis

Our best United Airlines deals on Rome to St. Louis flight tickets
United Airlines
Apr 30
FCO6:45 amRome Fiumicino
18h 24m
2 stops
STL6:09 pmLambert-St Louis
May 2
STL1:30 pmLambert-St Louis
15h 50m
1 stop
FCO12:20 pmRome Fiumicino
$796
United Airlines
Apr 30
FCO6:45 amRome Fiumicino
13h 40m
1 stop
STL1:25 pmLambert-St Louis
May 2
STL6:40 amLambert-St Louis
20h 20m
2 stops
FCO10:00 amRome Fiumicino
$797
United Airlines
Feb 6
FCO7:05 amRome Fiumicino
23h 15m
2 stops
STL11:20 pmLambert-St Louis
Feb 14
STL4:39 pmLambert-St Louis
14h 21m
2 stops
FCO2:00 pmRome Fiumicino
$801

momondo Fare Finder

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

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Route

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Price

Cheapest round-trip

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Fri 4/30

2:15 pm-7:30 pm

1 stop36h 15m

Lambert-St Louis

Sun 5/2

5:42 pm-12:05 pm

1 stop35h 23m

$734

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Fri 4/30

2:15 pm-7:30 pm

1 stop36h 15m

Lambert-St Louis

Sun 5/2

5:42 pm-12:05 pm

1 stop35h 23m

$741

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Fri 4/30

10:00 am-11:47 am

1 stop32h 47m

Lambert-St Louis

Sun 5/2

10:00 am-12:05 pm

1 stop19h 05m

$783

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Sat 2/6

7:05 am-9:52 pm

2 stops21h 47m

Lambert-St Louis

Sun 2/14

1:15 pm-8:30 am

1 stop12h 15m

$788

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Fri 4/30

6:45 am-6:09 pm

2 stops18h 24m

Lambert-St Louis

Sun 5/2

1:30 pm-12:20 pm

1 stop15h 50m

$796

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Fri 4/30

6:45 am-1:25 pm

1 stop13h 40m

Lambert-St Louis

Sun 5/2

6:40 am-10:00 am

2 stops20h 20m

$797

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Sat 2/6

7:05 am-11:20 pm

2 stops23h 15m

Lambert-St Louis

Sun 2/14

4:39 pm-2:00 pm

2 stops14h 21m

$801

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Fri 4/30

6:45 am-1:25 pm

1 stop13h 40m

Lambert-St Louis

Sun 5/2

8:00 am-10:00 am

2 stops19h 00m

$802
Quickest round-trip

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Sat 2/6

11:00 am-7:27 pm

1 stop15h 27m

Lambert-St Louis

Sun 2/14

9:52 am-7:55 am

1 stop15h 03m

$804

RomeSt. Louis

FCO Rome Fiumicino - STL Lambert-St Louis

FCOSTL

Rome Fiumicino

Wed 1/6

11:55 am-11:26 pm

2 stops42h 31m

Lambert-St Louis

Sun 1/10

3:48 pm-11:05 am

2 stops36h 17m

$894

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

In general, September is the cheapest month to fly from Rome to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of March is another great option to travel to St. Louis, with average flight prices from Rome averaging around $0.

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

You could potentially save up to 1% 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

Best Price Found

$570

Fastest flight time

15h 46m

Direct flights

None
The best one-way flight to St. Louis from Rome in the past 72 hours is $570. The best round-trip flight deal from Rome to St. Louis found on momondo in the last 72 hours is $734.
The fastest flight from Rome to St. Louis takes 15h 46m
There are no direct flights from Rome to St. Louis. There are no popular flight routes from Rome to St. Louis.
Search flight deals

Frequently asked questions about flying from Rome to St. Louis

  • How far is Rome to Lambert-St Louis by plane?

    The distance between Rome and Lambert-St Louis is about 5053.3 mi. 15h 46m 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.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Maryland Heights
St. Peters
Alton
Collinsville
Farmington
Florissant
Festus
Hermann
Clayton
Fenton
Edwardsville
O'Fallon
Eureka
Wentzville
Litchfield
Grafton
Waterloo

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.

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