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Cheap flights from St. Louis to Rome from $362

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 8/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:42 pm - 11:05 am
STL
-
FCO
36h 23m
2 stops
Scandinavian Airlines Logo
9:30 am - 11:37 pm
FCO
-
STL
21h 07m
2 stops
$711Scandinavian Airlines
Do, Aug 27 - So, Sep 6
Scandinavian Airlines Logo
1:30 pm - 8:40 am
STL
-
FCO
36h 10m
2 stops
Scandinavian Airlines Logo
11:55 am - 11:37 pm
FCO
-
STL
42h 42m
2 stops
$727Scandinavian Airlines
Fr, Sep 11 - Mi, Sep 30
Multiple Airlines Logo
9:35 pm - 4:55 pm
STL
-
FCO
12h 20m
1 stop
Multiple Airlines Logo
1:10 pm - 11:03 pm
FCO
-
STL
16h 53m
1 stop
$750Multiple Airlines
Mi, Aug 5 - Mi, Aug 19
British Airways Logo
1:01 pm - 10:20 am
STL
-
FCO
14h 19m
1 stop
British Airways Logo
10:00 am - 11:51 pm
FCO
-
STL
20h 51m
1 stop
$752British Airways
Mi, Aug 5 - Mi, Aug 19
Lufthansa Logo
1:13 pm - 11:50 am
STL
-
FCO
15h 37m
2 stops
Lufthansa Logo
12:45 pm - 9:22 pm
FCO
-
STL
15h 37m
2 stops
$757Lufthansa
Mi, Aug 5 - Mi, Aug 19
Lufthansa Logo
3:30 pm - 12:30 pm
STL
-
FCO
14h 00m
1 stop
Lufthansa Logo
12:45 pm - 9:22 pm
FCO
-
STL
15h 37m
2 stops
$763Lufthansa
Mi, Aug 5 - Mi, Aug 19
British Airways Logo
4:18 pm - 2:20 pm
STL
-
FCO
15h 02m
2 stops
British Airways Logo
10:00 am - 11:51 pm
FCO
-
STL
20h 51m
1 stop
$771British Airways
Mi, Aug 5 - Mi, Aug 19
Iberia Logo
12:55 pm - 3:25 pm
STL
-
FCO
19h 30m
2 stops
Iberia Logo
10:00 am - 10:17 pm
FCO
-
STL
19h 17m
1 stop
$781Iberia
Mi, Apr 15 - Mi, Apr 22
Iberia Logo
12:55 pm - 3:25 pm
STL
-
FCO
19h 30m
2 stops
Iberia Logo
7:35 am - 7:33 pm
FCO
-
STL
18h 58m
2 stops
$784Iberia
Mi, Apr 15 - Mi, Apr 22
Multiple Airlines Logo
7:05 am - 9:40 pm
STL
-
CIA
31h 35m
3 stops
Multiple Airlines Logo
5:55 pm - 1:25 pm
CIA
-
STL
26h 30m
2 stops
$1,156Multiple Airlines
Mo, Jun 8 - Mo, Jun 15

Lufthansa flights from St. Louis to Rome

Our best Lufthansa deals on St. Louis to Rome flight tickets
Lufthansa
Aug 5
STL1:13 pmLambert-St Louis
15h 37m
2 stops
FCO11:50 amRome Fiumicino
Aug 19
FCO12:45 pmRome Fiumicino
15h 37m
2 stops
STL9:22 pmLambert-St Louis
$757
Lufthansa
Aug 5
STL3:30 pmLambert-St Louis
14h 00m
1 stop
FCO12:30 pmRome Fiumicino
Aug 19
FCO12:45 pmRome Fiumicino
15h 37m
2 stops
STL9:22 pmLambert-St Louis
$763
Lufthansa
Aug 5
STL3:30 pmLambert-St Louis
14h 00m
1 stop
FCO12:30 pmRome Fiumicino
Aug 19
FCO12:45 pmRome Fiumicino
17h 15m
2 stops
STL11:00 pmLambert-St Louis
$764

British Airways flights from St. Louis to Rome

Our best British Airways deals on St. Louis to Rome flight tickets
British Airways
Aug 5
STL1:01 pmLambert-St Louis
14h 19m
1 stop
FCO10:20 amRome Fiumicino
Aug 19
FCO10:00 amRome Fiumicino
20h 51m
1 stop
STL11:51 pmLambert-St Louis
$752
British Airways
Aug 5
STL4:18 pmLambert-St Louis
15h 02m
2 stops
FCO2:20 pmRome Fiumicino
Aug 19
FCO10:00 amRome Fiumicino
20h 51m
1 stop
STL11:51 pmLambert-St Louis
$771
British Airways
Aug 7
STL6:06 amLambert-St Louis
20h 04m
1 stop
FCO9:10 amRome Fiumicino
Aug 24
FCO4:50 pmRome Fiumicino
33h 40m
1 stop
STL7:30 pmLambert-St Louis
$794

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Rome that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated März 22, 2026.
Use the filters below to find and compare flights from St. Louis to Rome that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Do 8/27

3:42 pm-11:05 am

2 stops36h 23m

Rome Fiumicino

So 9/6

9:30 am-11:37 pm

2 stops21h 07m

$711

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Fr 9/11

1:30 pm-8:40 am

2 stops36h 10m

Rome Fiumicino

Mi 9/30

11:55 am-11:37 pm

2 stops42h 42m

$727
Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 8/5

9:35 pm-4:55 pm

1 stop12h 20m

Rome Fiumicino

Mi 8/19

1:10 pm-11:03 pm

1 stop16h 53m

$750

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 8/5

1:01 pm-10:20 am

1 stop14h 19m

Rome Fiumicino

Mi 8/19

10:00 am-11:51 pm

1 stop20h 51m

$752

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 8/5

1:13 pm-11:50 am

2 stops15h 37m

Rome Fiumicino

Mi 8/19

12:45 pm-9:22 pm

2 stops15h 37m

$757

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 8/5

3:30 pm-12:30 pm

1 stop14h 00m

Rome Fiumicino

Mi 8/19

12:45 pm-9:22 pm

2 stops15h 37m

$763

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 8/5

4:18 pm-2:20 pm

2 stops15h 02m

Rome Fiumicino

Mi 8/19

10:00 am-11:51 pm

1 stop20h 51m

$771

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 4/15

12:55 pm-3:25 pm

2 stops19h 30m

Rome Fiumicino

Mi 4/22

10:00 am-10:17 pm

1 stop19h 17m

$781

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Mi 4/15

12:55 pm-3:25 pm

2 stops19h 30m

Rome Fiumicino

Mi 4/22

7:35 am-7:33 pm

2 stops18h 58m

$784

St. LouisRome

STL - CIA

STLCIA

Lambert-St Louis

Mo 6/8

7:05 am-9:40 pm

3 stops31h 35m

Rome Ciampino

Mo 6/15

5:55 pm-1:25 pm

2 stops26h 30m

$1,156

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 Rome from

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

What is the typical price of a round-trip flight between St. Louis and Rome?

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 $540, 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 $663.

How far in advance should I book a flight 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 $897 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 $731 on momondo.

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

You could potentially save up to 4% 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

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from St. Louis to Rome takes 12h 25m
There are no direct flights from St. Louis to Rome. There are no popular flight routes from St. Louis to Rome.
Search flight deals

  • 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 12h 25m 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?

  • 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?

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 AirwaysPriceFrom $472Free CancellationRating
6.7
7,811 reviews
Search British Airways flights
LufthansaPriceFrom $500Free CancellationRating
6.8
7,862 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.8
1,477 reviews
Search KLM flights
United AirlinesPriceFrom $543Free CancellationRating
7.4
9,459 reviews
Search United Airlines flights
DeltaPriceFrom $555Free CancellationRating
7.9
8,319 reviews
Search Delta flights
American AirlinesPriceFrom $665Free CancellationRating
7.1
11,488 reviews
Search American Airlines flights
Air CanadaPriceFrom $705Free CancellationRating
7.1
10,834 reviews
Search Air Canada flights

Traveling to a place near Rome?

Book flights to Rome if you plan to visit one of these locations
Fiumicino
Civitavecchia
Cassino
Ponza
Gaeta
Montepulciano
Pienza
Orvieto
Chianciano Terme
Sperlonga
Terracina
Tivoli
Ladispoli
Santa Marinella
Ascoli Piceno
Ciampino
Saturnia
Grosseto
Orbetello
Cortona

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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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
Rome Ciampino Airport
Rome Fiumicino Airport