Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Rome from $308

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 10/22. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Rome

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:33 am - 8:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
17h 22m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
7:05 am - 7:40 pmFCO  Rome Fiumicino-STL Lambert-St Louis
19h 35m2 stops Frankfurt am Main Newark
$768Multiple Airlines
Sun, Jan 31 - Thu, Feb 4
United Airlines Logo
11:28 am - 7:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
13h 27m1 stop Newark
United Airlines Logo
1:15 pm - 10:32 amFCO  Rome Fiumicino-STL Lambert-St Louis
28h 17m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$770United Airlines
Sun, Nov 15 - Wed, Nov 25
Air Canada Logo
8:30 am - 8:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
17h 25m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
1:15 pm - 10:32 amFCO  Rome Fiumicino-STL Lambert-St Louis
28h 17m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$773Air Canada
Sun, Nov 15 - Wed, Nov 25
United Airlines Logo
6:30 am - 8:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
19h 25m2 stops Newark Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
11:15 am - 2:30 pmFCO  Rome Fiumicino-STL Lambert-St Louis
34h 15m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$774United Airlines
Sun, Jan 31 - Thu, Feb 4
Multiple Airlines Logo
5:20 pm - 7:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
31h 35m1 stop Newark
Multiple Airlines Logo
11:15 am - 3:26 pmFCO  Rome Fiumicino-STL Lambert-St Louis
35h 11m1 stop Toronto Pearson Intl
$776Multiple Airlines
Sun, Jan 31 - Thu, Feb 4
Air Canada Logo
7:33 am - 8:55 amSTL  Lambert-St Louis-FCO Rome Fiumicino
18h 22m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
11:15 am - 3:41 pmFCO  Rome Fiumicino-STL Lambert-St Louis
35h 26m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$778Air Canada
Sun, Dec 6 - Tue, Dec 8
Delta Logo
3:20 pm - 10:15 amSTL  Lambert-St Louis-FCO Rome Fiumicino
11h 55m1 stop Minneapolis St Paul
Delta Logo
10:25 am - 6:01 pmFCO  Rome Fiumicino-STL Lambert-St Louis
14h 36m1 stop Atlanta Hartsfield-Jackson
$790Delta
Tue, Nov 10 - Tue, Jan 12
Delta Logo
2:18 pm - 9:35 amSTL  Lambert-St Louis-FCO Rome Fiumicino
12h 17m1 stop Detroit Metropolitan Wayne County
Delta Logo
12:45 pm - 11:56 pmFCO  Rome Fiumicino-STL Lambert-St Louis
18h 11m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$790Delta
Mon, Nov 9 - Wed, Nov 18
American Airlines Logo
5:31 pm - 4:55 pmSTL  Lambert-St Louis-FCO Rome Fiumicino
16h 24m2 stops Chicago O'Hare Intl London Heathrow
American Airlines Logo
7:30 am - 6:17 pmFCO  Rome Fiumicino-STL Lambert-St Louis
17h 47m2 stops Madrid Barajas Chicago O'Hare Intl
$790American Airlines
Mon, Nov 9 - Wed, Nov 18
American Airlines Logo
1:15 pm - 9:00 amSTL  Lambert-St Louis-FCO Rome Fiumicino
12h 45m1 stop Philadelphia
American Airlines Logo
1:00 pm - 11:33 pmFCO  Rome Fiumicino-STL Lambert-St Louis
17h 33m1 stop Dallas/Fort Worth
$824American Airlines
Mon, Nov 9 - Tue, Nov 17

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from St. Louis to Rome

Our best United Airlines deals on St. Louis to Rome flight tickets
United Airlines
Nov 15
STL11:28 amLambert-St Louis
13h 27m
1 stop
FCO7:55 amRome Fiumicino
Nov 25
FCO1:15 pmRome Fiumicino
28h 17m
2 stops
STL10:32 amLambert-St Louis
$770
United Airlines
Jan 31
STL6:30 amLambert-St Louis
19h 25m
2 stops
FCO8:55 amRome Fiumicino
Feb 4
FCO11:15 amRome Fiumicino
34h 15m
2 stops
STL2:30 pmLambert-St Louis
$774
United Airlines
Dec 6
STL1:00 pmLambert-St Louis
12h 30m
1 stop
FCO8:30 amRome Fiumicino
Dec 8
FCO11:15 amRome Fiumicino
35h 26m
2 stops
STL3:41 pmLambert-St Louis
$775

Lufthansa flights from St. Louis to Rome

Our best Lufthansa deals on St. Louis to Rome flight tickets
Lufthansa
Nov 8
STL6:50 pmLambert-St Louis
16h 10m
2 stops
FCO6:00 pmRome Fiumicino
Nov 18
FCO7:05 amRome Fiumicino
13h 40m
1 stop
STL1:45 pmLambert-St Louis
$796
Lufthansa
Nov 8
STL6:50 pmLambert-St Louis
16h 10m
2 stops
FCO6:00 pmRome Fiumicino
Nov 18
FCO7:05 amRome Fiumicino
13h 40m
1 stop
STL1:45 pmLambert-St Louis
$797
Lufthansa
Feb 1
STL7:04 pmLambert-St Louis
21h 06m
2 stops
FCO11:10 pmRome Fiumicino
Feb 8
FCO6:50 pmRome Fiumicino
55h 50m
2 stops
STL7:40 pmLambert-St Louis
$799

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 August 17, 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 Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 1/31

8:33 am-8:55 am

2 stops17h 22m

Rome Fiumicino

Thu 2/4

7:05 am-7:40 pm

2 stops19h 35m

$768

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

11:28 am-7:55 am

1 stop13h 27m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$770

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 11/15

8:30 am-8:55 am

2 stops17h 25m

Rome Fiumicino

Wed 11/25

1:15 pm-10:32 am

2 stops28h 17m

$773

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 1/31

6:30 am-8:55 am

2 stops19h 25m

Rome Fiumicino

Thu 2/4

11:15 am-2:30 pm

2 stops34h 15m

$774

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 1/31

5:20 pm-7:55 am

1 stop31h 35m

Rome Fiumicino

Thu 2/4

11:15 am-3:26 pm

1 stop35h 11m

$776

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Sun 12/6

7:33 am-8:55 am

2 stops18h 22m

Rome Fiumicino

Tue 12/8

11:15 am-3:41 pm

2 stops35h 26m

$778
Quickest round-trip

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Tue 11/10

3:20 pm-10:15 am

1 stop11h 55m

Rome Fiumicino

Tue 1/12

10:25 am-6:01 pm

1 stop14h 36m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

2:18 pm-9:35 am

1 stop12h 17m

Rome Fiumicino

Wed 11/18

12:45 pm-11:56 pm

2 stops18h 11m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

5:31 pm-4:55 pm

2 stops16h 24m

Rome Fiumicino

Wed 11/18

7:30 am-6:17 pm

2 stops17h 47m

$790

St. LouisRome

STL Lambert-St Louis - FCO Rome Fiumicino

STLFCO

Lambert-St Louis

Mon 11/9

1:15 pm-9:00 am

1 stop12h 45m

Rome Fiumicino

Tue 11/17

1:00 pm-11:33 pm

1 stop17h 33m

$824

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Prices are currently low for flights on this route.

Typical prices usually range from $800 to $1,136.
The lowest price recently found on this route was $768.

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 $993 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.

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 30m

Direct flights

None
The fastest flight from St. Louis to Rome takes 12h 30m
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 12h 30m 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
8,172 reviews
Search British Airways flights
LufthansaPriceFrom $500Free CancellationRating
6.8
8,194 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.8
1,558 reviews
Search KLM flights
United AirlinesPriceFrom $618Free CancellationRating
7.4
10,106 reviews
Search United Airlines flights
DeltaPriceFrom $665Free CancellationRating
7.8
8,503 reviews
Search Delta flights
American AirlinesPriceFrom $778Free CancellationRating
7.1
11,945 reviews
Search American Airlines flights
Air CanadaPriceFrom $810Free CancellationRating
7.1
11,485 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
Gaeta
Orvieto
Montepulciano
Ladispoli
Pienza
Tivoli
Sperlonga
Chianciano Terme
Orbetello
Ponza
Ciampino
Porto Ercole
Terracina
Cassino
Saturnia
Ascoli Piceno
Foligno
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.

An easier way to manage your Rome trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 9/16
Wed 9/23
By creating a price alert you accept our terms of use and privacy policy.

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