Cheap flights from St. Louis to Rome from $327
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 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 3/14
4:05 pm-7:25 pm
2 stops21h 20m
Rome Fiumicino
Wed 3/24
12:50 pm-3:02 pm
2 stops32h 12m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 11/9
10:05 am-8:15 am
1 stop15h 10m
Rome Fiumicino
Fri 11/20
10:00 am-5:14 pm
1 stop14h 14m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 3/14
4:40 pm-5:45 pm
1 stop19h 05m
Rome Fiumicino
Wed 3/24
12:50 pm-3:02 pm
2 stops32h 12m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 3/14
4:40 pm-5:45 pm
1 stop19h 05m
Rome Fiumicino
Wed 3/24
7:05 am-2:45 pm
1 stop13h 40m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 3/15
7:30 am-7:55 am
1 stop18h 25m
Rome Fiumicino
Wed 3/24
12:50 pm-3:41 pm
2 stops32h 51m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sat 3/13
7:04 pm-7:55 am
2 stops29h 51m
Rome Fiumicino
Wed 3/24
12:20 pm-3:02 pm
2 stops32h 42m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Sun 2/28
6:00 am-8:30 am
2 stops19h 30m
Rome Fiumicino
Thu 3/11
11:15 am-3:02 pm
2 stops34h 47m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 1/11
4:05 pm-8:55 am
2 stops57h 50m
Rome Fiumicino
Wed 1/27
1:15 pm-2:28 pm
2 stops32h 13m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 1/11
6:45 pm-6:00 pm
2 stops16h 15m
Rome Fiumicino
Wed 1/27
7:05 am-1:45 pm
1 stop13h 40m
St. LouisRome
STL Lambert-St Louis - FCO Rome Fiumicino
STLFCO
Lambert-St Louis
Mon 11/9
10:05 am-8:15 am
1 stop15h 10m
Rome Fiumicino
Thu 12/3
6:10 am-4:30 pm
2 stops17h 20m
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 $1,038 to $1,304.The lowest price recently found on this route was $721.
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 $1,002 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.
Can stopping save me money on St. Louis to Rome flights?
You could potentially save up to 21% 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?
What is the cheapest airline that flies from Lambert-St Louis to Rome?
Iberia, British Airways, and United Airlines are the most popular carriers operating from Lambert-St Louis to Rome
What airlines fly to Rome?
United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Rome from St. Louis according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Rome. Keep in mind that there are 7 different airlines that fly to Rome on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between St. Louis and Rome?
Montreal (YUL) was the most common stop: 58% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from St. Louis to Rome?
Flights via Charlotte (CLT) offer the lowest average round-trip price of $825.
Which layover airport has the shortest travel time from St. Louis to Rome?
Flights connecting via Charlotte (CLT) have the shortest average one-way travel time: 11h 55m.
Which layover airport has the shortest connection time from St. Louis to Rome?
Charlotte (CLT) has the shortest average layover time for this route: 2h 12m.
When to book flights from St. Louis to Rome
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
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 11h 27m 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?
As of October 2026, there are 7 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Rome is United Airlines (32% of total bookings). The next most popular airlines are British Airways (19%), Air Canada (17%), and Delta (13%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $472 | Free Cancellation | Rating 6.7 8,255 reviews | |||
| PriceFrom $500 | Free Cancellation | Rating 6.8 8,272 reviews | |||
| PriceFrom $506 | Free Cancellation | Rating 7.8 1,580 reviews | |||
| PriceFrom $596 | Free Cancellation | Rating 7.8 8,641 reviews | |||
| PriceFrom $810 | Free Cancellation | Rating 7.1 11,744 reviews | |||
| PriceFrom $867 | Free Cancellation | Rating 7.0 12,144 reviews | |||
| PriceFrom $894 | Free Cancellation | Rating 7.4 10,319 reviews |
Traveling to a place near Rome?
Book flights to Rome if you plan to visit one of these locationsWhy 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.