Cheap flights from Rome to St Louis

Compare Rome to St Louis flight deals

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Flight deals from Rome to St Louis

Looking for a cheap last-minute deal or the best round-trip flight from Rome to St Louis Airport? If you want to travel next month, round-trip fares start from $902. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Rome to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Rome to St Louis flights are currently cheapest in September.

Rome to St Louis: Alternative routes

Compare routes from Rome to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Rome to St Louis: Flight information

The things to know before you go.
Cheapest flight found$790
Cheapest month to flyAugust

Finding cheap flights from Rome to St Louis: Frequently asked questions

The best price we found for a round-trip flight from Rome to St Louis is $790. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Rome to St Louis. But we found flights with one stop from $790.
There are no flights flying from Rome to St Louis, as of July 2026.
The cheapest month to fly from Rome to St Louis is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Rome to St Louis Airport on Wednesday, August 26, 2026.
No airlines currently offer direct flights between Rome and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

The cheapest airline that flies to St Louis is Norse Atlantic Airways.

Flying from Rome to St Louis Lambert International Airport (STL): What you need to know

  • The timezone in St Louis is UTC-6, which is seven hours behind Rome. St Louis Lambert International Airport is located in St Louis.

  • To ensure you catch your flight from Rome to STL, leave enough time for things like check-in and baggage drop. Arriving two hours before international departures and an hour before domestic flights is the standard rule.

  • You can expect longer lines in popular months such as August and other peak periods. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a good idea.

Airports in Rome

Rome Leonardo da Vinci Fiumicino Airport (FCO)

  • A stopover is the perfect opportunity to break up your trip and possibly even tour another city. When searching for cheap flights from Rome to STL departing from Rome Leonardo da Vinci Fiumicino Airport (FCO), uncheck the 'Direct flights only' box to find all potential stops. Your journey might pause in:

    • Chicago O'Hare International Airport (ORD)

    • Frankfurt Airport (FRA)

    • Detroit Metropolitan Wayne County Airport (DTW)

  • Located around 32 kilometers from the center of Rome, FCO can be reached in about 40 minutes by car (depending on traffic). The journey on public transport is roughly 30 minutes.

  • Catching an early flight from Rome to St Louis Lambert International Airport? Avoid the stress of rushing to the terminal (and enjoy a little extra shut-eye) by staying at one of these stays close to Rome Leonardo da Vinci Fiumicino Airport:

  • 78% of flights that leave from Rome Leonardo da Vinci Fiumicino Airport touch down at their destination on time.

Rome Ciampino Airport (CIA)

  • On public transport, you can travel from central Rome to CIA in about 20 minutes. The terminal is roughly 14 kilometers away, and making the trip by car takes approximately 20 minutes.

  • Want to enjoy an extra night away before boarding your Rome to STL flight? Check in to a hotel near Rome Ciampino Airport before your vacation officially begins. Here's where you can stay:

  • Flights from Rome Ciampino Airport are known for their punctuality, with 85% of them arriving within the expected time frame.

About St Louis Lambert International Airport (STL)

Getting from St Louis Lambert International Airport (STL) to central St Louis

  • Central St Louis is around 24 kilometers from St Louis Lambert International Airport and takes about 25 minutes to reach by car. See what your options are for making the trip into the city, whether that's with a cab, car rental or ride-share.

  • It'll take around 30 minutes if you're traveling by public transport.

How to find the cheapest flights from Rome to St Louis Lambert International Airport (STL)

  • Currently, $424 is the best price we've found for a one-way ticket from Rome to St Louis Lambert International Airport. The cheapest price for a return flight is $790. Remember fares can change due to demand at the time of booking.

  • Booking in advance is often the key to scoring a cheap flight from Rome to STL. Flight prices rise as demand increases, so the closer your departure date, the more you'll likely spend on your ticket.

  • Affordable Rome to St Louis Lambert International Airport tickets are easier to find when you have flexibility in your schedule. Try using the 'Whole month' tool to compare fares throughout the month and then pick the cheapest day.

  • Save time looking for cheap plane tickets from Rome to STL by setting up a Price Alert. We'll send you an email or notification through the app when prices go down.

  • Tailor your flights using filters. Select your arrival and departure times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Rome to St Louis Lambert International Airport.

The best time to fly from Rome to St Louis Lambert International Airport (STL)

  • It's time to figure out when to book your flight from Rome to St Louis Lambert International Airport (STL). July is the busiest month to travel to St Louis. If you like things a bit more low-key, go in December.

  • Book a Rome to STL plane ticket departing in July if you're eager to experience the city during its warmest month. You can expect temperatures in St Louis to range from 17ºC (63ºF) to 33ºC (91ºF).

  • Search for cheap tickets from Rome to St Louis Lambert International Airport in January if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 8ºC (46ºF).

More about St Louis

Explore more of the United States

  • Evansville is just one of the many cities in the United States waiting to be discovered once you've seen St Louis. Around 257 kilometers away to the east, well-known attractions include Mesker Park Zoo, Riverfront Park and Evansville Museum of Arts, History & Science.

  • Columbia is another must-experience destination in the United States and is around 177 kilometers west of St Louis. No trip is complete without dropping by Museum of Art and Archaeology, Mizzou Botanic Garden and Francis Quadrangle.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.