Question 1

What is the cheapest flight from Rome Fiumicino Airport to St. Louis?

Accepted Answer

In the last 3 days, the lowest price for a flight from Rome Fiumicino Airport to St. Louis was $421 for a one-way ticket and $790 for a round-trip. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 2

Do I need a passport to fly between Rome and St. Louis?

Accepted Answer

Yes, you'll most likely have to show a valid passport before boarding the plane in Rome and on arrival in St. Louis. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 3

What’s the cheapest day of the week to fly from Rome to St. Louis?

Accepted Answer

For Rome to St. Louis, Thursday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from St. Louis back to Rome, the best deals are generally found on Tuesday, with Sunday being the most expensive. Visit our flight page for the latest deals!>/a>

Question 4

What’s the cheapest day of the week to fly from Rome to St. Louis?

Accepted Answer

For Rome to St. Louis, Thursday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from St. Louis back to Rome, the best deals are generally found on Tuesday, with Sunday being the most expensive. Visit our flight page for the latest deals!>/a>

Question 5

Which airports will I be using when flying from Rome to St. Louis?

Accepted Answer

Rome and St. Louis are both served by 1 main airport. You will leave Rome from Rome Fiumicino and will be arriving at Lambert-St Louis. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 6

Which aircraft models fly most regularly from Rome to St. Louis?

Accepted Answer

We unfortunately don’t have that data for this specific route.

Question 7

How does KAYAK find such low prices on flights from Rome to St. Louis?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Rome to St. Louis. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 8

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Rome to St. Louis?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Rome is likely to change within 7 days, so travelers know whether to wait or book now. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 9

What is the Hacker Fare option on flights from Rome to St. Louis?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Rome with another airline. Booking your flights between Rome and STL can sometimes prove cheaper using this method. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 10

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Rome to St. Louis?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Rome up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Rome-Fiumicino-FCO/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 11

What is the cheapest layover airport when flying from Rome to St. Louis?

Accepted Answer

Flights via Toronto (YYZ) offer the most affordable fares, with an average round-trip price of $928.

Question 12

What is the most popular layover airport when flying from Rome to St. Louis?

Accepted Answer

Atlanta (ATL) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Rome to St. Louis picked an itinerary connecting there.

Question 13

Which layover airport has the quickest connection when flying from Rome to St. Louis?

Accepted Answer

If you prefer a quick connection, Toronto (YYZ) often has the shortest layovers from Rome to St. Louis, with an average of 2h 28m.

Question 14

Which layover airport offers the shortest total travel time from Rome to St. Louis?

Accepted Answer

Consider flying via Toronto (YYZ) for the shortest journey. The average one-way travel time for flights connecting there is 14h 20m.

Question 15

Which airlines provide the cheapest flights from Rome to St. Louis?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Rome to St. Louis were found on Lufthansa ($790) and American Airlines ($796).

Question 16

Which airlines provide the cheapest flights from Rome to St. Louis?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Rome to St. Louis were found on Lufthansa ($790) and American Airlines ($796).

Low season	April
High season	August
Cheapest flight	$421

FCO - STL

$421 Find Cheap Flights from Rome to St. Louis

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

Everything you should know

Cheap Flights from Rome to St. Louis (FCO-STL)

Recent round-trip flight deals from Rome to St. Louis

Recent one-way flight deals from Rome to St. Louis

KAYAK's insights & trends for Rome to St. Louis flights

Get data-powered insights and trends into flights from Rome to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Rome to St. Louis?

For Rome to St. Louis, Thursday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from St. Louis back to Rome, the best deals are generally found on Tuesday, with Sunday being the most expensive.

Which airlines provide the cheapest flights from Rome to St. Louis?

In the past 3 days, the cheapest round-trip tickets from Rome to St. Louis were found on Lufthansa ($790) and American Airlines ($796).

What is the most popular layover airport when flying from Rome to St. Louis?

Atlanta (ATL) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Rome to St. Louis picked an itinerary connecting there.

What is the cheapest layover airport when flying from Rome to St. Louis?

Flights via Toronto (YYZ) offer the most affordable fares, with an average round-trip price of $928.

Which layover airport offers the shortest total travel time from Rome to St. Louis?

Consider flying via Toronto (YYZ) for the shortest journey. The average one-way travel time for flights connecting there is 14h 20m.

Which layover airport has the quickest connection when flying from Rome to St. Louis?

If you prefer a quick connection, Toronto (YYZ) often has the shortest layovers from Rome to St. Louis, with an average of 2h 28m.

Good to know

When to book flights from Rome to St. Louis

FAQs for booking Rome to St. Louis flights

What is the cheapest flight from Rome Fiumicino Airport to St. Louis?

In the last 3 days, the lowest price for a flight from Rome Fiumicino Airport to St. Louis was $421 for a one-way ticket and $790 for a round-trip.

Do I need a passport to fly between Rome and St. Louis?

Yes, you'll most likely have to show a valid passport before boarding the plane in Rome and on arrival in St. Louis.

Which airports will I be using when flying from Rome to St. Louis?

Rome and St. Louis are both served by 1 main airport. You will leave Rome from Rome Fiumicino and will be arriving at Lambert-St Louis.

Which aircraft models fly most regularly from Rome to St. Louis?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Rome to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Rome to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Rome to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Rome is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Rome to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Rome with another airline. Booking your flights between Rome and STL can sometimes prove cheaper using this method.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Rome to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Rome up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Rome to St. Louis

Information on your arrival and departure airports

Cabin class types available on flights to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Find direct flights to and from Rome and St. Louis

Flights to other popular destinations

Flights from domestic origins to St. Louis

Choose which airport to fly into in Rome

Find deals for your return flight