STL - FCO

$292 Find Cheap Flights from St. Louis to Rome

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Rome departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Rome Fiumicino Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Rome.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Rome.
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Everything you should know

Cheapest round-trip
$435
Typical prices: $744-$935
Lufthansa
Mon 12/8Wed 12/24
STL - FCO • 2 stops
Cheapest one-way
$292
Typical prices: $540-$541
Multiple Airlines
Sun 1/18
STL - FCO • 2 stops
Top airlines
Lufthansa
Cheapest • from $435 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 28% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Rome!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Rome that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Dec 8 - Wed, Dec 24
Lufthansa Logo
6:42 pm - 11:00 pmSTL-FCO
21h 18m2 stops
Lufthansa Logo
7:05 am - 1:55 pmFCO-STL
13h 50m1 stop
$435Lufthansa
Find Deal
Wed, Dec 3 - Wed, Dec 10
Air Canada Logo
5:27 pm - 10:55 amSTL-FCO
34h 28m2 stops
Air Canada Logo
1:10 pm - 2:23 pmFCO-STL
32h 13m2 stops
$466Air Canada
Find Deal
Fri, Dec 5 - Fri, Dec 12
United Airlines Logo
8:30 am - 8:30 amSTL-FCO
17h 00m1 stop
United Airlines Logo
1:10 pm - 2:25 pmFCO-STL
32h 15m2 stops
$483United Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 24
United Airlines Logo
12:55 pm - 8:30 amSTL-FCO
12h 35m1 stop
United Airlines Logo
7:05 am - 1:55 pmFCO-STL
13h 50m1 stop
$487United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
KLM Logo
11:40 am - 10:30 amSTL-FCO
15h 50m1 stop
KLM Logo
10:05 am - 5:10 pmFCO-STL
14h 05m1 stop
$506KLM
Find Deal
Sat, Feb 14 - Sat, Feb 21
American Airlines Logo
1:44 pm - 1:30 pmSTL-FCO
16h 46m2 stops
American Airlines Logo
7:30 am - 6:03 pmFCO-STL
17h 33m2 stops
$510American Airlines
Find Deal
Tue, Dec 30 - Wed, Jan 14
KLM Logo
7:00 am - 10:30 amSTL-FCO
20h 30m1 stop
KLM Logo
12:40 pm - 5:50 pmFCO-STL
36h 10m1 stop
$606KLM
Find Deal
Thu, Dec 4 - Sat, Dec 13
Delta Logo
6:39 am - 9:10 amSTL-FCO
19h 31m2 stops
Delta Logo
11:05 am - 11:27 pmFCO-STL
19h 22m2 stops
$620Delta
Find Deal
Tue, Dec 30 - Wed, Jan 14
American Airlines Logo
5:30 am - 9:00 amSTL-FCO
20h 30m1 stop
American Airlines Logo
8:20 pm - 8:51 amFCO-STL
19h 31m2 stops
$651American Airlines
Find Deal
Wed, Mar 4 - Wed, Mar 11
Delta Logo
10:18 am - 11:45 amSTL-FCO
18h 27m2 stops
Delta Logo
6:10 am - 11:40 pmFCO-STL
23h 30m2 stops
$728Delta
Find Deal
Booking Insights

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

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

How much is a round-trip flight from St. Louis to Rome Fiumicino Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Rome Fiumicino Airport departing in December.

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

The average price of all round-trip flights from St. Louis to Rome Fiumicino Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from St. Louis to Rome, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Rome, Thursday is the cheapest day to fly and Tuesday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Rome Fiumicino Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Rome Fiumicino Airport is January, where tickets cost $736 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,540 and $1,393 respectively.

How far in advance should I book a flight from St. Louis to Rome Fiumicino Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Rome Fiumicino Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Rome Fiumicino Airport, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$292
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from St. Louis to Rome

When to book flights from St. Louis to Rome

Are your dates flexible? Find out the best times to travel from St. Louis to Rome based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Rome flights

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

    In the last 3 days, the lowest price for a flight from St. Louis to Rome Fiumicino Airport was $292 for a one-way ticket and $435 for a round-trip.

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

    A passport is required to fly from St. Louis to Rome.

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

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

  • Which airline alliances offer flights from St. Louis to Rome?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Rome, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Rome, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from St. Louis to Rome are Delta and KLM. With an average price for the route of $873 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $995 and an overall rating of 7.7.

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

    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 St. Louis to Rome.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rome from St. Louis 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 St. Louis to Rome?

    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 Rome with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and FCO 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 St. Louis to Rome?

    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 Rome from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Rome

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Rome. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Rome? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8004 reviews
7.3Food
7.9Comfort
8.5Crew
7.9Entertainment
8.2Boarding
Airline reviews

I truly love flying with Delta. They have always treated me with the upmost respect

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

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

Information on your arrival and departure airports