STL - ROM

$413 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 8/30. 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

 
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
$779
Typical prices: $1,111-$763
Scandinavian Airlines
Sun 9/13Sat 9/19
STL - FCO • 2 stops
Cheapest one-way
$413
Typical prices: $429-$684
British Airways
Sun 8/30
STL - FCO • 1 stop
Top airlines
Cheapest • from $779 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between St. Louis and Rome. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $752 (round-trip)
Shortest trip • 11h 51m (one-way)
Insights
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
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Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

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

 
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

Sun, Sep 13 - Sat, Sep 19
Scandinavian Airlines Logo
3:42 pm - 6:35 pm
STL
-
FCO
19h 53m
2 stops
Scandinavian Airlines Logo
7:25 pm - 8:50 pm
FCO
-
STL
32h 25m
2 stops
$779Scandinavian Airlines
Wed, Aug 5 - Wed, Aug 19
British Airways Logo
9:31 am - 9:10 am
STL
-
FCO
16h 39m
1 stop
British Airways Logo
1:30 pm - 10:40 pm
FCO
-
STL
16h 10m
1 stop
$791British Airways
Mon, Sep 7 - Wed, Sep 23
Scandinavian Airlines Logo
3:42 pm - 6:35 pm
STL
-
FCO
19h 53m
2 stops
Scandinavian Airlines Logo
11:55 am - 11:37 pm
FCO
-
STL
42h 42m
2 stops
$813Scandinavian Airlines
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
12:10 pm - 9:15 am
STL
-
FCO
14h 05m
1 stop
Air Canada Logo
6:50 am - 6:42 pm
FCO
-
STL
18h 52m
2 stops
$817Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
12:10 pm - 11:45 am
STL
-
FCO
16h 35m
2 stops
Air Canada Logo
11:30 am - 6:42 pm
FCO
-
STL
14h 12m
1 stop
$825Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
1:13 pm - 10:20 am
STL
-
FCO
14h 07m
2 stops
Air Canada Logo
6:50 am - 6:42 pm
FCO
-
STL
18h 52m
2 stops
$826Air Canada
Wed, Aug 5 - Wed, Aug 19
Air Canada Logo
12:10 pm - 11:45 am
STL
-
FCO
16h 35m
2 stops
Air Canada Logo
2:20 pm - 2:02 pm
FCO
-
STL
30h 42m
2 stops
$834Air Canada
Tue, Aug 25 - Fri, Dec 11
British Airways Logo
9:35 pm - 8:05 pm
STL
-
FCO
15h 30m
1 stop
British Airways Logo
1:00 pm - 8:21 pm
FCO
-
STL
14h 21m
1 stop
$846British Airways
Tue, Aug 25 - Fri, Dec 11
Multiple Airlines Logo
9:35 pm - 8:05 pm
STL
-
FCO
15h 30m
1 stop
Multiple Airlines Logo
11:45 am - 11:59 pm
FCO
-
STL
19h 14m
2 stops
$858Multiple Airlines
Tue, Oct 6 - Thu, Oct 15
Multiple Airlines Logo
2:40 pm - 5:30 pm
STL
-
CIA
19h 50m
3 stops
Multiple Airlines Logo
9:45 pm - 2:00 pm
CIA
-
STL
23h 15m
2 stops
$1,356Multiple Airlines
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?

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 departing in September.

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

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, 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 is January, where tickets cost $442 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $921 and $718 respectively.

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

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, 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, you should book around 3 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$413
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from St. Louis to Rome Fiumicino Airport

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 flights from St. Louis to Rome

  • How do I get from Fiumicino International Airport to the city center?

    You will have several options when traveling from the airport to Rome. You can board a train that is located next to the arrival terminal. You can utilize the free shuttles to take you to the train station or take a walk to burn a few calories. The train departs every 15 minutes, which will help you save time on your trip. Additionally, if traveling on a budget, you can book a bus station at ground level, a walking distance from the arrival terminal which will take you to the bus station in the city.

  • Can I bring a pet on Delta Airlines flights from St Louis to Rome?

    Yes, small dogs and cats are permitted to the cabin for a one-way fee collected at the check-in. The pet size must fit in the available pet carrier under the feet in front of you. If your pet is large and exceeds the required size, it will be shipped as exceptional cargo.

  • Which nearby cities can be accessed from Fiumicino International Airport?

    Many cities around Fiumicino Airport are approximately one hour drive. If you love adventure, you can drive to Lanuvio, Zagarolo, and Genzano cities to enjoy the beautiful scenery of Italy. If you have extra time to stay in Italy, visit Rocca Priora and Sancesareo cities for a more satisfying experience.

  • What is the baggage policy on flights from St Louis to Rome with Turkish Airlines?

    Passengers will be allowed to board with one piece of cabin baggage per passenger that measures 9 by 15 by 21 in size and 17.6 lbs. If you are traveling in the business class category, you can carry one personal item bag measuring 15 by 12 by 6 in size.

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

    In the last 3 days, the lowest price for a flight from St. Louis to Rome was $413 for a one-way ticket and $779 for a round-trip.

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

    Yes, you’ll need a passport to travel to Rome from St. Louis.

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

    On your way to Rome, you’ll fly out from Lambert-St Louis. You’ll be landing in one of Rome’s 2 airports: Rome Ciampino or Rome Fiumicino.

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

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

    Chicago is the most popular layover city among KAYAK users traveling from St. Louis to Rome.

  • 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 $995 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 $884 and an overall rating of 7.8.

  • 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.

  • 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.

KAYAK’s top tips for finding a cheap flight from St. Louis to Rome

  • Ciampino (CIA) and Fiumicino (FCO) airports are the main airports in Rome. Fleets from various regions worldwide, including those flying from Lambert St Louis International Airport, are landed at either of the airports. Airlines such as Delta, KLM, Lufthansa, West-Jet, and Turkish Airlines are operated between St Louis and Rome.
  • Flights flying from Lambert St Louis International Airport (STL) will land at Fiumicino Airport. You will find it easy to navigate at Ciampino Airport as it has just one terminal for arrivals and departures. If you travel internationally, you will land at Leonardo Da Vinci International Airport in Fiumicino, which has two operating terminals, and you will arrive at terminal three. On arrival, you can take an outdoor bus at the ground level a few meters from the arrival terminal, which will drop you at the central station in Rome.
  • Delta Airlines offers passengers economy, premium economy, and business class services. All travelers will be served coffee during their journey. If you travel in premium economy class, you will have improved dining options and legroom. Business class travelers will be provided noise-reducing headsets and skin care products.
  • Turkish Airlines' premium economy section will offer adjustable toy seats for kids and amenity kits, including earplugs, lip balm, and socks, as an incentive if you travel with kids. If you board the business class, you will be privileged to get in-chair massage functions and a reading lamp.
  • Lufthansa Airlines is among the airlines operating between St Louis and Rome that have taken measures to reduce carbon emissions. The airline is determined to half its carbon emissions by 2030. Additionally, the airline is determined to utilize sustainable aviation fuel (SAF) and more fuel-efficient aircraft to meet sustainable environmental conservation goals.

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 8461 reviews
7.2Food
8.1Boarding
7.8Entertainment
8.5Crew
7.9Comfort
Airline reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

8.0 ExcellentMatthew, May 2026
OKC - ATL
Read more Delta reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

The crew was very attentive through out the flight. Seats were comfortable, nice flight bag with pillow and blanket. Food was okay, since it was a overnight flight seemed to go by fast.

The flight attendant on my side of business class seemed like a novice and did not provide good service. Otherwise the flight was good and the entertainment system was very good. No free WiFi.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

No food or entertainment for a short flight but satisfied with that.

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

Someone switched seats in business class so they could sit together and we were left apart (3). Very disappointing. Staff did nothing

Somone switched seats to sit near friend causing us to be disconnected (3) business class. Very disappointed. Staff did nothing.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

1st class seats NOT REALLY 1st class or business class but like premier economy. Should be listed as such or named something else. I have flown 1st class with other airlines and they are nothing like it at all.

The seats in Premier Economy were very comfortable. The food was better than average. The way British Airways handled our seating was atrocious.

Worst airline in the world. They downgraded me from business class to economy with no compensation.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Overall ok. Best part has always been the sundae dessert.

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

Information on your arrival and departure airports