STL - ROM

$362 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 7/26. 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

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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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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

Tue, Nov 11 - Wed, Nov 19
United Airlines Logo
11:49 am - 7:55 amSTL-FCO
13h 06m1 stop
United Airlines Logo
1:15 pm - 2:25 pmFCO-STL
32h 10m2 stops
$483United Airlines
Find Deal
Tue, Nov 11 - Wed, Nov 19
Air Canada Logo
4:05 pm - 8:55 amSTL-FCO
33h 50m2 stops
Air Canada Logo
1:15 pm - 2:25 pmFCO-STL
32h 10m2 stops
$485Air Canada
Find Deal
Sun, Nov 9 - Fri, Nov 21
United Airlines Logo
6:30 am - 7:45 amSTL-FCO
18h 15m1 stop
United Airlines Logo
7:05 am - 1:55 pmFCO-STL
13h 50m1 stop
$500United Airlines
Find Deal
Wed, Oct 22 - Fri, Nov 7
Air Canada Logo
9:15 am - 9:15 amSTL-FCO
17h 00m2 stops
Air Canada Logo
1:15 pm - 3:29 pmFCO-STL
33h 14m2 stops
$505Air Canada
Find Deal
Wed, Nov 12 - Tue, Nov 18
Delta Logo
6:45 am - 7:05 amSTL-FCO
17h 20m2 stops
Delta Logo
11:05 am - 9:59 pmFCO-STL
17h 54m2 stops
$511Delta
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Tue, Nov 11 - Mon, Nov 17
Delta Logo
1:30 pm - 10:30 amSTL-FCO
14h 00m1 stop
Delta Logo
12:40 pm - 8:49 pmFCO-STL
15h 09m1 stop
$556Delta
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Mon, Oct 13 - Mon, Oct 20
British Airways Logo
10:36 am - 8:20 amSTL-FCO
14h 44m1 stop
British Airways Logo
6:00 pm - 4:23 pmFCO-STL
29h 23m2 stops
$559British Airways
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Mon, Aug 18 - Fri, Sep 12
British Airways Logo
1:42 pm - 9:10 amSTL-FCO
12h 28m1 stop
British Airways Logo
10:20 am - 9:06 pmFCO-STL
17h 46m1 stop
$561British Airways
Find Deal
Sat, Aug 16 - Fri, Sep 12
Iberia Logo
7:44 pm - 9:10 amSTL-FCO
30h 26m1 stop
Iberia Logo
1:10 pm - 9:06 pmFCO-STL
14h 56m1 stop
$566Iberia
Find Deal
Sat, Aug 16 - Mon, Sep 8
Iberia Logo
7:44 pm - 9:10 amSTL-FCO
30h 26m1 stop
Iberia Logo
8:25 pm - 8:15 pmFCO-STL
30h 50m2 stops
$585Iberia
Find Deal
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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.

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 clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Rome on a Tuesday and more expensive on a Sunday. On your return trip to St. Louis, you should consider flying back on a Thursday, and avoid Tuesdays for better deals.

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 February, where tickets cost $741 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,618 and $1,357 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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$362
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 27% 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 $362 for a one-way ticket and $483 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?

    Star Alliance, SkyTeam, 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 $1,156 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,156 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.
8.0
DeltaOverall score based on 7956 reviews
8.2Boarding
7.9Entertainment
8.5Crew
7.9Comfort
7.3Food
Airline reviews

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

2.0 MediocreDana, Jul 2025JFK - DEN
Read more Delta reviews

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

this crew didn't care much. bumping carts into seats more times than i care to remember

Very late arrival at PWM. Late jet getting to ATL. Equipment problem with aircraft - could not get enough water onto plane., Another delay getting FAA approval for flight with bottled H2O. Not the crew’s problem.

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

At first, we were on the runway for about an hour, literally. The Captain did explain that the Control Tower just had a change shift (sounds like an unrealistic excuse) and then that we had to change a runway. A regular economy seat is made for 12 yo twiggy. I understand Delta wants to push for an upgrade, but after sitting in a Comfort seat and in First class. I would say First class is not worthy of my money. The landing was delayed because of the weather in NYC, I don't hold that against Delta, of course. The Captain did alert us to that upon takeoff in Vegas and again as we reached NY.

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

Great. Very smooth. Plenty of information. However, wish they would give out a menu in advance of making a dinner choice like other international airlines. The flight attendant says chicken or pasta and there are details about ingredients or spices requiring the passenger to ask which requires the flight attendant to answer many times. So easy to solve this problem. P

I'm a tall guy and even the seats with more leg room were not as comfortable as I had hoped.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

The food should improve! And The flight should leave on time and not make the traveler wait.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

A little bit more leg room in premium economy. I am 6’4”.

Overall it was good. I missed my connection but I was put on another flight.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Flight was delayed again and again ultimately almost three hours getting us to our location at close to midnight by the time we got in and out of airport to destination. I had taken time off work to enjoy an evening at destination and that was now wasted

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

United had no (zero) record of our flight. It took over an hour of us standing in line with surly employee while others waited to get resolved. I have never experienced such poor service and poor empathy.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Aircraft had technical issues. After 3 hours of trying to resolve, flight was cancelled. Was booked on a flight leaving 12 hours after intended departure. Now on 4 flights instead of 2 and a day late to my destination.

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

I am very tall. All airline seats are a bit uncomfortable.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Boarding was 2 1/2 late no explanation Captain said he did not know why, but he rested at home for an extra couple of hours. Food was edible, Nothing more.

I liked the comfort of the plane. It was unexpected from past experiences.

BEWARE!!! Iberia changes your seats at random. I paid for a window seat and they changed it to one in the middle aisle resting against the bathroom- can’t lean back + hear every flush. This on a 11 hour flight.. There were families that were broken up with separate seats all over the plane. Lots of upset passengers showing their seat confirmation to the besieged and helpless airline steward. Also, the gluten free meal was tasteless.

Chair is very high. Your feet cannot touch the ground for 8 hours flight. It was a nightmare. Food was bad.

ground crew and check-in was pathetic - insisted on charging me for luggage even though the ticket said it was already included. They also accidentally sent my luggage through without a luggage tag and had to retrieve it. Generally, it was like a bad movie.

Moved the flight an hour later, were not reliable about confirmation, website didn't work, no gate information, boarding was a mad house. Flight itself was fine and short. Organization needs work.

The app on phone and the online check in is not good, it would not give me the option of Spain or Madrid City in the drop down menu and I couldn't move forward with online check in.

Flight was delayed 3 hours and 15 minutes. The delay caused me to miss my tour group due to arriving late.

As always a terrible experience. AA stole a day from my vacation days planned to be spent with my Family. Response: delays related to weather issues.

It was a wonderful experience with great food, great staff, and no difficulties boarding!

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