App
Help
SGD
Find Bookings
Trip.com
>
Flights
>
United States
>
Missouri
>
Flights to St. Louis
>
Cheap Flights from Trieste to St. Louis
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap Flights from Trieste to St. Louis starting at S$ 1,115

Whether you’re going for a one-way or round-trip to St. Louis, we’ve got you covered! Check out these different flight options from Trieste below.

  • Round-trip
      • TRS14:40
        27h 37m
        2 stops
        STL11:17
        Wed, Feb 26|Trieste - St. Louis|Lufthansa
        STL07:05
        32h 40m
        2 stops
        TRS22:45
        Wed, Mar 5|St. Louis - Trieste|United Airlines
        S$ 1,115S$ 8,277
        87% OFF
        87% OFF
        S$ 8,277S$ 1,115

        Fly from Trieste to St. Louis on Wed, Feb 26-Wed, Mar 5 with Lufthansa. One-way connecting flights with Lufthansa depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,115 including taxes and charges.

      • TRS14:40
        39h 52m
        2 stops
        STL23:32
        Wed, Feb 26|Trieste - St. Louis|Air Dolomiti
        STL07:05
        32h 40m
        2 stops
        TRS22:45
        Wed, Mar 5|St. Louis - Trieste|United Airlines
        S$ 1,133S$ 8,277
        86% OFF
        86% OFF
        S$ 8,277S$ 1,133

        Fly from Trieste to St. Louis on Wed, Feb 26-Wed, Mar 5 with Air Dolomiti. One-way connecting flights with Air Dolomiti depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,133 including taxes and charges.

      • TRS06:35
        23h 57m
        2 stops
        STL23:32
        Wed, Feb 26|Trieste - St. Louis|ITA Airways
        STL17:36
        42h 9m
        2 stops
        TRS18:45
        Wed, Mar 5|St. Louis - Trieste|Lufthansa
        S$ 1,245S$ 8,277
        85% OFF
        85% OFF
        S$ 8,277S$ 1,245

        Fly from Trieste to St. Louis on Wed, Feb 26-Wed, Mar 5 with ITA Airways. One-way connecting flights with ITA Airways depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,245 including taxes and charges.

      • TRS06:35
        40h 8m
        2 stops
        STL15:43
        Fri, Feb 7|Trieste - St. Louis|Air France
        STL19:07
        44h 48m
        2 stops
        TRS22:55
        Fri, Feb 14|St. Louis - Trieste|Air France
        S$ 1,304
        S$ 1,304

        Fly from Trieste to St. Louis on Fri, Feb 7-Fri, Feb 14 with Air France. One-way connecting flights with Air France depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,304 including taxes and charges.

      • TRS06:35
        24h 1m
        2 stops
        STL23:36
        Fri, Feb 7|Trieste - St. Louis|KLM
        STL19:07
        36h 23m
        2 stops
        TRS14:30
        Fri, Feb 14|St. Louis - Trieste|KLM
        S$ 1,304
        S$ 1,304

        Fly from Trieste to St. Louis on Fri, Feb 7-Fri, Feb 14 with KLM. One-way connecting flights with KLM depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,304 including taxes and charges.

      • TRS19:30
        47h 16m
        2 stops
        STL11:46
        Fri, Feb 7|Trieste - St. Louis|ITA Airways
        STL19:07
        44h 48m
        2 stops
        TRS22:55
        Fri, Feb 14|St. Louis - Trieste|KLM
        S$ 1,308
        S$ 1,308

        Fly from Trieste to St. Louis on Fri, Feb 7-Fri, Feb 14 with ITA Airways. One-way connecting flights with ITA Airways depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,308 including taxes and charges.

      • TRS17:36
        30h 46m
        2 stops
        STL17:22
        Fri, Feb 7|Trieste - St. Louis|Accesrail And Partner Railways
        STL17:36
        37h 9m
        2 stops
        TRS13:45
        Fri, Feb 14|St. Louis - Trieste|Lufthansa
        S$ 1,460
        S$ 1,460

        Fly from Trieste to St. Louis on Fri, Feb 7-Fri, Feb 14 with Accesrail And Partner Railways. One-way connecting flights with Accesrail And Partner Railways depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 1,460 including taxes and charges.

      • TRS06:35
        24h 1m
        2 stops
        STL23:36
        Fri, Feb 7|Trieste - St. Louis|Delta Air Lines
        STL12:52
        18h 38m
        2 stops
        TRS14:30
        Fri, Feb 14|St. Louis - Trieste|KLM
        S$ 2,136
        S$ 2,136

        Fly from Trieste to St. Louis on Fri, Feb 7-Fri, Feb 14 with Delta Air Lines. One-way connecting flights with Delta Air Lines depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 2,136 including taxes and charges.

      • TRS06:35
        23h 55m
        2 stops
        STL23:30
        Fri, Feb 7|Trieste - St. Louis|Royal Air Maroc
        STL15:45
        20h
        2 stops
        TRS18:45
        Fri, Feb 14|St. Louis - Trieste|Lufthansa
        S$ 6,042
        S$ 6,042

        Fly from Trieste to St. Louis on Fri, Feb 7-Fri, Feb 14 with Royal Air Maroc. One-way connecting flights with Royal Air Maroc depart Trieste Airport and arrive St. Louis Lambert International Airport starting at S$ 6,042 including taxes and charges.

      • TRS01:00 pm
        3h 5m
        Nonstop
        STL02:00 pm
        Sun, Feb 9|Trieste - St. Louis|Lufthansa
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Trieste to St. Louis Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. AF9860

    Air France

    06:35

    TRS

    1.2h

    07:45

    FCO

    SMTWTFS
    Search

  2. AF3579

    Air France

    11:35

    FCO

    11.1h

    16:40

    ATL

    S-T-TFS

  3. AF5994

    Air France

    15:28

    ATL

    1.7h

    16:12

    STL

    SMTWTFS

  4. DL6657

    Delta Air Lines

    06:35

    TRS

    1.2h

    07:45

    FCO

    SMTWTFS
    Search

  5. DL067

    Delta Air Lines

    11:35

    FCO

    11.1h

    16:40

    ATL

    S-T-TFS

  6. DL1403

    Delta Air Lines

    22:55

    ATL

    1.8h

    23:40

    STL

    SMTWTFS

  7. KL3407

    KLM

    06:35

    TRS

    1.2h

    07:45

    FCO

    SMTWTFS
    Search

  8. KL6000

    KLM

    12:45

    FCO

    11.2h

    17:55

    ATL

    S-T-TFS

  9. KL5566

    KLM

    22:55

    ATL

    1.7h

    23:38

    STL

    SMTWTFS

  10. AZ1356

    ITA Airways

    06:35

    TRS

    1.2h

    07:45

    FCO

    SMTWTFS
    Search

  11. LH7617

    Lufthansa

    11:00

    FCO

    9.5h

    14:30

    EWR

    SMTWTFS

  12. LH7662

    Lufthansa

    21:31

    EWR

    3.3h

    23:46

    STL

    SMTWTFS

  13. AT9181

    Royal Air Maroc

    06:35

    TRS

    1.2h

    07:45

    FCO

    SMTWTFS
    Search

  14. LH7617

    Lufthansa

    11:00

    FCO

    9.5h

    14:30

    EWR

    SMTWTFS

  15. UA3547

    United Airlines

    21:47

    EWR

    3.0h

    23:50

    STL

    SMTWT-S

  16. EN8819

    Air Dolomiti

    14:45

    TRS

    1.5h

    16:15

    FRA

    -M-W--S
    Search

  17. UA961

    United Airlines

    11:10

    FRA

    8.5h

    13:40

    EWR

    SMTWTFS

  18. UA3547

    United Airlines

    21:47

    EWR

    3.0h

    23:50

    STL

    SMTWT-S

  19. LH9571

    Lufthansa

    14:45

    TRS

    1.5h

    16:15

    FRA

    -M-W--S
    Search

  20. LH404

    Lufthansa

    17:15

    FRA

    8.8h

    20:05

    JFK

    S-T-TF-

  21. UA3610

    United Airlines

    09:01

    EWR

    3.1h

    11:08

    STL

    SMTWTFS

  22. 9B7475

    Accesrail And Partner Railways

    17:36

    TRS

    5.7h

    23:16

    MXP

    SMTWT-S
    Search

  23. UA018

    United Airlines

    09:45

    MXP

    8.8h

    12:35

    EWR

    SMTWTFS

  24. UA3719

    United Airlines

    15:46

    EWR

    3.0h

    17:45

    STL

    SMTWTFS

  25. AZ1364

    ITA Airways

    19:30

    TRS

    1.2h

    20:40

    FCO

    SMTWTFS
    Search

  26. DL067

    Delta Air Lines

    11:35

    FCO

    11.1h

    16:40

    ATL

    S-T-TFS

  27. DL566

    Delta Air Lines

    11:20

    ATL

    1.8h

    12:09

    STL

    SMTWTFS
Find more flights and airlines

Cheapest time to fly from Trieste to St. Louis

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to St. Louis from Trieste have changed and are set to move below.

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When to buy flight tickets from Trieste (TRS) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Trieste to St. Louis based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much is a flight from Trieste (TRS) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around S$ 1,614.

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St.Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.

  • How many airports in St. Louis?

    There are 1 airports near St. Louis: St.Louis Lambert International Airport.

How to find a cheap flight from Trieste to St. Louis

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Find cheapest flight ticket from Trieste to St. Louis

Off-season for travelDecember
Peak season for travelNovember
Flight distance7,938.37km
Popular airlineAccesrail And Partner Railways

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd. Travel License No. 02943