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Flights from Chicago to Trieste

Find cheap airlines flights from Chicago to Trieste

You can choose from 1 airlines that fly from Chicago to Trieste, including Lufthansa, United Airlines has lowest fares on this route.
Lufthansa logo Lufthansa
Airlines are determined based on actual purchased flight tickets from Chicago to Trieste according to previous 12 months data from Trip.com.

Find flight deals from Chicago to Trieste for the next 3 months. Book one way flights from $519 or round trip flights from $970.

      • ORD 4:05 PM
        14h 50m
        1 stop
        TRS 1:55 PM
        Chicago - Trieste | Fri, Jul 31 | United Airlines
        TRS 2:50 PM
        27h 10m
        1 stop
        ORD 11:00 AM
        Trieste - Chicago | Fri, Aug 7 | Lufthansa
        $970 $1,639
        41% off
        41% off
        $1,639 $970
      • ORD 6:30 PM
        12h 25m
        1 stop
        TRS 1:55 PM
        Chicago - Trieste | Fri, Jul 31 | Lufthansa
        TRS 2:50 PM
        27h 10m
        1 stop
        ORD 11:00 AM
        Trieste - Chicago | Fri, Aug 7 | Lufthansa
        $1,029 $1,639
        37% off
        37% off
        $1,639 $1,029
      • ORD 6:30 PM
        20h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Mon, Jul 20 | Lufthansa
        TRS 2:40 PM
        12h 15m
        1 stop
        ORD 7:55 PM
        Trieste - Chicago | Mon, Jul 27 | Lufthansa
        $1,112 $1,639
        32% off
        32% off
        $1,639 $1,112
      • ORD 10:30 PM
        16h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Mon, Jul 20 | United Airlines
        TRS 6:15 AM
        15h 40m
        1 stop
        ORD 2:55 PM
        Trieste - Chicago | Mon, Jul 27 | Lufthansa
        $1,112
        32% off
        $1,639 $1,112
      • ORD 3:00 PM
        12h 25m
        1 stop
        TRS 10:25 AM
        Chicago - Trieste | Sat, Jul 18 | ITA Airways
        TRS 7:15 PM
        24h 55m
        1 stop
        ORD 1:10 PM
        Trieste - Chicago | Sat, Jul 25 | ITA Airways
        $1,136
        31% off
        $1,639 $1,136
      • ORD 3:00 PM
        12h 25m
        1 stop
        TRS 10:25 AM
        Chicago - Trieste | Fri, Jul 31 | ITA Airways
        TRS 6:35 AM
        13h 35m
        1 stop
        ORD 1:10 PM
        Trieste - Chicago | Fri, Aug 7 | ITA Airways
        $1,147
        30% off
        $1,639 $1,147
      • ORD 4:05 PM
        14h 40m
        1 stop
        TRS 1:45 PM
        Chicago - Trieste | Sat, Aug 8 | Lufthansa
        TRS 6:20 AM
        13h 35m
        1 stop
        ORD 12:55 PM
        Trieste - Chicago | Sat, Aug 15 | Lufthansa
        $1,161
        28% off
        $1,639 $1,161
      • ORD 3:45 PM
        11h 40m
        1 stop
        TRS 10:25 AM
        Chicago - Trieste | Sat, Aug 8 | United Airlines
        TRS 6:20 AM
        15h 35m
        1 stop
        ORD 2:55 PM
        Trieste - Chicago | Sat, Aug 15 | Lufthansa
        $1,176
        28% off
        $1,639 $1,176
      • ORD 10:30 PM
        16h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Wed, Jul 15 | Lufthansa
        TRS 6:15 AM
        20h 40m
        1 stop
        ORD 7:55 PM
        Trieste - Chicago | Wed, Jul 22 | Lufthansa
        $1,222
        25% off
        $1,639 $1,222
      • ORD 4:05 PM
        14h 40m
        1 stop
        TRS 1:45 PM
        Chicago - Trieste | Sat, Jul 18 | Lufthansa
        TRS 6:20 AM
        13h 35m
        1 stop
        ORD 12:55 PM
        Trieste - Chicago | Sat, Jul 25 | Lufthansa
        $1,245
        24% off
        $1,639 $1,245
      • CHI 1:00 PM
        17h 25m
        1 stop
        TRS 2:00 PM
        Chicago - Trieste | Fri, Jun 12 | Normal Airline
        TRS 3:00 PM
        6h
        Nonstop
        CHI 4:00 PM
        Trieste - Chicago | Sun, Jun 14 | Normal Airline
        Find more flights
        Find more flights
      • ORD 4:05 PM
        14h 55m
        1 stop
        TRS 2:00 PM
        Chicago - Trieste | Wed, Jul 1 | United Airlines
        $519 $861
        40% off
        40% off
        $861 $519
      • ORD 10:30 PM
        16h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Sat, Aug 8 | United Airlines
        $551 $861
        36% off
        36% off
        $861 $551
      • ORD 4:05 PM
        14h 55m
        1 stop
        TRS 2:00 PM
        Chicago - Trieste | Sat, Aug 8 | Lufthansa
        $567 $861
        34% off
        34% off
        $861 $567
      • ORD 10:30 PM
        16h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Sat, Jul 18 | United Airlines
        $578
        33% off
        $861 $578
      • ORD 10:30 PM
        16h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Sat, Jul 4 | United Airlines
        $578
        33% off
        $861 $578
      • ORD 10:30 PM
        16h 45m
        1 stop
        TRS 10:15 PM
        Chicago - Trieste | Thu, Jul 2 | United Airlines
        $591
        31% off
        $861 $591
      • ORD 4:05 PM
        14h 50m
        1 stop
        TRS 1:55 PM
        Chicago - Trieste | Fri, Jul 3 | United Airlines
        $591
        31% off
        $861 $591
      • ORD 6:30 PM
        12h 30m
        1 stop
        TRS 2:00 PM
        Chicago - Trieste | Sat, Jul 18 | Lufthansa
        $625
        27% off
        $861 $625
      • ORD 3:00 PM
        12h 25m
        1 stop
        TRS 10:25 AM
        Chicago - Trieste | Sun, Aug 2 | ITA Airways
        $632
        27% off
        $861 $632
      • ORD 4:55 PM
        23h
        1 stop
        TRS 10:55 PM
        Chicago - Trieste | Thu, Jun 25 | American Airlines
        $654
        24% off
        $861 $654
      • CHI 1:00 PM
        17h 25m
        1 stop
        TRS 2:00 PM
        Chicago - Trieste | Fri, Jun 12 | Normal Airline
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Displayed flight fares from Chicago to Trieste are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Chicago to Trieste

The distance between Chicago and Trieste is approximately 7,532.65 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight price$519
Cheapest round-trip ticket price$970
Off-season for travelOctober
Peak season for travelJuly
Flight distance7,532.65 km
Popular airlineLufthansa
Flight statistics for the Chicago–Trieste route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Chicago to Trieste (CHI-TRS)?

    Based on Trip.com data, United Airlines offers one-way fares as low as $519 on Cheapest nonstop routes (e.g. ORD to TRS on Wed, Jul 1), while United Airlines offers Cheapest nonstop round-trips from $970 departing on Fri, Jul 31 and returning on Fri, Aug 7.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to Trieste is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Chicago to Trieste, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Jul 1, with one-way flights priced at just $519.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Trieste travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Chicago to Trieste is October, when demand for travel is lower.
  • After crunching the numbers on our June flight calendar, it's currently cheapest to fly from Chicago to Trieste on June 25, 2026 with American Airlines, with prices starting at $654.
  • The time difference between Trieste and Chicago is 7h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.