HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Trieste

$541+ Cheap flights from Chicago (CHI) to Trieste (TRS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — TRS
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Trieste with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chicago to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$815
(Gurufare)

One-way from

$541
(Cheapflightsfares)
Provider with most accurate pricing for Chicago (CHI)-Trieste Ronchi dei Legionari flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Trieste Ronchi dei Legionari flights.
Search Deals
From Chicago (CHI) to Trieste Ronchi dei Legionari
Search Deals
One-way flight from Chicago (CHI) to Trieste Ronchi dei Legionari
Search Deals

Find flight deals from Chicago to Trieste

Cheapest flights from Chicago to Trieste
Explore the most affordable flight options available from Chicago to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

This Gurufare deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:00 pmORD - TRS
1 stop15h 05mLufthansa
Tue 9/306:30 amTRS - ORD
1 stop20h 25mLufthansa
Deal found 4/3$815
This Condor deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:15 amORD - TRS
2 stops24h 50mMultiple Airlines
Thu 5/226:30 amTRS - ORD
2 stops19h 06mMultiple Airlines
Deal found 4/2$836
This ITA Airways deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/21:50 pmORD - TRS
2 stops17h 40mITA Airways
Fri 5/96:35 amTRS - ORD
1 stop13h 35mITA Airways
Deal found 4/2$957
This Gotogate deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/54:55 pmORD - TRS
2 stops38h 35mTAP AIR PORTUGAL
Wed 6/253:15 pmTRS - ORD
2 stops31h 55mTAP AIR PORTUGAL
Deal found 4/2$1,344
This Gurufare deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/207:25 pmORD - TRS
2 stops16h 05mIcelandair
Wed 7/211:15 amTRS - ORD
2 stops17h 00mIcelandair
Deal found 4/2$1,482
This Austrian Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/154:20 pmORD - TRS
2 stops23h 35mAustrian Airlines
Wed 5/287:15 pmTRS - ORD
2 stops25h 05mAustrian Airlines
Deal found 4/2$1,688
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1510:25 amMDW - TRS
2 stops21h 00mDelta
Thu 5/226:35 amTRS - MDW
2 stops18h 01mDelta
Deal found 4/2$1,722

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago to Trieste that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2025.
Use the filters below to find and compare flights from Chicago to Trieste that are best for you.

Fly from

Chicago

Fly to

Trieste

Route

Depart

Return

Price

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 9/23

4:00 pm-2:05 pm

1 stop15h 05m

Trieste Ronchi dei Legionari

Tue 9/30

6:30 am-7:55 pm

1 stop20h 25m

$815

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/15

6:15 am-2:05 pm

2 stops24h 50m

Trieste Ronchi dei Legionari

Thu 5/22

6:30 am-6:36 pm

2 stops19h 06m

$836

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 5/2

1:50 pm-2:30 pm

2 stops17h 40m

Trieste Ronchi dei Legionari

Fri 5/9

6:35 am-1:10 pm

1 stop13h 35m

$957

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/5

4:55 pm-2:30 pm

2 stops38h 35m

Trieste Ronchi dei Legionari

Wed 6/25

3:15 pm-4:10 pm

2 stops31h 55m

$1,344

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 6/20

7:25 pm-6:30 pm

2 stops16h 05m

Trieste Ronchi dei Legionari

Wed 7/2

11:15 am-9:15 pm

2 stops17h 00m

$1,482

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/15

4:20 pm-10:55 pm

2 stops23h 35m

Trieste Ronchi dei Legionari

Wed 5/28

7:15 pm-1:20 pm

2 stops25h 05m

$1,688

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Thu 5/15

10:25 am-2:25 pm

2 stops21h 00m

Trieste Ronchi dei Legionari

Thu 5/22

6:35 am-5:36 pm

2 stops18h 01m

$1,722

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 7/1

7:00 am-6:30 pm

2 stops28h 30m

$541

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 7/1

4:00 pm-2:05 pm

1 stop15h 05m

$611

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Tue 7/1

1:09 pm-2:25 pm

2 stops18h 16m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 11 results
1
2

Compare providers for flights from Chicago to Trieste

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Trieste in April.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Trieste flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Trieste flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Trieste flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Trieste flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Trieste

Rainfall in Trieste by month

Plan your trip to Trieste by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Trieste ranges from 2.4 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit Trieste when rainfall is around 2.4 in.

Temperature in Trieste by month

Plan your trip to Trieste by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Trieste, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trieste. Reviews last updated April 3, 2025.
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
771 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
TAP AIR PORTUGAL
7.1
Good
1,833 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Icelandair
7.0
Good
476 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Trieste. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Trieste from Chicago?

    Trieste Ronchi dei Legionari (TRS) is the airport you will fly into if you book a flight from Chicago to Trieste. You should not have trouble finding flights to Ronchi dei Legionari from Chicago; the airport handles an average of 0 inbound flights from Chicago per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Trieste airport from Chicago. It is only a 18.2 mi journey from Ronchi dei Legionari (TRS) to Trieste’s city center.

  • What are the cheapest airlines flying from Chicago to Trieste round-trip?

    Cheapflights users have booked flights from Chicago to Trieste round-trip from $815. Other airlines that can offer you cheap pricing are ITA Airways, from $957, and TAP AIR PORTUGAL, from $1,344.

  • What are the cheapest airlines to fly from Chicago to Trieste one-way?

    One-way options have recently been found by users for as low as $541 on ITA Airways. Other airlines that offer cheap prices include Lufthansa from $611 and Delta from $853 one-way.

  • Can I find deals for flights from Chicago to Trieste that include hotel bookings?

    Yes. In addition to deals on Chicago to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Trieste?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Trieste.

  • Can I find deals for business class flights from Chicago to Trieste?

    Yes. Cheapflights offers flight deals from Chicago to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Udine

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Trieste

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Vicenza flights
Midway to Vicenza flights
St. Louis to Vicenza flights
O'Hare Intl to Trieste flights
Dubuque to Vicenza flights
Moline to Vicenza flights

Top airline flying from Chicago to Trieste

Discover the top airline that operate flights from Chicago to Trieste. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$739Average$1,064FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.