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

Cheapflights users have booked flights from Chicago to Trieste round-trip from $873. Other airlines that can offer you cheap pricing are Turkish Airlines, from $1,114, and TAP AIR PORTUGAL, from $1,152.

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 $542 on ITA Airways. Other airlines that offer cheap prices include Lufthansa from $749 and Delta from $754 one-way.

What is the cheapest day to fly from Chicago to Trieste?

Travelers seeking maximum savings on their Chicago to Trieste flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Chicago to Trieste?

It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest time of day to fly from CHI to TRS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Trieste as you normally would.

Most accurate provider : When it comes to deals on Chicago-Trieste flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago-Trieste flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

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.

$416+ Flights from Chicago to Trieste

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1. Tell us where you want to go

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Cheap flight deals from Chicago to Trieste

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$811 (Mytrip)
One-way from	$542 (Cheapflightsfares)

Provider with most accurate pricing for Chicago (CHI)-Trieste Ronchi dei Legionari flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-Trieste Ronchi dei Legionari flights.

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From Chicago (CHI) to Trieste Ronchi dei Legionari

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One-way flight from Chicago (CHI) to Trieste Ronchi dei Legionari

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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 25, 2025.

Sun 8/107:25 pmORD - TRS

2 stops16h 05mIcelandair

Mon 8/1811:15 amTRS - ORD

2 stops38h 00mIcelandair

Deal found 4/24

$799

Thu 5/810:40 amORD - TRS

2 stops21h 20mMultiple Airlines

Sun 5/1110:50 pmTRS - ORD

2 stops28h 22mMultiple Airlines

Deal found 4/24

$811

Sun 8/106:00 pmORD - TRS

2 stops21h 55mTAP AIR PORTUGAL

Sun 8/1711:15 amTRS - ORD

2 stops36h 25mTAP AIR PORTUGAL

Deal found 4/24

$830

Tue 9/2311:25 amORD - TRS

2 stops24h 10mTurkish Airlines

Tue 9/306:35 amTRS - ORD

2 stops34h 05mTurkish Airlines

Deal found 4/25

$834

Wed 5/71:30 pmORD - TRS

2 stops37h 55mITA Airways

Sat 5/103:15 pmTRS - ORD

1 stop28h 55mITA Airways

Deal found 4/23

$873

Tue 9/2310:30 pmORD - TRS

1 stop17h 05mLufthansa

Tue 9/306:30 amTRS - ORD

1 stop13h 25mLufthansa

Deal found 4/25

$1,061

Tue 7/87:00 amORD - TRS

2 stops20h 25mDelta

Fri 7/186:35 amTRS - ORD

2 stops19h 28mDelta

Deal found 4/25

$1,279

Mon 5/261:55 pmMDW - TRS

2 stops37h 30mDelta

Wed 6/46:35 amTRS - MDW

2 stops21h 52mDelta

Deal found 4/24

$1,490

Best flights from Chicago to Trieste
Discover carefully curated flight deals from Chicago to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 25, 2025.

Thu 5/810:40 amORD - TRS

2 stops21h 20mMultiple Airlines

Sun 5/1110:50 pmTRS - ORD

2 stops28h 22mMultiple Airlines

Deal found 4/24

$811

Wed 5/71:30 pmORD - TRS

2 stops37h 55mITA Airways

Sat 5/103:15 pmTRS - ORD

1 stop28h 55mITA Airways

Deal found 4/23

$873

Tue 7/87:50 pmORD - TRS

2 stops39h 40mTurkish Airlines

Sat 7/1911:15 amTRS - ORD

2 stops29h 25mTurkish Airlines

Deal found 4/25

$1,114

Sun 7/136:00 pmORD - TRS

2 stops21h 55mTAP AIR PORTUGAL

Thu 7/173:15 pmTRS - ORD

2 stops31h 55mTAP AIR PORTUGAL

Deal found 4/25

$1,152

Sun 6/810:30 pmORD - TRS

1 stop17h 05mLufthansa

Sun 6/156:30 amTRS - ORD

1 stop20h 25mLufthansa

Deal found 4/24

$1,238

Tue 7/87:00 amORD - TRS

2 stops20h 25mDelta

Fri 7/186:35 amTRS - ORD

2 stops19h 28mDelta

Deal found 4/25

$1,279

Tue 5/277:25 pmORD - TRS

2 stops16h 05mIcelandair

Thu 6/511:15 amTRS - ORD

2 stops17h 00mIcelandair

Deal found 4/24

$1,325

Sun 6/84:20 pmORD - TRS

2 stops35h 05mAustrian Airlines

Sun 6/157:15 pmTRS - ORD

2 stops49h 05mAustrian Airlines

Deal found 4/24

$1,589

Mon 5/261:55 pmMDW - TRS

2 stops37h 30mDelta

Wed 6/46:35 amTRS - MDW

2 stops21h 52mDelta

Deal found 4/24

$1,490

Last-minute flights from Chicago to Trieste
Discover last-minute flight deals from Chicago to Trieste. Data last updated April 25, 2025 and is based on user searches.

Wed 5/71:30 pmORD - TRS

2 stops37h 55mITA Airways

Sat 5/103:15 pmTRS - ORD

1 stop28h 55mITA Airways

Deal found 4/23

$873

Thu 5/810:40 amORD - TRS

2 stops21h 20mMultiple Airlines

Sun 5/1110:50 pmTRS - ORD

2 stops28h 22mMultiple Airlines

Deal found 4/24

$811

Thu 5/84:20 pmORD - TRS

2 stops47h 35mAustrian Airlines

Sun 5/117:15 pmTRS - ORD

2 stops49h 05mAustrian Airlines

Deal found 4/25

$2,428

Sun 5/256:00 pmORD - TRS

2 stops37h 30mTAP AIR PORTUGAL

Tue 6/106:35 amTRS - ORD

2 stops40h 35mTAP AIR PORTUGAL

Deal found 4/24

$1,402

Mon 5/265:40 pmORD - TRS

2 stops33h 45mDelta

Fri 6/66:35 amTRS - ORD

2 stops21h 11mDelta

Deal found 4/24

$1,490

Mon 5/261:55 pmMDW - TRS

2 stops37h 30mDelta

Wed 6/46:35 amTRS - MDW

2 stops21h 52mDelta

Deal found 4/24

$1,490

Mon 5/264:00 pmORD - TRS

1 stop15h 05mLufthansa

Fri 6/62:45 pmTRS - ORD

1 stop12h 10mLufthansa

Deal found 4/24

$1,492

Tue 5/277:25 pmORD - TRS

2 stops16h 05mIcelandair

Thu 6/511:15 amTRS - ORD

2 stops17h 00mIcelandair

Deal found 4/24

$1,325

Tue 5/277:50 pmORD - TRS

2 stops39h 40mTurkish Airlines

Sat 6/711:15 amTRS - ORD

2 stops53h 25mTurkish Airlines

Deal found 4/24

$1,326

One-way flights from Chicago to Trieste
Search for one-way flight options from Chicago to Trieste. Find affordable one-way fares based on user searches. Data last updated April 25, 2025.

Tue 7/17:00 amORD - TRS

2 stops28h 30mITA Airways

Deal found 4/25

$542

Tue 7/15:20 pmMDW - TRS

3 stops19h 25mMultiple Airlines

Deal found 4/25

$612

Tue 7/110:30 pmORD - TRS

1 stop17h 05mLufthansa

Deal found 4/25

$749

Tue 7/112:44 pmMDW - TRS

2 stops18h 41mDelta

Deal found 4/25

$754

Sun 6/81:09 pmMDW - TRS

2 stops18h 21mKLM

Deal found 4/24

$1,077

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 8/10

7:25 pm-6:30 pm

2 stops16h 05m

Trieste Ronchi dei Legionari

Mon 8/18

11:15 am-6:15 pm

2 stops38h 00m

$799

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/8

10:40 am-3:00 pm

2 stops21h 20m

Trieste Ronchi dei Legionari

Sun 5/11

10:50 pm-8:12 pm

2 stops28h 22m

$811

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 8/10

6:00 pm-10:55 pm

2 stops21h 55m

Trieste Ronchi dei Legionari

Sun 8/17

11:15 am-4:40 pm

2 stops36h 25m

$830

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 9/23

11:25 am-6:35 pm

2 stops24h 10m

Trieste Ronchi dei Legionari

Tue 9/30

6:35 am-9:40 am

2 stops34h 05m

$834

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 5/7

1:30 pm-10:25 am

2 stops37h 55m

Trieste Ronchi dei Legionari

Sat 5/10

3:15 pm-1:10 pm

1 stop28h 55m

$873

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 9/23

10:30 pm-10:35 pm

1 stop17h 05m

Trieste Ronchi dei Legionari

Tue 9/30

6:30 am-12:55 pm

1 stop13h 25m

$1,061

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 7/8

7:00 am-10:25 am

2 stops20h 25m

Trieste Ronchi dei Legionari

Fri 7/18

6:35 am-7:03 pm

2 stops19h 28m

$1,279

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Mon 5/26

1:55 pm-10:25 am

2 stops37h 30m

Trieste Ronchi dei Legionari

Wed 6/4

6:35 am-9:27 pm

2 stops21h 52m

$1,490

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 7/1

10:46 am-7:45 pm

3 stops25h 59m

$416

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 7/1

7:00 am-6:30 pm

2 stops28h 30m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 14 results

Compare providers for flights from Chicago to Trieste

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.

Provider	Price Accuracy	Trust Score*
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago-Trieste flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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

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

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

Delta

8.0

Very good

7,920 reviews

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

7,920 reviews

Delta

8.0

Very good

7,920 reviews

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

1,333 reviews

Delta

8.0

Very good

7,920 reviews

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

780 reviews

Delta

8.0

Very good

7,920 reviews

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.

Turkish Airlines

7.3

Good

3,776 reviews

Delta

8.0

Very good

7,920 reviews

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

1,846 reviews

Delta

8.0

Very good

7,920 reviews

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

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 $873. Other airlines that can offer you cheap pricing are Turkish Airlines, from $1,114, and TAP AIR PORTUGAL, from $1,152.
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 $542 on ITA Airways. Other airlines that offer cheap prices include Lufthansa from $749 and Delta from $754 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

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Alternative routes for Chicago to Trieste

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Moline to Vicenza flights

Top airline flying from Chicago to Trieste

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest$540	Average$1,064	FlexibilityNo cancel fee	On-time81%

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$416+ 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.

Find cheap flights from Chicago to Trieste with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Chicago to Trieste

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Find flight deals from Chicago to Trieste

Cheapest flights from Chicago to TriesteExplore 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 25, 2025.

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 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Trieste that are best for you.

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.

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.

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.

Temperature in Trieste by month

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

Reviews of airlines servicing Trieste

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?

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

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

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

How can I find direct flights from Chicago to Trieste?

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

Traveling to a place near Chicago?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Chicago to Trieste

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Chicago to Trieste

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Book with Flexibility

Travel Smart

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 25, 2025.