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$603+ Cheap flights from Trieste (TRS) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — ORD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Trieste to Illinois

Cheapest flights from Trieste to Illinois
Explore the most affordable flight options available from Trieste to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Gotogate deal was found by Cheapflights users on 1/27. 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.
Fri 3/136:25 am
TRS
-
ORD
2 stops17h 23m
Multiple Airlines
Fri 3/202:00 pm
ORD
-
TRS
2 stops18h 05m
Multiple Airlines
Deal found 1/27$603
This Orbitz deal was found by Cheapflights users on 1/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:45 pm
TRS
-
ORD
1 stop12h 10m
Lufthansa
Thu 4/1610:30 pm
ORD
-
TRS
1 stop16h 45m
Lufthansa
Deal found 1/28$619
This Gotogate deal was found by Cheapflights users on 1/28. 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.
Tue 3/316:10 am
TRS
-
ORD
2 stops22h 53m
Multiple Airlines
Thu 4/164:15 pm
ORD
-
TRS
2 stops14h 40m
Multiple Airlines
Deal found 1/28$636
This lol.travel deal was found by Cheapflights users on 1/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:35 am
TRS
-
ORD
1 stop13h 35m
ITA Airways
Sat 7/253:00 pm
ORD
-
TRS
1 stop20h 30m
ITA Airways
Deal found 1/29$802
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:25 am
TRS
-
ORD
1 stop15h 55m
Lufthansa
Fri 3/204:20 pm
ORD
-
TRS
1 stop15h 45m
Lufthansa
Deal found 1/27$825
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/26. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/283:15 pm
TRS
-
ORD
2 stops30h 30m
TAP AIR PORTUGAL
Wed 3/47:10 pm
ORD
-
TRS
2 stops40h 20m
TAP AIR PORTUGAL
Deal found 1/26$982
This Icelandair deal was found by Cheapflights users on 1/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/296:35 am
TRS
-
ORD
2 stops17h 45m
Multiple Airlines
Tue 2/36:30 pm
ORD
-
TRS
2 stops21h 25m
Multiple Airlines
Deal found 1/27$1,111

Find flight deals from Trieste to Illinois

Keep the following information in mind while searching for Trieste to Illinois flight deals. Data was last updated January 29, 2026.

Round-trip from

$603
(Gotogate)
From Trieste Ronchi dei Legionari to Illinois
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Trieste to Illinois 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 January 29, 2026.
Use the filters below to find and compare flights from Trieste to Illinois that are best for you.

Fly from

Trieste

Fly to

Illinois

Route

Depart

Return

Price

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Fri 3/13

6:25 am-5:48 pm

2 stops17h 23m

Chicago O'Hare Intl

Fri 3/20

2:00 pm-2:05 pm

2 stops18h 05m

$603

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Tue 3/31

2:45 pm-7:55 pm

1 stop12h 10m

Chicago O'Hare Intl

Thu 4/16

10:30 pm-10:15 pm

1 stop16h 45m

$619

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Tue 3/31

6:10 am-10:03 pm

2 stops22h 53m

Chicago O'Hare Intl

Thu 4/16

4:15 pm-1:55 pm

2 stops14h 40m

$636

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 7/18

6:35 am-1:10 pm

1 stop13h 35m

Chicago O'Hare Intl

Sat 7/25

3:00 pm-6:30 pm

1 stop20h 30m

$802

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Fri 3/13

6:25 am-4:20 pm

1 stop15h 55m

Chicago O'Hare Intl

Fri 3/20

4:20 pm-2:05 pm

1 stop15h 45m

$825

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 2/28

3:15 pm-2:45 pm

2 stops30h 30m

Chicago O'Hare Intl

Wed 3/4

7:10 pm-6:30 pm

2 stops40h 20m

$982

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 7/18

11:15 am-6:15 pm

2 stops38h 00m

Chicago O'Hare Intl

Sat 7/25

7:25 pm-6:30 pm

2 stops16h 05m

$1,127

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Tue 7/28

3:15 pm-4:50 pm

2 stops32h 35m

$763

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Tue 7/28

6:35 am-1:10 pm

1 stop13h 35m

$850

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 5/30

6:35 am-1:15 pm

1 stop13h 40m

$1,657

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Best time to book a flight from Trieste to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Trieste 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 Trieste to Illinois

What is the cheapest month to book a flight from Trieste to Illinois?

Currently, November is the cheapest month in which you can book a flight from Trieste to Illinois (average of $454). Flying from Trieste to Illinois in January is currently the most expensive (average of $742). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Trieste to Illinois. 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 from for flights from Trieste to Illinois?

    Trieste Ronchi dei Legionari (TRS), located 18.2 mi from the city center, is the airport you fly out of when you book flights from Trieste to Illinois.

  • How long is the flight from Trieste to Illinois?

    Departing from Trieste to Illinois will take you 12h 10m. The distance from Trieste to Illinois is about 4683 mi.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Trieste to Illinois?

    Currently, November is the cheapest month in which you can book a flight from Trieste to Illinois (average of $454). Flying from Trieste to Illinois in January is currently the most expensive (average of $742). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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