How long does it take to fly to Trieste?

Average flight duration from Illinois to Trieste depends on which airport you fly into and out of. Flying from Chicago to Venice Marco Polo Airport is 12h 25m on average, while flying from Moline to Venice Marco Polo Airport is 21h 05m on average. Venice Marco Polo Airport is the most popular airport in Trieste.

When did momondo last update prices for flights from Illinois to Trieste Ronchi dei Legionari Airport?

Prices for flights from Illinois to Trieste Ronchi dei Legionari Airport are updated daily.

How old do you have to be to fly from Illinois to Trieste Ronchi dei Legionari Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Trieste Ronchi dei Legionari Airport.

What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$568 Cheap Flights from Illinois to Trieste in 2026

Find the cheapest flights from Illinois to Trieste

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Cheap round-trip flights

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3:00 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

20h 30m1 stop Rome Fiumicino

7:15 pm - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

24h 55m1 stop Rome Fiumicino

$798ITA Airways

Fri, Oct 16 - Thu, Oct 22

7:25 pm - 8:25 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

18h 00m2 stops Reykjavik Keflavik Intl Brussels Bruxelles-National

9:10 pm - 7:15 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

29h 05m2 stops Berlin Brandenburg Dublin

$863Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

3:35 pm - 1:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 20m2 stops Munich Franz Josef Strauss Frankfurt am Main

6:15 am - 12:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 40m1 stop Frankfurt am Main

$893Lufthansa

Fri, Oct 16 - Thu, Oct 22

3:40 pm - 2:30 pmSTL Lambert-St Louis-TRS Trieste Ronchi dei Legionari

39h 50m2 stops Frankfurt am Main Rome Fiumicino

6:35 am - 9:53 pmTRS Trieste Ronchi dei Legionari-STL Lambert-St Louis

22h 18m2 stops Rome Fiumicino Newark

$1,032Multiple Airlines

Fri, Jan 8 - Fri, Jan 22

7:25 pm - 8:25 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

18h 00m2 stops Reykjavik Keflavik Intl Brussels Bruxelles-National

10:30 am - 9:00 amTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

29h 30m3 stops Barcelona-El Prat Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$1,040Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

5:20 pm - 10:25 amSTL Lambert-St Louis-TRS Trieste Ronchi dei Legionari

34h 05m2 stops Newark Rome Fiumicino

6:35 am - 9:53 pmTRS Trieste Ronchi dei Legionari-STL Lambert-St Louis

22h 18m2 stops Rome Fiumicino Newark

$1,050United Airlines

Wed, Jan 6 - Fri, Jan 22

3:40 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

11h 45m1 stop Rome Fiumicino

6:35 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Rome Fiumicino

$1,057United Airlines

Mon, Mar 1 - Fri, Mar 5

10:45 am - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 40m2 stops Newark Rome Fiumicino

6:35 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Rome Fiumicino

$1,061United Airlines

Mon, Mar 1 - Fri, Mar 5

6:00 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

21h 55m2 stops Munich Franz Josef Strauss Rome Fiumicino

3:15 pm - 3:20 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

31h 05m2 stops Rome Fiumicino Frankfurt am Main

$1,065Lufthansa

Thu, Dec 31 - Mon, Jan 11

1:10 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

14h 15m2 stops Newark Rome Fiumicino

6:35 am - 6:47 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

19h 12m2 stops Rome Fiumicino Newark

$1,071United Airlines

Mon, Mar 1 - Fri, Mar 5

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Lufthansa flights from Illinois to Trieste

Our best Lufthansa deals on Illinois to Trieste flight tickets

Lufthansa

Oct 16

ORD3:35 pmChicago O'Hare Intl

15h 20m

2 stops

TRS1:55 pmTrieste Ronchi dei Legionari

Oct 22

TRS6:15 amTrieste Ronchi dei Legionari

13h 40m

1 stop

ORD12:55 pmChicago O'Hare Intl

$893

Lufthansa

Dec 31

ORD6:00 pmChicago O'Hare Intl

21h 55m

2 stops

TRS10:55 pmTrieste Ronchi dei Legionari

Jan 11

TRS3:15 pmTrieste Ronchi dei Legionari

31h 05m

2 stops

ORD3:20 pmChicago O'Hare Intl

$1,065

Lufthansa

Dec 31

ORD3:40 pmChicago O'Hare Intl

19h 50m

1 stop

TRS6:30 pmTrieste Ronchi dei Legionari

Jan 10

TRS3:15 pmTrieste Ronchi dei Legionari

53h 55m

2 stops

ORD2:10 pmChicago O'Hare Intl

$1,074

United Airlines flights from Illinois to Trieste

Our best United Airlines deals on Illinois to Trieste flight tickets

United Airlines

Jan 6

STL5:20 pmLambert-St Louis

34h 05m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Jan 22

TRS6:35 amTrieste Ronchi dei Legionari

22h 18m

2 stops

STL9:53 pmLambert-St Louis

$1,050

United Airlines

Mar 1

ORD3:40 pmChicago O'Hare Intl

11h 45m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Mar 5

TRS6:35 amTrieste Ronchi dei Legionari

13h 35m

1 stop

ORD1:10 pmChicago O'Hare Intl

$1,057

United Airlines

Mar 1

ORD10:45 amChicago O'Hare Intl

16h 40m

2 stops

TRS10:25 amTrieste Ronchi dei Legionari

Mar 5

TRS6:35 amTrieste Ronchi dei Legionari

13h 35m

1 stop

ORD1:10 pmChicago O'Hare Intl

$1,061

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Fri 10/16

3:00 pm-6:30 pm

1 stop20h 30m

Trieste Ronchi dei Legionari

Thu 10/22

7:15 pm-1:10 pm

1 stop24h 55m

$798

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Fri 10/16

7:25 pm-8:25 pm

2 stops18h 00m

Trieste Ronchi dei Legionari

Thu 10/22

9:10 pm-7:15 pm

2 stops29h 05m

$863

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Fri 10/16

3:35 pm-1:55 pm

2 stops15h 20m

Trieste Ronchi dei Legionari

Thu 10/22

6:15 am-12:55 pm

1 stop13h 40m

$893

St. LouisTrieste

STL Lambert-St Louis - TRS Trieste Ronchi dei Legionari

STLTRS

Lambert-St Louis

Fri 1/8

3:40 pm-2:30 pm

2 stops39h 50m

Trieste Ronchi dei Legionari

Fri 1/22

6:35 am-9:53 pm

2 stops22h 18m

$1,032

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Fri 10/16

7:25 pm-8:25 pm

2 stops18h 00m

Trieste Ronchi dei Legionari

Thu 10/22

10:30 am-9:00 am

3 stops29h 30m

$1,040

St. LouisTrieste

STL Lambert-St Louis - TRS Trieste Ronchi dei Legionari

STLTRS

Lambert-St Louis

Wed 1/6

5:20 pm-10:25 am

2 stops34h 05m

Trieste Ronchi dei Legionari

Fri 1/22

6:35 am-9:53 pm

2 stops22h 18m

$1,050

Quickest round-trip

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Mon 3/1

3:40 pm-10:25 am

1 stop11h 45m

Trieste Ronchi dei Legionari

Fri 3/5

6:35 am-1:10 pm

1 stop13h 35m

$1,057

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Mon 3/1

10:45 am-10:25 am

2 stops16h 40m

Trieste Ronchi dei Legionari

Fri 3/5

6:35 am-1:10 pm

1 stop13h 35m

$1,061

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Thu 12/31

6:00 pm-10:55 pm

2 stops21h 55m

Trieste Ronchi dei Legionari

Mon 1/11

3:15 pm-3:20 pm

2 stops31h 05m

$1,065

ChicagoTrieste

ORD Chicago O'Hare Intl - TRS Trieste Ronchi dei Legionari

ORDTRS

Chicago O'Hare Intl

Mon 3/1

1:10 pm-10:25 am

2 stops14h 15m

Trieste Ronchi dei Legionari

Fri 3/5

6:35 am-6:47 pm

2 stops19h 12m

$1,071

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Airlines

Other information

What is the cheapest airline that flies from Illinois to Trieste Ronchi dei Legionari?

TAP AIR PORTUGAL and KLM are the most popular carriers operating from Illinois to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

Turkish Airlines, United Airlines and Lufthansa are the top three most popular airlines that fly to Trieste from Illinois according to our data. Turkish Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 10 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

Cheap Illinois to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Trieste

Best Price Found	$568
Fastest flight time	11h 45m
Direct flights	None

The best one-way flight to Trieste from Illinois in the past 72 hours is $568. The best round-trip flight deal from Illinois to Trieste found on momondo in the last 72 hours is $798.

The fastest flight from Illinois to Trieste takes 11h 45m

There are no direct flights from Illinois to Trieste. There are no popular flight routes from Illinois to Trieste.

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Frequently asked questions about flying from Illinois to Trieste

When did momondo last update prices for flights from Illinois to Trieste Ronchi dei Legionari Airport?
Prices for flights from Illinois to Trieste Ronchi dei Legionari Airport are updated daily.
How old do you have to be to fly from Illinois to Trieste Ronchi dei Legionari Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Trieste Ronchi dei Legionari Airport.
What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?
The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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Udine

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Trieste?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Trieste for you.

Can I find flights from Illinois to Trieste with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Trieste flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Trieste?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Trieste.

I’m not ready to book a flight from Illinois to Trieste right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Trieste now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Trieste and let you know when they change.

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Cheap flights from Illinois to Trieste from $568

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Trieste departing on 10/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Cabin classes currently available on flights to Trieste

List of cabin classes available on flights landing in Trieste. Availability may vary depending on flight origin and airline.

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