When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Trieste Ronchi dei Legionari Airport?

Prices for flights from Chicago O'Hare Intl Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

How old do you have to be to fly from Chicago O'Hare Intl Airport to Trieste Ronchi dei Legionari Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport 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.

$437 Cheap Flights from Chicago O'Hare Intl Airport to Trieste in 2026

Find the cheapest flights from Chicago O'Hare Intl Airport to Trieste

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:00 pm - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 30m1 stop Rome Fiumicino

11:15 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

32h 55m1 stop Rome Fiumicino

$779ITA Airways

Fri, Oct 9 - Thu, Oct 15

3:00 pm - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 30m1 stop Rome Fiumicino

11:15 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

32h 55m1 stop Rome Fiumicino

$780ITA Airways

Fri, Oct 9 - Thu, Oct 15

3:00 pm - 11:45 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

25h 45m2 stops Rome Fiumicino London Heathrow

4:25 pm - 7:15 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

33h 50m1 stop Dublin

$845Multiple Airlines

Fri, Oct 9 - Thu, Oct 15

4:05 pm - 1:45 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

14h 40m1 stop Frankfurt am Main

2:45 pm - 7:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

12h 10m1 stop Frankfurt am Main

$882Lufthansa

Tue, Oct 6 - Tue, Oct 13

11:25 am - 10:35 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

28h 10m2 stops Istanbul Naples

11:20 am - 9:40 amTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

29h 20m2 stops Naples Istanbul

$883Multiple Airlines

Tue, Oct 6 - Tue, Oct 13

4:05 pm - 1:45 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

14h 40m1 stop Frankfurt am Main

2:45 pm - 7:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

12h 10m1 stop Frankfurt am Main

$884Lufthansa

Tue, Oct 6 - Tue, Oct 13

3:45 pm - 1:45 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 00m2 stops Toronto Pearson Intl Frankfurt am Main

6:20 am - 12:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Frankfurt am Main

$887Multiple Airlines

Tue, Oct 6 - Tue, Oct 13

3:45 pm - 1:45 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 00m2 stops Toronto Pearson Intl Frankfurt am Main

6:20 am - 7:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

20h 35m1 stop Frankfurt am Main

$891Multiple Airlines

Tue, Oct 6 - Tue, Oct 13

10:30 pm - 10:15 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 45m1 stop Frankfurt am Main

6:20 am - 12:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Frankfurt am Main

$894Lufthansa

Tue, Oct 6 - Tue, Oct 13

5:35 pm - 1:45 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

13h 10m2 stops Toronto Pearson Intl Frankfurt am Main

6:20 am - 7:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

20h 35m1 stop Frankfurt am Main

$901Multiple Airlines

Tue, Oct 6 - Tue, Oct 13

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ITA Airways flights from Chicago O'Hare Intl Airport to Trieste

Our best ITA Airways deals on Chicago O'Hare Intl Airport to Trieste flight tickets

ITA Airways

Oct 9

ORD3:00 pmChicago O'Hare Intl

16h 30m

1 stop

TRS2:30 pmTrieste Ronchi dei Legionari

Oct 15

TRS11:15 amTrieste Ronchi dei Legionari

32h 55m

1 stop

ORD1:10 pmChicago O'Hare Intl

$779

ITA Airways

Oct 9

ORD3:00 pmChicago O'Hare Intl

16h 30m

1 stop

TRS2:30 pmTrieste Ronchi dei Legionari

Oct 15

TRS11:15 amTrieste Ronchi dei Legionari

32h 55m

1 stop

ORD1:10 pmChicago O'Hare Intl

$780

ITA Airways

Sep 12

ORD3:00 pmChicago O'Hare Intl

12h 25m

1 stop

TRS10:25 amTrieste Ronchi dei Legionari

Sep 19

TRS6:35 amTrieste Ronchi dei Legionari

13h 35m

1 stop

ORD1:10 pmChicago O'Hare Intl

$934

Lufthansa flights from Chicago O'Hare Intl Airport to Trieste

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Trieste flight tickets

Lufthansa

Oct 6

ORD4:05 pmChicago O'Hare Intl

14h 40m

1 stop

TRS1:45 pmTrieste Ronchi dei Legionari

Oct 13

TRS2:45 pmTrieste Ronchi dei Legionari

12h 10m

1 stop

ORD7:55 pmChicago O'Hare Intl

$882

Lufthansa

Oct 6

ORD4:05 pmChicago O'Hare Intl

14h 40m

1 stop

TRS1:45 pmTrieste Ronchi dei Legionari

Oct 13

TRS2:45 pmTrieste Ronchi dei Legionari

12h 10m

1 stop

ORD7:55 pmChicago O'Hare Intl

$884

Lufthansa

Oct 6

ORD10:30 pmChicago O'Hare Intl

16h 45m

1 stop

TRS10:15 pmTrieste Ronchi dei Legionari

Oct 13

TRS6:20 amTrieste Ronchi dei Legionari

13h 35m

1 stop

ORD12:55 pmChicago O'Hare Intl

$894

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Trieste that are best for you.

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 10/9

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Thu 10/15

11:15 am-1:10 pm

1 stop32h 55m

$779

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Fri 10/9

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Thu 10/15

11:15 am-1:10 pm

1 stop32h 55m

$780

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Fri 10/9

3:00 pm-11:45 pm

2 stops25h 45m

Trieste Ronchi dei Legionari

Thu 10/15

4:25 pm-7:15 pm

1 stop33h 50m

$845

Quickest round-trip

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

4:05 pm-1:45 pm

1 stop14h 40m

Trieste Ronchi dei Legionari

Tue 10/13

2:45 pm-7:55 pm

1 stop12h 10m

$882

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

11:25 am-10:35 pm

2 stops28h 10m

Trieste Ronchi dei Legionari

Tue 10/13

11:20 am-9:40 am

2 stops29h 20m

$883

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

4:05 pm-1:45 pm

1 stop14h 40m

Trieste Ronchi dei Legionari

Tue 10/13

2:45 pm-7:55 pm

1 stop12h 10m

$884

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

3:45 pm-1:45 pm

2 stops15h 00m

Trieste Ronchi dei Legionari

Tue 10/13

6:20 am-12:55 pm

1 stop13h 35m

$887

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

3:45 pm-1:45 pm

2 stops15h 00m

Trieste Ronchi dei Legionari

Tue 10/13

6:20 am-7:55 pm

1 stop20h 35m

$891

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

10:30 pm-10:15 pm

1 stop16h 45m

Trieste Ronchi dei Legionari

Tue 10/13

6:20 am-12:55 pm

1 stop13h 35m

$894

ChicagoTrieste

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

ORDTRS

Chicago O'Hare Intl

Tue 10/6

5:35 pm-1:45 pm

2 stops13h 10m

Trieste Ronchi dei Legionari

Tue 10/13

6:20 am-7:55 pm

1 stop20h 35m

$901

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 Chicago O'Hare Intl Airport 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

What is the cheapest airline that flies from Chicago O'Hare Intl to Trieste Ronchi dei Legionari?

Lufthansa and KLM are the most popular carriers operating from Chicago O'Hare Intl 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 Chicago O'Hare Intl Airport according to our data. Turkish Airlines is the first choice among our users, with 29% 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.

When to book flights from Chicago O'Hare Intl Airport to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Trieste according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Trieste (ORD to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Trieste

Best Price Found	$437
Fastest flight time	16h 40m
Direct flights	None

The best one-way flight to Trieste from Chicago O'Hare Intl Airport in the past 72 hours is $437. The best round-trip flight deal from Chicago O'Hare Intl Airport to Trieste found on momondo in the last 72 hours is $779.

The fastest flight from Chicago O'Hare Intl Airport to Trieste takes 16h 40m

There are no direct flights from Chicago O'Hare Intl Airport to Trieste. There are no popular flight routes from Chicago O'Hare Intl Airport to Trieste.

Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Trieste

How far is Chicago O'Hare Intl to Trieste Ronchi dei Legionari by plane?
Trieste Ronchi dei Legionari is 4701.3 mi away from Chicago O'Hare Intl. A reasonable flight in good conditions will take 16h 40m.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Trieste Ronchi dei Legionari Airport?
Prices for flights from Chicago O'Hare Intl Airport to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Trieste Ronchi dei Legionari Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport 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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Why should I use momondo to find a flight deal from Chicago to Trieste?

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All flight searches from Chicago to Trieste on momondo can be filtered to show those which offer flexible booking policies.

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

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

Yes momondo offers price alerts on flights to Trieste from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.