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Cheap flights from Chicago to Trieste from $997

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Trieste departing on 2/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
11:50 am - 6:30 pm
ORD
-
TRS
47h 40m2 stops
Turkish Airlines Logo
11:15 am - 10:05 am
TRS
-
ORD
29h 50m2 stops
$997Turkish Airlines
Wed, Feb 4 - Sun, Feb 8
Lufthansa Logo
6:10 pm - 2:00 pm
ORD
-
TRS
12h 50m2 stops
Lufthansa Logo
11:15 am - 11:10 am
TRS
-
ORD
30h 55m2 stops
$1,035Lufthansa
Mon, Jan 5 - Mon, Jan 12
Lufthansa Logo
6:25 pm - 2:00 pm
ORD
-
TRS
12h 35m1 stop
Lufthansa Logo
11:15 am - 2:10 pm
TRS
-
ORD
33h 55m2 stops
$1,079Lufthansa
Mon, Jan 5 - Mon, Jan 12
Turkish Airlines Logo
11:50 am - 6:30 pm
ORD
-
TRS
47h 40m2 stops
Turkish Airlines Logo
6:35 am - 6:25 pm
TRS
-
ORD
42h 50m2 stops
$1,087Turkish Airlines
Wed, Feb 4 - Sun, Feb 8
ITA Airways Logo
3:00 pm - 2:30 pm
ORD
-
TRS
16h 30m1 stop
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m1 stop
$1,407ITA Airways
Thu, Jun 11 - Mon, Jun 22
SWISS Logo
2:20 pm - 10:55 pm
ORD
-
TRS
25h 35m2 stops
SWISS Logo
3:15 pm - 12:35 pm
TRS
-
ORD
28h 20m2 stops
$1,518SWISS
Thu, Jun 11 - Mon, Jun 22
United Airlines Logo
3:45 pm - 10:25 am
ORD
-
TRS
11h 40m1 stop
United Airlines Logo
6:35 am - 8:05 pm
TRS
-
ORD
20h 30m2 stops
$2,005United Airlines
Thu, Jun 11 - Mon, Jun 22

Turkish Airlines flights from Chicago to Trieste

Our best Turkish Airlines deals on Chicago to Trieste flight tickets
Turkish Airlines
Feb 4
ORD11:50 amChicago O'Hare Intl
47h 40m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Feb 8
TRS11:15 amTrieste Ronchi dei Legionari
29h 50m
2 stops
ORD10:05 amChicago O'Hare Intl
$997
Find similar
Turkish Airlines
Feb 4
ORD11:50 amChicago O'Hare Intl
47h 40m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Feb 8
TRS6:35 amTrieste Ronchi dei Legionari
42h 50m
2 stops
ORD6:25 pmChicago O'Hare Intl
$1,087
Find similar
Turkish Airlines
Feb 4
ORD11:50 amChicago O'Hare Intl
23h 40m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Feb 8
TRS11:15 amTrieste Ronchi dei Legionari
62h 10m
2 stops
ORD6:25 pmChicago O'Hare Intl
$1,199
Find similar

Lufthansa flights from Chicago to Trieste

Our best Lufthansa deals on Chicago to Trieste flight tickets
Lufthansa
Jan 5
ORD6:10 pmChicago O'Hare Intl
12h 50m
2 stops
TRS2:00 pmTrieste Ronchi dei Legionari
Jan 12
TRS11:15 amTrieste Ronchi dei Legionari
30h 55m
2 stops
ORD11:10 amChicago O'Hare Intl
$1,035
Find similar
Lufthansa
Jan 5
ORD6:25 pmChicago O'Hare Intl
12h 35m
1 stop
TRS2:00 pmTrieste Ronchi dei Legionari
Jan 12
TRS11:15 amTrieste Ronchi dei Legionari
33h 55m
2 stops
ORD2:10 pmChicago O'Hare Intl
$1,079
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
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

Wed 2/4

11:50 am-6:30 pm

2 stops47h 40m

Trieste Ronchi dei Legionari

Sun 2/8

11:15 am-10:05 am

2 stops29h 50m

$997

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 1/5

6:10 pm-2:00 pm

2 stops12h 50m

Trieste Ronchi dei Legionari

Mon 1/12

11:15 am-11:10 am

2 stops30h 55m

$1,035

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 1/5

6:25 pm-2:00 pm

1 stop12h 35m

Trieste Ronchi dei Legionari

Mon 1/12

11:15 am-2:10 pm

2 stops33h 55m

$1,079

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 2/4

11:50 am-6:30 pm

2 stops47h 40m

Trieste Ronchi dei Legionari

Sun 2/8

6:35 am-6:25 pm

2 stops42h 50m

$1,087

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/11

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Mon 6/22

6:35 am-1:10 pm

1 stop13h 35m

$1,407

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/11

2:20 pm-10:55 pm

2 stops25h 35m

Trieste Ronchi dei Legionari

Mon 6/22

3:15 pm-12:35 pm

2 stops28h 20m

$1,518

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/11

3:45 pm-10:25 am

1 stop11h 40m

Trieste Ronchi dei Legionari

Mon 6/22

6:35 am-8:05 pm

2 stops20h 30m

$2,005

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 6/10

10:40 pm-6:30 pm

2 stops36h 50m

$1,363

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 6/10

3:00 pm-2:30 pm

1 stop16h 30m

$1,437

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Trieste from

How to get the cheapest flight ticket from Chicago 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 day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Thursday when prices can be found for as low as $915. This is often the case because there is less demand to fly during this day of the week. Flights from Chicago to Trieste on a Saturday will generally be more expensive and average around $1,563. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Can stopping save me money on Chicago to Trieste flights?

You could potentially save up to 62% on your flight if you consider stops on a Chicago to Trieste flight.

When to book flights from Chicago to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Trieste according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Trieste (CHI to TRS) flight deals and tips

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

Fastest flight time

11h 45m

Direct flights

None
The fastest flight from Chicago to Trieste takes 11h 45m
There are no direct flights from Chicago to Trieste. There are no popular flight routes from Chicago to Trieste.
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  • How far is Chicago to Trieste Ronchi dei Legionari by plane?

    The distance between Chicago and Trieste Ronchi dei Legionari is about 4695.7 mi. By plane, this route typically takes 11h 45m.

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

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

  • How old do you have to be to fly from Chicago 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 Chicago 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.

  • What is the most popular airline from Chicago to Trieste?

Traveling to a place near Trieste?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Trieste. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Trieste from Chicago which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Chicago to Trieste flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Trieste, momondo offers a useful price alert feature which will track prices for flights to Trieste from Chicago and alert you when they change.

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Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Turkish Airlines
Lufthansa
United Airlines
Scandinavian Airlines
ITA Airways
Aer Lingus
SWISS
Iberia
British Airways
TAP AIR PORTUGAL
American Airlines