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Cheap flights from Chicago O'Hare Intl Airport to Trieste from $707

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Trieste departing on 4/8. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
11:50 am - 6:30 pm
ORD
-
TRS
23h 40m2 stops
Turkish Airlines Logo
11:15 am - 11:05 am
TRS
-
ORD
29h 50m2 stops
$923Turkish Airlines
Thu, Mar 5 - Sat, Mar 21
Turkish Airlines Logo
11:25 am - 6:30 pm
ORD
-
TRS
24h 05m2 stops
Turkish Airlines Logo
11:15 am - 6:15 pm
TRS
-
ORD
38h 00m2 stops
$928Turkish Airlines
Wed, Apr 15 - Sun, Apr 19
Lufthansa Logo
6:25 pm - 2:05 pm
ORD
-
TRS
12h 40m1 stop
Lufthansa Logo
6:25 am - 4:20 pm
TRS
-
ORD
15h 55m1 stop
$940Lufthansa
Thu, Mar 5 - Sat, Mar 21
ITA Airways Logo
3:00 pm - 10:55 pm
ORD
-
TRS
24h 55m1 stop
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m1 stop
$947ITA Airways
Wed, Apr 15 - Sun, Apr 19
Turkish Airlines Logo
11:25 am - 6:30 pm
ORD
-
TRS
24h 05m2 stops
Turkish Airlines Logo
11:15 am - 6:15 pm
TRS
-
ORD
38h 00m2 stops
$953Turkish Airlines
Thu, May 14 - Sun, May 24
ITA Airways Logo
3:00 pm - 10:25 am
ORD
-
TRS
12h 25m1 stop
ITA Airways Logo
6:35 am - 6:25 pm
TRS
-
ORD
18h 50m2 stops
$957ITA Airways
Wed, Apr 15 - Sun, Apr 19
Turkish Airlines Logo
11:50 am - 6:30 pm
ORD
-
TRS
23h 40m2 stops
Turkish Airlines Logo
11:15 am - 7:25 pm
TRS
-
ORD
38h 10m2 stops
$992Turkish Airlines
Thu, Mar 5 - Sat, Mar 21
Icelandair Logo
7:25 pm - 6:30 pm
ORD
-
TRS
16h 05m2 stops
Icelandair Logo
11:15 am - 9:40 pm
TRS
-
ORD
17h 25m2 stops
$1,158Icelandair
Thu, Jun 11 - Sun, Jun 21
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
$1,252ITA Airways
Thu, Jun 11 - Sun, Jun 21
ITA Airways Logo
3:00 pm - 2:30 pm
ORD
-
TRS
16h 30m1 stop
ITA Airways Logo
3:15 pm - 6:12 pm
TRS
-
ORD
33h 57m2 stops
$1,255ITA Airways
Thu, Jun 11 - Sun, Jun 21

Turkish Airlines flights from Chicago O'Hare Intl Airport to Trieste

Our best Turkish Airlines deals on Chicago O'Hare Intl Airport to Trieste flight tickets
Turkish Airlines
Mar 5
ORD11:50 amChicago O'Hare Intl
23h 40m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Mar 21
TRS11:15 amTrieste Ronchi dei Legionari
29h 50m
2 stops
ORD11:05 amChicago O'Hare Intl
$923
Find similar
Turkish Airlines
Apr 15
ORD11:25 amChicago O'Hare Intl
24h 05m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 19
TRS11:15 amTrieste Ronchi dei Legionari
53h 25m
2 stops
ORD9:40 amChicago O'Hare Intl
$928
Find similar
Turkish Airlines
May 14
ORD11:25 amChicago O'Hare Intl
24h 05m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
May 24
TRS11:15 amTrieste Ronchi dei Legionari
38h 00m
2 stops
ORD6:15 pmChicago O'Hare Intl
$953
Find similar

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
Apr 15
ORD3:00 pmChicago O'Hare Intl
24h 55m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
Apr 19
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$947
Find similar
ITA Airways
Apr 15
ORD3:00 pmChicago O'Hare Intl
20h 30m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 19
TRS6:35 amTrieste Ronchi dei Legionari
18h 50m
2 stops
ORD6:25 pmChicago O'Hare Intl
$957
Find similar
ITA Airways
Jun 11
ORD3:00 pmChicago O'Hare Intl
16h 30m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
Jun 21
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,252
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 22, 2025.
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

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 3/5

11:50 am-6:30 pm

2 stops23h 40m

Trieste Ronchi dei Legionari

Sat 3/21

11:15 am-11:05 am

2 stops29h 50m

$923

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/15

11:25 am-6:30 pm

2 stops24h 05m

Trieste Ronchi dei Legionari

Sun 4/19

11:15 am-6:15 pm

2 stops38h 00m

$928

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 3/5

6:25 pm-2:05 pm

1 stop12h 40m

Trieste Ronchi dei Legionari

Sat 3/21

6:25 am-4:20 pm

1 stop15h 55m

$940

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/15

3:00 pm-10:55 pm

1 stop24h 55m

Trieste Ronchi dei Legionari

Sun 4/19

6:35 am-1:10 pm

1 stop13h 35m

$947

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/14

11:25 am-6:30 pm

2 stops24h 05m

Trieste Ronchi dei Legionari

Sun 5/24

11:15 am-6:15 pm

2 stops38h 00m

$953

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/15

3:00 pm-10:25 am

1 stop12h 25m

Trieste Ronchi dei Legionari

Sun 4/19

6:35 am-6:25 pm

2 stops18h 50m

$957

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 3/5

11:50 am-6:30 pm

2 stops23h 40m

Trieste Ronchi dei Legionari

Sat 3/21

11:15 am-7:25 pm

2 stops38h 10m

$992

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/11

7:25 pm-6:30 pm

2 stops16h 05m

Trieste Ronchi dei Legionari

Sun 6/21

11:15 am-9:40 pm

2 stops17h 25m

$1,158

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/11

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Sun 6/21

6:35 am-1:10 pm

1 stop13h 35m

$1,252

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 6/11

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Sun 6/21

3:15 pm-6:12 pm

2 stops33h 57m

$1,255

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Trieste from

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 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 O'Hare Intl Airport 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 O'Hare Intl Airport to Trieste flights?

You could potentially save up to 62% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Trieste flight.

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

Fastest flight time

20h 10m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Trieste takes 20h 10m
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

  • 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 20h 10m.

  • 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.

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?

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?

momondo provides multiple filters to help you find the best flight to Trieste from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

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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