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Cheap flights from Chicago O'Hare Intl Airport to Trieste from $1,226

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 O'Hare Intl Airport to Trieste departing on 4/5. 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.
ITA Airways Logo
3:00 pm - 2:30 pmORD-TRS
16h 30m1 stop
ITA Airways Logo
6:35 am - 1:10 pmTRS-ORD
13h 35m1 stop
$1,226ITA Airways
Find Deal
Sun, Apr 5 - Wed, Apr 8
ITA Airways Logo
9:20 am - 6:30 pmORD-TRS
26h 10m2 stops
ITA Airways Logo
6:35 am - 1:10 pmTRS-ORD
13h 35m1 stop
$1,230ITA Airways
Find Deal
Sun, Apr 5 - Wed, Apr 8
ITA Airways Logo
8:55 am - 6:30 pmORD-TRS
26h 35m2 stops
ITA Airways Logo
6:35 am - 1:10 pmTRS-ORD
13h 35m1 stop
$1,231ITA Airways
Find Deal
Sun, Apr 5 - Wed, Apr 8
Turkish Airlines Logo
8:20 pm - 6:30 pmORD-TRS
39h 10m2 stops
Turkish Airlines Logo
11:15 am - 6:25 pmTRS-ORD
38h 10m2 stops
$1,557Turkish Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
3:45 pm - 10:25 amORD-TRS
11h 40m1 stop
United Airlines Logo
6:35 am - 1:10 pmTRS-ORD
13h 35m1 stop
$1,671United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
3:45 pm - 6:30 pmORD-TRS
19h 45m1 stop
Multiple Airlines Logo
3:15 pm - 2:00 pmTRS-ORD
29h 45m2 stops
$1,829Multiple Airlines
Find Deal
Sun, Dec 14 - Thu, Jan 8
Multiple Airlines Logo
3:45 pm - 10:25 amORD-TRS
11h 40m1 stop
Multiple Airlines Logo
2:50 pm - 3:20 pmTRS-ORD
31h 30m1 stop
$1,842Multiple Airlines
Find Deal
Sun, Dec 14 - Thu, Jan 8
Lufthansa Logo
6:10 pm - 2:05 pmORD-TRS
12h 55m2 stops
Lufthansa Logo
6:25 am - 3:20 pmTRS-ORD
15h 55m1 stop
$1,889Lufthansa
Find Deal
Sat, Dec 13 - Sat, Jan 10
Lufthansa Logo
6:10 pm - 2:05 pmORD-TRS
12h 55m2 stops
Lufthansa Logo
6:35 am - 6:25 pmTRS-ORD
18h 50m2 stops
$1,892Lufthansa
Find Deal
Sat, Dec 13 - Sat, Jan 10
Turkish Airlines Logo
11:50 am - 6:30 pmORD-TRS
23h 40m2 stops
Turkish Airlines Logo
3:15 pm - 10:05 amTRS-ORD
25h 50m2 stops
$3,623Turkish Airlines
Find Deal
Fri, Dec 19 - Sat, Jan 3

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 5
ORD3:00 pmChicago O'Hare Intl
16h 30m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
Apr 8
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,226
Find similar
ITA Airways
Apr 5
ORD9:20 amChicago O'Hare Intl
26h 10m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 8
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,230
Find similar
ITA Airways
Apr 5
ORD8:55 amChicago O'Hare Intl
26h 35m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 8
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,231
Find similar

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
Dec 4
ORD8:20 pmChicago O'Hare Intl
39h 10m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Dec 8
TRS11:15 amTrieste Ronchi dei Legionari
38h 10m
2 stops
ORD6:25 pmChicago O'Hare Intl
$1,557
Find similar
Turkish Airlines
Dec 19
ORD11:50 amChicago O'Hare Intl
23h 40m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Jan 3
TRS3:15 pmTrieste Ronchi dei Legionari
25h 50m
2 stops
ORD10:05 amChicago O'Hare Intl
$3,623
Find similar
Turkish Airlines
Dec 20
ORD8:20 pmChicago O'Hare Intl
19h 35m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
Jan 3
TRS3:15 pmTrieste Ronchi dei Legionari
25h 50m
2 stops
ORD10:05 amChicago O'Hare Intl
$3,962
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 November 6, 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

Sun 4/5

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Wed 4/8

6:35 am-1:10 pm

1 stop13h 35m

$1,226

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 4/5

9:20 am-6:30 pm

2 stops26h 10m

Trieste Ronchi dei Legionari

Wed 4/8

6:35 am-1:10 pm

1 stop13h 35m

$1,230

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 4/5

8:55 am-6:30 pm

2 stops26h 35m

Trieste Ronchi dei Legionari

Wed 4/8

6:35 am-1:10 pm

1 stop13h 35m

$1,231

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 12/4

8:20 pm-6:30 pm

2 stops39h 10m

Trieste Ronchi dei Legionari

Mon 12/8

11:15 am-6:25 pm

2 stops38h 10m

$1,557

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 12/4

3:45 pm-10:25 am

1 stop11h 40m

Trieste Ronchi dei Legionari

Mon 12/8

6:35 am-1:10 pm

1 stop13h 35m

$1,671

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 12/14

3:45 pm-6:30 pm

1 stop19h 45m

Trieste Ronchi dei Legionari

Thu 1/8

3:15 pm-2:00 pm

2 stops29h 45m

$1,829

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 12/14

3:45 pm-10:25 am

1 stop11h 40m

Trieste Ronchi dei Legionari

Thu 1/8

2:50 pm-3:20 pm

1 stop31h 30m

$1,842

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sat 12/13

6:10 pm-2:05 pm

2 stops12h 55m

Trieste Ronchi dei Legionari

Sat 1/10

6:25 am-3:20 pm

1 stop15h 55m

$1,889

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sat 12/13

6:10 pm-2:05 pm

2 stops12h 55m

Trieste Ronchi dei Legionari

Sat 1/10

6:35 am-6:25 pm

2 stops18h 50m

$1,892

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 12/19

11:50 am-6:30 pm

2 stops23h 40m

Trieste Ronchi dei Legionari

Sat 1/3

3:15 pm-10:05 am

2 stops25h 50m

$3,623

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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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

Direct flights

None
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.
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  • 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 11h 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.

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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