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Cheap flights from Chicago to Trieste from $806

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 5/7. 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.
ITA Airways Logo
3:00 pm - 2:30 pm
ORD
-
TRS
16h 30m
1 stop
ITA Airways Logo
7:15 pm - 1:10 pm
TRS
-
ORD
24h 55m
1 stop
$806ITA Airways
Thu, May 7 - Wed, May 20
Multiple Airlines Logo
11:25 am - 1:10 pm
ORD
-
TRS
18h 45m
2 stops
Multiple Airlines Logo
6:35 am - 9:40 am
TRS
-
ORD
34h 05m
3 stops
$808Multiple Airlines
Thu, May 7 - Wed, May 20
ITA Airways Logo
9:15 am - 6:30 pm
ORD
-
TRS
26h 15m
2 stops
ITA Airways Logo
11:15 am - 1:10 pm
TRS
-
ORD
32h 55m
1 stop
$854ITA Airways
Thu, May 7 - Wed, May 20
Multiple Airlines Logo
11:25 am - 2:30 pm
ORD
-
TRS
20h 05m
3 stops
Multiple Airlines Logo
11:15 am - 9:40 am
TRS
-
ORD
29h 25m
3 stops
$864Multiple Airlines
Thu, May 7 - Wed, May 20
ITA Airways Logo
11:17 am - 2:30 pm
ORD
-
TRS
20h 13m
2 stops
ITA Airways Logo
6:35 am - 8:35 pm
TRS
-
ORD
21h 00m
2 stops
$891ITA Airways
Thu, May 7 - Wed, May 20
Lufthansa Logo
4:05 pm - 2:05 pm
ORD
-
TRS
15h 00m
1 stop
Lufthansa Logo
2:40 pm - 9:05 pm
TRS
-
ORD
12h 25m
1 stop
$892Lufthansa
Fri, Mar 6 - Wed, Mar 18
ITA Airways Logo
8:45 am - 2:30 pm
ORD
-
TRS
22h 45m
2 stops
ITA Airways Logo
11:15 am - 1:10 pm
TRS
-
ORD
32h 55m
1 stop
$903ITA Airways
Fri, May 8 - Fri, May 15
TAP AIR PORTUGAL Logo
6:00 pm - 2:30 pm
ORD
-
TRS
37h 30m
2 stops
TAP AIR PORTUGAL Logo
6:35 am - 4:15 pm
TRS
-
ORD
40h 40m
2 stops
$932TAP AIR PORTUGAL
Fri, May 8 - Fri, May 15
KLM Logo
1:22 pm - 2:30 pm
MDW
-
TRS
18h 08m
2 stops
KLM Logo
6:35 am - 6:14 pm
TRS
-
MDW
18h 39m
2 stops
$2,314KLM
Sat, May 16 - Sun, May 31
KLM Logo
12:45 pm - 2:30 pm
MDW
-
TRS
18h 45m
2 stops
KLM Logo
6:35 am - 10:31 pm
TRS
-
MDW
21h 56m
2 stops
$2,457KLM
Fri, Mar 6 - Wed, Mar 18

Lufthansa flights from Chicago to Trieste

Our best Lufthansa deals on Chicago to Trieste flight tickets
Lufthansa
Mar 6
ORD4:05 pmChicago O'Hare Intl
15h 00m
1 stop
TRS2:05 pmTrieste Ronchi dei Legionari
Mar 18
TRS2:40 pmTrieste Ronchi dei Legionari
12h 25m
1 stop
ORD9:05 pmChicago O'Hare Intl
$892
Lufthansa
May 8
ORD10:30 pmChicago O'Hare Intl
16h 25m
1 stop
TRS9:55 pmTrieste Ronchi dei Legionari
May 15
TRS6:00 amTrieste Ronchi dei Legionari
20h 55m
1 stop
ORD7:55 pmChicago O'Hare Intl
$997
Lufthansa
Jun 6
ORD4:05 pmChicago O'Hare Intl
14h 55m
1 stop
TRS2:00 pmTrieste Ronchi dei Legionari
Jun 13
TRS6:00 amTrieste Ronchi dei Legionari
16h 50m
2 stops
ORD3:50 pmChicago O'Hare Intl
$1,546

TAP AIR PORTUGAL flights from Chicago to Trieste

Our best TAP AIR PORTUGAL deals on Chicago to Trieste flight tickets
TAP AIR PORTUGAL
May 8
ORD6:00 pmChicago O'Hare Intl
37h 30m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
May 15
TRS6:35 amTrieste Ronchi dei Legionari
40h 40m
2 stops
ORD4:15 pmChicago O'Hare Intl
$932
TAP AIR PORTUGAL
May 8
ORD6:00 pmChicago O'Hare Intl
37h 30m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
May 15
TRS6:35 amTrieste Ronchi dei Legionari
40h 40m
2 stops
ORD4:15 pmChicago O'Hare Intl
$933
TAP AIR PORTUGAL
Jun 6
ORD6:15 pmChicago O'Hare Intl
21h 40m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
Jun 13
TRS3:15 pmTrieste Ronchi dei Legionari
31h 45m
2 stops
ORD4:00 pmChicago O'Hare Intl
$1,120

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 February 9, 2026.
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

Thu 5/7

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Wed 5/20

7:15 pm-1:10 pm

1 stop24h 55m

$806

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/7

11:25 am-1:10 pm

2 stops18h 45m

Trieste Ronchi dei Legionari

Wed 5/20

6:35 am-9:40 am

3 stops34h 05m

$808

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/7

9:15 am-6:30 pm

2 stops26h 15m

Trieste Ronchi dei Legionari

Wed 5/20

11:15 am-1:10 pm

1 stop32h 55m

$854

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/7

11:25 am-2:30 pm

3 stops20h 05m

Trieste Ronchi dei Legionari

Wed 5/20

11:15 am-9:40 am

3 stops29h 25m

$864

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Thu 5/7

11:17 am-2:30 pm

2 stops20h 13m

Trieste Ronchi dei Legionari

Wed 5/20

6:35 am-8:35 pm

2 stops21h 00m

$891

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 3/6

4:05 pm-2:05 pm

1 stop15h 00m

Trieste Ronchi dei Legionari

Wed 3/18

2:40 pm-9:05 pm

1 stop12h 25m

$892

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 5/8

8:45 am-2:30 pm

2 stops22h 45m

Trieste Ronchi dei Legionari

Fri 5/15

11:15 am-1:10 pm

1 stop32h 55m

$903

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 5/8

6:00 pm-2:30 pm

2 stops37h 30m

Trieste Ronchi dei Legionari

Fri 5/15

6:35 am-4:15 pm

2 stops40h 40m

$932

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Sat 5/16

1:22 pm-2:30 pm

2 stops18h 08m

Trieste Ronchi dei Legionari

Sun 5/31

6:35 am-6:14 pm

2 stops18h 39m

$2,314

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Fri 3/6

12:45 pm-2:30 pm

2 stops18h 45m

Trieste Ronchi dei Legionari

Wed 3/18

6:35 am-10:31 pm

2 stops21h 56m

$2,457

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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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

Can stopping save me money on Chicago to Trieste flights?

You could potentially save up to 10% 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 40m

Direct flights

None
The fastest flight from Chicago to Trieste takes 11h 40m
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 40m.

  • 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?

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Udine
Grado

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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
Scandinavian Airlines
United Airlines
Lufthansa
Aer Lingus
ITA Airways
TAP AIR PORTUGAL
Iberia
SWISS
British Airways
American Airlines