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Cheap flights from Trieste to Chicago from $427

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to Chicago departing on 9/22. 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

Find the cheapest flights from Trieste to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m
1 stop
ITA Airways Logo
3:00 pm - 10:55 pm
ORD
-
TRS
24h 55m
1 stop
$590ITA Airways
Sun, Sep 13 - Tue, Sep 22
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m
1 stop
ITA Airways Logo
3:00 pm - 10:55 pm
ORD
-
TRS
24h 55m
1 stop
$682ITA Airways
Sun, Sep 13 - Wed, Sep 23
ITA Airways Logo
7:15 pm - 1:10 pm
TRS
-
ORD
24h 55m
1 stop
ITA Airways Logo
3:00 pm - 10:25 am
ORD
-
TRS
12h 25m
1 stop
$700ITA Airways
Sat, Jun 6 - Sat, Jun 20
ITA Airways Logo
7:15 pm - 1:10 pm
TRS
-
ORD
24h 55m
1 stop
ITA Airways Logo
3:00 pm - 10:55 pm
ORD
-
TRS
24h 55m
1 stop
$716ITA Airways
Sat, Jun 6 - Sat, Jun 20
ITA Airways Logo
7:15 pm - 1:10 pm
TRS
-
ORD
24h 55m
1 stop
ITA Airways Logo
3:00 pm - 10:55 pm
ORD
-
TRS
24h 55m
1 stop
$774ITA Airways
Tue, Jun 16 - Tue, Jun 23
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m
1 stop
ITA Airways Logo
8:55 am - 2:30 pm
ORD
-
TRS
22h 35m
2 stops
$793ITA Airways
Sun, Sep 13 - Sat, Sep 26
ITA Airways Logo
6:35 am - 8:39 pm
TRS
-
ORD
21h 04m
2 stops
ITA Airways Logo
3:00 pm - 6:30 pm
ORD
-
TRS
20h 30m
1 stop
$798ITA Airways
Wed, Sep 23 - Sun, Sep 27
ITA Airways Logo
6:35 am - 8:39 pm
TRS
-
ORD
21h 04m
2 stops
ITA Airways Logo
3:00 pm - 10:25 am
ORD
-
TRS
12h 25m
1 stop
$799ITA Airways
Wed, Sep 23 - Sun, Sep 27
Air France Logo
6:35 am - 5:49 pm
TRS
-
ORD
18h 14m
2 stops
Air France Logo
11:15 am - 2:30 pm
ORD
-
TRS
20h 15m
2 stops
$813Air France
Sat, Jun 6 - Sat, Jun 20
ITA Airways Logo
11:15 am - 1:10 pm
TRS
-
ORD
32h 55m
1 stop
ITA Airways Logo
3:00 pm - 10:25 am
ORD
-
TRS
12h 25m
1 stop
$814ITA Airways
Sat, Jun 6 - Sat, Jun 20

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KLM flights from Trieste to Chicago

Our best KLM deals on Trieste to Chicago flight tickets
KLM
Jun 6
TRS6:35 amTrieste Ronchi dei Legionari
16h 54m
2 stops
ORD4:29 pmChicago O'Hare Intl
Jun 20
ORD2:35 pmChicago O'Hare Intl
16h 55m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
$822
KLM
Jun 6
TRS6:35 amTrieste Ronchi dei Legionari
16h 54m
2 stops
ORD4:29 pmChicago O'Hare Intl
Jun 20
ORD2:35 pmChicago O'Hare Intl
16h 55m
2 stops
TRS2:30 pmTrieste Ronchi dei Legionari
$1,011
KLM
Jun 16
TRS6:35 amTrieste Ronchi dei Legionari
22h 13m
2 stops
ORD9:48 pmChicago O'Hare Intl
Jun 23
ORD5:57 pmChicago O'Hare Intl
17h 33m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
$1,038

ITA Airways flights from Trieste to Chicago

Our best ITA Airways deals on Trieste to Chicago flight tickets
ITA Airways
Sep 13
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
Sep 22
ORD3:00 pmChicago O'Hare Intl
24h 55m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
$590
ITA Airways
Sep 13
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
Sep 23
ORD3:00 pmChicago O'Hare Intl
24h 55m
1 stop
TRS10:55 pmTrieste Ronchi dei Legionari
$682
ITA Airways
Jun 6
TRS7:15 pmTrieste Ronchi dei Legionari
24h 55m
1 stop
ORD1:10 pmChicago O'Hare Intl
Jun 20
ORD3:00 pmChicago O'Hare Intl
12h 25m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
$700

momondo Fare Finder

 
Customize your flight search to find flights from Trieste to Chicago 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 May 7, 2026.
Use the filters below to find and compare flights from Trieste to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sun 9/13

6:35 am-1:10 pm

1 stop13h 35m

Chicago O'Hare Intl

Tue 9/22

3:00 pm-10:55 pm

1 stop24h 55m

$590

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sun 9/13

6:35 am-1:10 pm

1 stop13h 35m

Chicago O'Hare Intl

Wed 9/23

3:00 pm-10:55 pm

1 stop24h 55m

$682

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 6/6

7:15 pm-1:10 pm

1 stop24h 55m

Chicago O'Hare Intl

Sat 6/20

3:00 pm-10:25 am

1 stop12h 25m

$700

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 6/6

7:15 pm-1:10 pm

1 stop24h 55m

Chicago O'Hare Intl

Sat 6/20

3:00 pm-10:55 pm

1 stop24h 55m

$716

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Tue 6/16

7:15 pm-1:10 pm

1 stop24h 55m

Chicago O'Hare Intl

Tue 6/23

3:00 pm-10:55 pm

1 stop24h 55m

$774

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sun 9/13

6:35 am-1:10 pm

1 stop13h 35m

Chicago O'Hare Intl

Sat 9/26

8:55 am-2:30 pm

2 stops22h 35m

$793

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Wed 9/23

6:35 am-8:39 pm

2 stops21h 04m

Chicago O'Hare Intl

Sun 9/27

3:00 pm-6:30 pm

1 stop20h 30m

$798
Quickest round-trip

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Wed 9/23

6:35 am-8:39 pm

2 stops21h 04m

Chicago O'Hare Intl

Sun 9/27

3:00 pm-10:25 am

1 stop12h 25m

$799

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 6/6

6:35 am-5:49 pm

2 stops18h 14m

Chicago O'Hare Intl

Sat 6/20

11:15 am-2:30 pm

2 stops20h 15m

$813

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

Sat 6/6

11:15 am-1:10 pm

1 stop32h 55m

Chicago O'Hare Intl

Sat 6/20

3:00 pm-10:25 am

1 stop12h 25m

$814

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Trieste to Chicago

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 Trieste Ronchi dei Legionari to Chicago?

TAP AIR PORTUGAL and United Airlines are the most popular carriers operating from Trieste Ronchi dei Legionari to Chicago

What airlines fly to Chicago?

United Airlines, Iberia and Lufthansa are the top three most popular airlines that fly to Chicago from Trieste according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 3 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

When to book flights from Trieste to Chicago

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

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

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

Fastest flight time

13h 35m

Direct flights

None
The fastest flight from Trieste to Chicago takes 13h 35m
There are no direct flights from Trieste to Chicago. There are no popular flight routes from Trieste to Chicago.
Search flight deals

Frequently asked questions about flying from Trieste to Chicago

  • How far is Trieste Ronchi dei Legionari to Chicago by plane?

    A flight from Trieste Ronchi dei Legionari to Chicago will travel around 4695.7 mi. By plane, this route typically takes 13h 35m.

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

    Prices for flights from Trieste Ronchi dei Legionari Airport to Chicago are updated daily.

  • How old do you have to be to fly from Trieste Ronchi dei Legionari Airport to Chicago?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Trieste Ronchi dei Legionari Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Saint Joseph
Benton Harbor
Portage
Lansing
Valparaiso
Munster
Schererville
Crown Point
Monticello
Chesterton
Porter
Griffith
Saint John

Why use momondo?

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

It is quick and easy to find Trieste to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

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

Yes. All flights to Chicago from Trieste on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Trieste to Chicago 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 Trieste to Chicago right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Trieste to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport