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Cheap flights from Trieste to Illinois from $667

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to Illinois departing on 1/29. 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 Trieste to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
6:35 am - 9:35 pm
TRS
-
ORD
22h 00m2 stops
KLM Logo
1:57 pm - 6:30 pm
ORD
-
TRS
21h 33m2 stops
$667KLM
jeu., janv. 29 - mar., févr. 3
Lufthansa Logo
6:15 am - 1:10 pm
TRS
-
ORD
13h 55m1 stop
Lufthansa Logo
9:50 pm - 10:40 pm
ORD
-
TRS
17h 50m2 stops
$726Lufthansa
jeu., janv. 29 - mar., févr. 3
Lufthansa Logo
3:00 pm - 1:25 pm
TRS
-
ORD
29h 25m1 stop
Lufthansa Logo
6:25 pm - 10:25 pm
ORD
-
TRS
21h 00m1 stop
$731Lufthansa
dim., janv. 25 - dim., févr. 1
Lufthansa Logo
3:00 pm - 12:45 pm
TRS
-
ORD
28h 45m2 stops
Lufthansa Logo
6:25 pm - 10:25 pm
ORD
-
TRS
21h 00m1 stop
$734Lufthansa
dim., janv. 25 - dim., févr. 1
ITA Airways Logo
7:15 pm - 1:10 pm
TRS
-
ORD
24h 55m1 stop
ITA Airways Logo
9:20 am - 10:55 pm
ORD
-
TRS
30h 35m2 stops
$748ITA Airways
jeu., avr. 16 - lun., avr. 20
Lufthansa Logo
6:15 am - 1:10 pm
TRS
-
ORD
13h 55m1 stop
Lufthansa Logo
3:20 pm - 10:40 pm
ORD
-
TRS
24h 20m1 stop
$752Lufthansa
jeu., janv. 29 - mar., févr. 3
Lufthansa Logo
3:00 pm - 12:45 pm
TRS
-
ORD
28h 45m2 stops
Lufthansa Logo
9:50 pm - 10:25 pm
ORD
-
TRS
17h 35m2 stops
$764Lufthansa
dim., janv. 25 - dim., févr. 1
ITA Airways Logo
6:35 am - 6:25 pm
TRS
-
ORD
18h 50m2 stops
ITA Airways Logo
9:20 am - 10:55 pm
ORD
-
TRS
30h 35m2 stops
$947ITA Airways
jeu., avr. 16 - lun., avr. 20
United Airlines Logo
6:35 am - 1:05 pm
TRS
-
ORD
13h 30m1 stop
United Airlines Logo
3:40 pm - 10:25 am
ORD
-
TRS
11h 45m1 stop
$995United Airlines
jeu., avr. 16 - lun., avr. 20
Multiple Airlines Logo
2:40 pm - 8:05 am
TRS
-
ORD
24h 25m2 stops
Multiple Airlines Logo
9:09 pm - 10:25 pm
ORD
-
TRS
42h 16m2 stops
$1,069Multiple Airlines
mar., janv. 6 - sam., janv. 10

Lufthansa flights from Trieste to Illinois

Our best Lufthansa deals on Trieste to Illinois flight tickets
Lufthansa
Jan 29
TRS6:15 amTrieste Ronchi dei Legionari
13h 55m
1 stop
ORD1:10 pmChicago O'Hare Intl
Feb 3
ORD9:50 pmChicago O'Hare Intl
17h 50m
2 stops
TRS10:40 pmTrieste Ronchi dei Legionari
$726
Find similar
Lufthansa
Jan 25
TRS3:00 pmTrieste Ronchi dei Legionari
29h 25m
1 stop
ORD1:25 pmChicago O'Hare Intl
Feb 1
ORD6:25 pmChicago O'Hare Intl
21h 00m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
$731
Find similar
Lufthansa
Jan 25
TRS3:00 pmTrieste Ronchi dei Legionari
28h 45m
2 stops
ORD12:45 pmChicago O'Hare Intl
Feb 1
ORD6:25 pmChicago O'Hare Intl
21h 00m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
$734
Find similar

Turkish Airlines flights from Trieste to Illinois

Our best Turkish Airlines deals on Trieste to Illinois flight tickets
Turkish Airlines
Jan 29
TRS11:15 amTrieste Ronchi dei Legionari
53h 50m
2 stops
ORD10:05 amChicago O'Hare Intl
Feb 1
ORD8:20 pmChicago O'Hare Intl
39h 10m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
$1,122
Find similar
Turkish Airlines
Jan 29
TRS6:35 amTrieste Ronchi dei Legionari
34h 30m
2 stops
ORD10:05 amChicago O'Hare Intl
Feb 1
ORD8:20 pmChicago O'Hare Intl
39h 10m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
$1,125
Find similar
Turkish Airlines
Jan 6
TRS6:35 amTrieste Ronchi dei Legionari
42h 50m
2 stops
ORD6:25 pmChicago O'Hare Intl
Jan 10
ORD11:50 amChicago O'Hare Intl
28h 05m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
$1,845
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Trieste to Illinois 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 décembre 23, 2025.
Use the filters below to find and compare flights from Trieste to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

jeu. 1/29

6:35 am-9:35 pm

2 stops22h 00m

Chicago O'Hare Intl

mar. 2/3

1:57 pm-6:30 pm

2 stops21h 33m

$667

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

jeu. 1/29

6:15 am-1:10 pm

1 stop13h 55m

Chicago O'Hare Intl

mar. 2/3

9:50 pm-10:40 pm

2 stops17h 50m

$726

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

dim. 1/25

3:00 pm-1:25 pm

1 stop29h 25m

Chicago O'Hare Intl

dim. 2/1

6:25 pm-10:25 pm

1 stop21h 00m

$731

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

dim. 1/25

3:00 pm-12:45 pm

2 stops28h 45m

Chicago O'Hare Intl

dim. 2/1

6:25 pm-10:25 pm

1 stop21h 00m

$734

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

jeu. 4/16

7:15 pm-1:10 pm

1 stop24h 55m

Chicago O'Hare Intl

lun. 4/20

9:20 am-10:55 pm

2 stops30h 35m

$748

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

jeu. 1/29

6:15 am-1:10 pm

1 stop13h 55m

Chicago O'Hare Intl

mar. 2/3

3:20 pm-10:40 pm

1 stop24h 20m

$752

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

dim. 1/25

3:00 pm-12:45 pm

2 stops28h 45m

Chicago O'Hare Intl

dim. 2/1

9:50 pm-10:25 pm

2 stops17h 35m

$764

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

jeu. 4/16

6:35 am-6:25 pm

2 stops18h 50m

Chicago O'Hare Intl

lun. 4/20

9:20 am-10:55 pm

2 stops30h 35m

$947

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

jeu. 4/16

6:35 am-1:05 pm

1 stop13h 30m

Chicago O'Hare Intl

lun. 4/20

3:40 pm-10:25 am

1 stop11h 45m

$995

TriesteChicago

TRS - ORD

TRSORD

Trieste Ronchi dei Legionari

mar. 1/6

2:40 pm-8:05 am

2 stops24h 25m

Chicago O'Hare Intl

sam. 1/10

9:09 pm-10:25 pm

2 stops42h 16m

$1,069

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 Illinois from

How to get the cheapest flight ticket from Trieste to Illinois

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 Illinois?

Turkish Airlines and ITA Airways are the most popular carriers operating from Trieste Ronchi dei Legionari to Illinois

What airlines fly to Illinois?

United Airlines, Iberia and British Airways are the top three most popular airlines that fly to Illinois from Trieste according to our data. United Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Cheap Trieste to Illinois flight deals and tips

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

Fastest flight time

22h 00m

Direct flights

None
The fastest flight from Trieste to Illinois takes 22h 00m
There are no direct flights from Trieste to Illinois. There are no popular flight routes from Trieste to Illinois.
Search flight deals

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

    Prices for flights from Trieste Ronchi dei Legionari Airport to Illinois refresh daily.

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

    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 Trieste Ronchi dei Legionari Airport to Illinois.

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

    The required travel and health documents for your Illinois 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 Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Trieste to Illinois. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Trieste to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

Of course. momondo tracks the price of Trieste to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
jeu. 1/22
jeu. 1/29
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