Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Chicago to Trieste from $400

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 to Trieste departing on 6/11. 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
1 adult, Economy, 0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
ITA Airways Logo
3:00 pm - 10:25 am
ORD
-
TRS
12h 25m
1 stop
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m
1 stop
$995ITA Airways
Mon, May 11 - Mon, May 18
KLM Logo
12:52 pm - 2:30 pm
MDW
-
TRS
18h 38m
2 stops
KLM Logo
3:15 pm - 6:36 pm
TRS
-
MDW
34h 21m
2 stops
$1,006KLM
Sun, Apr 26 - Sat, May 2
KLM Logo
11:19 am - 2:30 pm
ORD
-
TRS
20h 11m
2 stops
KLM Logo
3:15 pm - 8:16 pm
TRS
-
ORD
36h 01m
2 stops
$1,006KLM
Sun, Apr 26 - Sat, May 2
ITA Airways Logo
3:00 pm - 2:30 pm
ORD
-
TRS
16h 30m
1 stop
ITA Airways Logo
6:35 am - 1:10 pm
TRS
-
ORD
13h 35m
1 stop
$1,008ITA Airways
Mon, May 11 - Mon, May 18
Lufthansa Logo
4:05 pm - 1:55 pm
ORD
-
TRS
14h 50m
1 stop
Lufthansa Logo
2:40 pm - 7:55 pm
TRS
-
ORD
12h 15m
1 stop
$1,021Lufthansa
Fri, May 8 - Fri, May 15
Lufthansa Logo
10:30 pm - 10:25 pm
ORD
-
TRS
16h 55m
1 stop
Lufthansa Logo
2:50 pm - 8:47 pm
TRS
-
ORD
36h 57m
2 stops
$1,046Lufthansa
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
3:00 pm - 10:25 am
ORD
-
TRS
12h 25m
1 stop
Multiple Airlines Logo
6:00 am - 2:25 pm
TRS
-
ORD
39h 25m
2 stops
$1,050Multiple Airlines
Mon, May 11 - Mon, May 18
Lufthansa Logo
3:35 pm - 10:25 pm
ORD
-
TRS
23h 50m
2 stops
Lufthansa Logo
2:50 pm - 8:47 pm
TRS
-
ORD
36h 57m
2 stops
$1,066Lufthansa
Mon, May 11 - Mon, May 18
Lufthansa Logo
9:40 pm - 9:55 pm
ORD
-
TRS
17h 15m
2 stops
Lufthansa Logo
2:40 pm - 7:55 pm
TRS
-
ORD
12h 15m
1 stop
$1,067Lufthansa
Fri, May 8 - Fri, May 15
KLM Logo
10:59 am - 6:30 pm
MDW
-
TRS
24h 31m
2 stops
KLM Logo
3:15 pm - 6:33 pm
TRS
-
MDW
34h 18m
2 stops
$1,085KLM
Mon, May 11 - Mon, May 18

Lufthansa flights from Chicago to Trieste

Our best Lufthansa deals on Chicago to Trieste flight tickets
Lufthansa
May 8
ORD4:05 pmChicago O'Hare Intl
14h 50m
1 stop
TRS1:55 pmTrieste Ronchi dei Legionari
May 15
TRS2:40 pmTrieste Ronchi dei Legionari
12h 15m
1 stop
ORD7:55 pmChicago O'Hare Intl
$1,021
Lufthansa
May 11
ORD10:30 pmChicago O'Hare Intl
16h 55m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
May 18
TRS2:50 pmTrieste Ronchi dei Legionari
36h 57m
2 stops
ORD8:47 pmChicago O'Hare Intl
$1,046
Lufthansa
May 11
ORD3:35 pmChicago O'Hare Intl
23h 50m
2 stops
TRS10:25 pmTrieste Ronchi dei Legionari
May 18
TRS2:50 pmTrieste Ronchi dei Legionari
36h 57m
2 stops
ORD8:47 pmChicago O'Hare Intl
$1,066

ITA Airways flights from Chicago to Trieste

Our best ITA Airways deals on Chicago to Trieste flight tickets
ITA Airways
May 11
ORD3:00 pmChicago O'Hare Intl
12h 25m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
May 18
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$995
ITA Airways
May 11
ORD3:00 pmChicago O'Hare Intl
16h 30m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
May 18
TRS6:35 amTrieste Ronchi dei Legionari
13h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,008
ITA Airways
Jul 20
ORD3:00 pmChicago O'Hare Intl
12h 25m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Jul 25
TRS7:15 pmTrieste Ronchi dei Legionari
24h 55m
1 stop
ORD1:10 pmChicago O'Hare Intl
$1,157

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 March 28, 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

Cheapest round-trip
Quickest round-trip

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 5/11

3:00 pm-10:25 am

1 stop12h 25m

Trieste Ronchi dei Legionari

Mon 5/18

6:35 am-1:10 pm

1 stop13h 35m

$995

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Sun 4/26

12:52 pm-2:30 pm

2 stops18h 38m

Trieste Ronchi dei Legionari

Sat 5/2

3:15 pm-6:36 pm

2 stops34h 21m

$1,006

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 4/26

11:19 am-2:30 pm

2 stops20h 11m

Trieste Ronchi dei Legionari

Sat 5/2

3:15 pm-8:16 pm

2 stops36h 01m

$1,006

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 5/11

3:00 pm-2:30 pm

1 stop16h 30m

Trieste Ronchi dei Legionari

Mon 5/18

6:35 am-1:10 pm

1 stop13h 35m

$1,008

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 5/8

4:05 pm-1:55 pm

1 stop14h 50m

Trieste Ronchi dei Legionari

Fri 5/15

2:40 pm-7:55 pm

1 stop12h 15m

$1,021

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 5/11

10:30 pm-10:25 pm

1 stop16h 55m

Trieste Ronchi dei Legionari

Mon 5/18

2:50 pm-8:47 pm

2 stops36h 57m

$1,046

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 5/11

3:00 pm-10:25 am

1 stop12h 25m

Trieste Ronchi dei Legionari

Mon 5/18

6:00 am-2:25 pm

2 stops39h 25m

$1,050

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 5/11

3:35 pm-10:25 pm

2 stops23h 50m

Trieste Ronchi dei Legionari

Mon 5/18

2:50 pm-8:47 pm

2 stops36h 57m

$1,066

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Fri 5/8

9:40 pm-9:55 pm

2 stops17h 15m

Trieste Ronchi dei Legionari

Fri 5/15

2:40 pm-7:55 pm

1 stop12h 15m

$1,067

ChicagoTrieste

MDW - TRS

MDWTRS

Chicago Midway

Mon 5/11

10:59 am-6:30 pm

2 stops24h 31m

Trieste Ronchi dei Legionari

Mon 5/18

3:15 pm-6:33 pm

2 stops34h 18m

$1,085

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Trieste from

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

14h 50m

Direct flights

None
The fastest flight from Chicago to Trieste takes 14h 50m
There are no direct flights from Chicago to Trieste. There are no popular flight routes from Chicago to Trieste.
Search flight deals

  • 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 14h 50m.

  • 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?

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?

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.

An easier way to manage your Trieste trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 4/27
Mon 5/4
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Italy

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