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Trieste

$544+ Cheap flights from O'Hare Intl (ORD) to Trieste (TRS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TRS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Trieste

Cheapest flights from O'Hare Intl to Trieste
Explore the most affordable flight options available from O'Hare Intl to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Trip.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:00 pm
ORD
-
TRS
2 stops21h 55m
Multiple Airlines
Sat 4/186:35 am
TRS
-
ORD
2 stops40h 25m
Multiple Airlines
Deal found 1/28$672
This oojo deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:55 am
ORD
-
TRS
2 stops22h 35m
ITA Airways
Sun 9/203:15 pm
TRS
-
ORD
2 stops34h 18m
ITA Airways
Deal found 1/28$693
This Travelocity deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:15 pm
ORD
-
TRS
2 stops21h 40m
Multiple Airlines
Wed 4/157:15 pm
TRS
-
ORD
2 stops51h 45m
Multiple Airlines
Deal found 1/28$699
This KAYAK deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:15 pm
ORD
-
TRS
2 stops21h 40m
TAP AIR PORTUGAL
Tue 4/213:15 pm
TRS
-
ORD
2 stops31h 45m
TAP AIR PORTUGAL
Deal found 1/28$714
This KAYAK deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:00 pm
ORD
-
TRS
2 stops41h 30m
TAP AIR PORTUGAL
Tue 4/213:15 pm
TRS
-
ORD
2 stops31h 45m
TAP AIR PORTUGAL
Deal found 1/28$724
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:15 pm
ORD
-
TRS
2 stops21h 40m
TAP AIR PORTUGAL
Thu 4/163:15 pm
TRS
-
ORD
2 stops31h 45m
TAP AIR PORTUGAL
Deal found 1/28$732
This KAYAK deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:15 pm
ORD
-
TRS
2 stops21h 40m
TAP AIR PORTUGAL
Sat 4/186:35 am
TRS
-
ORD
2 stops40h 25m
TAP AIR PORTUGAL
Deal found 1/28$734
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:00 pm
ORD
-
TRS
2 stops41h 30m
TAP AIR PORTUGAL
Thu 4/163:15 pm
TRS
-
ORD
2 stops31h 45m
TAP AIR PORTUGAL
Deal found 1/28$743
This KAYAK deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:00 pm
ORD
-
TRS
2 stops41h 30m
TAP AIR PORTUGAL
Fri 4/176:35 am
TRS
-
ORD
2 stops40h 40m
TAP AIR PORTUGAL
Deal found 1/28$744
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:15 pm
ORD
-
TRS
2 stops21h 40m
TAP AIR PORTUGAL
Fri 4/176:35 am
TRS
-
ORD
2 stops40h 40m
TAP AIR PORTUGAL
Deal found 1/28$752

Find flight deals from O'Hare Intl to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 29, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$672
(Trip.com)

One-way from

$544
(TAP AIR PORTUGAL)
Provider with most accurate pricing for Chicago O'Hare Intl-Trieste Ronchi dei Legionari flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Trieste Ronchi dei Legionari flights.
Search Deals
From Chicago O'Hare Intl to Trieste Ronchi dei Legionari
Search Deals
One-way flight from Chicago O'Hare Intl to Trieste Ronchi dei Legionari
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Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Trieste that are best for you.

Fly from

O'Hare Intl

Fly to

Trieste

Route

Depart

Return

Price

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 4/5

6:00 pm-6:30 pm

2 stops41h 30m

Trieste Ronchi dei Legionari

Thu 4/16

3:15 pm-4:00 pm

2 stops31h 45m

$743

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sat 4/4

6:15 pm-10:55 pm

2 stops21h 40m

Trieste Ronchi dei Legionari

Sat 4/18

6:35 am-4:00 pm

2 stops40h 25m

$752

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sat 5/2

6:15 pm-10:55 pm

2 stops21h 40m

Trieste Ronchi dei Legionari

Sat 5/9

11:15 am-4:00 pm

2 stops35h 45m

$768

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Sun 4/5

6:00 pm-6:30 pm

2 stops41h 30m

Trieste Ronchi dei Legionari

Wed 4/15

3:15 pm-4:00 pm

2 stops55h 45m

$780

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/8

6:00 pm-6:30 pm

2 stops41h 30m

Trieste Ronchi dei Legionari

Tue 4/21

3:15 pm-4:00 pm

2 stops31h 45m

$817

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/8

6:00 pm-6:30 pm

2 stops41h 30m

Trieste Ronchi dei Legionari

Fri 4/17

6:35 am-4:15 pm

2 stops40h 40m

$855

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Mon 4/6

9:15 am-2:30 pm

2 stops22h 15m

Trieste Ronchi dei Legionari

Tue 4/14

7:15 pm-6:23 pm

2 stops30h 08m

$858

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Tue 4/7

8:45 am-10:25 am

2 stops18h 40m

Trieste Ronchi dei Legionari

Tue 4/14

7:15 pm-6:23 pm

2 stops30h 08m

$858

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/8

9:15 am-10:55 pm

2 stops30h 40m

Trieste Ronchi dei Legionari

Wed 4/15

6:35 am-6:23 pm

2 stops18h 48m

$858

ChicagoTrieste

ORD - TRS

ORDTRS

Chicago O'Hare Intl

Wed 4/1

11:17 am-6:30 pm

2 stops24h 13m

Trieste Ronchi dei Legionari

Wed 4/15

6:35 am-6:23 pm

2 stops18h 48m

$858

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 23 results
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Compare providers for flights from O'Hare Intl to Trieste

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Trieste in January.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Trieste flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago O'Hare Intl Airport-Trieste flight deals on Cheapflights vs. Ovago 90-95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Trieste flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Trieste flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Trieste

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Trieste?

Currently, April is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Trieste (average of $428). Flying from Chicago O'Hare Intl Airport to Trieste in June is currently the most expensive (average of $777). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Trieste. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Trieste from Chicago O'Hare Intl?

    Most people fly into Trieste Ronchi dei Legionari (TRS) if they book a flight to Trieste from Chicago O'Hare Intl. On average, Ronchi dei Legionari has 0 inbound flights from Chicago O'Hare Intl per day from 0 airlines. Trieste Ronchi dei Legionari is conveniently located just 18.2 mi from Trieste’s city center.

  • How long is the flight from Chicago O'Hare Intl Airport to Trieste?

    Departing from Chicago O'Hare Intl Airport to Trieste will take you 41h 30m. Airlines will cover a distance of 4683 mi.

  • Can I find deals for flights from O'Hare Intl to Trieste that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Trieste?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Trieste.

  • Can I find deals for business class flights from O'Hare Intl to Trieste?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Trieste?

    Currently, April is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Trieste (average of $428). Flying from Chicago O'Hare Intl Airport to Trieste in June is currently the most expensive (average of $777). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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