How does KAYAK find such low prices on flights from Illinois to Trieste?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Trieste.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Trieste?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Trieste from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Trieste?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Trieste with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Trieste?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Trieste from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$448 CHEAP FLIGHTS from Illinois to Trieste

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Illinois to Trieste

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Illinois to Trieste

Fri, Oct 16 - Thu, Oct 22

3:00 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

12h 25m1 stop Rome Fiumicino

7:15 pm - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

24h 55m1 stop Rome Fiumicino

$785ITA Airways

Fri, Oct 16 - Thu, Oct 22

10:30 pm - 9:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 25m1 stop Frankfurt am Main

6:15 am - 12:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 40m1 stop Frankfurt am Main

$885Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

10:30 pm - 9:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 25m1 stop Frankfurt am Main

2:40 pm - 12:35 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

28h 55m2 stops Frankfurt am Main Munich Franz Josef Strauss

$924Lufthansa

Fri, Oct 16 - Thu, Oct 22

9:40 pm - 9:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

17h 15m2 stops Munich Franz Josef Strauss Frankfurt am Main

2:40 pm - 12:35 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

28h 55m2 stops Frankfurt am Main Munich Franz Josef Strauss

$964Lufthansa

Fri, Oct 16 - Thu, Oct 22

7:25 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

20h 30m3 stops Reykjavik Keflavik Intl London Heathrow Rome Fiumicino

3:15 pm - 2:15 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

30h 00m3 stops Rome Fiumicino Barcelona-El Prat Amsterdam Schiphol

$1,020Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

7:25 pm - 8:25 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

18h 00m2 stops Reykjavik Keflavik Intl Brussels Bruxelles-National

3:15 pm - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

28h 55m1 stop Rome Fiumicino

$1,041Multiple Airlines

Mon, Mar 1 - Fri, Mar 5

10:45 am - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 40m2 stops Newark Rome Fiumicino

6:35 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Rome Fiumicino

$1,061United Airlines

Fri, Oct 16 - Thu, Oct 22

7:25 pm - 9:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

19h 30m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Frankfurt am Main

6:00 pm - 4:00 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

29h 00m2 stops Milan Linate Lisbon Humberto Delgado

$1,070Multiple Airlines

Mon, Mar 1 - Fri, Mar 5

1:10 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

14h 15m2 stops Newark Rome Fiumicino

6:35 am - 6:47 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

19h 12m2 stops Rome Fiumicino Newark

$1,071United Airlines

Mon, Mar 1 - Fri, Mar 5

8:00 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

31h 25m2 stops Newark Rome Fiumicino

6:35 am - 1:10 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

13h 35m1 stop Rome Fiumicino

$1,074United Airlines

Useful Info

Cheapest flight	$448

Flight from Chicago to Trieste

How does KAYAK find such low prices on flights from Illinois to Trieste?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Trieste.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Trieste?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Trieste from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Trieste?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Trieste with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Trieste?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Trieste from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.