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.

$281 CHEAP FLIGHTS from Illinois to Trieste

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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

Last minute

Recent round-trip flight deals from Illinois to Trieste

Fri, Oct 16 - Thu, Oct 22

3:00 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

24h 55m1 stop Rome Fiumicino

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

28h 55m1 stop Rome Fiumicino

$738ITA Airways

Wed, Nov 4 - Wed, Nov 11

7:00 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 30m2 stops Lisbon Humberto Delgado Rome Fiumicino

3:15 pm - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

55h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$862TAP AIR PORTUGAL

Mon, Nov 2 - Mon, Nov 9

6:30 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

21h 25m3 stops Reykjavik Keflavik Intl Paris Charles de Gaulle Rome Fiumicino

3:15 pm - 5:20 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

33h 05m3 stops Rome Fiumicino Paris Charles de Gaulle Reykjavik Keflavik Intl

$884Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

4:05 pm - 1:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

14h 50m1 stop Frankfurt am Main

6:15 am - 8:06 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

20h 51m2 stops Frankfurt am Main Vancouver Intl

$884Multiple Airlines

Mon, Nov 2 - Mon, Nov 9

6:30 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

17h 00m2 stops Reykjavik Keflavik Intl Rome Fiumicino

10:45 am - 6:20 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

14h 35m1 stop Dublin

$905Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

3:35 pm - 1:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

15h 20m2 stops Munich Franz Josef Strauss Frankfurt am Main

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

19h 00m2 stops Frankfurt am Main Munich Franz Josef Strauss

$921Lufthansa

Mon, Nov 2 - Mon, Nov 9

6:30 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

17h 00m2 stops Reykjavik Keflavik Intl Rome Fiumicino

11:15 am - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

59h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$939Multiple Airlines

Mon, Nov 2 - Mon, Nov 9

6:30 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

21h 25m3 stops Reykjavik Keflavik Intl Paris Charles de Gaulle Rome Fiumicino

3:15 pm - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

55h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$968Multiple Airlines

Fri, Oct 16 - Thu, Oct 22

8:45 am - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

22h 45m3 stops Montreal Pierre Elliott Trudeau Intl Naples Rome Fiumicino

7:15 pm - 3:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

27h 40m3 stops Rome Fiumicino Naples Zurich

$984Multiple Airlines

Wed, Nov 4 - Wed, Nov 11

6:30 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

21h 25m3 stops Reykjavik Keflavik Intl Paris Charles de Gaulle Rome Fiumicino

3:15 pm - 3:30 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

55h 15m2 stops Rome Fiumicino Lisbon Humberto Delgado

$996Multiple Airlines

Recent last minute flight deals from Illinois to Trieste

Wed, Sep 23 - Sun, Sep 27

3:00 pm - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 30m1 stop Rome Fiumicino

6:35 am - 6:41 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

19h 06m2 stops Rome Fiumicino Washington, D.C. Dulles Intl

$1,784ITA Airways

Wed, Sep 23 - Sun, Sep 27

9:07 am - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

18h 18m2 stops Boston Logan Intl Rome Fiumicino

6:35 am - 6:41 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

19h 06m2 stops Rome Fiumicino Washington, D.C. Dulles Intl

$2,541ITA Airways

Wed, Sep 23 - Sun, Sep 27

3:00 pm - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 30m1 stop Rome Fiumicino

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

13h 35m1 stop Rome Fiumicino

$3,279ITA Airways

Thu, Sep 24 - Sun, Sep 27

8:35 pm - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

38h 55m2 stops Dubai Intl Rome Fiumicino

7:15 pm - 3:55 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

27h 40m2 stops Rome Fiumicino Dubai Intl

$3,281Emirates

Thu, Sep 24 - Sun, Sep 27

3:50 pm - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

11h 35m1 stop Rome Fiumicino

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

13h 35m1 stop Rome Fiumicino

$4,559United Airlines

Wed, Sep 23 - Fri, Sep 25

9:38 am - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

25h 52m3 stops Boston Logan Intl Lisbon Humberto Delgado Rome Fiumicino

3:15 pm - 4:05 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

31h 50m2 stops Rome Fiumicino Lisbon Humberto Delgado

$6,752Multiple Airlines

Wed, Sep 23 - Fri, Sep 25

6:00 pm - 10:55 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

21h 55m2 stops Lisbon Humberto Delgado Rome Fiumicino

11:15 am - 4:05 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

35h 50m2 stops Rome Fiumicino Lisbon Humberto Delgado

$6,873TAP AIR PORTUGAL

Wed, Sep 23 - Fri, Sep 25

10:30 am - 10:25 amORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

40h 55m2 stops Cairo Rome Fiumicino

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

24h 55m1 stop Rome Fiumicino

$7,317Multiple Airlines

Wed, Sep 23 - Fri, Sep 25

3:00 pm - 2:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

16h 30m1 stop Rome Fiumicino

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

24h 55m1 stop Rome Fiumicino

$8,630ITA Airways

Wed, Sep 23 - Fri, Sep 25

9:38 am - 6:30 pmORD Chicago O'Hare Intl-TRS Trieste Ronchi dei Legionari

25h 52m3 stops Boston Logan Intl Lisbon Humberto Delgado Rome Fiumicino

11:15 am - 7:01 pmTRS Trieste Ronchi dei Legionari-ORD Chicago O'Hare Intl

38h 46m3 stops Rome Fiumicino Lisbon Humberto Delgado Boston Logan Intl

$10,493TAP AIR PORTUGAL

Useful Info

Cheapest flight	$281

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.