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Trieste

$433+ Cheap flights from Denver (DEN) 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — TRS
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
1 adult, Economy
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Cheap flight deals from Denver to Trieste

Cheapest flights from Denver to Trieste
Explore the most affordable flight options available from Denver to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.

This Travelocity deal was found by Cheapflights users on 5/7. 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.
Mon 7/2711:25 am
DEN
-
TRS
2 stops18h 30m
Multiple Airlines
Thu 8/206:15 am
TRS
-
DEN
1 stop17h 25m
Multiple Airlines
Deal found 5/7$939
This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:40 pm
DEN
-
TRS
1 stop20h 45m
Lufthansa
Thu 8/206:15 am
TRS
-
DEN
1 stop17h 25m
Lufthansa
Deal found 5/7$942
This Travelocity deal was found by Cheapflights users on 5/7. 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.
Sun 7/2611:30 am
DEN
-
TRS
2 stops18h 15m
Multiple Airlines
Thu 8/206:15 am
TRS
-
DEN
1 stop17h 25m
Multiple Airlines
Deal found 5/7$944
This KAYAK deal was found by Cheapflights users on 5/9. 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 9/275:40 pm
DEN
-
TRS
1 stop20h 35m
Lufthansa
Fri 10/26:10 am
TRS
-
DEN
1 stop17h 30m
Lufthansa
Deal found 5/9$1,027
This KAYAK deal was found by Cheapflights users on 5/9. 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.
Tue 9/295:42 pm
DEN
-
TRS
2 stops20h 33m
Lufthansa
Tue 10/66:20 am
TRS
-
DEN
1 stop17h 20m
Lufthansa
Deal found 5/9$1,032
This KAYAK deal was found by Cheapflights users on 5/9. 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 9/275:40 pm
DEN
-
TRS
1 stop20h 35m
Lufthansa
Tue 10/62:45 pm
TRS
-
DEN
2 stops16h 33m
Lufthansa
Deal found 5/9$1,037
This KAYAK deal was found by Cheapflights users on 5/9. 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.
Tue 9/295:42 pm
DEN
-
TRS
2 stops20h 33m
Lufthansa
Thu 10/82:40 pm
TRS
-
DEN
2 stops16h 38m
Lufthansa
Deal found 5/9$1,042
This KAYAK deal was found by Cheapflights users on 5/9. 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 9/265:42 pm
DEN
-
TRS
2 stops36h 03m
Lufthansa
Fri 10/26:10 am
TRS
-
DEN
1 stop17h 30m
Lufthansa
Deal found 5/9$1,044

Find flight deals from Denver to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 May 10, 2026.

Round-trip from

$939
(Travelocity)

One-way from

$433
(Kiwi.com)
From Denver Intl to Trieste Ronchi dei Legionari
Search Deals
One-way flight from Denver Intl to Trieste Ronchi dei Legionari
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 May 10, 2026.
Use the filters below to find and compare flights from Denver to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Mon 7/27

11:25 am-1:55 pm

2 stops18h 30m

Trieste Ronchi dei Legionari

Thu 8/20

6:15 am-3:40 pm

1 stop17h 25m

$939

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Mon 7/27

5:40 pm-10:25 pm

1 stop20h 45m

Trieste Ronchi dei Legionari

Thu 8/20

6:15 am-12:30 am

2 stops26h 15m

$971
Quickest round-trip

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Mon 9/28

5:40 pm-1:55 pm

1 stop12h 15m

Trieste Ronchi dei Legionari

Wed 10/7

2:40 pm-11:18 pm

2 stops16h 38m

$1,037

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 9/30

6:00 am-10:25 am

2 stops20h 25m

Trieste Ronchi dei Legionari

Fri 10/2

6:35 am-7:22 pm

2 stops20h 47m

$1,247

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 9/30

6:00 am-10:25 am

2 stops20h 25m

Trieste Ronchi dei Legionari

Tue 10/6

6:35 am-5:35 pm

2 stops19h 00m

$1,247

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 9/30

6:00 am-10:25 am

2 stops20h 25m

Trieste Ronchi dei Legionari

Wed 10/7

6:35 am-6:11 pm

2 stops19h 36m

$1,247

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sun 9/27

9:55 am-10:25 am

2 stops16h 30m

Trieste Ronchi dei Legionari

Wed 10/7

6:35 am-6:11 pm

2 stops19h 36m

$1,247

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 5/20

7:45 am-10:25 am

2 stops42h 40m

Trieste Ronchi dei Legionari

Tue 5/26

6:35 am-7:00 pm

2 stops20h 25m

$1,366

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Fri 5/22

6:15 pm-9:55 pm

2 stops19h 40m

Trieste Ronchi dei Legionari

Mon 5/25

2:50 pm-7:45 pm

2 stops36h 55m

$1,388

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 5/20

5:30 pm-10:25 am

1 stop32h 55m

Trieste Ronchi dei Legionari

Mon 5/25

6:35 am-10:34 am

2 stops35h 59m

$1,422

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 13 resultsSorted by cheapest first
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Best time to book a flight from Denver to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Denver 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.

Related info for your journey

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

  • How long is the flight from Denver to Trieste?

    Airlines like Lufthansa and United Airlines fly from Denver to Trieste in about 20h 25m. The time it takes to get you to your destination can typically vary by up to 20m. The distance between Denver and Trieste is about 5388 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Denver to Trieste that include hotel bookings?

    Yes. In addition to deals on Denver to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Trieste?

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

  • Can I find deals for business class flights from Denver to Trieste?

    Yes. Cheapflights offers flight deals from Denver 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.

See more FAQs

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Complete your trip

Complete your trip to Trieste by adding a car rental and/or hotel reservation to your travel itinerary.
Trieste car rentals
Venice Marco Polo Airport car rentals
Trieste Ronchi dei Legionari Airport car rentals
Venice Treviso A. Canova Airport car rentals

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