$460 Cheap Flights from Denver (DEN) to Trieste (TRS)

View $460 flight on Tue, Jan 6, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS)

Cheap Flights from Denver to Trieste (DEN-TRS)

Prices were available within the past 7 days and start at $460 for one-way flights and $649 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$649 Roundtrip, found 15 hours ago
$649
Roundtrip
found 15 hours ago
Select Lufthansa flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $649 found 15 hours ago
Air Canada
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$651 Roundtrip, found 15 hours ago
$651
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $651 found 15 hours ago
Air Canada
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$657 Roundtrip, found 15 hours ago
$657
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $657 found 15 hours ago
Air Canada
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$659 Roundtrip, found 15 hours ago
$659
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $659 found 15 hours ago
Lufthansa
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$662 Roundtrip, found 15 hours ago
$662
Roundtrip
found 15 hours ago
Select Lufthansa flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $662 found 15 hours ago
Lufthansa
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$663 Roundtrip, found 15 hours ago
$663
Roundtrip
found 15 hours ago
Select Lufthansa flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $663 found 15 hours ago
Air Canada
Mon, Jan 19 - Wed, Feb 11
DEN
Denver
TRS
Trieste
$665 Roundtrip, found 15 hours ago
$665
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Mon, Jan 19 from Denver to Trieste, returning Wed, Feb 11, priced at $665 found 15 hours ago
United
Mon, Feb 9 - Tue, Apr 14
DEN
Denver
TRS
Trieste
$718 Roundtrip, found 1 day ago
$718
Roundtrip
found 1 day ago
Select United flight, departing Mon, Feb 9 from Denver to Trieste, returning Tue, Apr 14, priced at $718 found 1 day ago
Brussels Airlines
Thu, Feb 12 - Tue, Apr 14
DEN
Denver
TRS
Trieste
$1,471 Roundtrip, found 1 day ago
$1,471
Roundtrip
found 1 day ago
Select Brussels Airlines flight, departing Thu, Feb 12 from Denver to Trieste, returning Tue, Apr 14, priced at $1,471 found 1 day ago
Swiss International Air Lines
Wed, Jun 3 - Wed, Jul 15
DEN
Denver
TRS
Trieste
$1,497 Roundtrip, found 4 days ago
$1,497
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Wed, Jun 3 from Denver to Trieste, returning Wed, Jul 15, priced at $1,497 found 4 days ago

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS) cost?
Secure a cheap one-way flight from $460 or cheap return flight from $649 from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS)?
January is the cheapest month to fly from DEN to TRS. Avoiding peak travel times is often the key to better flight prices.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DEN to TRS flight.
How many flights per day from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS)?
Nonstop flights from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DEN to TRS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS)?
Select a flight from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS) that takes off before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS) last-minute?
Booking your flight from DEN to TRS shortly before your journey is usually more expensive. But if you're flexible with your travel dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a DEN to TRS flight and hotel package?
Securing a DEN to TRS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our wide range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Friuli Venezia Giulia Airport (TRS)?
In most cases, you're able to cancel or reschedule your DEN to TRS flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Origin airport
Denver Intl.
Destination airport
Friuli Venezia Giulia
Airlines serving
Brussels Airlines, ITA Airways, Lufthansa, United
Roundtrip price
$648
Distance
5392 mi

Book with confidence

Denver to Trieste Flights

The cheapest times to fly from Denver to Trieste

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Trieste are during the month of January. You can find some of the cheapest flights from Denver to Trieste with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Trieste

Sunday is one of the best days to book for cheap flights from Denver to Trieste: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Trieste

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Trieste in 2025. You can also book with separate airlines for your outbound and return journeys, from $460 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Trieste flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Trieste airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Trieste Flights

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*Available to One Key members.