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Cheap flights from Denver to Trieste from $488

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Trieste departing on 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Lufthansa Logo
4:45 pm - 10:35 pmDEN-TRS
21h 50m2 stops
Lufthansa Logo
6:30 am - 11:30 pmTRS-DEN
25h 00m2 stops
$782Lufthansa
Find Deal
Wed, Oct 8 - Wed, Oct 15
Lufthansa Logo
4:45 pm - 10:35 pmDEN-TRS
21h 50m2 stops
Lufthansa Logo
6:30 am - 1:35 pmTRS-DEN
15h 05m1 stop
$971Lufthansa
Find Deal
Wed, Oct 8 - Wed, Oct 15
Lufthansa Logo
3:50 pm - 10:35 pmDEN-TRS
22h 45m1 stop
Lufthansa Logo
6:30 am - 1:35 pmTRS-DEN
15h 05m1 stop
$1,055Lufthansa
Find Deal
Wed, Oct 8 - Wed, Oct 15
United Airlines Logo
11:15 am - 10:25 amDEN-TRS
15h 10m2 stops
United Airlines Logo
6:35 am - 4:41 pmTRS-DEN
18h 06m2 stops
$1,114United Airlines
Find Deal
Wed, Feb 25 - Wed, Mar 4

United Airlines flights from Denver to Trieste

Our best United Airlines deals on Denver to Trieste flight tickets
United Airlines
Feb 25
DEN11:15 amDenver Intl
15h 10m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Mar 4
TRS6:35 amTrieste Ronchi dei Legionari
18h 06m
2 stops
DEN4:41 pmDenver Intl
$1,114
Find similar
United Airlines
Sep 25
DEN11:15 amDenver Intl
15h 10m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Jan 16
TRS6:35 amTrieste Ronchi dei Legionari
20h 53m
2 stops
DEN7:28 pmDenver Intl
$1,631
Find similar
United Airlines
Sep 21
DEN8:00 amDenver Intl
18h 25m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Jan 16
TRS6:35 amTrieste Ronchi dei Legionari
20h 53m
2 stops
DEN7:28 pmDenver Intl
$1,686
Find similar

Lufthansa flights from Denver to Trieste

Our best Lufthansa deals on Denver to Trieste flight tickets
Lufthansa
Oct 8
DEN4:45 pmDenver Intl
21h 50m
2 stops
TRS10:35 pmTrieste Ronchi dei Legionari
Oct 15
TRS6:30 amTrieste Ronchi dei Legionari
25h 00m
2 stops
DEN11:30 pmDenver Intl
$782
Find similar
Lufthansa
Sep 24
DEN5:59 pmDenver Intl
20h 36m
1 stop
TRS10:35 pmTrieste Ronchi dei Legionari
Nov 11
TRS6:25 amTrieste Ronchi dei Legionari
17h 35m
1 stop
DEN4:00 pmDenver Intl
$925
Find similar
Lufthansa
Sep 24
DEN11:15 amDenver Intl
18h 50m
2 stops
TRS2:05 pmTrieste Ronchi dei Legionari
Nov 13
TRS6:25 amTrieste Ronchi dei Legionari
17h 35m
1 stop
DEN4:00 pmDenver Intl
$929
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
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

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 10/8

4:45 pm-10:35 pm

2 stops21h 50m

Trieste Ronchi dei Legionari

Wed 10/15

6:30 am-11:30 pm

2 stops25h 00m

$782

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 10/8

4:45 pm-10:35 pm

2 stops21h 50m

Trieste Ronchi dei Legionari

Wed 10/15

6:30 am-1:35 pm

1 stop15h 05m

$971

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 10/8

3:50 pm-10:35 pm

1 stop22h 45m

Trieste Ronchi dei Legionari

Wed 10/15

6:30 am-1:35 pm

1 stop15h 05m

$1,055

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Wed 2/25

11:15 am-10:25 am

2 stops15h 10m

Trieste Ronchi dei Legionari

Wed 3/4

6:35 am-4:41 pm

2 stops18h 06m

$1,114

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 12/2

3:40 pm-7:35 am

3 stops31h 55m

$488

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 12/2

4:20 pm-6:50 pm

2 stops18h 30m

$489

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 12/2

5:45 pm-2:00 pm

1 stop12h 15m

$512

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 9/23

5:59 pm-10:35 pm

1 stop20h 36m

$610

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 9/23

6:00 pm-10:35 pm

2 stops20h 35m

$615

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sat 9/27

5:58 pm-2:05 pm

2 stops36h 07m

$630

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Trieste from

How to get the cheapest flight ticket from Denver to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Friday when prices can be found for as low as $607. This is often the case because there is less demand to fly during this day of the week. Flights from Denver to Trieste on a Saturday will generally be more expensive and average around $1,100. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Can stopping save me money on Denver to Trieste flights?

You could potentially save up to 19% on your flight if you consider stops on a Denver to Trieste flight.

When to book flights from Denver to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Trieste according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Trieste (DEN to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Trieste

Direct flights

None
There are no direct flights from Denver to Trieste. There are no popular flight routes from Denver to Trieste.
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  • How far is Denver Intl to Trieste Ronchi dei Legionari by plane?

    The distance between Denver Intl and Trieste Ronchi dei Legionari is about 5423.3 mi. By plane, this route typically takes 15h 10m.

  • When did momondo last update prices for flights from Denver Intl Airport to Trieste Ronchi dei Legionari Airport?

    Prices for flights from Denver Intl Airport to Trieste Ronchi dei Legionari Airport are updated daily.

  • How old do you have to be to fly from Denver Intl Airport to Trieste Ronchi dei Legionari Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Trieste Ronchi dei Legionari Airport.

  • What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

    The travel and health documents required for your trip to Trieste Ronchi dei Legionari Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Trieste Ronchi dei Legionari Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Udine
Grado

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Trieste?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Trieste from Denver.

Can I find flights from Denver to Trieste with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Trieste from Denver with this policy.

How can momondo help me find flights from Denver to Trieste?

Once you have performed a search for Denver to Trieste flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Denver to Trieste right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Denver to Trieste flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
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