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Cheap flights from Denver to Trieste from $755

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Trieste departing on 4/14. 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

Enter your travel dates to find the best prices.
Lufthansa Logo
4:15 pm - 6:30 pm
DEN
-
TRS
42h 15m2 stops
Lufthansa Logo
3:15 pm - 2:20 pm
TRS
-
DEN
55h 05m2 stops
$755Lufthansa
Tue, Apr 14 - Sun, Apr 19
Lufthansa Logo
5:30 pm - 6:30 pm
DEN
-
TRS
17h 00m1 stop
Lufthansa Logo
6:00 am - 3:40 pm
TRS
-
DEN
17h 40m1 stop
$763Lufthansa
Tue, Apr 14 - Sun, Apr 19
Lufthansa Logo
4:05 pm - 6:30 pm
DEN
-
TRS
18h 25m2 stops
Lufthansa Logo
6:00 am - 3:40 pm
TRS
-
DEN
17h 40m1 stop
$766Lufthansa
Tue, Apr 14 - Sun, Apr 19
Lufthansa Logo
3:55 pm - 1:45 pm
DEN
-
TRS
37h 50m2 stops
Lufthansa Logo
2:40 pm - 11:18 pm
TRS
-
DEN
16h 38m2 stops
$815Lufthansa
Sat, May 16 - Wed, May 27
Multiple Airlines Logo
3:55 pm - 1:45 pm
DEN
-
TRS
37h 50m2 stops
Multiple Airlines Logo
6:10 am - 3:40 pm
TRS
-
DEN
17h 30m1 stop
$816Multiple Airlines
Sat, May 16 - Wed, May 27
Lufthansa Logo
3:45 pm - 10:15 pm
DEN
-
TRS
22h 30m1 stop
Lufthansa Logo
6:10 am - 3:40 pm
TRS
-
DEN
17h 30m1 stop
$843Lufthansa
Sat, May 16 - Wed, May 27
Lufthansa Logo
5:30 pm - 6:30 pm
DEN
-
TRS
17h 00m1 stop
Lufthansa Logo
6:00 am - 3:40 pm
TRS
-
DEN
17h 40m1 stop
$857Lufthansa
Thu, Apr 9 - Thu, Apr 23
Multiple Airlines Logo
3:55 pm - 1:45 pm
DEN
-
TRS
37h 50m2 stops
Multiple Airlines Logo
6:10 am - 11:10 pm
TRS
-
DEN
25h 00m2 stops
$859Multiple Airlines
Sat, May 16 - Wed, May 27
Lufthansa Logo
4:05 pm - 6:30 pm
DEN
-
TRS
18h 25m2 stops
Lufthansa Logo
6:00 am - 1:35 pm
TRS
-
DEN
15h 35m1 stop
$861Lufthansa
Thu, Apr 9 - Thu, Apr 23
Lufthansa Logo
4:05 pm - 6:30 pm
DEN
-
TRS
18h 25m2 stops
Lufthansa Logo
6:35 am - 3:40 pm
TRS
-
DEN
17h 05m2 stops
$870Lufthansa
Thu, Apr 9 - Thu, Apr 23

Lufthansa flights from Denver to Trieste

Our best Lufthansa deals on Denver to Trieste flight tickets
Lufthansa
Apr 14
DEN4:15 pmDenver Intl
42h 15m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 19
TRS3:15 pmTrieste Ronchi dei Legionari
55h 05m
2 stops
DEN2:20 pmDenver Intl
$755
Lufthansa
Apr 14
DEN5:30 pmDenver Intl
17h 00m
1 stop
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 19
TRS6:00 amTrieste Ronchi dei Legionari
17h 40m
1 stop
DEN3:40 pmDenver Intl
$763
Lufthansa
Apr 14
DEN4:05 pmDenver Intl
18h 25m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Apr 19
TRS6:00 amTrieste Ronchi dei Legionari
17h 40m
1 stop
DEN3:40 pmDenver Intl
$766

United Airlines flights from Denver to Trieste

Our best United Airlines deals on Denver to Trieste flight tickets
United Airlines
Mar 4
DEN7:50 amDenver Intl
18h 35m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Mar 8
TRS6:35 amTrieste Ronchi dei Legionari
22h 04m
2 stops
DEN8:39 pmDenver Intl
$1,148
United Airlines
Mar 25
DEN11:15 amDenver Intl
16h 10m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Mar 29
TRS6:35 amTrieste Ronchi dei Legionari
19h 20m
1 stop
DEN5:55 pmDenver Intl
$1,690
United Airlines
Jun 26
DEN6:10 pmDenver Intl
56h 15m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Jul 5
TRS6:35 amTrieste Ronchi dei Legionari
20h 25m
2 stops
DEN7:00 pmDenver Intl
$2,042

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 January 8, 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

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 4/14

4:15 pm-6:30 pm

2 stops42h 15m

Trieste Ronchi dei Legionari

Sun 4/19

3:15 pm-2:20 pm

2 stops55h 05m

$755

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 4/14

5:30 pm-6:30 pm

1 stop17h 00m

Trieste Ronchi dei Legionari

Sun 4/19

6:00 am-3:40 pm

1 stop17h 40m

$763

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 4/14

4:05 pm-6:30 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Sun 4/19

6:00 am-3:40 pm

1 stop17h 40m

$766

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sat 5/16

3:55 pm-1:45 pm

2 stops37h 50m

Trieste Ronchi dei Legionari

Wed 5/27

2:40 pm-11:18 pm

2 stops16h 38m

$815

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sat 5/16

3:55 pm-1:45 pm

2 stops37h 50m

Trieste Ronchi dei Legionari

Wed 5/27

6:10 am-3:40 pm

1 stop17h 30m

$816

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sat 5/16

3:45 pm-10:15 pm

1 stop22h 30m

Trieste Ronchi dei Legionari

Wed 5/27

6:10 am-3:40 pm

1 stop17h 30m

$843

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Thu 4/9

5:30 pm-6:30 pm

1 stop17h 00m

Trieste Ronchi dei Legionari

Thu 4/23

6:00 am-3:40 pm

1 stop17h 40m

$857

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sat 5/16

3:55 pm-1:45 pm

2 stops37h 50m

Trieste Ronchi dei Legionari

Wed 5/27

6:10 am-11:10 pm

2 stops25h 00m

$859

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Thu 4/9

4:05 pm-6:30 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Thu 4/23

6:00 am-1:35 pm

1 stop15h 35m

$861

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Thu 4/9

4:05 pm-6:30 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Thu 4/23

6:35 am-3:40 pm

2 stops17h 05m

$870

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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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

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

Fastest flight time

16h 35m

Direct flights

None
The fastest flight from Denver to Trieste takes 16h 35m
There are no direct flights from Denver to Trieste. There are no popular flight routes from Denver to Trieste.
Search flight deals

  • 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 16h 35m.

  • 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.

An easier way to manage your Trieste trip

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Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
United Airlines
Lufthansa
British Airways
Turkish Airlines
SWISS
American Airlines
Delta
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