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Cheap flights from Colorado to Trieste from $433

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Trieste departing on 7/28. 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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Find the cheapest flights from Colorado to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:25 am - 1:55 pm
DEN
-
TRS
18h 30m
2 stops
Multiple Airlines Logo
6:15 am - 3:40 pm
TRS
-
DEN
17h 25m
1 stop
$939Multiple Airlines
Mon, Jul 27 - Thu, Aug 20
Lufthansa Logo
5:40 pm - 10:25 pm
DEN
-
TRS
20h 45m
1 stop
Lufthansa Logo
6:15 am - 3:40 pm
TRS
-
DEN
17h 25m
1 stop
$942Lufthansa
Mon, Jul 27 - Thu, Aug 20
Multiple Airlines Logo
11:30 am - 1:45 pm
DEN
-
TRS
18h 15m
2 stops
Multiple Airlines Logo
6:15 am - 3:40 pm
TRS
-
DEN
17h 25m
1 stop
$944Multiple Airlines
Sun, Jul 26 - Thu, Aug 20
Lufthansa Logo
5:40 pm - 10:25 pm
DEN
-
TRS
20h 45m
1 stop
Lufthansa Logo
6:15 am - 12:30 am
TRS
-
DEN
26h 15m
2 stops
$971Lufthansa
Mon, Jul 27 - Thu, Aug 20
Multiple Airlines Logo
11:25 am - 1:55 pm
DEN
-
TRS
18h 30m
2 stops
Multiple Airlines Logo
6:15 am - 1:45 pm
TRS
-
DEN
15h 30m
2 stops
$974Multiple Airlines
Mon, Jul 27 - Thu, Aug 20
Multiple Airlines Logo
11:30 am - 1:45 pm
DEN
-
TRS
18h 15m
2 stops
Multiple Airlines Logo
6:15 am - 1:45 pm
TRS
-
DEN
15h 30m
2 stops
$979Multiple Airlines
Sun, Jul 26 - Thu, Aug 20
Multiple Airlines Logo
5:40 pm - 1:55 pm
DEN
-
TRS
12h 15m
1 stop
Multiple Airlines Logo
6:15 am - 1:30 pm
TRS
-
DEN
15h 15m
1 stop
$1,010Multiple Airlines
Mon, Jul 27 - Thu, Aug 20
Lufthansa Logo
5:40 pm - 10:15 pm
DEN
-
TRS
20h 35m
1 stop
Lufthansa Logo
6:10 am - 3:40 pm
TRS
-
DEN
17h 30m
1 stop
$1,027Lufthansa
Sun, Sep 27 - Fri, Oct 2
Lufthansa Logo
5:42 pm - 10:15 pm
DEN
-
TRS
20h 33m
2 stops
Lufthansa Logo
6:20 am - 3:40 pm
TRS
-
DEN
17h 20m
1 stop
$1,032Lufthansa
Tue, Sep 29 - Tue, Oct 6
Lufthansa Logo
5:40 pm - 10:15 pm
DEN
-
TRS
20h 35m
1 stop
Lufthansa Logo
2:45 pm - 11:18 pm
TRS
-
DEN
16h 33m
2 stops
$1,037Lufthansa
Sun, Sep 27 - Tue, Oct 6

Lufthansa flights from Colorado to Trieste

Our best Lufthansa deals on Colorado to Trieste flight tickets
Lufthansa
Jul 27
DEN5:40 pmDenver Intl
20h 45m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
Aug 20
TRS6:15 amTrieste Ronchi dei Legionari
17h 25m
1 stop
DEN3:40 pmDenver Intl
$942
Lufthansa
Jul 27
DEN5:40 pmDenver Intl
20h 45m
1 stop
TRS10:25 pmTrieste Ronchi dei Legionari
Aug 20
TRS6:15 amTrieste Ronchi dei Legionari
26h 15m
2 stops
DEN12:30 amDenver Intl
$971
Lufthansa
Sep 27
DEN5:40 pmDenver Intl
20h 35m
1 stop
TRS10:15 pmTrieste Ronchi dei Legionari
Oct 2
TRS6:10 amTrieste Ronchi dei Legionari
17h 30m
1 stop
DEN3:40 pmDenver Intl
$1,027

United Airlines flights from Colorado to Trieste

Our best United Airlines deals on Colorado to Trieste flight tickets
United Airlines
Sep 28
DEN5:50 pmDenver Intl
32h 35m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Oct 2
TRS6:35 amTrieste Ronchi dei Legionari
20h 11m
2 stops
DEN6:46 pmDenver Intl
$1,236
United Airlines
Sep 27
DEN9:55 amDenver Intl
16h 30m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Oct 7
TRS6:35 amTrieste Ronchi dei Legionari
19h 36m
2 stops
DEN6:11 pmDenver Intl
$1,247
United Airlines
Sep 28
DEN10:20 amDenver Intl
16h 05m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Oct 5
TRS6:35 amTrieste Ronchi dei Legionari
20h 11m
2 stops
DEN6:46 pmDenver Intl
$1,300

momondo Fare Finder

 
Customize your flight search to find flights from Colorado 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 May 11, 2026.
Use the filters below to find and compare flights from Colorado 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-3:40 pm

1 stop17h 25m

$942

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sun 7/26

11:30 am-1:45 pm

2 stops18h 15m

Trieste Ronchi dei Legionari

Thu 8/20

6:15 am-3:40 pm

1 stop17h 25m

$944

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

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-1:45 pm

2 stops15h 30m

$974

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sun 7/26

11:30 am-1:45 pm

2 stops18h 15m

Trieste Ronchi dei Legionari

Thu 8/20

6:15 am-1:45 pm

2 stops15h 30m

$979
Quickest round-trip

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Mon 7/27

5:40 pm-1:55 pm

1 stop12h 15m

Trieste Ronchi dei Legionari

Thu 8/20

6:15 am-1:30 pm

1 stop15h 15m

$1,010

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sun 9/27

5:40 pm-10:15 pm

1 stop20h 35m

Trieste Ronchi dei Legionari

Fri 10/2

6:10 am-3:40 pm

1 stop17h 30m

$1,027

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Tue 9/29

5:42 pm-10:15 pm

2 stops20h 33m

Trieste Ronchi dei Legionari

Tue 10/6

6:20 am-3:40 pm

1 stop17h 20m

$1,032

DenverTrieste

DEN - TRS

DENTRS

Denver Intl

Sun 9/27

5:40 pm-10:15 pm

1 stop20h 35m

Trieste Ronchi dei Legionari

Tue 10/6

2:45 pm-11:18 pm

2 stops16h 33m

$1,037

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Trieste from

How to get the cheapest flight ticket from Colorado 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 Colorado to Trieste flights?

You could potentially save up to 56% on your flight if you consider stops on a Colorado to Trieste flight.

Cheap Colorado to Trieste flight deals and tips

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

Fastest flight time

20h 45m

Direct flights

None
The fastest flight from Colorado to Trieste takes 20h 45m
There are no direct flights from Colorado to Trieste. There are no popular flight routes from Colorado to Trieste.
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Frequently asked questions about flying from Colorado to Trieste

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

    Prices for flights from Colorado to Trieste Ronchi dei Legionari Airport are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Trieste Ronchi dei Legionari Airport.

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

    The necessary travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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 Colorado to Trieste?

It is quick and easy to find Colorado to Trieste flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Trieste that suits you.

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

momondo does allow users to show only those flights to Trieste from Colorado which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Trieste from Colorado. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Colorado 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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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
United Airlines
Lufthansa
British Airways
Turkish Airlines
Air Canada