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Cheap flights from District of Columbia to Trieste from $438

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Trieste departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from District of Columbia to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:25 am - 4:00 pm
IAD
-
TRS
25h 35m
3 stops
Multiple Airlines Logo
11:15 am - 3:10 pm
TRS
-
IAD
33h 55m
3 stops
$963Multiple Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
11:35 am - 10:15 pm
DCA
-
TRS
28h 40m
2 stops
Multiple Airlines Logo
6:15 am - 7:59 pm
TRS
-
DCA
19h 44m
2 stops
$1,010Multiple Airlines
Thu, May 28 - Thu, Jun 4
Multiple Airlines Logo
8:25 am - 4:00 pm
IAD
-
TRS
25h 35m
3 stops
Multiple Airlines Logo
7:15 pm - 8:35 pm
TRS
-
IAD
31h 20m
2 stops
$1,015Multiple Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
9:55 am - 11:05 pm
IAD
-
TRS
31h 10m
3 stops
Multiple Airlines Logo
10:30 am - 2:15 pm
TRS
-
IAD
33h 45m
2 stops
$1,025Multiple Airlines
Sun, Apr 26 - Thu, Apr 30
ITA Airways Logo
4:30 pm - 10:25 am
IAD
-
TRS
11h 55m
1 stop
ITA Airways Logo
6:35 am - 2:30 pm
TRS
-
IAD
13h 55m
1 stop
$1,030ITA Airways
Sat, Aug 8 - Thu, Aug 20
Multiple Airlines Logo
8:45 pm - 3:25 pm
IAD
-
TRS
12h 40m
1 stop
Multiple Airlines Logo
10:30 am - 8:35 pm
TRS
-
IAD
16h 05m
2 stops
$1,040Multiple Airlines
Sat, Sep 12 - Thu, Sep 24
ITA Airways Logo
4:30 pm - 2:30 pm
IAD
-
TRS
16h 00m
1 stop
ITA Airways Logo
7:15 pm - 2:30 pm
TRS
-
IAD
25h 15m
1 stop
$1,064ITA Airways
Sun, Apr 26 - Thu, Apr 30
TAP AIR PORTUGAL Logo
5:40 pm - 6:30 pm
IAD
-
TRS
42h 50m
2 stops
TAP AIR PORTUGAL Logo
6:35 am - 2:25 pm
TRS
-
IAD
37h 50m
2 stops
$1,074TAP AIR PORTUGAL
Sun, Sep 13 - Thu, Sep 24
TAP AIR PORTUGAL Logo
10:50 pm - 2:30 pm
IAD
-
TRS
33h 40m
2 stops
TAP AIR PORTUGAL Logo
3:15 pm - 2:25 pm
TRS
-
IAD
29h 10m
2 stops
$1,092TAP AIR PORTUGAL
Fri, Sep 11 - Thu, Sep 24
TAP AIR PORTUGAL Logo
5:05 pm - 10:55 pm
IAD
-
TRS
23h 50m
2 stops
TAP AIR PORTUGAL Logo
6:35 am - 8:35 pm
TRS
-
IAD
20h 00m
2 stops
$1,095TAP AIR PORTUGAL
Sat, Sep 12 - Fri, Sep 25

TAP AIR PORTUGAL flights from District of Columbia to Trieste

Our best TAP AIR PORTUGAL deals on District of Columbia to Trieste flight tickets
TAP AIR PORTUGAL
Sep 28
IAD5:40 pmWashington, D.C. Dulles Intl
18h 50m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Sep 30
TRS6:35 amTrieste Ronchi dei Legionari
38h 35m
2 stops
IAD3:10 pmWashington, D.C. Dulles Intl
$1,194
TAP AIR PORTUGAL
May 12
IAD10:35 pmWashington, D.C. Dulles Intl
37h 55m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
May 26
TRS6:35 amTrieste Ronchi dei Legionari
38h 35m
2 stops
IAD3:10 pmWashington, D.C. Dulles Intl
$1,238
TAP AIR PORTUGAL
Sep 28
IAD5:40 pmWashington, D.C. Dulles Intl
18h 50m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Sep 30
TRS6:35 amTrieste Ronchi dei Legionari
20h 00m
2 stops
IAD8:35 pmWashington, D.C. Dulles Intl
$1,275

Icelandair flights from District of Columbia to Trieste

Our best Icelandair deals on District of Columbia to Trieste flight tickets
Icelandair
Jul 2
IAD8:30 pmWashington, D.C. Dulles Intl
16h 00m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Jul 16
TRS11:15 amTrieste Ronchi dei Legionari
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,511
Icelandair
Jun 16
IAD8:30 pmWashington, D.C. Dulles Intl
16h 00m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Jun 23
TRS11:15 amTrieste Ronchi dei Legionari
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,540
Icelandair
Jul 2
IAD8:30 pmWashington, D.C. Dulles Intl
16h 00m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Jul 18
TRS11:15 amTrieste Ronchi dei Legionari
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,561

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 April 14, 2026.
Use the filters below to find and compare flights from District of Columbia to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 5/27

8:25 am-4:00 pm

3 stops25h 35m

Trieste Ronchi dei Legionari

Wed 6/3

11:15 am-3:10 pm

3 stops33h 55m

$963

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Thu 5/28

11:35 am-10:15 pm

2 stops28h 40m

Trieste Ronchi dei Legionari

Thu 6/4

6:15 am-7:59 pm

2 stops19h 44m

$1,010

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 5/27

8:25 am-4:00 pm

3 stops25h 35m

Trieste Ronchi dei Legionari

Wed 6/3

7:15 pm-8:35 pm

2 stops31h 20m

$1,015

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 4/26

9:55 am-11:05 pm

3 stops31h 10m

Trieste Ronchi dei Legionari

Thu 4/30

10:30 am-2:15 pm

2 stops33h 45m

$1,025
Quickest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 8/8

4:30 pm-10:25 am

1 stop11h 55m

Trieste Ronchi dei Legionari

Thu 8/20

6:35 am-2:30 pm

1 stop13h 55m

$1,030

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 9/12

8:45 pm-3:25 pm

1 stop12h 40m

Trieste Ronchi dei Legionari

Thu 9/24

10:30 am-8:35 pm

2 stops16h 05m

$1,040

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 4/26

4:30 pm-2:30 pm

1 stop16h 00m

Trieste Ronchi dei Legionari

Thu 4/30

7:15 pm-2:30 pm

1 stop25h 15m

$1,064

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 9/13

5:40 pm-6:30 pm

2 stops42h 50m

Trieste Ronchi dei Legionari

Thu 9/24

6:35 am-2:25 pm

2 stops37h 50m

$1,074

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 9/11

10:50 pm-2:30 pm

2 stops33h 40m

Trieste Ronchi dei Legionari

Thu 9/24

3:15 pm-2:25 pm

2 stops29h 10m

$1,092

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 9/12

5:05 pm-10:55 pm

2 stops23h 50m

Trieste Ronchi dei Legionari

Fri 9/25

6:35 am-8:35 pm

2 stops20h 00m

$1,095

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 District of Columbia 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 airline that flies from District of Columbia to Trieste Ronchi dei Legionari?

ITA Airways, Icelandair, and TAP AIR PORTUGAL are the most popular carriers operating from District of Columbia to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

United Airlines, Turkish Airlines and British Airways are the top three most popular airlines that fly to Trieste from District of Columbia according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 10 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

Cheap District of Columbia to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Trieste

Fastest flight time

10h 50m

Direct flights

None
The fastest flight from District of Columbia to Trieste takes 10h 50m
There are no direct flights from District of Columbia to Trieste. There are no popular flight routes from District of Columbia to Trieste.
Search flight deals

Frequently asked questions about flying from District of Columbia to Trieste

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

    Prices for flights from District of Columbia to Trieste Ronchi dei Legionari Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Trieste Ronchi dei Legionari Airport.

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

    The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable 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 District of Columbia to Trieste?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from District of Columbia to Trieste. momondo saves you time and could save you money on your trip.

Can I find flights from District of Columbia to Trieste with flexible booking policies on momondo?

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

How can momondo help me find flights from District of Columbia to Trieste?

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

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

Of course. momondo tracks the price of District of Columbia to Trieste flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Trieste trip

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Find better results for your trip to Italy

Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
United Airlines
Turkish Airlines
British Airways
ITA Airways
TAP AIR PORTUGAL
Lufthansa
Aer Lingus
Scandinavian Airlines
Delta
SWISS