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Trieste

$738+ Cheap flights from Dulles Intl (IAD) to Trieste (TRS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — TRS
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
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Cheap flight deals from Dulles Intl to Trieste

Cheapest flights from Dulles Intl to Trieste
Explore the most affordable flight options available from Dulles Intl to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

This KAYAK deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:45 pm
IAD
-
TRS
1 stop19h 45m
ITA Airways
Wed 11/117:15 pm
TRS
-
IAD
1 stop25h 25m
ITA Airways
Deal found 4/28$919
This Cheapflightsfares deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:25 pm
IAD
-
TRS
2 stops19h 05m
TAP AIR PORTUGAL
Wed 11/116:35 am
TRS
-
IAD
2 stops20h 00m
TAP AIR PORTUGAL
Deal found 4/28$1,037
This Travelocity deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:30 pm
IAD
-
TRS
2 stops16h 35m
Multiple Airlines
Wed 11/112:45 pm
TRS
-
IAD
1 stop31h 05m
Multiple Airlines
Deal found 4/28$1,065
This oojo deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/58:30 pm
IAD
-
TRS
2 stops16h 00m
Multiple Airlines
Tue 7/213:15 pm
TRS
-
IAD
2 stops37h 00m
Multiple Airlines
Deal found 4/29$1,141
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:25 pm
IAD
-
TRS
2 stops15h 05m
TAP AIR PORTUGAL
Sat 11/1411:15 am
TRS
-
IAD
2 stops39h 20m
TAP AIR PORTUGAL
Deal found 4/28$1,150
This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:35 pm
IAD
-
TRS
2 stops42h 20m
TAP AIR PORTUGAL
Tue 5/263:15 pm
TRS
-
IAD
2 stops29h 55m
TAP AIR PORTUGAL
Deal found 4/27$1,158
This oojo deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:30 pm
IAD
-
TRS
1 stop16h 00m
ITA Airways
Tue 5/266:35 am
TRS
-
IAD
1 stop13h 55m
ITA Airways
Deal found 4/28$1,185
This Mytrip deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:15 pm
IAD
-
TRS
3 stops23h 40m
Multiple Airlines
Tue 6/163:15 pm
TRS
-
IAD
3 stops30h 30m
Multiple Airlines
Deal found 4/25$1,216
This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/55:55 pm
IAD
-
TRS
1 stop13h 50m
Lufthansa
Tue 7/216:20 am
TRS
-
IAD
1 stop13h 15m
Lufthansa
Deal found 4/29$1,238

Find flight deals from Dulles Intl to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 30, 2026.

Round-trip from

$919
(KAYAK)

One-way from

$738
(Icelandair)
From Washington, D.C. Dulles Intl to Trieste Ronchi dei Legionari
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One-way flight from Washington, D.C. Dulles Intl to Trieste Ronchi dei Legionari
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Tue 10/27

6:25 pm-6:30 pm

2 stops19h 05m

Trieste Ronchi dei Legionari

Wed 11/11

6:35 am-8:35 pm

2 stops20h 00m

$1,037

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 5/12

10:35 pm-10:55 pm

2 stops42h 20m

Trieste Ronchi dei Legionari

Tue 5/26

6:35 am-3:10 pm

2 stops38h 35m

$1,158
Quickest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 5/12

4:30 pm-2:30 pm

1 stop16h 00m

Trieste Ronchi dei Legionari

Tue 5/26

6:35 am-2:30 pm

1 stop13h 55m

$1,185

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 7/5

11:20 pm-6:30 pm

2 stops37h 10m

Trieste Ronchi dei Legionari

Tue 7/21

7:15 pm-10:15 pm

2 stops33h 00m

$1,324

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 6/14

8:30 pm-6:30 pm

2 stops16h 00m

Trieste Ronchi dei Legionari

Sat 7/18

6:35 am-7:20 pm

2 stops42h 45m

$1,374

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 8/28

5:05 pm-6:30 pm

2 stops19h 25m

Trieste Ronchi dei Legionari

Mon 9/7

3:15 pm-3:10 pm

2 stops29h 55m

$1,463

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 8/28

4:30 pm-6:30 pm

1 stop20h 00m

Trieste Ronchi dei Legionari

Mon 9/7

6:35 am-2:30 pm

1 stop13h 55m

$1,603

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 9/10

6:15 am-10:25 am

2 stops22h 10m

Trieste Ronchi dei Legionari

Fri 9/18

6:35 am-2:15 pm

1 stop13h 40m

$1,623
Cheapest one-way

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 7/19

4:30 pm-2:30 pm

1 stop16h 00m

$776

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 7/19

10:35 pm-10:55 pm

2 stops18h 20m

$781

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 16 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Trieste. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Trieste from Washington, D.C. Dulles Intl?

    Trieste Ronchi dei Legionari (TRS) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Trieste. You should not have trouble finding flights to Ronchi dei Legionari from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Trieste airport from Washington, D.C. Dulles Intl. It is only a 18.2 mi journey from Ronchi dei Legionari (TRS) to Trieste’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Trieste?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Trieste in 16h. Fly via TAP AIR PORTUGAL or ITA Airways to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and Trieste is about 4403 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Dulles Intl to Trieste that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Trieste?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Trieste.

  • Can I find deals for business class flights from Dulles Intl to Trieste?

    Yes. Cheapflights offers flight deals from Dulles Intl to Trieste by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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