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Trieste

$722+ Cheap flights from Dulles Intl (IAD) to Trieste (TRS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — TRS
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
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 August 2, 2026.

This oojo deal was found by Cheapflights users on 8/1. 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 11/244:45 pm
IAD
-
TRS
1 stop19h 45m
ITA Airways
Tue 12/16:35 am
TRS
-
IAD
1 stop14h 05m
ITA Airways
Deal found 8/1$722
This oojo deal was found by Cheapflights users on 7/31. 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 8/304:30 pm
IAD
-
TRS
1 stop20h 00m
ITA Airways
Sun 9/66:35 am
TRS
-
IAD
1 stop13h 55m
ITA Airways
Deal found 7/31$873
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:55 am
IAD
-
TRS
3 stops22h 25m
Multiple Airlines
Sat 10/38:30 am
TRS
-
IAD
2 stops35h 45m
Multiple Airlines
Deal found 7/28$900
This oojo deal was found by Cheapflights users on 8/1. 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.
Sat 9/124:30 pm
IAD
-
TRS
1 stop20h 00m
ITA Airways
Sat 9/196:35 am
TRS
-
IAD
1 stop13h 55m
ITA Airways
Deal found 8/1$915
This oojo deal was found by Cheapflights users on 8/2. 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.
Sat 8/294:30 pm
IAD
-
TRS
1 stop24h 25m
ITA Airways
Mon 9/76:35 am
TRS
-
IAD
1 stop13h 55m
ITA Airways
Deal found 8/2$961
This Travelocity deal was found by Cheapflights users on 8/2. 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.
Sat 8/2910:15 pm
IAD
-
TRS
2 stops33h 30m
Lufthansa
Mon 9/72:50 pm
TRS
-
IAD
1 stop28h 45m
Lufthansa
Deal found 8/2$1,001
This Mytrip deal was found by Cheapflights users on 8/1. 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.
Sat 9/129:45 am
IAD
-
TRS
3 stops31h 10m
Multiple Airlines
Sat 9/196:55 am
TRS
-
IAD
2 stops21h 20m
Multiple Airlines
Deal found 8/1$1,043
This oojo deal was found by Cheapflights users on 7/31. 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 8/3010:15 pm
IAD
-
TRS
2 stops33h 40m
Lufthansa
Sun 9/66:10 am
TRS
-
IAD
1 stop13h 25m
Lufthansa
Deal found 7/31$1,045
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Sun 8/305:35 pm
IAD
-
TRS
2 stops21h 40m
Multiple Airlines
Sun 9/66:15 pm
TRS
-
IAD
2 stops25h 45m
Multiple Airlines
Deal found 7/31$1,057

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 August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$722
(oojo)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Trieste Ronchi dei Legionari flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Trieste Ronchi dei Legionari flights.
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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 August 2, 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

Sun 8/30

4:30 pm-6:30 pm

1 stop20h 00m

Trieste Ronchi dei Legionari

Sun 9/6

6:35 am-2:30 pm

1 stop13h 55m

$873

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 9/23

9:55 am-2:20 pm

3 stops22h 25m

Trieste Ronchi dei Legionari

Sat 10/3

8:30 am-2:15 pm

2 stops35h 45m

$900

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 8/30

10:15 pm-1:55 pm

2 stops33h 40m

Trieste Ronchi dei Legionari

Sun 9/6

6:10 am-1:35 pm

1 stop13h 25m

$1,045

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 8/29

10:15 pm-10:15 pm

2 stops42h 00m

Trieste Ronchi dei Legionari

Mon 9/7

2:50 pm-11:11 am

2 stops50h 21m

$1,059

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 11/24

9:55 am-6:30 pm

2 stops26h 35m

Trieste Ronchi dei Legionari

Tue 12/1

6:35 am-8:35 pm

2 stops44h 00m

$1,090

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 8/29

5:35 pm-9:00 pm

2 stops21h 25m

Trieste Ronchi dei Legionari

Mon 9/7

3:15 pm-3:10 pm

3 stops29h 55m

$1,230

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 10/7

10:35 pm-2:30 pm

2 stops33h 55m

Trieste Ronchi dei Legionari

Sun 10/11

11:15 am-3:10 pm

2 stops57h 55m

$1,249

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 9/12

4:30 pm-2:30 pm

1 stop16h 00m

Trieste Ronchi dei Legionari

Fri 9/18

6:35 am-9:08 pm

2 stops20h 33m

$1,489
Quickest round-trip

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 9/8

1:13 pm-10:25 am

2 stops15h 12m

Trieste Ronchi dei Legionari

Sat 9/19

6:35 am-2:15 pm

1 stop13h 40m

$1,626

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 9/13

4:30 pm-10:25 am

1 stop11h 55m

Trieste Ronchi dei Legionari

Fri 9/18

6:35 am-9:08 pm

2 stops20h 33m

$1,685

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 16 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Trieste flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Trieste flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Trieste flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Trieste flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Trieste flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 20h. Fly via ITA Airways or Lufthansa 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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