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Trieste

$287+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — TRS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$655
(Mytrip)

One-way from

$287
(Kiwi.com)
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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Find 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/13. 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.
Fri 11/147:40 pmIAD - TRS
3 stops21h 15mMultiple Airlines
Sun 11/236:35 amTRS - IAD
3 stops17h 55mMultiple Airlines
Deal found 9/13$655
This FlightHub deal was found by Cheapflights users on 9/13. 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.
Fri 11/1410:30 pmIAD - TRS
2 stops34h 00mTAP AIR PORTUGAL
Sun 11/233:15 pmTRS - IAD
2 stops53h 20mTAP AIR PORTUGAL
Deal found 9/13$785
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Thu 10/309:45 amIAD - TRS
3 stops32h 10mMultiple Airlines
Thu 11/67:15 pmTRS - IAD
3 stops31h 39mMultiple Airlines
Deal found 9/14$832
This oojo deal was found by Cheapflights users on 9/13. 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 10/255:00 pmIAD - TRS
2 stops16h 30mTAP AIR PORTUGAL
Sun 11/233:15 pmTRS - IAD
2 stops30h 00mTAP AIR PORTUGAL
Deal found 9/13$833
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/2510:20 pmIAD - TRS
3 stops35h 10mMultiple Airlines
Sun 11/239:05 pmTRS - IAD
2 stops24h 10mMultiple Airlines
Deal found 9/13$852
This Orbitz deal was found by Cheapflights users on 9/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:40 pmIAD - TRS
2 stops19h 15mMultiple Airlines
Sun 10/267:15 pmTRS - IAD
2 stops54h 00mMultiple Airlines
Deal found 9/14$870
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Mon 10/209:40 pmIAD - TRS
2 stops38h 50mTurkish Airlines
Sun 10/263:15 pmTRS - IAD
2 stops50h 30mTurkish Airlines
Deal found 9/14$888

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 September 15, 2025.
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

Dulles Intl

Fly to

Trieste

Route

Depart

Return

Price

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 11/14

7:40 pm-10:55 pm

3 stops21h 15m

Trieste Ronchi dei Legionari

Sun 11/23

6:35 am-6:30 pm

3 stops17h 55m

$655

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 10/30

9:45 am-10:55 pm

3 stops32h 10m

Trieste Ronchi dei Legionari

Thu 11/6

7:15 pm-8:54 pm

3 stops31h 39m

$832

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 10/25

5:00 pm-3:30 pm

2 stops16h 30m

Trieste Ronchi dei Legionari

Sun 11/23

3:15 pm-3:15 pm

2 stops30h 00m

$833

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 10/25

10:20 pm-2:30 pm

3 stops35h 10m

Trieste Ronchi dei Legionari

Sun 11/23

9:05 pm-3:15 pm

2 stops24h 10m

$852

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 10/20

9:40 pm-10:55 pm

2 stops19h 15m

Trieste Ronchi dei Legionari

Sun 10/26

7:15 pm-8:15 pm

2 stops54h 00m

$870

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 10/20

9:40 pm-6:30 pm

2 stops38h 50m

Trieste Ronchi dei Legionari

Sun 10/26

3:15 pm-12:45 pm

2 stops50h 30m

$888

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 10/25

10:20 pm-5:20 pm

2 stops38h 00m

$288

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 10/13

10:20 pm-10:55 pm

2 stops18h 35m

$542

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 10/13

3:25 pm-2:05 pm

1 stop16h 40m

$992

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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.

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trieste. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with ITA Airways from Washington, D.C. Dulles Intl Airport to Trieste to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
ITA Airways
6.7
Okay
1,036 reviews

Boarding

6.8

Entertainment

6.2

Crew

7.3

Comfort

6.7

Overall

6.7

Food

6.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

FCO - GOA

ITA was fine and worked hard to correct problems with the original booking. However the third party booking agent who issued the ticket mishandled the booking and was not helpfully responsive in resolving the problems.
ITA Airways
6.7
Okay
1,036 reviews
ITA Airways
6.7
Okay
1,036 reviews

Boarding

6.8

Entertainment

6.2

Crew

7.3

Comfort

6.7

Overall

6.7

Food

6.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

FCO - GOA

ITA was fine and worked hard to correct problems with the original booking. However the third party booking agent who issued the ticket mishandled the booking and was not helpfully responsive in resolving the problems.

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 1 airline has 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 30m. Fly via TAP AIR PORTUGAL to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and Trieste is about 4403 mi.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Trieste round-trip?

    According to our current data, ITA Airways ($664), offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Trieste.

  • 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.

See more FAQs

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Alternative routes for Dulles Intl to Trieste

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Top airline flying from Dulles Intl to Trieste

Discover the top airline that operate flights from Dulles Intl to Trieste. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$664Average$910FlexibilityNo cancel feeOn-time81%

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