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Trieste

$281+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — TRS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$627
(lol.travel)

One-way from

$281
(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 July 30, 2025.

This lol.travel deal was found by Cheapflights users on 7/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/114:30 pmIAD - TRS
1 stop11h 55mITA Airways
Mon 8/187:15 pmTRS - IAD
1 stop25h 25mITA Airways
Deal found 7/29$627
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:10 pmIAD - TRS
1 stop13h 55mLufthansa
Tue 9/236:30 amTRS - IAD
1 stop15h 20mLufthansa
Deal found 7/30$712
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/152:25 pmIAD - TRS
2 stops17h 40mMultiple Airlines
Mon 10/272:45 pmTRS - IAD
1 stop31h 05mMultiple Airlines
Deal found 7/29$809
This Turkish Airlines deal was found by Cheapflights users on 7/30. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/151:30 pmIAD - TRS
2 stops23h 00mTurkish Airlines
Tue 9/236:35 amTRS - IAD
2 stops35h 10mTurkish Airlines
Deal found 7/30$941
This Austrian Airlines deal was found by Cheapflights users on 7/30. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:25 pmIAD - TRS
2 stops23h 30mAustrian Airlines
Sat 9/203:15 pmTRS - IAD
2 stops29h 20mAustrian Airlines
Deal found 7/30$1,596
This Arangrant deal was found by Cheapflights users on 7/29. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/248:30 pmIAD - TRS
2 stops16h 00mIcelandair
Fri 10/311:15 amTRS - IAD
2 stops16h 55mIcelandair
Deal found 7/29$4,547

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 July 30, 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

Mon 8/11

4:30 pm-10:25 am

1 stop11h 55m

Trieste Ronchi dei Legionari

Mon 8/18

7:15 pm-2:40 pm

1 stop25h 25m

$627

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 9/15

6:10 pm-2:05 pm

1 stop13h 55m

Trieste Ronchi dei Legionari

Tue 9/23

6:30 am-3:50 pm

1 stop15h 20m

$712

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 10/15

2:25 pm-2:05 pm

2 stops17h 40m

Trieste Ronchi dei Legionari

Mon 10/27

2:45 pm-4:50 pm

1 stop31h 05m

$809

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 9/15

1:30 pm-6:30 pm

2 stops23h 00m

Trieste Ronchi dei Legionari

Tue 9/23

6:35 am-11:45 am

2 stops35h 10m

$941

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 9/13

5:25 pm-10:55 pm

2 stops23h 30m

Trieste Ronchi dei Legionari

Sat 9/20

3:15 pm-2:35 pm

2 stops29h 20m

$1,596

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 9/24

8:30 pm-6:30 pm

2 stops16h 00m

Trieste Ronchi dei Legionari

Fri 10/3

11:15 am-10:10 pm

2 stops16h 55m

$4,547

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 10/4

10:35 pm-10:40 am

3 stops54h 05m

$281

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 10/13

6:10 pm-2:05 pm

1 stop13h 55m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 30, 2025.
Peruse reviews from past customers who have flown with Turkish Airlines, TAP AIR PORTUGAL, and Lufthansa 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.
Turkish Airlines
7.3
Good
3,928 reviews

Boarding

7.3

Crew

7.7

Comfort

7.3

Overall

7.3

Food

7.4

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Turkish Airlines
7.3
Good
3,928 reviews
Turkish Airlines
7.3
Good
3,928 reviews

Boarding

7.3

Crew

7.7

Comfort

7.3

Overall

7.3

Food

7.4

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
TAP AIR PORTUGAL
7.1
Good
1,930 reviews
Turkish Airlines
7.3
Good
3,928 reviews

Boarding

7.3

Crew

7.7

Comfort

7.3

Overall

7.3

Food

7.4

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Lufthansa
6.8
Okay
7,269 reviews
Turkish Airlines
7.3
Good
3,928 reviews

Boarding

7.3

Crew

7.7

Comfort

7.3

Overall

7.3

Food

7.4

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
ITA Airways
6.7
Okay
1,009 reviews
Turkish Airlines
7.3
Good
3,928 reviews

Boarding

7.3

Crew

7.7

Comfort

7.3

Overall

7.3

Food

7.4

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.

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.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Trieste round-trip?

    According to our current data, ITA Airways ($627), Lufthansa ($712), and Turkish Airlines ($941) 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.

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$665Average$910FlexibilityNo cancel feeOn-time81%

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