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 KLM 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.

In terms of precipitation, rainfall in Trieste ranges from 2.4 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit Trieste when rainfall is around 2.4 in.

If weather is an important factor for your trip to Trieste, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from IAD to TRS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Trieste as you normally would.

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.

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.

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.

$674+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Trieste

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Cheap flight deals from Dulles Intl to Trieste

Cheapest

Best

Last-minute

One-way

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 17, 2026.

Fri 10/305:29 pm -

2 stops16h 01m

Fri 11/66:35 am -

2 stops22h 51m

Deal found 9/15

$696

Wed 10/1412:30 pm -

2 stops20h 00m

Thu 10/226:35 am -

2 stops15h 53m

Deal found 9/15

$697

Sun 10/115:13 pm -

2 stops19h 17m

Wed 10/216:35 am -

2 stops22h 41m

Deal found 9/15

$727

Sat 10/313:03 pm -

2 stops18h 27m

Sat 11/76:35 am -

2 stops22h 41m

Deal found 9/16

$807

Wed 10/149:55 am -

3 stops31h 00m

Thu 10/2211:15 am -

3 stops35h 30m

Deal found 9/15

$825

Sat 10/319:55 am -

3 stops32h 00m

Sat 11/73:15 pm -

3 stops31h 45m

Deal found 9/16

$887

Sun 10/114:30 pm -

1 stop24h 25m

Wed 10/2111:15 am -

1 stop33h 15m

Deal found 9/15

$988

Fri 10/306:15 pm -

2 stops18h 35m

Fri 11/610:25 am -

1 stop14h 55m

Deal found 9/15

$1,088

Sun 10/115:15 pm -

3 stops19h 15m

Wed 10/216:10 am -

2 stops18h 50m

Deal found 9/15

$1,117

Tue 12/84:30 pm -

1 stop16h 00m

Tue 12/296:35 am -

1 stop13h 55m

Deal found 9/16

$1,120

Best flights from Dulles Intl to Trieste
Discover carefully curated flight deals from Dulles Intl to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Wed 10/1412:30 pm -

2 stops20h 00m

Thu 10/226:35 am -

2 stops15h 53m

Deal found 9/15

$697

Tue 12/84:30 pm -

1 stop16h 00m

Tue 12/296:35 am -

1 stop13h 55m

Deal found 9/16

$1,120

Fri 12/117:40 pm -

2 stops16h 50m

Sat 12/196:35 am -

2 stops17h 55m

Deal found 9/13

$1,162

Fri 11/1310:30 pm -

2 stops42h 25m

Tue 11/1711:15 am -

2 stops39h 15m

Deal found 9/16

$1,218

Sun 10/115:13 pm -

2 stops19h 17m

Wed 10/216:35 am -

2 stops22h 41m

Deal found 9/15

$727

Sat 10/313:03 pm -

2 stops18h 27m

Sat 11/76:35 am -

2 stops22h 41m

Deal found 9/16

$807

Tue 10/209:45 am -

2 stops23h 00m

Wed 10/217:35 pm -

2 stops24h 55m

Deal found 9/15

$1,327

Fri 11/1312:50 pm -

2 stops23h 40m

Tue 11/176:35 am -

1 stop13h 55m

Deal found 9/14

$1,350

Last-minute flights from Dulles Intl to Trieste
Discover last-minute flight deals from Dulles Intl to Trieste. Data last updated September 17, 2026 and is based on user searches.

Sun 10/115:13 pm -

2 stops19h 17m

Wed 10/216:35 am -

2 stops22h 41m

Deal found 9/15

$727

Sun 10/114:30 pm -

1 stop24h 25m

Wed 10/2111:15 am -

1 stop33h 15m

Deal found 9/15

$988

Sun 10/115:15 pm -

3 stops19h 15m

Wed 10/216:10 am -

2 stops18h 50m

Deal found 9/15

$1,117

Wed 10/1412:30 pm -

2 stops20h 00m

Thu 10/226:35 am -

2 stops15h 53m

Deal found 9/15

$697

Wed 10/149:55 am -

3 stops31h 00m

Thu 10/2211:15 am -

3 stops35h 30m

Deal found 9/15

$825

Fri 10/305:29 pm -

2 stops16h 01m

Fri 11/66:35 am -

2 stops22h 51m

Deal found 9/15

$696

Fri 10/306:15 pm -

2 stops18h 35m

Fri 11/610:25 am -

1 stop14h 55m

Deal found 9/15

$1,088

Sat 10/313:03 pm -

2 stops18h 27m

Sat 11/76:35 am -

2 stops22h 41m

Deal found 9/16

$807

Sat 10/319:55 am -

3 stops32h 00m

Sat 11/73:15 pm -

3 stops31h 45m

Deal found 9/16

$887

One-way flights from Dulles Intl to Trieste
Search for one-way flight options from Dulles Intl to Trieste. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.

Thu 11/194:30 pm -

1 stop20h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/13

$674

Wed 11/1810:30 pm -

2 stops18h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/13

$752

Thu 11/197:40 pm -

2 stops16h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/13

$920

Wed 11/1812:37 pm -

3 stops19h 53m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/13

$1,384

Find flight deals from Dulles Intl to Trieste

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$696 (Flysmarter)
One-way from	$674 (ITA Airways)

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Trieste Ronchi dei Legionari flight deals.

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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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Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Trieste that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Thu 11/19

4:30 pm-6:30 pm

1 stop20h 00m

Trieste Ronchi dei Legionari

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$674

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Wed 10/14

12:30 pm-2:30 pm

2 stops20h 00m

Trieste Ronchi dei Legionari

Thu 10/22

6:35 am-4:28 pm

2 stops15h 53m

$697

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Sun 10/11

5:13 pm-6:30 pm

2 stops19h 17m

Trieste Ronchi dei Legionari

Wed 10/21

6:35 am-11:16 pm

2 stops22h 41m

$727

Quickest round-trip

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Wed 11/18

10:30 pm-10:55 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$752

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Sat 10/31

3:03 pm-2:30 pm

2 stops18h 27m

Trieste Ronchi dei Legionari

Sat 11/7

6:35 am-11:16 pm

2 stops22h 41m

$807

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Tue 12/8

4:30 pm-2:30 pm

1 stop16h 00m

Trieste Ronchi dei Legionari

Tue 12/29

6:35 am-2:30 pm

1 stop13h 55m

$1,120

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Fri 12/11

7:40 pm-6:30 pm

2 stops16h 50m

Trieste Ronchi dei Legionari

Sat 12/19

6:35 am-6:30 pm

2 stops17h 55m

$1,162

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Fri 11/13

10:30 pm-10:55 pm

2 stops42h 25m

Trieste Ronchi dei Legionari

Tue 11/17

11:15 am-8:30 pm

2 stops39h 15m

$1,218

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Tue 10/20

9:45 am-2:45 pm

2 stops23h 00m

Trieste Ronchi dei Legionari

Wed 10/21

7:35 pm-2:30 pm

2 stops24h 55m

$1,327

Washington, D.C.Trieste

IAD Washington, D.C. Dulles Intl - TRS Trieste Ronchi dei Legionari

IADTRS

Washington, D.C. Dulles Intl

Fri 11/13

12:50 pm-6:30 pm

2 stops23h 40m

Trieste Ronchi dei Legionari

Tue 11/17

6:35 am-2:30 pm

1 stop13h 55m

$1,350

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 11 resultsSorted by cheapest first

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.

IAD-TRS

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

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 KLM 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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$674+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Dulles Intl to TriesteExplore 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 17, 2026.

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 17, 2026.

Best flights from Dulles Intl to TriesteDiscover carefully curated flight deals from Dulles Intl to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Discover carefully curated flight deals from Dulles Intl to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Last-minute flights from Dulles Intl to TriesteDiscover last-minute flight deals from Dulles Intl to Trieste. Data last updated September 17, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Trieste. Data last updated September 17, 2026 and is based on user searches.

One-way flights from Dulles Intl to TriesteSearch for one-way flight options from Dulles Intl to Trieste. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.

Search for one-way flight options from Dulles Intl to Trieste. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.

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Best time to book a flight from Dulles Intl to Trieste

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Related info for your journey

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

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

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

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

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

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Dulles Intl and Trieste flights

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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 17, 2026.

Best flights from Dulles Intl to Trieste
Discover carefully curated flight deals from Dulles Intl to Trieste that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Last-minute flights from Dulles Intl to Trieste
Discover last-minute flight deals from Dulles Intl to Trieste. Data last updated September 17, 2026 and is based on user searches.

One-way flights from Dulles Intl to Trieste
Search for one-way flight options from Dulles Intl to Trieste. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.