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Trieste

$661+ Cheap flights from District of Columbia 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — TRS
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from District of Columbia to Trieste

Cheapest flights from District of Columbia to Trieste
Explore the most affordable flight options available from District of Columbia to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This oojo deal was found by Cheapflights users on 2/3. 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 3/155:45 pm
IAD
-
TRS
2 stops22h 25m
ITA Airways
Fri 4/106:35 am
TRS
-
IAD
1 stop13h 55m
ITA Airways
Deal found 2/3$661
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:30 pm
IAD
-
TRS
2 stops16h 00m
Icelandair
Thu 9/1711:15 am
TRS
-
IAD
2 stops38h 05m
Icelandair
Deal found 2/2$811
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:30 pm
IAD
-
TRS
2 stops40h 00m
Icelandair
Fri 9/1811:15 am
TRS
-
IAD
2 stops17h 00m
Icelandair
Deal found 2/2$836
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:30 pm
IAD
-
TRS
2 stops16h 00m
Icelandair
Mon 9/2111:15 am
TRS
-
IAD
2 stops38h 05m
Icelandair
Deal found 2/2$838
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:30 pm
IAD
-
TRS
2 stops16h 00m
Multiple Airlines
Fri 9/1811:15 am
TRS
-
IAD
2 stops17h 00m
Multiple Airlines
Deal found 2/2$841
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:30 pm
IAD
-
TRS
2 stops16h 00m
Icelandair
Wed 9/1611:15 am
TRS
-
IAD
2 stops17h 00m
Icelandair
Deal found 2/2$877
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/2. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:40 pm
IAD
-
TRS
2 stops18h 50m
TAP AIR PORTUGAL
Thu 9/173:15 pm
TRS
-
IAD
2 stops29h 50m
TAP AIR PORTUGAL
Deal found 2/2$912
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/2. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:35 pm
IAD
-
TRS
2 stops37h 55m
TAP AIR PORTUGAL
Wed 9/163:15 pm
TRS
-
IAD
2 stops29h 50m
TAP AIR PORTUGAL
Deal found 2/2$916
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:20 pm
IAD
-
TRS
2 stops37h 10m
Icelandair
Thu 9/1711:15 am
TRS
-
IAD
2 stops38h 05m
Icelandair
Deal found 2/2$930
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/2. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:05 pm
IAD
-
TRS
2 stops19h 25m
TAP AIR PORTUGAL
Thu 9/1711:15 am
TRS
-
IAD
2 stops15h 20m
TAP AIR PORTUGAL
Deal found 2/2$932
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/2. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:35 pm
IAD
-
TRS
2 stops37h 55m
TAP AIR PORTUGAL
Sun 9/203:15 pm
TRS
-
IAD
2 stops29h 50m
TAP AIR PORTUGAL
Deal found 2/2$936
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/303:05 pm
DCA
-
TRS
2 stops37h 20m
United Airlines
Mon 4/66:35 am
TRS
-
DCA
2 stops38h 55m
United Airlines
Deal found 2/1$1,407

Find flight deals from District of Columbia to Trieste

Keep the following information in mind while searching for District of Columbia to Trieste flight deals. Data was last updated February 3, 2026.

Round-trip from

$661
(oojo)

Popular in

February

Cheapest in

April

Average price

$2,651
From District of Columbia to Trieste Ronchi dei Legionari
Search Deals
Highest demand for flights based on searches. 34% potential increase in price ($612 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 16% potential price decrease ($164 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 February 3, 2026.
Use the filters below to find and compare flights from District of Columbia to Trieste that are best for you.

Fly from

District of Columbia

Fly to

Trieste

Route

Depart

Return

Price

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 3/15

5:45 pm-9:10 pm

2 stops22h 25m

Trieste Ronchi dei Legionari

Fri 4/10

6:35 am-2:30 pm

1 stop13h 55m

$661

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 4/4

8:30 pm-6:30 pm

2 stops16h 00m

Trieste Ronchi dei Legionari

Wed 4/8

11:15 am-7:20 pm

2 stops38h 05m

$939

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sat 4/4

10:35 pm-10:55 pm

2 stops18h 20m

Trieste Ronchi dei Legionari

Wed 4/8

6:35 am-3:05 pm

2 stops38h 30m

$962

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 3/31

4:30 pm-10:25 am

1 stop11h 55m

Trieste Ronchi dei Legionari

Mon 4/6

7:15 pm-2:30 pm

1 stop25h 15m

$1,039

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 3/20

12:55 pm-10:25 am

2 stops16h 30m

Trieste Ronchi dei Legionari

Fri 3/27

1:05 pm-2:30 pm

2 stops54h 25m

$1,080

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Fri 3/20

6:05 pm-5:05 pm

2 stops18h 00m

Trieste Ronchi dei Legionari

Fri 3/27

8:30 pm-3:35 pm

1 stop24h 05m

$1,085

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 3/29

4:30 pm-2:30 pm

1 stop16h 00m

Trieste Ronchi dei Legionari

Mon 4/6

7:15 pm-2:30 pm

1 stop25h 15m

$1,089

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 3/15

9:55 am-4:30 pm

3 stops25h 35m

Trieste Ronchi dei Legionari

Fri 4/10

3:45 pm-8:05 pm

2 stops34h 20m

$1,111

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Mon 3/30

3:05 pm-10:25 am

2 stops37h 20m

Trieste Ronchi dei Legionari

Mon 4/6

6:35 am-3:30 pm

2 stops38h 55m

$1,407

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Sun 3/29

8:40 pm-10:25 am

2 stops55h 45m

Trieste Ronchi dei Legionari

Mon 4/6

6:35 am-3:30 pm

2 stops38h 55m

$1,486

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 14 results
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Best time to book a flight from District of Columbia to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from District of Columbia 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.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Trieste

What is the cheapest month to book a flight from District of Columbia to Trieste?

Currently, June is the cheapest month in which you can book a flight from District of Columbia to Trieste (average of $446). Flying from District of Columbia to Trieste in December is currently the most expensive (average of $792). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia?

    For a flight from District of Columbia to Trieste, you will be flying into Ronchi dei Legionari. Trieste Ronchi dei Legionari (TRS) is just 18.2 mi from the center of the city.

  • How long is the flight from District of Columbia to Trieste?

    ITA Airways, Icelandair, and TAP AIR PORTUGAL can get you from District of Columbia to Trieste in just under 16h. Your travel time can differ by up to 6h 25m. District of Columbia and Trieste are separated by a distance of 4403 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from District of Columbia to Trieste that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Trieste flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to Trieste?

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

  • Can I find deals for business class flights from District of Columbia to Trieste?

    Yes. Cheapflights offers flight deals from District of Columbia 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.

  • What is the cheapest month to book a flight from District of Columbia to Trieste?

    Currently, June is the cheapest month in which you can book a flight from District of Columbia to Trieste (average of $446). Flying from District of Columbia to Trieste in December is currently the most expensive (average of $792). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for District of Columbia to Trieste

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from District of Columbia to Trieste

Discover the top airline that operate flights from District of Columbia 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$664Average$914FlexibilityNo cancel feeOn-time81%

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