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Cheap flights from Washington, D.C. Dulles Intl Airport to Trieste from $297

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Trieste departing on 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Trieste

Cheap round-trip flights

Logo
9:45 am - 10:55 pmIAD-TRS
31h 10m3 stops
Logo
7:15 pm - 9:05 pmTRS-IAD
31h 50m3 stops
$701
Find Deal
Tue, Sep 16 - Tue, Sep 23
Lufthansa Logo
10:10 pm - 10:35 pmIAD-TRS
18h 25m1 stop
Lufthansa Logo
6:30 am - 1:30 pmTRS-IAD
13h 00m1 stop
$721Lufthansa
Find Deal
Wed, Aug 27 - Tue, Sep 2
Lufthansa Logo
10:20 pm - 10:35 pmIAD-TRS
18h 15m2 stops
Lufthansa Logo
6:30 am - 1:30 pmTRS-IAD
13h 00m1 stop
$732Lufthansa
Find Deal
Tue, Sep 16 - Tue, Sep 23
ITA Airways Logo
4:30 pm - 8:55 pmIAD-TRS
22h 25m2 stops
ITA Airways Logo
6:35 am - 2:40 pmTRS-IAD
14h 05m1 stop
$801ITA Airways
Find Deal
Thu, Sep 18 - Thu, Sep 25
ITA Airways Logo
4:30 pm - 8:55 pmIAD-TRS
22h 25m2 stops
ITA Airways Logo
7:55 am - 2:40 pmTRS-IAD
36h 45m2 stops
$816ITA Airways
Find Deal
Thu, Sep 18 - Thu, Sep 25
Turkish Airlines Logo
1:30 pm - 6:30 pmIAD-TRS
23h 00m2 stops
Turkish Airlines Logo
6:35 am - 11:45 amTRS-IAD
35h 10m2 stops
$1,081Turkish Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 8
Turkish Airlines Logo
1:30 pm - 6:30 pmIAD-TRS
23h 00m2 stops
Turkish Airlines Logo
11:15 am - 11:45 amTRS-IAD
30h 30m2 stops
$1,185Turkish Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 1
Austrian Airlines Logo
5:25 pm - 10:55 pmIAD-TRS
23h 30m2 stops
Austrian Airlines Logo
7:15 pm - 2:35 pmTRS-IAD
49h 20m2 stops
$1,400Austrian Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 29
Austrian Airlines Logo
5:25 pm - 10:55 pmIAD-TRS
47h 30m2 stops
Austrian Airlines Logo
7:25 pm - 2:35 pmTRS-IAD
49h 10m2 stops
$1,475Austrian Airlines
Find Deal
Wed, Oct 1 - Mon, Oct 13
TAP AIR PORTUGAL Logo
10:20 pm - 10:55 pmIAD-TRS
18h 35m2 stops
TAP AIR PORTUGAL Logo
11:15 am - 8:50 pmTRS-IAD
15h 35m2 stops
$3,461TAP AIR PORTUGAL
Find Deal
Wed, Aug 20 - Sun, Aug 31

ITA Airways flights from Washington, D.C. Dulles Intl Airport to Trieste

Our best ITA Airways deals on Washington, D.C. Dulles Intl Airport to Trieste flight tickets
ITA Airways
Sep 18
IAD4:30 pmWashington, D.C. Dulles Intl
22h 25m
2 stops
TRS8:55 pmTrieste Ronchi dei Legionari
Sep 25
TRS6:35 amTrieste Ronchi dei Legionari
14h 05m
1 stop
IAD2:40 pmWashington, D.C. Dulles Intl
$801
Find similar
ITA Airways
Sep 18
IAD4:30 pmWashington, D.C. Dulles Intl
22h 25m
2 stops
TRS8:55 pmTrieste Ronchi dei Legionari
Sep 25
TRS7:55 amTrieste Ronchi dei Legionari
36h 45m
2 stops
IAD2:40 pmWashington, D.C. Dulles Intl
$816
Find similar
ITA Airways
Aug 22
IAD4:30 pmWashington, D.C. Dulles Intl
11h 55m
1 stop
TRS10:25 amTrieste Ronchi dei Legionari
Sep 7
TRS6:35 amTrieste Ronchi dei Legionari
14h 05m
1 stop
IAD2:40 pmWashington, D.C. Dulles Intl
$847
Find similar

Turkish Airlines flights from Washington, D.C. Dulles Intl Airport to Trieste

Our best Turkish Airlines deals on Washington, D.C. Dulles Intl Airport to Trieste flight tickets
Turkish Airlines
Sep 24
IAD1:30 pmWashington, D.C. Dulles Intl
23h 00m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Oct 8
TRS6:35 amTrieste Ronchi dei Legionari
35h 10m
2 stops
IAD11:45 amWashington, D.C. Dulles Intl
$1,081
Find similar
Turkish Airlines
Aug 13
IAD9:40 pmWashington, D.C. Dulles Intl
38h 50m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Sep 3
TRS6:35 amTrieste Ronchi dei Legionari
35h 10m
2 stops
IAD11:45 amWashington, D.C. Dulles Intl
$1,155
Find similar
Turkish Airlines
Sep 24
IAD1:30 pmWashington, D.C. Dulles Intl
23h 00m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Oct 1
TRS11:15 amTrieste Ronchi dei Legionari
30h 30m
2 stops
IAD11:45 amWashington, D.C. Dulles Intl
$1,185
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated August 4, 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

Fly to

Route

Depart

Return

Price

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 9/16

9:45 am-10:55 pm

3 stops31h 10m

Trieste Ronchi dei Legionari

Tue 9/23

7:15 pm-9:05 pm

3 stops31h 50m

$701

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 8/27

10:10 pm-10:35 pm

1 stop18h 25m

Trieste Ronchi dei Legionari

Tue 9/2

6:30 am-1:30 pm

1 stop13h 00m

$721

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 9/16

10:20 pm-10:35 pm

2 stops18h 15m

Trieste Ronchi dei Legionari

Tue 9/23

6:30 am-1:30 pm

1 stop13h 00m

$732

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 9/18

4:30 pm-8:55 pm

2 stops22h 25m

Trieste Ronchi dei Legionari

Thu 9/25

6:35 am-2:40 pm

1 stop14h 05m

$801

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 9/18

4:30 pm-8:55 pm

2 stops22h 25m

Trieste Ronchi dei Legionari

Thu 9/25

7:55 am-2:40 pm

2 stops36h 45m

$816

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 9/24

1:30 pm-6:30 pm

2 stops23h 00m

Trieste Ronchi dei Legionari

Wed 10/8

6:35 am-11:45 am

2 stops35h 10m

$1,081

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 9/24

1:30 pm-6:30 pm

2 stops23h 00m

Trieste Ronchi dei Legionari

Wed 10/1

11:15 am-11:45 am

2 stops30h 30m

$1,185

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Mon 9/15

5:25 pm-10:55 pm

2 stops23h 30m

Trieste Ronchi dei Legionari

Mon 9/29

7:15 pm-2:35 pm

2 stops49h 20m

$1,400

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 10/1

5:25 pm-10:55 pm

2 stops47h 30m

Trieste Ronchi dei Legionari

Mon 10/13

7:25 pm-2:35 pm

2 stops49h 10m

$1,475

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Wed 8/20

10:20 pm-10:55 pm

2 stops18h 35m

Trieste Ronchi dei Legionari

Sun 8/31

11:15 am-8:50 pm

2 stops15h 35m

$3,461

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Trieste from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Trieste?

The cheapest day to depart on your flight to Trieste is on a Tuesday when prices can be found for as low as $866. This is often the case because there is less demand to fly during this day of the week. Flights from Washington, D.C. Dulles Intl Airport to Trieste on a Friday will generally be more expensive and average around $988. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

When to book flights from Washington, D.C. Dulles Intl Airport to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Trieste according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Trieste (IAD to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Trieste

Best Price Found

$297

Fastest flight time

10h 45m

Direct flights

None

Airports in Trieste

1 airport
The best one-way flight to Trieste from Washington, D.C. Dulles Intl Airport in the past 72 hours is $297. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Trieste found on momondo in the last 72 hours is $701.
The fastest flight from Washington, D.C. Dulles Intl Airport to Trieste takes 10h 45m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Trieste. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - Trieste Ronchi dei Legionari Airport.
There is 1 airport near Trieste: Trieste Ronchi dei Legionari (TRS)
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  • How far is Washington, D.C. Dulles Intl to Trieste Ronchi dei Legionari by plane?

    A flight from Washington, D.C. Dulles Intl to Trieste Ronchi dei Legionari will travel around 4420.8 mi. By plane, this route typically takes 10h 45m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Trieste Ronchi dei Legionari Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Trieste Ronchi dei Legionari Airport are updated daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Trieste Ronchi dei Legionari Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Trieste Ronchi dei Legionari Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Trieste Ronchi dei Legionari Airport.

  • What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

    The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Trieste?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Trieste

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Trieste with momondo
Airline
Rating
Free Cancellation
Price
ITA AirwaysPriceFrom $665Free CancellationRating
6.7
1,011 reviews
Search ITA Airways flights

Traveling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Grado
Udine

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Why should I use momondo to find a flight deal from Washington, D.C. to Trieste?

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Can I find flights from Washington, D.C. to Trieste with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Trieste on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Trieste?

Once you have performed a search for Washington, D.C. to Trieste flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Trieste right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Trieste flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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