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Cheap flights from Washington, D.C. to Trieste from $879

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
4:43 pm - 2:30 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
15h 47m2 stops Atlanta Hartsfield-Jackson Rome Fiumicino
KLM Logo
3:15 pm - 9:09 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
35h 54m2 stops Rome Fiumicino Atlanta Hartsfield-Jackson
$879KLM
Wed, Jan 27 - Mon, Feb 8
ITA Airways Logo
4:30 pm - 2:30 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
16h 00m1 stop Rome Fiumicino
ITA Airways Logo
11:15 am - 2:30 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
33h 15m1 stop Rome Fiumicino
$888ITA Airways
Sun, Dec 13 - Sat, Dec 26
Multiple Airlines Logo
7:40 pm - 10:55 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
21h 15m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Rome Fiumicino
Multiple Airlines Logo
8:55 am - 4:30 amTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
25h 35m2 stops Barcelona-El Prat Bogotá El Dorado
$937Multiple Airlines
Wed, Jan 27 - Mon, Feb 8
Multiple Airlines Logo
1:30 pm - 5:50 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
22h 20m2 stops Istanbul Tirana Rinas
Multiple Airlines Logo
6:35 am - 8:35 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
44h 00m2 stops Rome Fiumicino Lisbon Humberto Delgado
$981Multiple Airlines
Sat, Dec 5 - Sat, Dec 12
Multiple Airlines Logo
1:30 pm - 5:50 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
22h 20m2 stops Istanbul Tirana Rinas
Multiple Airlines Logo
11:15 am - 3:15 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
58h 00m2 stops Rome Fiumicino Lisbon Humberto Delgado
$988Multiple Airlines
Sat, Dec 5 - Sat, Dec 12
Multiple Airlines Logo
1:30 pm - 5:50 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
22h 20m2 stops Istanbul Tirana Rinas
Multiple Airlines Logo
7:15 pm - 7:05 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
29h 50m3 stops Rome Fiumicino Madrid Barajas Casablanca Mohamed V
$1,041Multiple Airlines
Sat, Dec 5 - Sat, Dec 12
Multiple Airlines Logo
7:10 pm - 5:50 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
17h 40m2 stops Vienna Intl Tirana Rinas
Multiple Airlines Logo
6:25 pm - 2:00 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
24h 35m2 stops Tirana Rinas Vienna Intl
$1,058Multiple Airlines
Fri, Mar 19 - Sat, Mar 27
Multiple Airlines Logo
9:55 am - 6:30 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
26h 35m3 stops Montreal Pierre Elliott Trudeau Intl Madrid Barajas Rome Fiumicino
Multiple Airlines Logo
11:15 am - 8:23 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
39h 08m3 stops Rome Fiumicino Madrid Barajas Montreal Pierre Elliott Trudeau Intl
$1,065Multiple Airlines
Wed, Jan 27 - Mon, Feb 8
Multiple Airlines Logo
5:25 pm - 9:45 pmIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
22h 20m2 stops Lisbon Humberto Delgado Sevilla
Multiple Airlines Logo
7:15 pm - 7:05 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
29h 50m3 stops Rome Fiumicino Madrid Barajas Casablanca Mohamed V
$1,087Multiple Airlines
Sat, Dec 5 - Sat, Dec 12
Multiple Airlines Logo
7:40 pm - 10:25 amIAD  Washington, D.C. Dulles Intl-TRS Trieste Ronchi dei Legionari
32h 45m3 stops Reykjavik Keflavik Intl Paris Charles de Gaulle Rome Fiumicino
Multiple Airlines Logo
6:35 am - 6:30 pmTRS  Trieste Ronchi dei Legionari-IAD Washington, D.C. Dulles Intl
17h 55m3 stops Rome Fiumicino Paris Charles de Gaulle Reykjavik Keflavik Intl
$1,132Multiple Airlines
Sat, Dec 5 - Sat, Dec 12

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United Airlines flights from Washington, D.C. to Trieste

Our best United Airlines deals on Washington, D.C. to Trieste flight tickets
United Airlines
Dec 21
IAD12:40 pmWashington, D.C. Dulles Intl
15h 45m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Dec 28
TRS6:35 amTrieste Ronchi dei Legionari
14h 50m
1 stop
IAD3:25 pmWashington, D.C. Dulles Intl
$2,210
United Airlines
Dec 5
IAD5:46 pmWashington, D.C. Dulles Intl
34h 39m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Dec 9
TRS6:35 amTrieste Ronchi dei Legionari
14h 50m
1 stop
IAD3:25 pmWashington, D.C. Dulles Intl
$2,233

ITA Airways flights from Washington, D.C. to Trieste

Our best ITA Airways deals on Washington, D.C. to Trieste flight tickets
ITA Airways
Dec 13
IAD4:30 pmWashington, D.C. Dulles Intl
16h 00m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
Dec 26
TRS11:15 amTrieste Ronchi dei Legionari
33h 15m
1 stop
IAD2:30 pmWashington, D.C. Dulles Intl
$888
ITA Airways
Dec 22
IAD4:30 pmWashington, D.C. Dulles Intl
16h 00m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
Dec 29
TRS6:35 amTrieste Ronchi dei Legionari
13h 55m
1 stop
IAD2:30 pmWashington, D.C. Dulles Intl
$1,334
ITA Airways
Mar 7
IAD4:45 pmWashington, D.C. Dulles Intl
15h 45m
1 stop
TRS2:30 pmTrieste Ronchi dei Legionari
Mar 11
TRS6:35 amTrieste Ronchi dei Legionari
14h 05m
1 stop
IAD2:40 pmWashington, D.C. Dulles Intl
$1,358

momondo Fare Finder

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

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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

Wed 1/27

4:43 pm-2:30 pm

2 stops15h 47m

Trieste Ronchi dei Legionari

Mon 2/8

3:15 pm-9:09 pm

2 stops35h 54m

$879

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Sun 12/13

4:30 pm-2:30 pm

1 stop16h 00m

Trieste Ronchi dei Legionari

Sat 12/26

11:15 am-2:30 pm

1 stop33h 15m

$888

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Wed 1/27

7:40 pm-10:55 pm

3 stops21h 15m

Trieste Ronchi dei Legionari

Mon 2/8

8:55 am-4:30 am

2 stops25h 35m

$937

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Sat 12/5

1:30 pm-5:50 pm

2 stops22h 20m

Trieste Ronchi dei Legionari

Sat 12/12

6:35 am-8:35 pm

2 stops44h 00m

$981

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Sat 12/5

1:30 pm-5:50 pm

2 stops22h 20m

Trieste Ronchi dei Legionari

Sat 12/12

11:15 am-3:15 pm

2 stops58h 00m

$988

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Sat 12/5

1:30 pm-5:50 pm

2 stops22h 20m

Trieste Ronchi dei Legionari

Sat 12/12

7:15 pm-7:05 pm

3 stops29h 50m

$1,041
Quickest round-trip

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Fri 3/19

7:10 pm-5:50 pm

2 stops17h 40m

Trieste Ronchi dei Legionari

Sat 3/27

6:25 pm-2:00 pm

2 stops24h 35m

$1,058

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Wed 1/27

9:55 am-6:30 pm

3 stops26h 35m

Trieste Ronchi dei Legionari

Mon 2/8

11:15 am-8:23 pm

3 stops39h 08m

$1,065

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Sat 12/5

5:25 pm-9:45 pm

2 stops22h 20m

Trieste Ronchi dei Legionari

Sat 12/12

7:15 pm-7:05 pm

3 stops29h 50m

$1,087

Washington, D.C.Trieste

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

IADTRS

Washington, D.C. Dulles Intl

Sat 12/5

7:40 pm-10:25 am

3 stops32h 45m

Trieste Ronchi dei Legionari

Sat 12/12

6:35 am-6:30 pm

3 stops17h 55m

$1,132

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Washington, D.C. 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 airlines fly to Trieste?

United Airlines, Turkish Airlines and TAP AIR PORTUGAL are the top three most popular airlines that fly to Trieste from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 9 different airlines that fly to Trieste on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Trieste (WAS to TRS) flight deals and tips

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

Best Price Found

$879

Fastest flight time

14h 25m

Direct flights

None
The best flight deal from Washington, D.C. to Trieste found on momondo in the last 72 hours is $879
The fastest flight from Washington, D.C. to Trieste takes 14h 25m
There are no direct flights from Washington, D.C. to Trieste. There are no popular flight routes from Washington, D.C. to Trieste.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Trieste

  • How far is Washington, D.C. to Trieste Ronchi dei Legionari by plane?

    A flight from Washington, D.C. to Trieste Ronchi dei Legionari will travel around 4405.3 mi. Flights usually cover this in 14h 25m, depending on flying conditions and air traffic around both airports.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Trieste Ronchi dei Legionari Airport.

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

    The travel and health documents you'll need for your trip to Trieste Ronchi dei Legionari Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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?

Yes. momondo allows you to filter the results for Washington, D.C. to Trieste flights to just show those with 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?

If you are simply researching potential flights to Trieste, momondo offers a useful price alert feature which will track prices for flights to Trieste from Washington, D.C. and alert you when they change.

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