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Cheap flights from District of Columbia to Trieste from $571

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Trieste departing on 12/16. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:45 am - 10:50 pmIAD-TRS
31h 05m3 stops
Multiple Airlines Logo
6:10 pm - 3:50 pmTRS-IAD
27h 40m2 stops
$691Multiple Airlines
Find Deal
Sun, Feb 22 - Sat, Feb 28
Multiple Airlines Logo
10:30 pm - 10:55 pmIAD-TRS
18h 25m2 stops
Multiple Airlines Logo
3:15 pm - 3:15 pmTRS-IAD
54h 00m2 stops
$749Multiple Airlines
Find Deal
Sun, Feb 22 - Sat, Feb 28
Multiple Airlines Logo
7:40 pm - 10:55 pmIAD-TRS
21h 15m3 stops
Multiple Airlines Logo
7:15 pm - 6:30 pmTRS-IAD
29h 15m3 stops
$757Multiple Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
9:45 am - 10:50 pmIAD-TRS
31h 05m3 stops
Multiple Airlines Logo
7:15 pm - 3:50 pmTRS-IAD
26h 35m3 stops
$793Multiple Airlines
Find Deal
Sun, Feb 22 - Sat, Feb 28
Icelandair Logo
7:40 pm - 6:30 pmIAD-TRS
16h 50m2 stops
Icelandair Logo
6:35 am - 6:30 pmTRS-IAD
17h 55m2 stops
$806Icelandair
Find Deal
Thu, Jan 8 - Thu, Jan 15
Lufthansa Logo
5:40 pm - 6:30 pmIAD-TRS
18h 50m2 stops
Lufthansa Logo
6:15 am - 8:15 pmTRS-IAD
20h 00m1 stop
$811Lufthansa
Find Deal
Thu, Jan 8 - Thu, Jan 15
Lufthansa Logo
10:00 pm - 10:30 pmIAD-TRS
18h 30m1 stop
Lufthansa Logo
6:15 am - 2:35 pmTRS-IAD
14h 20m1 stop
$815Lufthansa
Find Deal
Thu, Jan 8 - Thu, Jan 15
Icelandair Logo
8:40 pm - 6:30 pmIAD-TRS
16h 50m2 stops
Icelandair Logo
11:15 am - 7:20 pmTRS-IAD
38h 05m2 stops
$831Icelandair
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Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
9:10 am - 10:25 amDCA-TRS
19h 15m2 stops
United Airlines Logo
6:35 am - 10:21 amTRS-DCA
33h 46m2 stops
$1,322United Airlines
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Mon, Jan 5 - Mon, Jan 12
United Airlines Logo
10:30 am - 10:25 amDCA-TRS
17h 55m2 stops
United Airlines Logo
6:35 am - 10:19 amTRS-DCA
33h 44m2 stops
$1,810United Airlines
Find Deal
Thu, Apr 2 - Mon, Apr 6

Lufthansa flights from District of Columbia to Trieste

Our best Lufthansa deals on District of Columbia to Trieste flight tickets
Lufthansa
Jan 8
IAD5:40 pmWashington, D.C. Dulles Intl
18h 50m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Jan 15
TRS6:15 amTrieste Ronchi dei Legionari
20h 00m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
$811
Find similar
Lufthansa
Jan 8
IAD10:00 pmWashington, D.C. Dulles Intl
18h 30m
1 stop
TRS10:30 pmTrieste Ronchi dei Legionari
Jan 15
TRS6:15 amTrieste Ronchi dei Legionari
14h 20m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
$815
Find similar
Lufthansa
Jan 5
IAD10:55 pmWashington, D.C. Dulles Intl
37h 35m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Jan 12
TRS11:15 amTrieste Ronchi dei Legionari
34h 35m
2 stops
IAD3:50 pmWashington, D.C. Dulles Intl
$834
Find similar

United Airlines flights from District of Columbia to Trieste

Our best United Airlines deals on District of Columbia to Trieste flight tickets
United Airlines
Mar 25
IAD9:55 amWashington, D.C. Dulles Intl
19h 30m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Apr 1
TRS6:35 amTrieste Ronchi dei Legionari
13h 50m
1 stop
IAD2:25 pmWashington, D.C. Dulles Intl
$1,191
Find similar
United Airlines
Jan 5
DCA9:10 amWashington, D.C. Reagan-National
19h 15m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Jan 12
TRS6:35 amTrieste Ronchi dei Legionari
33h 46m
2 stops
DCA10:21 amWashington, D.C. Reagan-National
$1,322
Find similar
United Airlines
Nov 24
IAD5:33 pmWashington, D.C. Dulles Intl
34h 52m
2 stops
TRS10:25 amTrieste Ronchi dei Legionari
Dec 5
TRS6:35 amTrieste Ronchi dei Legionari
14h 50m
1 stop
IAD3:25 pmWashington, D.C. Dulles Intl
$1,550
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from District of Columbia 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

Sun 2/22

9:45 am-10:50 pm

3 stops31h 05m

Trieste Ronchi dei Legionari

Sat 2/28

6:10 pm-3:50 pm

2 stops27h 40m

$691

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 2/22

10:30 pm-10:55 pm

2 stops18h 25m

Trieste Ronchi dei Legionari

Sat 2/28

3:15 pm-3:15 pm

2 stops54h 00m

$749

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 1/8

7:40 pm-10:55 pm

3 stops21h 15m

Trieste Ronchi dei Legionari

Thu 1/15

7:15 pm-6:30 pm

3 stops29h 15m

$757

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Sun 2/22

9:45 am-10:50 pm

3 stops31h 05m

Trieste Ronchi dei Legionari

Sat 2/28

7:15 pm-3:50 pm

3 stops26h 35m

$793

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 1/8

7:40 pm-6:30 pm

2 stops16h 50m

Trieste Ronchi dei Legionari

Thu 1/15

6:35 am-6:30 pm

2 stops17h 55m

$806

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 1/8

5:40 pm-6:30 pm

2 stops18h 50m

Trieste Ronchi dei Legionari

Thu 1/15

6:15 am-8:15 pm

1 stop20h 00m

$811

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Thu 1/8

10:00 pm-10:30 pm

1 stop18h 30m

Trieste Ronchi dei Legionari

Thu 1/15

6:15 am-2:35 pm

1 stop14h 20m

$815

Washington, D.C.Trieste

IAD - TRS

IADTRS

Washington, D.C. Dulles Intl

Tue 3/24

8:40 pm-6:30 pm

2 stops16h 50m

Trieste Ronchi dei Legionari

Tue 3/31

11:15 am-7:20 pm

2 stops38h 05m

$831

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Mon 1/5

9:10 am-10:25 am

2 stops19h 15m

Trieste Ronchi dei Legionari

Mon 1/12

6:35 am-10:21 am

2 stops33h 46m

$1,322

Washington, D.C.Trieste

DCA - TRS

DCATRS

Washington, D.C. Reagan-National

Thu 4/2

10:30 am-10:25 am

2 stops17h 55m

Trieste Ronchi dei Legionari

Mon 4/6

6:35 am-10:19 am

2 stops33h 44m

$1,810

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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How to get the cheapest flight ticket from District of Columbia 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 District of Columbia 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.

Cheap District of Columbia to Trieste flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Trieste

Direct flights

None
There are no direct flights from District of Columbia to Trieste. There are no popular flight routes from District of Columbia to Trieste.
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  • When did momondo last update prices for flights from District of Columbia to Trieste Ronchi dei Legionari Airport?

    Prices for flights from District of Columbia to Trieste Ronchi dei Legionari Airport refresh daily.

  • How many operators does momondo search for flights from District of Columbia to Trieste Ronchi dei Legionari Airport?

  • How old do you have to be to fly from District of Columbia to Trieste Ronchi dei Legionari Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia 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.

Best airlines flying from District of Columbia to Trieste

Compare and see reviews for airlines that fly from District of Columbia to Trieste with momondo
Airline
Rating
Free Cancellation
Price
ITA AirwaysPriceFrom $664Free CancellationRating
6.7
1,082 reviews
Search ITA Airways flights

Traveling to a place near Trieste?

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

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Trieste?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from District of Columbia to Trieste. momondo saves you time and could save you money on your trip.

Can I find flights from District of Columbia to Trieste with flexible booking policies on momondo?

momondo does allow users to show only those flights to Trieste from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from District of Columbia to Trieste?

momondo provides multiple filters to help you find the best flight to Trieste from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from District of Columbia to Trieste right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of District of Columbia to Trieste flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
United Airlines
Turkish Airlines
British Airways
ITA Airways
Delta
TAP AIR PORTUGAL
Lufthansa
Aer Lingus
Scandinavian Airlines
American Airlines
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