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Cheap flights from Houston George Bush Intcntl Airport to Trieste from $478

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston George Bush Intcntl Airport to Trieste departing on 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Houston George Bush Intcntl Airport to Trieste

Cheap round-trip flights

Enter your travel dates to find the best prices.
ITA Airways Logo
6:25 pm - 2:30 pm
IAH
-
TRS
13h 05m
1 stop
ITA Airways Logo
7:15 pm - 4:25 pm
TRS
-
IAH
28h 10m
1 stop
$871ITA Airways
Wed, Dec 2 - Sun, Dec 6
ITA Airways Logo
6:10 pm - 10:55 pm
IAH
-
TRS
21h 45m
1 stop
ITA Airways Logo
3:15 pm - 3:40 pm
TRS
-
IAH
31h 25m
1 stop
$897ITA Airways
Wed, Aug 26 - Sun, Sep 20
ITA Airways Logo
6:10 pm - 2:30 pm
IAH
-
TRS
13h 20m
1 stop
ITA Airways Logo
6:35 am - 3:40 pm
TRS
-
IAH
16h 05m
1 stop
$927ITA Airways
Wed, Sep 2 - Mon, Sep 28
ITA Airways Logo
6:10 pm - 10:25 am
IAH
-
TRS
33h 15m
1 stop
ITA Airways Logo
11:15 am - 3:40 pm
TRS
-
IAH
35h 25m
1 stop
$933ITA Airways
Fri, Aug 28 - Sun, Sep 20
Lufthansa Logo
6:40 pm - 10:25 pm
IAH
-
TRS
20h 45m
2 stops
Lufthansa Logo
2:50 pm - 1:35 pm
TRS
-
IAH
29h 45m
1 stop
$938Lufthansa
Wed, Aug 26 - Mon, Sep 21
ITA Airways Logo
6:10 pm - 10:25 am
IAH
-
TRS
33h 15m
1 stop
ITA Airways Logo
6:35 am - 3:40 pm
TRS
-
IAH
16h 05m
1 stop
$946ITA Airways
Sat, Aug 29 - Mon, Sep 21
ITA Airways Logo
6:10 pm - 6:30 pm
IAH
-
TRS
17h 20m
1 stop
ITA Airways Logo
6:35 am - 3:40 pm
TRS
-
IAH
16h 05m
1 stop
$976ITA Airways
Wed, Sep 2 - Sat, Sep 26
ITA Airways Logo
6:10 pm - 2:30 pm
IAH
-
TRS
13h 20m
1 stop
ITA Airways Logo
7:15 pm - 3:40 pm
TRS
-
IAH
27h 25m
1 stop
$981ITA Airways
Fri, Sep 4 - Sun, Sep 27
ITA Airways Logo
6:10 pm - 6:30 pm
IAH
-
TRS
17h 20m
1 stop
ITA Airways Logo
6:35 am - 3:40 pm
TRS
-
IAH
16h 05m
1 stop
$995ITA Airways
Fri, Aug 28 - Sat, Sep 19
Lufthansa Logo
3:35 pm - 2:00 pm
IAH
-
TRS
15h 25m
1 stop
Lufthansa Logo
6:10 am - 5:19 pm
TRS
-
IAH
18h 09m
2 stops
$996Lufthansa
Wed, Aug 26 - Sun, Sep 20

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Lufthansa flights from Houston George Bush Intcntl Airport to Trieste

Our best Lufthansa deals on Houston George Bush Intcntl Airport to Trieste flight tickets
Lufthansa
Aug 26
IAH6:40 pmHouston George Bush Intcntl
20h 45m
2 stops
TRS10:25 pmTrieste Ronchi dei Legionari
Sep 21
TRS2:50 pmTrieste Ronchi dei Legionari
29h 45m
1 stop
IAH1:35 pmHouston George Bush Intcntl
$938
Lufthansa
Aug 26
IAH3:35 pmHouston George Bush Intcntl
15h 25m
1 stop
TRS2:00 pmTrieste Ronchi dei Legionari
Sep 20
TRS6:10 amTrieste Ronchi dei Legionari
18h 09m
2 stops
IAH5:19 pmHouston George Bush Intcntl
$996
Lufthansa
Aug 28
IAH8:10 pmHouston George Bush Intcntl
43h 05m
2 stops
TRS10:15 pmTrieste Ronchi dei Legionari
Sep 20
TRS6:10 amTrieste Ronchi dei Legionari
18h 09m
2 stops
IAH5:19 pmHouston George Bush Intcntl
$1,029

KLM flights from Houston George Bush Intcntl Airport to Trieste

Our best KLM deals on Houston George Bush Intcntl Airport to Trieste flight tickets
KLM
Aug 27
IAH2:27 pmHouston George Bush Intcntl
21h 03m
2 stops
TRS6:30 pmTrieste Ronchi dei Legionari
Sep 21
TRS6:35 amTrieste Ronchi dei Legionari
22h 30m
2 stops
IAH10:05 pmHouston George Bush Intcntl
$1,042
KLM
Aug 26
IAH3:25 pmHouston George Bush Intcntl
24h 30m
2 stops
TRS10:55 pmTrieste Ronchi dei Legionari
Sep 20
TRS3:15 pmTrieste Ronchi dei Legionari
29h 05m
2 stops
IAH1:20 pmHouston George Bush Intcntl
$1,207

momondo Fare Finder

 
Customize your flight search to find flights from Houston George Bush Intcntl 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 July 26, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Wed 12/2

6:25 pm-2:30 pm

1 stop13h 05m

Trieste Ronchi dei Legionari

Sun 12/6

7:15 pm-4:25 pm

1 stop28h 10m

$871

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Wed 8/26

6:10 pm-10:55 pm

1 stop21h 45m

Trieste Ronchi dei Legionari

Sun 9/20

3:15 pm-3:40 pm

1 stop31h 25m

$897
Quickest round-trip

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Wed 9/2

6:10 pm-2:30 pm

1 stop13h 20m

Trieste Ronchi dei Legionari

Mon 9/28

6:35 am-3:40 pm

1 stop16h 05m

$927

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Fri 8/28

6:10 pm-10:25 am

1 stop33h 15m

Trieste Ronchi dei Legionari

Sun 9/20

11:15 am-3:40 pm

1 stop35h 25m

$933

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Wed 8/26

6:40 pm-10:25 pm

2 stops20h 45m

Trieste Ronchi dei Legionari

Mon 9/21

2:50 pm-1:35 pm

1 stop29h 45m

$938

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Sat 8/29

6:10 pm-10:25 am

1 stop33h 15m

Trieste Ronchi dei Legionari

Mon 9/21

6:35 am-3:40 pm

1 stop16h 05m

$946

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Wed 9/2

6:10 pm-6:30 pm

1 stop17h 20m

Trieste Ronchi dei Legionari

Sat 9/26

6:35 am-3:40 pm

1 stop16h 05m

$976

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Fri 9/4

6:10 pm-2:30 pm

1 stop13h 20m

Trieste Ronchi dei Legionari

Sun 9/27

7:15 pm-3:40 pm

1 stop27h 25m

$981

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Fri 8/28

6:10 pm-6:30 pm

1 stop17h 20m

Trieste Ronchi dei Legionari

Sat 9/19

6:35 am-3:40 pm

1 stop16h 05m

$995

HoustonTrieste

IAH - TRS

IAHTRS

Houston George Bush Intcntl

Wed 8/26

3:35 pm-2:00 pm

1 stop15h 25m

Trieste Ronchi dei Legionari

Sun 9/20

6:10 am-5:19 pm

2 stops18h 09m

$996

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
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See travel insights to Trieste from

How to get the cheapest flight ticket from Houston George Bush Intcntl 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 airline that flies from Houston George Bush Intcntl to Trieste Ronchi dei Legionari?

Lufthansa is the most popular carrier operating from Houston George Bush Intcntl to Trieste Ronchi dei Legionari

What airlines fly to Trieste?

Turkish Airlines, United Airlines and Lufthansa are the top three most popular airlines that fly to Trieste from Houston George Bush Intcntl Airport according to our data. Turkish Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Trieste. Keep in mind that there are 5 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 Houston George Bush Intcntl Airport to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from Houston George Bush Intcntl Airport to Trieste according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Houston George Bush Intcntl Airport to Trieste (IAH to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston George Bush Intcntl Airport to Trieste

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from Houston George Bush Intcntl Airport to Trieste takes 13h 05m
There are no direct flights from Houston George Bush Intcntl Airport to Trieste. There are no popular flight routes from Houston George Bush Intcntl Airport to Trieste.
Search flight deals

Frequently asked questions about flying from Houston George Bush Intcntl Airport to Trieste

  • How far is Houston George Bush Intcntl to Trieste Ronchi dei Legionari by plane?

    The distance between Houston George Bush Intcntl and Trieste Ronchi dei Legionari is about 5581.8 mi. By plane, this route typically takes 13h 05m.

  • When did momondo last update prices for flights from Houston George Bush Intcntl Airport to Trieste Ronchi dei Legionari Airport?

    Prices for flights from Houston George Bush Intcntl Airport to Trieste Ronchi dei Legionari Airport were last updated today.

  • How many operators does momondo search for flights from Houston George Bush Intcntl Airport to Trieste Ronchi dei Legionari Airport?

  • How old do you have to be to fly from Houston George Bush Intcntl Airport to Trieste Ronchi dei Legionari Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Houston George Bush Intcntl 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 Houston George Bush Intcntl Airport to Trieste?

Best airlines flying from Houston George Bush Intcntl Airport to Trieste

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to Trieste with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $650Free CancellationRating
6.8
8,155 reviews
Search Lufthansa flights

Traveling to a place near Trieste?

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

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Why should I use momondo to find a flight deal from Houston to Trieste?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Houston to Trieste for you.

Can I find flights from Houston to Trieste with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Trieste from Houston with this policy.

How can momondo help me find flights from Houston to Trieste?

Once you have performed a search for Houston 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 Houston to Trieste right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Houston 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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Fly your favorite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Turkish Airlines
United Airlines
Lufthansa
British Airways
Delta