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$230+ Cheap flights from Texas to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — LIS
Jul 23 — Jul 301
Thu 7/23
Thu 7/30
1 adult, Economy
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Cheap flight deals from Texas to Portugal

Cheapest flights from Texas to Portugal
Explore the most affordable flight options available from Texas to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2026.

This Gotogate deal was found by Cheapflights users on 6/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/43:30 pm
IAH
-
LIS
1 stop13h 30m
Multiple Airlines
Wed 11/115:00 am
LIS
-
IAH
1 stop15h 00m
Multiple Airlines
Deal found 6/20$704
This Gotogate deal was found by Cheapflights users on 6/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:00 pm
IAH
-
LIS
2 stops15h 50m
Multiple Airlines
Wed 11/185:00 am
LIS
-
IAH
1 stop15h 00m
Multiple Airlines
Deal found 6/19$705
This Gotogate deal was found by Cheapflights users on 6/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/31:10 pm
AUS
-
LIS
1 stop15h 50m
Multiple Airlines
Tue 11/105:00 am
LIS
-
AUS
1 stop15h 05m
Multiple Airlines
Deal found 6/20$706
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sun 12/610:00 am
IAH
-
OPO
1 stop17h 30m
United Airlines
Thu 12/106:00 am
OPO
-
IAH
1 stop18h 15m
United Airlines
Deal found 6/22$707
This KLM deal was found by Cheapflights users on 6/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:05 pm
IAH
-
OPO
1 stop12h 30m
KLM
Fri 11/135:00 am
OPO
-
IAH
1 stop14h 05m
KLM
Deal found 6/21$708
This Delta deal was found by Cheapflights users on 6/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:15 am
IAH
-
OPO
2 stops20h 20m
Delta
Fri 11/135:00 am
OPO
-
IAH
1 stop14h 05m
Delta
Deal found 6/21$713
This Air France deal was found by Cheapflights users on 6/22. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:05 pm
IAH
-
LIS
1 stop17h 05m
Multiple Airlines
Wed 11/1811:30 am
LIS
-
IAH
1 stop31h 55m
Multiple Airlines
Deal found 6/22$715
This Delta deal was found by Cheapflights users on 6/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 am
HOU
-
OPO
2 stops21h 05m
Delta
Fri 11/135:00 am
OPO
-
HOU
2 stops22h 43m
Delta
Deal found 6/21$723
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Tue 11/1012:10 pm
IAH
-
LIS
1 stop15h 40m
United Airlines
Wed 11/185:00 am
LIS
-
IAH
1 stop15h 00m
United Airlines
Deal found 6/22$723
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Wed 11/117:30 am
IAH
-
LIS
1 stop18h 40m
United Airlines
Thu 11/195:00 am
LIS
-
IAH
1 stop19h 15m
United Airlines
Deal found 6/22$724
This KLM deal was found by Cheapflights users on 6/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:05 pm
AUS
-
LIS
1 stop12h 55m
KLM
Wed 12/211:30 am
LIS
-
AUS
1 stop34h 35m
KLM
Deal found 6/22$726
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Wed 11/189:50 am
IAH
-
LIS
2 stops18h 30m
United Airlines
Fri 11/275:00 am
LIS
-
IAH
1 stop15h 00m
United Airlines
Deal found 6/18$729

Find flight deals from Texas to Portugal

Keep the following information in mind while searching for Texas to Portugal flight deals. Data was last updated June 23, 2026.

Round-trip from

$704
(Gotogate)

One-way from

$230
(KAYAK)

Popular in

June

Cheapest in

April

Average price

$1,361
From Texas to Portugal
Search Deals
One-way flight from Texas to Portugal
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($344 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Texas to Portugal 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 June 23, 2026.
Use the filters below to find and compare flights from Texas to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 12/7

1:35 pm-9:30 am

1 stop13h 55m

Porto

Thu 12/10

6:00 am-6:15 pm

1 stop18h 15m

$707

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 12/6

12:00 pm-9:30 am

2 stops15h 30m

Porto

Thu 12/10

6:00 am-6:15 pm

1 stop18h 15m

$712

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sun 11/8

6:00 am-9:05 am

2 stops21h 05m

Porto

Fri 11/13

5:00 am-9:43 pm

2 stops22h 43m

$723
Quickest round-trip

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/10

12:10 pm-9:50 am

1 stop15h 40m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-2:00 pm

1 stop15h 00m

$723

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 11/11

9:40 am-11:20 am

2 stops19h 40m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-1:25 pm

1 stop14h 25m

$730

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Tue 11/10

1:00 pm-11:20 am

2 stops16h 20m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-9:43 pm

2 stops22h 43m

$739

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Wed 11/11

10:05 am-3:10 pm

2 stops23h 05m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-9:43 pm

2 stops22h 43m

$739

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 11/18

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Mon 11/30

6:30 pm-1:55 pm

1 stop25h 25m

$763

AustinLisbon

AUS - LIS

AUSLIS

Austin Bergstrom

Wed 12/2

6:30 am-8:10 am

1 stop19h 40m

Lisbon Humberto Delgado

Fri 12/11

1:00 pm-12:19 pm

1 stop29h 19m

$770

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Wed 10/21

10:05 am-8:00 am

2 stops15h 55m

Lisbon Humberto Delgado

Wed 10/28

10:00 am-9:43 pm

2 stops16h 43m

$781

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Texas to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Texas 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 Texas to Portugal

What is the cheapest month to book a flight from Texas to Portugal?

Currently, January is the cheapest month in which you can book a flight from Texas to Portugal (average of $310). Flying from Texas to Portugal in May is currently the most expensive (average of $2,852). 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.

How far ahead should I book a flight from Texas to Portugal?

The best time to book flights from Texas to Portugal is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

Find useful and relevant information for your journey from Texas to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Texas to Portugal?

    A quick flight from Texas to Portugal can take about 13h 55m. United Airlines provides one of the quickest options available for as low as $707. The distance from Texas to Portugal is about 4726 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Texas to Portugal one-way?

    One-way options have recently been found by users for as low as $237 on American Airlines. Other airlines that offer cheap prices include United Airlines from $238 and British Airways from $238 one-way.

  • Can I find deals for flights from Texas to Portugal that include hotel bookings?

    Yes. In addition to deals on Texas to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Texas to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Texas to Portugal.

  • Can I find deals for business class flights from Texas to Portugal?

    Yes. Cheapflights offers flight deals from Texas to Portugal 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 Texas to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Texas to Portugal (average of $310). Flying from Texas to Portugal in May is currently the most expensive (average of $2,852). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Texas to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Texas to Portugal

Discover the top 10 airlines that operate flights from Texas to Portugal. 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 June 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$445Average$770FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$457Average$1,003FlexibilityNo cancel feeOn-time76%
DeltaCheapest$466Average$931FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$476Average$936FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$492Average$993FlexibilityNo cancel feeOn-time69%
IberiaCheapest$493Average$870FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$502Average$1,010FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$516Average$944FlexibilityNo cancel feeOn-time67%
FinnairCheapest$518Average$787FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$521Average$758FlexibilityNo cancel feeOn-time77%

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