Houston

$357+ Cheap flights from Portugal to Houston

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Mar 13 — Mar 201
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Cheap flight deals from Portugal to Houston

Cheapest flights from Portugal to Houston
Explore the most affordable flight options available from Portugal to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Mytrip deal was found by Cheapflights users on 2/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:05 pm
LIS
-
IAH
2 stops33h 44m
Multiple Airlines
Mon 4/1311:41 am
IAH
-
LIS
3 stops29h 19m
Multiple Airlines
Deal found 2/9$758
This deal was found by Cheapflights users on 2/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:20 am
LIS
-
IAH
1 stop17h 50m
British Airways
Sun 5/39:05 pm
IAH
-
LIS
1 stop14h 40m
British Airways
Deal found 2/10$812
This KLM deal was found by Cheapflights users on 2/8. 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.
Tue 3/104:50 pm
LIS
-
IAH
1 stop26h 40m
Multiple Airlines
Tue 3/175:05 pm
IAH
-
LIS
1 stop13h 15m
Multiple Airlines
Deal found 2/8$832
This KLM deal was found by Cheapflights users on 2/10. 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.
Mon 3/23:30 pm
LIS
-
IAH
1 stop28h 00m
KLM
Sun 3/84:30 pm
IAH
-
LIS
1 stop17h 05m
KLM
Deal found 2/10$839
This Delta deal was found by Cheapflights users on 2/8. 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.
Tue 3/105:00 am
LIS
-
IAH
2 stops18h 28m
Delta
Tue 3/176:54 pm
IAH
-
LIS
2 stops17h 36m
Delta
Deal found 2/8$840
This Delta deal was found by Cheapflights users on 2/9. 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.
Mon 3/305:00 am
LIS
-
IAH
1 stop14h 15m
Delta
Mon 4/136:46 pm
IAH
-
LIS
2 stops17h 59m
Delta
Deal found 2/9$845
This Delta deal was found by Cheapflights users on 2/10. 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.
Mon 3/25:00 am
LIS
-
IAH
2 stops18h 35m
Delta
Sun 3/84:30 pm
IAH
-
LIS
1 stop13h 05m
Delta
Deal found 2/10$849
This Mytrip deal was found by Cheapflights users on 2/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/292:10 pm
LIS
-
IAH
3 stops34h 04m
Multiple Airlines
Mon 4/1311:41 am
IAH
-
LIS
3 stops29h 19m
Multiple Airlines
Deal found 2/11$850
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1112:35 pm
LIS
-
IAH
2 stops26h 38m
Multiple Airlines
Wed 2/185:24 pm
IAH
-
LIS
1 stop13h 11m
Multiple Airlines
Deal found 2/10$853
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Mon 3/305:05 am
LIS
-
IAH
1 stop18h 55m
United Airlines
Mon 4/132:43 pm
IAH
-
LIS
1 stop11h 37m
United Airlines
Deal found 2/9$863
This KLM deal was found by Cheapflights users on 2/9. 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.
Mon 2/1611:25 am
LIS
-
IAH
1 stop32h 05m
Multiple Airlines
Mon 3/24:05 pm
IAH
-
LIS
1 stop17h 05m
Multiple Airlines
Deal found 2/9$869
This Delta deal was found by Cheapflights users on 2/8. 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.
Tue 3/105:00 am
LIS
-
HOU
2 stops22h 42m
Delta
Tue 3/175:22 pm
HOU
-
LIS
2 stops19h 08m
Delta
Deal found 2/8$875

Find flight deals from Portugal to Houston

Keep the following information in mind while searching for Portugal to Houston flight deals. Data was last updated February 11, 2026.

Round-trip from

$758
(Mytrip)

One-way from

$357
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$797
From Portugal to Houston
One-way flight from Portugal to Houston
Highest demand for flights based on searches. 11% potential increase in price ($125 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Houston 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 February 11, 2026.
Use the filters below to find and compare flights from Portugal to Houston that are best for you.

Fly from

Portugal

Fly to

Houston

Route

Depart

Return

Price

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 3/30

8:05 pm-11:49 pm

2 stops33h 44m

Houston George Bush Intcntl

Mon 4/13

11:41 am-11:00 pm

3 stops29h 19m

$758

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 4/26

7:20 am-7:10 pm

1 stop17h 50m

Houston George Bush Intcntl

Sun 5/3

9:05 pm-5:45 pm

1 stop14h 40m

$812

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 3/10

4:50 pm-2:30 pm

1 stop26h 40m

Houston George Bush Intcntl

Tue 3/17

5:05 pm-11:20 am

1 stop13h 15m

$832

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 3/2

3:30 pm-1:30 pm

1 stop28h 00m

Houston George Bush Intcntl

Sun 3/8

4:30 pm-2:35 pm

1 stop17h 05m

$839

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 3/10

5:00 am-6:28 pm

2 stops18h 28m

Houston George Bush Intcntl

Tue 3/17

6:54 pm-5:30 pm

2 stops17h 36m

$840

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 3/30

5:00 am-1:15 pm

1 stop14h 15m

Houston George Bush Intcntl

Mon 4/13

3:50 pm-11:15 am

1 stop13h 25m

$840

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 3/2

5:00 am-5:35 pm

2 stops18h 35m

Houston George Bush Intcntl

Sun 3/8

4:30 pm-10:35 am

1 stop13h 05m

$849

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 3/29

2:10 pm-6:14 pm

3 stops34h 04m

Houston George Bush Intcntl

Mon 4/13

11:41 am-11:00 pm

3 stops29h 19m

$850

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 3/30

5:05 am-6:00 pm

1 stop18h 55m

Houston George Bush Intcntl

Mon 4/13

2:43 pm-8:20 am

1 stop11h 37m

$863

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Tue 3/10

5:00 am-10:42 pm

2 stops22h 42m

Houston Hobby

Tue 3/17

5:22 pm-5:30 pm

2 stops19h 08m

$875

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 37 results
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Best time to book a flight from Portugal to Houston

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

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

Currently, January is the cheapest month in which you can book a flight from Portugal to Houston (average of $525). Flying from Portugal to Houston in July is currently the most expensive (average of $1,000). 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.

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated February 11, 2026.
Peruse reviews from past customers who have flown with United Airlines from Portugal to Houston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Portugal to Houston. 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 Portugal to Houston?

    Departing from Portugal to Houston will take you 16h 35m. The distance from Portugal to Houston is about 4767 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Portugal to Houston (average of $525). Flying from Portugal to Houston in July is currently the most expensive (average of $1,000). 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

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Alternative routes for Portugal to Houston

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Portugal to Houston

Discover the top airline that operate flights from Portugal to Houston. 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$794Average$854FlexibilityNo cancel feeOn-time69%

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