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$348+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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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 January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sat 2/79:30 pm
LIS
-
IAH
2 stops47h 45m
Multiple Airlines
Mon 2/237:38 pm
IAH
-
LIS
1 stop27h 47m
Multiple Airlines
Deal found 1/27$698
This Iberia deal was found by Cheapflights users on 1/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:30 am
LIS
-
IAH
2 stops22h 12m
Multiple Airlines
Sat 2/219:50 pm
IAH
-
LIS
1 stop14h 05m
Multiple Airlines
Deal found 1/25$733
This British Airways deal was found by Cheapflights users on 1/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/510:55 am
LIS
-
IAH
1 stop17h 29m
British Airways
Sat 2/219:50 pm
IAH
-
LIS
1 stop32h 15m
British Airways
Deal found 1/25$735
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/710:40 am
LIS
-
IAH
2 stops17h 50m
American Airlines
Mon 2/231:01 pm
IAH
-
LIS
2 stops14h 04m
American Airlines
Deal found 1/26$744
This Iberia deal was found by Cheapflights users on 1/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/76:30 am
LIS
-
IAH
2 stops22h 12m
Iberia
Mon 2/2312:21 pm
IAH
-
LIS
2 stops17h 29m
Iberia
Deal found 1/26$756
This British Airways deal was found by Cheapflights users on 1/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:55 pm
LIS
-
IAH
1 stop24h 30m
British Airways
Tue 4/1412:29 pm
IAH
-
LIS
1 stop14h 36m
British Airways
Deal found 1/25$762
This Finnair deal was found by Cheapflights users on 1/25. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:35 am
LIS
-
IAH
2 stops20h 58m
Multiple Airlines
Tue 4/149:05 pm
IAH
-
LIS
1 stop19h 55m
Multiple Airlines
Deal found 1/25$777
This Delta deal was found by Cheapflights users on 1/26. 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.
Sat 2/75:00 am
LIS
-
HOU
2 stops23h 33m
Delta
Mon 2/231:06 pm
HOU
-
LIS
2 stops22h 24m
Delta
Deal found 1/26$794
This Mytrip deal was found by Cheapflights users on 1/26. 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.
Tue 2/1710:10 am
LIS
-
IAH
1 stop19h 49m
Multiple Airlines
Wed 2/187:05 am
IAH
-
LIS
1 stop16h 20m
Multiple Airlines
Deal found 1/26$796
This Delta deal was found by Cheapflights users on 1/25. 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.
Thu 2/55:00 am
LIS
-
HOU
2 stops23h 33m
Delta
Sat 2/215:25 am
HOU
-
LIS
2 stops21h 35m
Delta
Deal found 1/25$797
This Delta deal was found by Cheapflights users on 1/26. 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.
Fri 2/65:00 am
LIS
-
HOU
2 stops23h 33m
Delta
Sun 2/225:25 am
HOU
-
LIS
2 stops21h 30m
Delta
Deal found 1/26$798
This Orbitz deal was found by Cheapflights users on 1/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:35 am
LIS
-
HOU
2 stops43h 15m
Iberia
Tue 4/144:19 pm
HOU
-
LIS
2 stops20h 06m
Iberia
Deal found 1/25$940

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 January 27, 2026.

Round-trip from

$704
(Kiwi.com)

One-way from

$348
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$777
From Portugal to Houston
Search Deals
One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 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

Sat 2/7

9:30 pm-3:15 pm

2 stops47h 45m

Houston George Bush Intcntl

Mon 2/23

7:38 pm-5:25 am

1 stop27h 47m

$704

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 2/5

6:30 am-9:10 pm

2 stops20h 40m

Houston George Bush Intcntl

Sat 2/21

9:50 pm-5:55 pm

1 stop14h 05m

$733

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 2/6

8:20 am-10:49 pm

2 stops20h 29m

Houston George Bush Intcntl

Sun 2/22

9:50 pm-5:45 pm

1 stop13h 55m

$733

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 2/5

10:55 am-10:24 pm

1 stop17h 29m

Houston George Bush Intcntl

Sat 2/21

9:50 pm-12:05 pm

1 stop32h 15m

$735

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 2/6

11:05 am-10:30 pm

1 stop17h 25m

Houston George Bush Intcntl

Sun 2/22

9:50 pm-2:55 pm

1 stop35h 05m

$735

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 2/5

10:55 am-9:10 pm

2 stops16h 15m

Houston George Bush Intcntl

Sat 2/21

6:31 am-9:05 am

1 stop20h 34m

$744

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 2/7

10:40 am-10:30 pm

2 stops17h 50m

Houston George Bush Intcntl

Mon 2/23

1:01 pm-9:05 am

2 stops14h 04m

$744

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 2/6

11:05 am-10:40 pm

2 stops17h 35m

Houston George Bush Intcntl

Sun 2/22

10:17 am-9:05 am

2 stops16h 48m

$744

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Sat 2/7

5:00 am-10:33 pm

2 stops23h 33m

Houston Hobby

Mon 2/23

1:06 pm-5:30 pm

2 stops22h 24m

$794

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 2/5

5:00 am-10:33 pm

2 stops23h 33m

Houston Hobby

Sat 2/21

5:25 am-9:00 am

2 stops21h 35m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 33 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 January 27, 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.
United Airlines
7.4
Good
9,205 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

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
United Airlines
7.4
Good
9,205 reviews
United Airlines
7.4
Good
9,205 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

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 17h 29m. 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

Browse thousands of different options on Cheapflights for your next trip

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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.
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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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$794Average$854FlexibilityNo cancel feeOn-time69%

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