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$557+ 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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
1 adult, Economy
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Find 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 octubre 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
jue. 10/305:55 pmLIS - IAH
2 stops45h 12mMultiple Airlines
mié. 11/126:21 pmIAH - LIS
1 stop33h 34mMultiple Airlines
Deal found 10/16$782
This KLM deal was found by Cheapflights users on 10/15. 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.
jue. 10/305:30 amLIS - IAH
1 stop14h 25mAir France
mié. 11/121:36 pmIAH - LIS
2 stops15h 44mAir France
Deal found 10/15$823
This KLM deal was found by Cheapflights users on 10/16. 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.
lun. 10/205:00 amLIS - IAH
1 stop14h 15mMultiple Airlines
dom. 10/265:05 pmIAH - LIS
1 stop13h 15mMultiple Airlines
Deal found 10/16$864
This Delta deal was found by Cheapflights users on 10/16. 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.
lun. 10/205:00 amLIS - IAH
1 stop14h 15mDelta
dom. 10/264:21 pmIAH - LIS
2 stops20h 09mDelta
Deal found 10/16$867
This Delta deal was found by Cheapflights users on 10/16. 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.
jue. 10/305:30 amLIS - IAH
1 stop14h 25mDelta
mié. 11/124:05 pmIAH - LIS
1 stop19h 25mDelta
Deal found 10/16$893
This KLM deal was found by Cheapflights users on 10/16. 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.
jue. 10/167:30 pmLIS - IAH
1 stop23h 45mMultiple Airlines
lun. 10/201:29 pmIAH - LIS
2 stops15h 16mMultiple Airlines
Deal found 10/16$964
This Delta deal was found by Cheapflights users on 10/15. 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.
jue. 10/305:00 amLIS - HOU
2 stops23h 00mDelta
mié. 11/126:00 amHOU - LIS
2 stops23h 20mDelta
Deal found 10/15$1,070
This eDestinos deal was found by Cheapflights users on 10/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/308:45 pmLIS - HOU
2 stops29h 05mIberia
dom. 12/710:13 amHOU - LIS
2 stops19h 37mIberia
Deal found 10/16$1,286
This SmartFares deal was found by Cheapflights users on 10/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/294:45 pmLIS - HOU
2 stops21h 50mIberia
sáb. 12/610:08 amHOU - LIS
2 stops23h 57mIberia
Deal found 10/15$1,537
This KLM deal was found by Cheapflights users on 10/16. 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.
dom. 11/3011:25 amLIS - HOU
2 stops18h 15mMultiple Airlines
dom. 12/710:39 amHOU - LIS
2 stops15h 21mMultiple Airlines
Deal found 10/16$1,668
This Cheapflightsfares deal was found by Cheapflights users on 10/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/318:20 amLIS - HOU
2 stops17h 25mIberia
lun. 7/276:36 pmHOU - LIS
2 stops15h 29mIberia
Deal found 10/14$4,097
This KLM deal was found by Cheapflights users on 10/16. 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.
jue. 10/1612:45 pmLIS - HOU
2 stops16h 15mAir France
lun. 10/202:22 pmHOU - LIS
2 stops14h 23mAir France
Deal found 10/16$5,776

Cheap flight deals from Portugal to Houston

Keep the following information in mind while searching for Portugal to Houston flight deals. Data was last updated octubre 16, 2025.

Round-trip from

$782
(Kiwi.com)

One-way from

$557
(Finnair)

Popular in

July

Cheapest in

February

Average price

$866
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 ($126 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 octubre 16, 2025.
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

jue. 10/30

11:25 am-2:30 pm

1 stop32h 05m

Houston George Bush Intcntl

mié. 11/12

4:05 pm-11:20 am

1 stop13h 15m

$821

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 10/30

5:30 am-2:55 pm

1 stop14h 25m

Houston George Bush Intcntl

mié. 11/12

12:30 pm-3:10 pm

2 stops20h 40m

$823

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 10/30

5:30 am-2:55 pm

1 stop14h 25m

Houston George Bush Intcntl

mié. 11/12

1:36 pm-11:20 am

2 stops15h 44m

$823

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 2/19

10:55 am-9:27 pm

1 stop16h 32m

Houston George Bush Intcntl

lun. 2/23

3:50 pm-9:55 pm

1 stop24h 05m

$842

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 1/15

10:55 am-10:25 pm

1 stop17h 30m

Houston George Bush Intcntl

lun. 1/19

3:50 pm-12:05 pm

1 stop14h 15m

$843

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

jue. 1/15

10:55 am-10:46 pm

2 stops17h 51m

Houston Hobby

lun. 1/19

12:47 pm-9:05 am

2 stops14h 18m

$859

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

jue. 1/15

10:00 am-9:46 pm

2 stops17h 46m

Houston Hobby

lun. 1/19

10:30 am-8:00 am

2 stops15h 30m

$879

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

jue. 1/15

10:00 am-9:46 pm

2 stops17h 46m

Houston Hobby

lun. 1/19

10:30 am-8:00 am

2 stops15h 30m

$885

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

jue. 10/30

5:00 am-11:00 pm

2 stops23h 00m

Houston Hobby

mié. 11/12

6:00 am-11:20 am

2 stops23h 20m

$1,070

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

vie. 3/27

11:25 am-9:32 am

2 stops27h 07m

Houston Hobby

vie. 4/10

6:00 am-8:00 am

2 stops20h 00m

$1,139

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 29 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 $560). 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 octubre 16, 2025.
Peruse reviews from past customers who have flown with United Airlines and American 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
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,982 reviews
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,043 reviews
United Airlines
7.4
Good
8,982 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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 14h 25m. The distance from Portugal to Houston is about 4767 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $558. British Airways flights start at $591 while deals on Delta start at $782 one-way.

  • 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 $560). 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

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Top 2 airlines flying from Portugal to Houston

Discover the top 2 airlines 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 octubre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$767Average$838FlexibilityNo cancel feeOn-time69%

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