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$317+ Cheap flights from Houston 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
avr. 6 — avr. 131
dim. 4/6
dim. 4/13
1 adult, Economy
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Cheap flight deals from Houston to Portugal

Keep the following information in mind while searching for Houston to Portugal flight deals. Data was last updated avril 1, 2025.

Round-trip from

$661
(Mytrip)

One-way from

$317
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$797
From Houston to Portugal
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One-way flight from Houston to Portugal
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Highest demand for flights based on searches. 9% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Houston to Portugal

Cheapest flights from Houston to Portugal
Explore the most affordable flight options available from Houston to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 1, 2025.

This Orbitz deal was found by Cheapflights users on 3/30. 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.
lun. 11/247:20 amIAH - LIS
1 stop20h 00mMultiple Airlines
lun. 12/13:55 pmLIS - IAH
2 stops35h 19mMultiple Airlines
Deal found 3/30$650
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 11/1411:55 amIAH - LIS
1 stop16h 20mUnited Airlines
mar. 11/1811:00 amLIS - IAH
2 stops38h 00mUnited Airlines
Deal found 3/31$668
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/51:38 pmIAH - OPO
1 stop12h 07mUnited Airlines
jeu. 8/2112:10 pmOPO - IAH
2 stops35h 10mUnited Airlines
Deal found 3/31$677
This Air Canada deal was found by Cheapflights users on 3/31. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 11/149:30 amIAH - LIS
2 stops17h 50mAir Canada
mar. 11/185:00 amLIS - IAH
2 stops22h 14mAir Canada
Deal found 3/31$682
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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.
lun. 11/246:20 pmIAH - LIS
2 stops22h 30mLufthansa
lun. 12/16:10 amLIS - IAH
2 stops38h 30mLufthansa
Deal found 3/30$712
This Delta deal was found by Cheapflights users on 3/31. 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.
ven. 11/141:00 pmHOU - LIS
2 stops20h 10mDelta
mar. 11/185:00 amLIS - HOU
2 stops22h 40mDelta
Deal found 3/31$713
This Iberia deal was found by Cheapflights users on 3/31. 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.
mar. 10/76:43 pmHOU - OPO
2 stops15h 12mIberia
jeu. 10/1612:20 pmOPO - HOU
2 stops17h 24mIberia
Deal found 3/31$715
This Iberia deal was found by Cheapflights users on 3/31. 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.
mar. 10/76:34 pmIAH - OPO
2 stops15h 21mIberia
jeu. 10/1612:20 pmOPO - IAH
2 stops17h 23mIberia
Deal found 3/31$715
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/279:00 pmIAH - LIS
1 stop36h 30mTurkish Airlines
ven. 9/511:10 amLIS - IAH
1 stop37h 55mTurkish Airlines
Deal found 3/30$729
This Air Canada deal was found by Cheapflights users on 3/31. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 11/19:30 amIAH - OPO
2 stops24h 45mAir Canada
sam. 11/158:40 amOPO - IAH
2 stops19h 53mAir Canada
Deal found 3/31$741
This American Airlines deal was found by Cheapflights users on 4/1. 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.
mar. 11/2512:25 pmHOU - LIS
2 stops14h 50mAmerican Airlines
mar. 12/211:10 amLIS - HOU
2 stops18h 35mAmerican Airlines
Deal found 4/1$744
This Delta deal was found by Cheapflights users on 3/31. 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.
mer. 10/151:15 pmIAH - LIS
2 stops19h 35mDelta
ven. 10/245:00 amLIS - IAH
2 stops17h 34mDelta
Deal found 3/31$748

Cheapflights Fare Finder

Customize your flight search to find flights from Houston 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 avril 1, 2025.
Use the filters below to find and compare flights from Houston to Portugal that are best for you.

Fly from

Houston

Fly to

Portugal

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

lun. 5/5

8:25 am-11:05 pm

2 stops32h 40m

Lisbon Humberto Delgado

lun. 5/12

11:35 am-12:16 pm

2 stops30h 41m

$661

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

mar. 8/5

1:38 pm-7:45 am

1 stop12h 07m

Porto

jeu. 8/21

12:10 pm-5:20 pm

2 stops35h 10m

$677

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

mer. 8/27

9:00 pm-3:30 pm

1 stop36h 30m

Lisbon Humberto Delgado

ven. 9/5

11:10 am-7:05 pm

1 stop37h 55m

$729

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

ven. 8/8

6:39 pm-3:55 pm

2 stops15h 16m

Porto

ven. 8/22

12:20 pm-11:42 pm

2 stops17h 22m

$775

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

ven. 8/8

6:32 pm-3:55 pm

2 stops15h 23m

Porto

ven. 8/22

12:20 pm-12:16 am

2 stops17h 56m

$775

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

jeu. 5/1

9:36 am-10:50 pm

2 stops31h 14m

Porto

ven. 5/23

11:35 am-11:01 pm

2 stops17h 26m

$778

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

mer. 9/17

10:00 am-9:20 am

1 stop17h 20m

Lisbon Humberto Delgado

mer. 9/24

11:25 am-4:55 pm

2 stops35h 30m

$784

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

mar. 8/5

2:29 pm-3:55 pm

2 stops19h 26m

Porto

jeu. 8/21

8:15 am-11:42 pm

2 stops21h 27m

$788

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

mer. 8/13

10:00 am-9:20 am

1 stop17h 20m

Lisbon Humberto Delgado

mer. 8/20

11:25 am-7:36 pm

1 stop14h 11m

$797

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

mar. 8/5

6:13 pm-9:20 am

2 stops33h 07m

Porto

jeu. 8/21

12:10 pm-10:07 pm

2 stops15h 57m

$798

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 52 results
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Best time to book a flight from Houston to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Houston to Portugal (average of $612). Flying from Houston to Portugal in June is currently the most expensive (average of $1,203). 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.

What is the cheapest time of day to fly from HOU to PT?

Find hourly flight availability from Houston to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated avril 1, 2025.

When flying from Houston to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated avril 1, 2025.
To help decide which airline to fly from Houston to Portugal, see what other customers have to say about Delta, KLM and Austrian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
771 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,570 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

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

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $500. United Airlines flights start at $553 while deals on Aer Lingus start at $588 one-way.

  • What are the most popular routes from Houston to Portugal?

    While some choose either Houston George Bush Intcntl - Lisbon Humberto Delgado or Houston Hobby - Porto, Houston Hobby - Lisbon Humberto Delgado is the most popular route from Houston to Portugal.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Houston to Portugal (average of $612). Flying from Houston to Portugal in June is currently the most expensive (average of $1,203). 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 Houston to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Houston to Portugal

Discover the top 9 airlines that operate flights from Houston 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 avril 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$494Average$929FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$549Average$863FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$563Average$906FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$565Average$1,521FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$586Average$844FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$590Average$1,205FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$595Average$1,042FlexibilityNo cancel feeOn-time71%
KLMCheapest$635Average$1,056FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$649Average$713FlexibilityNo cancel feeOn-time77%

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