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Portugal

$277+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap 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 December 23, 2025.

This Orbitz deal was found by Cheapflights users on 12/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:30 pmIAH - LIS
1 stop24h 20mMultiple Airlines
Mon 1/51:40 pmLIS - IAH
2 stops55h 05mMultiple Airlines
Deal found 12/21$1,181
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:30 pmIAH - LIS
1 stop24h 20mLufthansa
Mon 1/512:35 pmLIS - IAH
1 stop35h 40mLufthansa
Deal found 12/21$1,240
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:05 pmIAH - OPO
2 stops35h 00mMultiple Airlines
Thu 1/18:40 amOPO - IAH
2 stops36h 00mMultiple Airlines
Deal found 12/22$1,361
This Finnair deal was found by Cheapflights users on 12/22. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:24 pmIAH - LIS
1 stop13h 41mMultiple Airlines
Mon 1/511:05 amLIS - IAH
1 stop17h 51mMultiple Airlines
Deal found 12/22$1,380
This American Airlines deal was found by Cheapflights users on 12/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 amIAH - LIS
1 stop21h 05mAmerican Airlines
Mon 1/511:05 amLIS - IAH
2 stops19h 53mAmerican Airlines
Deal found 12/22$1,385
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:05 pmIAH - LIS
1 stop11h 10mUnited Airlines
Fri 1/211:20 amLIS - IAH
2 stops32h 20mUnited Airlines
Deal found 12/21$1,473
This Kiwi.com deal was found by Cheapflights users on 12/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/274:30 pmIAH - LIS
1 stop24h 20mMultiple Airlines
Wed 12/3111:40 amLIS - IAH
1 stop37h 30mMultiple Airlines
Deal found 12/22$1,475
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:45 pmIAH - LIS
2 stops34h 05mMultiple Airlines
Tue 1/65:40 pmLIS - IAH
2 stops47h 59mMultiple Airlines
Deal found 12/22$1,530
This Priceline deal was found by Cheapflights users on 12/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:10 amIAH - LIS
1 stop19h 45mMultiple Airlines
Mon 12/296:20 amLIS - IAH
2 stops21h 40mMultiple Airlines
Deal found 12/22$1,534
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:21 pmHOU - LIS
2 stops19h 19mBritish Airways
Mon 12/296:35 pmLIS - HOU
2 stops31h 09mBritish Airways
Deal found 12/22$1,703
This oojo deal was found by Cheapflights users on 12/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:45 pmIAH - OPO
2 stops34h 05mMultiple Airlines
Tue 1/69:55 pmOPO - IAH
2 stops43h 44mMultiple Airlines
Deal found 12/21$1,750
This KLM deal was found by Cheapflights users on 12/22. 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.
Mon 12/293:30 pmIAH - OPO
1 stop21h 10mKLM
Tue 1/611:15 amOPO - IAH
2 stops18h 41mKLM
Deal found 12/22$1,784

Find flight deals from Houston to Portugal

Keep the following information in mind while searching for Houston to Portugal flight deals. Data was last updated December 23, 2025.

Round-trip from

$487
(Kiwi.com)

One-way from

$277
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$933
From Houston to Portugal
Search Deals
One-way flight from Houston to Portugal
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($222 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 23, 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

Thu 1/29

2:30 pm-8:10 am

1 stop11h 40m

Lisbon Humberto Delgado

Tue 2/3

5:00 am-6:15 pm

1 stop19h 15m

$528

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 1/21

7:10 am-9:20 am

1 stop20h 10m

Lisbon Humberto Delgado

Mon 1/26

3:25 pm-9:39 pm

2 stops36h 14m

$529

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/22

9:54 am-8:00 am

2 stops16h 06m

Lisbon Humberto Delgado

Thu 2/5

5:00 am-1:30 pm

1 stop14h 30m

$531

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 2/5

12:10 pm-7:55 am

1 stop13h 45m

Lisbon Humberto Delgado

Wed 2/18

5:00 am-6:15 pm

1 stop19h 15m

$532

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sat 3/21

10:50 pm-9:50 am

1 stop30h 00m

Lisbon Humberto Delgado

Tue 3/31

6:45 pm-1:45 pm

1 stop25h 00m

$533

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 2/9

4:05 pm-11:20 am

1 stop13h 15m

Lisbon Humberto Delgado

Mon 2/16

11:25 am-1:30 pm

1 stop32h 05m

$535

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 2/12

4:05 pm-5:30 pm

1 stop19h 25m

Lisbon Humberto Delgado

Sun 2/22

11:25 am-1:30 pm

1 stop32h 05m

$535

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 2/6

7:10 am-9:20 am

1 stop20h 10m

Lisbon Humberto Delgado

Wed 2/18

5:00 am-6:15 pm

1 stop19h 15m

$535

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Sat 3/21

4:30 pm-9:35 am

1 stop36h 05m

Funchal Madeira

Sat 3/28

6:40 pm-1:15 pm

1 stop23h 35m

$542

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Thu 1/22

3:30 pm-5:10 pm

1 stop19h 40m

Funchal Madeira

Fri 2/6

6:00 pm-1:30 pm

1 stop25h 30m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 53 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, February is the cheapest month in which you can book a flight from Houston to Portugal (average of $510). Flying from Houston to Portugal in June is currently the most expensive (average of $823). 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 December 23, 2025.

When flying from Houston to Portugal, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 14% versus a flight at noon.

What is the cheapest day to fly from Houston to Portugal?

Use this chart to determine the cheapest time to fly round-trip from Houston to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Houston to Portugal flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 23, 2025.
Get a feel of what it's like to fly with Delta, Air France, and United Airlines from Houston to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,014 reviews
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air France
7.4
Good
1,513 reviews
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,106 reviews
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,551 reviews
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,606 reviews
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from Houston to Portugal?

    For as low as $528, United Airlines can have you in Portugal from Houston in 11h 40m. There are 4767 mi between Houston and Portugal. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from Houston to Portugal (average of $510). Flying from Houston to Portugal in June is currently the most expensive (average of $823). 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$536Average$972FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$540Average$809FlexibilityNo cancel feeOn-time77%
DeltaCheapest$546Average$881FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$583Average$977FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$588Average$1,019FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$597Average$948FlexibilityNo cancel feeOn-time67%
Turkish AirlinesCheapest$621Average$739FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$679Average$1,336FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$699Average$1,081FlexibilityNo cancel feeOn-time71%

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