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Portugal

$342+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
Apr 27 — May 41
Mon 4/27
Mon 5/4
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 March 28, 2026.

This FlightHub deal was found by Cheapflights users on 3/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:05 pm
IAH
-
LIS
1 stop36h 30m
Turkish Airlines
Thu 9/2410:50 am
LIS
-
IAH
1 stop38h 20m
Turkish Airlines
Deal found 3/28$661
This FlightHub deal was found by Cheapflights users on 3/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:05 pm
IAH
-
LIS
1 stop36h 30m
Turkish Airlines
Wed 9/304:45 pm
LIS
-
IAH
1 stop32h 25m
Turkish Airlines
Deal found 3/25$663
This oojo deal was found by Cheapflights users on 3/24. 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.
Sun 4/199:05 pm
IAH
-
OPO
1 stop30h 35m
Turkish Airlines
Wed 4/2910:45 am
OPO
-
IAH
1 stop38h 25m
Turkish Airlines
Deal found 3/24$664
This FlightHub deal was found by Cheapflights users on 3/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:05 pm
IAH
-
LIS
1 stop36h 20m
Turkish Airlines
Tue 4/2110:55 am
LIS
-
IAH
1 stop38h 15m
Turkish Airlines
Deal found 3/27$672
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:05 pm
IAH
-
LIS
1 stop20h 30m
Turkish Airlines
Tue 5/55:55 am
LIS
-
IAH
1 stop19h 15m
Turkish Airlines
Deal found 3/26$673
This oojo deal was found by Cheapflights users on 3/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/222:30 pm
IAH
-
LIS
1 stop19h 05m
Turkish Airlines
Wed 5/65:55 am
LIS
-
IAH
1 stop19h 15m
Turkish Airlines
Deal found 3/26$676
This KLM deal was found by Cheapflights users on 3/23. 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 10/133:55 pm
IAH
-
OPO
1 stop17h 30m
KLM
Mon 10/194:25 pm
OPO
-
IAH
1 stop27h 15m
KLM
Deal found 3/23$679
This Turkish Airlines deal was found by Cheapflights users on 3/27. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:05 pm
IAH
-
OPO
1 stop20h 25m
Turkish Airlines
Thu 9/246:10 am
OPO
-
IAH
1 stop19h 00m
Turkish Airlines
Deal found 3/27$681
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/189:05 pm
IAH
-
LIS
1 stop20h 15m
Turkish Airlines
Wed 4/225:55 am
LIS
-
IAH
1 stop19h 15m
Turkish Airlines
Deal found 3/24$682
This Turkish Airlines deal was found by Cheapflights users on 3/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/69:05 pm
IAH
-
OPO
1 stop30h 40m
Turkish Airlines
Tue 4/2110:40 am
OPO
-
IAH
1 stop32h 05m
Turkish Airlines
Deal found 3/25$682
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:05 pm
IAH
-
LIS
1 stop36h 20m
Turkish Airlines
Thu 4/305:55 am
LIS
-
IAH
1 stop36h 50m
Turkish Airlines
Deal found 3/26$683
This SmartFares deal was found by Cheapflights users on 3/23. 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.
Sun 9/69:05 pm
IAH
-
OPO
1 stop30h 35m
Turkish Airlines
Thu 9/246:10 am
OPO
-
IAH
1 stop19h 00m
Turkish Airlines
Deal found 3/23$687

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 March 28, 2026.

Round-trip from

$661
(FlightHub)

One-way from

$342
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$783
From Houston to Portugal
Search Deals
One-way flight from Houston to Portugal
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($268 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 28, 2026.
Use the filters below to find and compare flights from Houston to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 9/15

9:05 pm-11:30 pm

1 stop20h 25m

Porto

Thu 9/24

6:10 am-7:10 pm

1 stop19h 00m

$681

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Tue 4/21

5:23 pm-6:45 pm

2 stops19h 22m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-11:09 pm

2 stops24h 09m

$723
Quickest round-trip

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 4/13

6:46 pm-6:45 pm

2 stops17h 59m

Lisbon Humberto Delgado

Thu 4/30

5:00 am-1:20 pm

1 stop14h 20m

$734

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Sun 4/19

1:31 pm-2:55 pm

2 stops19h 24m

Lisbon Humberto Delgado

Thu 4/30

11:55 am-11:07 pm

2 stops17h 12m

$739

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Tue 4/14

1:31 pm-2:55 pm

2 stops19h 24m

Lisbon Humberto Delgado

Tue 4/28

11:55 am-11:09 pm

2 stops17h 14m

$739

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 4/13

4:30 pm-10:45 pm

1 stop24h 15m

Lisbon Humberto Delgado

Fri 5/1

11:25 am-7:59 pm

1 stop14h 34m

$742

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Mon 4/13

1:31 pm-2:55 pm

2 stops19h 24m

Lisbon Humberto Delgado

Wed 4/29

5:35 am-11:07 pm

2 stops23h 32m

$746

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/22

9:00 pm-5:55 pm

1 stop14h 55m

Lisbon Humberto Delgado

Mon 5/4

7:10 am-1:20 pm

1 stop36h 10m

$748

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 4/23

3:50 pm-11:15 am

1 stop13h 25m

Lisbon Humberto Delgado

Tue 5/5

9:50 am-11:59 pm

2 stops20h 09m

$772

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 4/19

3:50 pm-3:25 pm

1 stop17h 35m

Porto

Wed 4/29

5:55 am-5:51 pm

2 stops17h 56m

$776

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 60 resultsSorted by cheapest first
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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, April is the cheapest month in which you can book a flight from Houston to Portugal (average of $432). Flying from Houston to Portugal in June is currently the most expensive (average of $1,079). 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 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 March 28, 2026.
Get a feel of what it's like to fly with Delta,KLM, andAir France 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
8,359 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

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
8,359 reviews
Delta
7.9
Good
8,359 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

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.
KLM
7.8
Good
1,477 reviews
Delta
7.9
Good
8,359 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

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
1,555 reviews
Delta
7.9
Good
8,359 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

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
9,507 reviews
Delta
7.9
Good
8,359 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

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
7,830 reviews
Delta
7.9
Good
8,359 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

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 $723, Turkish Airlines can have you in Portugal from Houston in 19h 22m. There are 4777 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, April is the cheapest month in which you can book a flight from Houston to Portugal (average of $432). Flying from Houston to Portugal in June is currently the most expensive (average of $1,079). 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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Top 8 airlines flying from Houston to Portugal

Discover the top 8 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 March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$466Average$866FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$476Average$931FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$540Average$860FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$561Average$1,065FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$583Average$983FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$621Average$744FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$646Average$973FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$831Average$1,404FlexibilityNo cancel feeOn-time76%

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