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Portugal

$260+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$600
(United Airlines)

One-way from

$260
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$916
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. 20% potential increase in price ($214 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 16, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:00 amIAH - OPO
2 stops23h 00mMultiple Airlines
Tue 10/217:35 amOPO - IAH
2 stops20h 39mMultiple Airlines
Deal found 9/14$615
This United deal was found by Cheapflights users on 9/15. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:34 amIAH - OPO
1 stop17h 56mMultiple Airlines
Wed 11/264:15 pmOPO - IAH
1 stop28h 20mMultiple Airlines
Deal found 9/15$619
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:00 pmIAH - LIS
1 stop36h 30mTurkish Airlines
Fri 10/2411:00 amLIS - IAH
1 stop38h 05mTurkish Airlines
Deal found 9/16$620
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:20 amIAH - LIS
1 stop21h 45mMultiple Airlines
Tue 10/215:55 amLIS - IAH
2 stops20h 19mMultiple Airlines
Deal found 9/15$623
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:50 pmIAH - FNC
1 stop16h 25mBritish Airways
Wed 11/123:55 pmFNC - IAH
1 stop28h 10mBritish Airways
Deal found 9/15$627
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:55 amIAH - OPO
2 stops15h 45mMultiple Airlines
Thu 11/68:20 amOPO - IAH
2 stops21h 12mMultiple Airlines
Deal found 9/15$628
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:25 pmIAH - LIS
1 stop18h 50mTurkish Airlines
Tue 10/75:55 amLIS - IAH
1 stop19h 10mTurkish Airlines
Deal found 9/15$629
This Finnair deal was found by Cheapflights users on 9/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:24 pmIAH - LIS
2 stops19h 01mFinnair
Mon 12/14:10 pmLIS - IAH
2 stops33h 12mFinnair
Deal found 9/15$633
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/82:23 pmIAH - OPO
2 stops35h 17mIberia
Sun 11/168:20 amOPO - IAH
2 stops21h 12mIberia
Deal found 9/15$634
This Air France deal was found by Cheapflights users on 9/14. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/133:50 pmIAH - LIS
1 stop17h 00mAir France
Mon 10/206:50 pmLIS - IAH
1 stop24h 45mAir France
Deal found 9/14$636
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:50 amIAH - LIS
2 stops21h 00mAir Canada
Sun 11/235:00 amLIS - IAH
2 stops22h 44mAir Canada
Deal found 9/15$637
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:45 pmIAH - LIS
1 stop32h 20mBritish Airways
Mon 12/13:50 pmLIS - IAH
1 stop28h 15mBritish Airways
Deal found 9/15$638

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 September 16, 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

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 3/15

2:30 pm-9:30 am

1 stop14h 00m

Porto

Thu 4/2

6:00 am-6:00 pm

1 stop18h 00m

$600

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 3/15

2:30 pm-9:30 am

1 stop14h 00m

Porto

Tue 3/31

6:00 am-6:00 pm

1 stop18h 00m

$600

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 3/15

4:30 pm-9:30 am

1 stop12h 00m

Porto

Wed 4/1

6:00 am-12:20 am

2 stops24h 20m

$610

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 11/19

9:34 am-9:30 am

1 stop17h 56m

Porto

Wed 11/26

4:15 pm-2:35 pm

1 stop28h 20m

$619

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 3/15

4:30 pm-9:30 am

1 stop12h 00m

Porto

Mon 3/30

12:00 pm-6:00 pm

1 stop36h 00m

$619

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 10/21

10:00 am-8:00 am

1 stop16h 00m

Lisbon Humberto Delgado

Tue 10/28

5:30 am-2:55 pm

1 stop14h 25m

$622

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Mon 10/27

4:50 pm-2:15 pm

1 stop16h 25m

Funchal Madeira

Wed 11/12

3:55 pm-2:05 pm

1 stop28h 10m

$627

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Sun 2/8

3:50 pm-4:05 pm

1 stop18h 15m

Funchal Madeira

Tue 2/17

3:05 pm-11:26 pm

2 stops38h 21m

$635

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 10/15

12:55 pm-2:50 pm

2 stops19h 55m

Lisbon Humberto Delgado

Fri 10/24

5:40 am-1:35 pm

1 stop13h 55m

$640

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Wed 11/19

12:15 pm-8:00 pm

2 stops25h 45m

Porto

Wed 11/26

8:20 am-7:50 pm

2 stops17h 30m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 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 $1,127). 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 September 16, 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.

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 September 16, 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
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.4
Good
1,468 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,363 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $600, United Airlines can have you in Portugal from Houston in 14h. There are 4726 mi between Houston and Portugal. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $453. Delta flights start at $453 while deals on Virgin Atlantic start at $453 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 $1,127). 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$549Average$809FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$563Average$908FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$576Average$1,079FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$578Average$937FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$585Average$836FlexibilityNo cancel feeOn-time70%
DeltaCheapest$615Average$869FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$629Average$1,081FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$637Average$736FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$679Average$1,404FlexibilityNo cancel feeOn-time76%

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