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$294+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$713
(KLM)

One-way from

$440
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$965
From Portugal to Houston
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One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($179 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Wed 11/129:05 amLIS - IAH
2 stops34h 18mMultiple Airlines
Mon 11/175:00 amIAH - LIS
1 stop18h 25mMultiple Airlines
Deal found 6/12$643
This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 11/125:00 amLIS - IAH
2 stops19h 28mDelta
Mon 11/1710:45 amIAH - LIS
2 stops18h 35mDelta
Deal found 6/12$712
This British Airways deal was found by Cheapflights users on 6/10. 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.
Wed 9/1711:05 amLIS - IAH
1 stop16h 24mBritish Airways
Tue 9/233:30 pmIAH - LIS
1 stop16h 55mBritish Airways
Deal found 6/10$718
This Finnair deal was found by Cheapflights users on 6/11. 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 10/64:30 pmLIS - IAH
2 stops31h 11mFinnair
Mon 10/209:00 pmIAH - LIS
1 stop20h 10mFinnair
Deal found 6/11$724
This Virgin Atlantic deal was found by Cheapflights users on 6/12. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:15 amLIS - HOU
2 stops16h 25mVirgin Atlantic
Mon 11/1710:05 amHOU - LIS
2 stops15h 55mVirgin Atlantic
Deal found 6/12$732
This American Airlines deal was found by Cheapflights users on 6/10. 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 10/67:15 amLIS - IAH
2 stops20h 16mAmerican Airlines
Mon 10/203:30 pmIAH - LIS
1 stop20h 25mAmerican Airlines
Deal found 6/10$746
This British Airways deal was found by Cheapflights users on 6/10. 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 10/67:15 amLIS - HOU
2 stops18h 54mBritish Airways
Mon 10/206:43 pmHOU - LIS
2 stops17h 12mBritish Airways
Deal found 6/10$811
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 9/195:05 amLIS - IAH
2 stops23h 21mUnited Airlines
Mon 9/2911:58 amIAH - LIS
2 stops14h 22mUnited Airlines
Deal found 6/10$819
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 9/175:00 amLIS - HOU
2 stops22h 40mDelta
Tue 9/236:00 amHOU - LIS
2 stops20h 00mDelta
Deal found 6/10$833
This Air France deal was found by Cheapflights users on 6/10. 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.
Sat 6/215:40 amLIS - IAH
2 stops17h 15mAir France
Mon 7/73:50 pmIAH - LIS
1 stop24h 35mAir France
Deal found 6/10$843
This KLM deal was found by Cheapflights users on 6/11. 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.
Wed 6/117:30 pmLIS - IAH
2 stops25h 24mKLM
Sun 6/153:30 pmIAH - LIS
1 stop13h 25mKLM
Deal found 6/11$958
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Tue 6/104:45 pmLIS - IAH
1 stop25h 55mTurkish Airlines
Sat 6/149:00 pmIAH - LIS
1 stop20h 35mTurkish Airlines
Deal found 6/10$967

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 June 12, 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

Wed 11/12

9:05 am-1:23 pm

2 stops34h 18m

Houston George Bush Intcntl

Mon 11/17

5:00 am-5:25 am

1 stop18h 25m

$643

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 11/12

5:00 am-6:28 pm

2 stops19h 28m

Houston George Bush Intcntl

Mon 11/17

10:45 am-11:20 am

2 stops18h 35m

$712

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 9/17

11:05 am-9:29 pm

1 stop16h 24m

Houston George Bush Intcntl

Tue 9/23

3:30 pm-2:25 pm

1 stop16h 55m

$718

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 10/6

4:30 pm-5:41 pm

2 stops31h 11m

Houston George Bush Intcntl

Mon 10/20

9:00 pm-11:10 pm

1 stop20h 10m

$724

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Wed 11/12

11:15 am-9:40 pm

2 stops16h 25m

Houston Hobby

Mon 11/17

10:05 am-8:00 am

2 stops15h 55m

$732

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 10/6

7:15 am-9:31 pm

2 stops20h 16m

Houston George Bush Intcntl

Mon 10/20

3:30 pm-5:55 pm

1 stop20h 25m

$746

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Mon 10/6

7:15 am-8:09 pm

2 stops18h 54m

Houston Hobby

Mon 10/20

6:43 pm-5:55 pm

2 stops17h 12m

$811

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 9/19

5:05 am-10:26 pm

2 stops23h 21m

Houston George Bush Intcntl

Mon 9/29

11:58 am-8:20 am

2 stops14h 22m

$819

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Wed 9/17

5:00 am-9:40 pm

2 stops22h 40m

Houston Hobby

Tue 9/23

6:00 am-8:00 am

2 stops20h 00m

$833

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 10/6

8:25 am-11:43 pm

2 stops21h 18m

Houston George Bush Intcntl

Mon 10/20

6:34 pm-4:05 pm

2 stops15h 31m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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, September is the cheapest month in which you can book a flight from Portugal to Houston (average of $230). Flying from Portugal to Houston in March is currently the most expensive (average of $332). 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.

Rainfall in Houston by month

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

In terms of precipitation, rainfall in Houston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston when rainfall is around 3.2 in.

Temperature in Houston by month

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

If weather is an important factor for your trip to Houston, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

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 June 12, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Portugal to Houston have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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 Portugal to Houston. 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 Portugal to Houston one-way?

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $684. British Airways flights start at $912 while deals on Iberia start at $918 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, September is the cheapest month in which you can book a flight from Portugal to Houston (average of $230). Flying from Portugal to Houston in March is currently the most expensive (average of $332). 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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Top 3 airlines flying from Portugal to Houston

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$682Average$874FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$767Average$838FlexibilityNo cancel feeOn-time69%

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