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$343+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Round-trip from

$733
(Delta)

One-way from

$343
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$815
From Portugal to Houston
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One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 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 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 April 29, 2025.

This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/305:00 amLIS - IAH
1 stop14h 15mDelta
Sun 6/153:50 pmIAH - LIS
1 stop20h 00mDelta
Deal found 4/28$733
This Iberia deal was found by Cheapflights users on 4/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1912:30 pmLIS - IAH
2 stops17h 29mMultiple Airlines
Sun 6/229:40 pmIAH - LIS
1 stop19h 25mMultiple Airlines
Deal found 4/28$737
This British Airways deal was found by Cheapflights users on 4/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2611:05 amLIS - IAH
1 stop16h 35mBritish Airways
Sat 9/61:39 pmIAH - LIS
2 stops20h 36mBritish Airways
Deal found 4/28$738
This KLM deal was found by Cheapflights users on 4/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:30 pmLIS - IAH
1 stop23h 45mKLM
Sat 9/63:30 pmIAH - LIS
1 stop21h 10mKLM
Deal found 4/28$739
This Air France deal was found by Cheapflights users on 4/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3012:10 pmLIS - IAH
2 stops17h 46mAir France
Sun 6/153:50 pmIAH - LIS
1 stop20h 00mAir France
Deal found 4/28$744
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 5/2211:05 amLIS - IAH
2 stops40h 35mAmerican Airlines
Sat 6/76:26 pmIAH - LIS
2 stops22h 44mAmerican Airlines
Deal found 4/29$749
This Finnair deal was found by Cheapflights users on 4/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:35 amLIS - IAH
2 stops41h 05mFinnair
Sat 9/62:35 pmIAH - LIS
2 stops26h 35mFinnair
Deal found 4/28$771
This British Airways deal was found by Cheapflights users on 4/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:30 pmLIS - HOU
2 stops31h 28mBritish Airways
Sat 9/66:41 pmHOU - LIS
2 stops17h 24mBritish Airways
Deal found 4/28$772
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/3012:55 pmLIS - IAH
1 stop28h 19mUnited Airlines
Sun 6/158:24 pmIAH - LIS
1 stop29h 56mUnited Airlines
Deal found 4/29$837
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:00 amLIS - HOU
2 stops22h 35mDelta
Sat 9/610:05 amHOU - LIS
2 stops22h 45mDelta
Deal found 4/28$855
This Lufthansa deal was found by Cheapflights users on 4/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/242:25 pmLIS - IAH
2 stops29h 10mLufthansa
Sat 9/65:05 pmIAH - LIS
2 stops22h 45mLufthansa
Deal found 4/28$870
This SWISS deal was found by Cheapflights users on 4/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/145:55 amLIS - IAH
2 stops20h 16mSWISS
Sun 5/1812:10 pmIAH - LIS
2 stops19h 35mSWISS
Deal found 4/28$925

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 April 29, 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

Fri 5/30

5:00 am-1:15 pm

1 stop14h 15m

Houston George Bush Intcntl

Sun 6/15

3:50 pm-5:50 pm

1 stop20h 00m

$733

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 6/19

12:30 pm-11:59 pm

2 stops17h 29m

Houston George Bush Intcntl

Sun 6/22

9:40 pm-11:05 pm

1 stop19h 25m

$737

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 8/26

11:05 am-9:40 pm

1 stop16h 35m

Houston George Bush Intcntl

Sat 9/6

9:00 pm-11:10 pm

1 stop20h 10m

$738

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 8/25

7:30 pm-1:15 pm

1 stop23h 45m

Houston George Bush Intcntl

Sat 9/6

3:30 pm-6:40 pm

1 stop21h 10m

$739

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 5/30

12:10 pm-11:56 pm

2 stops17h 46m

Houston George Bush Intcntl

Sun 6/15

3:50 pm-5:50 pm

1 stop20h 00m

$744

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 5/22

11:05 am-9:40 pm

2 stops40h 35m

Houston George Bush Intcntl

Sat 6/7

6:26 pm-11:10 pm

2 stops22h 44m

$749

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 8/26

6:35 am-5:40 pm

2 stops41h 05m

Houston George Bush Intcntl

Sat 9/6

2:35 pm-11:10 pm

2 stops26h 35m

$771

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Wed 8/27

12:30 pm-1:58 pm

2 stops31h 28m

Houston Hobby

Sat 9/6

6:41 pm-6:05 pm

2 stops17h 24m

$772

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 5/30

12:55 pm-11:14 am

1 stop28h 19m

Houston George Bush Intcntl

Sun 6/15

8:24 pm-8:20 am

1 stop29h 56m

$837

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Mon 8/25

5:00 am-9:35 pm

2 stops22h 35m

Houston Hobby

Sat 9/6

10:05 am-2:50 pm

2 stops22h 45m

$855

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 28 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 April 29, 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
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Aer Lingus, which is currently one of the cheapest options available, starting at $578. Turkish Airlines flights start at $682 while deals on Finnair start at $709 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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Alternative routes for Portugal to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 29, 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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