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$361+ 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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
May 17 — May 241
Sat 5/17
Sat 5/24
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 May 12, 2025.

Round-trip from

$717
(Iberia)

One-way from

$361
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$909
From Portugal to Houston
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One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($154 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 May 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 May 12, 2025.

This Iberia deal was found by Cheapflights users on 5/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/97:15 amLIS - IAH
1 stop18h 00mBritish Airways
Mon 6/169:00 pmIAH - LIS
1 stop20h 10mBritish Airways
Deal found 5/12$717
This Iberia deal was found by Cheapflights users on 5/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/98:25 amLIS - IAH
2 stops21h 33mMultiple Airlines
Mon 6/169:00 pmIAH - LIS
1 stop20h 10mMultiple Airlines
Deal found 5/12$727
This Delta deal was found by Cheapflights users on 5/12. 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.
Mon 5/265:00 amLIS - IAH
1 stop14h 15mDelta
Sun 6/83:17 pmIAH - LIS
2 stops20h 33mDelta
Deal found 5/12$772
This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2912:55 pmLIS - IAH
1 stop28h 19mAir Canada
Wed 6/117:20 amIAH - LIS
1 stop21h 45mAir Canada
Deal found 5/11$857
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3010:25 amLIS - IAH
1 stop27h 43mUnited Airlines
Sat 6/148:24 pmIAH - LIS
1 stop29h 56mUnited Airlines
Deal found 5/11$878
This lol.travel deal was found by Cheapflights users on 5/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/295:05 amLIS - IAH
1 stop18h 45mLufthansa
Wed 6/116:20 pmIAH - LIS
1 stop21h 45mLufthansa
Deal found 5/11$888
This AirNGo deal was found by Cheapflights users on 5/11. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/295:55 amLIS - IAH
2 stops20h 16mSWISS
Wed 6/114:20 pmIAH - LIS
2 stops25h 00mSWISS
Deal found 5/11$899
This American Airlines deal was found by Cheapflights users on 5/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1211:05 amLIS - IAH
1 stop30h 37mAmerican Airlines
Fri 5/1612:51 pmIAH - LIS
1 stop14h 14mAmerican Airlines
Deal found 5/12$973
This American Airlines deal was found by Cheapflights users on 5/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2511:05 amLIS - HOU
2 stops18h 43mAmerican Airlines
Wed 7/210:13 amHOU - LIS
2 stops16h 52mAmerican Airlines
Deal found 5/11$1,085
This Virgin Atlantic deal was found by Cheapflights users on 5/11. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2910:00 amLIS - HOU
2 stops18h 21mVirgin Atlantic
Wed 6/1112:55 pmHOU - LIS
2 stops15h 50mVirgin Atlantic
Deal found 5/11$1,089
This Delta deal was found by Cheapflights users on 5/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/305:00 amLIS - HOU
2 stops23h 21mDelta
Sat 6/146:00 amHOU - LIS
2 stops23h 15mDelta
Deal found 5/11$1,115
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/268:25 amLIS - HOU
2 stops17h 19mBritish Airways
Sun 6/86:30 pmHOU - LIS
2 stops17h 25mBritish Airways
Deal found 5/12$1,242

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 May 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

Mon 6/9

7:15 am-7:15 pm

1 stop18h 00m

Houston George Bush Intcntl

Mon 6/16

9:00 pm-11:10 pm

1 stop20h 10m

$717

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 6/9

8:25 am-11:58 pm

2 stops21h 33m

Houston George Bush Intcntl

Mon 6/16

9:00 pm-11:10 pm

1 stop20h 10m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 5/26

5:00 am-1:15 pm

1 stop14h 15m

Houston George Bush Intcntl

Sun 6/8

3:17 pm-5:50 pm

2 stops20h 33m

$772

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 5/29

12:55 pm-11:14 am

1 stop28h 19m

Houston George Bush Intcntl

Wed 6/11

7:20 am-11:05 am

1 stop21h 45m

$857

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 5/30

10:25 am-8:08 am

1 stop27h 43m

Houston George Bush Intcntl

Sat 6/14

8:24 pm-8:20 am

1 stop29h 56m

$878

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 5/29

5:05 am-5:50 pm

1 stop18h 45m

Houston George Bush Intcntl

Wed 6/11

6:20 pm-10:05 pm

1 stop21h 45m

$888

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 5/29

5:55 am-8:11 pm

2 stops20h 16m

Houston George Bush Intcntl

Wed 6/11

4:20 pm-11:20 pm

2 stops25h 00m

$899

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Wed 6/25

11:05 am-11:48 pm

2 stops18h 43m

Houston Hobby

Wed 7/2

10:13 am-9:05 am

2 stops16h 52m

$1,085

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 5/29

10:00 am-10:21 pm

2 stops18h 21m

Houston Hobby

Wed 6/11

12:55 pm-10:45 am

2 stops15h 50m

$1,089

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Fri 5/30

5:00 am-10:21 pm

2 stops23h 21m

Houston Hobby

Sat 6/14

6:00 am-11:15 am

2 stops23h 15m

$1,115

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 22 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 May 12, 2025.
See what other customers who have flown with Delta, Finnair and SWISS 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

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
1,276 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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!
SWISS
7.5
Good
1,593 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
8,724 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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!
Virgin Atlantic
7.4
Good
643 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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 Aer Lingus, which is currently one of the cheapest options available, starting at $661. Turkish Airlines flights start at $681 while deals on British Airways 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 May 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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