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$337+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$780
(Kiwi.com)

One-way from

$337
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,209
From Portugal to Houston
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One-way flight from Portugal to Houston
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Highest demand for flights based on searches. 16% potential increase in price ($177 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Fri 11/72:00 pmLIS - IAH
2 stops29h 40mMultiple Airlines
Tue 11/115:30 amIAH - LIS
1 stop17h 55mMultiple Airlines
Deal found 7/3$780
This Booking.com deal was found by Cheapflights users on 7/1. 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 8/2511:05 amLIS - IAH
1 stop16h 35mBritish Airways
Sun 9/79:40 pmIAH - LIS
1 stop14h 15mBritish Airways
Deal found 7/1$804
This American Airlines deal was found by Cheapflights users on 7/3. 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 8/2511:05 amLIS - IAH
1 stop16h 35mAmerican Airlines
Mon 9/86:39 pmIAH - LIS
2 stops22h 31mAmerican Airlines
Deal found 7/3$809
This Expedia deal was found by Cheapflights users on 7/3. 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.
Fri 11/77:05 amLIS - HOU
2 stops19h 01mBritish Airways
Tue 11/114:25 pmHOU - LIS
2 stops16h 20mBritish Airways
Deal found 7/3$818
This Delta deal was found by Cheapflights users on 7/1. 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 - IAH
2 stops21h 00mDelta
Sun 9/74:00 pmIAH - LIS
2 stops19h 50mDelta
Deal found 7/1$857
This Finnair deal was found by Cheapflights users on 7/2. 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 8/254:30 pmLIS - IAH
2 stops31h 26mFinnair
Mon 9/82:27 pmIAH - LIS
2 stops26h 58mFinnair
Deal found 7/2$858
This Delta deal was found by Cheapflights users on 7/2. 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 stops23h 34mDelta
Mon 9/81:05 pmHOU - LIS
2 stops22h 45mDelta
Deal found 7/2$860
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 9/165:05 amLIS - IAH
1 stop18h 45mUnited Airlines
Sat 9/206:50 pmIAH - LIS
2 stops32h 30mUnited Airlines
Deal found 7/2$932
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/165:05 amLIS - IAH
2 stops18h 04mLufthansa
Sat 9/206:50 pmIAH - LIS
2 stops22h 40mLufthansa
Deal found 7/2$956
This Expedia deal was found by Cheapflights users on 7/1. 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 8/76:35 amLIS - IAH
2 stops19h 35mIberia
Sun 8/106:29 pmIAH - LIS
2 stops22h 56mIberia
Deal found 7/1$1,012
This lol.travel deal was found by Cheapflights users on 7/1. 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.
Mon 7/77:30 pmLIS - IAH
1 stop23h 45mKLM
Sun 7/203:30 pmIAH - LIS
1 stop21h 10mKLM
Deal found 7/1$1,063
This Iberia deal was found by Cheapflights users on 7/1. 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 8/76:35 amLIS - HOU
2 stops19h 20mIberia
Sun 8/106:30 pmHOU - LIS
2 stops15h 35mIberia
Deal found 7/1$1,068

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 July 3, 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 11/7

2:00 pm-1:40 pm

2 stops29h 40m

Houston George Bush Intcntl

Tue 11/11

5:30 am-5:25 am

1 stop17h 55m

$780

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 8/25

11:05 am-9:40 pm

1 stop16h 35m

Houston George Bush Intcntl

Sun 9/7

9:40 pm-5:55 pm

1 stop14h 15m

$804

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 8/25

11:05 am-9:40 pm

1 stop16h 35m

Houston George Bush Intcntl

Mon 9/8

6:39 pm-11:10 pm

2 stops22h 31m

$809

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Fri 11/7

7:05 am-8:06 pm

2 stops19h 01m

Houston Hobby

Tue 11/11

4:25 pm-2:45 pm

2 stops16h 20m

$818

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 8/25

5:00 am-8:00 pm

2 stops21h 00m

Houston George Bush Intcntl

Sun 9/7

4:00 pm-5:50 pm

2 stops19h 50m

$857

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 8/25

4:30 pm-5:56 pm

2 stops31h 26m

Houston George Bush Intcntl

Mon 9/8

2:27 pm-11:25 pm

2 stops26h 58m

$858

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Mon 8/25

5:00 am-10:34 pm

2 stops23h 34m

Houston Hobby

Mon 9/8

1:05 pm-5:50 pm

2 stops22h 45m

$860

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 9/16

5:05 am-5:50 pm

1 stop18h 45m

Houston George Bush Intcntl

Sat 9/20

6:50 pm-9:20 am

2 stops32h 30m

$932

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 9/16

5:05 am-5:09 pm

2 stops18h 04m

Houston George Bush Intcntl

Sat 9/20

6:50 pm-11:30 pm

2 stops22h 40m

$956

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 8/7

6:35 am-8:10 pm

2 stops19h 35m

Houston George Bush Intcntl

Sun 8/10

6:29 pm-11:25 pm

2 stops22h 56m

$1,012

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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.

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 July 3, 2025.
Peruse reviews from past customers who have flown with Delta, Finnair, and Air France from Portugal to Houston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

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
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

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
1,306 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

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
1,473 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

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
8,845 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

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!
Turkish Airlines
7.3
Good
3,895 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

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 $610. Iberia flights start at $736 while deals on British Airways start at $739 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

Browse thousands of different options on Cheapflights for your next trip

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$682Average$861FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$767Average$838FlexibilityNo cancel feeOn-time69%

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