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$478+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Jan 5 — Jan 121
Mon 1/5
Mon 1/12
1 adult, Economy
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Cheap 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 December 6, 2025.

This United Airlines deal was found by Cheapflights users on 12/4. 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 12/235:00 amLIS - IAH
2 stops25h 57mUnited Airlines
Sat 1/1011:00 amIAH - LIS
2 stops15h 10mUnited Airlines
Deal found 12/4$850
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/1910:15 amLIS - IAH
1 stop14h 55mUnited Airlines
Fri 1/91:35 pmIAH - LIS
1 stop12h 35mUnited Airlines
Deal found 12/4$867
This Air Canada deal was found by Cheapflights users on 12/4. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:20 amLIS - IAH
2 stops40h 19mAir Canada
Fri 1/911:55 amIAH - LIS
1 stop15h 25mAir Canada
Deal found 12/4$868
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/1911:55 amLIS - IAH
2 stops17h 17mUnited Airlines
Thu 1/81:35 pmIAH - LIS
1 stop12h 35mUnited Airlines
Deal found 12/4$871
This Finnair deal was found by Cheapflights users on 12/4. 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 12/2311:05 amLIS - IAH
1 stop17h 51mMultiple Airlines
Sat 1/106:02 amIAH - LIS
1 stop21h 03mMultiple Airlines
Deal found 12/4$885
This Air Canada deal was found by Cheapflights users on 12/4. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:20 amLIS - IAH
2 stops40h 19mMultiple Airlines
Thu 1/811:55 amIAH - LIS
2 stops15h 25mMultiple Airlines
Deal found 12/4$887
This Iberia deal was found by Cheapflights users on 12/5. 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.
Fri 12/58:20 amLIS - IAH
2 stops21h 15mMultiple Airlines
Tue 12/93:50 pmIAH - LIS
1 stop14h 15mMultiple Airlines
Deal found 12/5$964
This Delta deal was found by Cheapflights users on 12/5. 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 12/510:00 amLIS - HOU
2 stops18h 48mDelta
Tue 12/96:00 amHOU - LIS
2 stops23h 20mDelta
Deal found 12/5$1,000
This British Airways deal was found by Cheapflights users on 12/4. 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 12/237:05 amLIS - HOU
2 stops18h 45mBritish Airways
Sat 1/104:55 pmHOU - LIS
2 stops15h 55mBritish Airways
Deal found 12/4$1,041
This British Airways deal was found by Cheapflights users on 12/5. 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.
Sun 12/217:05 amLIS - HOU
2 stops18h 45mBritish Airways
Thu 12/254:17 pmHOU - LIS
2 stops16h 28mBritish Airways
Deal found 12/5$1,968

Find flight deals from Portugal to Houston

Keep the following information in mind while searching for Portugal to Houston flight deals. Data was last updated December 6, 2025.

Round-trip from

$601
(Kiwi.com)

One-way from

$478
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$929
From Portugal to Houston
Search Deals
One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 6, 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

Thu 1/22

5:55 am-5:10 pm

2 stops41h 15m

Houston George Bush Intcntl

Sat 2/7

7:27 pm-11:40 am

1 stop34h 13m

$601

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 1/12

11:35 am-3:19 pm

3 stops33h 44m

Houston George Bush Intcntl

Sun 1/25

11:38 am-8:25 pm

3 stops26h 47m

$703

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 12/23

5:00 am-12:57 am

2 stops25h 57m

Houston George Bush Intcntl

Sat 1/10

11:00 am-8:10 am

2 stops15h 10m

$850

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 1/23

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Sat 2/7

8:00 am-8:10 am

1 stop18h 10m

$851

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Sun 1/25

11:05 am-10:46 pm

2 stops17h 41m

Houston Hobby

Sat 2/7

12:49 pm-9:05 am

2 stops14h 16m

$861

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 1/22

5:00 am-10:33 pm

2 stops23h 33m

Houston Hobby

Sat 2/7

11:09 am-3:10 pm

2 stops22h 01m

$863

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 1/23

5:00 am-9:44 pm

2 stops22h 44m

Houston George Bush Intcntl

Sat 2/7

6:24 pm-9:20 am

1 stop32h 56m

$863

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 12/19

10:15 am-7:10 pm

1 stop14h 55m

Houston George Bush Intcntl

Fri 1/9

1:35 pm-8:10 am

1 stop12h 35m

$867

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 1/23

11:05 am-10:30 pm

1 stop17h 25m

Houston George Bush Intcntl

Sat 2/7

3:50 pm-12:10 pm

1 stop14h 20m

$870

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 1/23

7:05 am-9:22 pm

2 stops20h 17m

Houston George Bush Intcntl

Sat 2/7

6:16 pm-5:55 pm

2 stops17h 39m

$882

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 35 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, April is the cheapest month in which you can book a flight from Portugal to Houston (average of $583). Flying from Portugal to Houston in July is currently the most expensive (average of $1,000). 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 December 6, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines 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.
United Airlines
7.4
Good
9,065 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,065 reviews
United Airlines
7.4
Good
9,065 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,043 reviews
United Airlines
7.4
Good
9,065 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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.

  • How long is the flight from Portugal to Houston?

    Departing from Portugal to Houston will take you 17h 41m. The distance from Portugal to Houston is about 4777 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $612. Lufthansa flights start at $837 while deals on United Airlines start at $864 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, April is the cheapest month in which you can book a flight from Portugal to Houston (average of $583). Flying from Portugal to Houston in July is currently the most expensive (average of $1,000). 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 2 airlines flying from Portugal to Houston

Discover the top 2 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 December 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$794Average$851FlexibilityNo cancel feeOn-time69%

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