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$271+ Cheap flights from George Bush Intcntl (IAH) to Portugal

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to Portugal

Keep the following information in mind while searching for George Bush Intcntl to Portugal flight deals. Data was last updated February 20, 2025.

Round-trip from

$572
(Iberia)

One-way from

$286
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$617
From Houston George Bush Intcntl to Portugal
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One-way flight from Houston George Bush Intcntl to Portugal
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Highest demand for flights based on searches. 9% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from George Bush Intcntl to Portugal

Cheapest flights from George Bush Intcntl to Portugal
Explore the most affordable flight options available from George Bush Intcntl to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Iberia deal was found by Cheapflights users on 2/19. 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 3/313:30 pmIAH - LIS
1 stop18h 10mMultiple Airlines
Wed 4/96:35 amLIS - IAH
2 stops23h 08mMultiple Airlines
Deal found 2/19$572
This CheapOair deal was found by Cheapflights users on 2/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/313:30 pmIAH - LIS
1 stop15h 15mBritish Airways
Wed 4/97:20 amLIS - IAH
1 stop17h 55mBritish Airways
Deal found 2/20$583
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 4/27:30 amIAH - LIS
2 stops19h 50mUnited Airlines
Tue 4/811:25 amLIS - IAH
2 stops32h 13mUnited Airlines
Deal found 2/19$585
This KLM deal was found by Cheapflights users on 2/18. 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.
Thu 3/204:25 pmIAH - LIS
1 stop13h 10mKLM
Thu 3/2711:25 amLIS - IAH
1 stop32h 10mKLM
Deal found 2/18$589
This Delta deal was found by Cheapflights users on 2/19. 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.
Sun 3/164:25 pmIAH - LIS
1 stop17h 10mDelta
Mon 3/3111:40 amLIS - IAH
2 stops31h 41mDelta
Deal found 2/19$594
This Justfly.com deal was found by Cheapflights users on 2/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/188:45 amIAH - LIS
1 stop19h 35mAir Canada
Thu 3/2710:55 amLIS - IAH
2 stops39h 19mAir Canada
Deal found 2/18$600
This Air France deal was found by Cheapflights users on 2/19. 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 3/215:10 pmIAH - LIS
1 stop19h 20mAir France
Fri 3/285:30 amLIS - IAH
1 stop14h 25mAir France
Deal found 2/19$602
This KLM deal was found by Cheapflights users on 2/18. 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.
Tue 3/184:25 pmIAH - OPO
1 stop13h 20mKLM
Thu 3/276:15 amOPO - IAH
1 stop37h 20mKLM
Deal found 2/18$631
This United Airlines deal was found by Cheapflights users on 2/19. 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 4/19:30 amIAH - OPO
2 stops18h 15mUnited Airlines
Tue 4/86:00 amOPO - IAH
2 stops20h 50mUnited Airlines
Deal found 2/19$641
This oojo deal was found by Cheapflights users on 2/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/99:00 pmIAH - LIS
1 stop36h 30mTurkish Airlines
Fri 4/184:30 pmLIS - IAH
1 stop32h 35mTurkish Airlines
Deal found 2/20$664
This Travelocity deal was found by Cheapflights users on 2/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1010:45 pmIAH - LIS
2 stops19h 40mIberia
Mon 3/178:45 pmLIS - IAH
2 stops32h 33mIberia
Deal found 2/20$674
This Gotogate deal was found by Cheapflights users on 2/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/258:45 amIAH - OPO
2 stops21h 30mMultiple Airlines
Sun 3/306:45 pmOPO - IAH
2 stops33h 16mMultiple Airlines
Deal found 2/19$680

Find flights from George Bush Intcntl to Portugal within your budget

Customize your flight search to find flights from George Bush Intcntl to Portugal 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 February 20, 2025.

Fly from

George Bush Intcntl

Fly to

Portugal

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 3/31

3:30 pm-3:40 pm

1 stop18h 10m

Lisbon Humberto Delgado

Wed 4/9

6:35 am-11:43 pm

2 stops23h 08m

$572

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 3/31

3:30 pm-12:45 pm

1 stop15h 15m

Lisbon Humberto Delgado

Wed 4/9

7:20 am-7:15 pm

1 stop17h 55m

$583

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/2

7:30 am-9:20 am

2 stops19h 50m

Lisbon Humberto Delgado

Tue 4/8

11:25 am-1:38 pm

2 stops32h 13m

$585

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 3/20

4:25 pm-10:35 am

1 stop13h 10m

Lisbon Humberto Delgado

Tue 3/25

11:25 am-2:35 pm

1 stop32h 10m

$589

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 3/18

8:45 am-9:20 am

1 stop19h 35m

Lisbon Humberto Delgado

Thu 3/27

10:55 am-9:14 pm

2 stops39h 19m

$600

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 3/21

5:10 pm-5:30 pm

1 stop19h 20m

Lisbon Humberto Delgado

Fri 3/28

5:30 am-2:55 pm

1 stop14h 25m

$602

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 3/24

4:25 pm-11:10 pm

1 stop25h 45m

Lisbon Humberto Delgado

Mon 3/31

3:35 pm-1:25 pm

1 stop27h 50m

$613

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 4/1

2:55 pm-9:45 am

1 stop12h 50m

Porto

Tue 4/8

6:00 am-6:00 pm

1 stop18h 00m

$627

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/18

4:25 pm-10:45 am

1 stop13h 20m

Porto

Wed 3/26

4:10 pm-2:35 pm

1 stop27h 25m

$631

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/9

9:00 pm-3:30 pm

1 stop36h 30m

Lisbon Humberto Delgado

Fri 4/18

4:30 pm-7:05 pm

1 stop32h 35m

$664

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 37 results
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Best time to book a flight from George Bush Intcntl to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from George Bush Intcntl 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.

Travel insights for flights from George Bush Intcntl to Portugal

Get recent, data-driven insights about flights from George Bush Intcntl to Portugal including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Portugal?

Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Portugal (average of $612). Flying from Houston George Bush Intcntl Airport to Portugal in June is currently the most expensive (average of $1,234). 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.

What is the cheapest time of day to fly from IAH to PT?

Find hourly flight availability from George Bush Intcntl to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from Houston George Bush Intcntl Airport to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from Houston to Portugal, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Portugal. 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 Houston George Bush Intcntl Airport to Portugal one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as $300. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Houston George Bush Intcntl Airport to Portugal for a low price.

  • What are the most popular routes from Houston George Bush Intcntl Airport to Portugal?

    The most popular flight routes from Houston George Bush Intcntl Airport to Portugal are Houston George Bush Intcntl - Lisbon Humberto Delgado, Houston George Bush Intcntl - Porto and Houston George Bush Intcntl - Funchal Madeira.

  • Can I find deals for flights from George Bush Intcntl to Portugal that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to Portugal.

  • Can I find deals for business class flights from George Bush Intcntl to Portugal?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Portugal 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 Houston George Bush Intcntl Airport to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Portugal (average of $612). Flying from Houston George Bush Intcntl Airport to Portugal in June is currently the most expensive (average of $1,234). 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.

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Alternative routes for George Bush Intcntl to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from George Bush Intcntl to Portugal

Discover the top 9 airlines that operate flights from George Bush Intcntl to Portugal. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$563Average$1,026FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$570Average$965FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$578Average$1,086FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$585Average$846FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$600Average$1,235FlexibilityNo cancel feeOn-time69%
KLMCheapest$644Average$1,003FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$655Average$725FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$679Average$1,555FlexibilityNo cancel feeOn-time76%
DeltaCheapest$715Average$1,043FlexibilityNo cancel feeOn-timeN/A
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