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$444+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
abr 1 — abr 81
ter 4/1
ter 4/8
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 março 27, 2025.

Round-trip from

$704
(Mytrip)

One-way from

$444
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$784
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. 8% potential increase in price ($83 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 March 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 março 27, 2025.

This Gotogate deal was found by Cheapflights users on 3/26. 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.
ter 12/211:37 amIAH - LIS
2 stops18h 28mMultiple Airlines
qui 2/266:30 amLIS - IAH
2 stops19h 30mMultiple Airlines
Deal found 3/26$656
This Gotogate deal was found by Cheapflights users on 3/26. 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.
ter 12/211:37 amIAH - LIS
2 stops18h 28mBritish Airways
qui 2/266:30 amLIS - IAH
2 stops19h 30mBritish Airways
Deal found 3/26$663
This American Airlines deal was found by Cheapflights users on 3/26. 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.
qui 11/2711:37 amIAH - LIS
2 stops15h 28mAmerican Airlines
qui 12/410:55 amLIS - IAH
2 stops17h 01mAmerican Airlines
Deal found 3/26$696
This United Airlines deal was found by Cheapflights users on 3/26. 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.
sáb 11/17:59 pmIAH - LIS
1 stop33h 16mUnited Airlines
sex 11/1411:00 amLIS - IAH
1 stop30h 12mUnited Airlines
Deal found 3/26$727
This oojo deal was found by Cheapflights users on 3/26. 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.
qua 11/199:20 pmIAH - LIS
1 stop31h 15mTurkish Airlines
qua 11/264:00 pmLIS - IAH
1 stop33h 25mTurkish Airlines
Deal found 3/26$728
This Air Canada deal was found by Cheapflights users on 3/26. 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.
ter 11/49:30 amIAH - LIS
1 stop17h 50mAir Canada
qui 11/1311:00 amLIS - IAH
2 stops30h 12mAir Canada
Deal found 3/26$733
This Delta deal was found by Cheapflights users on 3/26. 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.
qua 11/56:00 amIAH - LIS
2 stops21h 00mDelta
qua 11/1211:25 amLIS - IAH
1 stop32h 05mDelta
Deal found 3/26$740
This oojo deal was found by Cheapflights users on 3/26. 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.
ter 10/79:00 pmIAH - OPO
1 stop31h 05mTurkish Airlines
qui 10/164:50 pmOPO - IAH
1 stop25h 50mTurkish Airlines
Deal found 3/26$768
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 4/309:40 amIAH - OPO
3 stops39h 10mMultiple Airlines
dom 5/46:30 amOPO - IAH
3 stops34h 21mMultiple Airlines
Deal found 3/26$792
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 5/58:25 amIAH - FNC
3 stops42h 10mMultiple Airlines
ter 5/206:50 pmFNC - IAH
2 stops32h 59mMultiple Airlines
Deal found 3/26$832
This Air France deal was found by Cheapflights users on 3/26. 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.
sex 11/284:10 pmIAH - LIS
1 stop17h 00mAir France
qui 12/411:15 amLIS - IAH
2 stops18h 39mAir France
Deal found 3/26$855
This Finnair deal was found by Cheapflights users on 3/26. 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.
seg 11/249:45 pmIAH - LIS
1 stop32h 20mFinnair
sex 12/56:30 amLIS - IAH
2 stops41h 11mFinnair
Deal found 3/26$864

Cheapflights Fare Finder

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 março 27, 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Portugal that are best for you.

Fly from

George Bush Intcntl

Fly to

Portugal

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

ter 5/6

10:06 am-9:30 pm

3 stops29h 24m

Lisbon Humberto Delgado

seg 5/12

6:40 am-1:50 pm

3 stops37h 10m

$704

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

ter 9/16

9:00 pm-9:55 am

1 stop30h 55m

Lisbon Humberto Delgado

sex 9/26

11:10 am-7:05 pm

1 stop37h 55m

$732

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

dom 5/11

9:00 pm-3:50 pm

1 stop36h 50m

Porto

qui 5/22

11:05 am-12:40 pm

1 stop31h 35m

$788

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

qua 4/30

9:40 am-6:50 am

3 stops39h 10m

Porto

dom 5/4

6:30 am-10:51 am

3 stops34h 21m

$792

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

seg 5/5

8:25 am-8:35 am

3 stops42h 10m

Funchal Madeira

ter 5/20

6:50 pm-9:49 pm

2 stops32h 59m

$832

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

dom 4/27

3:25 pm-5:55 pm

1 stop20h 30m

Lisbon Humberto Delgado

sex 5/9

7:20 am-7:15 pm

1 stop17h 55m

$854

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

sex 8/15

9:00 pm-11:10 pm

1 stop20h 10m

Lisbon Humberto Delgado

dom 8/24

6:35 am-11:11 pm

2 stops22h 36m

$918

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

qua 5/7

7:30 am-7:35 am

2 stops18h 05m

Porto

dom 5/18

8:15 am-11:42 pm

2 stops21h 27m

$925

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

sex 8/15

4:00 pm-9:00 am

2 stops35h 00m

Lisbon Humberto Delgado

dom 8/24

8:15 pm-9:03 pm

2 stops30h 48m

$935

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

dom 4/27

6:25 am-10:45 am

2 stops22h 20m

Lisbon Humberto Delgado

ter 5/13

10:15 pm-9:03 pm

2 stops28h 48m

$1,023

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 38 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.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to Portugal

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 $1,213). 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 março 27, 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 março 27, 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
7,895 reviews

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
7,895 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
1,319 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
1,267 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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.
Austrian Airlines
7.5
Good
769 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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
1,569 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

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 Turkish Airlines, with whom users have recently found tickets for as low as $485. However, be on the lookout for offers from British Airways and United 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 $1,213). 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 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 março 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$494Average$1,006FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$563Average$984FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$570Average$956FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$586Average$870FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$593Average$1,255FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$595Average$1,126FlexibilityNo cancel feeOn-time71%
KLMCheapest$635Average$985FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$655Average$700FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$684Average$1,531FlexibilityNo cancel feeOn-time76%
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