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$304+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to Portugal

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Portugal (PT0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$551
(United Airlines)

One-way from

$304
(Mytrip)
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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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 January 21, 2025.

This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/112:44 pmIAH - LIS
1 stop12h 26mUnited Airlines
Mon 3/1712:15 pmLIS - IAH
1 stop36h 05mUnited Airlines
Deal found 1/20$551
This Iberia deal was found by Cheapflights users on 1/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/29:45 pmIAH - LIS
1 stop14h 00mMultiple Airlines
Sun 2/97:45 amLIS - IAH
2 stops22h 08mMultiple Airlines
Deal found 1/20$557
This British Airways deal was found by Cheapflights users on 1/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/213:55 pmIAH - LIS
1 stop24h 30mBritish Airways
Thu 2/2710:55 amLIS - IAH
1 stop16h 35mBritish Airways
Deal found 1/20$558
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2110:18 amIAH - LIS
2 stops15h 37mAmerican Airlines
Thu 2/2712:30 pmLIS - IAH
2 stops17h 09mAmerican Airlines
Deal found 1/20$564
This Delta deal was found by Cheapflights users on 1/19. 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.
Mon 2/39:56 amIAH - LIS
2 stops16h 04mDelta
Mon 2/1010:00 amLIS - IAH
2 stops17h 14mDelta
Deal found 1/19$565
This United deal was found by Cheapflights users on 1/20. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/16:03 amIAH - OPO
1 stop21h 42mMultiple Airlines
Tue 4/88:40 amOPO - IAH
2 stops18h 34mMultiple Airlines
Deal found 1/20$579
This KLM deal was found by Cheapflights users on 1/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/183:58 pmIAH - LIS
2 stops16h 37mKLM
Mon 2/2411:15 amLIS - IAH
2 stops15h 59mKLM
Deal found 1/20$583
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/294:10 pmIAH - OPO
1 stop12h 40mDelta
Mon 2/106:20 amOPO - IAH
1 stop37h 15mDelta
Deal found 1/20$588
This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/268:45 amIAH - OPO
2 stops21h 30mAir Canada
Tue 4/88:40 amOPO - IAH
2 stops18h 34mAir Canada
Deal found 1/20$592
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/297:20 amIAH - LIS
2 stops20h 00mAir Canada
Sat 4/511:25 amLIS - IAH
2 stops27h 34mAir Canada
Deal found 1/20$595
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/115:30 pmIAH - OPO
1 stop16h 45mUnited Airlines
Mon 3/1712:25 pmOPO - IAH
1 stop35h 55mUnited Airlines
Deal found 1/20$610
This Iberia deal was found by Cheapflights users on 1/19. 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.
Fri 1/314:53 pmIAH - LIS
2 stops19h 12mIberia
Sun 2/912:30 pmLIS - IAH
2 stops17h 23mIberia
Deal found 1/19$621

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 January 21, 2025.

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Fly to

Any airport

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 3/11

2:44 pm-8:10 am

1 stop12h 26m

Lisbon Humberto Delgado

Mon 3/17

12:15 pm-7:20 pm

1 stop36h 05m

$551

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/30

3:55 pm-12:10 pm

1 stop14h 15m

Lisbon Humberto Delgado

Thu 2/13

6:30 am-7:37 pm

2 stops19h 07m

$557

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 2/21

3:55 pm-10:25 pm

1 stop24h 30m

Lisbon Humberto Delgado

Thu 2/27

10:55 am-9:30 pm

1 stop16h 35m

$558

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 2/21

9:27 am-7:55 am

2 stops16h 28m

Lisbon Humberto Delgado

Fri 2/28

12:30 pm-11:39 pm

2 stops17h 09m

$564

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 2/3

12:18 pm-8:00 am

2 stops13h 42m

Lisbon Humberto Delgado

Sun 2/9

10:00 am-11:59 pm

2 stops19h 59m

$565

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sat 2/15

4:10 pm-3:10 pm

1 stop17h 00m

Lisbon Humberto Delgado

Mon 2/24

11:25 am-1:35 pm

1 stop32h 10m

$566

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/30

12:16 pm-11:25 pm

2 stops29h 09m

Lisbon Humberto Delgado

Thu 2/13

12:30 pm-11:39 pm

2 stops17h 09m

$571

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 4/1

6:03 am-9:45 am

1 stop21h 42m

Porto

Tue 4/8

8:40 am-9:14 pm

2 stops18h 34m

$579

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 2/18

3:58 pm-2:35 pm

2 stops16h 37m

Lisbon Humberto Delgado

Mon 2/24

11:15 am-9:14 pm

2 stops15h 59m

$583

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 1/29

4:10 pm-10:50 am

1 stop12h 40m

Porto

Thu 2/6

6:15 am-1:35 pm

1 stop37h 20m

$588

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 30 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 $1,247). 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 January 21, 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 January 21, 2025.
Read through reviews of airlines operating flights from Houston to Portugal, such as British Airways, United Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

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

SWISS
7.5
Good
1,599 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
665 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

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

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

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 United Airlines, with whom users have recently found tickets for as low as $322. However, be on the lookout for offers from British Airways and Air France, 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 $1,247). 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$563Average$1,098FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$572Average$998FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$578Average$1,128FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$585Average$902FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$606Average$1,253FlexibilityNo cancel feeOn-time69%
KLMCheapest$644Average$1,013FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$656Average$795FlexibilityNo cancel feeOn-time77%
DeltaCheapest$715Average$1,063FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$725Average$1,550FlexibilityNo cancel feeOn-time76%
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