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$379+ Cheap flights from George Bush Intcntl (IAH) to Porto (OPO)

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — OPO
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to Porto

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Porto (OPO). 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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$772
(oojo)

One-way from

$379
(Kiwi.com)

Popular in

June

Cheapest in

March

Average price

$1,117
Provider with most accurate pricing for Houston George Bush Intcntl-Porto flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Porto flights.
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From Houston George Bush Intcntl to Porto
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One-way flight from Houston George Bush Intcntl to Porto
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Highest demand for flights based on searches. 17% potential increase in price ($222 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from George Bush Intcntl to Porto

Cheapest flights from George Bush Intcntl to Porto
Explore the most affordable flight options available from George Bush Intcntl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Air France deal was found by Cheapflights users on 4/29. 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.
Thu 11/64:10 pmIAH - OPO
1 stop12h 40mMultiple Airlines
Sun 11/94:10 pmOPO - IAH
1 stop27h 20mMultiple Airlines
Deal found 4/29$744
This Air Canada deal was found by Cheapflights users on 4/29. 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.
Thu 11/612:05 pmIAH - OPO
2 stops24h 35mAir Canada
Sun 11/96:00 amOPO - IAH
2 stops21h 14mAir Canada
Deal found 4/29$746
This oojo deal was found by Cheapflights users on 4/28. 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.
Tue 8/59:00 pmIAH - OPO
1 stop31h 05mTurkish Airlines
Thu 8/2111:05 amOPO - IAH
1 stop31h 35mTurkish Airlines
Deal found 4/28$772
This United Airlines deal was found by Cheapflights users on 4/28. 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 8/51:38 pmIAH - OPO
1 stop12h 07mUnited Airlines
Thu 8/2112:10 pmOPO - IAH
2 stops30h 16mUnited Airlines
Deal found 4/28$779
This KLM deal was found by Cheapflights users on 4/28. 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 10/75:50 pmIAH - OPO
2 stops15h 45mKLM
Thu 10/166:30 amOPO - IAH
1 stop36h 45mKLM
Deal found 4/28$824
This Priceline deal was found by Cheapflights users on 4/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:32 pmIAH - OPO
2 stops15h 23mIberia
Sun 8/2412:20 pmOPO - IAH
2 stops17h 56mIberia
Deal found 4/29$887
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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.
Mon 7/73:30 pmIAH - OPO
1 stop22h 20mBritish Airways
Mon 8/49:10 pmOPO - IAH
1 stop22h 30mBritish Airways
Deal found 4/28$1,024
This Justfly.com deal was found by Cheapflights users on 4/29. 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 6/311:49 amIAH - OPO
2 stops29h 51mTAP AIR PORTUGAL
Fri 6/66:05 pmOPO - IAH
1 stop20h 03mTAP AIR PORTUGAL
Deal found 4/29$1,146
This Gurufare deal was found by Cheapflights users on 4/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/153:35 pmIAH - OPO
1 stop13h 40mLufthansa
Tue 7/156:15 amOPO - IAH
1 stop16h 10mLufthansa
Deal found 4/28$1,187

Cheapflights Fare Finder

Customize your flight search to find flights from George Bush Intcntl to Porto 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 April 29, 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Porto that are best for you.

Fly from

George Bush Intcntl

Fly to

Porto

Route

Depart

Return

Price

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 8/5

9:00 pm-10:05 am

1 stop31h 05m

Porto

Thu 8/21

11:05 am-12:40 pm

1 stop31h 35m

$772

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 8/5

1:38 pm-7:45 am

1 stop12h 07m

Porto

Thu 8/21

12:10 pm-12:26 pm

2 stops30h 16m

$779

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 8/5

6:15 pm-9:20 am

2 stops33h 05m

Porto

Thu 8/21

12:10 pm-8:49 am

2 stops26h 39m

$800

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 10/7

5:50 pm-3:35 pm

2 stops15h 45m

Porto

Thu 10/16

6:30 am-1:15 pm

1 stop36h 45m

$824

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sat 5/17

8:00 am-7:15 pm

2 stops29h 15m

Porto

Fri 5/23

7:35 am-11:01 pm

2 stops21h 26m

$851

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Thu 8/14

6:32 pm-3:55 pm

2 stops15h 23m

Porto

Sun 8/24

12:20 pm-12:16 am

2 stops17h 56m

$887

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 7/7

3:30 pm-7:50 pm

1 stop22h 20m

Porto

Mon 8/4

9:10 pm-1:40 pm

1 stop22h 30m

$1,024

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 6/3

11:49 am-11:40 pm

2 stops29h 51m

Porto

Fri 6/6

6:05 pm-8:08 am

1 stop20h 03m

$1,146

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 6/15

3:35 pm-11:15 am

1 stop13h 40m

Porto

Tue 7/15

6:15 am-4:25 pm

1 stop16h 10m

$1,187

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Fri 8/15

8:46 pm-10:55 pm

3 stops44h 09m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 11 results
1
2

Compare providers for flights from George Bush Intcntl to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to Porto in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Houston George Bush Intcntl Airport-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from George Bush Intcntl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

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

Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Porto (average of $523). Flying from Houston George Bush Intcntl Airport to Porto in June is currently the most expensive (average of $1,071). 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 OPO?

Find hourly flight availability from George Bush Intcntl to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Houston George Bush Intcntl Airport to Porto in the afternoon. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight at noon.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated April 29, 2025.
Peruse reviews from past customers who have flown with KLM, United Airlines and Turkish Airlines from Houston to Porto to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews

Comfort

7.7

Food

7.2

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Comfort

7.7

Food

7.2

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,696 reviews
KLM
7.8
Good
1,333 reviews

Comfort

7.7

Food

7.2

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Turkish Airlines
7.3
Good
3,788 reviews
KLM
7.8
Good
1,333 reviews

Comfort

7.7

Food

7.2

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
TAP AIR PORTUGAL
7.1
Good
1,851 reviews
KLM
7.8
Good
1,333 reviews

Comfort

7.7

Food

7.2

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air Canada
7.0
Good
9,242 reviews
KLM
7.8
Good
1,333 reviews

Comfort

7.7

Food

7.2

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Houston George Bush Intcntl?

    Most people fly into Porto (OPO) if they book a flight to Porto from Houston George Bush Intcntl. On average, Porto has 0 inbound flights from Houston George Bush Intcntl per day from 4 airlines. Porto is conveniently located just 6.8 mi from Porto’s city center.

  • What are the cheapest airlines flying from Houston George Bush Intcntl Airport to Porto round-trip?

    According to our current data, Turkish Airlines ($772), United Airlines ($779), and Air Canada ($800) offers the cheapest pricing from Houston George Bush Intcntl Airport to Porto. You may be able to fly from Houston George Bush Intcntl Airport to Porto for 28% less than the average price by searching for these airlines.

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

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

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

    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 Porto.

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

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Porto 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 Porto?

    Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Porto (average of $523). Flying from Houston George Bush Intcntl Airport to Porto in June is currently the most expensive (average of $1,071). 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

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for George Bush Intcntl to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from George Bush Intcntl to Porto

Discover the top 4 airlines that operate flights from George Bush Intcntl to Porto. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$494Average$1,026FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$629Average$1,005FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$679Average$1,404FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$690Average$1,173FlexibilityNo cancel feeOn-time69%

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