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$334+ Cheap flights from Houston 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — OPO
Jan 28 — Feb 41
Tue 1/28
Tue 2/4
1 adult, Economy
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Cheap flight deals from Houston to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) 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 January 23, 2025.

Round-trip from

$575
(Kiwi.com)

One-way from

$334
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,069
From Houston to Porto
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One-way flight from Houston to Porto
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Highest demand for flights based on searches. 1% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Houston to Porto

Cheapest flights from Houston to Porto
Explore the most affordable flight options available from Houston to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/44:30 pmIAH - OPO
1 stop16h 45mLufthansa
Tue 3/116:00 amOPO - IAH
2 stops18h 03mLufthansa
Deal found 1/22$575
This United deal was found by Cheapflights users on 1/23. 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 1/23$579
This KLM deal was found by Cheapflights users on 1/23. 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.
Sun 2/24:10 pmIAH - OPO
1 stop12h 45mKLM
Mon 2/176:20 amOPO - IAH
1 stop37h 15mKLM
Deal found 1/23$591
This United Airlines deal was found by Cheapflights users on 1/22. 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 3/49:30 amIAH - OPO
2 stops23h 45mUnited Airlines
Tue 3/116:00 amOPO - IAH
2 stops32h 14mUnited Airlines
Deal found 1/22$592
This Booking.com deal was found by Cheapflights users on 1/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/29:45 pmIAH - OPO
2 stops16h 15mBritish Airways
Mon 2/175:30 pmOPO - IAH
1 stop26h 40mBritish Airways
Deal found 1/23$641
This American Airlines deal was found by Cheapflights users on 1/23. 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.
Sun 2/210:10 amIAH - OPO
2 stops15h 30mAmerican Airlines
Mon 2/1712:25 pmOPO - IAH
2 stops17h 33mAmerican Airlines
Deal found 1/23$646
This Delta deal was found by Cheapflights users on 1/23. 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 3/26:00 amHOU - OPO
2 stops22h 30mDelta
Mon 3/106:20 amOPO - HOU
2 stops21h 46mDelta
Deal found 1/23$659
This Air Canada deal was found by Cheapflights users on 1/23. 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.
Sun 3/97:20 amIAH - OPO
2 stops24h 30mAir Canada
Sun 3/166:00 amOPO - IAH
2 stops34h 12mAir Canada
Deal found 1/23$772
This FlightHub deal was found by Cheapflights users on 1/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/309:05 pmIAH - OPO
1 stop30h 40mTurkish Airlines
Tue 5/1310:45 amOPO - IAH
1 stop38h 25mTurkish Airlines
Deal found 1/23$773
This Ovago deal was found by Cheapflights users on 1/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/81:15 pmIAH - OPO
2 stops40h 00mScandinavian Airlines
Mon 9/2212:00 pmOPO - IAH
2 stops41h 54mScandinavian Airlines
Deal found 1/22$998
This American Airlines deal was found by Cheapflights users on 1/23. 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.
Sat 4/56:16 pmHOU - OPO
2 stops15h 39mAmerican Airlines
Wed 4/2312:20 pmOPO - HOU
2 stops17h 37mAmerican Airlines
Deal found 1/23$1,073
This Iberia deal was found by Cheapflights users on 1/23. 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 3/76:30 pmHOU - OPO
2 stops19h 30mIberia
Sat 3/158:20 amOPO - HOU
2 stops20h 33mIberia
Deal found 1/23$1,413

Find flights from Houston to Porto within your budget

Customize your flight search to find flights from Houston 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 January 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/4

4:30 pm-3:15 pm

1 stop16h 45m

Porto

Tue 3/11

6:00 am-7:03 pm

2 stops18h 03m

$575

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

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 2/2

4:10 pm-10:55 am

1 stop12h 45m

Porto

Mon 2/17

6:20 am-1:35 pm

1 stop37h 15m

$591

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/4

9:30 am-3:15 pm

2 stops23h 45m

Porto

Tue 3/11

6:00 am-9:14 am

2 stops32h 14m

$592

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 2/2

9:45 pm-8:00 pm

2 stops16h 15m

Porto

Mon 2/17

5:30 pm-2:10 pm

1 stop26h 40m

$641

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 2/2

10:10 am-7:40 am

2 stops15h 30m

Porto

Mon 2/17

12:25 pm-11:58 pm

2 stops17h 33m

$646

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sun 3/2

6:00 am-10:30 am

2 stops22h 30m

Porto

Mon 3/10

6:20 am-11:06 pm

2 stops21h 46m

$659

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 3/9

7:20 am-12:50 pm

2 stops24h 30m

Porto

Sun 3/16

6:00 am-11:12 am

2 stops34h 12m

$772

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 4/30

9:05 pm-9:45 am

1 stop30h 40m

Porto

Tue 5/13

10:45 am-7:10 pm

1 stop38h 25m

$773

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sat 4/5

2:40 pm-11:10 am

2 stops38h 30m

Porto

Wed 4/23

12:05 pm-9:09 pm

2 stops39h 04m

$1,055

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 18 results
1
2

Best time to book a flight from Houston to Porto

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

Get recent, data-driven insights about flights from Houston to Porto including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Houston to Porto?

Currently, January is the cheapest month in which you can book a flight from Houston to Porto (average of $523). Flying from Houston to Porto in June is currently the most expensive (average of $1,088). 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 HOU to OPO?

Find hourly flight availability from Houston 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 January 23, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 27% on flights from Houston to Porto by exploring options for tickets in the afternoon.

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 January 23, 2025.
To help decide which airline to fly from Houston to Porto, see what other customers have to say about American Airlines and Iberia. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,508 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

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
8,508 reviews
Delta
8.0
Very good
8,508 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

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
1,338 reviews
Delta
8.0
Very good
8,508 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

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
1,488 reviews
Delta
8.0
Very good
8,508 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

United Airlines
7.4
Good
8,970 reviews
Delta
8.0
Very good
8,508 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

Turkish Airlines
7.3
Good
3,926 reviews
Delta
8.0
Very good
8,508 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.6

Comfort

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 Houston 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?

    If you book a flight to Porto from Houston, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Houston to Porto per day from 4 different airlines.

  • What are the cheapest airlines flying from Houston to Porto round-trip?

    Flying on Lufthansa is currently your cheapest option to Porto, with prices starting at $575. Additional round-trip tickets that might be worth considering are offered by KLM and United Airlines, with the lowest prices starting at $591 and $592, respectively. These flights start at 52% lower than the current average price 3 months from now.

  • Can I find deals for flights from Houston to Porto that include hotel bookings?

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

  • How can I find direct flights from Houston to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to Porto.

  • Can I find deals for business class flights from Houston to Porto?

    Yes. Cheapflights offers flight deals from Houston 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 to Porto?

    Currently, January is the cheapest month in which you can book a flight from Houston to Porto (average of $523). Flying from Houston to Porto in June is currently the most expensive (average of $1,088). 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?

Book flights to Houston if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
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Top 4 airlines flying from Houston to Porto

Discover the top 4 airlines that operate flights from Houston 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 January 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$644Average$1,075FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$697Average$1,280FlexibilityNo cancel feeOn-time69%
DeltaCheapest$717Average$1,026FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$944Average$1,642FlexibilityNo cancel feeOn-time76%
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