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$467+ Cheap flights from Galveston, TX 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — OPO
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Galveston to Porto

Keep the following information in mind while searching for Galveston to Porto flight deals. Data was last updated September 15, 2025.

Round-trip from

$640
(Ovago)

One-way from

$467
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$1,012
From Galveston to Porto
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One-way flight from Galveston to Porto
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Highest demand for flights based on searches. 2% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Galveston to Porto

Cheapest flights from Galveston to Porto
Explore the most affordable flight options available from Galveston to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Ovago deal was found by Cheapflights users on 9/15. 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.
Wed 11/1912:15 pmHOU - OPO
2 stops25h 45mBritish Airways
Wed 11/268:20 amOPO - HOU
2 stops17h 30mBritish Airways
Deal found 9/15$640
This Delta deal was found by Cheapflights users on 9/14. 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.
Tue 10/142:22 pmHOU - OPO
2 stops19h 13mDelta
Tue 10/216:15 amOPO - HOU
2 stops22h 45mDelta
Deal found 9/14$737
This KLM deal was found by Cheapflights users on 9/14. 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.
Wed 10/296:44 pmHOU - OPO
2 stops15h 41mKLM
Wed 11/56:00 amOPO - HOU
2 stops17h 48mKLM
Deal found 9/14$739
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:44 pmHOU - OPO
2 stops14h 41mDelta
Sun 11/95:00 amOPO - HOU
2 stops24h 46mDelta
Deal found 9/15$787
This KLM deal was found by Cheapflights users on 9/14. 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.
Fri 10/316:44 pmHOU - OPO
2 stops15h 41mKLM
Wed 11/56:00 amOPO - HOU
2 stops17h 48mKLM
Deal found 9/14$829
This KLM deal was found by Cheapflights users on 9/14. 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 10/146:44 pmHOU - OPO
2 stops14h 51mKLM
Tue 10/2111:35 amOPO - HOU
2 stops17h 25mKLM
Deal found 9/14$856
This Delta deal was found by Cheapflights users on 9/14. 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 11/126:53 pmHOU - OPO
2 stops14h 32mDelta
Sun 11/165:00 amOPO - HOU
2 stops18h 58mDelta
Deal found 9/14$1,102
This Delta deal was found by Cheapflights users on 9/14. 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 9/291:13 pmHOU - OPO
2 stops20h 17mDelta
Sat 10/116:05 amOPO - HOU
2 stops22h 55mDelta
Deal found 9/14$1,316
This FlightHub deal was found by Cheapflights users on 9/14. 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 11/1212:15 pmHOU - OPO
2 stops17h 30mIberia
Sun 11/238:20 amOPO - HOU
2 stops17h 30mIberia
Deal found 9/14$8,951

Cheapflights Fare Finder

 
Customize your flight search to find flights from Galveston 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 September 15, 2025.
Use the filters below to find and compare flights from Galveston to Porto that are best for you.

Fly from

Galveston

Fly to

Porto

Route

Depart

Return

Price

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Wed 11/19

12:15 pm-8:00 pm

2 stops25h 45m

Porto

Wed 11/26

8:20 am-7:50 pm

2 stops17h 30m

$640

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sat 2/14

10:18 am-7:40 am

2 stops15h 22m

Porto

Sat 2/21

8:40 pm-8:39 am

2 stops17h 59m

$678

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Tue 10/14

2:22 pm-3:35 pm

2 stops19h 13m

Porto

Tue 10/21

6:15 am-11:00 pm

2 stops22h 45m

$737

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Wed 10/29

6:44 pm-3:25 pm

2 stops15h 41m

Porto

Wed 11/5

6:00 am-5:48 pm

2 stops17h 48m

$739

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sun 2/15

10:05 am-10:30 am

2 stops18h 25m

Porto

Mon 2/23

6:30 am-9:32 am

2 stops33h 02m

$751

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Thu 11/6

6:44 pm-3:25 pm

2 stops14h 41m

Porto

Sun 11/9

5:00 am-11:46 pm

2 stops24h 46m

$787

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Mon 2/16

1:00 pm-10:15 am

2 stops15h 15m

Porto

Mon 2/23

6:30 am-9:32 am

2 stops33h 02m

$791

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sun 2/15

10:05 am-10:30 am

2 stops18h 25m

Porto

Sun 2/22

6:30 am-9:46 pm

2 stops21h 16m

$791

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Tue 3/3

10:18 am-7:40 am

2 stops15h 22m

Porto

Sat 3/14

8:40 pm-9:23 am

2 stops17h 43m

$837

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Mon 2/16

1:00 pm-10:15 am

2 stops15h 15m

Porto

Sun 2/22

6:30 am-9:46 pm

2 stops21h 16m

$855

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 16 results
1
2

Best time to book a flight from Galveston to Porto

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

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

Currently, January is the cheapest month in which you can book a flight from Galveston to Porto (average of $523). Flying from Galveston to Porto in June is currently the most expensive (average of $1,027). 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 G4L to OPO?

Find hourly flight availability from Galveston 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Galveston to Porto as you normally would.

How much does it cost to fly round-trip from Galveston to Porto?

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 September 15, 2025.
Get a feel of what it's like to fly with KLM and United Airlines from Galveston to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,385 reviews

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.2

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.2

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
United Airlines
7.4
Good
8,929 reviews
KLM
7.8
Good
1,385 reviews

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.2

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Related info for your journey

Find useful and relevant information for your journey from Galveston 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 Galveston?

    Porto (OPO) is the airport you will fly into if you book a flight from Galveston to Porto. You should not have trouble finding flights to Porto from Galveston; the airport handles an average of 0 inbound flights from Galveston per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Porto airport from Galveston. It is only a 6.8 mi journey from Porto (OPO) to Porto’s city center.

  • How long is the flight from Galveston to Porto?

    Departing from Galveston to Porto will take you 15h 22m. Galveston and Porto are separated by a distance of 4736 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Galveston 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 Galveston to Porto?

    Currently, January is the cheapest month in which you can book a flight from Galveston to Porto (average of $523). Flying from Galveston to Porto in June is currently the most expensive (average of $1,027). 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 Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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Top 3 airlines flying from Galveston to Porto

Discover the top 3 airlines that operate flights from Galveston 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$629Average$1,158FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$662Average$1,066FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$679Average$1,404FlexibilityNo cancel feeOn-time76%

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