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$507+ 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
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This oojo deal was found by Cheapflights users on 12/17. 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.
Thu 12/2512:09 pmHOU - OPO
2 stops25h 51mIberia
Wed 12/318:20 amOPO - HOU
2 stops17h 25mIberia
Deal found 12/17$2,789

Find flight deals from Galveston to Porto

Keep the following information in mind while searching for Galveston to Porto flight deals. Data was last updated December 18, 2025.

Round-trip from

$698
(Delta)

One-way from

$507
(Air France)

Popular in

June

Cheapest in

November

Average price

$981
From Galveston to Porto
Search Deals
One-way flight from Galveston to Porto
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($372 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 18, 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

Tue 2/10

11:09 am-3:25 pm

2 stops22h 16m

Porto

Tue 2/24

5:00 am-10:28 pm

2 stops23h 28m

$698

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Tue 3/3

5:25 am-10:30 am

2 stops23h 05m

Porto

Sat 3/14

11:15 am-9:40 am

2 stops27h 25m

$803

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sat 1/31

10:35 am-7:40 am

2 stops15h 05m

Porto

Sat 2/7

8:40 pm-10:05 am

2 stops19h 25m

$852

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Fri 1/30

5:45 am-10:30 am

2 stops22h 45m

Porto

Fri 2/6

5:00 am-10:33 pm

2 stops23h 33m

$858

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Tue 3/3

10:15 am-7:40 am

2 stops15h 25m

Porto

Sat 3/14

8:40 pm-11:48 am

2 stops20h 08m

$903

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Fri 1/23

5:04 pm-3:25 pm

2 stops16h 21m

Porto

Mon 2/2

11:15 am-10:21 am

2 stops29h 06m

$949

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Thu 1/22

10:35 am-7:40 am

2 stops15h 05m

Porto

Mon 1/26

4:40 pm-10:05 am

2 stops23h 25m

$1,037

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sun 5/10

6:31 pm-4:00 pm

2 stops15h 29m

Porto

Sun 5/17

12:25 pm-11:41 pm

2 stops17h 16m

$1,109

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Thu 2/5

10:35 am-7:40 am

2 stops15h 05m

Porto

Mon 2/9

8:40 pm-10:05 am

2 stops19h 25m

$1,156

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Sun 5/3

6:31 pm-4:00 pm

2 stops15h 29m

Porto

Tue 6/2

12:25 pm-11:42 pm

2 stops17h 17m

$1,299

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 15 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, November is the cheapest month in which you can book a flight from Galveston to Porto (average of $562). Flying from Galveston to Porto in February is currently the most expensive (average of $1,419). 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 December 18, 2025.

It’s typically best to fly out from Galveston to Porto in the afternoon. Doing so could potentially save you 24% on the flight price compared to flying at noon, which is usually more expensive.

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 December 18, 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
7.7
Good
1,428 reviews

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,428 reviews
KLM
7.7
Good
1,428 reviews

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,095 reviews
KLM
7.7
Good
1,428 reviews

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 05m. 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, November is the cheapest month in which you can book a flight from Galveston to Porto (average of $562). Flying from Galveston to Porto in February is currently the most expensive (average of $1,419). 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
Vila Nova de Gaia

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$536Average$868FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$662Average$1,014FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$679Average$1,336FlexibilityNo cancel feeOn-time76%

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