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$580+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — OPO
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$946
(Delta)

One-way from

$580
(Gurufare)

Popular in

December

Cheapest in

November

Average price

$1,318
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. 3% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/66:44 pmHOU - OPO
2 stops14h 41mDelta
dom. 11/911:15 amOPO - HOU
2 stops28h 08mDelta
Deal found 7/29$917
This KLM deal was found by Cheapflights users on 7/28. 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.
mar. 9/306:37 pmHOU - OPO
2 stops14h 58mKLM
mié. 10/1511:35 amOPO - HOU
2 stops17h 25mKLM
Deal found 7/28$1,037
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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.
lun. 9/292:33 pmHOU - OPO
2 stops15h 07mBritish Airways
sáb. 10/118:15 amOPO - HOU
2 stops19h 59mBritish Airways
Deal found 7/30$1,254
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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.
lun. 9/296:41 pmHOU - OPO
2 stops15h 14mIberia
sáb. 10/118:15 amOPO - HOU
2 stops17h 54mIberia
Deal found 7/31$1,368
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1212:15 pmHOU - OPO
2 stops17h 30mAmerican Airlines
dom. 11/168:20 amOPO - HOU
2 stops17h 30mAmerican Airlines
Deal found 7/29$1,723

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 julio 31, 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

mar. 9/30

6:37 pm-3:35 pm

2 stops14h 58m

Porto

mié. 10/15

11:35 am-11:00 pm

2 stops17h 25m

$1,037

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

mié. 9/3

1:05 pm-10:40 am

2 stops15h 35m

Porto

mié. 9/10

6:15 am-10:31 pm

2 stops22h 16m

$1,121

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

lun. 9/29

2:33 pm-11:40 am

2 stops15h 07m

Porto

sáb. 10/11

8:15 am-10:14 pm

2 stops19h 59m

$1,254

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

lun. 9/29

6:41 pm-3:55 pm

2 stops15h 14m

Porto

sáb. 10/11

8:15 am-8:09 pm

2 stops17h 54m

$1,368

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

dom. 10/12

6:11 pm-11:40 am

2 stops35h 29m

$580

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

dom. 10/12

4:41 pm-3:55 pm

2 stops17h 14m

$596

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

lun. 9/22

1:13 pm-3:30 pm

2 stops20h 17m

$602

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

jue. 8/28

6:00 am-9:10 am

3 stops21h 10m

$671

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 $1,033). 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 julio 31, 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.

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 julio 31, 2025.
Get a feel of what it's like to fly with Delta, KLM, and American 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.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Iberia
7.0
Good
2,859 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.6
Okay
7,222 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from Galveston to Porto one-way?

    The cheapest airlines for a one-way flight from Galveston to Porto are British Airways ($580), American Airlines ($596), and Delta ($602).

  • 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 $1,033). 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
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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$629Average$1,128FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$673Average$1,043FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$679Average$1,404FlexibilityNo cancel feeOn-time76%

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