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Cheap flights from Houston George Bush Intcntl Airport to Porto from $468

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston George Bush Intcntl Airport to Porto departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Houston George Bush Intcntl Airport to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:10 pm - 10:15 amIAH-OPO
16h 05m2 stops
Multiple Airlines Logo
7:45 pm - 9:39 pmOPO-IAH
31h 54m3 stops
$634Multiple Airlines
Find Deal
Thu, Feb 12 - Mon, Feb 16
Multiple Airlines Logo
7:10 am - 10:50 amIAH-OPO
21h 40m3 stops
Multiple Airlines Logo
9:55 pm - 9:39 pmOPO-IAH
28h 44m2 stops
$636Multiple Airlines
Find Deal
Wed, Mar 4 - Wed, Mar 11
Turkish Airlines Logo
10:05 pm - 9:55 amIAH-OPO
30h 50m1 stop
Turkish Airlines Logo
4:10 pm - 8:10 pmOPO-IAH
33h 00m1 stop
$642Turkish Airlines
Find Deal
Tue, Mar 10 - Thu, Mar 26
Turkish Airlines Logo
2:30 pm - 3:40 pmIAH-OPO
19h 10m1 stop
Turkish Airlines Logo
5:55 am - 7:15 pmOPO-IAH
19h 20m1 stop
$666Turkish Airlines
Find Deal
Wed, Apr 15 - Thu, Apr 30
Turkish Airlines Logo
9:05 pm - 9:55 amIAH-OPO
30h 50m1 stop
Turkish Airlines Logo
10:55 am - 7:10 pmOPO-IAH
38h 15m1 stop
$669Turkish Airlines
Find Deal
Thu, Feb 12 - Mon, Feb 16
Multiple Airlines Logo
12:10 pm - 1:15 pmIAH-OPO
19h 05m3 stops
Multiple Airlines Logo
7:45 pm - 9:39 pmOPO-IAH
31h 54m3 stops
$676Multiple Airlines
Find Deal
Thu, Feb 12 - Mon, Feb 16
United Airlines Logo
10:05 am - 9:30 amIAH-OPO
18h 25m2 stops
United Airlines Logo
6:00 am - 7:15 pmOPO-IAH
18h 15m1 stop
$677United Airlines
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Tue, Mar 10 - Thu, Mar 26
Multiple Airlines Logo
12:10 pm - 1:15 pmIAH-OPO
19h 05m2 stops
Multiple Airlines Logo
7:20 pm - 9:39 pmOPO-IAH
31h 19m2 stops
$679Multiple Airlines
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Wed, Mar 4 - Wed, Mar 11
KLM Logo
12:15 pm - 10:30 amIAH-OPO
16h 15m2 stops
KLM Logo
11:15 am - 1:30 pmOPO-IAH
32h 15m1 stop
$681KLM
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Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
12:10 pm - 1:15 pmIAH-OPO
19h 05m2 stops
Multiple Airlines Logo
6:00 am - 9:10 amOPO-IAH
33h 10m2 stops
$682Multiple Airlines
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Wed, Feb 18 - Wed, Feb 25

Lufthansa flights from Houston George Bush Intcntl Airport to Porto

Our best Lufthansa deals on Houston George Bush Intcntl Airport to Porto flight tickets
Lufthansa
Mar 10
IAH11:55 amHouston George Bush Intcntl
21h 50m
2 stops
OPO2:45 pmPorto
Mar 26
OPO6:00 amPorto
18h 15m
1 stop
IAH7:15 pmHouston George Bush Intcntl
$675
Find similar
Lufthansa
Mar 10
IAH11:55 amHouston George Bush Intcntl
18h 45m
2 stops
OPO11:40 amPorto
Mar 26
OPO6:00 amPorto
22h 59m
2 stops
IAH11:59 pmHouston George Bush Intcntl
$685
Find similar
Lufthansa
Mar 10
IAH11:55 amHouston George Bush Intcntl
18h 45m
2 stops
OPO11:40 amPorto
Mar 26
OPO6:00 amPorto
17h 59m
2 stops
IAH6:59 pmHouston George Bush Intcntl
$686
Find similar

SWISS flights from Houston George Bush Intcntl Airport to Porto

Our best SWISS deals on Houston George Bush Intcntl Airport to Porto flight tickets
SWISS
Mar 4
IAH7:05 pmHouston George Bush Intcntl
17h 30m
2 stops
OPO6:35 pmPorto
Mar 11
OPO7:20 pmPorto
29h 58m
2 stops
IAH8:18 pmHouston George Bush Intcntl
$680
Find similar
SWISS
Dec 6
IAH12:18 pmHouston George Bush Intcntl
24h 17m
2 stops
OPO6:35 pmPorto
Dec 13
OPO11:55 amPorto
32h 45m
2 stops
IAH2:40 pmHouston George Bush Intcntl
$884
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momondo Fare Finder

 
Customize your flight search to find flights from Houston George Bush Intcntl Airport 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, momondo users made 832,500 searches. Data last updated November 13, 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

Fly to

Route

Depart

Return

Price

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Thu 2/12

12:10 pm-10:15 am

2 stops16h 05m

Porto

Mon 2/16

7:45 pm-9:39 pm

3 stops31h 54m

$634

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 3/4

7:10 am-10:50 am

3 stops21h 40m

Porto

Wed 3/11

9:55 pm-9:39 pm

2 stops28h 44m

$636

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/10

10:05 pm-9:55 am

1 stop30h 50m

Porto

Thu 3/26

4:10 pm-8:10 pm

1 stop33h 00m

$642

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 4/15

2:30 pm-3:40 pm

1 stop19h 10m

Porto

Thu 4/30

5:55 am-7:15 pm

1 stop19h 20m

$666

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Thu 2/12

9:05 pm-9:55 am

1 stop30h 50m

Porto

Mon 2/16

10:55 am-7:10 pm

1 stop38h 15m

$669

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Thu 2/12

12:10 pm-1:15 pm

3 stops19h 05m

Porto

Mon 2/16

7:45 pm-9:39 pm

3 stops31h 54m

$676

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/10

10:05 am-9:30 am

2 stops18h 25m

Porto

Thu 3/26

6:00 am-7:15 pm

1 stop18h 15m

$677

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 3/4

12:10 pm-1:15 pm

2 stops19h 05m

Porto

Wed 3/11

7:20 pm-9:39 pm

2 stops31h 19m

$679

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 2/18

12:15 pm-10:30 am

2 stops16h 15m

Porto

Wed 2/25

11:15 am-1:30 pm

1 stop32h 15m

$681

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 2/18

12:10 pm-1:15 pm

2 stops19h 05m

Porto

Wed 2/25

6:00 am-9:10 am

2 stops33h 10m

$682

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from Houston George Bush Intcntl Airport to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Wednesday when prices can be found for as low as $887. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $1,432. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the afternoon is the cheapest time of day to fly from Houston George Bush Intcntl Airport to Porto when you can find flight prices for as low as $1,080. Flying to Porto in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,403 on average. Flights to Porto from Houston George Bush Intcntl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Houston George Bush Intcntl Airport to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Houston George Bush Intcntl Airport to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Houston George Bush Intcntl Airport to Porto (IAH to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston George Bush Intcntl Airport to Porto

Direct flights

None
There are no direct flights from Houston George Bush Intcntl Airport to Porto. There are no popular flight routes from Houston George Bush Intcntl Airport to Porto.
Search flight deals

  • How far is Houston George Bush Intcntl to Porto by plane?

    The straight-line distance from Houston George Bush Intcntl to Porto is 4730.3 mi. Flights usually cover this in 12h 25m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Houston George Bush Intcntl Airport to Porto Airport?

    Prices for flights from Houston George Bush Intcntl Airport to Porto Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Houston George Bush Intcntl Airport to Porto Airport?

  • How old do you have to be to fly from Houston George Bush Intcntl Airport to Porto Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Houston George Bush Intcntl Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Houston George Bush Intcntl Airport to Porto?

Best airlines flying from Houston George Bush Intcntl Airport to Porto

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to Porto with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $536Free CancellationRating
7.7
1,410 reviews
Search KLM flights
United AirlinesPriceFrom $673Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
LufthansaPriceFrom $679Free CancellationRating
6.8
7,570 reviews
Search Lufthansa flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Aveiro
Matosinhos
Braga
Lamego
Guimarães
Esposende
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from Houston.

Can I find flights from Houston to Porto with flexible booking policies on momondo?

All flight searches from Houston to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Houston to Porto?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto from Houston.

I’m not ready to book a flight from Houston to Porto right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Houston to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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