Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Houston George Bush Intcntl Airport to Porto from $208

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.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
United Airlines Logo
6:30 am - 9:30 am
IAH
-
OPO
21h 00m1 stop
United Airlines Logo
12:35 pm - 12:09 am
OPO
-
IAH
16h 34m2 stops
$436United Airlines
Mon, Feb 23 - Tue, Mar 10
United Airlines Logo
1:25 pm - 9:30 am
IAH
-
OPO
14h 05m1 stop
United Airlines Logo
6:00 am - 7:15 pm
OPO
-
IAH
18h 15m1 stop
$452United Airlines
Tue, Mar 3 - Thu, Mar 12
United Airlines Logo
8:30 am - 9:30 am
IAH
-
OPO
19h 00m2 stops
United Airlines Logo
6:00 am - 7:15 pm
OPO
-
IAH
18h 15m1 stop
$456United Airlines
Tue, Mar 3 - Thu, Mar 12
Iberia Logo
5:15 pm - 4:00 pm
IAH
-
OPO
16h 45m2 stops
Iberia Logo
8:40 pm - 11:57 pm
OPO
-
IAH
32h 17m2 stops
$461Iberia
Mon, Feb 23 - Tue, Mar 10
United Airlines Logo
1:25 pm - 9:30 am
IAH
-
OPO
14h 05m1 stop
United Airlines Logo
12:30 pm - 2:10 pm
OPO
-
IAH
31h 40m1 stop
$472United Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
1:25 pm - 9:30 am
IAH
-
OPO
14h 05m1 stop
United Airlines Logo
12:30 pm - 3:48 pm
OPO
-
IAH
33h 18m2 stops
$482United Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
6:25 am - 9:30 am
IAH
-
OPO
21h 05m2 stops
United Airlines Logo
12:30 pm - 3:48 pm
OPO
-
IAH
33h 18m2 stops
$487United Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
7:20 am - 9:45 am
IAH
-
OPO
20h 25m2 stops
United Airlines Logo
6:00 am - 6:00 pm
OPO
-
IAH
18h 00m1 stop
$498United Airlines
Mon, Apr 20 - Thu, Apr 23
United Airlines Logo
1:25 pm - 9:30 am
IAH
-
OPO
14h 05m1 stop
United Airlines Logo
6:00 am - 6:15 pm
OPO
-
IAH
18h 15m1 stop
$502United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
9:51 am - 9:30 am
IAH
-
OPO
17h 39m2 stops
United Airlines Logo
6:00 am - 6:15 pm
OPO
-
IAH
18h 15m1 stop
$506United Airlines
Wed, Feb 25 - Sun, Mar 1

Iberia flights from Houston George Bush Intcntl Airport to Porto

Our best Iberia deals on Houston George Bush Intcntl Airport to Porto flight tickets
Iberia
Mar 3
IAH8:53 amHouston George Bush Intcntl
16h 47m
2 stops
OPO7:40 amPorto
Mar 12
OPO8:20 amPorto
20h 33m
2 stops
IAH11:53 pmHouston George Bush Intcntl
$461
Iberia
Feb 22
IAH10:17 amHouston George Bush Intcntl
15h 23m
2 stops
OPO7:40 amPorto
Feb 28
OPO9:55 pmPorto
28h 15m
2 stops
IAH8:10 pmHouston George Bush Intcntl
$508
Iberia
May 3
IAH6:09 pmHouston George Bush Intcntl
19h 51m
2 stops
OPO8:00 pmPorto
May 13
OPO8:20 amPorto
21h 39m
2 stops
IAH11:59 pmHouston George Bush Intcntl
$533

KLM flights from Houston George Bush Intcntl Airport to Porto

Our best KLM deals on Houston George Bush Intcntl Airport to Porto flight tickets
KLM
Mar 10
IAH5:05 pmHouston George Bush Intcntl
12h 25m
1 stop
OPO10:30 amPorto
Mar 26
OPO11:20 amPorto
32h 35m
1 stop
IAH2:55 pmHouston George Bush Intcntl
$478
KLM
Mar 10
IAH12:40 pmHouston George Bush Intcntl
16h 50m
2 stops
OPO10:30 amPorto
Mar 26
OPO11:20 amPorto
32h 35m
1 stop
IAH2:55 pmHouston George Bush Intcntl
$495
KLM
Feb 22
IAH3:30 pmHouston George Bush Intcntl
13h 00m
1 stop
OPO10:30 amPorto
Feb 28
OPO4:10 pmPorto
27h 20m
1 stop
IAH1:30 pmHouston George Bush Intcntl
$529

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 January 11, 2026.
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

Mon 2/23

6:30 am-9:30 am

1 stop21h 00m

Porto

Tue 3/10

12:35 pm-12:09 am

2 stops16h 34m

$436

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/3

1:25 pm-9:30 am

1 stop14h 05m

Porto

Thu 3/12

6:00 am-7:15 pm

1 stop18h 15m

$452

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 3/3

8:30 am-9:30 am

2 stops19h 00m

Porto

Thu 3/12

6:00 am-7:15 pm

1 stop18h 15m

$456

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 2/23

5:15 pm-4:00 pm

2 stops16h 45m

Porto

Tue 3/10

8:40 pm-11:57 pm

2 stops32h 17m

$461

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 2/23

1:25 pm-9:30 am

1 stop14h 05m

Porto

Mon 3/2

12:30 pm-2:10 pm

1 stop31h 40m

$472

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 2/23

1:25 pm-9:30 am

1 stop14h 05m

Porto

Mon 3/2

12:30 pm-3:48 pm

2 stops33h 18m

$482

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 2/23

6:25 am-9:30 am

2 stops21h 05m

Porto

Mon 3/2

12:30 pm-3:48 pm

2 stops33h 18m

$487

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 4/20

7:20 am-9:45 am

2 stops20h 25m

Porto

Thu 4/23

6:00 am-6:00 pm

1 stop18h 00m

$498

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 2/25

1:25 pm-9:30 am

1 stop14h 05m

Porto

Sun 3/1

6:00 am-6:15 pm

1 stop18h 15m

$502

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 2/25

9:51 am-9:30 am

2 stops17h 39m

Porto

Sun 3/1

6:00 am-6:15 pm

1 stop18h 15m

$506

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 airline that flies from Houston George Bush Intcntl to Porto?

American Airlines, KLM, and United Airlines are the most popular carriers operating from Houston George Bush Intcntl to Porto

What airlines fly to Porto?

United Airlines, Lufthansa and KLM are the top three most popular airlines that fly to Porto from Houston George Bush Intcntl Airport according to our data. United Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 3 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time

14h 50m

Direct flights

None
The fastest flight from Houston George Bush Intcntl Airport to Porto takes 14h 50m
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 14h 50m, 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 $494Free CancellationRating
7.7
1,435 reviews
Search KLM flights
United AirlinesPriceFrom $642Free CancellationRating
7.4
9,145 reviews
Search United Airlines flights
LufthansaPriceFrom $679Free CancellationRating
6.8
7,710 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
Braga
Matosinhos
Aveiro
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Pinhao
Arcos de Valdevez
Ponte de Lima
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.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 2/10
Tue 2/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal