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Cheap flights from Houston George Bush Intcntl Airport to Porto from $389

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 8/5. 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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0 bags

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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.
Turkish Airlines Logo
9:05 pm - 10:00 am
IAH
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
10:45 am - 12:45 pm
OPO
-
IAH
32h 00m
1 stop
$720Turkish Airlines
Tue, Apr 28 - Sun, May 3
Turkish Airlines Logo
9:05 pm - 10:00 am
IAH
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
6:10 am - 7:10 pm
OPO
-
IAH
19h 00m
1 stop
$738Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 11:30 pm
IAH
-
OPO
20h 25m
1 stop
Turkish Airlines Logo
10:45 am - 7:10 pm
OPO
-
IAH
38h 25m
1 stop
$746Turkish Airlines
Tue, Sep 29 - Sat, Oct 10
Turkish Airlines Logo
9:05 pm - 11:30 pm
IAH
-
OPO
20h 25m
1 stop
Turkish Airlines Logo
6:10 am - 12:45 pm
OPO
-
IAH
36h 35m
1 stop
$751Turkish Airlines
Sat, Sep 12 - Thu, Sep 17
Turkish Airlines Logo
9:05 pm - 10:00 am
IAH
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
6:10 am - 12:45 pm
OPO
-
IAH
36h 35m
1 stop
$753Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 11:30 pm
IAH
-
OPO
20h 25m
1 stop
Turkish Airlines Logo
6:10 am - 7:10 pm
OPO
-
IAH
19h 00m
1 stop
$754Turkish Airlines
Tue, Apr 28 - Thu, May 28
Turkish Airlines Logo
9:05 pm - 10:00 am
IAH
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
6:10 am - 7:10 pm
OPO
-
IAH
19h 00m
1 stop
$761Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 10:00 am
IAH
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
4:40 pm - 7:10 pm
OPO
-
IAH
32h 30m
1 stop
$762Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 10:00 am
IAH
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
10:45 am - 12:45 pm
OPO
-
IAH
32h 00m
1 stop
$777Turkish Airlines
Tue, Apr 28 - Sun, May 3
Turkish Airlines Logo
2:30 pm - 9:45 am
IAH
-
OPO
37h 15m
1 stop
Turkish Airlines Logo
10:45 am - 7:10 pm
OPO
-
IAH
38h 25m
1 stop
$778Turkish Airlines
Fri, May 1 - Wed, May 27

Turkish Airlines flights from Houston George Bush Intcntl Airport to Porto

Our best Turkish Airlines deals on Houston George Bush Intcntl Airport to Porto flight tickets
Turkish Airlines
Apr 22
IAH9:05 pmHouston George Bush Intcntl
36h 40m
1 stop
OPO3:45 pmPorto
Apr 28
OPO10:40 amPorto
32h 05m
1 stop
IAH12:45 pmHouston George Bush Intcntl
$711
Turkish Airlines
Apr 28
IAH9:05 pmHouston George Bush Intcntl
30h 55m
1 stop
OPO10:00 amPorto
May 3
OPO10:45 amPorto
32h 00m
1 stop
IAH12:45 pmHouston George Bush Intcntl
$720
Turkish Airlines
Sep 15
IAH9:05 pmHouston George Bush Intcntl
30h 55m
1 stop
OPO10:00 amPorto
Sep 24
OPO6:10 amPorto
19h 00m
1 stop
IAH7:10 pmHouston George Bush Intcntl
$738

Delta flights from Houston George Bush Intcntl Airport to Porto

Our best Delta deals on Houston George Bush Intcntl Airport to Porto flight tickets
Delta
Jul 6
IAH5:05 pmHouston George Bush Intcntl
16h 20m
1 stop
OPO3:25 pmPorto
Aug 18
OPO11:30 amPorto
31h 45m
1 stop
IAH1:15 pmHouston George Bush Intcntl
$867
Delta
May 12
IAH3:25 pmHouston George Bush Intcntl
18h 00m
2 stops
OPO3:25 pmPorto
May 20
OPO5:00 amPorto
14h 20m
1 stop
IAH1:20 pmHouston George Bush Intcntl
$872
Delta
May 12
IAH2:45 pmHouston George Bush Intcntl
18h 45m
2 stops
OPO3:30 pmPorto
May 20
OPO5:00 amPorto
14h 20m
1 stop
IAH1:20 pmHouston George Bush Intcntl
$877

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 April 15, 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

Cheapest round-trip

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 4/28

9:05 pm-10:00 am

1 stop30h 55m

Porto

Sun 5/3

10:45 am-12:45 pm

1 stop32h 00m

$720

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 9/15

9:05 pm-10:00 am

1 stop30h 55m

Porto

Thu 9/24

6:10 am-7:10 pm

1 stop19h 00m

$738

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 9/29

9:05 pm-11:30 pm

1 stop20h 25m

Porto

Sat 10/10

10:45 am-7:10 pm

1 stop38h 25m

$746

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sat 9/12

9:05 pm-11:30 pm

1 stop20h 25m

Porto

Thu 9/17

6:10 am-12:45 pm

1 stop36h 35m

$751

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 9/15

9:05 pm-10:00 am

1 stop30h 55m

Porto

Thu 9/24

6:10 am-12:45 pm

1 stop36h 35m

$753
Quickest round-trip

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 4/28

9:05 pm-11:30 pm

1 stop20h 25m

Porto

Thu 5/28

6:10 am-7:10 pm

1 stop19h 00m

$754

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 9/15

9:05 pm-10:00 am

1 stop30h 55m

Porto

Thu 9/24

6:10 am-7:10 pm

1 stop19h 00m

$761

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 9/15

9:05 pm-10:00 am

1 stop30h 55m

Porto

Thu 9/24

4:40 pm-7:10 pm

1 stop32h 30m

$762

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Tue 4/28

9:05 pm-10:00 am

1 stop30h 55m

Porto

Sun 5/3

10:45 am-12:45 pm

1 stop32h 00m

$777

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Fri 5/1

2:30 pm-9:45 am

1 stop37h 15m

Porto

Wed 5/27

10:45 am-7:10 pm

1 stop38h 25m

$778

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Houston George Bush Intcntl Airport and Porto?

Can stopping save me money on Houston George Bush Intcntl Airport to Porto flights?

You could potentially save up to 25% on your flight if you consider stops on a Houston George Bush Intcntl Airport to Porto flight.

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

17h 30m

Direct flights

None
The fastest flight from Houston George Bush Intcntl Airport to Porto takes 17h 30m
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

Frequently asked questions about flying from Houston George Bush Intcntl Airport to Porto

  • 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 17h 30m, 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 $476Free CancellationRating
7.8
1,499 reviews
Search KLM flights
United AirlinesPriceFrom $641Free CancellationRating
7.4
9,589 reviews
Search United Airlines flights
LufthansaPriceFrom $831Free CancellationRating
6.8
7,927 reviews
Search Lufthansa flights

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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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