Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Houston 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 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.
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 to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
2:30 pm - 9:40 am
IAH
-
OPO
37h 10m
1 stop
Turkish Airlines Logo
10:45 am - 7:10 pm
OPO
-
IAH
38h 25m
1 stop
$688Turkish Airlines
Wed, Apr 29 - Wed, May 27
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
$691Turkish 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
$720Turkish Airlines
Tue, Apr 28 - Sun, May 3
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
$724Turkish Airlines
Tue, Apr 28 - Thu, May 28
Turkish Airlines Logo
2:30 pm - 9:40 am
IAH
-
OPO
37h 10m
1 stop
Turkish Airlines Logo
4:50 pm - 7:10 pm
OPO
-
IAH
32h 20m
1 stop
$728Turkish Airlines
Wed, Apr 29 - Mon, May 25
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
Delta Logo
5:02 pm - 10:15 pm
HOU
-
OPO
23h 13m
2 stops
Delta Logo
5:00 am - 10:26 pm
OPO
-
HOU
23h 26m
2 stops
$886Delta
Tue, May 12 - Tue, May 19
British Airways Logo
6:19 pm - 7:30 pm
HOU
-
OPO
19h 11m
2 stops
British Airways Logo
12:25 pm - 11:53 pm
OPO
-
HOU
17h 28m
2 stops
$925British Airways
Tue, Sep 29 - Sat, Oct 10
Delta Logo
5:23 pm - 10:00 pm
HOU
-
OPO
22h 37m
2 stops
Delta Logo
5:00 am - 10:26 pm
OPO
-
HOU
23h 26m
2 stops
$928Delta
Wed, May 6 - Wed, May 13
American Airlines Logo
4:18 pm - 4:00 pm
HOU
-
OPO
17h 42m
2 stops
American Airlines Logo
12:25 pm - 11:54 pm
OPO
-
HOU
17h 29m
2 stops
$934American Airlines
Wed, May 6 - Wed, May 13

Turkish Airlines flights from Houston to Porto

Our best Turkish Airlines deals on Houston to Porto flight tickets
Turkish Airlines
Aug 25
IAH9:05 pmHouston George Bush Intcntl
30h 55m
1 stop
OPO10:00 amPorto
Sep 3
OPO6:10 amPorto
19h 00m
1 stop
IAH7:10 pmHouston George Bush Intcntl
$688
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
$691
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

Delta flights from Houston to Porto

Our best Delta deals on Houston 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
Apr 22
HOU10:53 amHouston Hobby
22h 32m
2 stops
OPO3:25 pmPorto
Apr 28
OPO5:00 amPorto
24h 09m
2 stops
HOU11:09 pmHouston Hobby
$874

momondo Fare Finder

 
Customize your flight search to find flights from Houston 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 13, 2026.
Use the filters below to find and compare flights from Houston 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

Wed 4/29

2:30 pm-9:40 am

1 stop37h 10m

Porto

Wed 5/27

10:45 am-7:10 pm

1 stop38h 25m

$688

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

$691

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 4/28

9:05 pm-11:30 pm

1 stop20h 25m

Porto

Thu 5/28

6:10 am-7:10 pm

1 stop19h 00m

$724

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Wed 4/29

2:30 pm-9:40 am

1 stop37h 10m

Porto

Mon 5/25

4:50 pm-7:10 pm

1 stop32h 20m

$728

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

HOU - OPO

HOUOPO

Houston Hobby

Tue 5/12

5:02 pm-10:15 pm

2 stops23h 13m

Porto

Tue 5/19

5:00 am-10:26 pm

2 stops23h 26m

$886

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Tue 9/29

6:19 pm-7:30 pm

2 stops19h 11m

Porto

Sat 10/10

12:25 pm-11:53 pm

2 stops17h 28m

$925

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Wed 5/6

5:23 pm-10:00 pm

2 stops22h 37m

Porto

Wed 5/13

5:00 am-10:26 pm

2 stops23h 26m

$928
Quickest round-trip

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Wed 5/6

4:18 pm-4:00 pm

2 stops17h 42m

Porto

Wed 5/13

12:25 pm-11:54 pm

2 stops17h 29m

$934

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 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 and Porto?

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from Houston, with most prices found around $550. If you aren’t able to travel during the month of February, then book flights to Porto from Houston during November instead. Flights to Porto in November, while not as cheap as those in February, still average around $592.

Cheap Houston to Porto flight deals and tips

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

Fastest flight time

13h 47m

Direct flights

None
The fastest flight from Houston to Porto takes 13h 47m
There are no direct flights from Houston to Porto. There are no popular flight routes from Houston to Porto.
Search flight deals

Frequently asked questions about flying from Houston to Porto

  • How far is Houston to Porto by plane?

    A flight from Houston to Porto will travel around 4740.9 mi. A reasonable flight in good conditions will take 13h 47m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Porto Airport.

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

    The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Houston to Porto

Compare and see reviews for airlines that fly from Houston to Porto with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $476Free CancellationRating
7.8
1,496 reviews
Search KLM flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,579 reviews
Search United Airlines flights
LufthansaPriceFrom $831Free CancellationRating
6.8
7,919 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
Aveiro
Matosinhos
Esposende
Lamego
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Ponte de Lima
Viseu
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

Finding the right flight to Porto from Houston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Porto quick and easy, saving you time and money.

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

Flights from Houston to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Houston to Porto.

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

Yes momondo offers price alerts on flights to Porto from Houston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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
Wed 5/13
Wed 5/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal