What is the cheapest airline that flies from Houston to Portugal?

British Airways, Iberia, and United Airlines are the most popular carriers operating from Houston to Portugal

What airlines fly to Portugal?

United Airlines, British Airways and Delta are the top three most popular airlines that fly to Portugal from Houston according to our data. United Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 8 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Houston to Portugal?

Prices for flights from Houston to Portugal refresh daily.

How many operators does momondo search for flights from Houston to Portugal?

There are 8 operators available for flights from Houston to Portugal as of March 2026.

How old do you have to be to fly from Houston to Portugal?

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 to Portugal.

What documentation or ID do you need to fly to Portugal?

The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$347 Cheap Flights from Houston to Portugal in 2026

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Find the cheapest flights from Houston to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:05 pm - 3:35 pm

IAH

LIS

36h 30m

1 stop

5:55 am - 12:45 pm

LIS

IAH

36h 50m

1 stop

$661Turkish Airlines

Thu, Sep 17 - Thu, Sep 24

9:05 pm - 3:35 pm

IAH

LIS

36h 30m

1 stop

4:45 pm - 7:10 pm

LIS

IAH

32h 25m

1 stop

$663Turkish Airlines

Thu, Sep 17 - Wed, Sep 30

11:33 am - 2:55 pm

HOU

LIS

21h 22m

2 stops

11:55 am - 11:08 pm

LIS

HOU

17h 13m

2 stops

$739Delta

Wed, Apr 8 - Thu, Apr 16

5:23 pm - 6:45 pm

HOU

LIS

19h 22m

2 stops

5:00 am - 11:07 pm

LIS

HOU

24h 07m

2 stops

$743Delta

Wed, Apr 15 - Wed, Apr 22

3:31 pm - 12:10 am

IAH

FNC

26h 39m

2 stops

8:35 am - 9:59 pm

FNC

IAH

43h 24m

2 stops

$744Multiple Airlines

Tue, May 5 - Fri, May 15

8:21 pm - 11:05 pm

HOU

LIS

20h 44m

2 stops

6:45 pm - 7:51 pm

LIS

HOU

31h 06m

2 stops

$821British Airways

Sun, Apr 19 - Tue, Apr 28

8:21 pm - 8:05 pm

HOU

OPO

17h 44m

2 stops

8:20 am - 11:47 pm

OPO

HOU

21h 27m

2 stops

$833British Airways

Mon, May 4 - Wed, May 20

3:31 pm - 12:10 am

IAH

FNC

26h 39m

2 stops

7:00 am - 8:37 am

FNC

IAH

31h 37m

3 stops

$953Multiple Airlines

Tue, May 5 - Fri, May 15

5:23 pm - 9:15 am

HOU

FNC

33h 52m

2 stops

6:15 pm - 4:09 pm

FNC

HOU

27h 54m

2 stops

$1,731KLM

Tue, May 5 - Tue, May 12

5:23 pm - 9:15 am

HOU

FNC

33h 52m

2 stops

10:30 am - 9:32 am

FNC

HOU

29h 02m

2 stops

$2,585KLM

Tue, May 5 - Fri, May 15

Turkish Airlines flights from Houston to Portugal

Our best Turkish Airlines deals on Houston to Portugal flight tickets

Turkish Airlines

Sep 17

IAH9:05 pmHouston George Bush Intcntl

36h 30m

1 stop

LIS3:35 pmLisbon Humberto Delgado

Sep 24

LIS5:55 amLisbon Humberto Delgado

36h 50m

1 stop

IAH12:45 pmHouston George Bush Intcntl

$661

Turkish Airlines

Sep 17

IAH9:05 pmHouston George Bush Intcntl

36h 30m

1 stop

LIS3:35 pmLisbon Humberto Delgado

Sep 30

LIS4:45 pmLisbon Humberto Delgado

32h 25m

1 stop

IAH7:10 pmHouston George Bush Intcntl

$663

Turkish Airlines

Aug 26

IAH9:05 pmHouston George Bush Intcntl

30h 45m

1 stop

LIS9:50 amLisbon Humberto Delgado

Sep 4

LIS5:55 amLisbon Humberto Delgado

19h 15m

1 stop

IAH7:10 pmHouston George Bush Intcntl

$664

Lufthansa flights from Houston to Portugal

Our best Lufthansa deals on Houston to Portugal flight tickets

Lufthansa

Apr 14

IAH3:35 pmHouston George Bush Intcntl

24h 35m

1 stop

LIS10:10 pmLisbon Humberto Delgado

Apr 29

LIS5:05 amLisbon Humberto Delgado

20h 04m

2 stops

IAH7:09 pmHouston George Bush Intcntl

$748

Lufthansa

Apr 5

IAH3:35 pmHouston George Bush Intcntl

24h 40m

1 stop

LIS10:15 pmLisbon Humberto Delgado

Apr 21

LIS5:05 amLisbon Humberto Delgado

20h 04m

2 stops

IAH7:09 pmHouston George Bush Intcntl

$794

Lufthansa

Apr 5

IAH3:35 pmHouston George Bush Intcntl

25h 10m

2 stops

LIS10:45 pmLisbon Humberto Delgado

Apr 21

LIS5:05 amLisbon Humberto Delgado

20h 04m

2 stops

IAH7:09 pmHouston George Bush Intcntl

$817

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 9/17

9:05 pm-3:35 pm

1 stop36h 30m

Lisbon Humberto Delgado

Thu 9/24

5:55 am-12:45 pm

1 stop36h 50m

$661

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 9/17

9:05 pm-3:35 pm

1 stop36h 30m

Lisbon Humberto Delgado

Wed 9/30

4:45 pm-7:10 pm

1 stop32h 25m

$663

Quickest round-trip

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Wed 4/8

11:33 am-2:55 pm

2 stops21h 22m

Lisbon Humberto Delgado

Thu 4/16

11:55 am-11:08 pm

2 stops17h 13m

$739

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Wed 4/15

5:23 pm-6:45 pm

2 stops19h 22m

Lisbon Humberto Delgado

Wed 4/22

5:00 am-11:07 pm

2 stops24h 07m

$743

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Tue 5/5

3:31 pm-12:10 am

2 stops26h 39m

Funchal Madeira

Fri 5/15

8:35 am-9:59 pm

2 stops43h 24m

$744

HoustonLisbon

HOU - LIS

HOULIS

Houston Hobby

Sun 4/19

8:21 pm-11:05 pm

2 stops20h 44m

Lisbon Humberto Delgado

Tue 4/28

6:45 pm-7:51 pm

2 stops31h 06m

$821

HoustonPorto

HOU - OPO

HOUOPO

Houston Hobby

Mon 5/4

8:21 pm-8:05 pm

2 stops17h 44m

Porto

Wed 5/20

8:20 am-11:47 pm

2 stops21h 27m

$833

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Tue 5/5

3:31 pm-12:10 am

2 stops26h 39m

Funchal Madeira

Fri 5/15

7:00 am-8:37 am

3 stops31h 37m

$953

HoustonFunchal

HOU - FNC

HOUFNC

Houston Hobby

Tue 5/5

5:23 pm-9:15 am

2 stops33h 52m

Funchal Madeira

Tue 5/12

6:15 pm-4:09 pm

2 stops27h 54m

$1,731

HoustonFunchal

HOU - FNC

HOUFNC

Houston Hobby

Tue 5/5

5:23 pm-9:15 am

2 stops33h 52m

Funchal Madeira

Fri 5/15

10:30 am-9:32 am

2 stops29h 02m

$2,585

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Houston to Portugal

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

Prices

Airlines

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Houston is in April. Flight prices, which tend to average around $650, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Portugal from Houston during January instead. Flights to Portugal in January, while not as cheap as those in April, still average around $680.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $878 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Houston for as low as $604 on momondo.

Cheap Houston to Portugal flight deals and tips

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

Fastest flight time	15h 35m
Direct flights	None

The fastest flight from Houston to Portugal takes 15h 35m

There are no direct flights from Houston to Portugal. There are no popular flight routes from Houston to Portugal.

Search flight deals

When did momondo last update prices for flights from Houston to Portugal?
Prices for flights from Houston to Portugal refresh daily.
How many operators does momondo search for flights from Houston to Portugal?
There are 8 operators available for flights from Houston to Portugal as of March 2026.
How old do you have to be to fly from Houston to Portugal?
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 to Portugal.
What documentation or ID do you need to fly to Portugal?
The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Houston to Portugal

Compare and see reviews for airlines that fly from Houston to Portugal with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $466	Free Cancellation	Rating 7.9 8,317 reviews	Search Delta flights
KLM	PriceFrom $476	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
Air France	PriceFrom $540	Free Cancellation	Rating 7.4 1,550 reviews	Search Air France flights
British Airways	PriceFrom $559	Free Cancellation	Rating 6.7 7,812 reviews	Search British Airways flights
United Airlines	PriceFrom $583	Free Cancellation	Rating 7.4 9,464 reviews	Search United Airlines flights
Turkish Airlines	PriceFrom $621	Free Cancellation	Rating 7.3 4,274 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $646	Free Cancellation	Rating 7.1 10,835 reviews	Search Air Canada flights
Lufthansa	PriceFrom $831	Free Cancellation	Rating 6.8 7,863 reviews	Search Lufthansa flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Houston to Portugal. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 Portugal.

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

Yes momondo offers price alerts on flights to Portugal 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 Portugal 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.

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Popular cities

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Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $489

Flights to Portofrom $466

Flights to Funchalfrom $501

Flights to Farofrom $471

Flights to Ponta Delgadafrom $529

Flights to Lajesfrom $569

Flights to Pico Islandfrom $579

Flights to Hortafrom $586

Flights to Porto Santofrom $675

Flights to Velasfrom $586

Cheap flights from Houston to Portugal from $347

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 Portugal departing on 4/25. 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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Turkish Airlines flights from Houston to Portugal

Our best Turkish Airlines deals on Houston to Portugal flight tickets

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How to get the cheapest flight ticket from Houston to Portugal

What is the cheapest month to fly to Portugal?

How far in advance should I book a flight to Portugal?

What is the cheapest airline that flies from Houston to Portugal?

What airlines fly to Portugal?

Cheap Houston to Portugal flight deals and tips

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

Fastest flight time

Direct flights

Best airlines flying from Houston to Portugal

Compare and see reviews for airlines that fly from Houston to Portugal with momondo

Why use momondo?

An easier way to manage your Portugal 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

List of cabin classes available on flights landing in Portugal. Availability may vary depending on flight origin and airline.

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year