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Cheap flights from Houston to Portugal from $334

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 11/1. 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

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Find the cheapest flights from Houston to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
9:05 pm - 11:45 pm
IAH
-
LIS
20h 40m
1 stop
Turkish Airlines Logo
5:55 am - 8:10 pm
LIS
-
IAH
19h 15m
1 stop
$759Turkish Airlines
Wed, Oct 21 - Wed, Oct 28
Turkish Airlines Logo
9:05 pm - 3:45 pm
IAH
-
LIS
36h 40m
1 stop
Turkish Airlines Logo
11:00 am - 7:10 pm
LIS
-
IAH
38h 10m
1 stop
$763Turkish Airlines
Wed, Aug 26 - Fri, Sep 4
United Airlines Logo
9:40 pm - 7:00 am
IAH
-
OPO
27h 20m
2 stops
United Airlines Logo
12:45 pm - 4:45 pm
OPO
-
IAH
34h 00m
2 stops
$766United Airlines
Mon, Oct 12 - Wed, Oct 21
United Airlines Logo
12:10 pm - 9:50 am
IAH
-
LIS
15h 40m
1 stop
United Airlines Logo
5:00 am - 6:15 pm
LIS
-
IAH
19h 15m
1 stop
$767United Airlines
Tue, Nov 3 - Tue, Nov 10
Delta Logo
10:55 am - 8:00 am
IAH
-
LIS
15h 05m
1 stop
Delta Logo
11:25 am - 1:30 pm
LIS
-
IAH
32h 05m
1 stop
$770Delta
Sun, Nov 1 - Mon, Nov 9
Delta Logo
8:15 am - 9:00 am
IAH
-
LIS
18h 45m
2 stops
Delta Logo
11:25 am - 1:30 pm
LIS
-
IAH
32h 05m
1 stop
$775Delta
Sun, Nov 1 - Wed, Nov 11
British Airways Logo
3:50 pm - 2:15 pm
IAH
-
FNC
16h 25m
1 stop
British Airways Logo
12:50 pm - 2:05 pm
FNC
-
IAH
31h 15m
1 stop
$908British Airways
Mon, Nov 2 - Sun, Nov 8
KLM Logo
3:20 pm - 5:50 pm
IAH
-
FNC
20h 30m
1 stop
KLM Logo
7:30 pm - 1:15 pm
FNC
-
IAH
23h 45m
1 stop
$1,075KLM
Sat, Sep 5 - Sat, Sep 12
British Airways Logo
9:00 pm - 11:30 am
IAH
-
FNC
32h 30m
1 stop
British Airways Logo
7:35 pm - 1:25 pm
FNC
-
IAH
23h 50m
1 stop
$1,284British Airways
Sun, Jun 28 - Tue, Jul 7
KLM Logo
5:35 pm - 5:50 pm
HOU
-
FNC
18h 15m
2 stops
KLM Logo
7:25 pm - 4:23 pm
FNC
-
HOU
26h 58m
2 stops
$1,655KLM
Sat, Sep 5 - Fri, Sep 11

Delta flights from Houston to Portugal

Our best Delta deals on Houston to Portugal flight tickets
Delta
Nov 1
IAH10:55 amHouston George Bush Intcntl
15h 05m
1 stop
LIS8:00 amLisbon Humberto Delgado
Nov 9
LIS11:25 amLisbon Humberto Delgado
32h 05m
1 stop
IAH1:30 pmHouston George Bush Intcntl
$770
Delta
Nov 1
IAH8:15 amHouston George Bush Intcntl
18h 45m
2 stops
LIS9:00 amLisbon Humberto Delgado
Nov 11
LIS11:25 amLisbon Humberto Delgado
32h 05m
1 stop
IAH1:30 pmHouston George Bush Intcntl
$775
Delta
Nov 2
IAH11:50 amHouston George Bush Intcntl
16h 45m
2 stops
LIS10:35 amLisbon Humberto Delgado
Nov 11
LIS5:00 amLisbon Humberto Delgado
19h 59m
2 stops
IAH6:59 pmHouston George Bush Intcntl
$789

Lufthansa flights from Houston to Portugal

Our best Lufthansa deals on Houston to Portugal flight tickets
Lufthansa
Nov 4
IAH6:20 pmHouston George Bush Intcntl
23h 10m
2 stops
LIS11:30 pmLisbon Humberto Delgado
Nov 11
LIS5:00 amLisbon Humberto Delgado
25h 14m
2 stops
IAH12:14 amHouston George Bush Intcntl
$786
Lufthansa
Nov 1
IAH4:30 pmHouston George Bush Intcntl
25h 00m
2 stops
LIS11:30 pmLisbon Humberto Delgado
Nov 13
LIS5:00 amLisbon Humberto Delgado
23h 44m
2 stops
IAH10:44 pmHouston George Bush Intcntl
$818
Lufthansa
Oct 30
IAH6:20 pmHouston George Bush Intcntl
24h 15m
2 stops
LIS11:35 pmLisbon Humberto Delgado
Nov 12
LIS5:00 amLisbon Humberto Delgado
25h 14m
2 stops
IAH12:14 amHouston George Bush Intcntl
$836

momondo Fare Finder

 
Customize your flight search to find flights from Houston to Portugal 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 May 9, 2026.
Use the filters below to find and compare flights from Houston to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 10/21

9:05 pm-11:45 pm

1 stop20h 40m

Lisbon Humberto Delgado

Wed 10/28

5:55 am-8:10 pm

1 stop19h 15m

$759

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 8/26

9:05 pm-3:45 pm

1 stop36h 40m

Lisbon Humberto Delgado

Fri 9/4

11:00 am-7:10 pm

1 stop38h 10m

$763

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 10/12

9:40 pm-7:00 am

2 stops27h 20m

Porto

Wed 10/21

12:45 pm-4:45 pm

2 stops34h 00m

$766
Quickest round-trip

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/3

12:10 pm-9:50 am

1 stop15h 40m

Lisbon Humberto Delgado

Tue 11/10

5:00 am-6:15 pm

1 stop19h 15m

$767

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 11/1

10:55 am-8:00 am

1 stop15h 05m

Lisbon Humberto Delgado

Mon 11/9

11:25 am-1:30 pm

1 stop32h 05m

$770

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 11/1

8:15 am-9:00 am

2 stops18h 45m

Lisbon Humberto Delgado

Wed 11/11

11:25 am-1:30 pm

1 stop32h 05m

$775

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Mon 11/2

3:50 pm-2:15 pm

1 stop16h 25m

Funchal Madeira

Sun 11/8

12:50 pm-2:05 pm

1 stop31h 15m

$908

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Sat 9/5

3:20 pm-5:50 pm

1 stop20h 30m

Funchal Madeira

Sat 9/12

7:30 pm-1:15 pm

1 stop23h 45m

$1,075

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Sun 6/28

9:00 pm-11:30 am

1 stop32h 30m

Funchal Madeira

Tue 7/7

7:35 pm-1:25 pm

1 stop23h 50m

$1,284

HoustonFunchal

HOU - FNC

HOUFNC

Houston Hobby

Sat 9/5

5:35 pm-5:50 pm

2 stops18h 15m

Funchal Madeira

Fri 9/11

7:25 pm-4:23 pm

2 stops26h 58m

$1,655

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

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

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Houston is in March. Flight prices, which tend to average around $395, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Houston during April instead. Flights to Portugal in April, while not as cheap as those in March, still average around $404.

How far in advance should I book a flight from Houston 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 $879 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 $628 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

11h 55m

Direct flights

None
The fastest flight from Houston to Portugal takes 11h 55m
There are no direct flights from Houston to Portugal. There are no popular flight routes from Houston to Portugal.
Search flight deals

Frequently asked questions about flying from Houston to Portugal

  • 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?

  • 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
LufthansaPriceFrom $395Free CancellationRating
6.8
7,985 reviews
Search Lufthansa flights
DeltaPriceFrom $466Free CancellationRating
7.9
8,457 reviews
Search Delta flights
KLMPriceFrom $476Free CancellationRating
7.8
1,513 reviews
Search KLM flights
Air FrancePriceFrom $540Free CancellationRating
7.4
1,585 reviews
Search Air France flights
British AirwaysPriceFrom $559Free CancellationRating
6.7
7,964 reviews
Search British Airways flights
United AirlinesPriceFrom $583Free CancellationRating
7.4
9,695 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $621Free CancellationRating
7.4
4,357 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $646Free CancellationRating
7.1
11,012 reviews
Search Air Canada 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.

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Find better results for your trip to Portugal

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