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Cheap flights from Houston George Bush Intcntl Airport to Portugal from $264

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 Portugal departing on 10/12. 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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Find the cheapest flights from Houston George Bush Intcntl Airport to Portugal

Cheap round-trip flights

United Airlines Logo
11:50 am - 9:20 amIAH-LIS
15h 30m1 stop
United Airlines Logo
10:55 am - 1:25 pmLIS-IAH
32h 30m2 stops
$577United Airlines
Find Deal
Tue, Nov 11 - Thu, Dec 4
United Airlines Logo
7:05 am - 9:20 amIAH-LIS
20h 15m2 stops
United Airlines Logo
10:55 am - 3:12 pmLIS-IAH
34h 17m2 stops
$581United Airlines
Find Deal
Tue, Nov 11 - Thu, Dec 4
United Airlines Logo
8:15 am - 9:20 amIAH-LIS
19h 05m2 stops
United Airlines Logo
10:55 am - 1:25 pmLIS-IAH
32h 30m2 stops
$582United Airlines
Find Deal
Tue, Nov 11 - Thu, Dec 4
Air Canada Logo
11:50 am - 9:20 amIAH-LIS
15h 30m1 stop
Air Canada Logo
5:00 am - 6:38 pmLIS-IAH
19h 38m2 stops
$589Air Canada
Find Deal
Tue, Nov 18 - Tue, Nov 25
Air Canada Logo
11:50 am - 9:20 amIAH-LIS
15h 30m1 stop
Air Canada Logo
10:55 am - 9:39 pmLIS-IAH
16h 44m1 stop
$590Air Canada
Find Deal
Tue, Nov 11 - Thu, Dec 4
British Airways Logo
3:50 pm - 4:40 pmIAH-OPO
18h 50m1 stop
British Airways Logo
8:40 pm - 9:30 pmOPO-IAH
30h 50m2 stops
$605British Airways
Find Deal
Mon, Dec 1 - Mon, Dec 15
British Airways Logo
11:16 am - 11:45 amIAH-OPO
18h 29m2 stops
British Airways Logo
8:40 pm - 9:30 pmOPO-IAH
30h 50m2 stops
$611British Airways
Find Deal
Mon, Dec 1 - Mon, Dec 15
Delta Logo
10:00 am - 8:00 amIAH-LIS
16h 00m2 stops
Delta Logo
12:20 pm - 1:55 pmLIS-IAH
31h 35m1 stop
$623Delta
Find Deal
Tue, Dec 2 - Mon, Dec 15
Delta Logo
6:15 pm - 9:00 amIAH-LIS
32h 45m1 stop
Delta Logo
12:20 pm - 1:55 pmLIS-IAH
31h 35m1 stop
$630Delta
Find Deal
Sat, Nov 29 - Mon, Dec 15
KLM Logo
3:30 pm - 9:30 amIAH-FNC
36h 00m1 stop
KLM Logo
10:25 am - 1:15 pmFNC-IAH
32h 50m1 stop
$1,772KLM
Find Deal
Sat, Oct 4 - Sat, Oct 11

United Airlines flights from Houston George Bush Intcntl Airport to Portugal

Our best United Airlines deals on Houston George Bush Intcntl Airport to Portugal flight tickets
United Airlines
Nov 11
IAH11:50 amHouston George Bush Intcntl
15h 30m
1 stop
LIS9:20 amLisbon Humberto Delgado
Dec 4
LIS10:55 amLisbon Humberto Delgado
32h 30m
2 stops
IAH1:25 pmHouston George Bush Intcntl
$577
Find similar
United Airlines
Nov 11
IAH7:05 amHouston George Bush Intcntl
20h 15m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 4
LIS10:55 amLisbon Humberto Delgado
34h 17m
2 stops
IAH3:12 pmHouston George Bush Intcntl
$581
Find similar
United Airlines
Nov 11
IAH8:15 amHouston George Bush Intcntl
19h 05m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 4
LIS10:55 amLisbon Humberto Delgado
32h 30m
2 stops
IAH1:25 pmHouston George Bush Intcntl
$582
Find similar

Delta flights from Houston George Bush Intcntl Airport to Portugal

Our best Delta deals on Houston George Bush Intcntl Airport to Portugal flight tickets
Delta
Dec 2
IAH10:00 amHouston George Bush Intcntl
16h 00m
2 stops
LIS8:00 amLisbon Humberto Delgado
Dec 15
LIS12:20 pmLisbon Humberto Delgado
31h 35m
1 stop
IAH1:55 pmHouston George Bush Intcntl
$623
Find similar
Delta
Nov 29
IAH6:15 pmHouston George Bush Intcntl
32h 45m
1 stop
LIS9:00 amLisbon Humberto Delgado
Dec 15
LIS12:20 pmLisbon Humberto Delgado
31h 35m
1 stop
IAH1:55 pmHouston George Bush Intcntl
$630
Find similar
Delta
Nov 29
IAH6:15 pmHouston George Bush Intcntl
32h 45m
1 stop
LIS9:00 amLisbon Humberto Delgado
Dec 15
LIS10:00 amLisbon Humberto Delgado
18h 04m
2 stops
IAH10:04 pmHouston George Bush Intcntl
$665
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Houston George Bush Intcntl Airport 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 August 6, 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/11

11:50 am-9:20 am

1 stop15h 30m

Lisbon Humberto Delgado

Thu 12/4

10:55 am-1:25 pm

2 stops32h 30m

$577

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/11

7:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Thu 12/4

10:55 am-3:12 pm

2 stops34h 17m

$581

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/11

8:15 am-9:20 am

2 stops19h 05m

Lisbon Humberto Delgado

Thu 12/4

10:55 am-1:25 pm

2 stops32h 30m

$582

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/18

11:50 am-9:20 am

1 stop15h 30m

Lisbon Humberto Delgado

Tue 11/25

5:00 am-6:38 pm

2 stops19h 38m

$589

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/11

11:50 am-9:20 am

1 stop15h 30m

Lisbon Humberto Delgado

Thu 12/4

10:55 am-9:39 pm

1 stop16h 44m

$590

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 12/1

3:50 pm-4:40 pm

1 stop18h 50m

Porto

Mon 12/15

8:40 pm-9:30 pm

2 stops30h 50m

$605

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 12/1

11:16 am-11:45 am

2 stops18h 29m

Porto

Mon 12/15

8:40 pm-9:30 pm

2 stops30h 50m

$611

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 12/2

10:00 am-8:00 am

2 stops16h 00m

Lisbon Humberto Delgado

Mon 12/15

12:20 pm-1:55 pm

1 stop31h 35m

$623

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sat 11/29

6:15 pm-9:00 am

1 stop32h 45m

Lisbon Humberto Delgado

Mon 12/15

12:20 pm-1:55 pm

1 stop31h 35m

$630

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Sat 10/4

3:30 pm-9:30 am

1 stop36h 00m

Funchal Madeira

Sat 10/11

10:25 am-1:15 pm

1 stop32h 50m

$1,772

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 George Bush Intcntl Airport 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 George Bush Intcntl Airport is in February. Flight prices, which tend to average around $595, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Houston George Bush Intcntl Airport during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $676.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Tuesday is the cheapest day to fly to Portugal from Houston George Bush Intcntl Airport. The lowest ticket price found for a Tuesday departure recently was $877. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,199.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Houston George Bush Intcntl Airport to Portugal during this time can be as low as $963. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,106 per ticket.

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

You are more likely to see cheaper flights to Portugal from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $862 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Houston George Bush Intcntl Airport for as low as $751 on momondo.

Cheap Houston George Bush Intcntl Airport to Portugal flight deals and tips

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

Best Price Found

$264

Fastest flight time

11h 20m

Direct flights

None

Airports in Portugal

2 airports
The best one-way flight to Portugal from Houston George Bush Intcntl Airport in the past 72 hours is $264. The best round-trip flight deal from Houston George Bush Intcntl Airport to Portugal found on momondo in the last 72 hours is $577.
The fastest flight from Houston George Bush Intcntl Airport to Portugal takes 11h 20m
There are no direct flights from Houston George Bush Intcntl Airport to Portugal. Popular non-direct routes for this connection are Houston George Bush Intcntl Airport - Lisbon Humberto Delgado Airport and Houston George Bush Intcntl Airport - Porto Airport.
There are 2 airports near Portugal: Lisbon Humberto Delgado (LIS), Porto (OPO)
Search flight deals

  • When did momondo last update prices for flights from Houston George Bush Intcntl Airport to Portugal?

    Prices for flights from Houston George Bush Intcntl Airport to Portugal refresh daily.

  • How many operators does momondo search for flights from Houston George Bush Intcntl Airport to Portugal?

  • How old do you have to be to fly from Houston George Bush Intcntl Airport to Portugal?

    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 George Bush Intcntl Airport to Portugal.

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

    The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Houston George Bush Intcntl Airport to Portugal

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to Portugal with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom $549Free CancellationRating
7.4
1,465 reviews
Search Air France flights
Air CanadaPriceFrom $563Free CancellationRating
7.1
9,893 reviews
Search Air Canada flights
DeltaPriceFrom $573Free CancellationRating
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $578Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $585Free CancellationRating
6.6
7,245 reviews
Search British Airways flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
KLMPriceFrom $629Free CancellationRating
7.8
1,381 reviews
Search KLM flights
Turkish AirlinesPriceFrom $637Free CancellationRating
7.3
3,932 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $679Free CancellationRating
6.8
7,289 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?

Yes. All flights to Portugal from Houston on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Houston to Portugal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Houston to Portugal flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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