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Cheap flights from Houston George Bush Intcntl Airport to Portugal from $285

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 3/29. 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 Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:25 am - 10:45 am
IAH
-
LIS
22h 20m
2 stops
Delta Logo
5:00 am - 1:15 pm
LIS
-
IAH
14h 15m
1 stop
$541Delta
Sat, Apr 25 - Wed, May 6
Multiple Airlines Logo
3:30 pm - 5:45 pm
IAH
-
LIS
20h 15m
1 stop
Multiple Airlines Logo
12:30 pm - 11:59 pm
LIS
-
IAH
17h 29m
2 stops
$542Multiple Airlines
Sun, Apr 12 - Mon, Apr 27
Multiple Airlines Logo
3:30 pm - 11:15 pm
IAH
-
LIS
25h 45m
1 stop
Multiple Airlines Logo
6:35 am - 11:48 pm
LIS
-
IAH
23h 13m
2 stops
$543Multiple Airlines
Wed, Apr 22 - Wed, May 6
KLM Logo
3:50 pm - 3:25 pm
IAH
-
OPO
17h 35m
1 stop
KLM Logo
11:25 am - 1:15 pm
OPO
-
IAH
31h 50m
1 stop
$549KLM
Sun, Apr 12 - Mon, Apr 27
British Airways Logo
7:59 pm - 8:20 pm
IAH
-
OPO
18h 21m
2 stops
British Airways Logo
9:10 pm - 7:15 pm
OPO
-
IAH
28h 05m
1 stop
$596British Airways
Sun, Apr 12 - Mon, Apr 27
KLM Logo
3:50 pm - 3:25 pm
IAH
-
OPO
17h 35m
1 stop
KLM Logo
4:20 pm - 1:15 pm
OPO
-
IAH
26h 55m
1 stop
$599KLM
Mon, May 4 - Mon, May 11
British Airways Logo
7:59 pm - 8:20 pm
IAH
-
OPO
18h 21m
2 stops
British Airways Logo
9:10 pm - 7:15 pm
OPO
-
IAH
28h 05m
1 stop
$603British Airways
Sun, Apr 12 - Mon, Apr 27
Iberia Logo
5:25 pm - 10:40 am
IAH
-
FNC
35h 15m
2 stops
Iberia Logo
1:35 pm - 7:14 pm
FNC
-
IAH
59h 39m
2 stops
$1,131Iberia
Fri, Apr 17 - Wed, Jun 24
Iberia Logo
5:25 pm - 10:40 am
IAH
-
FNC
35h 15m
2 stops
Iberia Logo
1:35 pm - 7:47 pm
FNC
-
IAH
60h 12m
2 stops
$1,151Iberia
Fri, Apr 17 - Wed, Jun 24
TAP AIR PORTUGAL Logo
11:50 am - 1:30 am
IAH
-
FNC
31h 40m
2 stops
TAP AIR PORTUGAL Logo
4:05 am - 10:59 am
FNC
-
IAH
36h 54m
2 stops
$1,211TAP AIR PORTUGAL
Thu, Jun 4 - Tue, Jun 9

Iberia flights from Houston George Bush Intcntl Airport to Portugal

Our best Iberia deals on Houston George Bush Intcntl Airport to Portugal flight tickets
Iberia
Apr 22
IAH7:17 amHouston George Bush Intcntl
34h 08m
2 stops
LIS11:25 pmLisbon Humberto Delgado
May 2
LIS6:35 amLisbon Humberto Delgado
23h 24m
2 stops
IAH11:59 pmHouston George Bush Intcntl
$586
Iberia
Apr 6
IAH12:20 pmHouston George Bush Intcntl
17h 30m
2 stops
LIS11:50 amLisbon Humberto Delgado
Apr 15
LIS12:30 pmLisbon Humberto Delgado
17h 29m
2 stops
IAH11:59 pmHouston George Bush Intcntl
$612
Iberia
Aug 12
IAH6:29 pmHouston George Bush Intcntl
31h 11m
2 stops
OPO7:40 amPorto
Aug 18
OPO8:40 pmPorto
33h 14m
2 stops
IAH11:54 pmHouston George Bush Intcntl
$716

British Airways flights from Houston George Bush Intcntl Airport to Portugal

Our best British Airways deals on Houston George Bush Intcntl Airport to Portugal flight tickets
British Airways
Apr 25
IAH3:30 pmHouston George Bush Intcntl
20h 35m
1 stop
LIS6:05 pmLisbon Humberto Delgado
May 2
LIS7:10 amLisbon Humberto Delgado
18h 05m
1 stop
IAH7:15 pmHouston George Bush Intcntl
$555
British Airways
Apr 24
IAH9:05 pmHouston George Bush Intcntl
20h 05m
1 stop
LIS11:10 pmLisbon Humberto Delgado
May 8
LIS6:55 pmLisbon Humberto Delgado
24h 30m
1 stop
IAH1:25 pmHouston George Bush Intcntl
$560
British Airways
Apr 15
IAH3:30 pmHouston George Bush Intcntl
16h 40m
1 stop
LIS2:10 pmLisbon Humberto Delgado
Apr 28
LIS11:00 amLisbon Humberto Delgado
18h 48m
2 stops
IAH11:48 pmHouston George Bush Intcntl
$570

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 February 27, 2026.
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

Sat 4/25

6:25 am-10:45 am

2 stops22h 20m

Lisbon Humberto Delgado

Wed 5/6

5:00 am-1:15 pm

1 stop14h 15m

$541

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 4/12

3:30 pm-5:45 pm

1 stop20h 15m

Lisbon Humberto Delgado

Mon 4/27

12:30 pm-11:59 pm

2 stops17h 29m

$542

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/22

3:30 pm-11:15 pm

1 stop25h 45m

Lisbon Humberto Delgado

Wed 5/6

6:35 am-11:48 pm

2 stops23h 13m

$543

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 4/12

3:50 pm-3:25 pm

1 stop17h 35m

Porto

Mon 4/27

11:25 am-1:15 pm

1 stop31h 50m

$549

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 4/12

7:59 pm-8:20 pm

2 stops18h 21m

Porto

Mon 4/27

9:10 pm-7:15 pm

1 stop28h 05m

$596

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Mon 5/4

3:50 pm-3:25 pm

1 stop17h 35m

Porto

Mon 5/11

4:20 pm-1:15 pm

1 stop26h 55m

$599

HoustonPorto

IAH - OPO

IAHOPO

Houston George Bush Intcntl

Sun 4/12

7:59 pm-8:20 pm

2 stops18h 21m

Porto

Mon 4/27

9:10 pm-7:15 pm

1 stop28h 05m

$603

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Fri 4/17

5:25 pm-10:40 am

2 stops35h 15m

Funchal Madeira

Wed 6/24

1:35 pm-7:14 pm

2 stops59h 39m

$1,131

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Fri 4/17

5:25 pm-10:40 am

2 stops35h 15m

Funchal Madeira

Wed 6/24

1:35 pm-7:47 pm

2 stops60h 12m

$1,151

HoustonFunchal

IAH - FNC

IAHFNC

Houston George Bush Intcntl

Thu 6/4

11:50 am-1:30 am

2 stops31h 40m

Funchal Madeira

Tue 6/9

4:05 am-10:59 am

2 stops36h 54m

$1,211

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 November. Flight prices, which tend to average around $631, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, 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 November, still average around $705.

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 $855 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 $718 on momondo.

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

You could potentially save up to 1% on your flight if you consider stops on a Houston George Bush Intcntl Airport to Portugal flight.

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

Fastest flight time

12h 41m

Direct flights

None
The fastest flight from Houston George Bush Intcntl Airport to Portugal takes 12h 41m
There are no direct flights from Houston George Bush Intcntl Airport to Portugal. There are no popular flight routes from Houston George Bush Intcntl Airport to Portugal.
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
KLMPriceFrom $476Free CancellationRating
7.7
1,461 reviews
Search KLM flights
Air FrancePriceFrom $540Free CancellationRating
7.4
1,539 reviews
Search Air France flights
British AirwaysPriceFrom $559Free CancellationRating
6.7
7,772 reviews
Search British Airways flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
9,362 reviews
Search United Airlines flights
DeltaPriceFrom $620Free CancellationRating
7.9
8,244 reviews
Search Delta flights
Turkish AirlinesPriceFrom $621Free CancellationRating
7.3
4,238 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $646Free CancellationRating
7.1
10,757 reviews
Search Air Canada flights
LufthansaPriceFrom $831Free CancellationRating
6.8
7,817 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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