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Cheap flights from Portugal to Houston from $372

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Houston departing on 9/19. 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 Portugal to Houston

Recent round-trip flight deals from Portugal to Houston

Logo
10:35 am - 9:07 pmLIS-IAH
16h 32m1 stop
Logo
2:27 pm - 1:45 pmIAH-LIS
17h 18m1 stop
$639
Find Deal
Wed, Sep 17 - Fri, Sep 26
Logo
9:40 pm - 11:42 amLIS-IAH
44h 02m2 stops
Logo
12:58 pm - 10:50 amIAH-LIS
15h 52m1 stop
$640
Find Deal
Thu, Oct 2 - Wed, Oct 15
Logo
6:30 am - 11:42 amLIS-IAH
35h 12m2 stops
Logo
12:58 pm - 5:30 amIAH-LIS
34h 32m1 stop
$658
Find Deal
Fri, Sep 19 - Fri, Sep 26
KLM Logo
3:30 pm - 1:30 pmLIS-IAH
28h 00m1 stop
KLM Logo
9:40 am - 8:00 amIAH-LIS
16h 20m2 stops
$786KLM
Find Deal
Mon, Dec 22 - Wed, Jan 7
Delta Logo
11:40 am - 11:50 pmLIS-IAH
18h 10m2 stops
Delta Logo
12:37 pm - 2:50 pmIAH-LIS
20h 13m2 stops
$789Delta
Find Deal
Thu, Oct 2 - Wed, Oct 15
British Airways Logo
11:05 am - 9:58 pmLIS-IAH
16h 53m1 stop
British Airways Logo
1:23 pm - 11:10 pmIAH-LIS
27h 47m2 stops
$792British Airways
Find Deal
Tue, Sep 16 - Fri, Sep 26
American Airlines Logo
11:05 am - 10:12 pmLIS-IAH
17h 07m2 stops
American Airlines Logo
10:05 pm - 9:55 pmIAH-LIS
17h 50m1 stop
$796American Airlines
Find Deal
Fri, Dec 19 - Thu, Jan 8
British Airways Logo
7:10 am - 9:14 pmLIS-IAH
20h 04m2 stops
British Airways Logo
1:23 pm - 11:10 pmIAH-LIS
27h 47m2 stops
$803British Airways
Find Deal
Sat, Sep 20 - Fri, Sep 26
Delta Logo
9:50 am - 11:14 pmLIS-IAH
19h 24m2 stops
Delta Logo
3:58 pm - 5:50 pmIAH-LIS
19h 52m2 stops
$824Delta
Find Deal
Sun, Aug 31 - Sun, Sep 7
American Airlines Logo
11:05 am - 11:09 pmLIS-IAH
18h 04m2 stops
American Airlines Logo
12:09 pm - 9:05 amIAH-LIS
14h 56m2 stops
$987American Airlines
Find Deal
Sun, Aug 24 - Sat, Sep 6

Delta flights from Portugal to Houston George Bush Intcntl Airport

Our best Delta deals on Portugal to Houston George Bush Intcntl Airport flight tickets
Delta
Oct 2
LIS11:40 amLisbon Humberto Delgado
18h 10m
2 stops
IAH11:50 pmHouston George Bush Intcntl
Oct 15
IAH12:37 pmHouston George Bush Intcntl
20h 13m
2 stops
LIS2:50 pmLisbon Humberto Delgado
$789
Find similar
Delta
Aug 31
LIS9:50 amLisbon Humberto Delgado
19h 24m
2 stops
IAH11:14 pmHouston George Bush Intcntl
Sep 7
IAH3:58 pmHouston George Bush Intcntl
19h 52m
2 stops
LIS5:50 pmLisbon Humberto Delgado
$824
Find similar
Delta
Aug 24
LIS11:40 amLisbon Humberto Delgado
31h 35m
1 stop
IAH1:15 pmHouston George Bush Intcntl
Sep 6
IAH3:50 pmHouston George Bush Intcntl
20h 05m
1 stop
LIS5:55 pmLisbon Humberto Delgado
$857
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British Airways flights from Portugal to Houston George Bush Intcntl Airport

Our best British Airways deals on Portugal to Houston George Bush Intcntl Airport flight tickets
British Airways
Sep 16
LIS11:05 amLisbon Humberto Delgado
16h 53m
1 stop
IAH9:58 pmHouston George Bush Intcntl
Sep 26
IAH1:23 pmHouston George Bush Intcntl
27h 47m
2 stops
LIS11:10 pmLisbon Humberto Delgado
$792
Find similar
British Airways
Sep 20
LIS7:10 amLisbon Humberto Delgado
20h 04m
2 stops
IAH9:14 pmHouston George Bush Intcntl
Sep 26
IAH1:23 pmHouston George Bush Intcntl
27h 47m
2 stops
LIS11:10 pmLisbon Humberto Delgado
$803
Find similar
British Airways
Sep 21
LIS7:20 amLisbon Humberto Delgado
17h 55m
1 stop
IAH7:15 pmHouston George Bush Intcntl
Sep 26
IAH3:30 pmHouston George Bush Intcntl
25h 40m
1 stop
LIS11:10 pmLisbon Humberto Delgado
$935
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Houston George Bush Intcntl Airport 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 4, 2025.
Use the filters below to find and compare flights from Portugal to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 9/17

10:35 am-9:07 pm

1 stop16h 32m

Houston George Bush Intcntl

Fri 9/26

2:27 pm-1:45 pm

1 stop17h 18m

$639

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 10/2

9:40 pm-11:42 am

2 stops44h 02m

Houston George Bush Intcntl

Wed 10/15

12:58 pm-10:50 am

1 stop15h 52m

$640

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 9/19

6:30 am-11:42 am

2 stops35h 12m

Houston George Bush Intcntl

Fri 9/26

12:58 pm-5:30 am

1 stop34h 32m

$658

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 12/22

3:30 pm-1:30 pm

1 stop28h 00m

Houston George Bush Intcntl

Wed 1/7

9:40 am-8:00 am

2 stops16h 20m

$786

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 10/2

11:40 am-11:50 pm

2 stops18h 10m

Houston George Bush Intcntl

Wed 10/15

12:37 pm-2:50 pm

2 stops20h 13m

$789

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 9/16

11:05 am-9:58 pm

1 stop16h 53m

Houston George Bush Intcntl

Fri 9/26

1:23 pm-11:10 pm

2 stops27h 47m

$792

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 12/19

11:05 am-10:12 pm

2 stops17h 07m

Houston George Bush Intcntl

Thu 1/8

10:05 pm-9:55 pm

1 stop17h 50m

$796

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 9/20

7:10 am-9:14 pm

2 stops20h 04m

Houston George Bush Intcntl

Fri 9/26

1:23 pm-11:10 pm

2 stops27h 47m

$803

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 8/31

9:50 am-11:14 pm

2 stops19h 24m

Houston George Bush Intcntl

Sun 9/7

3:58 pm-5:50 pm

2 stops19h 52m

$824

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 8/24

11:05 am-11:09 pm

2 stops18h 04m

Houston George Bush Intcntl

Sat 9/6

12:09 pm-9:05 am

2 stops14h 56m

$987

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 Houston from

How to get the cheapest flight ticket from Portugal to Houston George Bush Intcntl Airport

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 Houston George Bush Intcntl Airport?

The month of April is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Portugal, with most prices found around $733. If you are unable to visit Houston George Bush Intcntl Airport during the month of April, then departing from Portugal during the month November is also very affordable. Most momondo users find prices during this month for around $772.

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from Portugal to Houston George Bush Intcntl Airport is on a Tuesday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Tuesday will often find tickets for as low as $758. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Thursday is $1,376.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest Portugal to Houston George Bush Intcntl Airport flights are usually those with departure times in the evening. Our users have found flights to Houston George Bush Intcntl Airport in the evening for as low as $790. Try not to purchase tickets in the morning because they tend to be around $1,023. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 40% on your flight if you consider stops on a Portugal to Houston George Bush Intcntl Airport flight.

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

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

Best Price Found

$372

Fastest flight time

13h 56m

Direct flights

None
The best one-way flight to Houston George Bush Intcntl Airport from Portugal in the past 72 hours is $372. The best round-trip flight deal from Portugal to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $639.
The fastest flight from Portugal to Houston George Bush Intcntl Airport takes 13h 56m
There are no direct flights from Portugal to Houston George Bush Intcntl Airport. Popular non-direct route for this connection is Lisbon Humberto Delgado Airport - Houston George Bush Intcntl Airport.
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  • When did momondo last update prices for flights from Portugal to Houston George Bush Intcntl Airport?

    Prices for flights from Portugal to Houston George Bush Intcntl Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The necessary travel and health documents for your Houston George Bush Intcntl Airport 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 Portugal to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Portugal to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $682Free CancellationRating
6.6
7,233 reviews
Search British Airways flights

Traveling to a place near Houston?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portugal to Houston for you.

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

Yes. momondo allows you to filter the results for Portugal to Houston flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Houston from Portugal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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