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$234+ Cheap flights from George Bush Intcntl (IAH) to Lisbon (LIS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 12, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$501
(KLM)

One-way from

$234
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$704
Provider with most accurate pricing for Houston George Bush Intcntl-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Lisbon Humberto Delgado flights.
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From Houston George Bush Intcntl to Lisbon Humberto Delgado
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One-way flight from Houston George Bush Intcntl to Lisbon Humberto Delgado
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Highest demand for flights based on searches. 19% potential increase in price ($204 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from George Bush Intcntl to Lisbon

Cheapest flights from George Bush Intcntl to Lisbon
Explore the most affordable flight options available from George Bush Intcntl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.

This AirNGo deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/186:24 pm
IAH
-
LIS
2 stops56h 56m
Air Canada
Tue 2/35:00 am
LIS
-
IAH
2 stops19h 49m
Air Canada
Deal found 1/11$486
This United Airlines deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1810:31 am
IAH
-
LIS
1 stop15h 39m
United Airlines
Tue 2/35:00 am
LIS
-
IAH
1 stop19h 15m
United Airlines
Deal found 1/11$499
This KLM deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:38 pm
IAH
-
LIS
1 stop13h 22m
KLM
Mon 4/203:35 pm
LIS
-
IAH
1 stop27h 40m
KLM
Deal found 1/10$501
This Flighttix deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1812:10 pm
IAH
-
LIS
2 stops17h 25m
Multiple Airlines
Tue 2/35:00 am
LIS
-
IAH
1 stop19h 15m
Multiple Airlines
Deal found 1/11$503
This United Airlines deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/244:40 pm
IAH
-
LIS
1 stop11h 35m
United Airlines
Tue 3/35:00 am
LIS
-
IAH
1 stop19h 15m
United Airlines
Deal found 1/10$504
This KLM deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:50 pm
IAH
-
LIS
1 stop17h 05m
Multiple Airlines
Tue 4/219:20 am
LIS
-
IAH
1 stop33h 55m
Multiple Airlines
Deal found 1/11$505
This KLM deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/14:05 pm
IAH
-
LIS
1 stop13h 15m
Multiple Airlines
Tue 3/104:50 pm
LIS
-
IAH
1 stop26h 40m
Multiple Airlines
Deal found 1/11$506
This Delta deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/187:15 am
IAH
-
LIS
2 stops18h 45m
Delta
Tue 2/35:00 am
LIS
-
IAH
2 stops19h 46m
Delta
Deal found 1/10$507
This KLM deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1012:49 pm
IAH
-
LIS
1 stop13h 11m
KLM
Tue 2/175:00 am
LIS
-
IAH
2 stops18h 35m
KLM
Deal found 1/11$508
This KLM deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1012:49 pm
IAH
-
LIS
1 stop13h 11m
Multiple Airlines
Tue 2/175:30 am
LIS
-
IAH
1 stop14h 25m
Multiple Airlines
Deal found 1/11$509
This Delta deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:05 am
IAH
-
LIS
2 stops21h 10m
Delta
Tue 4/215:00 am
LIS
-
IAH
1 stop14h 15m
Delta
Deal found 1/11$510

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl to Lisbon 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, Cheapflights users made 2,558,603 searches. Data last updated January 12, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Lisbon that are best for you.

Fly from

George Bush Intcntl

Fly to

Lisbon

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/15

12:38 pm-8:00 am

1 stop13h 22m

Lisbon Humberto Delgado

Mon 4/20

3:35 pm-1:15 pm

1 stop27h 40m

$501

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 2/24

4:40 pm-10:15 am

1 stop11h 35m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-6:15 pm

1 stop19h 15m

$504

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 2/2

12:09 pm-8:10 am

1 stop14h 01m

Lisbon Humberto Delgado

Wed 2/11

5:00 am-6:15 pm

1 stop19h 15m

$504

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 4/13

3:50 pm-11:15 am

1 stop13h 25m

Lisbon Humberto Delgado

Tue 4/21

9:20 am-1:15 pm

1 stop33h 55m

$505

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 3/1

4:05 pm-11:20 am

1 stop13h 15m

Lisbon Humberto Delgado

Tue 3/10

4:50 pm-2:30 pm

1 stop26h 40m

$506

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/8

3:50 pm-2:55 pm

1 stop17h 05m

Lisbon Humberto Delgado

Wed 4/15

5:00 am-8:18 pm

2 stops21h 18m

$515

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/15

12:38 pm-8:00 am

1 stop13h 22m

Lisbon Humberto Delgado

Sun 4/19

3:35 pm-1:15 pm

1 stop27h 40m

$515

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 3/1

4:05 pm-3:10 pm

1 stop17h 05m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-9:11 pm

2 stops21h 11m

$516

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 2/19

12:10 pm-7:55 am

1 stop13h 45m

Lisbon Humberto Delgado

Tue 2/24

5:00 am-6:15 pm

1 stop19h 15m

$518

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 2/18

4:25 pm-5:30 pm

2 stops19h 05m

Lisbon Humberto Delgado

Tue 2/24

11:25 am-12:11 am

2 stops18h 46m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 17 results
1
2

Compare providers for flights from George Bush Intcntl to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to Lisbon in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-Lisbon flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Houston George Bush Intcntl Airport-Lisbon flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-Lisbon flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from George Bush Intcntl to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from George Bush Intcntl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to Lisbon

How far ahead should I book a flight from Houston George Bush Intcntl Airport to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from George Bush Intcntl to Lisbon. Price data was last updated on January 9, 2026.

The price you pay for your flight from Houston George Bush Intcntl Airport to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Lisbon?

Currently, February is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Lisbon (average of $509). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $889). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated January 12, 2026.
Read through reviews of airlines operating flights from Houston George Bush Intcntl Airport to Lisbon, such as Delta, Air France, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,039 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,039 reviews
Delta
7.9
Good
8,039 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air France
7.4
Good
1,520 reviews
Delta
7.9
Good
8,039 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,149 reviews
Delta
7.9
Good
8,039 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,618 reviews
Delta
7.9
Good
8,039 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,665 reviews
Delta
7.9
Good
8,039 reviews

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Lisbon from Houston George Bush Intcntl?

    For a flight from Houston George Bush Intcntl to Lisbon, you will be flying into Humberto Delgado. Lisbon Humberto Delgado (LIS) is just 4.2 mi from the center of the city. Humberto Delgado is the only Lisbon airport and it handles 0 inbound flights from Houston George Bush Intcntl per day. 8 airlines have flights to Lisbon Humberto Delgado from Houston George Bush Intcntl on a regular basis.

  • How long is the flight from Houston George Bush Intcntl Airport to Lisbon?

    Departing from Houston George Bush Intcntl Airport to Lisbon will take you 11h 35m. Airlines will cover a distance of 4767 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Houston George Bush Intcntl Airport to Lisbon round-trip?

    Flying on Air France is currently your cheapest option to Lisbon, with prices starting at $540. Additional round-trip tickets that might be worth considering are offered by Delta and British Airways, with the lowest prices starting at $546 and $558, respectively. These flights start at 35% lower than the current average price 3 months from now.

  • Can I find deals for flights from George Bush Intcntl to Lisbon that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to Lisbon.

  • Can I find deals for business class flights from George Bush Intcntl to Lisbon?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Lisbon?

    Currently, February is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Lisbon (average of $509). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $889). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
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Oeiras
Ericeira
Beja
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Torres Vedras
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Alternative routes for George Bush Intcntl to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
Hobby to Lisbon flights
Hobby to Porto flights
George Bush Intcntl to Porto flights
Hobby to Funchal flights
George Bush Intcntl to Funchal flights

Top 8 airlines flying from George Bush Intcntl to Lisbon

Discover the top 8 airlines that operate flights from George Bush Intcntl to Lisbon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$540Average$840FlexibilityNo cancel feeOn-time77%
DeltaCheapest$546Average$779FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$558Average$936FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$586Average$918FlexibilityNo cancel feeOn-time69%
KLMCheapest$595Average$1,044FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$621Average$726FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$646Average$952FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$699Average$1,005FlexibilityNo cancel feeOn-time71%

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