HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Lisbon

$264+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from George Bush Intcntl to Lisbon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Houston George Bush Intcntl to Lisbon Humberto Delgado are usually found in February or November, booked 57 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap 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 December 12, 2025.

This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:10 amIAH - LIS
1 stop19h 45mAir Canada
Thu 1/812:40 pmLIS - IAH
2 stops26h 34mAir Canada
Deal found 12/11$787
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:57 amIAH - LIS
2 stops26h 23mMultiple Airlines
Fri 12/1911:55 amLIS - IAH
2 stops35h 30mMultiple Airlines
Deal found 12/11$824
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/317:05 pmIAH - LIS
1 stop15h 20mUnited Airlines
Wed 1/77:50 pmLIS - IAH
2 stops27h 30mUnited Airlines
Deal found 12/11$830
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Tue 12/301:35 pmIAH - LIS
1 stop12h 35mUnited Airlines
Thu 1/87:50 pmLIS - IAH
2 stops25h 55mUnited Airlines
Deal found 12/11$838
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/314:20 pmIAH - LIS
1 stop18h 05mUnited Airlines
Thu 1/82:40 pmLIS - IAH
1 stop32h 10mUnited Airlines
Deal found 12/11$870
This Delta deal was found by Cheapflights users on 12/11. 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.
Tue 12/304:05 pmIAH - LIS
1 stop17h 05mDelta
Thu 1/811:25 amLIS - IAH
1 stop32h 05mDelta
Deal found 12/11$874
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Mon 12/297:05 pmIAH - LIS
1 stop31h 40mUnited Airlines
Thu 1/87:50 pmLIS - IAH
2 stops25h 55mUnited Airlines
Deal found 12/11$895
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:30 pmIAH - LIS
1 stop24h 20mLufthansa
Fri 1/95:00 amLIS - IAH
2 stops17h 50mLufthansa
Deal found 12/11$907
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:00 pmIAH - LIS
2 stops33h 10mLufthansa
Fri 1/95:00 amLIS - IAH
2 stops17h 50mLufthansa
Deal found 12/11$913

Find 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 December 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$492
(Kiwi.com)

One-way from

$264
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$994
Provider with most accurate pricing for Houston George Bush Intcntl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Lisbon Humberto Delgado flights.
Search Deals
From Houston George Bush Intcntl to Lisbon Humberto Delgado
Search Deals
One-way flight from Houston George Bush Intcntl to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 2025.
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

Thu 1/29

1:35 pm-8:10 am

1 stop12h 35m

Lisbon Humberto Delgado

Tue 2/3

5:00 am-6:15 pm

1 stop19h 15m

$527

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 1/30

2:30 pm-8:10 am

1 stop11h 40m

Lisbon Humberto Delgado

Tue 2/3

5:00 am-6:15 pm

1 stop19h 15m

$532

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 2/9

2:30 pm-8:10 am

1 stop11h 40m

Lisbon Humberto Delgado

Mon 2/16

5:00 am-6:15 pm

1 stop19h 15m

$532

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 3/11

5:05 pm-3:10 pm

1 stop17h 05m

Lisbon Humberto Delgado

Mon 3/23

11:25 am-2:30 pm

1 stop32h 05m

$534

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 3/11

7:10 am-9:20 am

1 stop21h 10m

Lisbon Humberto Delgado

Thu 3/19

5:00 am-7:15 pm

1 stop19h 15m

$534

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/8

12:10 pm-9:20 am

1 stop15h 10m

Lisbon Humberto Delgado

Thu 1/22

11:20 am-3:40 pm

2 stops34h 20m

$534

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 3/11

7:10 am-9:20 am

1 stop21h 10m

Lisbon Humberto Delgado

Sat 3/21

5:00 am-7:15 pm

1 stop19h 15m

$534

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 1/13

8:30 am-10:00 am

3 stops43h 30m

$264

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/8

11:38 am-10:30 pm

3 stops28h 52m

$290

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 1/6

5:30 pm-2:45 pm

3 stops39h 15m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 13 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 December.
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 December 5, 2025.

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 57 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 $514). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $874). 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.

What is the cheapest time of day to fly from IAH to LIS?

Find hourly flight availability from George Bush Intcntl to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

When flying from Houston George Bush Intcntl Airport to Lisbon, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 12% versus a flight at noon.

What is the cheapest day to fly from Houston George Bush Intcntl Airport to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from George Bush Intcntl to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to Lisbon flight should consider departing on Thursday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 12, 2025.
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
8,009 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

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
8,009 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

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
1,502 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

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
9,095 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

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
10,514 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

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
7,571 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

7.9

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. 9 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 12h 35m. Airlines will cover a distance of 4767 mi.

  • 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 $549. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $563 and $572, respectively. These flights start at 34% 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 $514). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $874). 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
Fátima
Oeiras
Ericeira
Costa da Caparica
Torres Vedras
Beja
Nazaré
Sesimbra
Colares

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 9 airlines flying from George Bush Intcntl to Lisbon

Discover the top 9 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$549Average$840FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$563Average$937FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$571Average$915FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$599Average$894FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$621Average$720FlexibilityNo cancel feeOn-time77%
DeltaCheapest$643Average$805FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$646Average$994FlexibilityNo cancel feeOn-time76%
KLMCheapest$656Average$1,044FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$699Average$1,165FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.