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$290+ 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Houston George Bush Intcntl to Lisbon Humberto Delgado are usually found in February or January, booked 9 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$592
(Kiwi.com)

One-way from

$290
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$779
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. 20% potential increase in price ($213 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:30 pmIAH - LIS
1 stop16h 20mLufthansa
Tue 12/23:55 pmLIS - IAH
1 stop28h 40mLufthansa
Deal found 10/28$592
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:30 pmIAH - LIS
2 stops22h 35mMultiple Airlines
Tue 12/27:00 pmLIS - IAH
3 stops32h 39mMultiple Airlines
Deal found 10/28$593
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Thu 11/1312:30 pmIAH - LIS
1 stop14h 50mUnited Airlines
Tue 11/185:00 amLIS - IAH
1 stop19h 15mUnited Airlines
Deal found 10/29$597
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:29 amIAH - LIS
3 stops18h 51mMultiple Airlines
Thu 12/1110:55 amLIS - IAH
3 stops27h 30mMultiple Airlines
Deal found 10/28$601
This Air Canada deal was found by Cheapflights users on 10/28. 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.
Thu 11/1312:30 pmIAH - LIS
1 stop14h 50mAir Canada
Tue 11/185:00 amLIS - IAH
2 stops22h 44mAir Canada
Deal found 10/28$603
This Air France deal was found by Cheapflights users on 10/27. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:05 pmIAH - LIS
1 stop19h 25mMultiple Airlines
Tue 11/183:30 pmLIS - IAH
1 stop28h 00mMultiple Airlines
Deal found 10/27$604
This Air Canada deal was found by Cheapflights users on 10/28. 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.
Tue 11/1812:00 pmIAH - LIS
2 stops15h 20mMultiple Airlines
Mon 12/85:00 amLIS - IAH
2 stops22h 44mMultiple Airlines
Deal found 10/28$608
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:30 pmIAH - LIS
2 stops16h 15mMultiple Airlines
Tue 11/258:05 pmLIS - IAH
3 stops31h 34mMultiple Airlines
Deal found 10/28$611

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 October 29, 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 11/13

12:30 pm-9:20 am

1 stop14h 50m

Lisbon Humberto Delgado

Tue 11/18

5:00 am-6:15 pm

1 stop19h 15m

$597

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 11/13

12:30 pm-9:20 am

1 stop14h 50m

Lisbon Humberto Delgado

Tue 11/18

5:00 am-9:44 pm

2 stops22h 44m

$603

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 1/12

11:50 am-7:15 pm

3 stops25h 25m

Lisbon Humberto Delgado

Tue 1/20

7:40 am-9:39 pm

2 stops19h 59m

$608

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 11/30

4:05 pm-11:20 am

1 stop13h 15m

Lisbon Humberto Delgado

Wed 12/10

11:25 am-11:59 pm

2 stops18h 34m

$614

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/1

12:15 pm-9:05 am

2 stops14h 50m

Lisbon Humberto Delgado

Thu 1/8

8:55 am-10:24 pm

1 stop19h 29m

$615

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/18

3:09 pm-5:30 pm

2 stops20h 21m

Lisbon Humberto Delgado

Tue 11/25

11:25 am-11:57 pm

2 stops18h 32m

$634

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 3/11

11:50 am-11:20 am

2 stops18h 30m

Lisbon Humberto Delgado

Sat 3/21

5:30 am-2:55 pm

1 stop14h 25m

$645

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 12/31

7:25 am-10:15 am

1 stop20h 50m

Lisbon Humberto Delgado

Thu 1/8

10:55 am-11:09 am

2 stops30h 14m

$660

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 1/1

6:00 am-8:00 am

2 stops20h 00m

Lisbon Humberto Delgado

Sun 1/11

5:30 am-1:55 pm

1 stop14h 25m

$661

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 12/31

6:00 am-8:00 am

2 stops20h 00m

Lisbon Humberto Delgado

Sun 1/11

5:30 am-1:55 pm

1 stop14h 25m

$661

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 21 results
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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 October.
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

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Houston George Bush Intcntl Airport-Lisbon flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 October 24, 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 9 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 $515). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $873). 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 October 29, 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.

How much does it cost to fly round-trip from Houston George Bush Intcntl Airport to Lisbon?

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 October 29, 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
7,992 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Air France
7.4
Good
1,482 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,999 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Air Canada
7.1
Good
10,375 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,487 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 14h 50m. 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 33% 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 $515). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $873). 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?

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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.
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George Bush Intcntl to Porto flights
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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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$549Average$840FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$563Average$958FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$572Average$914FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$578Average$931FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$601Average$886FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$628Average$720FlexibilityNo cancel feeOn-time77%
DeltaCheapest$643Average$807FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$713Average$899FlexibilityNo cancel feeOn-time75%

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