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$259+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$618
(Air Canada)

One-way from

$259
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$888
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 ($202 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:00 pmIAH - LIS
1 stop36h 30mTurkish Airlines
Fri 10/2411:00 amLIS - IAH
1 stop38h 05mTurkish Airlines
Deal found 9/16$620
This Delta deal was found by Cheapflights users on 9/17. 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 10/143:10 pmIAH - LIS
2 stops17h 40mDelta
Tue 10/215:00 amLIS - IAH
2 stops18h 04mDelta
Deal found 9/17$621
This Delta deal was found by Cheapflights users on 9/16. 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 10/146:00 amIAH - LIS
1 stop20h 00mDelta
Wed 10/225:40 amLIS - IAH
1 stop13h 55mDelta
Deal found 9/16$622
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:20 amIAH - LIS
1 stop21h 45mMultiple Airlines
Tue 10/215:55 amLIS - IAH
2 stops20h 19mMultiple Airlines
Deal found 9/15$623
This Air Canada deal was found by Cheapflights users on 9/16. 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.
Sun 11/3011:55 amIAH - LIS
1 stop15h 25mAir Canada
Sun 12/710:50 amLIS - IAH
1 stop30h 19mAir Canada
Deal found 9/16$624
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 11/1412:30 pmIAH - LIS
2 stops20h 40mDelta
Sun 11/235:30 amLIS - IAH
2 stops18h 50mDelta
Deal found 9/16$625
This KLM deal was found by Cheapflights users on 9/17. 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 10/1912:37 pmIAH - LIS
1 stop13h 23mMultiple Airlines
Sat 11/16:30 pmLIS - IAH
1 stop25h 25mMultiple Airlines
Deal found 9/17$627
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:00 pmIAH - LIS
1 stop36h 15mTurkish Airlines
Wed 10/155:55 amLIS - IAH
1 stop19h 10mTurkish Airlines
Deal found 9/15$629
This KLM deal was found by Cheapflights users on 9/16. 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.
Thu 10/2312:37 pmIAH - LIS
1 stop13h 23mMultiple Airlines
Mon 10/276:30 pmLIS - IAH
1 stop25h 25mMultiple Airlines
Deal found 9/16$632
This Delta deal was found by Cheapflights users on 9/16. 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 10/127:25 pmIAH - LIS
1 stop30h 35mDelta
Tue 10/215:40 amLIS - IAH
1 stop13h 55mDelta
Deal found 9/16$633
This Finnair deal was found by Cheapflights users on 9/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:24 pmIAH - LIS
2 stops19h 01mFinnair
Mon 12/14:10 pmLIS - IAH
2 stops33h 12mFinnair
Deal found 9/16$634
This Delta deal was found by Cheapflights users on 9/16. 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 10/1310:00 amIAH - LIS
1 stop16h 00mDelta
Mon 10/2012:10 pmLIS - IAH
1 stop31h 25mDelta
Deal found 9/16$635

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 September 17, 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

Mon 10/20

12:37 pm-8:00 am

1 stop13h 23m

Lisbon Humberto Delgado

Tue 10/28

5:30 am-2:55 pm

1 stop14h 25m

$622

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 10/21

10:00 am-8:00 am

1 stop16h 00m

Lisbon Humberto Delgado

Tue 10/28

5:30 am-2:55 pm

1 stop14h 25m

$622

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 3/13

7:59 pm-10:15 am

1 stop33h 16m

Lisbon Humberto Delgado

Wed 3/25

11:55 am-12:26 am

1 stop17h 31m

$632

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 11/24

1:31 pm-8:10 am

1 stop12h 39m

Lisbon Humberto Delgado

Tue 12/2

11:20 am-11:57 pm

3 stops18h 37m

$640

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 10/13

3:10 pm-2:50 pm

2 stops17h 40m

Lisbon Humberto Delgado

Fri 10/24

5:40 am-1:35 pm

1 stop13h 55m

$640

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 10/15

12:55 pm-2:50 pm

2 stops19h 55m

Lisbon Humberto Delgado

Fri 10/24

5:40 am-1:35 pm

1 stop13h 55m

$640

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 10/12

7:25 pm-8:00 am

1 stop30h 35m

Lisbon Humberto Delgado

Mon 10/20

12:10 pm-1:35 pm

1 stop31h 25m

$646

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 10/16

7:20 am-11:05 am

1 stop21h 45m

Lisbon Humberto Delgado

Thu 10/23

12:20 pm-12:30 am

1 stop18h 10m

$672

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 11/21

12:15 pm-10:15 am

1 stop16h 00m

Lisbon Humberto Delgado

Fri 11/28

11:20 am-9:11 am

1 stop27h 51m

$676

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sat 10/25

12:37 pm-10:00 am

1 stop15h 23m

Lisbon Humberto Delgado

Sun 11/2

5:30 am-2:55 pm

1 stop14h 25m

$677

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
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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 September 12, 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, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Lisbon (average of $612). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $1,126). 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 September 17, 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 13% 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 September 17, 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
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.4
Good
1,468 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,367 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 13h 23m. 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 $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 $576, 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, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Lisbon (average of $612). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $1,126). 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

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$549Average$835FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$563Average$957FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$576Average$908FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$578Average$931FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$585Average$866FlexibilityNo cancel feeOn-time70%
DeltaCheapest$620Average$830FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$637Average$720FlexibilityNo cancel feeOn-time77%
KLMCheapest$713Average$899FlexibilityNo cancel feeOn-time75%

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