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$295+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LIS
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
1 adult, Economy
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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 July 9, 2026.

This United Airlines deal was found by Cheapflights users on 7/9. 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 11/1111:50 am
IAH
-
LIS
1 stop13h 05m
United Airlines
Thu 11/195:00 am
LIS
-
IAH
1 stop19h 15m
United Airlines
Deal found 7/9$722
This United Airlines deal was found by Cheapflights users on 7/6. 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 11/107:30 am
IAH
-
LIS
1 stop18h 40m
United Airlines
Wed 11/185:00 am
LIS
-
IAH
1 stop19h 15m
United Airlines
Deal found 7/6$723
This Gotogate deal was found by Cheapflights users on 7/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:10 pm
IAH
-
LIS
1 stop16h 45m
Multiple Airlines
Wed 11/115:00 am
LIS
-
IAH
2 stops35h 53m
Multiple Airlines
Deal found 7/8$726
This Air Canada deal was found by Cheapflights users on 7/8. 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 11/106:10 pm
IAH
-
LIS
2 stops30h 45m
Air Canada
Wed 11/185:00 am
LIS
-
IAH
2 stops19h 27m
Air Canada
Deal found 7/8$730
This United Airlines deal was found by Cheapflights users on 7/5. 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 10/126:05 pm
IAH
-
LIS
1 stop32h 15m
United Airlines
Wed 11/411:20 am
LIS
-
IAH
1 stop27h 45m
United Airlines
Deal found 7/5$732
This Gotogate deal was found by Cheapflights users on 7/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:00 am
IAH
-
LIS
1 stop17h 20m
Multiple Airlines
Wed 10/285:00 am
LIS
-
IAH
1 stop15h 00m
Multiple Airlines
Deal found 7/8$738
This Delta deal was found by Cheapflights users on 7/9. 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.
Wed 11/1112:55 pm
IAH
-
LIS
2 stops20h 15m
Delta
Thu 11/195:00 am
LIS
-
IAH
2 stops17h 35m
Delta
Deal found 7/9$739
This United Airlines deal was found by Cheapflights users on 7/8. 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 10/2110:00 am
IAH
-
LIS
1 stop17h 20m
United Airlines
Wed 10/285:00 am
LIS
-
IAH
1 stop15h 00m
United Airlines
Deal found 7/8$753
This United Airlines deal was found by Cheapflights users on 7/8. 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 11/226:40 pm
IAH
-
LIS
1 stop33h 40m
United Airlines
Wed 12/212:25 pm
LIS
-
IAH
1 stop35h 50m
United Airlines
Deal found 7/8$755

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 July 9, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$722
(United Airlines)

One-way from

$295
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,166
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.
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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. 26% potential increase in price ($333 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 9, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 11/10

7:30 am-8:10 am

1 stop18h 40m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-6:15 pm

1 stop19h 15m

$723

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 10/21

9:42 am-8:00 am

2 stops16h 18m

Lisbon Humberto Delgado

Wed 10/28

5:00 am-2:25 pm

1 stop14h 25m

$760

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 12/6

1:35 pm-8:10 am

1 stop12h 35m

Lisbon Humberto Delgado

Thu 12/10

5:00 am-6:15 pm

1 stop19h 15m

$766

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sat 10/17

8:20 pm-8:20 am

1 stop30h 00m

Lisbon Humberto Delgado

Sat 11/7

11:20 am-5:08 pm

1 stop35h 48m

$782

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 9/22

3:55 pm-11:15 am

1 stop13h 20m

Lisbon Humberto Delgado

Tue 9/29

5:00 am-1:15 pm

1 stop14h 15m

$785

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 12/6

7:40 am-8:10 am

1 stop18h 30m

Lisbon Humberto Delgado

Sun 12/13

5:00 am-6:15 pm

1 stop19h 15m

$795

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 12/6

9:40 am-11:20 am

2 stops19h 40m

Lisbon Humberto Delgado

Sun 12/13

5:00 am-1:25 pm

1 stop14h 25m

$801

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 10/7

5:50 pm-6:45 pm

2 stops18h 55m

Lisbon Humberto Delgado

Wed 10/14

5:00 am-8:08 pm

2 stops21h 08m

$803

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 10/7

5:50 pm-6:45 pm

2 stops18h 55m

Lisbon Humberto Delgado

Tue 10/13

5:00 am-8:08 pm

2 stops21h 08m

$803

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 10/4

9:10 pm-5:45 pm

1 stop14h 35m

Lisbon Humberto Delgado

Mon 10/12

6:45 pm-1:25 pm

1 stop24h 40m

$832

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 17 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Houston George Bush Intcntl Airport-Lisbon flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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?

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 82 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, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Lisbon (average of $615). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $1,354). 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.

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 July 9, 2026.
Read through reviews of airlines operating flights from Houston George Bush Intcntl Airport to Lisbon, such as Delta,Air France, andTurkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,453 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Delta
7.8
Good
8,453 reviews
Delta
7.8
Good
8,453 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Air France
7.5
Good
1,625 reviews
Delta
7.8
Good
8,453 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Turkish Airlines
7.4
Good
4,441 reviews
Delta
7.8
Good
8,453 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
United Airlines
7.4
Good
9,963 reviews
Delta
7.8
Good
8,453 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
British Airways
6.7
Okay
8,106 reviews
Delta
7.8
Good
8,453 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.

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. 7 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 16h 18m. 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 KLM and Delta, with the lowest prices starting at $541 and $541, respectively. These flights start at 40% 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, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Lisbon (average of $615). Flying from Houston George Bush Intcntl Airport to Lisbon in June is currently the most expensive (average of $1,354). 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
Beja
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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.
George Bush Intcntl to Porto flights

Top 7 airlines flying from George Bush Intcntl to Lisbon

Discover the top 7 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 July 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$540Average$753FlexibilityNo cancel feeOn-time77%
KLMCheapest$541Average$1,205FlexibilityNo cancel feeOn-time75%
DeltaCheapest$541Average$756FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$559Average$860FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$581Average$917FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$621Average$720FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$646Average$841FlexibilityNo cancel feeOn-time67%

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