$436 Cheap Flights from Houston (IAH) to Lisbon (LIS)

View $436 flight on Tue, Apr 21, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS)

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Cheap Flights from Houston to Lisbon (IAH-LIS)

Prices were available within the past 7 days and start at $436 for one-way flights and $541 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Apr 7 - Tue, Apr 14
IAH
Houston
LIS
Lisbon
$541 Roundtrip, found 13 hours ago
$541
Roundtrip
found 13 hours ago
Select Delta flight, departing Tue, Apr 7 from Houston to Lisbon, returning Tue, Apr 14, priced at $541 found 13 hours ago
Delta
Wed, Apr 22 - Wed, Apr 29
IAH
Houston
LIS
Lisbon
$541 Roundtrip, found 3 hours ago
$541
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Apr 22 from Houston to Lisbon, returning Wed, Apr 29, priced at $541 found 3 hours ago
Air Canada
Tue, Nov 17 - Sun, Nov 22
IAH
Houston
LIS
Lisbon
$542 Roundtrip, found 4 days ago
$542
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Nov 17 from Houston to Lisbon, returning Sun, Nov 22, priced at $542 found 4 days ago
United
Tue, Nov 10 - Wed, Nov 18
IAH
Houston
LIS
Lisbon
$544 Roundtrip, found 3 hours ago
$544
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Nov 10 from Houston to Lisbon, returning Wed, Nov 18, priced at $544 found 3 hours ago
American Airlines
Thu, Nov 12 - Thu, Nov 19
IAH
Houston
LIS
Lisbon
$549 Roundtrip, found 4 days ago
$549
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Nov 12 from Houston to Lisbon, returning Thu, Nov 19, priced at $549 found 4 days ago
British Airways
Fri, Apr 24 - Thu, Apr 30
IAH
Houston
LIS
Lisbon
$550 Roundtrip, found 1 hour ago
$550
Roundtrip
found 1 hour ago
Select British Airways flight, departing Fri, Apr 24 from Houston to Lisbon, returning Thu, Apr 30, priced at $550 found 1 hour ago
Iberia
Tue, Nov 17 - Tue, Nov 24
IAH
Houston
LIS
Lisbon
$556 Roundtrip, found 10 hours ago
$556
Roundtrip
found 10 hours ago
Select Iberia flight, departing Tue, Nov 17 from Houston to Lisbon, returning Tue, Nov 24, priced at $556 found 10 hours ago
Lufthansa
Thu, Nov 19 - Thu, Nov 26
IAH
Houston
LIS
Lisbon
$561 Roundtrip, found 1 hour ago
$561
Roundtrip
found 1 hour ago
Select Lufthansa flight, departing Thu, Nov 19 from Houston to Lisbon, returning Thu, Nov 26, priced at $561 found 1 hour ago
Virgin Atlantic
Thu, Nov 26 - Thu, Dec 3
IAH
Houston
LIS
Lisbon
$581 Roundtrip, found 6 hours ago
$581
Roundtrip
found 6 hours ago
Select Virgin Atlantic flight, departing Thu, Nov 26 from Houston to Lisbon, returning Thu, Dec 3, priced at $581 found 6 hours ago
KLM
Sat, Oct 17 - Sat, Oct 31
IAH
Houston
LIS
Lisbon
$597 Roundtrip, found 3 days ago
$597
Roundtrip
found 3 days ago
Select KLM flight, departing Sat, Oct 17 from Houston to Lisbon, returning Sat, Oct 31, priced at $597 found 3 days ago

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Alternative airports near Lisbon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Humberto Delgado LIS. Cheapest option available. Flights from $870
LIS
Humberto Delgado
Cheapest
Flights from $870

Find the cheapest month to fly from Houston (IAH) to Lisbon (LIS)

February is typically the cheapest month to fly

From $508 - $983 per traveler.

Frequently asked questions

How much does a flight from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) cost?
You can find cheap one-way flights from $436 and cheap return flights from $541 Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) with Expedia. One-way flights typically cost between $547 and $4956, and return flights often range between $687 and $5516. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
January is the cheapest month to fly from Houston, TX (IAH) to Lisbon (LIS), with average round-trip fares around $631. This is about 33% lower than the average price throughout the year, as travel demand tends to decrease after the holiday season. Other affordable months to consider are February and November.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
Enter IAH to LIS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
To find a cheap flight from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
Flying from Houston, TX (IAH) to Lisbon (LIS) is best done in January or February. Return flights are typically around $631, making these months both affordable and enjoyable. January offers a chance to escape the winter blues, while February is perfect for experiencing Lisbon's mild winter weather.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from IAH to LIS. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
The most popular departure times for flights from George Bush Intercontinental (IAH) to Humberto Delgado (LIS) are from 3pm to 6pm. About 31% of passengers prefer this time window. Airlines such as British Airways and United Airlines offer flights during this period. Many travelers choose this timing to enjoy a full day in Houston before their evening flight.
How long does it take to fly from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
Flights from IAH to LIS with one stop typically take around 14 hours 20 minutes, covering approximately 4,771 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
Business class seats are offered on the IAH to LIS route. Airlines that offer business class service on this route include:

  • British Airways
  • Turkish Airlines
  • Air France
  • Air Canada
  • United Airlines
  • KLM
  • Lufthansa
  • Delta Air Lines
  • American Airlines

First class is available with United Airlines and Lufthansa.
How do I earn miles on a Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) flight with Expedia?
It's easy to earn miles on a Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Lisbon from George Bush Intercontinental (IAH)?
If you're planning to travel to Lisbon from George Bush Intercontinental (IAH), you can fly into Humberto Delgado (LIS) Some flights may connect through major hubs like O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Lisbon. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) at the last minute?
Typically, booking a last minute flight from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) flight and hotel package?
Securing a Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) Lisbon Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado)?
If you booked your Houston, TX (IAH-George Bush Intercontinental) to Lisbon (LIS-Humberto Delgado) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$540
Distance
4770 mi

Book with confidence

Houston to Lisbon Flights

The cheapest times to fly from Houston to Lisbon

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Lisbon are during the month of April. You can find some of the cheapest flights from Houston to Lisbon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Lisbon

Sunday is one of the best days to book for cheap flights from Houston to Lisbon: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Lisbon

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Lisbon in 2026. You can also book with separate airlines for your outbound and return journeys, from $436 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Lisbon flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Lisbon airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Houston to Lisbon Flights

*Flight schedules are subject to change.

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*Available to One Key members.