$463 Cheap Flights from Houston (IAH) to Lisbon (LIS)

View $463 flight on Tue, Dec 30, 2025Opens 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 $463 for one-way flights and $584 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 11 - Tue, Nov 18
IAH
Houston
LIS
Lisbon
$584 Roundtrip, found 8 hours ago
$584
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Nov 11 from Houston to Lisbon, returning Tue, Nov 18, priced at $584 found 8 hours ago
United
Wed, Mar 4 - Thu, Mar 12
IAH
Houston
LIS
Lisbon
$588 Roundtrip, found 2 hours ago
$588
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Mar 4 from Houston to Lisbon, returning Thu, Mar 12, priced at $588 found 2 hours ago
Air Canada
Tue, Nov 4 - Tue, Nov 11
IAH
Houston
LIS
Lisbon
$590 Roundtrip, found 2 hours ago
$590
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Tue, Nov 4 from Houston to Lisbon, returning Tue, Nov 11, priced at $590 found 2 hours ago
American Airlines
Wed, Jan 14 - Mon, Jan 19
IAH
Houston
LIS
Lisbon
$602 Roundtrip, found 6 days ago
$602
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Jan 14 from Houston to Lisbon, returning Mon, Jan 19, priced at $602 found 6 days ago
British Airways
Mon, Feb 16 - Thu, Feb 26
IAH
Houston
LIS
Lisbon
$603 Roundtrip, found 5 days ago
$603
Roundtrip
found 5 days ago
Select British Airways flight, departing Mon, Feb 16 from Houston to Lisbon, returning Thu, Feb 26, priced at $603 found 5 days ago
Delta
Tue, Feb 10 - Tue, Feb 17
IAH
Houston
LIS
Lisbon
$607 Roundtrip, found 13 hours ago
$607
Roundtrip
found 13 hours ago
Select Delta flight, departing Tue, Feb 10 from Houston to Lisbon, returning Tue, Feb 17, priced at $607 found 13 hours ago
Virgin Atlantic
Mon, Jan 12 - Wed, Jan 21
IAH
Houston
LIS
Lisbon
$610 Roundtrip, found 2 hours ago
$610
Roundtrip
found 2 hours ago
Select Virgin Atlantic flight, departing Mon, Jan 12 from Houston to Lisbon, returning Wed, Jan 21, priced at $610 found 2 hours ago
Lufthansa
Tue, Nov 25 - Tue, Dec 2
IAH
Houston
LIS
Lisbon
$621 Roundtrip, just found
$621
Roundtrip
just found
Select Lufthansa flight, departing Tue, Nov 25 from Houston to Lisbon, returning Tue, Dec 2, priced at $621 just found
Iberia
Sun, Oct 19 - Wed, Nov 5
IAH
Houston
LIS
Lisbon
$642 Roundtrip, found 1 hour ago
$642
Roundtrip
found 1 hour ago
Select Iberia flight, departing Sun, Oct 19 from Houston to Lisbon, returning Wed, Nov 5, priced at $642 found 1 hour ago
Scandinavian Airlines
Sat, Jan 10 - Sat, Jan 17
IAH
Houston
LIS
Lisbon
$644 Roundtrip, found 12 hours ago
$644
Roundtrip
found 12 hours ago
Select Scandinavian Airlines flight, departing Sat, Jan 10 from Houston to Lisbon, returning Sat, Jan 17, priced at $644 found 12 hours ago

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

November is typically the cheapest month to fly

From $505 - $1,260 per traveler.

Graph displaying average flight prices per month

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 $774
LIS
Humberto Delgado
Cheapest
Flights from $774
Flights from Houston (IAH) to Lisbon (LIS)
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, JetBlue Airways, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$583
Distance
4770 mi

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 November. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $463 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.

 

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS) cost?
Discover the latest flight deals from IAH to LIS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAH to LIS?
The cheapest flights from IAH to LIS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAH to LIS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAH to LIS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS)?
There aren't any daily direct flights departing from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from IAH to LIS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS)?
To avoid possible delays on the George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS) route, fly before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS) last-minute?
Booking your plane ticket from IAH to LIS right before your trip is generally more expensive. But if you're flexible with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book an IAH to LIS flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to LIS flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place takes the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS)?
Usually, it's possible to cancel or reschedule your IAH to LIS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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Houston nearby Airports

Houston

George Bush Intercontinental to Lisbon
$583.41
William P. Hobby to Lisbon
$606.71
*Available to One Key members.