$435 Cheap Flights from Houston (IAH) to Lisbon (LIS)

View $435 flight on Sun, Feb 8, 2026Opens in a new window

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

Cheap Flights from Houston to Lisbon (IAH-LIS)

Prices were available within the past 7 days and start at $435 for one-way flights and $527 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Feb 3 - Tue, Feb 17
IAH
Houston
LIS
Lisbon
$527 Roundtrip, found 14 hours ago
$527
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Feb 3 from Houston to Lisbon, returning Tue, Feb 17, priced at $527 found 14 hours ago
Delta
Sat, Feb 28 - Sun, Mar 8
IAH
Houston
LIS
Lisbon
$535 Roundtrip, found 2 hours ago
$535
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Feb 28 from Houston to Lisbon, returning Sun, Mar 8, priced at $535 found 2 hours ago
Scandinavian Airlines
Mon, Feb 23 - Sat, Feb 28
IAH
Houston
LIS
Lisbon
$538 Roundtrip, found 5 days ago
$538
Roundtrip
found 5 days ago
Select Scandinavian Airlines flight, departing Mon, Feb 23 from Houston to Lisbon, returning Sat, Feb 28, priced at $538 found 5 days ago
Air Canada
Thu, Nov 27 - Thu, Dec 4
IAH
Houston
LIS
Lisbon
$540 Roundtrip, found 1 hour ago
$540
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Thu, Nov 27 from Houston to Lisbon, returning Thu, Dec 4, priced at $540 found 1 hour ago
American Airlines
Tue, Feb 10 - Tue, Feb 17
IAH
Houston
LIS
Lisbon
$547 Roundtrip, found 3 hours ago
$547
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Feb 10 from Houston to Lisbon, returning Tue, Feb 17, priced at $547 found 3 hours ago
British Airways
Tue, Feb 10 - Tue, Feb 17
IAH
Houston
LIS
Lisbon
$548 Roundtrip, found 3 hours ago
$548
Roundtrip
found 3 hours ago
Select British Airways flight, departing Tue, Feb 10 from Houston to Lisbon, returning Tue, Feb 17, priced at $548 found 3 hours ago
Lufthansa
Wed, Jan 21 - Mon, Jan 26
IAH
Houston
LIS
Lisbon
$549 Roundtrip, found 2 days ago
$549
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Wed, Jan 21 from Houston to Lisbon, returning Mon, Jan 26, priced at $549 found 2 days ago
Iberia
Mon, Jan 12 - Sat, Feb 7
IAH
Houston
LIS
Lisbon
$559 Roundtrip, found 2 hours ago
$559
Roundtrip
found 2 hours ago
Select Iberia flight, departing Mon, Jan 12 from Houston to Lisbon, returning Sat, Feb 7, priced at $559 found 2 hours ago
Virgin Atlantic
Thu, Nov 27 - Thu, Dec 4
IAH
Houston
LIS
Lisbon
$559 Roundtrip, found 1 hour ago
$559
Roundtrip
found 1 hour ago
Select Virgin Atlantic flight, departing Thu, Nov 27 from Houston to Lisbon, returning Thu, Dec 4, priced at $559 found 1 hour ago
KLM
Tue, Mar 17 - Wed, Apr 1
IAH
Houston
LIS
Lisbon
$592 Roundtrip, found 14 hours ago
$592
Roundtrip
found 14 hours ago
Select KLM flight, departing Tue, Mar 17 from Houston to Lisbon, returning Wed, Apr 1, priced at $592 found 14 hours ago

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

February is typically the cheapest month to fly

From $508 - $985 per traveler.

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 $551
LIS
Humberto Delgado
Cheapest
Flights from $551

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS) cost?
Grab a cheap one-way flight from $435 or cheap return flight from $527 from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS)?
The cheapest month to fly from IAH to LIS is February, when there's less demand. Off-peak months are often when better flight deals are available between these airports.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Humberto Delgado Airport (LIS)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAH to LIS flight.
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.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian 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
$526
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 February. 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 $435 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

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*Available to One Key members.