$334 Cheap Flights from Houston (IAH) to Lisbon (LIS)

You can find cheap one-way flights from $334 and cheap return flights $716 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.

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.

Enter IAH to LIS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.