IAH - LIS

$347 Find Cheap Flights from Houston George Bush Airport to Lisbon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to Lisbon departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Lisbon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Lisbon.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Lisbon.
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Everything you should know

Cheapest round-trip
$600
Overall average: $783
Multiple Airlines
Wed 4/15Thu 4/23
IAH - LIS • 1 stop
Cheapest one-way
$347
Typical prices: $463-$596
Multiple Airlines
Sat 4/25
IAH - LIS • 2 stops
Top airlines
Cheapest • from $661 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between George Bush Intcntl and Lisbon. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $967 (round-trip)
Shortest trip • 12h 06m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 22% compared to booking last minute.
Insights
Insights
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Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
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+1
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Flight Deals

Cheap Flights from George Bush Intcntl to Lisbon (IAH-LIS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from George Bush Intcntl to Lisbon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from George Bush Intcntl to Lisbon

Wed, Apr 15 - Thu, Apr 23
Multiple Airlines Logo
6:00 pm - 5:15 pm
IAH
-
LIS
17h 15m
1 stop
Multiple Airlines Logo
10:20 am - 5:53 pm
LIS
-
IAH
13h 33m
1 stop
$600Multiple Airlines
Wed, Apr 15 - Mon, Apr 20
Multiple Airlines Logo
6:00 pm - 5:15 pm
IAH
-
LIS
17h 15m
1 stop
Multiple Airlines Logo
10:25 am - 7:15 pm
LIS
-
IAH
14h 50m
1 stop
$609Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
6:00 pm - 5:15 pm
IAH
-
LIS
17h 15m
1 stop
Multiple Airlines Logo
7:00 pm - 8:23 am
LIS
-
IAH
19h 23m
1 stop
$611Multiple Airlines
Wed, Apr 15 - Sun, Apr 19
Multiple Airlines Logo
6:00 pm - 5:15 pm
IAH
-
LIS
17h 15m
1 stop
Multiple Airlines Logo
6:00 pm - 8:23 am
LIS
-
IAH
20h 23m
1 stop
$616Multiple Airlines
Wed, Apr 15 - Thu, Apr 23
Multiple Airlines Logo
6:14 pm - 5:15 pm
IAH
-
LIS
17h 01m
2 stops
Multiple Airlines Logo
10:20 am - 7:55 pm
LIS
-
IAH
15h 35m
1 stop
$624Multiple Airlines
Wed, Apr 15 - Mon, Apr 20
Multiple Airlines Logo
6:14 pm - 5:15 pm
IAH
-
LIS
17h 01m
2 stops
Multiple Airlines Logo
10:25 am - 7:15 pm
LIS
-
IAH
14h 50m
1 stop
$625Multiple Airlines
Wed, Apr 22 - Wed, May 6
Turkish Airlines Logo
9:05 pm - 11:45 pm
IAH
-
LIS
20h 40m
1 stop
Turkish Airlines Logo
10:55 am - 7:10 pm
LIS
-
IAH
38h 15m
1 stop
$652Turkish Airlines
Thu, Sep 17 - Wed, Sep 30
Turkish Airlines Logo
9:05 pm - 3:35 pm
IAH
-
LIS
36h 30m
1 stop
Turkish Airlines Logo
5:55 am - 7:10 pm
LIS
-
IAH
19h 15m
1 stop
$654Turkish Airlines
Thu, Sep 17 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 3:35 pm
IAH
-
LIS
36h 30m
1 stop
Turkish Airlines Logo
5:05 pm - 12:45 pm
LIS
-
IAH
25h 40m
1 stop
$661Turkish Airlines
Wed, Apr 15 - Wed, Apr 22
Turkish Airlines Logo
2:30 pm - 9:50 am
IAH
-
LIS
37h 20m
1 stop
Turkish Airlines Logo
5:55 am - 7:10 pm
LIS
-
IAH
19h 15m
1 stop
$663Turkish Airlines
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to Lisbon flights

Get data-powered insights and trends into flights from George Bush Intcntl to Lisbon to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to Lisbon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to Lisbon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston George Bush Intcntl Airport to Lisbon is November, where tickets cost $631 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,280 and $1,131 respectively.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Lisbon?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston George Bush Intcntl Airport to Lisbon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to Lisbon, you should book around 2 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$347
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 46% increase in price.
Flight from Houston George Bush Airport to Lisbon

When to book flights from George Bush Intcntl to Lisbon

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to Lisbon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Houston George Bush Airport to Lisbon flights

  • Does LIS Airport have any currency exchanges?

    As you arrive in Lisbon, you will need to exchange your currency for euros to allow easier transactions while in Portugal. LIS Airport has a few currency exchanges where you can get these services. Unicambios Currency Exchange has a desk at the arrivals desk, at the entrance to the South Pier, at the baggage claim desk, and in the Lisbon Airport Underground Station.

  • Is public transport available from LIS Airport to the city center?

    As is the case with a majority of European cities, Lisbon is well connected to a public transport system that allows the locals to move from one point to another with ease. Humberto Delgado Airport has a subway station with a line connecting directly to the city center. This is one of the cheapest ways to get to the city center. However, if you would rather go for convenience, taking a taxi would be a better idea since they will drop you off at any destination you want.

  • How far is IAH from downtown Houston?

    George Bush Intercontinental Airport is about two miles away from downtown Houston meaning travelers have to deal with a conveniently short commute to the airport. This gives you multiple options since you can either take a taxi or use the metro to get to the airport. In terms of convenience, a taxi is the best option since they will pick you up wherever you are and drop you off at the airport, right outside the terminal buildings.

  • How can I get cheaper flight tickets?

    You can save a few dollars on flight tickets by booking your tickets a month or two in advance. by booking this early, you will be able to avoid the price hikes that usually happen as the date of travel approaches. You should also consider booking connecting flights instead of one direct flight if possible. this is because most airlines usually charge higher prices for the convenience of flying directly.

  • What is the cheapest flight from Houston George Bush Intcntl Airport to Lisbon?

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Lisbon was $347 for a one-way ticket and $661 for a round-trip.

  • Do I need a passport to fly between Houston George Bush Airport and Lisbon?

    Yes, you’ll need a passport to travel to Lisbon from Houston George Bush Airport.

  • Which aircraft models fly most regularly from Houston George Bush Airport to Lisbon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Houston George Bush Airport to Lisbon?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Houston George Bush Airport and Lisbon, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Lisbon from Houston George Bush Airport?

    London is the most popular layover city among KAYAK users traveling from Houston George Bush Airport to Lisbon.

  • Which is the best airline for flights from Houston to Lisbon, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Houston to Lisbon are Delta and KLM. With an average price for the route of $752 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,120 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Houston George Bush Airport to Lisbon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston George Bush Airport to Lisbon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston George Bush Airport to Lisbon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lisbon from Houston George Bush Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston George Bush Airport to Lisbon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Lisbon with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and LIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston George Bush Airport to Lisbon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Lisbon from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston George Bush Intcntl Airport to Lisbon

  • When flying out of George Bush Intercontinental Airport (IAH), ensure you arrive at the airport at least 3 hours before your departure time. Arriving this early gives you enough time to navigate the long security queues and ensures that you are ready for boarding once the gates open.
  • If you plan to leave your car at IAH, consider the offsite parking lots instead of using airport parking. Offsite parking is usually significantly cheaper than airport parking and you could end up saving up to fifty percent.
  • Traveling mums will be happy to hear that Humberto Delgado Airport (LIS) has multiple baby care facilities all over Terminals 1 and 2. These rooms feature a range of amenities that include changing tables, sinks, countertops, and electric outlets.
  • When flying out of IAH, you should consider staying at Houston Airport Marriott at George Bush Intercontinental the night before. This hotel is conveniently located at the airport thus eliminating the need for a long airport commute. It also is connected to all terminals via an underground tram service meaning you’re almost guaranteed to arrive on time.
  • Air France, KLM, American Airlines, and United Airlines each have a lounge at George Bush Intercontinental Airport. You should therefore consider booking your flight with one of these airlines to enjoy the lounge facilities before your flight.

Reviews of the top 5 airlines serving from George Bush Intcntl to Lisbon

 
See real verified KAYAK customer reviews for airlines flying from Houston to Lisbon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from George Bush Intcntl to Lisbon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8320 reviews
7.2Food
8.1Boarding
7.9Comfort
7.8Entertainment
8.5Crew
Airline reviews

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

4.0 OkayAnonymous, Mar 2026
BHM - ATL
Read more Delta reviews

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

I like flying first class, and United has a nice one

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

The most uncomfortable flight I’ve ever been on. I’m only 5,4” and barely had enough room to exist, couldn’t even fully relax my shoulders. Not sure why they bother with snacks. Half a coke and a single cookie?? Wow. Purchasable food looked gross too. Remember when airlines used to treat you like a human being?

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

I checked a bag and there was only one agent to assist all customers with any issues.

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Again, we were rerouted all the way to Zurich and had a longer journey than expected.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

WiFi wasn’t available to economy until the end of the flight.

Very good staff members with sincere passion and responsibility in their job.

We paid for Business Class seats, but system did not have us and they were not available.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

Everything you need to know for your flight from George Bush Intcntl to Lisbon

Information on your arrival and departure airports