IAH - LIS

$284 Find Cheap Flights from Houston George Bush Airport to Lisbon - Compare and Save

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 10/18. 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

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Everything you should know

Cheapest round-trip
$705
Typical prices: $727-$1,267
Air Canada, Lufthansa
Tue 12/1Wed 12/9
IAH - LIS • 1 stop
Cheapest one-way
$284
Typical prices: $450-$506
Multiple Airlines
Sun 10/18
IAH - LIS • 2 stops
Top airlines
Cheapest • from $717 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between George Bush Intcntl and Lisbon. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $979 (round-trip)
Shortest trip • 12h 46m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 42% compared to booking last minute.
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When to travel
Cheapest • 32% price drop
Most popular
Good to know
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Booking Insights
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

Tue, Dec 1 - Wed, Dec 9
Multiple Airlines Logo
3:30 pm - 9:20 amIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
11h 50m1 stop Toronto Pearson Intl
Multiple Airlines Logo
5:00 am - 2:00 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
15h 00m1 stop Frankfurt am Main
$705Multiple Airlines
Sun, Jan 17 - Fri, Jan 29
Multiple Airlines Logo
3:30 pm - 9:20 amIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
11h 50m1 stop Toronto Pearson Intl
Multiple Airlines Logo
5:00 am - 2:00 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
15h 00m1 stop Frankfurt am Main
$706Multiple Airlines
Tue, Jan 19 - Tue, Jan 26
British Airways Logo
9:40 pm - 5:40 pmIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
14h 00m1 stop London Heathrow
British Airways Logo
11:05 am - 10:30 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
17h 25m1 stop Philadelphia
$717British Airways
Wed, Dec 2 - Wed, Dec 9
United Airlines Logo
11:50 am - 6:55 amIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
13h 05m1 stop Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
5:00 am - 2:00 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
15h 00m1 stop Frankfurt am Main
$723United Airlines
Mon, Nov 9 - Tue, Nov 17
United Airlines Logo
11:50 am - 10:40 amIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
16h 50m1 stop Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
5:00 am - 2:00 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
15h 00m1 stop Frankfurt am Main
$723United Airlines
Tue, Nov 10 - Mon, Nov 16
Delta Logo
7:10 pm - 5:30 pmIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
16h 20m1 stop Paris Charles de Gaulle
Delta Logo
11:30 am - 1:05 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
31h 35m1 stop Amsterdam Schiphol
$725Delta
Tue, Nov 24 - Wed, Dec 2
Delta Logo
7:10 pm - 5:30 pmIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
16h 20m1 stop Paris Charles de Gaulle
Delta Logo
11:30 am - 1:10 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
31h 40m1 stop Amsterdam Schiphol
$725Delta
Mon, Nov 2 - Mon, Nov 9
British Airways Logo
9:40 pm - 6:55 pmIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
15h 15m1 stop London Heathrow
British Airways Logo
3:50 pm - 2:05 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
28h 15m1 stop London Heathrow
$727British Airways
Sun, Jan 17 - Fri, Jan 29
Air Canada Logo
6:10 pm - 9:20 amIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
33h 10m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:00 am - 6:27 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
19h 27m2 stops Frankfurt am Main Toronto Pearson Intl
$739Air Canada
Tue, Nov 10 - Wed, Nov 18
Air Canada Logo
11:50 am - 9:20 amIAH  Houston George Bush Intcntl-LIS Lisbon Humberto Delgado
15h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
5:00 am - 6:42 pmLIS  Lisbon Humberto Delgado-IAH Houston George Bush Intcntl
19h 42m2 stops Frankfurt am Main Toronto Pearson Intl
$739Air Canada
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.

How much is a round-trip flight from Houston George Bush Intcntl Airport to Lisbon?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Houston George Bush Intcntl Airport to Lisbon departing in December.

Flight prices are below average for this route right now.

Flights to Lisbon from Houston George Bush Intcntl Airport usually cost between $987 and $1,207 in December.
The lowest price found in the past 5 days was $705 on Multiple Airlines (Dec 1-Dec 9).

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 $620 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,354 and $1,194 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 3 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low season

January

Cheapest flight

$284
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 20% lower on average.
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 5 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Lisbon was $284 for a one-way ticket and $705 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.

  • 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 $765 and an overall rating of 7.8, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,205 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.
7.8
KLMOverall score based on 1555 reviews
7.7Comfort
7.8Boarding
8.4Crew
7.3Food
7.2Entertainment
Airline reviews

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

10.0 ExcellentEmily, Jul 2026
Read more KLM reviews

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

Had to cancel and rebook, KLM connection was cancelled prior to departure, ended up flying to Munich on non-Delta carrier.

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Seats were comfortable crew members support was very good but AVML ordered or selected by us needs a lot of improvement.

overall the crew onboarding and providing service during our flight was great; they were friendly and helpful. I said ok to the entertainment because there was none, but the crew explained why which was very helpful. I am a diabetic and the type of snacks are not diabetic friendly (full of carbs and sugar). However, I am always prepared because I know the catering is for the larger population.

No tv. No free wifi. They need to ipgrade these planes - especially on a 2 hour flight.

delta wifi wouldn’t work boarding was not in sequence flight crew spent most of their time on the phone with the lights off pretending no one wanted or needed anything

Flight was 2 hr. delay, making me miss my connection to my final flight home to Roanoke. Now 12:38am in the morning and I just got the first available ticket at 5:30 pm tomorrow evening. Sleeping in the airport.

I am a die hard Delta flyer, but they missed it on this flight. It was on their very dated 717-200 aircraft, which I knew when I booked it so I knew it wouldn’t have seatback screens. However, the internet was awful and it wouldn’t even send texts a lot of the time, much less even connect to the delta app. It was also very hot while in the air, which never happens. What was even more disappointing is that the crew only gave me cheezits and a beverage, even though I was in Delta Comfort. The main cabin fare gets these items. I didn’t get any kind of improved snacks and that was unacceptable. The crew wasn’t very visible at all either. If this was my first delta flight, it would be my last. I am just going to assume it was a one-off flight.

flight was delayed 4+ hours. there was really no understanding of why? weather? the last hour of delay was post boarding. pilot seat was broken. was that the real reason? nonetheless, long day of inconveniences.

bulkhead seat had very little legroom - even in bsiness class.

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

Overall Delta was amazing from automatically booking us on the next flight once we missed our connection due to a delay to the constant communication throughout the entire process. We will continue to fly Delta going forward more and pay a little more if needed.

Our flight delayed, due to the incoming flight arriving late from Paris. AF caused us to miss our connecting flight, also booked through Air France directly. They couldn't accommodate us until later that night, and we had to be in AMS earlier than that. They won't do anything else to help us and wanted to charge us more money to rebook us too. Not great service, since it was all their fault.

Seats! The eternal problem in economy. They are like stones!!

Everything is good except the seats are tightened no rooms for the legs,

The plane's pilots, including the captain himself, thanked me for the flight. I know it's just marketing, but it was really nice to see these people. It's a great idea. Airplane food is never "good," but the entire crew and flight organization were top-notch. I really liked Delta, and I think I've traveled all over the world, and that was something new for me. Maybe even the old planes, the B767, but next time I have a choice, Delta will be my first choice. Thank you, a satisfied passenger :)

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

It was an OK flight with below mediocre service by their flight attendants

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

I did not get my baggage at my final destination..poor coordination with connecting flights with partner airlines (Saudi airways). Also the food was very mediocre.

Not great , just ok . I expected better food but it did not deliver . Flight staff was ok . The guy at the drop off bag counter was the only saving grace in this whole trip . He was pleasant, friendly and very helpful . You couldn’t ask for a better assistance from him .

I’m an EP on AA every year for more than a decade but this was a very pleasant and surprising experience. Clean and sizable plane for HOU to CHI. 5 row first class. And excellent food in first class the steak option was really good. Your flight attendants even better. Seat 5A

The experience with United Airlines was excellent; however, the experience with Houston Intercontinental Airport (IAH) was horrible. Although our flight departed from Terminal B, we had to go through security in Terminal C and then get on a train for travel to Terminal B. Additionally, there was significant walking required to get to the boarding location.

Unbelievably smooth boarding at IAH and the flight attendants were top notch.

We flew business fares. Was amazing. However, the check in didn't offer business fares preboarding which is less hectic. 8/10 due to this. Staff compared to Canadian carriers go above and beyond. Would gladly fly United again.

Comfortable seating POS to IAH. Food options were satisfactory. Good seat from IAH to ANC. Food options could be better.

Always pretty good as far as I see it. Staff was friendly and process was quick to get on and off.

There could have been better food options in economy on the long 7hr trip from IAH to AM.

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

As I remember my last BA flight - mediocre at best. Uncomfortable with poor and minimal food and drinks. Screen broke shortly into flight so didn’t have access to entertainment either.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

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.

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Even the carry-ons were not allowed and upon getting down, we had the wait for the longest time for the baggage to put on the jet aisle. We had a short connection which British Airways kept changing and made out entire experience poor. I would never fly BA again.

Horrible experience. They lost my luggage and still can’t find it. The plane ride was below average. Food also terrible compared to other airlines.

The team/crew were excellent. The USB ports were not working/broken, I tried multiple ports and also asked a staff member to check other ports on the flight, she confirmed they were not working!

It was good but my seat was terrible for a long trip, too small

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Seat layout, flight/club attendant service, food variety and quality could have been better. Business class Standard is visibly low compared with 6 other airlines that we have traveled for the past two years.

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

Information on your arrival and departure airports