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IAH - OPO

Find cheap flights from Houston George Bush Airport to Porto from $356

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 Porto departing on 9/24. 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
0 bags
Thu 6/13
Thu 6/20

Search hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Porto.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Porto.
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

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Cheap flight deals from George Bush Intcntl to Porto (IAH-OPO)

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 Porto 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 and deals for you by selecting your travel dates.
Choose your dates
12:00 pm - 11:55 amIAH-OPO
18h 55m2 stops
6:00 am - 9:58 pmOPO-IAH
21h 58m2 stops
Mon, Oct 28 - Wed, Nov 6
5:05 pm - 10:50 amIAH-OPO
12h 45m1 stop
5:00 am - 1:35 pmOPO-IAH
14h 35m1 stop
$761Delta
Find Deal
Mon, Oct 28 - Wed, Nov 6
9:00 pm - 7:35 amIAH-OPO
28h 35m2 stops
8:35 pm - 7:05 pmOPO-IAH
28h 30m2 stops
$874Iberia
Find Deal
Tue, Sep 24 - Mon, Oct 7
3:20 pm - 10:40 amIAH-OPO
13h 20m1 stop
4:20 pm - 1:25 pmOPO-IAH
27h 05m1 stop
$969KLM
Find Deal
Tue, Aug 6 - Wed, Aug 14
3:20 pm - 10:15 pmIAH-OPO
24h 55m1 stop
9:20 am - 10:41 pmOPO-IAH
19h 21m2 stops
$1,002KLM
Find Deal
Tue, Jul 16 - Wed, Jul 24
2:25 pm - 9:45 amIAH-OPO
13h 20m1 stop
12:35 pm - 10:14 pmOPO-IAH
15h 39m1 stop
$1,011United Airlines
Find Deal
Mon, May 27 - Thu, Jun 20
2:25 pm - 9:45 amIAH-OPO
13h 20m1 stop
12:35 pm - 11:30 pmOPO-IAH
16h 55m2 stops
$1,015United Airlines
Find Deal
Mon, May 27 - Thu, Jun 20
6:25 pm - 10:45 pmIAH-OPO
22h 20m1 stop
11:10 am - 2:40 pmOPO-IAH
33h 30m2 stops
$1,918Lufthansa
Find Deal
Wed, Sep 11 - Wed, Sep 25
6:28 pm - 3:55 pmIAH-OPO
15h 27m2 stops
8:35 pm - 5:19 pmOPO-IAH
26h 44m2 stops
$1,919Iberia
Find Deal
Sat, Jul 27 - Wed, Jul 31
4:41 pm - 11:20 pmIAH-OPO
24h 39m2 stops
6:00 am - 5:45 pmOPO-IAH
17h 45m1 stop
$1,952Lufthansa
Find Deal
Sat, Jul 27 - Wed, Jul 31

Flights from George Bush Intcntl to Porto - Travel Insights & Trends

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

Which airlines provide the cheapest flights from Houston George Bush Airport to Porto?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Houston George Bush Airport to Porto found by KAYAK users in the last 72 hours was for $761 on Delta, followed by Iberia ($874). One-way flight deals have also been found from as low as $875 on United Airlines and from $1,232 on Lufthansa.

Good to know

Low season

April

High season

November

Cheapest flight

$356
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 28% lower on average.
Flight from Houston George Bush Airport to Porto

When to book flights from George Bush Intcntl to Porto

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to Porto 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 Porto flights

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

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Porto was $356 for a one-way ticket and $758 for a round-trip.

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

    A passport is required to fly from Houston George Bush Airport to Porto.

  • Which airports will I be using when flying from Houston George Bush Airport to Porto?

    Houston George Bush Airport and Porto are both served by 1 main airport. You will leave Houston George Bush Airport from Houston George Bush Intcntl and will be arriving at Porto.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Houston to Porto are Delta and KLM. With an average price for the route of $904 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,164 and an overall rating of 7.8.

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

    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 Porto.

  • 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 Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto 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 Porto?

    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 Porto with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and OPO 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 Porto?

    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 Porto from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from George Bush Intcntl to Porto

 
See real verified KAYAK customer reviews for airlines flying from Houston to Porto. 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 Porto? 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.
8.0
DeltaOverall score based on 10706 reviews
7.9Comfort
8.6Crew
8.0Entertainment
7.4Food
8.2Boarding
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Seats are fair enough for medium tall people. Good food all the trip. Fight attendances are warm

The food was ok. The crew seemed like they were cranky. I had one guy get mad at me for passing in between the storage area to get to the other toilet. I can understand if it's not allowed but reprimanding me like I'm a student saying "This is the last time!" was not appropriate. During my meal time, there was a French family around me. No problems there but when we usually have meals, they are supposed to put their chair in the upright position. These people did not do it and the steward did not tell them to raise their seat in the upright position. However, I was told to do so! So, me and another person next to me had to eat with the monitor almost touching our faces. Furthermore, a lady in front of me was putting her feet up and preventing another elder passenger from putting her seat back. To make it worse, she was continuously hitting her back into her seat, shaking my monitor while I was watching a movie. A crew member did speak to her about it but then she accused me of pushing her seat forward! The crew member gave me a death stare and told me to stop pushing the seat forward. I did not even touch her seat at all, if I did, she would know it. Her boyfriend also stood up and tried to push her seat even further past the maximum decline to no avail. None of these people were reprimanded but the steward, some bald guy, was extremely friendly with them and did not even try to instruct them to do anything until it was time to land. I resisted the urge to really argue with them because I would have obviously been seen as the aggressor (I have no idea why). I hardly said anything on this flight except "more wine please" and "sorry" if I bumped into someone accidentally. Overall, it was an annoying flight and I had to resist the urge to yell at the steward and the people he was overly friendly with. The happiest moment of this flight was leaving it.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

One of the vstewardeses wanted to bump me of the plane for absolutely nothing. There is CCTV in the plane ans everything can be verified. Very disappointing , you all will see, o other 5 years and the passangers who does not smile to flight attendent will be bumped off...

The worst airline. Cancelled flight 30 min before boarding and rebooked on flight after 3 days.

It was nice to be on a legacy airline, people try at least.

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

I requested wheel chair assistance , it was confirmed via email that inwoood get it but I didn’t get it . The last leg of my trip to Nigeria was the worst.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

Well, in my case; the flight was delayed 1 hour, we have to wait in the plane to get green light. And the plane (probably because was a short trip) did not have entertainment or WiFi. No a good experience.

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

I liked everything about the flight. The service was excellent!

Delayed a day due to snow storm. Was upgraded. That kind of made up for significant delays from FLL to COS with no compensation or acknowledgement.

The Polaris experience is top notch. From departure lounge to arrival lounge. Everything was top notch. One of the best first class experience

The leg space between me and the seat in front of me was excellent.

Over two hours wait to get wheelchair assistance from arrival to the departure gate for LA was unreasonable even though there appreared to be heavy demand.

The seats were uncomfortable. The flight was almost 9 hours and they didn’t serve lunch

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Good food, prompt and timely flight, good on-board personnel

Original flight was cancelled - After waiting 2 hours for new take-off times. Then had to stand in line for 3 hours, ending at 2:30 am - to be told, " No hotel rooms anywhere in Dallas". No way for me to get any rest at DFW at that time of night.

Thankful for 2-4-2 economy seating. Food was ok. Free beer & wine in economy was nice. Served hot dinner, mud- flight snack and pre-arrival ham sandwich. Seat with pillow & blanket. Reasonable movie options. Overall, a good experience. IBERIA APP is terrible terrible terrible.... needs to get upgraded to equivalent of TAP Airlines App. No option to bid or request an upgrade. Very disappointing.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

I’m hoping for WiFi included. Everything else was very good

All corners have been cut and it’s a cheap experience that no longer is distinguished from most other cheap airlines

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

Appalling! The flight was delayed by 3.5 hours and the American Airlines staff at the airport where nit very helpful. Once boarded, the flight crew were unhelpful, the food was poor and the aircraft was tatty.

Everything could be better. The plain was in Orlando for 3 hours prior to boarding. After boarding all the passengers they found out that plane has a mechanical problem. After an hour the problem was solved, the pilot comes on and states, (We have to go back to the gate and take on more fuel!) Are you kidding me???? Who they have for pilots, Boy scouts?? I barely made my connecting flight to Vienna, but my suitcase did not. I'm still waiting for it, in Gyor, Hungary. Am I having fun yet?? Other passenger were in the same binned. I travelled all over the world both for business and pleasure with all types of airlines. By far of all the carriers I travelled with, Discover is the worst. I'm contemplating to bight the bullet and go back to the US with a different carrier. For International flights, the seats are made for little people. The person in front of me had his seat reclined the whole way, I felt like he was sitting in my lap. For closing, I would not let my dog travel with Discover, yet alone recommend it to an other person. Does it sound like I'm frustrated, Think about having to travel back to the US with them. I'm sure I'll not hear back from you, because nobody wants to hear about bad news, but with all the hype Discover puts out there about their services, nothing could be further from the truth. Joseph A. Nagy

Only problem we experienced was not anything to do with Lufthansa. When changing planes in Frankfurt we spent over an hour on passport control line. Lufthansa did a marvelous job on everything from keeping me informed via texts, to terrific cabin crew.

Bordón could be bettet if the company say before boarding the order of the different groups.

Checked in is easy and it was a smooth flight from LAX to Munich

There is no recline on flight from DFW to FRA. Middle eastern airways provide better recline option for the same class. FRA to Bangalore has better recline option. I bid 100$ for premium economy, my request was declined. But staff handled it without issues.

The Lufthansa part was wonderful. The short connection flight was not.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

It was a busy flight and all the crew were very helpful and gracious

Book cheap flights from Houston to Porto

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Houston to Porto found on KAYAK in the last 72 hours.
9/24Tue
1 stop
25h 24mIAH-OPO
$356
6/20Thu
3 stops
49h 16mIAH-OPO
$512
9/24Tue
2 stops
16h 09mIAH-OPO
$518
9/24Tue
3 stops
32h 23mIAH-OPO
$521
6/20Thu
2 stops
40h 01mIAH-OPO
$539
6/9Sun
2 stops
50h 50mIAH-OPO
$549
6/9Sun
3 stops
51h 11mIAH-OPO
$563
6/9Sun
1 stopUnited Airlines
13h 55mIAH-OPO
$875
6/20Thu
1 stopUnited Airlines
13h 55mIAH-OPO
$975
5/31Fri
1 stopLufthansa
13h 45mIAH-OPO
$1,232

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Houston George Bush Airport - Porto Flights

Departure:

Houston George Bush Airport (undefined)United States

Destination:

Porto (OPO)Portugal

Return flight deals:

Porto - Houston George Bush Airport

Cabin classes:

Browse destinations: