$390+ Cheap flights from George Bush Intcntl (IAH) to Porto (OPO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — OPO
May 24 — May 311
Round-trip
1 adult, Economy
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Cheapest flights from George Bush Intcntl to PortoExplore the most affordable flight options available from George Bush Intcntl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.
Explore the most affordable flight options available from George Bush Intcntl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/272:30 pm
IAH
- OPO
1 stop19h 20m
Turkish Airlines
Tue 5/124:50 pm
OPO
- IAH
1 stop32h 20m
Turkish Airlines
Deal found 4/20![Turkish Airlines logo]()
$719
This Air France deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:55 pm
IAH
- OPO
1 stop17h 30m
Multiple Airlines
Wed 10/2811:15 am
OPO
- IAH
1 stop32h 15m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$766
This American Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:50 pm
IAH
- OPO
2 stops15h 10m
American Airlines
Wed 10/288:40 pm
OPO
- IAH
2 stops21h 39m
American Airlines
Deal found 4/21![American Airlines logo]()
$787
This oojo deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:05 pm
IAH
- OPO
1 stop20h 25m
Turkish Airlines
Thu 9/244:40 pm
OPO
- IAH
1 stop26h 05m
Turkish Airlines
Deal found 4/24![Turkish Airlines logo]()
$789
This Turkish Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:30 pm
IAH
- OPO
1 stop19h 10m
Turkish Airlines
Sat 9/510:45 am
OPO
- IAH
1 stop38h 25m
Turkish Airlines
Deal found 4/19![Turkish Airlines logo]()
$812
This Gotogate deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:50 pm
IAH
- OPO
2 stops42h 45m
British Airways
Thu 10/228:20 am
OPO
- IAH
2 stops21h 39m
British Airways
Deal found 4/22![British Airways logo]()
$814
This KLM deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:55 pm
IAH
- OPO
1 stop15h 35m
KLM
Mon 10/194:20 pm
OPO
- IAH
1 stop26h 55m
KLM
Deal found 4/20![KLM logo]()
$816
This KLM deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:15 pm
IAH
- OPO
2 stops15h 05m
KLM
Thu 10/227:10 pm
OPO
- IAH
1 stop24h 05m
KLM
Deal found 4/21![KLM logo]()
$821
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:25 pm
IAH
- OPO
2 stops20h 45m
Delta
Tue 10/205:00 am
OPO
- IAH
1 stop14h 15m
Delta
Deal found 4/21![Delta logo]()
$825
Best flights from George Bush Intcntl to PortoDiscover carefully curated flight deals from George Bush Intcntl to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2026.
Discover carefully curated flight deals from George Bush Intcntl to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2026.
This Turkish Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:30 pm
IAH
- OPO
1 stop19h 10m
Turkish Airlines
Sat 9/510:45 am
OPO
- IAH
1 stop38h 25m
Turkish Airlines
Deal found 4/19![Turkish Airlines logo]()
$812
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:55 pm
IAH
- OPO
2 stops20h 30m
Delta
Wed 10/215:00 am
OPO
- IAH
2 stops19h 17m
Delta
Deal found 4/21![Delta logo]()
$831
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:50 pm
IAH
- OPO
1 stop12h 55m
United Airlines
Thu 10/2212:35 pm
OPO
- IAH
1 stop14h 13m
United Airlines
Deal found 4/20![United Airlines logo]()
$833
This Lufthansa deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:35 pm
IAH
- OPO
1 stop19h 15m
Lufthansa
Mon 5/1112:10 pm
OPO
- IAH
1 stop31h 25m
Lufthansa
Deal found 4/23![Lufthansa logo]()
$892
This KLM deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/73:50 pm
IAH
- OPO
1 stop17h 35m
KLM
Mon 5/114:20 pm
OPO
- IAH
1 stop27h 00m
KLM
Deal found 4/23![KLM logo]()
$964
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:00 am
IAH
- OPO
1 stop15h 00m
United Airlines
Thu 9/2411:50 am
OPO
- IAH
2 stops31h 30m
United Airlines
Deal found 4/22![United Airlines logo]()
$953
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:38 pm
IAH
- OPO
1 stop33h 52m
Delta
Thu 7/235:55 am
OPO
- IAH
1 stop14h 55m
Delta
Deal found 4/21![Delta logo]()
$1,026
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:23 am
IAH
- OPO
2 stops17h 37m
United Airlines
Sat 9/59:00 am
OPO
- IAH
1 stop13h 45m
United Airlines
Deal found 4/19![United Airlines logo]()
$962
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:45 pm
IAH
- OPO
2 stops18h 40m
Delta
Mon 5/115:00 am
OPO
- IAH
2 stops21h 00m
Delta
Deal found 4/23![Delta logo]()
$1,038
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:35 am
IAH
- OPO
2 stops21h 40m
United Airlines
Mon 5/1112:10 pm
OPO
- IAH
1 stop35h 50m
United Airlines
Deal found 4/23![United Airlines logo]()
$1,004
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:32 am
IAH
- OPO
2 stops16h 58m
Delta
Thu 7/305:55 am
OPO
- IAH
1 stop14h 55m
Delta
Deal found 4/22![Delta logo]()
$1,081
Last-minute flights from George Bush Intcntl to PortoDiscover last-minute flight deals from George Bush Intcntl to Porto. Data last updated April 24, 2026 and is based on user searches.
Discover last-minute flight deals from George Bush Intcntl to Porto. Data last updated April 24, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:35 pm
IAH
- OPO
1 stop13h 40m
Multiple Airlines
Thu 4/306:00 am
OPO
- IAH
2 stops21h 36m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$908
This KLM deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:50 pm
IAH
- OPO
1 stop17h 35m
KLM
Thu 4/307:10 pm
OPO
- IAH
1 stop24h 10m
KLM
Deal found 4/22![KLM logo]()
$910
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/272:30 pm
IAH
- OPO
1 stop19h 20m
Turkish Airlines
Tue 5/124:50 pm
OPO
- IAH
1 stop32h 20m
Turkish Airlines
Deal found 4/20![Turkish Airlines logo]()
$719
This Mytrip deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/272:30 pm
IAH
- OPO
2 stops24h 50m
Multiple Airlines
Tue 5/1210:00 pm
OPO
- IAH
2 stops27h 10m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$853
This Delta deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:50 pm
IAH
- OPO
1 stop17h 35m
Delta
Tue 5/125:00 am
OPO
- IAH
1 stop14h 20m
Delta
Deal found 4/21![Delta logo]()
$914
This KLM deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:50 pm
IAH
- OPO
1 stop17h 35m
KLM
Mon 5/411:25 am
OPO
- IAH
1 stop31h 55m
KLM
Deal found 4/23![KLM logo]()
$860
This Orbitz deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:17 am
IAH
- OPO
2 stops22h 28m
Iberia
Mon 5/48:40 pm
OPO
- IAH
2 stops33h 09m
Iberia
Deal found 4/23![Iberia logo]()
$892
This KLM deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:50 pm
IAH
- OPO
1 stop17h 35m
KLM
Sun 5/105:55 am
OPO
- IAH
1 stop13h 40m
KLM
Deal found 4/23![KLM logo]()
$917
One-way flights from George Bush Intcntl to PortoSearch for one-way flight options from George Bush Intcntl to Porto. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
Search for one-way flight options from George Bush Intcntl to Porto. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
This KLM deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:55 pm
IAH
- OPO
1 stop17h 30m
KLM
Deal found 4/20![KLM logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:50 am
IAH
- OPO
3 stops52h 55m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:55 pm
IAH
- OPO
2 stops20h 35m
Delta
Deal found 4/20![Delta logo]()
$395
This Booking.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:25 pm
IAH
- OPO
2 stops54h 35m
Air Canada
Deal found 4/20![Air Canada logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:07 pm
IAH
- OPO
3 stops54h 48m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$430
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:10 am
IAH
- OPO
3 stops45h 05m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:35 pm
IAH
- OPO
2 stops46h 40m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$446
This KLM deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:15 pm
IAH
- OPO
2 stops15h 15m
KLM
Deal found 4/20![KLM logo]()
$450
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:55 pm
IAH
- OPO
2 stops20h 30m
Delta
Deal found 4/20![Delta logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:29 pm
IAH
- OPO
3 stops46h 31m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$456
Find flight deals from George Bush Intcntl to Porto
Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $712 (Turkish Airlines) |
One-way from | $390 (KLM) |
Popular in | December |
Cheapest in | November |
Average price | $897 |
Cheapflights Fare Finder
Customize your flight search to find flights from George Bush Intcntl to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 24, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 8/21
2:30 pm-3:40 pm
1 stop19h 10m
Porto
Sat 9/5
10:45 am-7:10 pm
1 stop38h 25m
$812
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sat 10/17
12:55 pm-3:25 pm
2 stops20h 30m
Porto
Wed 10/21
5:00 am-6:17 pm
2 stops19h 17m
$831
Quickest round-trip
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sat 10/17
2:50 pm-9:45 am
1 stop12h 55m
Porto
Thu 10/22
12:35 pm-8:48 pm
1 stop14h 13m
$833
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Wed 5/6
3:35 pm-4:50 pm
1 stop19h 15m
Porto
Mon 5/11
12:10 pm-1:35 pm
1 stop31h 25m
$892
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Tue 9/15
10:00 am-7:00 am
1 stop15h 00m
Porto
Thu 9/24
11:50 am-1:20 pm
2 stops31h 30m
$953
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 8/21
7:23 am-7:00 am
2 stops17h 37m
Porto
Sat 9/5
9:00 am-4:45 pm
1 stop13h 45m
$962
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Thu 5/7
3:50 pm-3:25 pm
1 stop17h 35m
Porto
Mon 5/11
4:20 pm-1:20 pm
1 stop27h 00m
$964
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Thu 5/7
7:35 am-11:15 am
2 stops21h 40m
Porto
Mon 5/11
12:10 pm-6:00 pm
1 stop35h 50m
$1,004
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sun 7/5
6:38 pm-10:30 am
1 stop33h 52m
Porto
Thu 7/23
5:55 am-2:50 pm
1 stop14h 55m
$1,026
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Thu 5/7
2:45 pm-3:25 pm
2 stops18h 40m
Porto
Mon 5/11
5:00 am-8:00 pm
2 stops21h 00m
$1,038
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from George Bush Intcntl to Porto
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to Porto in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston George Bush Intcntl Airport-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from George Bush Intcntl to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from George Bush Intcntl with our price prediction graph.
IAH-OPO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Houston George Bush Intcntl Airport to Porto
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated April 24, 2026.
Read reviews from past customers who have flown KLM,United Airlines, andLufthansa from Houston George Bush Intcntl Airport to Porto. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
Crew
8.4
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2026
EZE - SCL
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$476 | Average$755 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$641 | Average$951 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$831 | Average$1,404 | FlexibilityNo cancel fee | On-time76% |