$325+ Cheap flights from George Bush Intcntl (IAH) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — OPO
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from George Bush Intcntl to Porto with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from George Bush Intcntl to Porto
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Last-minute
One-way
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 October 26, 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 October 26, 2026.
This KLM deal was found by Cheapflights users on 10/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:10 pm -
1 stop20h 50m
Mon 12/74:10 pm -
1 stop26h 55m
Deal found 10/24![KLM logo]()
$745
This Air France deal was found by Cheapflights users on 10/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:35 am -
2 stops17h 00m
Mon 12/74:10 pm -
1 stop26h 55m
Deal found 10/24![Multiple Airlines logo]()
$750
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 12/97:33 am -
1 stop19h 57m
Wed 12/166:00 am -
2 stops20h 54m
Deal found 10/25![United Airlines logo]()
$759
This Delta deal was found by Cheapflights users on 10/22. 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 10/288:10 pm -
1 stop20h 50m
Thu 11/55:00 am -
1 stop14h 10m
Deal found 10/22![Delta logo]()
$795
This KLM deal was found by Cheapflights users on 10/21. 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.
Wed 10/288:10 pm -
1 stop20h 50m
Thu 11/55:00 am -
1 stop14h 10m
Deal found 10/21![KLM logo]()
$805
This Air France deal was found by Cheapflights users on 10/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:03 pm -
2 stops16h 32m
Wed 11/115:00 am -
2 stops18h 25m
Deal found 10/24![Multiple Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:52 pm -
2 stops29h 38m
Wed 11/116:00 am -
2 stops22h 54m
Deal found 10/21![United Airlines logo]()
$814
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 October 26, 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 October 26, 2026.
This Delta deal was found by Cheapflights users on 10/23. 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.
Tue 4/135:05 pm -
1 stop16h 20m
Fri 4/235:00 am -
1 stop14h 15m
Deal found 10/23![Delta logo]()
$702
This KLM deal was found by Cheapflights users on 10/26. 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.
Tue 4/135:05 pm -
1 stop16h 20m
Fri 4/235:00 am -
1 stop14h 15m
Deal found 10/26![KLM logo]()
$702
This KLM deal was found by Cheapflights users on 10/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:10 pm -
1 stop20h 50m
Mon 12/74:10 pm -
1 stop26h 55m
Deal found 10/24![KLM logo]()
$745
This Delta deal was found by Cheapflights users on 10/23. 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.
Tue 4/135:05 pm -
1 stop16h 20m
Sun 4/185:00 am -
1 stop14h 15m
Deal found 10/23![Delta logo]()
$752
This Delta deal was found by Cheapflights users on 10/22. 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 1/2711:50 am -
2 stops16h 45m
Sat 2/135:00 am -
1 stop14h 05m
Deal found 10/22![Delta logo]()
$767
This KLM deal was found by Cheapflights users on 10/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/56:25 pm -
2 stops15h 05m
Mon 4/126:55 pm -
1 stop24h 20m
Deal found 10/24![KLM logo]()
$783
Last-minute flights from George Bush Intcntl to PortoDiscover last-minute flight deals from George Bush Intcntl to Porto. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from George Bush Intcntl to Porto. Data last updated October 26, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/22. 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 10/288:10 pm -
1 stop20h 50m
Thu 11/55:00 am -
1 stop14h 10m
Deal found 10/22![Delta logo]()
$795
This KLM deal was found by Cheapflights users on 10/21. 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.
Wed 10/288:10 pm -
1 stop20h 50m
Thu 11/55:00 am -
1 stop14h 10m
Deal found 10/21![KLM logo]()
$805
This Air France deal was found by Cheapflights users on 10/21. 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 10/282:22 pm -
2 stops15h 13m
Thu 11/55:00 am -
2 stops18h 50m
Deal found 10/21![Multiple Airlines logo]()
$819
This Air France deal was found by Cheapflights users on 10/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:03 pm -
2 stops16h 32m
Wed 11/115:00 am -
2 stops18h 25m
Deal found 10/24![Multiple Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:52 pm -
2 stops29h 38m
Wed 11/116:00 am -
2 stops22h 54m
Deal found 10/21![United Airlines logo]()
$814
This KLM deal was found by Cheapflights users on 10/23. 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.
Fri 11/67:10 pm -
1 stop20h 50m
Mon 11/94:10 pm -
1 stop26h 55m
Deal found 10/23![KLM logo]()
$845
This KLM deal was found by Cheapflights users on 10/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:10 pm -
1 stop20h 50m
Mon 12/74:10 pm -
1 stop26h 55m
Deal found 10/24![KLM logo]()
$745
This Air France deal was found by Cheapflights users on 10/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:35 am -
2 stops17h 00m
Mon 12/74:10 pm -
1 stop26h 55m
Deal found 10/24![Multiple Airlines logo]()
$750
This Travelocity deal was found by Cheapflights users on 10/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:50 am -
2 stops41h 25m
Mon 11/3012:05 pm -
2 stops39h 29m
Deal found 10/24![Multiple Airlines logo]()
$856
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 October 26, 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 October 26, 2026.
This Expedia deal was found by Cheapflights users on 10/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1511:55 am -
2 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$325
This Air France deal was found by Cheapflights users on 10/25. 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.
Mon 3/158:10 pm -
1 stop20h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Air France logo]()
$328
This KLM deal was found by Cheapflights users on 10/25. 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 12/307:10 pm -
1 stop20h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![KLM logo]()
$557
This Cathay Pacific deal was found by Cheapflights users on 10/25. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/307:08 am -
3 stops46h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$8,494
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $697 (Expedia) |
One-way from | $325 (Expedia) |
Popular in | February |
Cheapest in | March |
Average price | $1,077 |
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 7,457,451 searches. Data last updated October 26, 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
Quickest round-trip
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Mon 3/15
8:10 pm-10:00 pm
1 stop20h 50m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$328
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Mon 3/15
3:30 pm-6:45 pm
3 stops22h 15m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$427
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Wed 12/30
7:10 pm-10:00 pm
1 stop20h 50m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$557
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Tue 4/13
5:05 pm-3:25 pm
1 stop16h 20m
Porto
Fri 4/23
5:00 am-1:15 pm
1 stop14h 15m
$702
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Tue 4/13
5:05 pm-3:25 pm
1 stop16h 20m
Porto
Fri 4/23
5:00 am-1:15 pm
1 stop14h 15m
$702
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Mon 11/23
7:10 pm-10:00 pm
1 stop20h 50m
Porto
Mon 12/7
4:10 pm-1:05 pm
1 stop26h 55m
$745
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Tue 4/13
5:05 pm-3:25 pm
1 stop16h 20m
Porto
Sun 4/18
5:00 am-1:15 pm
1 stop14h 15m
$752
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Wed 1/27
11:50 am-10:35 am
2 stops16h 45m
Porto
Sat 2/13
5:00 am-1:05 pm
1 stop14h 05m
$767
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Mon 4/5
6:25 pm-3:30 pm
2 stops15h 05m
Porto
Mon 4/12
6:55 pm-1:15 pm
1 stop24h 20m
$783
HoustonPorto
IAH Houston George Bush Intcntl - OPO Porto
IAHOPO
Houston George Bush Intcntl
Wed 12/30
7:08 am-11:45 am
3 stops46h 37m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$8,494
Sorted 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | 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 October 26, 2026.
Read reviews from past customers who have flown KLM and United Airlines 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.
Overall
7.8
Entertainment
7.2
Comfort
7.7
Crew
8.4
Boarding
7.8
Food
7.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Overall
7.8
Entertainment
7.2
Comfort
7.7
Crew
8.4
Boarding
7.8
Food
7.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Overall
7.8
Entertainment
7.2
Comfort
7.7
Crew
8.4
Boarding
7.8
Food
7.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Related info for your journey
Find useful and relevant information for your journey from George Bush Intcntl to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
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Coimbra
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George Bush Intcntl and Porto flights
Browse other George Bush Intcntl and Porto flight options. Last updated on October 26, 2026.
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Browse through other flights departing from George Bush Intcntl. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
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Top 2 airlines flying from George Bush Intcntl to Porto
Discover the top 2 airlines that operate flights from George Bush Intcntl to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$476 | Average$872 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$695 | Average$1,232 | FlexibilityNo cancel fee | On-time69% |