$462+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — OPO
يوليو 9 — يوليو 161
Round-trip
1 adult, Economy
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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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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 يونيو 9, 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 يونيو 9, 2026.
This United Airlines deal was found by Cheapflights users on 6/6. 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.
ن 11/162:30 pm
IAH
- OPO
1 stop13h 00m
United Airlines
خ 11/196:00 am
OPO
- IAH
1 stop18h 15m
United Airlines
Deal found 6/6![United Airlines logo]()
$707
This Air France deal was found by Cheapflights users on 6/9. 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.
ح 11/84:05 pm
IAH
- OPO
1 stop12h 25m
Multiple Airlines
ن 11/164:10 pm
OPO
- IAH
1 stop26h 55m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$709
This Delta deal was found by Cheapflights users on 6/7. 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.
ن 10/269:40 am
IAH
- OPO
2 stops19h 50m
Delta
ث 11/35:00 am
OPO
- IAH
1 stop14h 05m
Delta
Deal found 6/7![Delta logo]()
$714
This Expedia deal was found by Cheapflights users on 6/6. 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.
ن 11/1612:10 pm
IAH
- OPO
2 stops18h 40m
Multiple Airlines
خ 11/197:20 pm
OPO
- IAH
2 stops32h 19m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$719
This Delta deal was found by Cheapflights users on 6/8. 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.
ر 12/211:50 am
IAH
- OPO
2 stops16h 40m
Delta
ث 12/85:00 am
OPO
- IAH
2 stops19h 28m
Delta
Deal found 6/8![Delta logo]()
$723
This American Airlines deal was found by Cheapflights users on 6/7. 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.
ن 10/2610:45 pm
IAH
- OPO
2 stops16h 15m
Multiple Airlines
ث 11/312:25 pm
OPO
- IAH
2 stops18h 05m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$729
This Expedia deal was found by Cheapflights users on 6/4. 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.
ث 11/310:41 am
IAH
- OPO
2 stops14h 59m
Iberia
ن 11/99:55 pm
OPO
- IAH
2 stops28h 05m
Iberia
Deal found 6/4![Iberia logo]()
$741
This KLM deal was found by Cheapflights users on 6/8. 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.
ح 11/84:05 pm
IAH
- OPO
1 stop12h 25m
KLM
س 11/144:10 pm
OPO
- IAH
1 stop27h 15m
KLM
Deal found 6/8![KLM logo]()
$759
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 يونيو 9, 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 يونيو 9, 2026.
This KLM deal was found by Cheapflights users on 6/8. 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.
ح 11/84:05 pm
IAH
- OPO
1 stop12h 25m
KLM
س 11/145:00 am
OPO
- IAH
1 stop14h 05m
KLM
Deal found 6/8![KLM logo]()
$759
This United Airlines deal was found by Cheapflights users on 6/7. 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.
ن 10/127:50 pm
IAH
- OPO
2 stops29h 10m
United Airlines
ر 10/2111:20 am
OPO
- IAH
2 stops30h 21m
United Airlines
Deal found 6/7![United Airlines logo]()
$766
This Air France deal was found by Cheapflights users on 6/8. 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.
ح 11/81:15 pm
IAH
- OPO
2 stops15h 15m
Multiple Airlines
س 11/149:25 am
OPO
- IAH
2 stops18h 39m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$773
This United Airlines deal was found by Cheapflights users on 6/4. 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.
ج 10/1610:00 am
IAH
- OPO
1 stop15h 10m
United Airlines
ر 10/2111:20 am
OPO
- IAH
2 stops30h 21m
United Airlines
Deal found 6/4![United Airlines logo]()
$811
This KLM deal was found by Cheapflights users on 6/6. 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.
ح 8/93:55 pm
IAH
- OPO
1 stop17h 35m
KLM
ر 8/1911:45 am
OPO
- IAH
1 stop31h 35m
KLM
Deal found 6/6![KLM logo]()
$867
This United Airlines deal was found by Cheapflights users on 6/4. 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.
ج 10/1610:00 am
IAH
- OPO
1 stop15h 10m
United Airlines
ث 10/2011:15 am
OPO
- IAH
2 stops32h 13m
United Airlines
Deal found 6/4![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 6/8. 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.
ث 9/157:00 am
IAH
- OPO
2 stops18h 00m
United Airlines
خ 9/246:00 am
OPO
- IAH
2 stops19h 02m
United Airlines
Deal found 6/8![United Airlines logo]()
$907
This United Airlines deal was found by Cheapflights users on 6/8. 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.
ر 9/210:00 am
IAH
- OPO
1 stop15h 00m
United Airlines
ر 9/1611:20 am
OPO
- IAH
2 stops33h 57m
United Airlines
Deal found 6/8![United Airlines logo]()
$913
Last-minute flights from George Bush Intcntl to PortoDiscover last-minute flight deals from George Bush Intcntl to Porto. Data last updated يونيو 9, 2026 and is based on user searches.
Discover last-minute flight deals from George Bush Intcntl to Porto. Data last updated يونيو 9, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/4. 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.
ح 7/510:08 pm
IAH
- OPO
2 stops26h 52m
United Airlines
ث 7/1412:15 pm
OPO
- IAH
2 stops29h 36m
United Airlines
Deal found 6/4![United Airlines logo]()
$918
This Gotogate deal was found by Cheapflights users on 6/5. 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.
ن 7/610:00 am
IAH
- OPO
1 stop15h 00m
Air Canada
ر 7/226:20 am
OPO
- IAH
2 stops21h 46m
Air Canada
Deal found 6/5![Air Canada logo]()
$924
This Delta deal was found by Cheapflights users on 6/8. 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.
ن 7/65:05 pm
IAH
- OPO
1 stop23h 10m
Delta
ث 7/285:00 am
OPO
- IAH
2 stops22h 44m
Delta
Deal found 6/8![Delta logo]()
$927
This Delta deal was found by Cheapflights users on 6/8. 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.
ن 7/65:05 pm
IAH
- OPO
1 stop23h 10m
Delta
ج 7/3112:45 pm
OPO
- IAH
2 stops28h 26m
Delta
Deal found 6/8![Delta logo]()
$939
This Air Canada deal was found by Cheapflights users on 6/8. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ن 7/610:00 am
IAH
- OPO
1 stop15h 00m
Air Canada
ر 7/2911:20 am
OPO
- IAH
1 stop14h 18m
Air Canada
Deal found 6/8![Air Canada logo]()
$977
This Air Canada deal was found by Cheapflights users on 6/8. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ث 7/711:45 am
IAH
- OPO
2 stops37h 15m
Air Canada
ر 7/2911:20 am
OPO
- IAH
1 stop14h 18m
Air Canada
Deal found 6/8![Air Canada logo]()
$935
This Delta deal was found by Cheapflights users on 6/8. 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.
ث 7/75:20 pm
IAH
- OPO
2 stops16h 05m
Delta
ج 7/3112:45 pm
OPO
- IAH
2 stops25h 52m
Delta
Deal found 6/8![Delta logo]()
$943
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 يونيو 9, 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 يونيو 9, 2026.
This United Airlines deal was found by Cheapflights users on 6/8. 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.
ث 9/1510:00 am
IAH
- OPO
1 stop15h 00m
United Airlines
Deal found 6/8![United Airlines logo]()
$462
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
ر 7/17:24 pm
IAH
- OPO
3 stops44h 41m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$512
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
ن 6/158:55 pm
IAH
- OPO
3 stops44h 05m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$539
This Cheapflightsfares deal was found by Cheapflights users on 6/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ن 6/159:00 pm
IAH
- OPO
1 stop17h 05m
British Airways
Deal found 6/4![British Airways logo]()
$827
This Justfly.com deal was found by Cheapflights users on 6/4. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
س 6/2011:51 am
IAH
- OPO
2 stops25h 09m
TAP AIR PORTUGAL
Deal found 6/4![TAP AIR PORTUGAL logo]()
$829
This Trip.com deal was found by Cheapflights users on 6/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ح 6/143:35 pm
IAH
- OPO
1 stop25h 20m
Lufthansa
Deal found 6/8![Lufthansa logo]()
$841
This United Airlines deal was found by Cheapflights users on 6/8. 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.
س 6/2011:55 am
IAH
- OPO
2 stops36h 55m
United Airlines
Deal found 6/8![United Airlines logo]()
$851
This Delta deal was found by Cheapflights users on 6/8. 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.
ح 6/143:25 pm
IAH
- OPO
2 stops18h 05m
Delta
Deal found 6/8![Delta logo]()
$857
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 يونيو 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $707 (United Airlines) |
One-way from | $462 (United Airlines) |
Popular in | December |
Cheapest in | March |
Average price | $1,269 |
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 يونيو 9, 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 - OPO
IAHOPO
Houston George Bush Intcntl
ح 11/8
4:05 pm-10:30 am
1 stop12h 25m
Porto
س 11/14
5:00 am-1:05 pm
1 stop14h 05m
$759
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ن 10/12
7:50 pm-7:00 am
2 stops29h 10m
Porto
ر 10/21
11:20 am-11:41 am
2 stops30h 21m
$766
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ح 11/8
1:15 pm-10:30 am
2 stops15h 15m
Porto
س 11/14
9:25 am-10:04 pm
2 stops18h 39m
$773
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ج 10/16
10:00 am-7:10 am
1 stop15h 10m
Porto
ر 10/21
11:20 am-11:41 am
2 stops30h 21m
$811
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ج 10/16
10:00 am-7:10 am
1 stop15h 10m
Porto
ث 10/20
11:15 am-1:28 pm
2 stops32h 13m
$811
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ح 8/9
3:55 pm-3:30 pm
1 stop17h 35m
Porto
ر 8/19
11:45 am-1:20 pm
1 stop31h 35m
$867
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ث 9/15
7:00 am-7:00 am
2 stops18h 00m
Porto
خ 9/24
6:00 am-7:02 pm
2 stops19h 02m
$907
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ر 9/2
10:00 am-7:00 am
1 stop15h 00m
Porto
ر 9/16
11:20 am-3:17 pm
2 stops33h 57m
$913
Cheapest one-way
Quickest one-way
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ث 9/15
10:00 am-7:00 am
1 stop15h 00m
$462
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
ر 7/1
7:24 pm-10:05 pm
3 stops44h 41m
$512
Showing 1-10 of 14 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 June.
| 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 يونيو 9, 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.
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Overall
7.8
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
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
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Other flights from George Bush Intcntl
Browse through other flights departing from George Bush Intcntl. Flights are based on user searches made on Cheapflights and were last updated on يونيو 9, 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 2,558,603 searches. Data last updated يونيو 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$476 | Average$755 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$661 | Average$1,158 | FlexibilityNo cancel fee | On-time69% |