$341+ Cheap flights from Houston to Portugal
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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
Jul 19 — Jul 261
Round-trip
1 adult, Economy
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Find cheap flights from Houston to Portugal with Cheapflights
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Cheapest flights from Houston to PortugalExplore the most affordable flight options available from Houston to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.
Explore the most affordable flight options available from Houston to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.
This Gotogate deal was found by Cheapflights users on 6/18. 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.
Tue 11/312:10 pm
IAH
- LIS
1 stop15h 40m
Multiple Airlines
Wed 11/185:00 am
LIS
- IAH
1 stop15h 00m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$708
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Sun 12/611:00 am
IAH
- OPO
1 stop16h 30m
United Airlines
Thu 12/106:00 am
OPO
- IAH
2 stops22h 30m
United Airlines
Deal found 6/18![United Airlines logo]()
$718
This United Airlines deal was found by Cheapflights users on 6/18. 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 11/1811:55 am
IAH
- LIS
1 stop16h 25m
United Airlines
Fri 11/275:00 am
LIS
- IAH
1 stop15h 00m
United Airlines
Deal found 6/18![United Airlines logo]()
$724
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Sun 11/89:28 am
IAH
- OPO
2 stops16h 12m
American Airlines
Fri 11/1312:25 pm
OPO
- IAH
2 stops18h 05m
American Airlines
Deal found 6/17![American Airlines logo]()
$730
This Booking.com deal was found by Cheapflights users on 6/18. 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.
Tue 11/36:10 pm
IAH
- LIS
2 stops34h 50m
Air Canada
Wed 11/185:00 am
LIS
- IAH
2 stops18h 08m
Air Canada
Deal found 6/18![Air Canada logo]()
$736
This Air Canada deal was found by Cheapflights users on 6/18. 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.
Wed 11/1812:10 pm
IAH
- LIS
2 stops16h 50m
Air Canada
Fri 11/2711:20 am
LIS
- IAH
1 stop16h 19m
Air Canada
Deal found 6/18![Air Canada logo]()
$747
This United Airlines deal was found by Cheapflights users on 6/18. 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 11/185:05 pm
IAH
- LIS
1 stop11h 10m
United Airlines
Tue 12/15:00 am
LIS
- IAH
1 stop19h 15m
United Airlines
Deal found 6/18![United Airlines logo]()
$755
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Sun 11/228:18 pm
IAH
- LIS
1 stop29h 52m
United Airlines
Tue 12/11:00 pm
LIS
- IAH
1 stop26h 05m
United Airlines
Deal found 6/18![United Airlines logo]()
$762
This United Airlines deal was found by Cheapflights users on 6/16. 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 11/1012:10 pm
IAH
- LIS
1 stop15h 40m
United Airlines
Wed 11/185:00 am
LIS
- IAH
1 stop15h 00m
United Airlines
Deal found 6/16![United Airlines logo]()
$766
This United Airlines deal was found by Cheapflights users on 6/17. 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 11/117:40 am
IAH
- LIS
1 stop18h 30m
United Airlines
Thu 11/195:00 am
LIS
- IAH
1 stop19h 15m
United Airlines
Deal found 6/17![United Airlines logo]()
$767
This Air France deal was found by Cheapflights users on 6/17. 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 10/285:05 pm
IAH
- LIS
1 stop13h 15m
Multiple Airlines
Mon 11/211:30 am
LIS
- IAH
1 stop31h 35m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$769
This Air France deal was found by Cheapflights users on 6/17. 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 10/203:55 pm
IAH
- OPO
1 stop17h 30m
Multiple Airlines
Tue 11/35:00 am
OPO
- IAH
1 stop14h 05m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$769
Best flights from Houston to PortugalDiscover carefully curated flight deals from Houston to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 19, 2026.
Discover carefully curated flight deals from Houston to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 19, 2026.
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Mon 12/72:30 pm
IAH
- OPO
1 stop13h 00m
United Airlines
Thu 12/106:00 am
OPO
- IAH
2 stops18h 44m
United Airlines
Deal found 6/18![United Airlines logo]()
$718
This Iberia deal was found by Cheapflights users on 6/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:50 pm
IAH
- OPO
2 stops15h 10m
Multiple Airlines
Wed 10/2112:25 pm
OPO
- IAH
2 stops17h 54m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$836
This KLM deal was found by Cheapflights users on 6/16. 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 11/114:10 pm
IAH
- FNC
2 stops43h 00m
KLM
Wed 11/1810:25 am
FNC
- IAH
1 stop33h 00m
KLM
Deal found 6/16![KLM logo]()
$841
This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:45 am
IAH
- OPO
2 stops18h 40m
Delta
Tue 8/2512:25 pm
OPO
- IAH
2 stops17h 27m
Delta
Deal found 6/19![Delta logo]()
$868
This Turkish Airlines deal was found by Cheapflights users on 6/16. 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.
Thu 10/159:10 pm
IAH
- OPO
1 stop36h 30m
Turkish Airlines
Sat 10/244:40 pm
OPO
- IAH
1 stop33h 25m
Turkish Airlines
Deal found 6/16![Turkish Airlines logo]()
$897
This Virgin Atlantic deal was found by Cheapflights users on 6/14. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:50 am
HOU
- LIS
2 stops17h 55m
Virgin Atlantic
Tue 9/110:00 am
LIS
- HOU
2 stops18h 05m
Virgin Atlantic
Deal found 6/14![Virgin Atlantic logo]()
$992
This British Airways deal was found by Cheapflights users on 6/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:05 pm
IAH
- FNC
1 stop32h 15m
British Airways
Tue 8/257:35 pm
FNC
- IAH
1 stop29h 40m
British Airways
Deal found 6/15![British Airways logo]()
$1,048
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/18. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:44 am
IAH
- FNC
2 stops21h 51m
TAP AIR PORTUGAL
Sun 11/1512:50 pm
FNC
- IAH
2 stops28h 04m
TAP AIR PORTUGAL
Deal found 6/18![TAP AIR PORTUGAL logo]()
$1,145
This ITA Airways deal was found by Cheapflights users on 6/18. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/34:20 pm
IAH
- LIS
1 stop21h 30m
ITA Airways
Tue 7/288:15 pm
LIS
- IAH
1 stop25h 25m
ITA Airways
Deal found 6/18![ITA Airways logo]()
$1,300
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Sun 12/68:40 am
IAH
- OPO
2 stops18h 50m
United Airlines
Thu 12/106:00 am
OPO
- IAH
2 stops18h 44m
United Airlines
Deal found 6/18![United Airlines logo]()
$722
This Expedia deal was found by Cheapflights users on 6/14. 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.
Sat 7/1112:46 pm
HOU
- OPO
2 stops21h 14m
Iberia
Tue 7/284:40 pm
OPO
- HOU
2 stops33h 17m
Iberia
Deal found 6/14![Iberia logo]()
$1,462
This United Airlines deal was found by Cheapflights users on 6/16. 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 11/1012:10 pm
IAH
- LIS
1 stop15h 40m
United Airlines
Wed 11/185:00 am
LIS
- IAH
1 stop15h 00m
United Airlines
Deal found 6/16![United Airlines logo]()
$766
This KLM deal was found by Cheapflights users on 6/15. 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 10/163:55 pm
IAH
- OPO
1 stop17h 30m
KLM
Wed 10/2111:45 am
OPO
- IAH
1 stop31h 30m
KLM
Deal found 6/15![KLM logo]()
$868
This Turkish Airlines deal was found by Cheapflights users on 6/17. 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 8/219:10 pm
IAH
- LIS
1 stop20h 10m
Turkish Airlines
Thu 8/275:55 am
LIS
- IAH
1 stop36h 50m
Turkish Airlines
Deal found 6/17![Turkish Airlines logo]()
$923
This Delta deal was found by Cheapflights users on 6/15. 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 7/1412:55 pm
HOU
- OPO
2 stops15h 35m
Delta
Tue 7/216:15 am
OPO
- HOU
2 stops21h 36m
Delta
Deal found 6/15![Delta logo]()
$938
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Mon 12/79:45 am
IAH
- LIS
2 stops16h 25m
United Airlines
Wed 12/910:15 am
LIS
- IAH
2 stops18h 20m
United Airlines
Deal found 6/18![United Airlines logo]()
$794
This Turkish Airlines deal was found by Cheapflights users on 6/18. 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.
Sat 9/199:10 pm
IAH
- LIS
1 stop30h 40m
Turkish Airlines
Thu 9/245:05 pm
LIS
- IAH
1 stop25h 40m
Turkish Airlines
Deal found 6/18![Turkish Airlines logo]()
$923
This Delta deal was found by Cheapflights users on 6/18. 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 9/1611:00 am
HOU
- LIS
2 stops18h 15m
Delta
Tue 9/295:00 am
LIS
- HOU
2 stops17h 23m
Delta
Deal found 6/18![Delta logo]()
$953
This British Airways deal was found by Cheapflights users on 6/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:05 pm
IAH
- FNC
1 stop32h 15m
British Airways
Wed 8/2612:10 pm
FNC
- IAH
1 stop31h 15m
British Airways
Deal found 6/16![British Airways logo]()
$1,049
This Iberia deal was found by Cheapflights users on 6/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:30 pm
IAH
- FNC
1 stop21h 05m
Multiple Airlines
Tue 8/257:35 pm
FNC
- IAH
2 stops29h 48m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,088
This Turkish Airlines deal was found by Cheapflights users on 6/17. 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.
Sun 8/169:10 pm
IAH
- LIS
1 stop20h 05m
Turkish Airlines
Tue 8/255:05 pm
LIS
- IAH
1 stop32h 10m
Turkish Airlines
Deal found 6/17![Turkish Airlines logo]()
$928
This United Airlines deal was found by Cheapflights users on 6/17. 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 10/1610:00 am
IAH
- OPO
1 stop15h 10m
United Airlines
Wed 10/2111:20 am
OPO
- IAH
2 stops30h 21m
United Airlines
Deal found 6/17![United Airlines logo]()
$864
This Delta deal was found by Cheapflights users on 6/16. 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 8/43:55 pm
IAH
- LIS
1 stop13h 20m
Delta
Mon 8/1711:55 am
LIS
- IAH
1 stop31h 25m
Delta
Deal found 6/16![Delta logo]()
$967
This Turkish Airlines deal was found by Cheapflights users on 6/18. 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.
Tue 9/19:10 pm
IAH
- LIS
1 stop36h 25m
Turkish Airlines
Tue 9/810:55 am
LIS
- IAH
1 stop38h 20m
Turkish Airlines
Deal found 6/18![Turkish Airlines logo]()
$938
This United Airlines deal was found by Cheapflights users on 6/14. 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 10/1610:00 am
IAH
- OPO
1 stop15h 10m
United Airlines
Tue 10/2011:15 am
OPO
- IAH
2 stops30h 26m
United Airlines
Deal found 6/14![United Airlines logo]()
$864
This British Airways deal was found by Cheapflights users on 6/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/129:10 pm
IAH
- FNC
1 stop32h 20m
British Airways
Tue 7/287:35 pm
FNC
- IAH
1 stop23h 50m
British Airways
Deal found 6/14![British Airways logo]()
$1,154
This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:15 pm
IAH
- LIS
2 stops20h 35m
Delta
Wed 8/195:00 am
LIS
- IAH
2 stops18h 40m
Delta
Deal found 6/19![Delta logo]()
$973
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Tue 7/143:35 pm
IAH
- FNC
2 stops25h 25m
Multiple Airlines
Tue 7/219:00 am
FNC
- IAH
2 stops19h 06m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,208
This United Airlines deal was found by Cheapflights users on 6/18. 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 9/194:50 pm
IAH
- OPO
1 stop32h 05m
United Airlines
Wed 9/306:00 am
OPO
- IAH
1 stop17h 50m
United Airlines
Deal found 6/18![United Airlines logo]()
$879
This Delta deal was found by Cheapflights users on 6/18. 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 8/91:13 pm
HOU
- LIS
2 stops23h 32m
Delta
Tue 8/255:00 am
LIS
- HOU
2 stops23h 05m
Delta
Deal found 6/18![Delta logo]()
$978
Last-minute flights from Houston to PortugalDiscover last-minute flight deals from Houston to Portugal. Data last updated June 19, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Portugal. Data last updated June 19, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 6/14. 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.
Tue 7/143:35 pm
IAH
- OPO
1 stop18h 10m
Multiple Airlines
Tue 7/218:40 am
OPO
- IAH
2 stops19h 26m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$923
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/1410:57 am
IAH
- OPO
1 stop13h 18m
United Airlines
Tue 7/2112:15 pm
OPO
- IAH
1 stop13h 23m
United Airlines
Deal found 6/14![United Airlines logo]()
$928
This Delta deal was found by Cheapflights users on 6/15. 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 7/1412:55 pm
HOU
- OPO
2 stops15h 35m
Delta
Tue 7/216:15 am
OPO
- HOU
2 stops21h 36m
Delta
Deal found 6/15![Delta logo]()
$938
This Booking.com deal was found by Cheapflights users on 6/16. 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.
Tue 7/146:45 am
IAH
- LIS
1 stop22h 20m
Multiple Airlines
Tue 7/211:00 pm
LIS
- IAH
1 stop27h 50m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$950
This Orbitz deal was found by Cheapflights users on 6/16. 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.
Tue 7/1411:45 am
IAH
- LIS
2 stops15h 35m
Air Canada
Tue 7/211:00 pm
LIS
- IAH
1 stop15h 06m
Air Canada
Deal found 6/16![Air Canada logo]()
$972
This Booking.com deal was found by Cheapflights users on 6/17. 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.
Mon 7/2011:45 am
IAH
- LIS
1 stop17h 15m
Multiple Airlines
Wed 8/1212:55 pm
LIS
- IAH
1 stop27h 55m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$966
This Cheapflightsfares deal was found by Cheapflights users on 6/18. 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.
Tue 7/213:30 pm
IAH
- LIS
1 stop17h 00m
British Airways
Tue 7/286:45 pm
LIS
- IAH
1 stop24h 40m
British Airways
Deal found 6/18![British Airways logo]()
$968
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/217:50 pm
IAH
- LIS
1 stop32h 40m
United Airlines
Wed 8/512:55 pm
LIS
- IAH
1 stop27h 55m
United Airlines
Deal found 6/18![United Airlines logo]()
$975
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/2110:00 am
IAH
- LIS
1 stop17h 20m
United Airlines
Tue 7/285:05 am
LIS
- IAH
2 stops25h 40m
United Airlines
Deal found 6/18![United Airlines logo]()
$977
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Mon 7/2710:00 am
IAH
- OPO
1 stop15h 00m
United Airlines
Tue 8/412:15 pm
OPO
- IAH
2 stops33h 03m
United Airlines
Deal found 6/17![United Airlines logo]()
$913
This Air France deal was found by Cheapflights users on 6/18. 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 7/295:05 pm
IAH
- LIS
1 stop15h 50m
Multiple Airlines
Tue 8/183:35 pm
LIS
- IAH
1 stop27h 45m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$959
This Delta deal was found by Cheapflights users on 6/18. 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 7/295:20 pm
IAH
- LIS
2 stops18h 30m
Delta
Tue 8/185:00 am
LIS
- IAH
1 stop14h 20m
Delta
Deal found 6/18![Delta logo]()
$971
One-way flights from Houston to PortugalSearch for one-way flight options from Houston to Portugal. Find affordable one-way fares based on user searches. Data last updated June 19, 2026.
Search for one-way flight options from Houston to Portugal. Find affordable one-way fares based on user searches. Data last updated June 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/101:16 pm
IAH
- LIS
3 stops49h 29m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/117:23 pm
IAH
- LIS
2 stops40h 32m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$353
This Expedia deal was found by Cheapflights users on 6/18. 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.
Wed 11/114:32 pm
IAH
- LIS
2 stops16h 18m
British Airways
Deal found 6/18![British Airways logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Sun 7/267:23 pm
IAH
- LIS
3 stops46h 17m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/137:23 pm
IAH
- LIS
3 stops43h 57m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Fri 7/2410:09 pm
IAH
- LIS
3 stops41h 46m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/201:16 pm
IAH
- OPO
3 stops52h 34m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/148:02 pm
IAH
- LIS
3 stops42h 28m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/127:23 pm
IAH
- LIS
3 stops45h 12m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Sun 7/197:23 pm
IAH
- OPO
3 stops44h 32m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$388
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Sun 9/2710:46 am
IAH
- OPO
2 stops18h 59m
American Airlines
Deal found 6/17![American Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 8/47:23 pm
IAH
- LIS
3 stops46h 17m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$400
Find flight deals from Houston to Portugal
Keep the following information in mind while searching for Houston to Portugal flight deals. Data was last updated June 19, 2026.
Round-trip from | $708 (Gotogate) |
|---|---|
One-way from | $341 (Kiwi.com) |
Popular in | June |
Cheapest in | April |
Average price | $1,365 |
Cheapflights Fare Finder
Customize your flight search to find flights from Houston to Portugal 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 June 19, 2026.
Use the filters below to find and compare flights from Houston to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Mon 12/7
2:30 pm-9:30 am
1 stop13h 00m
Porto
Thu 12/10
6:00 am-6:44 pm
2 stops18h 44m
$718
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sun 12/6
8:40 am-9:30 am
2 stops18h 50m
Porto
Thu 12/10
6:00 am-6:44 pm
2 stops18h 44m
$722
Quickest round-trip
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Tue 11/10
12:10 pm-9:50 am
1 stop15h 40m
Lisbon Humberto Delgado
Wed 11/18
5:00 am-2:00 pm
1 stop15h 00m
$766
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Mon 12/7
9:45 am-8:10 am
2 stops16h 25m
Lisbon Humberto Delgado
Wed 12/9
10:15 am-10:35 pm
2 stops18h 20m
$794
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
6:50 pm-4:00 pm
2 stops15h 10m
Porto
Wed 10/21
12:25 pm-12:19 am
2 stops17h 54m
$836
HoustonFunchal
IAH - FNC
IAHFNC
Houston George Bush Intcntl
Wed 11/11
4:10 pm-5:10 pm
2 stops43h 00m
Funchal Madeira
Wed 11/18
10:25 am-1:25 pm
1 stop33h 00m
$841
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
10:00 am-7:10 am
1 stop15h 10m
Porto
Wed 10/21
11:20 am-11:41 am
2 stops30h 21m
$864
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
10:00 am-7:10 am
1 stop15h 10m
Porto
Tue 10/20
11:15 am-11:41 am
2 stops30h 26m
$864
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sun 8/9
9:45 am-10:25 am
2 stops18h 40m
Porto
Tue 8/25
12:25 pm-11:52 pm
2 stops17h 27m
$868
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
3:55 pm-3:25 pm
1 stop17h 30m
Porto
Wed 10/21
11:45 am-1:15 pm
1 stop31h 30m
$868
Showing 1-10 of 57 resultsSorted by cheapest first
Best time to book a flight from Houston to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Houston with our price prediction graph.
IAH-LIS
IAH-OPO
IAH-FNC
HOU-LIS
HOU-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 to Portugal
HO1-PT0
IAH-LIS
IAH-OPO
IAH-FNC
HOU-LIS
What is the cheapest month to book a flight from Houston to Portugal?
Currently, March is the cheapest month in which you can book a flight from Houston to Portugal (average of $395). Flying from Houston to Portugal in June is currently the most expensive (average of $1,089). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Houston to Portugal?
The best time to book flights from Houston to Portugal is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Portugal
Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated June 19, 2026.
Get a feel of what it's like to fly with KLM,Delta, andAir France from Houston to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.8
Comfort
7.7
Crew
8.4
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Houston to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Houston to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Houston to Portugal by cabin class
Find flights from Houston to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Houston and Portugal flights
Browse other Houston and Portugal flight options. Last updated on June 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Houston to Portugal flights
Consider these flights traveling from Houston to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 8 airlines flying from Houston to Portugal
Discover the top 8 airlines that operate flights from Houston to Portugal. 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 June 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$395 | Average$627 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$466 | Average$868 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$476 | Average$940 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$540 | Average$768 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$559 | Average$858 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$581 | Average$1,008 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$621 | Average$734 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$646 | Average$870 | FlexibilityNo cancel fee | On-time67% |