$306+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
Aug 26 — Sep 21
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 July 27, 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 July 27, 2026.
This SmartFares deal was found by Cheapflights users on 7/24. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/112:00 pm
IAH
- LIS
1 stop15h 20m
Multiple Airlines
Thu 11/265:00 am
LIS
- IAH
1 stop15h 00m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$697
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:50 am
IAH
- LIS
1 stop13h 05m
Multiple Airlines
Wed 11/255:00 am
LIS
- IAH
1 stop15h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$712
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1512:00 pm
IAH
- LIS
1 stop15h 20m
Multiple Airlines
Tue 12/155:00 am
LIS
- IAH
1 stop15h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$717
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:50 am
IAH
- LIS
1 stop13h 05m
Multiple Airlines
Tue 11/1012:25 pm
LIS
- IAH
1 stop31h 35m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$723
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 11/1111:50 am
IAH
- LIS
1 stop13h 05m
United Airlines
Thu 11/195:00 am
LIS
- IAH
1 stop19h 15m
United Airlines
Deal found 7/22![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 7/22. 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 11/107:30 am
IAH
- LIS
1 stop18h 40m
United Airlines
Wed 11/185:00 am
LIS
- IAH
1 stop19h 15m
United Airlines
Deal found 7/22![United Airlines logo]()
$728
This Delta deal was found by Cheapflights users on 7/22. 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.
Sun 11/157:10 pm
IAH
- LIS
1 stop14h 00m
Delta
Wed 12/211:30 am
LIS
- IAH
1 stop31h 40m
Delta
Deal found 7/22![Delta logo]()
$730
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:05 pm
IAH
- LIS
2 stops30h 35m
United Airlines
Thu 11/268:55 am
LIS
- IAH
2 stops36h 45m
United Airlines
Deal found 7/24![United Airlines logo]()
$734
This Delta deal was found by Cheapflights users on 7/22. 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.
Tue 11/1711:30 am
IAH
- LIS
2 stops15h 30m
Delta
Wed 12/211:30 am
LIS
- IAH
1 stop31h 40m
Delta
Deal found 7/22![Delta logo]()
$735
This Delta deal was found by Cheapflights users on 7/22. 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.
Tue 11/106:00 am
HOU
- LIS
2 stops23h 25m
Delta
Wed 11/185:00 am
LIS
- HOU
2 stops22h 43m
Delta
Deal found 7/22![Delta logo]()
$744
This Virgin Atlantic deal was found by Cheapflights users on 7/26. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am
HOU
- LIS
2 stops21h 00m
Virgin Atlantic
Wed 11/2511:15 am
LIS
- HOU
2 stops17h 58m
Virgin Atlantic
Deal found 7/26![Virgin Atlantic logo]()
$755
This Delta deal was found by Cheapflights users on 7/22. 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.
Tue 10/203:55 pm
IAH
- OPO
1 stop17h 30m
Delta
Fri 10/305:00 am
OPO
- IAH
1 stop14h 05m
Delta
Deal found 7/22![Delta 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 July 27, 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 July 27, 2026.
This United deal was found by Cheapflights users on 7/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/274:10 pm
IAH
- OPO
1 stop24h 15m
Multiple Airlines
Fri 1/86:00 am
OPO
- IAH
2 stops23h 35m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$793
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:24 pm
IAH
- LIS
2 stops18h 21m
Delta
Wed 10/145:00 am
LIS
- IAH
2 stops21h 08m
Delta
Deal found 7/24![Delta logo]()
$808
This Turkish Airlines deal was found by Cheapflights users on 7/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:15 pm
IAH
- LIS
1 stop20h 30m
Turkish Airlines
Wed 9/234:45 pm
LIS
- IAH
1 stop32h 35m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Wed 10/75:15 am
IAH
- LIS
2 stops23h 50m
United Airlines
Mon 10/127:25 am
LIS
- IAH
1 stop36h 10m
United Airlines
Deal found 7/23![United Airlines logo]()
$843
This KLM deal was found by Cheapflights users on 7/22. 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.
Fri 10/163:55 pm
IAH
- OPO
1 stop17h 30m
KLM
Tue 10/205:00 am
OPO
- IAH
1 stop14h 20m
KLM
Deal found 7/22![KLM logo]()
$872
This KAYAK deal was found by Cheapflights users on 7/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:20 pm
IAH
- FNC
2 stops29h 45m
Lufthansa
Wed 8/269:40 am
FNC
- IAH
1 stop13h 06m
Lufthansa
Deal found 7/26![Lufthansa logo]()
$918
This FlightHub deal was found by Cheapflights users on 7/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:14 pm
HOU
- OPO
2 stops26h 26m
British Airways
Sun 9/69:30 pm
OPO
- HOU
2 stops26h 14m
British Airways
Deal found 7/23![British Airways logo]()
$1,174
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/22. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:25 pm
IAH
- FNC
2 stops19h 50m
TAP AIR PORTUGAL
Thu 12/107:50 am
FNC
- IAH
2 stops21h 45m
TAP AIR PORTUGAL
Deal found 7/22![TAP AIR PORTUGAL logo]()
$1,559
This Delta deal was found by Cheapflights users on 7/23. 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.
Wed 10/75:28 pm
HOU
- LIS
2 stops19h 17m
Delta
Wed 10/145:00 am
LIS
- HOU
2 stops24h 09m
Delta
Deal found 7/23![Delta logo]()
$808
This Turkish Airlines deal was found by Cheapflights users on 7/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:15 pm
IAH
- LIS
1 stop20h 30m
Turkish Airlines
Fri 9/45:55 am
LIS
- IAH
1 stop19h 25m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:35 pm
IAH
- FNC
2 stops28h 30m
United Airlines
Wed 8/269:40 am
FNC
- IAH
1 stop13h 06m
United Airlines
Deal found 7/26![United Airlines logo]()
$868
This Turkish Airlines deal was found by Cheapflights users on 7/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:15 pm
IAH
- LIS
1 stop36h 20m
Turkish Airlines
Tue 9/85:05 pm
LIS
- IAH
1 stop32h 15m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 7/22. 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.
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 7/22![United Airlines logo]()
$869
This Delta deal was found by Cheapflights users on 7/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:01 am
IAH
- OPO
2 stops17h 39m
Delta
Tue 10/205:00 am
OPO
- IAH
2 stops22h 17m
Delta
Deal found 7/25![Delta logo]()
$890
This Turkish Airlines deal was found by Cheapflights users on 7/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:15 pm
IAH
- OPO
1 stop30h 45m
Turkish Airlines
Thu 9/2411:00 am
OPO
- IAH
1 stop38h 20m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$836
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 10/1610:00 am
IAH
- OPO
1 stop15h 10m
United Airlines
Tue 10/2011:15 am
OPO
- IAH
2 stops32h 13m
United Airlines
Deal found 7/25![United Airlines logo]()
$869
This KLM deal was found by Cheapflights users on 7/24. 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 9/75:20 pm
HOU
- FNC
2 stops34h 15m
KLM
Mon 9/1410:20 am
FNC
- HOU
2 stops36h 10m
KLM
Deal found 7/24![KLM logo]()
$1,058
This Delta deal was found by Cheapflights users on 7/27. 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 9/153:20 pm
IAH
- OPO
2 stops18h 05m
Delta
Thu 9/245:00 am
OPO
- IAH
1 stop14h 20m
Delta
Deal found 7/27![Delta logo]()
$925
This Turkish Airlines deal was found by Cheapflights users on 7/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:15 pm
IAH
- LIS
1 stop36h 20m
Turkish Airlines
Sat 10/35:05 pm
LIS
- IAH
1 stop32h 15m
Turkish Airlines
Deal found 7/26![Turkish Airlines logo]()
$882
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:35 pm
IAH
- OPO
2 stops28h 25m
United Airlines
Thu 9/2411:50 am
OPO
- IAH
2 stops33h 03m
United Airlines
Deal found 7/24![United Airlines logo]()
$922
This Iberia deal was found by Cheapflights users on 7/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:14 pm
HOU
- FNC
2 stops35h 21m
Iberia
Thu 9/101:05 pm
FNC
- HOU
2 stops36h 43m
Iberia
Deal found 7/22![Iberia logo]()
$2,480
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:00 am
HOU
- OPO
2 stops22h 25m
Delta
Tue 9/225:00 am
OPO
- HOU
2 stops17h 30m
Delta
Deal found 7/26![Delta logo]()
$935
This KLM deal was found by Cheapflights users on 7/24. 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 9/75:09 pm
IAH
- FNC
2 stops34h 26m
KLM
Mon 9/1410:20 am
FNC
- IAH
1 stop33h 00m
KLM
Deal found 7/24![KLM logo]()
$1,171
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/25. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:55 am
HOU
- LIS
2 stops17h 25m
Multiple Airlines
Wed 10/2810:00 am
LIS
- HOU
1 stop26h 05m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,313
This Travelocity deal was found by Cheapflights users on 7/23. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:14 pm
HOU
- FNC
2 stops20h 21m
British Airways
Mon 8/106:55 pm
FNC
- HOU
2 stops30h 56m
British Airways
Deal found 7/23![British Airways logo]()
$1,343
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
IAH
- LIS
2 stops20h 20m
United Airlines
Sat 10/35:05 am
LIS
- IAH
2 stops18h 12m
United Airlines
Deal found 7/26![United Airlines logo]()
$923
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:13 pm
HOU
- OPO
2 stops15h 27m
Delta
Wed 9/25:00 am
OPO
- HOU
2 stops23h 05m
Delta
Deal found 7/26![Delta logo]()
$939
This Mytrip deal was found by Cheapflights users on 7/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:45 am
IAH
- FNC
3 stops20h 05m
Multiple Airlines
Wed 8/262:15 pm
FNC
- IAH
3 stops35h 23m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,338
This FlightHub deal was found by Cheapflights users on 7/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:35 pm
IAH
- FNC
1 stop18h 40m
Lufthansa
Mon 10/199:55 pm
FNC
- IAH
2 stops25h 55m
Lufthansa
Deal found 7/22![Lufthansa logo]()
$1,490
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:20 pm
HOU
- OPO
2 stops22h 55m
Delta
Mon 9/287:00 am
OPO
- HOU
2 stops21h 39m
Delta
Deal found 7/24![Delta logo]()
$957
Last-minute flights from Houston to PortugalDiscover last-minute flight deals from Houston to Portugal. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Portugal. Data last updated July 27, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:15 pm
IAH
- LIS
1 stop30h 40m
Turkish Airlines
Tue 8/2510:55 am
LIS
- IAH
1 stop38h 25m
Turkish Airlines
Deal found 7/26![Turkish Airlines logo]()
$803
This Gotogate deal was found by Cheapflights users on 7/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:15 pm
IAH
- OPO
1 stop36h 35m
Turkish Airlines
Tue 8/254:50 pm
OPO
- IAH
1 stop32h 30m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$824
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:35 pm
IAH
- FNC
2 stops28h 30m
United Airlines
Wed 8/269:40 am
FNC
- IAH
1 stop13h 06m
United Airlines
Deal found 7/26![United Airlines logo]()
$868
This Turkish Airlines deal was found by Cheapflights users on 7/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:15 pm
IAH
- OPO
1 stop30h 30m
Turkish Airlines
Mon 8/246:30 am
OPO
- IAH
1 stop18h 50m
Turkish Airlines
Deal found 7/22![Turkish Airlines logo]()
$876
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/128:37 pm
IAH
- LIS
1 stop14h 38m
Multiple Airlines
Tue 9/110:20 am
LIS
- IAH
1 stop29h 34m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$802
This Gotogate deal was found by Cheapflights users on 7/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:15 pm
IAH
- LIS
1 stop20h 30m
Turkish Airlines
Tue 9/15:05 pm
LIS
- IAH
1 stop32h 15m
Turkish Airlines
Deal found 7/24![Turkish Airlines logo]()
$811
This Turkish Airlines deal was found by Cheapflights users on 7/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:15 pm
IAH
- LIS
1 stop36h 20m
Turkish Airlines
Tue 9/110:55 am
LIS
- IAH
1 stop38h 25m
Turkish Airlines
Deal found 7/23![Turkish Airlines logo]()
$823
This Turkish Airlines deal was found by Cheapflights users on 7/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:15 pm
IAH
- OPO
1 stop30h 25m
Turkish Airlines
Tue 8/2510:40 am
OPO
- IAH
1 stop38h 40m
Turkish Airlines
Deal found 7/26![Turkish Airlines logo]()
$836
This Turkish Airlines deal was found by Cheapflights users on 7/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:15 pm
IAH
- LIS
1 stop30h 40m
Turkish Airlines
Mon 8/245:55 am
LIS
- IAH
1 stop19h 25m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$862
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:10 pm
IAH
- LIS
1 stop20h 10m
Multiple Airlines
Wed 9/239:10 am
LIS
- IAH
2 stops29h 35m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$799
This Turkish Airlines deal was found by Cheapflights users on 7/24. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:15 pm
IAH
- LIS
1 stop20h 30m
Turkish Airlines
Fri 9/45:55 am
LIS
- IAH
1 stop19h 25m
Turkish Airlines
Deal found 7/24![Turkish Airlines logo]()
$822
This Gotogate deal was found by Cheapflights users on 7/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:15 pm
IAH
- LIS
1 stop20h 05m
Turkish Airlines
Wed 9/95:55 am
LIS
- IAH
1 stop19h 25m
Turkish Airlines
Deal found 7/23![Turkish Airlines logo]()
$800
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 July 27, 2026.
Search for one-way flight options from Houston to Portugal. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:09 pm
IAH
- LIS
2 stops43h 56m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:09 pm
IAH
- LIS
3 stops45h 36m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:25 pm
IAH
- LIS
3 stops54h 35m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:35 am
IAH
- OPO
3 stops42h 15m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:15 pm
IAH
- LIS
3 stops43h 15m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:45 pm
IAH
- LIS
2 stops24h 10m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:21 pm
IAH
- FNC
3 stops50h 24m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$365
This British Airways deal was found by Cheapflights users on 7/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:40 pm
IAH
- FNC
1 stop36h 30m
British Airways
Deal found 7/22![British Airways logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:14 pm
IAH
- LIS
3 stops57h 41m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:57 am
IAH
- LIS
2 stops30h 18m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:45 pm
IAH
- LIS
2 stops24h 25m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 9/238:44 pm
IAH
- OPO
3 stops40h 16m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$381
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 July 27, 2026.
Round-trip from | $713 (KLM) |
|---|---|
One-way from | $306 (Kiwi.com) |
Popular in | June |
Cheapest in | April |
Average price | $1,272 |
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 July 27, 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
Sun 12/27
4:10 pm-10:25 pm
1 stop24h 15m
Porto
Fri 1/8
6:00 am-11:35 pm
2 stops23h 35m
$793
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Wed 10/7
6:24 pm-6:45 pm
2 stops18h 21m
Lisbon Humberto Delgado
Wed 10/14
5:00 am-8:08 pm
2 stops21h 08m
$808
HoustonLisbon
HOU - LIS
HOULIS
Houston Hobby
Wed 10/7
5:28 pm-6:45 pm
2 stops19h 17m
Lisbon Humberto Delgado
Wed 10/14
5:00 am-11:09 pm
2 stops24h 09m
$808
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Wed 9/16
9:15 pm-11:45 pm
1 stop20h 30m
Lisbon Humberto Delgado
Wed 9/23
4:45 pm-7:20 pm
1 stop32h 35m
$822
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Wed 8/26
9:15 pm-11:45 pm
1 stop20h 30m
Lisbon Humberto Delgado
Fri 9/4
5:55 am-7:20 pm
1 stop19h 25m
$822
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Tue 9/1
9:15 pm-3:35 pm
1 stop36h 20m
Lisbon Humberto Delgado
Tue 9/8
5:05 pm-7:20 pm
1 stop32h 15m
$822
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Tue 9/15
9:15 pm-10:00 am
1 stop30h 45m
Porto
Thu 9/24
11:00 am-7:20 pm
1 stop38h 20m
$836
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Wed 10/7
5:15 am-11:05 am
2 stops23h 50m
Lisbon Humberto Delgado
Mon 10/12
7:25 am-1:35 pm
1 stop36h 10m
$843
HoustonFunchal
IAH - FNC
IAHFNC
Houston George Bush Intcntl
Mon 8/10
9:35 pm-8:05 am
2 stops28h 30m
Funchal Madeira
Wed 8/26
9:40 am-4:46 pm
1 stop13h 06m
$868
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
$869
Showing 1-10 of 60 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-OPO
HOU-LIS
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-OPO
What is the cheapest month to book a flight from Houston to Portugal?
Currently, January is the cheapest month in which you can book a flight from Houston to Portugal (average of $682). Flying from Houston to Portugal in June is currently the most expensive (average of $1,349). 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 79 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 July 27, 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.
Food
7.3
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
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 July 27, 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 July 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$476 | Average$922 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$512 | Average$775 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$534 | Average$874 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$559 | Average$846 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$575 | Average$1,092 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$621 | Average$726 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$646 | Average$870 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$719 | Average$1,254 | FlexibilityNo cancel fee | On-time76% |