$360+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — LIS
Jun 24 — Jul 11
Round-trip
1 adult, Economy
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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 May 25, 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 May 25, 2026.
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Mon 11/161:35 pm
IAH
- OPO
1 stop13h 55m
United Airlines
Thu 11/196:00 am
OPO
- IAH
1 stop18h 15m
United Airlines
Deal found 5/22![United Airlines logo]()
$707
This Air France deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:50 am
IAH
- OPO
2 stops16h 40m
Multiple Airlines
Thu 11/1911:15 am
OPO
- IAH
1 stop31h 50m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$709
This Delta deal was found by Cheapflights users on 5/22. 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.
Mon 11/166:00 am
HOU
- OPO
2 stops22h 30m
Delta
Thu 11/195:00 am
OPO
- HOU
2 stops22h 43m
Delta
Deal found 5/22![Delta logo]()
$723
This KLM deal was found by Cheapflights users on 5/24. 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 10/193:55 pm
IAH
- OPO
1 stop17h 30m
KLM
Wed 10/285:00 am
OPO
- IAH
1 stop14h 25m
KLM
Deal found 5/24![KLM logo]()
$765
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Mon 10/128:11 pm
IAH
- OPO
2 stops28h 49m
United Airlines
Wed 10/2112:45 pm
OPO
- IAH
2 stops32h 06m
United Airlines
Deal found 5/22![United Airlines logo]()
$766
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Sat 11/77:59 pm
IAH
- OPO
2 stops31h 31m
United Airlines
Sun 11/156:00 am
OPO
- IAH
2 stops24h 30m
United Airlines
Deal found 5/24![United Airlines logo]()
$772
This American Airlines deal was found by Cheapflights users on 5/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:15 pm
HOU
- OPO
2 stops17h 45m
American Airlines
Wed 10/2112:25 pm
OPO
- HOU
2 stops17h 28m
American Airlines
Deal found 5/22![American Airlines logo]()
$842
This CheapOair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:20 am
IAH
- LIS
2 stops20h 00m
Multiple Airlines
Thu 10/225:55 am
LIS
- IAH
2 stops19h 57m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$847
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 8/319:10 pm
IAH
- LIS
1 stop20h 25m
Turkish Airlines
Wed 9/95:55 am
LIS
- IAH
1 stop19h 20m
Turkish Airlines
Deal found 5/25![Turkish Airlines logo]()
$849
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/203:25 pm
IAH
- LIS
2 stops17h 30m
Delta
Tue 10/275:00 am
LIS
- IAH
2 stops18h 17m
Delta
Deal found 5/23![Delta logo]()
$850
This Booking.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:10 pm
IAH
- LIS
1 stop30h 45m
Turkish Airlines
Mon 9/145:55 am
LIS
- IAH
1 stop19h 20m
Turkish Airlines
Deal found 5/21![Turkish Airlines logo]()
$851
This American Airlines deal was found by Cheapflights users on 5/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:18 am
IAH
- LIS
2 stops15h 47m
American Airlines
Wed 10/288:45 pm
LIS
- IAH
2 stops17h 51m
American Airlines
Deal found 5/25![American Airlines logo]()
$854
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 May 25, 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 May 25, 2026.
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Mon 11/161:35 pm
IAH
- OPO
1 stop13h 55m
United Airlines
Thu 11/196:00 am
OPO
- IAH
1 stop18h 15m
United Airlines
Deal found 5/22![United Airlines logo]()
$707
This Delta deal was found by Cheapflights users on 5/24. 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.
Sat 11/74:05 pm
IAH
- OPO
1 stop12h 25m
Delta
Sun 11/155:00 am
OPO
- IAH
1 stop14h 25m
Delta
Deal found 5/24![Delta logo]()
$809
This KLM deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:55 pm
IAH
- OPO
1 stop17h 30m
KLM
Wed 10/214:20 pm
OPO
- IAH
1 stop26h 55m
KLM
Deal found 5/25![KLM logo]()
$815
This Booking.com deal was found by Cheapflights users on 5/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:05 pm
IAH
- FNC
1 stop33h 20m
British Airways
Tue 9/812:20 pm
FNC
- IAH
1 stop31h 05m
British Airways
Deal found 5/22![British Airways logo]()
$1,198
This Mytrip deal was found by Cheapflights users on 5/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:45 am
IAH
- FNC
3 stops27h 00m
Multiple Airlines
Sun 7/268:40 am
FNC
- IAH
2 stops19h 21m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,325
This FlightHub deal was found by Cheapflights users on 5/23. 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.
Tue 7/1411:50 am
IAH
- FNC
2 stops38h 30m
TAP AIR PORTUGAL
Tue 7/2110:45 pm
FNC
- IAH
2 stops41h 05m
TAP AIR PORTUGAL
Deal found 5/23![TAP AIR PORTUGAL logo]()
$1,443
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Fri 10/168:35 pm
IAH
- OPO
2 stops28h 25m
United Airlines
Wed 10/2111:20 am
OPO
- IAH
2 stops30h 21m
United Airlines
Deal found 5/24![United Airlines logo]()
$816
This Iberia deal was found by Cheapflights users on 5/24. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:46 pm
HOU
- FNC
2 stops17h 39m
Iberia
Sun 7/2611:20 am
FNC
- HOU
2 stops42h 36m
Iberia
Deal found 5/24![Iberia logo]()
$1,738
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:00 pm
HOU
- LIS
2 stops16h 20m
Delta
Sat 11/215:30 am
LIS
- HOU
2 stops22h 13m
Delta
Deal found 5/20![Delta logo]()
$891
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Fri 10/169:45 pm
IAH
- OPO
2 stops27h 15m
United Airlines
Tue 10/2011:20 am
OPO
- IAH
2 stops34h 18m
United Airlines
Deal found 5/23![United Airlines logo]()
$816
This KLM deal was found by Cheapflights users on 5/24. 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.
Sun 8/165:48 pm
IAH
- OPO
2 stops15h 42m
KLM
Sat 8/2211:45 am
OPO
- IAH
1 stop31h 35m
KLM
Deal found 5/24![KLM logo]()
$936
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:05 am
HOU
- OPO
2 stops23h 25m
Delta
Wed 9/235:55 am
OPO
- HOU
2 stops21h 40m
Delta
Deal found 5/21![Delta logo]()
$915
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:50 pm
IAH
- OPO
2 stops29h 05m
United Airlines
Tue 9/226:00 am
OPO
- IAH
2 stops34h 25m
United Airlines
Deal found 5/20![United Airlines logo]()
$908
This Delta deal was found by Cheapflights users on 5/22. 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 9/205:55 am
IAH
- LIS
2 stops20h 55m
Delta
Wed 9/305:00 am
LIS
- IAH
2 stops22h 03m
Delta
Deal found 5/22![Delta logo]()
$917
This KLM deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:20 pm
IAH
- FNC
1 stop35h 55m
KLM
Sun 9/66:40 pm
FNC
- IAH
2 stops32h 39m
KLM
Deal found 5/25![KLM logo]()
$1,014
This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:15 pm
IAH
- LIS
2 stops15h 05m
United Airlines
Thu 10/87:25 am
LIS
- IAH
2 stops20h 23m
United Airlines
Deal found 5/22![United Airlines logo]()
$916
This Delta deal was found by Cheapflights users on 5/24. 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.
Sun 9/206:00 am
HOU
- LIS
2 stops20h 50m
Delta
Wed 9/305:35 am
LIS
- HOU
2 stops23h 00m
Delta
Deal found 5/24![Delta logo]()
$924
This KLM deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:00 pm
IAH
- FNC
2 stops18h 45m
KLM
Sun 8/166:35 pm
FNC
- IAH
2 stops27h 22m
KLM
Deal found 5/25![KLM logo]()
$1,117
This Delta deal was found by Cheapflights users on 5/22. 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.
Mon 10/121:00 pm
HOU
- LIS
2 stops22h 50m
Delta
Wed 10/215:35 am
LIS
- HOU
2 stops22h 08m
Delta
Deal found 5/22![Delta logo]()
$924
This United Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 5/21![United Airlines logo]()
$927
This Priceline deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2511:43 am
IAH
- FNC
2 stops30h 27m
Multiple Airlines
Wed 7/295:35 am
FNC
- IAH
2 stops41h 44m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$1,399
This Delta deal was found by Cheapflights users on 5/22. 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.
Mon 8/106:00 am
HOU
- OPO
2 stops20h 30m
Delta
Mon 8/245:00 am
OPO
- HOU
2 stops23h 46m
Delta
Deal found 5/22![Delta logo]()
$941
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:00 am
IAH
- LIS
1 stop17h 20m
United Airlines
Wed 9/305:05 am
LIS
- IAH
1 stop18h 45m
United Airlines
Deal found 5/23![United Airlines logo]()
$961
This Justfly.com deal was found by Cheapflights users on 5/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:56 am
IAH
- FNC
2 stops31h 34m
TAP AIR PORTUGAL
Tue 6/98:40 am
FNC
- IAH
2 stops31h 10m
TAP AIR PORTUGAL
Deal found 5/24![TAP AIR PORTUGAL logo]()
$1,559
This Mytrip deal was found by Cheapflights users on 5/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/811:45 am
IAH
- FNC
3 stops18h 40m
Multiple Airlines
Wed 8/195:50 am
FNC
- IAH
2 stops35h 00m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,474
This Delta deal was found by Cheapflights users on 5/24. 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.
Tue 9/13:20 pm
IAH
- LIS
1 stop13h 35m
Delta
Tue 9/85:00 am
LIS
- IAH
1 stop14h 15m
Delta
Deal found 5/24![Delta logo]()
$944
This TAP AIR PORTUGAL deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:44 am
IAH
- FNC
2 stops19h 46m
TAP AIR PORTUGAL
Fri 11/63:05 pm
FNC
- IAH
2 stops23h 35m
TAP AIR PORTUGAL
Deal found 5/21![TAP AIR PORTUGAL logo]()
$1,567
This United Airlines deal was found by Cheapflights users on 5/22. 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 9/188:11 pm
IAH
- LIS
2 stops55h 09m
United Airlines
Sun 9/271:00 pm
LIS
- IAH
2 stops32h 17m
United Airlines
Deal found 5/22![United Airlines logo]()
$979
This Iberia deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:49 pm
HOU
- FNC
2 stops33h 31m
Iberia
Wed 7/291:35 pm
FNC
- HOU
2 stops40h 21m
Iberia
Deal found 5/21![Iberia logo]()
$1,781
This Delta deal was found by Cheapflights users on 5/22. 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.
Thu 8/2010:50 am
HOU
- LIS
2 stops18h 25m
Delta
Wed 8/265:00 am
LIS
- HOU
2 stops23h 46m
Delta
Deal found 5/22![Delta logo]()
$977
Last-minute flights from Houston to PortugalDiscover last-minute flight deals from Houston to Portugal. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Portugal. Data last updated May 25, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 5/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:20 am
IAH
- LIS
1 stop20h 15m
Multiple Airlines
Thu 6/118:15 am
LIS
- IAH
2 stops20h 56m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,121
This Mytrip deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:30 am
IAH
- LIS
3 stops33h 15m
WestJet
Sun 6/216:10 am
LIS
- IAH
3 stops46h 30m
WestJet
Deal found 5/21![WestJet logo]()
$1,129
This Mytrip deal was found by Cheapflights users on 5/22. 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.
Sat 6/206:30 am
IAH
- LIS
2 stops32h 25m
WestJet
Tue 6/236:15 am
LIS
- IAH
2 stops37h 40m
WestJet
Deal found 5/22![WestJet logo]()
$1,123
This Lufthansa deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/224:40 pm
IAH
- OPO
1 stop22h 25m
Lufthansa
Mon 6/294:35 pm
OPO
- IAH
1 stop27h 00m
Lufthansa
Deal found 5/23![Lufthansa logo]()
$1,115
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2311:52 am
IAH
- LIS
1 stop17h 28m
Multiple Airlines
Tue 7/76:15 am
LIS
- IAH
2 stops22h 09m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$942
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2311:52 am
IAH
- LIS
1 stop17h 28m
Multiple Airlines
Mon 7/66:15 am
LIS
- IAH
2 stops34h 41m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$989
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2311:52 am
IAH
- LIS
1 stop17h 28m
Multiple Airlines
Thu 7/26:10 am
LIS
- IAH
2 stops34h 49m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,037
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/276:44 pm
IAH
- OPO
2 stops30h 06m
United Airlines
Tue 7/712:15 pm
OPO
- IAH
2 stops33h 07m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,146
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Sun 6/2811:52 am
IAH
- LIS
1 stop19h 08m
Multiple Airlines
Tue 7/76:15 am
LIS
- IAH
2 stops22h 09m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,132
This Lufthansa deal was found by Cheapflights users on 5/25. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/294:40 pm
IAH
- OPO
1 stop24h 45m
Lufthansa
Thu 7/96:20 am
OPO
- IAH
1 stop16h 10m
Lufthansa
Deal found 5/25![Lufthansa logo]()
$1,148
This Delta deal was found by Cheapflights users on 5/25. 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.
Mon 6/293:25 pm
IAH
- OPO
1 stop24h 50m
Delta
Mon 7/611:25 am
OPO
- IAH
1 stop31h 55m
Delta
Deal found 5/25![Delta logo]()
$1,150
This Delta deal was found by Cheapflights users on 5/25. 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.
Tue 6/305:00 pm
IAH
- OPO
1 stop16h 25m
Delta
Wed 7/85:00 am
OPO
- IAH
1 stop14h 20m
Delta
Deal found 5/25![Delta logo]()
$1,145
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 May 25, 2026.
Search for one-way flight options from Houston to Portugal. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 5/23. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:05 am
HOU
- LIS
2 stops15h 55m
Virgin Atlantic
Deal found 5/23![Virgin Atlantic logo]()
$360
This CheapOair deal was found by Cheapflights users on 5/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/139:05 pm
IAH
- LIS
2 stops20h 20m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$384
This KLM deal was found by Cheapflights users on 5/24. 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 9/281:00 pm
HOU
- OPO
2 stops15h 30m
KLM
Deal found 5/24![KLM logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:29 pm
IAH
- LIS
3 stops38h 46m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$386
This Air France deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:21 pm
IAH
- OPO
2 stops16h 09m
Air France
Deal found 5/24![Air France logo]()
$386
This Air France deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:00 pm
HOU
- OPO
2 stops15h 30m
Air France
Deal found 5/21![Air France logo]()
$387
This Cheapflightsfares deal was found by Cheapflights users on 5/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:30 pm
IAH
- OPO
1 stop22h 35m
British Airways
Deal found 5/24![British Airways logo]()
$388
This Delta deal was found by Cheapflights users on 5/23. 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.
Sun 9/276:00 am
HOU
- OPO
2 stops22h 25m
Delta
Deal found 5/23![Delta logo]()
$390
This KLM deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm
IAH
- OPO
1 stop17h 35m
KLM
Deal found 5/23![KLM logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 10/1512:21 pm
IAH
- LIS
3 stops48h 19m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Sun 9/278:35 pm
IAH
- OPO
2 stops28h 25m
United Airlines
Deal found 5/23![United Airlines logo]()
$394
This oojo deal was found by Cheapflights users on 5/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm
IAH
- LIS
1 stop20h 30m
British Airways
Deal found 5/22![British Airways logo]()
$396
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 May 25, 2026.
Round-trip from | $707 (United Airlines) |
|---|---|
One-way from | $360 (Virgin Atlantic) |
Popular in | June |
Cheapest in | April |
Average price | $1,193 |
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 May 25, 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 11/16
1:35 pm-9:30 am
1 stop13h 55m
Porto
Thu 11/19
6:00 am-6:15 pm
1 stop18h 15m
$707
Quickest round-trip
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sat 11/7
4:05 pm-10:30 am
1 stop12h 25m
Porto
Sun 11/15
5:00 am-1:25 pm
1 stop14h 25m
$809
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
3:55 pm-3:25 pm
1 stop17h 30m
Porto
Wed 10/21
4:20 pm-1:15 pm
1 stop26h 55m
$815
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
8:35 pm-7:00 am
2 stops28h 25m
Porto
Wed 10/21
11:20 am-11:41 am
2 stops30h 21m
$816
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Fri 10/16
9:45 pm-7:00 am
2 stops27h 15m
Porto
Tue 10/20
11:20 am-3:38 pm
2 stops34h 18m
$816
HoustonLisbon
HOU - LIS
HOULIS
Houston Hobby
Sat 11/14
1:00 pm-11:20 am
2 stops16h 20m
Lisbon Humberto Delgado
Sat 11/21
5:30 am-9:43 pm
2 stops22h 13m
$891
HoustonPorto
IAH - OPO
IAHOPO
Houston George Bush Intcntl
Sat 9/12
7:50 pm-6:55 am
2 stops29h 05m
Porto
Tue 9/22
6:00 am-10:25 am
2 stops34h 25m
$908
HoustonPorto
HOU - OPO
HOUOPO
Houston Hobby
Sun 9/13
10:05 am-3:30 pm
2 stops23h 25m
Porto
Wed 9/23
5:55 am-9:35 pm
2 stops21h 40m
$915
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Tue 9/29
12:15 pm-9:20 am
2 stops15h 05m
Lisbon Humberto Delgado
Thu 10/8
7:25 am-9:48 pm
2 stops20h 23m
$916
HoustonLisbon
IAH - LIS
IAHLIS
Houston George Bush Intcntl
Sun 9/20
5:55 am-8:50 am
2 stops20h 55m
Lisbon Humberto Delgado
Wed 9/30
5:00 am-9:03 pm
2 stops22h 03m
$917
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-FNC
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-FNC
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 $961). 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 70 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 May 25, 2026.
Get a feel of what it's like to fly with Delta,KLM, 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
8.1
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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 May 25, 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 May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$395 | Average$1,021 | 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$561 | Average$874 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$583 | Average$1,004 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$621 | Average$743 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$646 | Average$915 | FlexibilityNo cancel fee | On-time67% |