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Find cheap flights from Houston to Portugal from $591

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Houston to Portugal departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/22
Sat 6/29

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In the last 7 days travelers have searched 43,423,329 times on KAYAK, and here is why:

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FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Houston to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal from Houston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portugal with an airline and back to Houston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portugal from Houston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Houston to Portugal

Recent round-trip flight deals

11/11Mon
1 stop
18h 10mIAH-LIS
11/18Mon
2 stops
29h 10mLIS-IAH
$665
11/11Mon
1 stopBritish Airways
23h 55mIAH-LIS
11/18Mon
1 stopBritish Airways
28h 30mLIS-IAH
$669
10/30Wed
2 stopsUnited Airlines
17h 30mIAH-LIS
11/5Tue
1 stopUnited Airlines
31h 50mLIS-IAH
$683
11/11Mon
2 stopsAmerican Airlines
18h 35mIAH-LIS
11/18Mon
2 stopsAmerican Airlines
18h 59mLIS-IAH
$718
10/30Wed
2 stopsAmerican Airlines
19h 19mIAH-LIS
11/5Tue
2 stopsAmerican Airlines
18h 44mLIS-IAH
$723
11/11Mon
2 stopsDelta
15h 30mHOU-LIS
11/18Mon
2 stopsDelta
23h 15mLIS-HOU
$734
11/8Fri
2 stopsAir Canada
33h 10mIAH-LIS
11/17Sun
2 stopsAir Canada
22h 58mLIS-IAH
$756
11/8Fri
2 stopsAir Canada
33h 10mIAH-LIS
11/17Sun
1 stopAir Canada
16h 58mLIS-IAH
$763
6/9Sun
1 stopUnited Airlines
12h 36mIAH-OPO
6/25Tue
1 stopUnited Airlines
17h 19mOPO-IAH
$1,002
6/9Sun
1 stopDelta
19h 36mIAH-LIS
6/19Wed
1 stopDelta
13h 55mLIS-IAH
$1,022

Search by stops

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Recent one-way flight deals

7/28Sun
2 stops
20h 56mIAH-LIS
$591
7/28Sun
1 stop
16h 54mIAH-LIS
$620
9/24Tue
2 stopsTAP AIR PORTUGAL
26h 20mIAH-OPO
$628
9/24Tue
1 stopTAP AIR PORTUGAL
14h 01mIAH-OPO
$737
6/24Mon
1 stopBritish Airways
20h 25mIAH-LIS
$857
9/24Tue
1 stopAir Canada
15h 05mIAH-LIS
$870
10/21Mon
1 stopBritish Airways
15h 15mIAH-LIS
$874
7/28Sun
2 stopsDelta
15h 56mHOU-LIS
$874
6/26Wed
2 stopsDelta
20h 26mHOU-OPO
$892
5/28Tue
1 stopAir Canada
18h 50mIAH-LIS
$956

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Last minute flights from Houston to Portugal

Last minute flight, train and bus deals

5/27Mon
multi-stop
32h 50mIAH-OPO
6/20Thu
multi-stop
23h 48mOPO-IAH
$1,406
5/28Tue
multi-stopUnited Airlines
16h 30mIAH-LIS
6/3Mon
multi-stopUnited Airlines
32h 50mLIS-IAH
$1,573
5/27Mon
multi-stopUnited Airlines
13h 55mIAH-OPO
6/20Thu
multi-stopUnited Airlines
17h 55mOPO-IAH
$1,575
5/24Fri
multi-stop
27h 45mIAH-LIS
5/27Mon
multi-stop
29h 31mLIS-IAH
$1,687
5/27Mon
multi-stopDelta
23h 06mHOU-OPO
6/20Thu
multi-stopDelta
23h 21mOPO-HOU
$1,880
5/28Tue
multi-stopDelta
19h 59mHOU-LIS
6/3Mon
multi-stopDelta
18h 21mLIS-HOU
$1,914
5/24Fri
multi-stopTurkish Airlines
31h 00mIAH-LIS
5/27Mon
multi-stopTurkish Airlines
32h 45mLIS-IAH
$2,402
5/24Fri
multi-stopAir Canada
22h 05mIAH-LIS
5/26Sun
multi-stopAir Canada
26h 56mLIS-IAH
$2,712
5/24Fri
multi-stopAir Canada
15h 40mIAH-LIS
5/26Sun
multi-stopAir Canada
35h 33mLIS-IAH
$2,981
5/24Fri
multi-stopBritish Airways
28h 53mHOU-LIS
5/26Sun
multi-stopBritish Airways
31h 12mLIS-HOU
$3,230

Search by stops

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