Find Cheap Flights to Portugal

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Houston George Bush Intcntl to Portugal

(Round-trip)
Depart: Tue Oct 24 2017 Return: Wed Nov 8 2017 Trip spans 16 days
American Airlines
American Airlines
IAH
12:00a
LIS
9:15p
21h 15m
1 stop
LIS
12:00a
IAH
5:04p
17h 04m
2 stops
Depart: Mon Oct 30 2017 Return: Mon Nov 6 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
IAH
12:00a
OPO
6:03p
18h 03m
2 stops
OPO
12:00a
IAH
5:49p
17h 49m
2 stops
Depart: Sun Dec 31 2017 Return: Mon Jan 8 2018 Trip spans 9 days
Iberia
Iberia
IAH
12:00a
OPO
3:30p
15h 30m
2 stops
OPO
12:00a
IAH
9:01p
21h 01m
2 stops
Depart: Sat Oct 14 2017 Return: Sun Oct 22 2017 Trip spans 9 days
British Airways
British Airways
IAH
12:00a
LIS
3:40p
15h 40m
1 stop
LIS
12:00a
IAH
1:25a
25h 25m
1 stop
Depart: Sun Sep 24 2017 Return: Tue Oct 10 2017 Trip spans 17 days
Iberia
Iberia
IAH
12:00a
LIS
4:03p
16h 03m
2 stops
LIS
12:00a
IAH
10:24p
22h 24m
2 stops
Depart: Wed Sep 6 2017 Return: Tue Sep 26 2017 Trip spans 21 days
Multiple Airlines
Multiple Airlines
IAH
12:00a
LIS
7:50a
31h 50m
1 stop
LIS
12:00a
IAH
5:30p
41h 30m
2 stops
Depart: Tue Oct 10 2017 Return: Thu Oct 19 2017 Trip spans 10 days
Finnair
Finnair
IAH
12:00a
LIS
8:30p
20h 30m
1 stop
LIS
12:00a
IAH
10:04p
22h 04m
2 stops
Depart: Sat Dec 16 2017 Return: Wed Jan 10 2018 Trip spans 26 days
Aer Lingus
Aer Lingus
IAH
12:00a
LIS
7:45p
19h 45m
2 stops
LIS
12:00a
IAH
6:55a
30h 55m
2 stops
Depart: Wed Sep 6 2017 Return: Mon Sep 18 2017 Trip spans 13 days
British Airways
British Airways
IAH
12:00a
LIS
3:40p
15h 40m
1 stop
LIS
12:00a
IAH
5:10p
17h 10m
1 stop
Depart: Tue Sep 5 2017 Return: Tue Sep 12 2017 Trip spans 8 days
Turkish Airlines
Turkish Airlines
IAH
12:00a
LIS
7:35a
31h 35m
1 stop
LIS
12:00a
IAH
1:35p
37h 35m
1 stop
Depart: Mon Sep 25 2017 Return: Tue Oct 10 2017 Trip spans 16 days
Iberia
Iberia
IAH
12:00a
LIS
5:13p
17h 13m
2 stops
LIS
12:00a
IAH
10:24p
22h 24m
2 stops
Depart: Tue Dec 12 2017 Return: Wed Jan 10 2018 Trip spans 30 days
$1049
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TAP Portugal
TAP Portugal
IAH
12:00a
LIS
6:00p
18h 00m
1 stop
LIS
12:00a
IAH
3:04p
15h 04m
1 stop
Depart: Thu Oct 19 2017 Return: Wed Oct 25 2017 Trip spans 7 days
Multiple Airlines
Multiple Airlines
IAH
12:00a
LIS
10:45p
22h 45m
2 stops
LIS
12:00a
IAH
1:25a
25h 25m
1 stop
Depart: Thu Sep 7 2017 Return: Mon Sep 18 2017 Trip spans 12 days
British Airways
British Airways
IAH
12:00a
LIS
8:35p
20h 35m
1 stop
LIS
12:00a
IAH
5:10p
17h 10m
1 stop
Depart: Tue Sep 26 2017 Return: Tue Oct 10 2017 Trip spans 15 days
Iberia
Iberia
IAH
12:00a
LIS
5:13p
17h 13m
2 stops
LIS
12:00a
IAH
10:24p
22h 24m
2 stops
Depart: Sun Sep 24 2017 Return: Sun Oct 8 2017 Trip spans 15 days
Multiple Airlines
Multiple Airlines
IAH
12:00a
LIS
8:45p
20h 45m
1 stop
LIS
12:00a
IAH
1:25a
25h 25m
1 stop
Depart: Sat Sep 9 2017 Return: Mon Sep 18 2017 Trip spans 10 days
British Airways
British Airways
IAH
12:00a
LIS
8:50p
20h 50m
1 stop
LIS
12:00a
IAH
5:10p
17h 10m
1 stop
Depart: Mon Oct 9 2017 Return: Tue Oct 24 2017 Trip spans 16 days
Iberia
Iberia
IAH
12:00a
LIS
5:13p
17h 13m
2 stops
LIS
12:00a
IAH
10:04p
22h 04m
2 stops
Depart: Fri Oct 13 2017 Return: Sat Oct 21 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
IAH
12:00a
LIS
8:45p
20h 45m
1 stop
LIS
12:00a
IAH
1:25a
25h 25m
1 stop
Depart: Sun Sep 10 2017 Return: Mon Sep 18 2017 Trip spans 9 days
British Airways
British Airways
IAH
12:00a
LIS
3:40p
15h 40m
1 stop
LIS
12:00a
IAH
5:10p
17h 10m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Houston
$441
Destination

Porto
$454
Lisbon
$441