Find Cheap Flights from Chicago 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 Chicago to Portugal

(Round-trip)
Depart: Sun Oct 8 2017 Return: Mon Oct 23 2017 Trip spans 16 days
British Airways
British Airways
ORD
LIS
15h 25m
1 stop
LIS
ORD
32h 00m
1 stop
Depart: Fri Feb 9 2018 Return: Sun Feb 11 2018 Trip spans 3 days
United
United
ORD
LIS
14h 50m
1 stop
LIS
ORD
15h 48m
1 stop
Depart: Sun Nov 12 2017 Return: Tue Nov 21 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
ORD
LIS
29h 55m
2 stops
LIS
ORD
35h 10m
1 stop
Depart: Tue Oct 3 2017 Return: Mon Oct 9 2017 Trip spans 7 days
Aer Lingus
Aer Lingus
ORD
LIS
19h 20m
1 stop
LIS
ORD
21h 35m
1 stop
Depart: Tue Sep 12 2017 Return: Tue Oct 24 2017 Trip spans 43 days
Turkish Airlines
Turkish Airlines
ORD
OPO
34h 55m
1 stop
OPO
ORD
35h 20m
1 stop
Depart: Wed Jan 3 2018 Return: Fri Jan 12 2018 Trip spans 10 days
British Airways
British Airways
ORD
LIS
11h 55m
1 stop
LIS
ORD
30h 40m
1 stop
Depart: Mon Sep 11 2017 Return: Tue Sep 19 2017 Trip spans 9 days
Aer Lingus
Aer Lingus
ORD
LIS
19h 20m
1 stop
LIS
ORD
21h 35m
1 stop
Depart: Sun Nov 5 2017 Return: Sun Nov 19 2017 Trip spans 15 days
Turkish Airlines
Turkish Airlines
ORD
OPO
34h 55m
1 stop
OPO
ORD
35h 40m
1 stop
Depart: Wed Nov 15 2017 Return: Wed Nov 29 2017 Trip spans 15 days
Multiple Airlines
Multiple Airlines
MDW
LIS
20h 35m
2 stops
LIS
MDW
18h 12m
2 stops
Depart: Wed Feb 7 2018 Return: Wed Feb 21 2018 Trip spans 15 days
$1338
Select
Delta
Delta
MDW
LIS
16h 25m
2 stops
LIS
MDW
16h 57m
2 stops
Depart: Tue Dec 5 2017 Return: Wed Dec 20 2017 Trip spans 16 days
British Airways
British Airways
ORD
LIS
16h 45m
1 stop
LIS
ORD
25h 40m
1 stop
Depart: Sun Feb 11 2018 Return: Sun Feb 18 2018 Trip spans 8 days
$1381
Select
KLM
KLM
MDW
LIS
16h 00m
2 stops
LIS
MDW
23h 10m
2 stops
Depart: Thu Sep 28 2017 Return: Mon Oct 9 2017 Trip spans 12 days
Aer Lingus
Aer Lingus
ORD
LIS
12h 45m
1 stop
LIS
ORD
21h 35m
1 stop
Depart: Mon Nov 20 2017 Return: Sun Nov 26 2017 Trip spans 7 days
British Airways
British Airways
ORD
LIS
11h 55m
1 stop
LIS
ORD
34h 10m
1 stop
Depart: Sun Feb 11 2018 Return: Sun Feb 18 2018 Trip spans 8 days
British Airways
British Airways
ORD
LIS
22h 50m
1 stop
LIS
ORD
28h 10m
1 stop
Depart: Fri Oct 13 2017 Return: Sun Oct 22 2017 Trip spans 10 days
Aer Lingus
Aer Lingus
ORD
FAO
18h 00m
1 stop
FAO
ORD
22h 55m
1 stop
Depart: Sat Sep 16 2017 Return: Sat Sep 23 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
ORD
PDL
30h 36m
1 stop
PDL
ORD
21h 42m
1 stop
Depart: Fri Dec 8 2017 Return: Wed Dec 13 2017 Trip spans 6 days
British Airways
British Airways
ORD
LIS
11h 55m
1 stop
LIS
ORD
22h 55m
1 stop
Depart: Wed Feb 7 2018 Return: Mon Feb 19 2018 Trip spans 13 days
Multiple Airlines
Multiple Airlines
ORD
OPO
13h 10m
1 stop
OPO
ORD
12h 15m
1 stop
Depart: Thu Dec 28 2017 Return: Sun Jan 7 2018 Trip spans 11 days
Aer Lingus
Aer Lingus
ORD
LIS
19h 45m
1 stop
LIS
ORD
28h 10m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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,
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Airports
Origin

Chicago
only $531
only $660
Destination

Ponta Delgada
$839
Porto
$660
Lisbon
$531
Faro
$724