Find Deals on Flights from Chicago O'Hare International 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 O'Hare International to Portugal

(Round-trip)
Depart: Sun Aug 20 2017 Return: Thu Sep 14 2017 Trip spans 26 days
Turkish Airlines
Turkish Airlines
ORD
5:40p
OPO
1:20a
31h 40m
1 stop
OPO
11:35a
ORD
7:35p
32h 00m
1 stop
Depart: Sat Sep 30 2017 Return: Sun Oct 8 2017 Trip spans 9 days
Aer Lingus
Aer Lingus
ORD
4:20p
LIS
11:40a
19h 20m
1 stop
LIS
6:20p
ORD
3:55p
21h 35m
1 stop
Depart: Tue Apr 25 2017 Return: Sun Apr 30 2017 Trip spans 6 days
British Airways
British Airways
ORD
11:50a
LIS
12:35a
12h 45m
1 stop
LIS
7:10a
ORD
3:25p
32h 15m
1 stop
Depart: Tue Sep 26 2017 Return: Sat Sep 30 2017 Trip spans 5 days
Major Airline
Major Airline
ORD
11:10a
LIS
11:50p
12h 40m
1 stop
LIS
10:05p
ORD
12:30p
14h 25m
1 stop
Depart: Wed May 10 2017 Return: Tue May 23 2017 Trip spans 14 days
Iberia
Iberia
ORD
12:25p
OPO
1:45a
13h 20m
1 stop
OPO
4:05a
ORD
4:00p
11h 55m
1 stop
Depart: Fri Jun 16 2017 Return: Wed Jun 28 2017 Trip spans 13 days
$1134
Select
United
United
ORD
6:25a
LIS
12:35a
18h 10m
1 stop
LIS
6:05a
ORD
12:57a
18h 52m
2 stops
Depart: Tue Aug 22 2017 Return: Tue Sep 12 2017 Trip spans 22 days
$1279
Select
Air Canada
Air Canada
ORD
11:25a
LIS
1:10a
13h 45m
2 stops
LIS
8:50a
ORD
11:23p
14h 33m
2 stops
Depart: Tue Sep 12 2017 Return: Wed Sep 20 2017 Trip spans 9 days
Turkish Airlines
Turkish Airlines
ORD
5:40p
OPO
4:35a
34h 55m
1 stop
OPO
8:15a
ORD
7:35p
35h 20m
1 stop
Depart: Sun Sep 10 2017 Return: Wed Sep 20 2017 Trip spans 11 days
British Airways
British Airways
ORD
11:50a
LIS
12:35a
12h 45m
1 stop
LIS
3:25a
ORD
10:05p
18h 40m
1 stop
Depart: Fri Sep 29 2017 Return: Sat Oct 7 2017 Trip spans 9 days
Aer Lingus
Aer Lingus
ORD
4:20p
LIS
12:15a
31h 55m
1 stop
LIS
7:15a
ORD
8:15p
13h 00m
1 stop
Depart: Wed Sep 13 2017 Return: Tue Sep 26 2017 Trip spans 14 days
Turkish Airlines
Turkish Airlines
ORD
5:40p
OPO
1:20a
31h 40m
1 stop
OPO
8:15a
ORD
7:35p
35h 20m
1 stop
Depart: Sat Aug 12 2017 Return: Sat Aug 26 2017 Trip spans 15 days
British Airways
British Airways
ORD
11:00a
LIS
11:15p
12h 15m
1 stop
LIS
7:15a
ORD
3:55p
32h 40m
1 stop
Depart: Sat May 13 2017 Return: Wed May 24 2017 Trip spans 12 days
Major Airline
Major Airline
ORD
8:15a
LIS
9:10p
12h 55m
1 stop
LIS
4:50a
ORD
7:38p
14h 48m
1 stop
Depart: Mon Sep 4 2017 Return: Thu Oct 19 2017 Trip spans 46 days
Aer Lingus
Aer Lingus
ORD
11:50a
LIS
11:40a
23h 50m
1 stop
LIS
7:15a
ORD
8:15p
13h 00m
1 stop
Depart: Thu Sep 14 2017 Return: Tue Sep 26 2017 Trip spans 13 days
Turkish Airlines
Turkish Airlines
ORD
5:40p
OPO
4:35a
34h 55m
1 stop
OPO
8:15a
ORD
7:35p
35h 20m
1 stop
Depart: Mon Sep 11 2017 Return: Thu Sep 14 2017 Trip spans 4 days
Iberia
Iberia
ORD
2:55p
OPO
12:35a
33h 40m
2 stops
OPO
4:05a
ORD
4:10p
12h 05m
1 stop
Depart: Wed May 3 2017 Return: Wed May 17 2017 Trip spans 15 days
British Airways
British Airways
ORD
11:50a
LIS
11:40a
23h 50m
1 stop
LIS
7:10a
ORD
10:00p
14h 50m
1 stop
Depart: Sat Sep 23 2017 Return: Tue Oct 3 2017 Trip spans 11 days
Aer Lingus
Aer Lingus
ORD
11:50a
LIS
12:15a
12h 25m
1 stop
LIS
6:20p
ORD
8:15p
25h 55m
1 stop
Depart: Sun Sep 17 2017 Return: Tue Sep 26 2017 Trip spans 10 days
Turkish Airlines
Turkish Airlines
ORD
5:40p
OPO
1:20a
31h 40m
1 stop
OPO
8:15a
ORD
7:35p
35h 20m
1 stop
Depart: Wed May 24 2017 Return: Sun Jun 4 2017 Trip spans 12 days
Major Airline
Major Airline
ORD
9:40a
LIS
9:10p
11h 30m
1 stop
LIS
4:50a
ORD
4:53p
12h 03m
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,
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Airports
Origin

Chicago
$727
Destination

Porto
$727
Lisbon
$739