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Flight Deals from Porto to Chicago from $569

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Bundle + Save

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Incredible Deals

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Save an average of $240 per person when bundling your flight and hotel together with Priceline

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Stops

  • Up to 1 stop
    $1158
  • Up to 2 stops
    $1262

Airlines

  • Air Canada
    $1589
  • Air France
    $1565
  • American Airlines
    $1262
  • British Airways
    $1403
  • KLM
    $1445
  • SWISS
    $1274
  • TAP Portugal
    $1510
  • Turkish Airlines
    $1850
  • United Airlines
    $1158

Cabin Class

  • Economy
    $1158

Departure Airports

  • Francisco de Sá Carneiro Airport
    $1158

Arrival Airports

  • Chicago O Hare Airport
    $1158

Layover Airports

  • Adolfo Suárez Madrid–Barajas Airport
    $1262
  • Amsterdam Airport Schiphol
    $1445
  • Frankfurt am Main Airport
    $1158
  • General Edward Lawrence Logan International Airport
    $1262
  • Humberto Delgado Airport (Lisbon Portela Airport)
    $1510
  • Istanbul Airport
    $1850
  • Montreal Trudeau Airport
    $1589
  • Newark Liberty Airport
    $1176
  • Paris Charles de Gaulle Airport
    $1445
  • Zürich Airport
    $1158

Best Price. GUARANTEED.

Exclusively for Priceline Members
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BUNDLE & SAVE
Book a flight & hotel together for extra savings.
On average save $240 per traveler
United Airlines Logo
United Airlines

07/25/25

OPO
14h 55m
FRA

07/25/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1158
United Airlines Logo
United Airlines

07/25/25

OPO
14h 55m
FRA

07/25/25

ORD
United Airlines Logo
United Airlines

08/01/25

ORD
32h 9m
EWR

08/03/25

OPO
$1176
United Airlines Logo
United Airlines

07/25/25

OPO
14h 55m
FRA

07/25/25

ORD
United Airlines Logo
United Airlines

08/01/25

ORD
27h 30m
EWR

08/03/25

OPO
$1176
United Airlines Logo
United Airlines

07/25/25

OPO
14h 55m
FRA

07/25/25

ORD
United Airlines Logo
United Airlines

08/01/25

ORD
31h
EWR

08/03/25

OPO
$1176
United Airlines Logo
United Airlines

07/25/25

OPO
16h 57m
EWR

07/25/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1190
United Airlines Logo
United Airlines

07/25/25

OPO
14h 10m
EWR

07/25/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1190
American Airlines Logo
American Airlines

07/25/25

OPO
12h 30m
MAD

07/25/25

ORD
American Airlines Logo
American Airlines

08/01/25

ORD
18h 41m
BOS
MAD

08/02/25

OPO
$1262
SWISS Logo
SWISS

07/25/25

OPO
23h 30m
ZRH

07/26/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1274
SWISS Logo
SWISS

07/25/25

OPO
13h 15m
ZRH

07/25/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1274
SWISS Logo
SWISS

07/25/25

OPO
23h 30m
ZRH

07/26/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
17h 25m
ZRH

08/02/25

OPO
$1320
American Airlines Logo
American Airlines

07/25/25

OPO
12h 30m
MAD

07/25/25

ORD
American Airlines Logo
American Airlines

08/01/25

ORD
11h 25m
MAD

08/02/25

OPO
$1337
American Airlines Logo
American Airlines

07/25/25

OPO
12h 30m
MAD

07/25/25

ORD
American Airlines Logo
American Airlines

08/01/25

ORD
19h 10m
BOS
MAD

08/02/25

OPO
$1342
American Airlines Logo
American Airlines

07/25/25

OPO
12h
MAD

07/25/25

ORD
American Airlines Logo
American Airlines

08/01/25

ORD
18h 41m
BOS
MAD

08/02/25

OPO
$1386
British Airways Logo
British Airways

07/25/25

OPO
12h
MAD

07/25/25

ORD
American Airlines Logo
American Airlines

08/01/25

ORD
18h 41m
BOS
MAD

08/02/25

OPO
$1403
American Airlines Logo
American Airlines

07/25/25

OPO
12h 30m
MAD

07/25/25

ORD
British Airways Logo
British Airways

08/01/25

ORD
13h 10m
MAD

08/02/25

OPO
$1412
KLM Logo
KLM

07/25/25

OPO
13h 30m
AMS

07/25/25

ORD
Air France Logo
Air France

08/01/25

ORD
33h 15m
CDG

08/03/25

OPO
$1445
KLM Logo
KLM

07/25/25

OPO
13h 30m
AMS

07/25/25

ORD
KLM Logo
KLM

08/01/25

ORD
12h 20m
AMS

08/02/25

OPO
$1449
KLM Logo
KLM

07/25/25

OPO
13h 30m
AMS

07/25/25

ORD
KLM Logo
KLM

08/01/25

ORD
17h 15m
AMS

08/02/25

OPO
$1449
British Airways Logo
British Airways

07/25/25

OPO
12h
MAD

07/25/25

ORD
American Airlines Logo
American Airlines

08/01/25

ORD
11h 25m
MAD

08/02/25

OPO
$1479
TAP Portugal Logo
TAP Portugal

07/25/25

OPO
19h 33m
EWR

07/26/25

ORD
TAP Portugal Logo
TAP Portugal

08/01/25

ORD
10h 35m
LIS

08/02/25

OPO
$1510
TAP Portugal Logo
TAP Portugal

07/25/25

OPO
20h 34m
EWR

07/26/25

ORD
TAP Portugal Logo
TAP Portugal

08/01/25

ORD
10h 35m
LIS

08/02/25

OPO
$1532
Air France Logo
Air France

07/25/25

OPO
25h 55m
CDG

07/26/25

ORD
Air France Logo
Air France

08/01/25

ORD
33h 15m
CDG

08/03/25

OPO
$1565
Air France Logo
Air France

07/25/25

OPO
25h 55m
CDG

07/26/25

ORD
KLM Logo
KLM

08/01/25

ORD
19h 55m
AMS

08/02/25

OPO
$1569
Air France Logo
Air France

07/25/25

OPO
25h 55m
CDG

07/26/25

ORD
KLM Logo
KLM

08/01/25

ORD
12h 20m
AMS

08/02/25

OPO
$1569
Air Canada Logo
Air Canada

07/25/25

OPO
15h 31m
LIS
YUL

07/25/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1589
Air Canada Logo
Air Canada

07/25/25

OPO
38h 46m
LIS
YUL

07/26/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
23h 5m
ZRH

08/03/25

OPO
$1596
Air Canada Logo
Air Canada

07/25/25

OPO
15h 31m
LIS
YUL

07/25/25

ORD
SWISS Logo
SWISS

08/01/25

ORD
17h 25m
ZRH

08/02/25

OPO
$1635
TAP Portugal Logo
TAP Portugal

07/25/25

OPO
20h 34m
EWR

07/26/25

ORD
TAP Portugal Logo
TAP Portugal

08/01/25

ORD
16h 55m
LIS

08/02/25

OPO
$1820
Turkish Airlines Logo
Turkish Airlines

07/25/25

OPO
28h 55m
IST

07/26/25

ORD
Turkish Airlines Logo
Turkish Airlines

08/01/25

ORD
31h 55m
IST

08/03/25

OPO
$1850
Turkish Airlines Logo
Turkish Airlines

07/25/25

OPO
28h 55m
IST

07/26/25

ORD
Turkish Airlines Logo
Turkish Airlines

08/01/25

ORD
16h 20m
IST

08/02/25

OPO
$1965

Top Deals on flights from Porto to Chicago

Porto, PT (OPO) - Chicago, US (CHI)

 Logo

Sep 13

OPO
20h 22m
BOS

Sep 14

ORD

as low as

$569

Porto, PT (OPO) - Chicago, US (CHI)

TAP Portugal Logo
TAP Portugal

Oct 15

OPO
14h 47m
BOS

Oct 16

ORD

as low as

$598

Porto, PT (OPO) - Chicago, US (CHI)

TAP Portugal Logo
TAP Portugal

Sep 5

OPO
17h 55m
LIS

Sep 6

ORD

as low as

$636

Porto, PT (OPO) - Chicago, US (CHI)

Turkish Airlines Logo
Turkish Airlines

Oct 15

OPO
22h 50m
IST

Oct 16

ORD

as low as

$641

Porto, PT (OPO) - Chicago, US (CHI)

American Airlines Logo
American Airlines

Oct 15

OPO
6h
MAD

Oct 15

ORD

as low as

$674

Porto, PT (OPO) - Chicago, US (CHI)

American Airlines Logo
American Airlines

Sep 13

OPO
10h
MAD
LHR

Sep 13

ORD

as low as

$682

Porto, PT (OPO) - Chicago, US (CHI)

American Airlines Logo
American Airlines

Oct 1

OPO
10h 35m
MAD
PHL

Oct 1

ORD

as low as

$685

Porto, PT (OPO) - Chicago, US (CHI)

American Airlines Logo
American Airlines

Sep 5

OPO
12h 12m
MAD
CLT

Sep 5

ORD

as low as

$685

Porto, PT (OPO) - Chicago, US (CHI)

 Logo

Sep 5

OPO
34h 42m
PDL
BOS

Sep 7

ORD

as low as

$699

Porto, PT (OPO) - Chicago, US (CHI)

 Logo

Oct 15

OPO
17h 40m
MAD

Oct 16

ORD

as low as

$757

Porto, PT (OPO) - Chicago, US (CHI)

 Logo

Oct 15

OPO
5h 55m
MAD

Oct 15

ORD

as low as

$794

Porto, PT (OPO) - Chicago, US (CHI)

British Airways Logo
British Airways

Sep 13

OPO
10h 35m
MAD

Sep 13

ORD

as low as

$802

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