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Flight Deals from Chicago to Porto from $276

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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
    $513
  • Up to 2 stops
    $507

Airlines

  • American Airlines
    $677
  • Austrian Airlines
    $513
  • British Airways
    $530
  • Brussels Airlines
    $530
  • Finnair
    $707
  • IBERIA
    $691
  • Lufthansa
    $507
  • SWISS
    $517
  • TAP Portugal
    $606
  • Turkish Airlines
    $673
  • United Airlines
    $606

Cabin Class

  • Economy
    $507

Departure Airports

  • Chicago O Hare Airport
    $507

Arrival Airports

  • Francisco de Sá Carneiro Airport
    $507

Layover Airports

  • Adolfo Suárez Madrid–Barajas Airport
    $530
  • Barcelona International Airport
    $994
  • Brussels Airport
    $530
  • Dallas Fort Worth International Airport
    $942
  • Detroit Metropolitan Airport
    $708
  • Frankfurt am Main Airport
    $507
  • General Edward Lawrence Logan International Airport
    $797
  • Geneva Cointrin International Airport
    $563
  • Humberto Delgado Airport (Lisbon Portela Airport)
    $606
  • Istanbul Airport
    $673
  • London Heathrow Airport
    $626
  • Munich Airport
    $595
  • New York John F Kennedy Airport
    $530
  • Newark Liberty Airport
    $507
  • Paris Charles de Gaulle Airport
    $964
  • Reagan Washington National Airport
    $761
  • Vienna International Airport
    $513
  • Washington Dulles Airport
    $507
  • Zürich Airport
    $517

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
Lufthansa Logo
Lufthansa

03/17/26

ORD
20h 13m
IAD
EWR

03/18/26

OPO
Lufthansa Logo
Lufthansa

03/26/26

OPO
8h 10m
FRA

03/26/26

ORD
$507
Austrian Airlines Logo
Austrian Airlines

03/17/26

ORD
18h 40m
EWR

03/18/26

OPO
Austrian Airlines Logo
Austrian Airlines

03/26/26

OPO
26h 20m
VIE

03/27/26

ORD
$513
SWISS Logo
SWISS

03/17/26

ORD
39h 10m
ZRH

03/19/26

OPO
SWISS Logo
SWISS

03/26/26

OPO
10h 20m
FRA

03/26/26

ORD
$517
SWISS Logo
SWISS

03/17/26

ORD
22h 25m
ZRH

03/18/26

OPO
SWISS Logo
SWISS

03/26/26

OPO
10h 20m
FRA

03/26/26

ORD
$522
Lufthansa Logo
Lufthansa

03/17/26

ORD
22h 50m
FRA

03/18/26

OPO
Lufthansa Logo
Lufthansa

03/26/26

OPO
10h 20m
FRA

03/26/26

ORD
$524
Brussels Airlines Logo
Brussels Airlines

03/17/26

ORD
18h 10m
BRU

03/18/26

OPO
Brussels Airlines Logo
Brussels Airlines

03/26/26

OPO
10h 20m
FRA

03/26/26

ORD
$530
British Airways Logo
British Airways

03/17/26

ORD
19h 58m
JFK
MAD

03/18/26

OPO
British Airways Logo
British Airways

03/26/26

OPO
7h 10m
MAD

03/26/26

ORD
$530
Brussels Airlines Logo
Brussels Airlines

03/17/26

ORD
18h 10m
BRU

03/18/26

OPO
Brussels Airlines Logo
Brussels Airlines

03/26/26

OPO
12h 47m
FRA
EWR

03/26/26

ORD
$540
SWISS Logo
SWISS

03/17/26

ORD
36h 20m
ZRH
GVA

03/19/26

OPO
SWISS Logo
SWISS

03/26/26

OPO
10h 20m
FRA

03/26/26

ORD
$563
SWISS Logo
SWISS

03/15/26

ORD
22h 25m
ZRH

03/16/26

OPO
SWISS Logo
SWISS

03/22/26

OPO
14h 50m
MUC
FRA

03/22/26

ORD
$595
TAP Portugal Logo
TAP Portugal

03/20/26

ORD
19h 45m
LIS

03/21/26

OPO
TAP Portugal Logo
TAP Portugal

03/27/26

OPO
7h 15m
LIS

03/27/26

ORD
$606
United Airlines Logo
United Airlines

03/06/26

ORD
23h 50m
FRA

03/07/26

OPO
United Airlines Logo
United Airlines

03/15/26

OPO
8h 10m
FRA

03/15/26

ORD
$606
TAP Portugal Logo
TAP Portugal

03/06/26

ORD
19h 40m
LIS

03/07/26

OPO
TAP Portugal Logo
TAP Portugal

03/15/26

OPO
7h 5m
LIS

03/15/26

ORD
$608
SWISS Logo
SWISS

03/17/26

ORD
36h 20m
ZRH
GVA

03/19/26

OPO
SWISS Logo
SWISS

03/26/26

OPO
13h 25m
FRA
MUC

03/26/26

ORD
$608
British Airways Logo
British Airways

03/17/26

ORD
19h 18m
JFK
MAD

03/18/26

OPO
British Airways Logo
British Airways

03/26/26

OPO
11h 25m
MAD
LHR

03/26/26

ORD
$626
United Airlines Logo
United Airlines

03/06/26

ORD
22h 45m
FRA

03/07/26

OPO
United Airlines Logo
United Airlines

03/15/26

OPO
14h 50m
MUC
FRA

03/15/26

ORD
$630
Turkish Airlines Logo
Turkish Airlines

03/17/26

ORD
26h 20m
IST

03/18/26

OPO
Turkish Airlines Logo
Turkish Airlines

03/26/26

OPO
18h 55m
IST

03/27/26

ORD
$673
American Airlines Logo
American Airlines

03/17/26

ORD
18h
MAD

03/18/26

OPO
American Airlines Logo
American Airlines

03/26/26

OPO
7h 10m
MAD

03/26/26

ORD
$677
Lufthansa Logo
Lufthansa

03/20/26

ORD
24h 55m
MUC

03/21/26

OPO
Lufthansa Logo
Lufthansa

03/27/26

OPO
10h 37m
EWR
IAD

03/27/26

ORD
$686
IBERIA Logo
IBERIA

03/17/26

ORD
18h
MAD

03/18/26

OPO
IBERIA Logo
IBERIA

03/26/26

OPO
7h 10m
MAD

03/26/26

ORD
$691
IBERIA Logo
IBERIA

03/17/26

ORD
26h 15m
MAD

03/18/26

OPO
IBERIA Logo
IBERIA

03/26/26

OPO
7h 10m
MAD

03/26/26

ORD
$697
Finnair Logo
Finnair

03/17/26

ORD
22h 15m
MAD

03/18/26

OPO
Finnair Logo
Finnair

03/26/26

OPO
7h 10m
MAD

03/26/26

ORD
$707
SWISS Logo
SWISS

03/21/26

ORD
39h 5m
ZRH

03/23/26

OPO
SWISS Logo
SWISS

03/31/26

OPO
10h 36m
FRA
DTW

03/31/26

ORD
$708
IBERIA Logo
IBERIA

03/17/26

ORD
20h 15m
LHR
MAD

03/18/26

OPO
IBERIA Logo
IBERIA

03/26/26

OPO
7h 10m
MAD

03/26/26

ORD
$709
American Airlines Logo
American Airlines

03/15/26

ORD
21h 15m
LHR
MAD

03/16/26

OPO
American Airlines Logo
American Airlines

03/22/26

OPO
22h 50m
MAD

03/23/26

ORD
$736
Lufthansa Logo
Lufthansa

03/17/26

ORD
17h 25m
DCA
EWR

03/18/26

OPO
Lufthansa Logo
Lufthansa

03/26/26

OPO
10h 20m
FRA

03/26/26

ORD
$761
American Airlines Logo
American Airlines

03/21/26

ORD
18h
MAD

03/22/26

OPO
American Airlines Logo
American Airlines

03/31/26

OPO
11h 35m
MAD
BOS

03/31/26

ORD
$797
American Airlines Logo
American Airlines

03/20/26

ORD
19h 58m
JFK
MAD

03/21/26

OPO
American Airlines Logo
American Airlines

03/27/26

OPO
14h 18m
MAD
DFW

03/28/26

ORD
$942
Lufthansa Logo
Lufthansa

03/06/26

ORD
25h 10m
FRA
MUC

03/07/26

OPO
Lufthansa Logo
Lufthansa

03/15/26

OPO
33h 10m
FRA
CDG

03/16/26

ORD
$964
IBERIA Logo
IBERIA

03/28/26

ORD
37h 50m
MAD

03/30/26

OPO
IBERIA Logo
IBERIA

04/05/26

OPO
20h 55m
MAD
BCN

04/06/26

ORD
$994

Top Deals on flights from Chicago to Porto

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

TAP Portugal Logo
TAP Portugal

Aug 11

ORD
28h 45m
LIS

Aug 12

OPO

as low as

$276

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

British Airways Logo
British Airways

Jul 9

ORD
23h 25m
MAD

Jul 10

OPO

as low as

$388

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

SATA Internacional Logo
SATA Internacional

Jul 15

ORD
29h 24m
JFK

Jul 16

OPO

as low as

$401

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

United Airlines Logo
United Airlines

Oct 20

ORD
24h 45m
EWR

Oct 21

OPO

as low as

$402

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

SAS Airlines Logo
SAS Airlines

Sep 22

ORD
39h 45m
CPH

Sep 24

OPO

as low as

$443

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

British Airways Logo
British Airways

Oct 20

ORD
18h 58m
PHL
MAD

Oct 21

OPO

as low as

$451

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

SATA Internacional Logo
SATA Internacional

Oct 12

ORD
28h 55m
JFK
PDL

Oct 13

OPO

as low as

$451

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

American Airlines Logo
American Airlines

Jul 15

ORD
27h 25m
MAD

Jul 16

OPO

as low as

$452

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

British Airways Logo
British Airways

Sep 27

ORD
20h 16m
BOS
MAD

Sep 28

OPO

as low as

$453

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

American Airlines Logo
American Airlines

Oct 12

ORD
24h 40m
LHR
MAD

Oct 13

OPO

as low as

$456

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

IBERIA Logo
IBERIA

Jul 28

ORD
23h 25m
MAD

Jul 29

OPO

as low as

$466

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

Finnair Logo
Finnair

Jul 28

ORD
33h 5m
MAD

Jul 30

OPO

as low as

$480

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