$237+ Cheap flights from Chicago (CHI) to Portugal
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Mar 23 — Mar 301
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Chicago to Portugal with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Chicago to Portugal
Cheapest
Best
Last-minute
One-way
Cheapest flights from Chicago to PortugalExplore the most affordable flight options available from Chicago to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.
Explore the most affordable flight options available from Chicago to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.
This oojo deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:10 pm
ORD
- OPO
1 stop15h 50m
TAP AIR PORTUGAL
Wed 3/116:55 am
OPO
- ORD
1 stop14h 05m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$473
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:15 pm
ORD
- OPO
1 stop16h 25m
Scandinavian Airlines
Sun 4/266:20 pm
OPO
- ORD
1 stop27h 50m
Scandinavian Airlines
Deal found 2/21![Scandinavian Airlines logo]()
$483
This American Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:35 pm
ORD
- LIS
1 stop13h 05m
American Airlines
Fri 4/176:35 am
LIS
- ORD
1 stop13h 40m
American Airlines
Deal found 2/18![American Airlines logo]()
$484
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 pm
ORD
- FAO
1 stop10h 25m
TAP AIR PORTUGAL
Thu 4/236:10 pm
FAO
- ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 2/20![TAP AIR PORTUGAL logo]()
$485
This Orbitz deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:00 pm
ORD
- LIS
2 stops13h 20m
Multiple Airlines
Tue 12/86:10 am
LIS
- ORD
1 stop18h 15m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$486
This oojo deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 pm
ORD
- FAO
1 stop10h 25m
TAP AIR PORTUGAL
Fri 4/246:05 am
FAO
- ORD
1 stop15h 55m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:40 pm
ORD
- LIS
1 stop12h 10m
Iberia
Tue 3/36:30 am
LIS
- ORD
1 stop14h 25m
Iberia
Deal found 2/18![Iberia logo]()
$487
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/242:30 pm
ORD
- LIS
1 stop13h 45m
United Airlines
Tue 3/311:20 am
LIS
- ORD
2 stops31h 55m
United Airlines
Deal found 2/18![United Airlines logo]()
$488
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:00 am
ORD
- LIS
1 stop20h 00m
Delta
Tue 3/1011:25 am
LIS
- ORD
1 stop32h 55m
Delta
Deal found 2/18![Delta logo]()
$489
This Gotogate deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/18:25 pm
ORD
- LIS
Nonstop7h 55m
TAP AIR PORTUGAL
Wed 3/1111:25 am
LIS
- ORD
Nonstop9h 35m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$490
This British Airways deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:48 pm
ORD
- LIS
1 stop10h 07m
Multiple Airlines
Thu 3/126:30 am
LIS
- ORD
1 stop14h 25m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$491
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:04 pm
ORD
- LIS
2 stops18h 46m
Delta
Tue 4/285:00 am
LIS
- ORD
1 stop15h 15m
Delta
Deal found 2/20![Delta logo]()
$492
Best flights from Chicago to PortugalDiscover carefully curated flight deals from Chicago to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 21, 2026.
Discover carefully curated flight deals from Chicago to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 21, 2026.
This oojo deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 pm
ORD
- FAO
1 stop10h 25m
TAP AIR PORTUGAL
Thu 4/236:10 pm
FAO
- ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 2/17![TAP AIR PORTUGAL logo]()
$486
This Finnair deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:30 pm
ORD
- LIS
1 stop18h 55m
Finnair
Tue 4/286:35 am
LIS
- ORD
1 stop13h 50m
Finnair
Deal found 2/20![Finnair logo]()
$494
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:50 pm
ORD
- LIS
1 stop19h 55m
Delta
Wed 4/155:00 am
LIS
- ORD
2 stops21h 40m
Delta
Deal found 2/20![Delta logo]()
$502
This American Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:30 pm
ORD
- FNC
1 stop13h 55m
Multiple Airlines
Wed 4/221:35 pm
FNC
- ORD
2 stops24h 50m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$505
This Iberia deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/124:55 pm
ORD
- FNC
1 stop13h 45m
Iberia
Mon 4/201:20 pm
FNC
- ORD
2 stops38h 01m
Iberia
Deal found 2/18![Iberia logo]()
$516
This British Airways deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:48 pm
ORD
- LIS
1 stop10h 17m
British Airways
Tue 3/316:45 pm
LIS
- ORD
1 stop25h 05m
British Airways
Deal found 2/19![British Airways logo]()
$518
This Scandinavian Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:15 pm
ORD
- FAO
2 stops32h 20m
Scandinavian Airlines
Fri 4/247:35 pm
FAO
- ORD
2 stops26h 35m
Scandinavian Airlines
Deal found 2/18![Scandinavian Airlines logo]()
$538
This KLM deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:20 pm
ORD
- OPO
1 stop17h 10m
KLM
Thu 5/77:10 pm
OPO
- ORD
1 stop25h 05m
KLM
Deal found 2/17![KLM logo]()
$582
This Trip.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/122:20 pm
ORD
- FNC
1 stop20h 25m
SWISS
Mon 4/205:35 pm
FNC
- ORD
1 stop25h 00m
SWISS
Deal found 2/18![SWISS logo]()
$736
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:00 pm
ORD
- PDL
2 stops13h 40m
United Airlines
Fri 5/1511:00 am
PDL
- ORD
1 stop12h 21m
United Airlines
Deal found 2/18![United Airlines logo]()
$852
This oojo deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 pm
ORD
- FAO
1 stop10h 25m
TAP AIR PORTUGAL
Fri 4/246:05 am
FAO
- ORD
1 stop15h 55m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$486
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:34 pm
MDW
- LIS
2 stops15h 36m
Delta
Tue 3/315:00 am
LIS
- MDW
2 stops18h 54m
Delta
Deal found 2/19![Delta logo]()
$503
This Flysmarter deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:05 pm
ORD
- FNC
1 stop17h 05m
British Airways
Mon 4/207:00 pm
FNC
- ORD
1 stop26h 55m
British Airways
Deal found 2/17![British Airways logo]()
$535
This Delta deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:20 pm
MDW
- LIS
2 stops17h 10m
Delta
Wed 3/115:00 am
LIS
- MDW
2 stops18h 40m
Delta
Deal found 2/21![Delta logo]()
$503
This British Airways deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:55 pm
ORD
- LIS
1 stop17h 10m
Multiple Airlines
Sun 4/267:20 am
LIS
- ORD
1 stop14h 35m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$571
This KLM deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:50 pm
ORD
- OPO
1 stop19h 05m
KLM
Thu 5/75:00 am
OPO
- ORD
1 stop15h 15m
KLM
Deal found 2/17![KLM logo]()
$582
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:16 pm
MDW
- LIS
2 stops17h 29m
Delta
Tue 4/215:00 am
LIS
- MDW
2 stops19h 36m
Delta
Deal found 2/17![Delta logo]()
$507
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/89:25 pm
ORD
- OPO
1 stop12h 55m
TAP AIR PORTUGAL
Thu 3/128:00 pm
OPO
- ORD
1 stop25h 25m
TAP AIR PORTUGAL
Deal found 2/20![TAP AIR PORTUGAL logo]()
$559
This British Airways deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:05 pm
ORD
- LIS
1 stop22h 05m
British Airways
Sat 4/184:25 pm
LIS
- ORD
1 stop27h 25m
British Airways
Deal found 2/18![British Airways logo]()
$576
This KLM deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:20 pm
ORD
- FAO
1 stop33h 20m
KLM
Thu 4/308:20 pm
FAO
- ORD
1 stop23h 55m
KLM
Deal found 2/17![KLM logo]()
$584
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:20 pm
ORD
- LIS
1 stop12h 35m
Delta
Tue 5/55:35 am
LIS
- ORD
2 stops19h 24m
Delta
Deal found 2/19![Delta logo]()
$509
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:10 pm
ORD
- OPO
1 stop16h 50m
TAP AIR PORTUGAL
Sun 3/86:55 am
OPO
- ORD
1 stop13h 50m
TAP AIR PORTUGAL
Deal found 2/17![TAP AIR PORTUGAL logo]()
$581
This British Airways deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/59:15 pm
ORD
- FNC
1 stop32h 10m
British Airways
Tue 4/1412:15 pm
FNC
- ORD
1 stop31h 35m
British Airways
Deal found 2/18![British Airways logo]()
$582
This KLM deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:50 pm
ORD
- FAO
1 stop32h 30m
KLM
Mon 4/279:45 pm
FAO
- ORD
1 stop22h 30m
KLM
Deal found 2/18![KLM logo]()
$606
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:14 pm
ORD
- LIS
2 stops14h 56m
Delta
Tue 3/315:35 am
LIS
- ORD
2 stops18h 56m
Delta
Deal found 2/18![Delta logo]()
$509
This Mytrip deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/18:16 pm
ORD
- PDL
3 stops30h 59m
Multiple Airlines
Tue 3/107:25 pm
PDL
- ORD
2 stops33h 15m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$716
This KLM deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:50 pm
ORD
- FAO
1 stop20h 40m
KLM
Thu 5/148:20 pm
FAO
- ORD
1 stop23h 55m
KLM
Deal found 2/19![KLM logo]()
$606
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/41:29 pm
MDW
- LIS
2 stops15h 06m
Delta
Tue 3/105:00 am
LIS
- MDW
2 stops17h 22m
Delta
Deal found 2/18![Delta logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 pm
ORD
- FNC
1 stop15h 35m
TAP AIR PORTUGAL
Fri 5/89:25 am
FNC
- ORD
1 stop12h 35m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$620
This KLM deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:50 pm
ORD
- FAO
1 stop32h 20m
KLM
Wed 5/134:20 pm
FAO
- ORD
1 stop27h 55m
KLM
Deal found 2/18![KLM logo]()
$607
Last-minute flights from Chicago to PortugalDiscover last-minute flight deals from Chicago to Portugal. Data last updated February 21, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Portugal. Data last updated February 21, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/232:00 pm
ORD
- LIS
1 stop13h 20m
Air Canada
Tue 3/311:20 am
LIS
- ORD
2 stops33h 23m
Air Canada
Deal found 2/17![Air Canada logo]()
$492
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/242:30 pm
ORD
- LIS
1 stop13h 45m
United Airlines
Tue 3/311:20 am
LIS
- ORD
2 stops31h 55m
United Airlines
Deal found 2/18![United Airlines logo]()
$488
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:00 am
ORD
- LIS
1 stop20h 00m
Delta
Fri 3/65:30 am
LIS
- ORD
2 stops21h 09m
Delta
Deal found 2/18![Delta logo]()
$495
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:20 pm
ORD
- LIS
1 stop9h 55m
United Airlines
Thu 3/511:20 am
LIS
- ORD
1 stop14h 50m
United Airlines
Deal found 2/18![United Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:40 pm
ORD
- LIS
1 stop12h 10m
Iberia
Tue 3/36:30 am
LIS
- ORD
1 stop14h 25m
Iberia
Deal found 2/18![Iberia logo]()
$487
This Gotogate deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/18:25 pm
ORD
- LIS
Nonstop7h 55m
TAP AIR PORTUGAL
Wed 3/1111:25 am
LIS
- ORD
Nonstop9h 35m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$490
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/18:25 pm
ORD
- OPO
1 stop16h 35m
TAP AIR PORTUGAL
Sat 3/74:50 pm
OPO
- ORD
1 stop27h 55m
TAP AIR PORTUGAL
Deal found 2/20![TAP AIR PORTUGAL logo]()
$493
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/14:25 pm
ORD
- LIS
1 stop12h 10m
Delta
Tue 3/1011:25 am
LIS
- ORD
1 stop32h 55m
Delta
Deal found 2/20![Delta logo]()
$494
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:00 am
ORD
- LIS
1 stop20h 00m
Delta
Tue 3/1011:25 am
LIS
- ORD
1 stop32h 55m
Delta
Deal found 2/18![Delta logo]()
$489
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:05 pm
ORD
- LIS
2 stops19h 05m
Delta
Thu 3/1211:25 am
LIS
- ORD
1 stop32h 55m
Delta
Deal found 2/20![Delta logo]()
$493
This oojo deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:10 pm
ORD
- OPO
1 stop15h 50m
TAP AIR PORTUGAL
Wed 3/116:55 am
OPO
- ORD
1 stop14h 05m
TAP AIR PORTUGAL
Deal found 2/18![TAP AIR PORTUGAL logo]()
$473
This British Airways deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:48 pm
ORD
- LIS
1 stop10h 07m
Multiple Airlines
Thu 3/126:30 am
LIS
- ORD
1 stop14h 25m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$491
One-way flights from Chicago to PortugalSearch for one-way flight options from Chicago to Portugal. Find affordable one-way fares based on user searches. Data last updated February 21, 2026.
Search for one-way flight options from Chicago to Portugal. Find affordable one-way fares based on user searches. Data last updated February 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:25 pm
ORD
- LIS
2 stops21h 35m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:25 pm
ORD
- OPO
2 stops15h 00m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:30 pm
ORD
- LIS
2 stops19h 55m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:25 pm
ORD
- LIS
3 stops42h 45m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:30 pm
ORD
- OPO
2 stops21h 15m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:30 pm
ORD
- LIS
2 stops19h 10m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$258
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:25 pm
ORD
- LIS
2 stops19h 40m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:25 pm
ORD
- LIS
3 stops22h 25m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:30 pm
ORD
- OPO
3 stops37h 50m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:25 pm
ORD
- LIS
2 stops22h 05m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2512:05 pm
ORD
- OPO
3 stops46h 50m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/239:51 pm
MDW
- LIS
2 stops40h 19m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$286
Find flight deals from Chicago to Portugal
Keep the following information in mind while searching for Chicago to Portugal flight deals. Data was last updated February 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $473 (oojo) |
One-way from | $237 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $530 |
Good round-trip deal | $493 or less |
Good one-way deal | $393 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 21, 2026.
Use the filters below to find and compare flights from Chicago to Portugal that are best for you.
Fly from
Chicago
Fly to
Portugal
Route
Depart
Return
Price
ChicagoFaro
ORD - FAO
ORDFAO
Chicago O'Hare Intl
Fri 4/17
6:00 pm-10:25 am
1 stop10h 25m
Faro
Thu 4/23
6:10 pm-4:00 pm
1 stop27h 50m
$486
ChicagoFaro
ORD - FAO
ORDFAO
Chicago O'Hare Intl
Fri 4/17
6:00 pm-10:25 am
1 stop10h 25m
Faro
Fri 4/24
6:05 am-4:00 pm
1 stop15h 55m
$486
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Tue 4/21
10:30 pm-11:25 pm
1 stop18h 55m
Lisbon Humberto Delgado
Tue 4/28
6:35 am-2:25 pm
1 stop13h 50m
$494
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Wed 4/8
4:50 pm-6:45 pm
1 stop19h 55m
Lisbon Humberto Delgado
Wed 4/15
5:00 am-8:40 pm
2 stops21h 40m
$502
ChicagoLisbon
MDW - LIS
MDWLIS
Chicago Midway
Tue 3/17
6:34 pm-3:10 pm
2 stops15h 36m
Lisbon Humberto Delgado
Tue 3/31
5:00 am-5:54 pm
2 stops18h 54m
$503
ChicagoLisbon
MDW - LIS
MDWLIS
Chicago Midway
Tue 3/3
6:20 pm-5:30 pm
2 stops17h 10m
Lisbon Humberto Delgado
Wed 3/11
5:00 am-6:40 pm
2 stops18h 40m
$503
ChicagoFunchal
ORD - FNC
ORDFNC
Chicago O'Hare Intl
Wed 4/15
4:30 pm-12:25 pm
1 stop13h 55m
Funchal Madeira
Wed 4/22
1:35 pm-8:25 am
2 stops24h 50m
$505
ChicagoLisbon
MDW - LIS
MDWLIS
Chicago Midway
Tue 4/14
7:16 pm-6:45 pm
2 stops17h 29m
Lisbon Humberto Delgado
Tue 4/21
5:00 am-6:36 pm
2 stops19h 36m
$507
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Tue 4/28
4:20 pm-10:55 am
1 stop12h 35m
Lisbon Humberto Delgado
Tue 5/5
5:35 am-6:59 pm
2 stops19h 24m
$509
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Tue 3/17
7:14 pm-3:10 pm
2 stops14h 56m
Lisbon Humberto Delgado
Tue 3/31
5:35 am-6:31 pm
2 stops18h 56m
$509
Showing 1-10 of 60 results
Best time to book a flight from Chicago to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Chicago with our price prediction graph.
ORD-OPO
ORD-LIS
ORD-FNC
ORD-FAO
MDW-OPO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Portugal
CHI-PT0
ORD-OPO
ORD-LIS
ORD-FNC
ORD-FAO
What is the cheapest month to book a flight from Chicago to Portugal?
Currently, February is the cheapest month in which you can book a flight from Chicago to Portugal (average of $383). Flying from Chicago to Portugal in June is currently the most expensive (average of $686). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How often are flights from Chicago to Portugal delayed?
About 40% of weekly flights between Chicago and Portugal have experienced delays in the past year, with the average delay time being 142 minutes.
What is the most punctual flight time for Chicago to Portugal flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Chicago to Portugal flights?
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 39% of flights being delayed.
Reviews of airlines servicing Portugal
Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated February 21, 2026.
Read reviews from past customers who have flown United Airlines, Aer Lingus, and Air Canada from Chicago to Portugal. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.6
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Food
6.6
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Food
6.6
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Food
6.6
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Food
6.6
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Food
6.6
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from Chicago to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
Alternative routes for Chicago to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Portugal by cabin class
Find flights from Chicago to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Portugal flights
Browse other Chicago and Portugal flight options. Last updated on February 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Chicago to Portugal flights
Consider these flights traveling from Chicago to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 10 airlines flying from Chicago to Portugal
Discover the top 10 airlines that operate flights from Chicago to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$369 | Average$478 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$371 | Average$542 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$441 | Average$685 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$450 | Average$826 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$470 | Average$605 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$489 | Average$711 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$494 | Average$720 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$497 | Average$884 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$501 | Average$739 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$503 | Average$600 | FlexibilityNo cancel fee | On-time72% |