$277+ Cheap flights from Chicago (CHI) to Portugal
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Portugal with Cheapflights
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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 September 18, 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 September 18, 2026.
This lol.travel deal was found by Cheapflights users on 9/18. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:15 pm -
1 stop15h 30m
Fri 11/205:45 pm -
1 stop29h 00m
Deal found 9/18![Scandinavian Airlines logo]()
$470
This Gotogate deal was found by Cheapflights users on 9/16. 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.
Mon 10/1911:05 am -
1 stop13h 45m
Wed 11/412:35 pm -
1 stop13h 30m
Deal found 9/16![Multiple Airlines logo]()
$566
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/319:48 pm -
1 stop30h 42m
Thu 11/1912:35 pm -
1 stop14h 55m
Deal found 9/16![United Airlines logo]()
$574
This Iberia deal was found by Cheapflights users on 9/16. 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.
Tue 11/35:40 pm -
1 stop16h 20m
Tue 11/178:20 am -
1 stop12h 35m
Deal found 9/16![Multiple Airlines logo]()
$575
This Orbitz deal was found by Cheapflights users on 9/16. 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.
Wed 10/144:55 pm -
1 stop12h 50m
Wed 11/48:20 am -
1 stop12h 35m
Deal found 9/16![Iberia logo]()
$576
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:30 pm -
1 stop14h 15m
Tue 11/178:20 am -
1 stop12h 35m
Deal found 9/14![British Airways logo]()
$581
This British Airways deal was found by Cheapflights users on 9/14. 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 10/197:05 pm -
1 stop19h 00m
Wed 11/48:40 pm -
2 stops26h 15m
Deal found 9/14![British Airways logo]()
$583
This Delta deal was found by Cheapflights users on 9/14. 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 10/191:50 pm -
1 stop14h 40m
Wed 11/45:00 am -
1 stop15h 25m
Deal found 9/14![Delta logo]()
$584
This Delta deal was found by Cheapflights users on 9/16. 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 11/49:29 am -
2 stops16h 46m
Tue 11/105:55 am -
2 stops16h 44m
Deal found 9/16![Delta logo]()
$603
This Air France deal was found by Cheapflights users on 9/15. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:49 pm -
2 stops16h 46m
Tue 11/35:00 am -
2 stops19h 00m
Deal found 9/15![Multiple Airlines logo]()
$618
This KLM deal was found by Cheapflights users on 9/14. 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 10/191:27 pm -
2 stops15h 13m
Wed 11/45:55 am -
2 stops16h 52m
Deal found 9/14![Multiple Airlines logo]()
$620
This Gotogate deal was found by Cheapflights users on 9/18. 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 11/87:15 pm -
1 stop36h 55m
Tue 11/173:55 pm -
2 stops54h 50m
Deal found 9/18![Scandinavian Airlines logo]()
$620
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 September 18, 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 September 18, 2026.
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 11/77:48 pm -
1 stop31h 42m
Fri 11/2012:35 pm -
2 stops27h 10m
Deal found 9/18![United Airlines logo]()
$574
This Delta deal was found by Cheapflights users on 9/14. 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 10/191:50 pm -
1 stop14h 40m
Wed 11/45:00 am -
1 stop15h 25m
Deal found 9/14![Delta logo]()
$584
This Finnair deal was found by Cheapflights users on 9/14. 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.
Sun 2/145:40 pm -
1 stop20h 20m
Mon 2/228:40 pm -
2 stops29h 50m
Deal found 9/14![Multiple Airlines logo]()
$598
This KLM deal was found by Cheapflights users on 9/18. 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 11/96:00 pm -
2 stops33h 35m
Wed 11/1810:25 am -
1 stop34h 00m
Deal found 9/18![KLM logo]()
$628
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 pm -
1 stop19h 50m
Thu 10/2210:45 am -
1 stop34h 15m
Deal found 9/16![TAP AIR PORTUGAL logo]()
$828
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:45 pm -
1 stop21h 15m
Fri 10/2311:45 am -
1 stop13h 30m
Deal found 9/17![Aer Lingus logo]()
$869
This Scandinavian Airlines deal was found by Cheapflights users on 9/16. 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 1/87:00 am -
2 stops26h 35m
Sat 1/162:35 pm -
2 stops32h 10m
Deal found 9/16![Scandinavian Airlines logo]()
$874
This British Airways deal was found by Cheapflights users on 9/13. 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 11/239:50 pm -
1 stop30h 40m
Thu 12/310:55 am -
1 stop32h 50m
Deal found 9/13![British Airways logo]()
$884
This Finnair deal was found by Cheapflights users on 9/16. 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.
Sun 11/16:05 pm -
2 stops36h 55m
Thu 11/126:30 am -
2 stops22h 00m
Deal found 9/16![Finnair logo]()
$907
This SWISS deal was found by Cheapflights users on 9/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:05 pm -
2 stops15h 40m
Sun 10/115:55 am -
1 stop36h 40m
Deal found 9/15![SWISS logo]()
$1,023
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 12/25:30 pm -
1 stop10h 00m
Fri 12/1112:35 pm -
1 stop13h 31m
Deal found 9/14![United Airlines logo]()
$585
This KLM deal was found by Cheapflights users on 9/14. 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 10/191:27 pm -
2 stops15h 13m
Wed 11/45:55 am -
2 stops16h 52m
Deal found 9/14![Multiple Airlines logo]()
$620
This Delta deal was found by Cheapflights users on 9/14. 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 11/95:13 pm -
2 stops16h 12m
Wed 11/185:00 am -
2 stops17h 18m
Deal found 9/14![Delta logo]()
$630
This KLM deal was found by Cheapflights users on 9/14. 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 1/205:45 pm -
2 stops41h 25m
Wed 1/2710:25 am -
1 stop34h 00m
Deal found 9/14![KLM logo]()
$695
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sun 11/112:29 pm -
2 stops15h 01m
Sun 11/86:00 am -
1 stop13h 10m
Deal found 9/16![United Airlines logo]()
$646
This Delta deal was found by Cheapflights users on 9/16. 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 11/36:25 pm -
1 stop21h 35m
Sun 11/85:55 am -
1 stop16h 20m
Deal found 9/16![Delta logo]()
$654
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/317:48 pm -
1 stop32h 42m
Wed 11/1112:35 pm -
1 stop13h 30m
Deal found 9/16![United Airlines logo]()
$653
This Delta deal was found by Cheapflights users on 9/16. 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 2/141:35 pm -
2 stops15h 00m
Mon 2/226:25 am -
2 stops21h 39m
Deal found 9/16![Delta logo]()
$673
This KLM deal was found by Cheapflights users on 9/16. 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 10/205:29 pm -
2 stops33h 46m
Fri 10/306:00 pm -
1 stop26h 25m
Deal found 9/16![KLM logo]()
$769
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/16. 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.
Fri 1/88:10 pm -
1 stop18h 05m
Sat 1/169:15 pm -
1 stop24h 15m
Deal found 9/16![TAP AIR PORTUGAL logo]()
$865
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Thu 10/2912:59 pm -
1 stop15h 31m
Thu 11/512:35 pm -
1 stop30h 35m
Deal found 9/13![United Airlines logo]()
$662
This Turkish Airlines deal was found by Cheapflights users on 9/14. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:15 pm -
2 stops33h 45m
Thu 11/1211:50 am -
2 stops35h 30m
Deal found 9/14![Turkish Airlines logo]()
$1,778
This Delta deal was found by Cheapflights users on 9/16. 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 2/141:00 pm -
2 stops15h 35m
Mon 2/225:00 am -
2 stops19h 37m
Deal found 9/16![Delta logo]()
$673
This British Airways deal was found by Cheapflights users on 9/13. 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 11/269:50 pm -
1 stop31h 10m
Wed 12/26:45 pm -
1 stop30h 00m
Deal found 9/13![British Airways logo]()
$923
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Fri 10/1611:15 am -
2 stops21h 40m
Fri 10/238:00 pm -
2 stops25h 55m
Deal found 9/17![Multiple Airlines logo]()
$868
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/14. 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 11/298:10 pm -
1 stop15h 00m
Thu 12/39:15 pm -
1 stop24h 15m
Deal found 9/14![TAP AIR PORTUGAL logo]()
$896
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/249:00 am -
2 stops18h 30m
Tue 12/112:35 pm -
2 stops16h 54m
Deal found 9/13![United Airlines logo]()
$678
This Delta deal was found by Cheapflights users on 9/13. 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 11/2510:34 am -
2 stops15h 41m
Tue 12/15:00 am -
2 stops19h 01m
Deal found 9/13![Delta logo]()
$693
This British Airways deal was found by Cheapflights users on 9/13. 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 11/269:50 pm -
1 stop31h 10m
Thu 12/310:55 am -
1 stop32h 50m
Deal found 9/13![British Airways logo]()
$923
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Wed 11/258:50 am -
2 stops18h 40m
Tue 12/112:35 pm -
1 stop13h 31m
Deal found 9/13![United Airlines logo]()
$678
Last-minute flights from Chicago to PortugalDiscover last-minute flight deals from Chicago to Portugal. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Portugal. Data last updated September 18, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 pm -
1 stop21h 05m
Thu 10/2210:00 pm -
1 stop24h 00m
Deal found 9/17![TAP AIR PORTUGAL logo]()
$653
This Orbitz deal was found by Cheapflights users on 9/16. 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.
Wed 10/144:55 pm -
1 stop12h 50m
Wed 11/48:20 am -
1 stop12h 35m
Deal found 9/16![Iberia logo]()
$576
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 pm -
1 stop19h 50m
Wed 10/213:30 pm -
1 stop26h 10m
Deal found 9/17![TAP AIR PORTUGAL logo]()
$655
This Gotogate deal was found by Cheapflights users on 9/16. 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.
Mon 10/1911:05 am -
1 stop13h 45m
Wed 11/412:35 pm -
1 stop13h 30m
Deal found 9/16![Multiple Airlines logo]()
$566
This British Airways deal was found by Cheapflights users on 9/14. 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 10/197:05 pm -
1 stop19h 00m
Wed 11/48:40 pm -
2 stops26h 15m
Deal found 9/14![British Airways logo]()
$583
This Delta deal was found by Cheapflights users on 9/14. 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 10/191:50 pm -
1 stop14h 40m
Wed 11/45:00 am -
1 stop15h 25m
Deal found 9/14![Delta logo]()
$584
This KLM deal was found by Cheapflights users on 9/14. 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 10/191:27 pm -
2 stops15h 13m
Wed 11/45:55 am -
2 stops16h 52m
Deal found 9/14![Multiple Airlines logo]()
$620
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:00 pm -
1 stop24h 10m
Thu 10/296:10 pm -
1 stop27h 20m
Deal found 9/17![TAP AIR PORTUGAL logo]()
$654
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 pm -
1 stop13h 15m
Fri 10/304:10 am -
1 stop17h 20m
Deal found 9/15![TAP AIR PORTUGAL logo]()
$657
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:40 pm -
1 stop16h 20m
Tue 11/312:25 pm -
2 stops15h 29m
Deal found 9/15![Iberia logo]()
$586
This Air France deal was found by Cheapflights users on 9/15. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:49 pm -
2 stops16h 46m
Tue 11/35:00 am -
2 stops19h 00m
Deal found 9/15![Multiple Airlines logo]()
$618
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/319:48 pm -
1 stop30h 42m
Thu 11/1912:35 pm -
1 stop14h 55m
Deal found 9/16![United Airlines logo]()
$574
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 September 18, 2026.
Search for one-way flight options from Chicago to Portugal. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Sun 10/1810:25 pm -
3 stops41h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Tue 9/297:25 pm -
2 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:25 pm -
2 stops19h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:30 pm -
2 stops36h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 9/297:25 pm -
2 stops15h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:30 pm -
3 stops55h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/173:20 pm -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:30 pm -
3 stops22h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:30 pm -
3 stops46h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$326
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Thu 10/152:15 pm -
2 stops25h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/207:25 pm -
3 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$341
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 2/11:55 pm -
2 stops16h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$347
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 September 18, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $470 (lol.travel) |
One-way from | $277 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $901 |
Good round-trip deal | $727 or less |
Good one-way deal | $476 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 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Chicago to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoFaro
ORD Chicago O'Hare Intl - FAO Faro
ORDFAO
Chicago O'Hare Intl
Tue 11/24
6:30 pm-12:30 pm
2 stops36h 00m
Faro
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$310
ChicagoFaro
ORD Chicago O'Hare Intl - FAO Faro
ORDFAO
Chicago O'Hare Intl
Mon 11/23
6:30 pm-10:45 pm
3 stops22h 15m
Faro
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$325
ChicagoFunchal
ORD Chicago O'Hare Intl - FNC Funchal Madeira
ORDFNC
Chicago O'Hare Intl
Thu 10/22
5:30 pm-11:40 pm
2 stops48h 10m
Funchal Madeira
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$355
ChicagoPorto
ORD Chicago O'Hare Intl - OPO Porto
ORDOPO
Chicago O'Hare Intl
Thu 11/5
6:30 pm-11:15 pm
2 stops22h 45m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$359
ChicagoFunchal
ORD Chicago O'Hare Intl - FNC Funchal Madeira
ORDFNC
Chicago O'Hare Intl
Sun 2/28
6:30 pm-8:20 pm
3 stops19h 50m
Funchal Madeira
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$359
ChicagoPorto
MDW Chicago Midway - OPO Porto
MDWOPO
Chicago Midway
Mon 2/1
9:30 am-10:35 am
2 stops19h 05m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$365
ChicagoFunchal
ORD Chicago O'Hare Intl - FNC Funchal Madeira
ORDFNC
Chicago O'Hare Intl
Mon 3/1
5:55 pm-9:35 am
2 stops33h 40m
Funchal Madeira
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$369
ChicagoPorto
ORD Chicago O'Hare Intl - OPO Porto
ORDOPO
Chicago O'Hare Intl
Tue 10/13
4:55 pm-4:00 pm
1 stop17h 05m
Porto
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$375
ChicagoFaro
ORD Chicago O'Hare Intl - FAO Faro
ORDFAO
Chicago O'Hare Intl
Tue 10/13
2:15 pm-7:25 pm
2 stops23h 10m
Faro
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$399
ChicagoFaro
ORD Chicago O'Hare Intl - FAO Faro
ORDFAO
Chicago O'Hare Intl
Fri 9/25
3:50 pm-6:45 pm
3 stops44h 55m
Faro
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$402
Showing 1-10 of 60 resultsSorted by cheapest first
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
MDW-OPO
ORD-FNC
ORD-PDL
ORD-FAO
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
MDW-OPO
ORD-FNC
ORD-PDL
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 $595). Flying from Chicago to Portugal in June is currently the most expensive (average of $1,162). 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.
What is the cheapest time of day to fly from CHI to PT?
Find hourly flight availability from Chicago to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 18, 2026.
When flying from Chicago to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from Chicago to Portugal delayed?
About 28% of weekly flights between Chicago and Portugal have experienced delays in the past year, with the average delay time being 132 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 28% of flights being delayed.
How far ahead should I book a flight from Chicago to Portugal?
To ensure you get the cheapest price possible for a flight from Chicago to Portugal, you should look to book at least 2 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 September 18, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAer Lingus 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.
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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.
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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 September 18, 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 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$334 | Average$583 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$373 | Average$470 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$451 | Average$839 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$456 | Average$628 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$470 | Average$605 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$474 | Average$763 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$485 | Average$797 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$489 | Average$1,110 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$489 | Average$760 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$492 | Average$707 | FlexibilityNo cancel fee | On-time75% |