$346+ Cheap flights from Ontario (ONT) 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Oct 20 — Oct 271
Round-trip
1 adult, Economy
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Find cheap flights from Ontario 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
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Cheapest flights from Ontario to PortugalExplore the most affordable flight options available from Ontario to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 20, 2026.
Explore the most affordable flight options available from Ontario to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 20, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 am -
2 stops16h 55m
Fri 12/410:00 am -
2 stops19h 56m
Deal found 9/18![Delta logo]()
$620
This Delta deal was found by Cheapflights users on 9/19. 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.
Mon 11/1611:10 pm -
2 stops24h 50m
Wed 11/2511:15 am -
2 stops40h 34m
Deal found 9/19![Delta logo]()
$631
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.
Fri 10/2311:15 pm -
2 stops49h 45m
Mon 11/212:25 pm -
2 stops35h 58m
Deal found 9/16![Delta logo]()
$655
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:45 am -
2 stops21h 40m
Tue 10/205:00 am -
2 stops20h 12m
Deal found 9/16![Multiple Airlines logo]()
$663
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.
Fri 11/277:05 am -
2 stops16h 55m
Fri 12/410:00 am -
2 stops21h 58m
Deal found 9/16![Delta logo]()
$670
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.
Sat 10/316:00 am -
2 stops20h 00m
Mon 11/911:30 am -
2 stops44h 19m
Deal found 9/16![Delta logo]()
$681
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.
Fri 10/3012:16 pm -
2 stops37h 44m
Mon 11/911:30 am -
2 stops44h 19m
Deal found 9/16![Delta logo]()
$694
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops25h 05m
Mon 11/95:00 am -
2 stops26h 49m
Deal found 9/17![Delta logo]()
$694
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:54 am -
2 stops19h 36m
Thu 10/85:00 am -
2 stops20h 12m
Deal found 9/17![Delta logo]()
$704
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:54 am -
2 stops22h 16m
Thu 10/85:55 am -
2 stops23h 59m
Deal found 9/17![KLM logo]()
$705
This Delta deal was found by Cheapflights users on 9/19. 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.
Sat 11/1412:18 pm -
2 stops25h 42m
Sat 12/510:15 am -
2 stops20h 14m
Deal found 9/19![Delta logo]()
$722
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.
Sat 10/317:07 am -
2 stops18h 53m
Sun 11/85:30 am -
2 stops18h 53m
Deal found 9/16![Delta logo]()
$731
Best flights from Ontario to PortugalDiscover carefully curated flight deals from Ontario to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 20, 2026.
Discover carefully curated flight deals from Ontario to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 20, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/512:00 pm -
2 stops36h 00m
Wed 1/2710:00 am -
2 stops20h 14m
Deal found 9/18![Delta logo]()
$625
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.
Tue 11/37:00 am -
2 stops18h 30m
Tue 11/1012:35 pm -
2 stops31h 54m
Deal found 9/18![United Airlines logo]()
$756
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/55:00 am -
3 stops41h 55m
Tue 1/2611:20 am -
3 stops41h 00m
Deal found 9/18![Multiple Airlines logo]()
$831
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:51 pm -
2 stops34h 39m
Tue 11/1011:15 am -
2 stops39h 27m
Deal found 9/18![British Airways logo]()
$1,014
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.
Fri 10/3012:16 pm -
2 stops37h 44m
Mon 11/911:30 am -
2 stops44h 19m
Deal found 9/16![Delta logo]()
$694
This KLM deal was found by Cheapflights users on 9/19. 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.
Sun 10/259:45 am -
2 stops21h 05m
Tue 11/102:40 pm -
2 stops33h 44m
Deal found 9/19![KLM logo]()
$1,393
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops25h 05m
Mon 11/95:00 am -
2 stops26h 49m
Deal found 9/17![Delta logo]()
$694
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:25 am -
2 stops16h 55m
Wed 11/2510:15 am -
2 stops19h 25m
Deal found 9/19![United Airlines logo]()
$771
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
2 stops18h 10m
Tue 11/2410:15 am -
2 stops19h 25m
Deal found 9/19![United Airlines logo]()
$801
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.
Sat 10/317:07 am -
2 stops18h 53m
Sun 11/85:30 am -
2 stops18h 53m
Deal found 9/16![Delta logo]()
$731
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 2/136:30 am -
2 stops21h 10m
Thu 2/2512:35 pm -
2 stops18h 31m
Deal found 9/18![United Airlines logo]()
$816
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/47:00 am -
2 stops41h 00m
Fri 1/2910:00 am -
2 stops20h 14m
Deal found 9/18![Delta logo]()
$748
This Air Canada 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:25 am -
2 stops15h 30m
Wed 12/211:20 am -
2 stops17h 51m
Deal found 9/15![Multiple Airlines logo]()
$1,043
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:59 am -
2 stops19h 31m
Fri 11/612:35 pm -
2 stops38h 12m
Deal found 9/15![United Airlines logo]()
$821
This Delta deal was found by Cheapflights users on 9/19. 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.
Wed 11/1812:18 pm -
2 stops18h 52m
Wed 11/255:00 am -
2 stops20h 16m
Deal found 9/19![Delta logo]()
$753
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 am -
2 stops19h 30m
Sun 12/66:00 am -
2 stops22h 38m
Deal found 9/19![United Airlines logo]()
$830
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/310:29 pm -
2 stops49h 31m
Sun 1/2410:00 am -
2 stops20h 14m
Deal found 9/18![Delta logo]()
$798
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:00 am -
2 stops44h 30m
Sat 11/712:30 pm -
2 stops37h 26m
Deal found 9/15![United Airlines logo]()
$845
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:35 pm -
3 stops27h 15m
Thu 10/226:15 pm -
3 stops32h 25m
Deal found 9/18![Multiple Airlines logo]()
$1,252
This Delta deal was found by Cheapflights users on 9/19. 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.
Wed 11/187:00 am -
2 stops24h 10m
Thu 11/265:30 am -
2 stops21h 00m
Deal found 9/19![Delta logo]()
$835
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.
Wed 12/25:00 am -
3 stops21h 20m
Sun 12/610:15 am -
2 stops18h 56m
Deal found 9/16![United Airlines logo]()
$851
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:05 pm -
2 stops20h 45m
Thu 10/157:55 pm -
2 stops30h 49m
Deal found 9/17![British Airways logo]()
$1,660
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am -
2 stops24h 55m
Tue 10/203:45 pm -
2 stops37h 26m
Deal found 9/17![Multiple Airlines logo]()
$1,376
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:00 am -
2 stops16h 10m
Tue 10/2712:35 pm -
2 stops37h 12m
Deal found 9/15![United Airlines logo]()
$894
This United Airlines deal was found by Cheapflights users on 9/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/156:30 am -
2 stops21h 15m
Wed 3/36:00 am -
3 stops22h 20m
Deal found 9/20![United Airlines logo]()
$936
This Booking.com deal was found by Cheapflights users on 9/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1912:41 pm -
2 stops21h 19m
Sat 1/96:55 pm -
2 stops31h 58m
Deal found 9/19![British Airways logo]()
$1,839
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:05 pm -
1 stop24h 40m
Mon 10/125:30 pm -
1 stop35h 42m
Deal found 9/15![Multiple Airlines logo]()
$1,573
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.
Tue 10/62:22 pm -
2 stops20h 28m
Mon 10/127:45 pm -
2 stops27h 39m
Deal found 9/16![British Airways logo]()
$1,863
This British Airways deal was found by Cheapflights users on 9/19. 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 12/2212:41 pm -
2 stops21h 14m
Tue 12/297:10 pm -
2 stops31h 40m
Deal found 9/19![British Airways logo]()
$1,881
This BusinessClass 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:05 pm -
1 stop24h 40m
Sun 10/115:30 pm -
1 stop35h 44m
Deal found 9/15![Multiple Airlines logo]()
$1,732
Last-minute flights from Ontario to PortugalDiscover last-minute flight deals from Ontario to Portugal. Data last updated September 20, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Portugal. Data last updated September 20, 2026 and is based on user searches.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:54 am -
2 stops19h 36m
Thu 10/85:00 am -
2 stops20h 12m
Deal found 9/17![Delta logo]()
$704
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:54 am -
2 stops22h 16m
Thu 10/85:55 am -
2 stops23h 59m
Deal found 9/17![KLM logo]()
$705
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:45 am -
2 stops21h 40m
Tue 10/205:00 am -
2 stops20h 12m
Deal found 9/16![Multiple Airlines logo]()
$663
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.
Thu 10/2211:15 pm -
2 stops50h 45m
Mon 11/211:30 am -
2 stops36h 53m
Deal found 9/16![Delta logo]()
$802
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.
Fri 10/2311:15 pm -
2 stops49h 45m
Mon 11/212:25 pm -
2 stops35h 58m
Deal found 9/16![Delta logo]()
$655
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.
Fri 10/3012:16 pm -
2 stops37h 44m
Mon 11/911:30 am -
2 stops44h 19m
Deal found 9/16![Delta logo]()
$694
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.
Fri 10/301:35 pm -
2 stops36h 25m
Sun 11/85:30 am -
2 stops18h 53m
Deal found 9/16![Delta logo]()
$744
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:59 am -
2 stops19h 31m
Fri 11/612:35 pm -
2 stops38h 12m
Deal found 9/15![United Airlines logo]()
$821
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.
Sat 10/316:00 am -
2 stops20h 00m
Mon 11/911:30 am -
2 stops44h 19m
Deal found 9/16![Delta logo]()
$681
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.
Sat 10/317:07 am -
2 stops18h 53m
Sun 11/85:30 am -
2 stops18h 53m
Deal found 9/16![Delta logo]()
$731
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 10/315:00 am -
3 stops46h 05m
Mon 11/910:15 am -
2 stops40h 32m
Deal found 9/16![United Airlines logo]()
$844
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:00 am -
2 stops44h 30m
Sat 11/712:30 pm -
2 stops37h 26m
Deal found 9/15![United Airlines logo]()
$845
One-way flights from Ontario to PortugalSearch for one-way flight options from Ontario to Portugal. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.
Search for one-way flight options from Ontario to Portugal. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/155:00 am -
2 stops21h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![United Airlines logo]()
$346
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1511:59 pm -
2 stops24h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![American Airlines logo]()
$355
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.
Tue 12/296:27 pm -
2 stops31h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$363
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/96:53 pm -
3 stops36h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![United Airlines logo]()
$366
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/62:17 pm -
2 stops19h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![British Airways logo]()
$383
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.
Mon 3/16:30 am -
2 stops17h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$384
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/285:00 am -
2 stops20h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Air Canada logo]()
$393
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.
Thu 12/315:55 am -
2 stops19h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$396
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:25 am -
2 stops23h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$428
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/56:00 am -
2 stops18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![United Airlines logo]()
$434
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.
Wed 1/66:53 pm -
3 stops30h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$443
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/126:53 pm -
2 stops29h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$449
Find flight deals from Ontario to Portugal
Keep the following information in mind while searching for Ontario to Portugal flight deals. Data was last updated September 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $620 (Delta) |
One-way from | $346 (United Airlines) |
Popular in | July |
Cheapest in | January |
Average price | $965 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario 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 20, 2026.
Use the filters below to find and compare flights from Ontario to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioPorto
ONT Ontario - OPO Porto
ONTOPO
Ontario
Sun 2/28
5:00 am-9:30 am
2 stops20h 30m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$346
OntarioPorto
ONT Ontario - OPO Porto
ONTOPO
Ontario
Mon 3/15
5:00 am-9:30 am
2 stops21h 30m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$346
OntarioPorto
ONT Ontario - OPO Porto
ONTOPO
Ontario
Sat 1/9
4:03 pm-3:20 pm
2 stops39h 17m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$377
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Wed 1/13
7:00 am-8:00 am
2 stops17h 00m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Mon 3/1
6:30 am-8:10 am
2 stops17h 40m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Tue 1/12
5:00 am-8:10 am
2 stops19h 10m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Mon 1/11
7:00 am-8:10 am
2 stops17h 10m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Thu 2/4
6:00 am-8:10 am
2 stops18h 10m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$434
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Fri 2/5
6:00 am-8:10 am
2 stops18h 10m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$434
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Fri 2/12
6:53 pm-8:40 am
2 stops29h 47m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$449
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Ontario with our price prediction graph.
ONT-OPO
ONT-LIS
ONT-FAO
ONT-PDL
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 Ontario to Portugal
ONT-PT0
ONT-OPO
ONT-LIS
ONT-FAO
ONT-PDL
No data available for this route at this time. Please check back soon.
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 20, 2026.
See what other customers who have flown with United Airlines from Ontario to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Entertainment
7.1
Crew
8.1
Boarding
7.7
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.7
Entertainment
7.1
Crew
8.1
Boarding
7.7
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario 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 Ontario 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 Ontario to Portugal by cabin class
Find flights from Ontario to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Portugal flights
Browse other Ontario and Portugal flight options. Last updated on September 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Portugal flights
Consider these flights traveling from Ontario to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top airline flying from Ontario to Portugal
Discover the top airline that operate flights from Ontario 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 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$515 | Average$1,177 | FlexibilityNo cancel fee | On-time69% |