$379+ Cheap flights from Ontario (ONT) 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Sep 12 — Sep 191
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
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
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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 August 13, 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 August 13, 2026.
This United Airlines deal was found by Cheapflights users on 8/12. 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 12/66:00 am -
2 stops19h 30m
Thu 12/1012:35 pm -
2 stops18h 31m
Deal found 8/12![United Airlines logo]()
$746
This United Airlines deal was found by Cheapflights users on 8/11. 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 12/95:00 am -
2 stops17h 55m
Wed 1/135:00 am -
2 stops20h 47m
Deal found 8/11![United Airlines logo]()
$758
This Delta deal was found by Cheapflights users on 8/11. 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 11/177:00 am -
2 stops17h 00m
Tue 12/15:30 am -
2 stops25h 30m
Deal found 8/11![Delta logo]()
$798
This United Airlines deal was found by Cheapflights users on 8/10. 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 12/295:45 am -
2 stops18h 25m
Thu 1/710:15 am -
2 stops18h 05m
Deal found 8/10![United Airlines logo]()
$801
This Air Canada deal was found by Cheapflights users on 8/8. 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.
Thu 11/269:25 am -
2 stops15h 55m
Thu 12/108:55 am -
2 stops17h 49m
Deal found 8/8![Multiple Airlines logo]()
$819
This Delta deal was found by Cheapflights users on 8/12. 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 9/3011:54 am -
2 stops21h 56m
Tue 10/65:00 am -
2 stops25h 43m
Deal found 8/12![Delta logo]()
$820
This United Airlines deal was found by Cheapflights users on 8/11. 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 11/156:00 am -
2 stops18h 10m
Sun 12/612:20 pm -
2 stops18h 46m
Deal found 8/11![United Airlines logo]()
$821
This Iberia deal was found by Cheapflights users on 8/9. 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 11/227:00 am -
2 stops16h 40m
Fri 12/48:40 pm -
2 stops21h 00m
Deal found 8/9![Iberia logo]()
$834
This United Airlines deal was found by Cheapflights users on 8/9. 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
Sun 11/2210:15 am -
2 stops18h 36m
Deal found 8/9![United Airlines logo]()
$851
This Iberia deal was found by Cheapflights users on 8/12. 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.
Thu 11/127:00 am -
2 stops16h 40m
Sat 11/218:40 pm -
2 stops21h 11m
Deal found 8/12![Iberia logo]()
$854
This United Airlines deal was found by Cheapflights users on 8/8. 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 11/46:00 am -
2 stops19h 30m
Sat 11/146:00 am -
2 stops22h 51m
Deal found 8/8![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 8/9. 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 10/236:00 am -
2 stops18h 20m
Sat 11/710:15 am -
2 stops19h 25m
Deal found 8/9![United Airlines logo]()
$871
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 August 13, 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 August 13, 2026.
This United Airlines deal was found by Cheapflights users on 8/8. 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 12/66:00 am -
2 stops19h 30m
Thu 12/1012:35 pm -
2 stops18h 31m
Deal found 8/8![United Airlines logo]()
$746
This KLM deal was found by Cheapflights users on 8/12. 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 2/27:00 am -
2 stops17h 00m
Wed 2/1011:15 am -
2 stops19h 28m
Deal found 8/12![Multiple Airlines logo]()
$759
This Iberia deal was found by Cheapflights users on 8/9. 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 11/227:00 am -
2 stops16h 40m
Fri 12/48:40 pm -
2 stops21h 00m
Deal found 8/9![Iberia logo]()
$834
This Delta deal was found by Cheapflights users on 8/8. 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 9/1411:54 am -
2 stops21h 56m
Sun 9/205:35 am -
2 stops24h 49m
Deal found 8/8![Delta logo]()
$1,052
This British Airways deal was found by Cheapflights users on 8/9. 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 11/2212:42 pm -
2 stops20h 53m
Fri 12/47:10 pm -
2 stops31h 37m
Deal found 8/9![British Airways logo]()
$1,079
This Turkish Airlines deal was found by Cheapflights users on 8/8. 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.
Sat 9/1910:39 pm -
2 stops33h 11m
Mon 10/510:40 am -
2 stops42h 20m
Deal found 8/8![Turkish Airlines logo]()
$1,259
This United Airlines deal was found by Cheapflights users on 8/9. 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 12/16:45 am -
2 stops18h 45m
Wed 12/912:35 pm -
2 stops18h 31m
Deal found 8/9![United Airlines logo]()
$746
This United Airlines deal was found by Cheapflights users on 8/11. 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 11/156:00 am -
2 stops18h 10m
Sun 12/612:20 pm -
2 stops18h 46m
Deal found 8/11![United Airlines logo]()
$821
This United Airlines deal was found by Cheapflights users on 8/8. 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 1/176:45 am -
2 stops17h 25m
Thu 1/2111:20 am -
2 stops39h 24m
Deal found 8/8![United Airlines logo]()
$822
This British Airways deal was found by Cheapflights users on 8/12. 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 1/172:22 pm -
2 stops19h 23m
Fri 1/227:05 am -
2 stops22h 56m
Deal found 8/12![British Airways logo]()
$1,080
This United Airlines deal was found by Cheapflights users on 8/12. 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 1/115:00 am -
2 stops19h 10m
Thu 1/1410:15 am -
2 stops18h 05m
Deal found 8/12![United Airlines logo]()
$842
This United Airlines deal was found by Cheapflights users on 8/11. 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 12/116:00 am -
2 stops18h 10m
Wed 12/1611:55 am -
2 stops19h 11m
Deal found 8/11![United Airlines logo]()
$851
This Mytrip deal was found by Cheapflights users on 8/12. 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 8/295:00 am -
2 stops20h 20m
Sun 9/69:35 am -
2 stops39h 36m
Deal found 8/12![Air Canada logo]()
$2,610
This KAYAK deal was found by Cheapflights users on 8/8. 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 9/111:59 pm -
1 stop23h 46m
Mon 9/145:30 pm -
1 stop34h 27m
Deal found 8/8![Multiple Airlines logo]()
$1,324
This United Airlines deal was found by Cheapflights users on 8/9. 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
Sun 11/2210:15 am -
2 stops18h 36m
Deal found 8/9![United Airlines logo]()
$851
This United Airlines deal was found by Cheapflights users on 8/8. 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 11/46:00 am -
2 stops19h 30m
Sat 11/146:00 am -
2 stops22h 51m
Deal found 8/8![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 8/11. 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
Mon 2/155:00 am -
2 stops20h 47m
Deal found 8/11![United Airlines logo]()
$859
This Booking.com deal was found by Cheapflights users on 8/10. 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 9/198:25 am -
2 stops18h 35m
Mon 10/511:10 am -
2 stops19h 43m
Deal found 8/10![British Airways logo]()
$1,664
This United Airlines deal was found by Cheapflights users on 8/13. 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 10/156:00 am -
2 stops19h 45m
Fri 10/236:00 am -
2 stops22h 58m
Deal found 8/13![United Airlines logo]()
$887
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/216:00 am -
2 stops19h 45m
Tue 9/296:00 am -
2 stops22h 31m
Deal found 8/11![United Airlines logo]()
$979
This Air France deal was found by Cheapflights users on 8/10. 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.
Fri 8/287:05 am -
2 stops20h 35m
Sun 9/69:20 am -
2 stops21h 25m
Deal found 8/10![Multiple Airlines logo]()
$2,221
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/127:00 am -
2 stops41h 20m
Fri 9/2511:25 am -
2 stops54h 58m
Deal found 8/8![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 8/8. 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 11/16:37 pm -
2 stops36h 43m
Sun 11/1512:35 pm -
2 stops40h 16m
Deal found 8/8![United Airlines logo]()
$993
This flugladen.de deal was found by Cheapflights users on 8/10. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:39 pm -
2 stops34h 01m
Mon 10/129:50 pm -
2 stops55h 19m
Deal found 8/10![Multiple Airlines logo]()
$2,445
This Iberia deal was found by Cheapflights users on 8/10. 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 9/152:22 pm -
2 stops20h 48m
Sun 9/209:45 am -
2 stops21h 51m
Deal found 8/10![Multiple Airlines logo]()
$2,569
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/157:00 am -
2 stops22h 50m
Sun 9/203:25 pm -
2 stops39h 34m
Deal found 8/12![United Airlines logo]()
$1,190
This United Airlines deal was found by Cheapflights users on 8/9. 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 10/186:00 am -
2 stops19h 45m
Sun 10/256:00 am -
2 stops21h 15m
Deal found 8/9![United Airlines logo]()
$1,262
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/266:00 am -
2 stops43h 45m
Sat 10/36:00 am -
2 stops48h 49m
Deal found 8/12![United Airlines logo]()
$1,311
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/157:00 am -
2 stops22h 50m
Tue 9/2211:40 am -
2 stops19h 19m
Deal found 8/12![United Airlines logo]()
$1,394
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/15:00 am -
3 stops20h 20m
Mon 9/1411:00 am -
2 stops18h 59m
Deal found 8/12![United Airlines logo]()
$1,431
Last-minute flights from Ontario to PortugalDiscover last-minute flight deals from Ontario to Portugal. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Portugal. Data last updated August 13, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Sun 8/167:13 pm -
2 stops27h 47m
Thu 9/1011:50 am -
2 stops38h 21m
Deal found 8/12![Air Canada logo]()
$966
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Sun 8/167:13 pm -
2 stops27h 47m
Sat 9/1212:20 pm -
2 stops37h 51m
Deal found 8/12![Air Canada logo]()
$1,026
This United Airlines deal was found by Cheapflights users on 8/12. 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 8/197:00 am -
2 stops15h 55m
Wed 9/98:55 am -
2 stops22h 04m
Deal found 8/12![United Airlines logo]()
$987
This United Airlines deal was found by Cheapflights users on 8/12. 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 8/197:00 am -
2 stops15h 55m
Tue 9/812:35 pm -
2 stops42h 24m
Deal found 8/12![United Airlines logo]()
$1,001
This United Airlines deal was found by Cheapflights users on 8/12. 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 8/216:08 am -
2 stops16h 42m
Wed 9/98:55 am -
2 stops19h 06m
Deal found 8/12![United Airlines logo]()
$1,047
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/97:00 am -
2 stops15h 55m
Wed 9/236:00 am -
2 stops22h 01m
Deal found 8/10![United Airlines logo]()
$924
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/105:00 am -
2 stops20h 45m
Wed 9/1611:20 am -
2 stops41h 33m
Deal found 8/10![United Airlines logo]()
$982
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/127:00 am -
2 stops41h 20m
Fri 9/2511:25 am -
2 stops54h 58m
Deal found 8/8![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/156:00 am -
2 stops16h 15m
Tue 9/296:00 am -
2 stops22h 31m
Deal found 8/12![United Airlines logo]()
$980
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/216:00 am -
2 stops19h 45m
Tue 9/296:00 am -
2 stops22h 31m
Deal found 8/11![United Airlines logo]()
$979
This Delta deal was found by Cheapflights users on 8/12. 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 9/276:00 am -
2 stops24h 55m
Sun 10/45:35 am -
2 stops26h 12m
Deal found 8/12![Delta logo]()
$942
This Delta deal was found by Cheapflights users on 8/12. 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 9/3011:54 am -
2 stops21h 56m
Tue 10/65:00 am -
2 stops25h 43m
Deal found 8/12![Delta logo]()
$820
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 August 13, 2026.
Search for one-way flight options from Ontario to Portugal. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
This United Airlines deal was found by Cheapflights users on 8/10. 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 11/187:00 am -
2 stops20h 40m
Deal found 8/10![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/11. 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
Deal found 8/11![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 8/11. 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 11/141:29 pm -
2 stops35h 51m
Deal found 8/11![United Airlines logo]()
$393
This CheapOair deal was found by Cheapflights users on 8/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:22 pm -
2 stops19h 23m
Deal found 8/11![British Airways logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 10/282:35 pm -
3 stops59h 05m
Deal found 8/12![Multiple Airlines logo]()
$425
This United deal was found by Cheapflights users on 8/11. 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.
Thu 11/197:00 am -
2 stops21h 45m
Deal found 8/11![Multiple Airlines logo]()
$442
This Air Canada deal was found by Cheapflights users on 8/10. 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.
Sat 11/285:00 am -
2 stops19h 55m
Deal found 8/10![Air Canada logo]()
$443
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/206:00 am -
2 stops19h 55m
Deal found 8/8![United Airlines logo]()
$444
This CheapOair deal was found by Cheapflights users on 8/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/262:22 pm -
2 stops19h 33m
Deal found 8/13![British Airways logo]()
$446
This United Airlines deal was found by Cheapflights users on 8/13. 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 12/241:42 pm -
2 stops35h 38m
Deal found 8/13![United Airlines logo]()
$450
This Trip.com deal was found by Cheapflights users on 8/9. 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.
Thu 10/2212:18 pm -
2 stops26h 32m
Deal found 8/9![Multiple Airlines logo]()
$459
This Gotogate deal was found by Cheapflights users on 8/12. 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.
Wed 10/285:00 am -
2 stops18h 55m
Deal found 8/12![Air Canada logo]()
$462
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 August 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $746 (United Airlines) |
One-way from | $379 (United Airlines) |
Popular in | July |
Cheapest in | January |
Average price | $1,074 |
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 2,558,603 searches. Data last updated August 13, 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 12/6
6:00 am-9:30 am
2 stops19h 30m
Porto
Thu 12/10
12:35 pm-11:06 pm
2 stops18h 31m
$746
OntarioPorto
ONT Ontario - OPO Porto
ONTOPO
Ontario
Tue 12/1
6:45 am-9:30 am
2 stops18h 45m
Porto
Wed 12/9
12:35 pm-11:06 pm
2 stops18h 31m
$746
Quickest round-trip
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Tue 2/2
7:00 am-8:00 am
2 stops17h 00m
Lisbon Humberto Delgado
Wed 2/10
11:15 am-10:43 pm
2 stops19h 28m
$759
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Sun 11/15
6:00 am-8:10 am
2 stops18h 10m
Lisbon Humberto Delgado
Sun 12/6
12:20 pm-11:06 pm
2 stops18h 46m
$821
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Sun 1/17
6:45 am-8:10 am
2 stops17h 25m
Lisbon Humberto Delgado
Thu 1/21
11:20 am-6:44 pm
2 stops39h 24m
$822
OntarioPorto
ONT Ontario - OPO Porto
ONTOPO
Ontario
Sun 11/22
7:00 am-7:40 am
2 stops16h 40m
Porto
Fri 12/4
8:40 pm-9:40 am
2 stops21h 00m
$834
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Mon 1/11
5:00 am-8:10 am
2 stops19h 10m
Lisbon Humberto Delgado
Thu 1/14
10:15 am-8:20 pm
2 stops18h 05m
$842
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Fri 12/11
6:00 am-8:10 am
2 stops18h 10m
Lisbon Humberto Delgado
Wed 12/16
11:55 am-11:06 pm
2 stops19h 11m
$851
OntarioLisbon
ONT Ontario - LIS Lisbon Humberto Delgado
ONTLIS
Ontario
Wed 11/18
6:00 am-8:10 am
2 stops18h 10m
Lisbon Humberto Delgado
Sun 11/22
10:15 am-8:51 pm
2 stops18h 36m
$851
OntarioPorto
ONT Ontario - OPO Porto
ONTOPO
Ontario
Wed 11/4
6:00 am-9:30 am
2 stops19h 30m
Porto
Sat 11/14
6:00 am-8:51 pm
2 stops22h 51m
$856
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 August 13, 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.
Comfort
7.3
Food
6.7
Boarding
7.7
Crew
8.1
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Food
6.7
Boarding
7.7
Crew
8.1
Entertainment
7.1
Overall
7.4
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 August 13, 2026.
Popular flight searches
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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 2,558,603 searches. Data last updated August 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$515 | Average$1,177 | FlexibilityNo cancel fee | On-time69% |