$381+ Cheap flights from Ontario (ONT) to Vietnam
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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Nov 22 — Nov 291
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Vietnam 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 VietnamExplore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.
Explore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.
This Delta deal was found by Cheapflights users on 10/19. 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.
Thu 11/56:00 am -
2 stops24h 40m
Sat 11/1411:00 pm -
2 stops33h 16m
Deal found 10/19![Delta logo]()
$701
This lastminute.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:20 am -
2 stops27h 30m
Fri 11/62:05 pm -
2 stops42h 07m
Deal found 10/21![Korean Air logo]()
$742
This Traveloka deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:20 am -
2 stops26h 05m
Mon 11/167:55 am -
2 stops24h 21m
Deal found 10/21![Korean Air logo]()
$747
This Delta deal was found by Cheapflights users on 10/19. 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.
Thu 10/226:00 pm -
2 stops38h 10m
Tue 3/301:55 pm -
2 stops41h 22m
Deal found 10/19![Delta logo]()
$751
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
2 stops23h 40m
Thu 12/311:00 pm -
2 stops33h 15m
Deal found 10/19![Delta logo]()
$751
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:00 pm -
2 stops39h 15m
Tue 11/2411:40 pm -
2 stops38h 20m
Deal found 10/20![Delta logo]()
$752
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 pm -
2 stops39h 50m
Fri 10/307:55 am -
2 stops28h 48m
Deal found 10/20![Delta logo]()
$757
This Delta deal was found by Cheapflights users on 10/18. 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.
Fri 10/236:20 am -
2 stops25h 50m
Sat 11/77:55 am -
2 stops23h 28m
Deal found 10/18![Delta logo]()
$787
This Kissandfly.com deal was found by Cheapflights users on 10/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:20 am -
2 stops25h 20m
Sun 11/811:00 pm -
2 stops33h 16m
Deal found 10/18![Korean Air logo]()
$787
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 10/246:00 am -
2 stops27h 50m
Wed 10/282:05 pm -
2 stops46h 38m
Deal found 10/22![Delta logo]()
$788
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:00 am -
2 stops24h 40m
Thu 12/311:00 pm -
2 stops33h 15m
Deal found 10/21![Delta logo]()
$788
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops24h 25m
Wed 12/92:05 pm -
2 stops47h 54m
Deal found 10/21![Korean Air logo]()
$793
Best flights from Ontario to VietnamDiscover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
Discover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:56 pm -
2 stops51h 54m
Mon 12/72:05 pm -
2 stops48h 52m
Deal found 10/21![Delta logo]()
$793
This Korean Air deal was found by Cheapflights users on 10/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/167:00 am -
2 stops24h 40m
Tue 3/3010:55 pm -
2 stops37h 48m
Deal found 10/20![Korean Air logo]()
$793
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/276:00 am -
2 stops27h 15m
Fri 12/47:30 am -
2 stops23h 05m
Deal found 10/19![United Airlines logo]()
$947
This Korean Air deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:00 am -
2 stops25h 50m
Thu 11/267:55 am -
2 stops25h 35m
Deal found 10/22![Multiple Airlines logo]()
$948
This Booking.com deal was found by Cheapflights users on 10/17. 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 2/199:45 pm -
1 stop28h 30m
Sun 3/216:25 pm -
1 stop36h 30m
Deal found 10/17![STARLUX Airlines logo]()
$1,003
This China Airlines deal was found by Cheapflights users on 10/19. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2812:10 am -
1 stop26h 40m
Fri 4/2311:30 am -
1 stop20h 30m
Deal found 10/19![China Airlines logo]()
$1,082
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:09 pm -
2 stops52h 01m
Thu 11/1912:20 pm -
2 stops20h 57m
Deal found 10/17![Alaska Airlines logo]()
$1,239
This Korean Air deal was found by Cheapflights users on 10/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am -
2 stops23h 40m
Tue 12/111:00 pm -
2 stops33h 15m
Deal found 10/19![Korean Air logo]()
$793
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 2/13:30 pm -
2 stops30h 20m
Wed 2/242:05 pm -
2 stops38h 52m
Deal found 10/22![Delta logo]()
$838
This Korean Air deal was found by Cheapflights users on 10/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/307:00 am -
2 stops23h 40m
Tue 2/2311:00 pm -
2 stops29h 57m
Deal found 10/20![Korean Air logo]()
$793
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/313:30 pm -
2 stops30h 20m
Wed 2/242:05 pm -
2 stops38h 52m
Deal found 10/22![Delta logo]()
$838
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Tue 11/245:00 am -
2 stops28h 15m
Mon 12/147:30 am -
2 stops23h 05m
Deal found 10/19![United Airlines logo]()
$947
This Korean Air deal was found by Cheapflights users on 10/18. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/87:00 am -
2 stops23h 40m
Fri 1/2911:00 pm -
2 stops29h 57m
Deal found 10/18![Korean Air logo]()
$793
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/37:00 am -
2 stops24h 25m
Thu 3/187:55 am -
2 stops23h 22m
Deal found 10/20![Delta logo]()
$858
This STARLUX Airlines deal was found by Cheapflights users on 10/17. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:45 pm -
1 stop28h 30m
Thu 11/56:25 pm -
1 stop36h 30m
Deal found 10/17![STARLUX Airlines logo]()
$1,043
This United Airlines deal was found by Cheapflights users on 10/19. 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 3/106:00 am -
2 stops26h 10m
Wed 4/147:00 am -
2 stops24h 47m
Deal found 10/19![United Airlines logo]()
$952
This Korean Air deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:56 pm -
2 stops29h 19m
Thu 12/311:00 pm -
2 stops33h 15m
Deal found 10/22![Korean Air logo]()
$793
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 am -
2 stops26h 10m
Fri 11/137:30 am -
2 stops19h 59m
Deal found 10/21![United Airlines logo]()
$952
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/23:30 pm -
2 stops31h 45m
Thu 5/63:55 pm -
2 stops39h 22m
Deal found 10/21![Korean Air logo]()
$793
This Delta deal was found by Cheapflights users on 10/18. 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 11/226:00 am -
2 stops25h 25m
Thu 12/311:45 pm -
2 stops38h 14m
Deal found 10/18![Delta logo]()
$885
This China Airlines deal was found by Cheapflights users on 10/19. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2411:50 pm -
2 stops31h 20m
Fri 4/2311:30 am -
1 stop20h 30m
Deal found 10/19![China Airlines logo]()
$1,222
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/179:25 am -
2 stops22h 45m
Tue 12/157:30 am -
2 stops23h 05m
Deal found 10/18![United Airlines logo]()
$952
This Korean Air deal was found by Cheapflights users on 10/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 pm -
2 stops36h 40m
Thu 11/511:00 pm -
2 stops38h 43m
Deal found 10/20![Korean Air logo]()
$793
This Alaska Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:00 am -
2 stops38h 10m
Tue 12/111:55 pm -
2 stops31h 10m
Deal found 10/21![Alaska Airlines logo]()
$1,282
This China Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:50 pm -
1 stop26h 40m
Thu 11/126:00 am -
2 stops26h 05m
Deal found 10/21![China Airlines logo]()
$1,262
This Korean Air deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
2 stops23h 40m
Wed 12/211:00 pm -
2 stops33h 15m
Deal found 10/22![Korean Air logo]()
$793
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/1211:57 am -
2 stops32h 13m
Thu 12/1012:20 pm -
2 stops25h 39m
Deal found 10/22![Delta logo]()
$993
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:00 am -
2 stops23h 45m
Thu 12/312:20 pm -
2 stops25h 39m
Deal found 10/21![Korean Air logo]()
$798
This China Airlines deal was found by Cheapflights users on 10/18. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2011:50 pm -
2 stops24h 20m
Sat 4/311:30 am -
1 stop20h 30m
Deal found 10/18![China Airlines logo]()
$1,307
This STARLUX Airlines deal was found by Cheapflights users on 10/18. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:45 pm -
1 stop28h 55m
Mon 11/306:40 pm -
1 stop36h 15m
Deal found 10/18![STARLUX Airlines logo]()
$1,441
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated October 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated October 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/19. 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.
Thu 10/226:00 pm -
2 stops38h 10m
Tue 3/301:55 pm -
2 stops41h 22m
Deal found 10/19![Delta logo]()
$751
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 pm -
2 stops39h 50m
Fri 10/307:55 am -
2 stops28h 48m
Deal found 10/20![Delta logo]()
$757
This Delta deal was found by Cheapflights users on 10/18. 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.
Fri 10/236:20 am -
2 stops25h 50m
Sat 11/77:55 am -
2 stops23h 28m
Deal found 10/18![Delta logo]()
$787
This lastminute.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:20 am -
2 stops27h 30m
Fri 11/62:05 pm -
2 stops42h 07m
Deal found 10/21![Korean Air logo]()
$742
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 10/246:00 am -
2 stops27h 50m
Wed 11/47:55 am -
2 stops29h 16m
Deal found 10/22![Delta logo]()
$788
This Kissandfly.com deal was found by Cheapflights users on 10/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:20 am -
2 stops25h 20m
Sun 11/811:00 pm -
2 stops33h 16m
Deal found 10/18![Korean Air logo]()
$787
This Traveloka deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:20 am -
2 stops26h 05m
Mon 11/167:55 am -
2 stops24h 21m
Deal found 10/21![Korean Air logo]()
$747
This Delta deal was found by Cheapflights users on 10/19. 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.
Thu 11/56:00 am -
2 stops24h 40m
Mon 11/1611:00 pm -
2 stops32h 24m
Deal found 10/19![Delta logo]()
$701
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
2 stops23h 40m
Thu 12/311:00 pm -
2 stops33h 15m
Deal found 10/19![Delta logo]()
$751
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
2 stops23h 40m
Wed 12/211:00 pm -
2 stops33h 15m
Deal found 10/21![Korean Air logo]()
$793
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:00 am -
2 stops24h 40m
Thu 12/311:00 pm -
2 stops33h 15m
Deal found 10/21![Delta logo]()
$788
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops24h 25m
Wed 12/92:05 pm -
2 stops47h 54m
Deal found 10/21![Korean Air logo]()
$793
One-way flights from Ontario to VietnamSearch for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/27:00 am -
2 stops25h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$381
This Kissandfly.com deal was found by Cheapflights users on 10/17. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/257:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Korean Air logo]()
$389
This Kissandfly.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/173:30 pm -
2 stops30h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Korean Air logo]()
$392
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/177:00 am -
2 stops38h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/147:00 am -
2 stops40h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/237:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Delta logo]()
$400
This Korean Air deal was found by Cheapflights users on 10/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/27:00 am -
2 stops24h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Korean Air logo]()
$402
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/173:30 pm -
2 stops31h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Korean Air logo]()
$402
This Delta deal was found by Cheapflights users on 10/17. 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 2/227:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Delta logo]()
$404
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/223:30 pm -
2 stops39h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Korean Air logo]()
$407
This Korean Air deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am -
2 stops37h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Korean Air logo]()
$413
This Delta deal was found by Cheapflights users on 10/19. 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 4/126:00 am -
2 stops26h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Delta logo]()
$414
Find flight deals from Ontario to Vietnam
Keep the following information in mind while searching for Ontario to Vietnam flight deals. Data was last updated October 23, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $701 (Delta) |
One-way from | $381 (Delta) |
Popular in | December |
Cheapest in | March |
Average price | $783 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Vietnam 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 October 23, 2026.
Use the filters below to find and compare flights from Ontario to Vietnam that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Tue 2/2
7:00 am-11:50 pm
2 stops25h 50m
Ho Chi Minh City
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$381
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Wed 2/17
7:00 am-12:50 pm
2 stops38h 50m
Ho Chi Minh City
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$399
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Mon 2/22
6:00 am-9:40 pm
2 stops24h 40m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$399
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Mon 2/22
7:00 am-9:45 pm
2 stops23h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$404
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Mon 11/30
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$413
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Wed 11/25
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$413
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Sat 11/28
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$438
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Thu 2/4
7:00 am-11:50 pm
2 stops25h 50m
Ho Chi Minh City
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$440
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Thu 10/29
6:20 am-9:40 pm
2 stops25h 20m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$445
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Fri 11/13
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$452
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Vietnam
Have a flexible travel schedule? Discover the best time to fly to Vietnam from Ontario with our price prediction graph.
ONT-DAD
ONT-SGN
ONT-HAN
ONT-CXR
ONT-PQC
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 Vietnam
ONT-VN0
ONT-DAD
ONT-SGN
ONT-HAN
ONT-CXR
What is the cheapest month to book a flight from Ontario to Vietnam?
Currently, March is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $753). Flying from Ontario to Vietnam in December is currently the most expensive (average of $1,552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Ontario to Vietnam?
The best time to book flights from Ontario to Vietnam is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Vietnam
Get insights into the airlines that provide service to Vietnam. 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 Vietnam. Reviews last updated October 23, 2026.
See what other customers who have flown with STARLUX Airlines,Korean Air, andChina Airlines from Ontario to Vietnam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.8
Boarding
8.8
Entertainment
8.7
Overall
8.7
Food
8.6
Crew
9.1
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Comfort
8.8
Boarding
8.8
Entertainment
8.7
Overall
8.7
Food
8.6
Crew
9.1
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Comfort
8.8
Boarding
8.8
Entertainment
8.7
Overall
8.7
Food
8.6
Crew
9.1
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Comfort
8.8
Boarding
8.8
Entertainment
8.7
Overall
8.7
Food
8.6
Crew
9.1
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Comfort
8.8
Boarding
8.8
Entertainment
8.7
Overall
8.7
Food
8.6
Crew
9.1
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Comfort
8.8
Boarding
8.8
Entertainment
8.7
Overall
8.7
Food
8.6
Crew
9.1
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Related info for your journey
Find useful and relevant information for your journey from Ontario to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to Vietnam
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Vietnam by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Vietnam by cabin class
Find flights from Ontario to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Vietnam flights
Browse other Ontario and Vietnam flight options. Last updated on October 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Vietnam flights
Consider these flights traveling from Ontario to Vietnam.
Fly to Vietnam regions
Consider these flights traveling to Vietnam regions.
Top 5 airlines flying from Ontario to Vietnam
Discover the top 5 airlines that operate flights from Ontario to Vietnam. 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 October 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$611 | Average$891 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$656 | Average$765 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$689 | Average$889 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$743 | Average$948 | FlexibilityNo cancel fee | On-timeN/A |