$395+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Nov 12 — Nov 191
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
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Vietnam
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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 13, 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 13, 2026.
This Kissandfly.com deal was found by Cheapflights users on 10/8. 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 Kissandfly.com 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 12/97:55 am -
2 stops24h 20m
Deal found 10/8![Korean Air logo]()
$766
This Kissandfly.com deal was found by Cheapflights users on 10/12. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops24h 25m
Mon 12/77:55 am -
2 stops24h 20m
Deal found 10/12![Korean Air logo]()
$773
This IEagle deal was found by Cheapflights users on 10/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 pm -
2 stops27h 50m
Thu 11/127:55 am -
2 stops24h 21m
Deal found 10/8![Korean Air logo]()
$782
This Korean Air deal was found by Cheapflights users on 10/9. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:20 am -
2 stops25h 50m
Fri 10/307:55 am -
2 stops28h 48m
Deal found 10/9![Korean Air logo]()
$783
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops24h 20m
Thu 11/53:45 pm -
2 stops45h 58m
Deal found 10/8![Korean Air logo]()
$783
This Delta deal was found by Cheapflights users on 10/12. 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.
Thu 11/266:00 am -
2 stops24h 40m
Thu 12/311:00 pm -
2 stops38h 59m
Deal found 10/12![Delta logo]()
$788
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:00 pm -
2 stops36h 40m
Mon 2/111:00 pm -
2 stops29h 57m
Deal found 10/8![Korean Air logo]()
$789
This IEagle deal was found by Cheapflights users on 10/12. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:00 am -
2 stops38h 50m
Fri 12/42:05 pm -
2 stops42h 10m
Deal found 10/12![Korean Air logo]()
$792
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:20 am -
2 stops25h 50m
Wed 10/2111:35 pm -
2 stops31h 37m
Deal found 10/12![Korean Air logo]()
$793
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 pm -
2 stops26h 10m
Thu 11/1212:20 pm -
2 stops25h 40m
Deal found 10/8![Korean Air logo]()
$798
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 pm -
2 stops26h 10m
Mon 2/812:20 pm -
2 stops40h 37m
Deal found 10/12![Korean Air logo]()
$803
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 pm -
2 stops26h 10m
Mon 1/1811:05 pm -
2 stops29h 52m
Deal found 10/8![Korean Air logo]()
$804
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 13, 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 13, 2026.
This Korean Air deal was found by Cheapflights users on 10/9. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/177:00 am -
2 stops23h 40m
Wed 3/33:45 pm -
2 stops37h 12m
Deal found 10/9![Korean Air logo]()
$783
This Delta deal was found by Cheapflights users on 10/8. 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.
Sun 2/217:00 am -
2 stops40h 15m
Sun 3/73:45 pm -
2 stops45h 58m
Deal found 10/8![Delta logo]()
$828
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/157:00 am -
2 stops23h 40m
Mon 3/13:45 pm -
2 stops37h 12m
Deal found 10/8![Multiple Airlines logo]()
$831
This United Airlines deal was found by Cheapflights users on 10/8. 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 10/218:03 am -
2 stops24h 02m
Thu 10/297:30 am -
2 stops22h 03m
Deal found 10/8![United Airlines logo]()
$972
This STARLUX Airlines deal was found by Cheapflights users on 10/12. 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 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 10/12![STARLUX Airlines logo]()
$1,044
This China Airlines deal was found by Cheapflights users on 10/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:50 pm -
1 stop26h 25m
Sat 12/1211:00 am -
1 stop21h 05m
Deal found 10/11![China Airlines logo]()
$1,048
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops40h 55m
Thu 11/53:45 pm -
2 stops45h 58m
Deal found 10/12![Korean Air logo]()
$793
This Korean Air deal was found by Cheapflights users on 10/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/173:30 pm -
2 stops39h 10m
Thu 3/43:45 pm -
2 stops45h 58m
Deal found 10/13![Korean Air logo]()
$793
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/257:00 am -
2 stops38h 10m
Thu 4/112:05 pm -
2 stops24h 38m
Deal found 10/12![Korean Air logo]()
$798
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Thu 10/159:25 am -
2 stops22h 40m
Thu 1/146:00 am -
2 stops18h 57m
Deal found 10/8![United Airlines logo]()
$988
This Delta deal was found by Cheapflights users on 10/11. 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.
Sun 2/75:05 pm -
2 stops38h 20m
Mon 2/1511:45 pm -
2 stops31h 27m
Deal found 10/11![Delta logo]()
$1,002
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/235:47 pm -
2 stops30h 28m
Sun 4/43:55 pm -
2 stops44h 48m
Deal found 10/8![Korean Air logo]()
$803
This China Airlines deal was found by Cheapflights users on 10/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/510:50 pm -
1 stop26h 40m
Thu 4/155:50 pm -
1 stop38h 10m
Deal found 10/11![China Airlines logo]()
$1,083
This Delta deal was found by Cheapflights users on 10/11. 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.
Wed 2/101:00 pm -
2 stops42h 25m
Mon 2/1511:45 pm -
2 stops37h 58m
Deal found 10/11![Delta logo]()
$1,007
This Korean Air deal was found by Cheapflights users on 10/10. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 pm -
2 stops37h 25m
Sun 12/62:05 pm -
2 stops47h 54m
Deal found 10/10![Korean Air logo]()
$813
This United Airlines deal was found by Cheapflights users on 10/11. 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 12/65:00 am -
2 stops28h 15m
Tue 12/226:00 am -
2 stops24h 19m
Deal found 10/11![United Airlines logo]()
$1,085
This Delta deal was found by Cheapflights users on 10/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/13:30 pm -
2 stops38h 55m
Mon 3/1511:05 pm -
2 stops32h 12m
Deal found 10/10![Delta logo]()
$1,048
This STARLUX Airlines deal was found by Cheapflights users on 10/11. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/69:45 pm -
1 stop28h 55m
Fri 2/126:40 pm -
1 stop36h 15m
Deal found 10/11![STARLUX Airlines logo]()
$1,292
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/85:47 pm -
2 stops36h 58m
Mon 3/2212:20 pm -
2 stops24h 23m
Deal found 10/8![Korean Air logo]()
$816
This Qatar Airways deal was found by Cheapflights users on 10/10. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/16:00 am -
3 stops46h 50m
Mon 3/1511:10 am -
3 stops73h 29m
Deal found 10/10![Multiple Airlines logo]()
$1,339
This China Airlines deal was found by Cheapflights users on 10/12. 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 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
Wed 3/3111:30 am -
1 stop20h 30m
Deal found 10/12![China Airlines logo]()
$1,222
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:20 am -
2 stops49h 50m
Mon 11/1611:40 pm -
2 stops38h 20m
Deal found 10/12![Korean Air logo]()
$819
This United Airlines deal was found by Cheapflights users on 10/10. 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 11/36:00 am -
2 stops26h 05m
Mon 11/912:25 am -
2 stops27h 04m
Deal found 10/10![United Airlines logo]()
$1,207
This Delta deal was found by Cheapflights users on 10/11. 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 stops23h 25m
Thu 12/311:05 pm -
2 stops39h 52m
Deal found 10/11![Delta logo]()
$1,108
This China Airlines deal was found by Cheapflights users on 10/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/210:50 pm -
1 stop26h 40m
Wed 4/1411:30 am -
1 stop20h 30m
Deal found 10/11![China Airlines logo]()
$1,228
This Delta deal was found by Cheapflights users on 10/11. 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.
Sat 11/215:04 pm -
2 stops37h 21m
Sun 12/611:05 pm -
2 stops33h 10m
Deal found 10/11![Delta logo]()
$1,114
This United Airlines deal was found by Cheapflights users on 10/11. 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 12/46:00 am -
2 stops26h 15m
Sat 12/1912:35 am -
2 stops29h 44m
Deal found 10/11![United Airlines logo]()
$1,229
This Korean Air deal was found by Cheapflights users on 10/10. 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 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 10/10![Korean Air logo]()
$853
This China Airlines deal was found by Cheapflights users on 10/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:50 pm -
1 stop20h 45m
Thu 11/126:00 am -
2 stops26h 05m
Deal found 10/9![China Airlines logo]()
$1,263
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Thu 11/266:00 am -
2 stops26h 05m
Sat 12/1212:35 am -
2 stops30h 00m
Deal found 10/8![United Airlines logo]()
$1,243
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated October 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated October 13, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:20 am -
2 stops25h 50m
Wed 10/2111:35 pm -
2 stops31h 37m
Deal found 10/12![Korean Air logo]()
$793
This Korean Air deal was found by Cheapflights users on 10/9. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:20 am -
2 stops25h 50m
Fri 10/307:55 am -
2 stops28h 48m
Deal found 10/9![Korean Air logo]()
$783
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops24h 20m
Thu 11/53:45 pm -
2 stops45h 58m
Deal found 10/8![Korean Air logo]()
$783
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:00 pm -
2 stops36h 40m
Mon 2/111:00 pm -
2 stops29h 57m
Deal found 10/8![Korean Air logo]()
$789
This IEagle deal was found by Cheapflights users on 10/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 pm -
2 stops27h 50m
Thu 11/127:55 am -
2 stops24h 21m
Deal found 10/8![Korean Air logo]()
$782
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 pm -
2 stops26h 10m
Thu 11/1212:20 pm -
2 stops25h 40m
Deal found 10/8![Korean Air logo]()
$798
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 pm -
2 stops26h 10m
Mon 2/812:20 pm -
2 stops40h 37m
Deal found 10/12![Korean Air logo]()
$803
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 pm -
2 stops26h 10m
Mon 1/1811:05 pm -
2 stops29h 52m
Deal found 10/8![Korean Air logo]()
$804
This Kissandfly.com deal was found by Cheapflights users on 10/8. 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 Kissandfly.com 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 12/97:55 am -
2 stops24h 20m
Deal found 10/8![Korean Air logo]()
$766
This Kissandfly.com deal was found by Cheapflights users on 10/12. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops24h 25m
Mon 12/77:55 am -
2 stops24h 20m
Deal found 10/12![Korean Air logo]()
$773
This Delta deal was found by Cheapflights users on 10/12. 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.
Thu 11/266:00 am -
2 stops24h 40m
Thu 12/311:00 pm -
2 stops38h 59m
Deal found 10/12![Delta logo]()
$788
This IEagle deal was found by Cheapflights users on 10/12. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:00 am -
2 stops38h 50m
Fri 12/42:05 pm -
2 stops42h 10m
Deal found 10/12![Korean Air logo]()
$792
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 13, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated October 13, 2026.
This Kissandfly.com deal was found by Cheapflights users on 10/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/37:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Korean Air logo]()
$395
This Korean Air deal was found by Cheapflights users on 10/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/35:38 pm -
2 stops39h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Korean Air logo]()
$402
This Korean Air deal was found by Cheapflights users on 10/9. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/87:00 am -
2 stops23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Korean Air logo]()
$402
This Delta deal was found by Cheapflights users on 10/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/87:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Delta logo]()
$404
This Korean Air deal was found by Cheapflights users on 10/10. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/103:30 pm -
2 stops39h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Korean Air logo]()
$407
This CheapOair deal was found by Cheapflights users on 10/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/177:00 am -
2 stops37h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Korean Air logo]()
$418
This Traveloka deal was found by Cheapflights users on 10/8. 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 Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:00 pm -
2 stops30h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Korean Air logo]()
$430
This Traveloka deal was found by Cheapflights users on 10/10. 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 Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 pm -
2 stops36h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Korean Air logo]()
$433
This Delta deal was found by Cheapflights users on 10/8. 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 11/237:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$435
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Korean Air logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:20 am -
2 stops24h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Korean Air logo]()
$439
This Delta deal was found by Cheapflights users on 10/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:20 am -
2 stops26h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Delta logo]()
$442
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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $766 (Kissandfly.com) |
One-way from | $395 (Kissandfly.com) |
Popular in | December |
Cheapest in | March |
Average price | $771 |
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 13, 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
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Sun 2/28
3:30 pm-2:15 pm
2 stops31h 45m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$402
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Mon 3/8
5:47 pm-9:40 pm
2 stops36h 53m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$402
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Tue 3/23
5:47 pm-9:40 pm
2 stops37h 53m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$402
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Thu 3/4
7:00 am-2:15 pm
2 stops40h 15m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$402
Quickest round-trip
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Thu 2/4
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
Tue 2/9
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$404
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Thu 3/4
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$407
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Tue 11/24
6:00 am-9:45 pm
2 stops24h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$435
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Sun 11/22
7:00 am-9:45 pm
2 stops23h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$438
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Fri 3/12
5:47 pm-9:45 pm
2 stops36h 58m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$438
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-HAN
ONT-SGN
ONT-DAD
ONT-PQC
ONT-CXR
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-HAN
ONT-SGN
ONT-DAD
ONT-PQC
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 $743). Flying from Ontario to Vietnam in December is currently the most expensive (average of $1,537). 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 13, 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.
Overall
8.7
Entertainment
8.7
Crew
9.1
Comfort
8.8
Food
8.6
Boarding
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Overall
8.7
Entertainment
8.7
Crew
9.1
Comfort
8.8
Food
8.6
Boarding
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Overall
8.7
Entertainment
8.7
Crew
9.1
Comfort
8.8
Food
8.6
Boarding
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Overall
8.7
Entertainment
8.7
Crew
9.1
Comfort
8.8
Food
8.6
Boarding
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Overall
8.7
Entertainment
8.7
Crew
9.1
Comfort
8.8
Food
8.6
Boarding
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Overall
8.7
Entertainment
8.7
Crew
9.1
Comfort
8.8
Food
8.6
Boarding
8.8
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.
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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 13, 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 13, 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$688 | Average$888 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$743 | Average$936 | FlexibilityNo cancel fee | On-timeN/A |