$386+ Cheap flights from Ontario (ONT) to Vietnam
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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
May 17 — May 241
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 April 17, 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 April 17, 2026.
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am
ONT
- HAN
2 stops24h 35m
Delta
Wed 9/2311:10 pm
HAN
- ONT
2 stops38h 34m
Delta
Deal found 4/16![Delta logo]()
$761
This Korean Air deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Mon 10/1911:10 pm
HAN
- ONT
2 stops32h 07m
Korean Air
Deal found 4/16![Korean Air logo]()
$766
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:00 pm
ONT
- HAN
2 stops41h 35m
Delta
Sun 11/111:05 pm
HAN
- ONT
2 stops38h 38m
Delta
Deal found 4/14![Delta logo]()
$767
This Booking.com deal was found by Cheapflights users on 4/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:50 pm
ONT
- SGN
1 stop27h 00m
Multiple Airlines
Sun 11/1511:20 am
SGN
- ONT
1 stop20h 30m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$768
This Trip.com deal was found by Cheapflights users on 4/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Mon 5/1811:45 pm
SGN
- ONT
2 stops31h 25m
Korean Air
Deal found 4/12![Korean Air logo]()
$772
This Expedia deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:09 pm
ONT
- SGN
2 stops27h 21m
Multiple Airlines
Fri 9/1810:50 am
SGN
- ONT
1 stop21h 10m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$776
This CrystalTravel deal was found by Cheapflights users on 4/12. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Sun 12/611:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 4/12![China Airlines logo]()
$779
This oojo deal was found by Cheapflights users on 4/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Sun 9/205:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/13![China Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 am
ONT
- SGN
2 stops39h 35m
Delta
Mon 11/238:00 am
SGN
- ONT
2 stops29h 43m
Delta
Deal found 4/13![Delta logo]()
$786
This ScholarTrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:00 am
ONT
- SGN
2 stops24h 25m
Korean Air
Thu 11/128:00 am
SGN
- ONT
2 stops24h 17m
Korean Air
Deal found 4/16![Korean Air logo]()
$790
This Korean Air deal was found by Cheapflights users on 4/13. 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.
Mon 11/167:00 am
ONT
- SGN
2 stops25h 20m
Korean Air
Mon 12/1411:50 pm
SGN
- ONT
2 stops32h 27m
Korean Air
Deal found 4/13![Korean Air logo]()
$791
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/191:29 pm
ONT
- SGN
2 stops42h 41m
Delta
Mon 5/187:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/14![Delta logo]()
$792
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 April 17, 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 April 17, 2026.
This Delta deal was found by Cheapflights users on 4/12. 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 9/96:00 am
ONT
- HAN
2 stops25h 35m
Delta
Wed 9/2311:10 pm
HAN
- ONT
2 stops38h 34m
Delta
Deal found 4/12![Delta logo]()
$761
This Korean Air deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Mon 9/1411:45 pm
SGN
- ONT
2 stops36h 55m
Korean Air
Deal found 4/14![Korean Air logo]()
$791
This China Airlines deal was found by Cheapflights users on 4/12. 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 9/912:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Mon 9/145:30 pm
SGN
- ONT
1 stop39h 10m
China Airlines
Deal found 4/12![China Airlines logo]()
$851
This Korean Air deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:00 am
ONT
- SGN
2 stops26h 10m
Multiple Airlines
Mon 5/1811:45 pm
SGN
- ONT
2 stops31h 25m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$968
This STARLUX Airlines deal was found by Cheapflights users on 4/13. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:10 pm
ONT
- DAD
1 stop28h 25m
STARLUX Airlines
Thu 10/16:45 pm
DAD
- ONT
1 stop36h 20m
STARLUX Airlines
Deal found 4/13![STARLUX Airlines logo]()
$1,065
This Qatar Airways deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:00 am
ONT
- HAN
2 stops35h 15m
Qatar Airways
Sun 5/102:00 am
HAN
- ONT
2 stops35h 59m
Qatar Airways
Deal found 4/16![Qatar Airways logo]()
$1,132
This United Airlines deal was found by Cheapflights users on 4/13. 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 9/38:00 am
ONT
- SGN
2 stops24h 05m
United Airlines
Sun 9/137:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,158
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am
ONT
- HAN
2 stops24h 35m
Delta
Thu 10/2911:05 pm
HAN
- ONT
2 stops32h 12m
Delta
Deal found 4/14![Delta logo]()
$811
This Korean Air deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Sun 5/241:55 pm
SGN
- ONT
2 stops41h 15m
Korean Air
Deal found 4/14![Korean Air logo]()
$891
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:55 am
ONT
- HAN
2 stops45h 40m
Delta
Sat 10/3111:05 pm
HAN
- ONT
2 stops51h 11m
Delta
Deal found 4/14![Delta logo]()
$823
This China Airlines deal was found by Cheapflights users on 4/12. 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 9/912:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Mon 9/1411:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/12![China Airlines logo]()
$941
This Korean Air deal was found by Cheapflights users on 4/12. 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 5/146:00 am
ONT
- SGN
2 stops26h 10m
Multiple Airlines
Mon 5/187:30 am
SGN
- ONT
2 stops23h 40m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$968
This Korean Air deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:00 am
ONT
- HAN
2 stops25h 35m
Korean Air
Sun 10/2511:05 pm
HAN
- ONT
2 stops32h 12m
Korean Air
Deal found 4/16![Korean Air logo]()
$966
This Qatar Airways deal was found by Cheapflights users on 4/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:39 am
ONT
- HAN
2 stops30h 36m
Qatar Airways
Tue 5/261:55 am
HAN
- ONT
2 stops30h 52m
Qatar Airways
Deal found 4/13![Qatar Airways logo]()
$1,151
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:00 am
ONT
- SGN
2 stops24h 05m
United Airlines
Mon 10/57:00 am
SGN
- ONT
2 stops19h 20m
United Airlines
Deal found 4/15![United Airlines logo]()
$1,158
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:00 am
ONT
- SGN
2 stops26h 15m
Delta
Sun 5/247:30 am
SGN
- ONT
2 stops29h 04m
Delta
Deal found 4/13![Delta logo]()
$980
This China Airlines deal was found by Cheapflights users on 4/12. 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.
Sun 9/612:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sun 9/276:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 4/12![China Airlines logo]()
$1,090
This Korean Air deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Thu 9/1711:10 pm
HAN
- ONT
2 stops32h 06m
Korean Air
Deal found 4/16![Korean Air logo]()
$995
This China Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 8/2610:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 4/15![China Airlines logo]()
$1,117
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
ONT
- SGN
2 stops25h 55m
United Airlines
Wed 5/137:00 am
SGN
- ONT
2 stops24h 52m
United Airlines
Deal found 4/14![United Airlines logo]()
$1,240
This Korean Air deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Thu 9/1711:10 pm
HAN
- ONT
2 stops32h 06m
Korean Air
Deal found 4/16![Korean Air logo]()
$1,045
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 am
ONT
- DAD
2 stops24h 05m
Delta
Sun 8/2310:55 pm
DAD
- ONT
2 stops32h 21m
Delta
Deal found 4/15![Delta logo]()
$1,070
This China Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sat 5/2310:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/16![China Airlines logo]()
$1,147
This Delta deal was found by Cheapflights users on 4/12. 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.
Tue 5/57:00 am
ONT
- DAD
2 stops41h 20m
Delta
Fri 5/153:55 pm
DAD
- ONT
2 stops44h 39m
Delta
Deal found 4/12![Delta logo]()
$1,070
This Korean Air deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Mon 11/212:20 pm
HAN
- ONT
2 stops43h 57m
Korean Air
Deal found 4/14![Korean Air logo]()
$1,092
This China Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sat 8/2210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 4/14![China Airlines logo]()
$1,217
This Korean Air deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:00 am
ONT
- DAD
2 stops25h 05m
Korean Air
Mon 8/2410:55 pm
DAD
- ONT
2 stops32h 21m
Korean Air
Deal found 4/15![Korean Air logo]()
$1,125
This Delta deal was found by Cheapflights users on 4/12. 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.
Mon 4/2711:53 am
ONT
- DAD
2 stops43h 12m
Delta
Tue 5/2610:55 pm
DAD
- ONT
2 stops37h 39m
Delta
Deal found 4/12![Delta logo]()
$1,135
This China Airlines deal was found by Cheapflights users on 4/13. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Thu 5/2110:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/13![China Airlines logo]()
$1,237
This China Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Thu 8/2710:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 4/15![China Airlines logo]()
$1,272
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated April 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/191:29 pm
ONT
- SGN
2 stops42h 41m
Delta
Mon 5/187:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/14![Delta logo]()
$792
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:00 am
ONT
- SGN
2 stops26h 15m
Delta
Mon 5/187:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/14![Delta logo]()
$786
This iWofly deal was found by Cheapflights users on 4/12. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Mon 5/185:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/12![China Airlines logo]()
$841
This Trip.com deal was found by Cheapflights users on 4/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Mon 5/1811:45 pm
SGN
- ONT
2 stops31h 25m
Korean Air
Deal found 4/12![Korean Air logo]()
$772
This oojo deal was found by Cheapflights users on 4/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Tue 5/1910:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/12![China Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
ONT
- SGN
2 stops25h 10m
Delta
Tue 5/197:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/16![Delta logo]()
$836
This Korean Air deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Sun 5/1711:10 pm
HAN
- ONT
2 stops32h 00m
Korean Air
Deal found 4/14![Korean Air logo]()
$816
This Korean Air deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Sun 5/1711:10 pm
HAN
- ONT
2 stops32h 00m
Korean Air
Deal found 4/14![Korean Air logo]()
$766
This Korean Air deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Mon 5/1111:45 pm
SGN
- ONT
2 stops31h 25m
Korean Air
Deal found 4/14![Korean Air logo]()
$791
This oojo deal was found by Cheapflights users on 4/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/412:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Tue 5/1210:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/12![China Airlines logo]()
$815
This Korean Air deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
ONT
- SGN
2 stops26h 15m
Multiple Airlines
Tue 5/197:30 am
SGN
- ONT
2 stops23h 40m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$840
This Justfly.com deal was found by Cheapflights users on 4/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Wed 5/2010:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/13![China Airlines logo]()
$831
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 April 17, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Trip.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Deal found 4/16![Korean Air logo]()
$386
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:00 am
ONT
- HAN
2 stops25h 35m
Delta
Deal found 4/13![Delta logo]()
$387
This Korean Air deal was found by Cheapflights users on 4/13. 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 9/97:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 4/13![Korean Air logo]()
$390
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:05 pm
ONT
- HAN
2 stops38h 30m
Delta
Deal found 4/13![Delta logo]()
$399
This Kissandfly.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Deal found 4/16![Korean Air logo]()
$407
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
ONT
- SGN
2 stops25h 10m
Delta
Deal found 4/13![Delta logo]()
$408
This Korean Air deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Deal found 4/15![Korean Air logo]()
$411
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:00 am
ONT
- SGN
2 stops26h 15m
Delta
Deal found 4/14![Delta logo]()
$433
This Korean Air deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
ONT
- SGN
2 stops25h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$435
This Korean Air deal was found by Cheapflights users on 4/13. 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.
Tue 5/56:00 am
ONT
- SGN
2 stops26h 10m
Korean Air
Deal found 4/13![Korean Air logo]()
$436
This oojo deal was found by Cheapflights users on 4/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Deal found 4/13![China Airlines logo]()
$440
This oojo deal was found by Cheapflights users on 4/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 4/13![China Airlines logo]()
$457
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 April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $761 (Delta) |
One-way from | $386 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $745 |
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 2,558,603 searches. Data last updated April 17, 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
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Wed 9/9
6:00 am-9:35 pm
2 stops25h 35m
Hanoi Noibai
Wed 9/23
11:10 pm-11:44 pm
2 stops38h 34m
$761
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Thu 9/10
7:00 am-10:10 pm
2 stops25h 10m
Ho Chi Minh City
Mon 9/14
11:45 pm-10:40 pm
2 stops36h 55m
$791
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 9/28
7:00 am-9:35 pm
2 stops24h 35m
Hanoi Noibai
Thu 10/29
11:05 pm-5:17 pm
2 stops32h 12m
$811
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sun 9/27
9:55 am-9:35 pm
2 stops45h 40m
Hanoi Noibai
Sat 10/31
11:05 pm-12:16 pm
2 stops51h 11m
$823
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Wed 9/9
12:45 am-4:20 pm
1 stop25h 35m
Ho Chi Minh City
Mon 9/14
5:30 pm-6:40 pm
1 stop39h 10m
$851
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 5/3
7:00 am-10:10 pm
2 stops25h 10m
Ho Chi Minh City
Sun 5/24
1:55 pm-5:10 pm
2 stops41h 15m
$891
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Wed 9/9
12:45 am-10:30 am
1 stop19h 45m
Hanoi Noibai
Mon 9/14
11:30 am-6:40 pm
1 stop21h 10m
$941
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sun 9/27
6:00 am-9:35 pm
2 stops25h 35m
Hanoi Noibai
Sun 10/25
11:05 pm-5:17 pm
2 stops32h 12m
$966
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 5/11
6:00 am-10:10 pm
2 stops26h 10m
Ho Chi Minh City
Mon 5/18
11:45 pm-5:10 pm
2 stops31h 25m
$968
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Thu 5/14
6:00 am-10:10 pm
2 stops26h 10m
Ho Chi Minh City
Mon 5/18
7:30 am-5:10 pm
2 stops23h 40m
$968
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
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
What is the cheapest month to book a flight from Ontario to Vietnam?
Currently, April is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $360). Flying from Ontario to Vietnam in February is currently the most expensive (average of $1,520). 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.
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 April 17, 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.
Entertainment
8.8
Comfort
8.9
Boarding
9.0
Overall
8.9
Food
8.6
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Comfort
8.9
Boarding
9.0
Overall
8.9
Food
8.6
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Comfort
8.9
Boarding
9.0
Overall
8.9
Food
8.6
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Comfort
8.9
Boarding
9.0
Overall
8.9
Food
8.6
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Comfort
8.9
Boarding
9.0
Overall
8.9
Food
8.6
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Comfort
8.9
Boarding
9.0
Overall
8.9
Food
8.6
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
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 April 17, 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 2,558,603 searches. Data last updated April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$649 | Average$772 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$654 | Average$705 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$695 | Average$822 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$742 | Average$812 | FlexibilityNo cancel fee | On-timeN/A |