$362+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
May 14 — May 211
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
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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 April 14, 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 14, 2026.
This Gotogate deal was found by Cheapflights users on 4/9. 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 Gotogate 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
Multiple Airlines
Tue 10/611:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$750
This oojo deal was found by Cheapflights users on 4/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Sun 9/2710:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/9![China Airlines logo]()
$757
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 8/317:00 am
ONT
- HAN
2 stops24h 35m
Delta
Wed 9/2311:10 pm
HAN
- ONT
2 stops38h 34m
Delta
Deal found 4/12![Delta logo]()
$761
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
ONT
- SGN
2 stops40h 35m
Delta
Wed 9/307:30 am
SGN
- ONT
2 stops29h 10m
Delta
Deal found 4/9![Delta logo]()
$765
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:00 am
ONT
- SGN
2 stops26h 10m
Delta
Tue 9/157:30 am
SGN
- ONT
2 stops29h 10m
Delta
Deal found 4/9![Delta logo]()
$766
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 9/107:00 am
ONT
- HAN
2 stops37h 35m
Korean Air
Mon 9/1411:10 pm
HAN
- ONT
2 stops37h 30m
Korean Air
Deal found 4/12![Korean Air logo]()
$766
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 Booking.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:45 am
ONT
- SGN
1 stop25h 35m
Multiple Airlines
Sat 9/1211:20 am
SGN
- ONT
1 stop21h 20m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$769
This Korean Air deal was found by Cheapflights users on 4/9. 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.
Sat 8/297:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Fri 10/27:30 am
SGN
- ONT
2 stops23h 46m
Korean Air
Deal found 4/9![Korean Air logo]()
$771
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 Trip.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Tue 9/110:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 4/9![China Airlines logo]()
$775
This Trip.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Wed 9/210:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 4/9![China Airlines logo]()
$777
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 14, 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 14, 2026.
This oojo deal was found by Cheapflights users on 4/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sat 9/1210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 4/9![China Airlines logo]()
$823
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 9/107:00 am
ONT
- DAD
2 stops41h 20m
Korean Air
Mon 9/1410:55 pm
DAD
- ONT
2 stops32h 21m
Korean Air
Deal found 4/12![Korean Air logo]()
$891
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 Delta deal was found by Cheapflights users on 4/11. 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 5/57:00 am
ONT
- HAN
2 stops24h 35m
Delta
Sun 5/1011:10 pm
HAN
- ONT
2 stops38h 24m
Delta
Deal found 4/11![Delta logo]()
$990
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:00 am
ONT
- SGN
2 stops25h 55m
United Airlines
Sun 8/307:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 4/9![United Airlines logo]()
$1,326
This China Airlines deal was found by Cheapflights users on 4/9. 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 4/2612:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sat 5/165:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/9![China Airlines logo]()
$856
This China Airlines deal was found by Cheapflights users on 4/9. 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.
Wed 9/912:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Mon 9/145:30 pm
DAD
- ONT
1 stop39h 10m
China Airlines
Deal found 4/9![China Airlines logo]()
$896
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.
Tue 5/57:00 am
ONT
- DAD
2 stops24h 05m
Multiple Airlines
Mon 5/1810:55 pm
DAD
- ONT
2 stops32h 15m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$999
This China Airlines deal was found by Cheapflights users on 4/9. 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.
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 4/9![China Airlines logo]()
$901
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 stops24h 05m
Delta
Sat 5/163:55 pm
DAD
- ONT
2 stops44h 39m
Delta
Deal found 4/12![Delta logo]()
$1,120
This Trip.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:45 am
ONT
- DAD
1 stop25h 45m
Multiple Airlines
Sun 8/305:35 am
DAD
- ONT
2 stops27h 05m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$1,035
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 4/272:20 pm
ONT
- DAD
2 stops40h 45m
Delta
Tue 5/2610:55 pm
DAD
- ONT
2 stops37h 39m
Delta
Deal found 4/14![Delta logo]()
$1,135
This China Airlines deal was found by Cheapflights users on 4/9. 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 8/212:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Wed 8/195:30 pm
SGN
- ONT
1 stop39h 10m
China Airlines
Deal found 4/9![China Airlines logo]()
$956
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
- DAD
2 stops25h 05m
Multiple Airlines
Fri 5/153:55 pm
DAD
- ONT
2 stops39h 10m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,123
This China Airlines deal was found by Cheapflights users on 4/11. 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.
Mon 5/412:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Tue 5/125:50 pm
HAN
- ONT
1 stop38h 10m
China Airlines
Deal found 4/11![China Airlines logo]()
$986
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Thu 5/147:00 am
SGN
- ONT
2 stops19h 22m
United Airlines
Deal found 4/12![United Airlines logo]()
$1,504
This China Airlines deal was found by Cheapflights users on 4/11. 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.
Mon 5/412:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Mon 5/1111:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 4/11![China Airlines logo]()
$991
This Mytrip deal was found by Cheapflights users on 4/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:10 am
ONT
- DAD
2 stops26h 40m
Multiple Airlines
Mon 5/1810:05 am
DAD
- ONT
2 stops21h 55m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$1,330
This China Airlines deal was found by Cheapflights users on 4/9. 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.
Mon 8/3112:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sun 9/276:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 4/9![China Airlines logo]()
$1,057
This China Airlines deal was found by Cheapflights users on 4/11. 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 9/1212:45 am
ONT
- DAD
2 stops29h 45m
China Airlines
Sun 9/275:30 pm
DAD
- ONT
1 stop38h 30m
China Airlines
Deal found 4/11![China Airlines logo]()
$1,067
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:20 am
ONT
- SGN
2 stops26h 55m
Delta
Thu 7/167:30 am
SGN
- ONT
2 stops29h 15m
Delta
Deal found 4/9![Delta logo]()
$1,756
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 Delta deal was found by Cheapflights users on 4/11. 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 6/306:00 am
ONT
- SGN
2 stops26h 10m
Delta
Tue 7/147:30 am
SGN
- ONT
2 stops23h 51m
Delta
Deal found 4/11![Delta logo]()
$1,756
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 7/56:00 am
ONT
- SGN
2 stops27h 15m
Delta
Thu 7/237:30 am
SGN
- ONT
2 stops23h 51m
Delta
Deal found 4/13![Delta logo]()
$1,785
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 7/46:00 am
ONT
- SGN
2 stops26h 10m
Delta
Thu 7/237:30 am
SGN
- ONT
2 stops23h 51m
Delta
Deal found 4/13![Delta logo]()
$1,785
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.
Mon 7/612:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Mon 8/1710:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 4/12![China Airlines logo]()
$1,301
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.
Tue 9/2212:10 am
ONT
- DAD
1 stop18h 50m
China Airlines
Wed 10/145:45 am
DAD
- ONT
2 stops26h 15m
China Airlines
Deal found 4/14![China Airlines logo]()
$1,326
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.
Sat 6/2712:10 am
ONT
- SGN
1 stop20h 10m
China Airlines
Tue 8/2510:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 4/12![China Airlines logo]()
$1,651
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.
Sat 6/1312:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sun 8/165:30 pm
SGN
- ONT
1 stop39h 10m
China Airlines
Deal found 4/12![China Airlines logo]()
$1,746
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated April 14, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated April 14, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 4/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Wed 10/710:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/9![China Airlines logo]()
$814
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 4/207:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Sun 5/1011:10 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 4/10. 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 4/207:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Tue 5/1911:45 pm
SGN
- ONT
2 stops31h 25m
Korean Air
Deal found 4/10![Korean Air logo]()
$791
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 4/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Tue 5/1910:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/11![China Airlines logo]()
$809
This oojo deal was found by Cheapflights users on 4/10. 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 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
Sun 5/105:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/10![China Airlines logo]()
$783
This flugladen.de deal was found by Cheapflights users on 4/11. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sun 5/105:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/11![China Airlines logo]()
$790
This oojo deal was found by Cheapflights users on 4/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sun 5/105:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/9![China Airlines logo]()
$757
This oojo deal was found by Cheapflights users on 4/9. 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 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
Mon 5/185:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/9![China Airlines logo]()
$781
This oojo deal was found by Cheapflights users on 4/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Thu 5/215:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/9![China Airlines logo]()
$788
This oojo deal was found by Cheapflights users on 4/10. 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 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 stop26h 10m
China Airlines
Tue 5/2610:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/10![China Airlines logo]()
$815
This Delta deal was found by Cheapflights users on 4/10. 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.
Tue 5/57:00 am
ONT
- SGN
2 stops25h 10m
Delta
Thu 5/217:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/10![Delta logo]()
$786
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 14, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 14, 2026.
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- HAN
2 stops37h 50m
Delta
Deal found 4/9![Delta logo]()
$362
This ScholarTrip deal was found by Cheapflights users on 4/11. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 4/11![Korean Air logo]()
$385
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 Korean Air deal was found by Cheapflights users on 4/9. 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.
Sat 4/257:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Deal found 4/9![Korean Air logo]()
$401
This Kissandfly.com deal was found by Cheapflights users on 4/10. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Deal found 4/10![Korean Air logo]()
$407
This Delta deal was found by Cheapflights users on 4/10. 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.
Sat 4/257:00 am
ONT
- SGN
2 stops26h 15m
Delta
Deal found 4/10![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
ONT
- DAD
2 stops42h 20m
Delta
Deal found 4/9![Delta logo]()
$412
This oojo deal was found by Cheapflights users on 4/9. 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 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 stop26h 10m
China Airlines
Deal found 4/9![China Airlines logo]()
$423
This oojo deal was found by Cheapflights users on 4/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/612:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 4/10![China Airlines logo]()
$424
This Korean Air deal was found by Cheapflights users on 4/9. 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.
Sat 4/257:00 am
ONT
- SGN
2 stops25h 10m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$425
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 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $750 (Gotogate) |
One-way from | $362 (Delta) |
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 14, 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 - DAD
ONTDAD
Ontario
Fri 9/4
12:45 am-4:30 pm
1 stop25h 45m
Da Nang
Sat 9/12
10:00 am-6:40 pm
1 stop22h 40m
$823
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 4/26
12:10 am-9:40 am
1 stop19h 30m
Ho Chi Minh City
Sat 5/16
5:30 pm-6:00 pm
1 stop38h 30m
$856
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Thu 9/10
7:00 am-2:20 pm
2 stops41h 20m
Da Nang
Mon 9/14
10:55 pm-5:16 pm
2 stops32h 21m
$891
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Wed 9/9
12:45 am-4:30 pm
1 stop25h 45m
Da Nang
Mon 9/14
5:30 pm-6:40 pm
1 stop39h 10m
$896
Quickest round-trip
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
$901
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 8/2
12:45 am-4:20 pm
1 stop25h 35m
Ho Chi Minh City
Wed 8/19
5:30 pm-6:40 pm
1 stop39h 10m
$956
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
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 5/4
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
Tue 5/12
5:50 pm-6:00 pm
1 stop38h 10m
$986
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Tue 5/5
7:00 am-9:35 pm
2 stops24h 35m
Hanoi Noibai
Sun 5/10
11:10 pm-11:34 pm
2 stops38h 24m
$990
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 5/4
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
Mon 5/11
11:30 am-6:00 pm
1 stop20h 30m
$991
Showing 1-10 of 59 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, March is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $478). Flying from Ontario to Vietnam in June is currently the most expensive (average of $636). 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 14, 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.
Crew
9.2
Food
8.6
Overall
8.9
Comfort
8.9
Entertainment
8.8
Boarding
9.0
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Crew
9.2
Food
8.6
Overall
8.9
Comfort
8.9
Entertainment
8.8
Boarding
9.0
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Crew
9.2
Food
8.6
Overall
8.9
Comfort
8.9
Entertainment
8.8
Boarding
9.0
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Crew
9.2
Food
8.6
Overall
8.9
Comfort
8.9
Entertainment
8.8
Boarding
9.0
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Crew
9.2
Food
8.6
Overall
8.9
Comfort
8.9
Entertainment
8.8
Boarding
9.0
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Crew
9.2
Food
8.6
Overall
8.9
Comfort
8.9
Entertainment
8.8
Boarding
9.0
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 14, 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 14, 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 |