$377+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Apr 29 — May 61
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 March 30, 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 March 30, 2026.
This oojo deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 8/1412:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Sat 9/510:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 3/27![China Airlines logo]()
$728
This lol.travel deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel 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
Wed 5/612:05 pm
HAN
- ONT
2 stops43h 05m
Korean Air
Deal found 3/25![Korean Air logo]()
$730
This flugladen.de deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:50 pm
ONT
- SGN
1 stop27h 00m
China Airlines
Mon 11/1611:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 3/26![China Airlines logo]()
$733
This flugladen.de deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Tue 5/125:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/25![China Airlines logo]()
$737
This Gotogate deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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.
Thu 9/1712:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Sat 10/310:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/26![China Airlines logo]()
$739
This Gotogate deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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.
Sun 8/3012:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Mon 9/2810:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/26![China Airlines logo]()
$741
This Gotogate deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 8/1512:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Sat 9/510:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 3/26![China Airlines logo]()
$743
This oojo deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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.
Wed 9/3012:10 am
ONT
- DAD
1 stop26h 20m
China Airlines
Thu 10/1510:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 3/26![China Airlines logo]()
$745
This Gotogate deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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.
Tue 11/310:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Sat 11/2811:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 3/26![China Airlines logo]()
$750
This oojo deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 9/1412:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Tue 9/2911:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 3/27![China Airlines logo]()
$750
This oojo deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 stop18h 55m
China Airlines
Fri 9/185:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/26![China Airlines logo]()
$751
This SmartFares deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Sun 9/610:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 3/29![China Airlines logo]()
$756
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 March 30, 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 March 30, 2026.
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 5/76:45 am
ONT
- SGN
2 stops25h 25m
Korean Air
Sun 5/1711:45 pm
SGN
- ONT
2 stops31h 25m
Korean Air
Deal found 3/29![Korean Air logo]()
$791
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/246:00 am
ONT
- SGN
2 stops26h 10m
Delta
Tue 5/127:30 am
SGN
- ONT
2 stops30h 04m
Delta
Deal found 3/25![Delta logo]()
$826
This China Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/2112:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Fri 5/810:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/26![China Airlines logo]()
$867
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 4/46:49 pm
ONT
- SGN
2 stops37h 16m
United Airlines
Mon 5/117:00 am
SGN
- ONT
2 stops24h 52m
United Airlines
Deal found 3/27![United Airlines logo]()
$985
This EVA Air deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:59 pm
ONT
- DAD
2 stops25h 36m
Multiple Airlines
Tue 5/2612:55 pm
DAD
- ONT
2 stops37h 17m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,125
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 5/96:45 am
ONT
- SGN
2 stops39h 50m
Korean Air
Sun 5/171:55 pm
SGN
- ONT
2 stops41h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$831
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/217:00 am
ONT
- HAN
2 stops24h 35m
Delta
Wed 5/611:10 pm
HAN
- ONT
2 stops32h 00m
Delta
Deal found 3/29![Delta logo]()
$885
This Justfly.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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.
Wed 4/2212:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Wed 5/135:50 pm
HAN
- ONT
1 stop38h 10m
China Airlines
Deal found 3/25![China Airlines logo]()
$896
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 5/96:45 am
ONT
- SGN
2 stops39h 50m
Korean Air
Fri 5/151:55 pm
SGN
- ONT
2 stops41h 10m
Korean Air
Deal found 3/29![Korean Air logo]()
$871
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/206:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Wed 5/137:00 am
SGN
- ONT
2 stops24h 52m
United Airlines
Deal found 3/25![United Airlines logo]()
$988
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 5/96:45 am
ONT
- SGN
2 stops25h 25m
Delta
Sun 8/237:30 am
SGN
- ONT
2 stops29h 10m
Delta
Deal found 3/25![Delta logo]()
$916
This China Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/2112:10 am
ONT
- HAN
1 stop20h 25m
China Airlines
Thu 5/711:35 am
HAN
- ONT
1 stop20h 25m
China Airlines
Deal found 3/29![China Airlines logo]()
$956
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 stops41h 20m
Korean Air
Mon 5/1810:55 pm
DAD
- ONT
2 stops32h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$891
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/276:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Wed 5/137:00 am
SGN
- ONT
2 stops24h 52m
United Airlines
Deal found 3/26![United Airlines logo]()
$988
This Delta deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/292:20 pm
ONT
- SGN
2 stops42h 55m
Delta
Fri 5/291:55 pm
SGN
- ONT
2 stops41h 10m
Delta
Deal found 3/26![Delta logo]()
$921
This China Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/1612:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Tue 5/511:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 3/29![China Airlines logo]()
$966
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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
- DAD
2 stops25h 05m
Delta
Sat 9/1210:55 pm
DAD
- ONT
2 stops38h 49m
Delta
Deal found 3/25![Delta logo]()
$926
This Korean Air deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 9/177:00 am
ONT
- DAD
2 stops24h 05m
Korean Air
Mon 9/213:55 pm
DAD
- ONT
2 stops39h 21m
Korean Air
Deal found 3/27![Korean Air logo]()
$931
This China Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/1612:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Mon 5/1110:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/26![China Airlines logo]()
$987
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 9/116:00 am
ONT
- DAD
2 stops25h 05m
Delta
Tue 9/1510:55 pm
DAD
- ONT
2 stops38h 49m
Delta
Deal found 3/27![Delta logo]()
$926
This China Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 9/1612:10 am
ONT
- DAD
2 stops40h 55m
China Airlines
Mon 9/215:30 pm
DAD
- ONT
1 stop38h 30m
China Airlines
Deal found 3/26![China Airlines logo]()
$1,013
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/237:00 am
ONT
- HAN
2 stops24h 35m
Delta
Thu 5/711:10 pm
HAN
- ONT
2 stops32h 00m
Delta
Deal found 3/29![Delta logo]()
$935
This China Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 9/1912:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Thu 9/246:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 3/25![China Airlines logo]()
$1,023
This Qatar Airways deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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.
Wed 5/610:39 am
ONT
- DAD
3 stops36h 51m
Multiple Airlines
Mon 5/182:50 pm
DAD
- ONT
3 stops41h 57m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,693
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 9/185:55 pm
ONT
- DAD
2 stops37h 10m
Delta
Mon 9/2110:55 pm
DAD
- ONT
2 stops37h 45m
Delta
Deal found 3/27![Delta logo]()
$981
This China Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/1412:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Thu 5/711:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 3/25![China Airlines logo]()
$1,032
This China Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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
Fri 9/186:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 3/26![China Airlines logo]()
$1,032
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/177:00 am
ONT
- HAN
2 stops24h 35m
Delta
Thu 5/711:10 pm
HAN
- ONT
2 stops38h 24m
Delta
Deal found 3/25![Delta logo]()
$1,036
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/196:00 am
ONT
- HAN
2 stops25h 35m
Delta
Thu 5/711:10 pm
HAN
- ONT
2 stops32h 00m
Delta
Deal found 3/25![Delta logo]()
$1,036
This China Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 stop19h 45m
China Airlines
Mon 9/216:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 3/30![China Airlines logo]()
$1,039
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated March 30, 2026 and is based on user searches.
This lol.travel deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel 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
Wed 5/612:05 pm
HAN
- ONT
2 stops43h 05m
Korean Air
Deal found 3/25![Korean Air logo]()
$730
This Delta deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 stops25h 10m
Delta
Sun 5/107:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 3/26![Delta logo]()
$786
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/217:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Mon 5/1111:10 pm
HAN
- ONT
2 stops32h 00m
Korean Air
Deal found 3/29![Korean Air logo]()
$766
This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 stop19h 30m
China Airlines
Thu 5/1410:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/25![China Airlines logo]()
$789
This oojo deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/2312:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Fri 5/110:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/26![China Airlines logo]()
$785
This flugladen.de deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Tue 5/125:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/25![China Airlines logo]()
$737
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/266:00 am
ONT
- HAN
2 stops25h 35m
Delta
Tue 5/1211:10 pm
HAN
- ONT
2 stops38h 24m
Delta
Deal found 3/29![Delta logo]()
$760
This Trip.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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.
Sun 4/267:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Tue 5/127:30 am
SGN
- ONT
2 stops23h 40m
Korean Air
Deal found 3/25![Korean Air logo]()
$784
This Trip.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/277:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Wed 5/131:55 pm
SGN
- ONT
2 stops41h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$760
This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 5/1810:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/25![China Airlines logo]()
$728
This oojo deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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
Fri 5/2910:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/26![China Airlines logo]()
$759
This oojo deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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
Wed 5/205:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/27![China Airlines logo]()
$783
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 March 30, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
This SmartFares deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 3/26![Korean Air logo]()
$377
This ScholarTrip deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 stops37h 35m
Korean Air
Deal found 3/30![Korean Air logo]()
$385
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 9/37:00 am
ONT
- HAN
2 stops24h 35m
Delta
Deal found 3/29![Delta logo]()
$387
This Korean Air deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 8/247:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 3/25![Korean Air logo]()
$389
This Korean Air deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/167:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 3/25![Korean Air logo]()
$390
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
ONT
- HAN
2 stops27h 15m
United Airlines
Deal found 3/29![United Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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.
Sun 4/267:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$398
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 8/227:13 pm
ONT
- HAN
2 stops37h 02m
United Airlines
Deal found 3/29![United Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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 4/147:00 am
ONT
- SGN
2 stops39h 35m
Delta
Deal found 3/25![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 8/117:00 am
ONT
- HAN
2 stops24h 35m
Delta
Deal found 3/26![Delta logo]()
$408
This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” 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
Deal found 3/25![China Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” 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 4/266:00 am
ONT
- SGN
3 stops26h 05m
United Airlines
Deal found 3/29![United Airlines logo]()
$410
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 March 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $728 (oojo) |
One-way from | $377 (SmartFares) |
Popular in | June |
Cheapest in | September |
Average price | $733 |
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 March 30, 2026.
Use the filters below to find and compare flights from Ontario to Vietnam that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Thu 5/7
6:45 am-10:10 pm
2 stops25h 25m
Ho Chi Minh City
Sun 5/17
11:45 pm-5:10 pm
2 stops31h 25m
$791
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Fri 4/24
6:00 am-10:10 pm
2 stops26h 10m
Ho Chi Minh City
Tue 5/12
7:30 am-11:34 pm
2 stops30h 04m
$826
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sat 5/9
6:45 am-12:35 pm
2 stops39h 50m
Ho Chi Minh City
Sun 5/17
1:55 pm-5:10 pm
2 stops41h 15m
$831
Quickest round-trip
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Tue 4/21
12:10 am-9:40 am
1 stop19h 30m
Ho Chi Minh City
Fri 5/8
10:50 am-6:00 pm
1 stop21h 10m
$867
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sat 5/9
6:45 am-12:35 pm
2 stops39h 50m
Ho Chi Minh City
Fri 5/15
1:55 pm-5:05 pm
2 stops41h 10m
$871
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Tue 4/21
7:00 am-9:35 pm
2 stops24h 35m
Hanoi Noibai
Wed 5/6
11:10 pm-5:10 pm
2 stops32h 00m
$885
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Tue 5/5
7:00 am-2:20 pm
2 stops41h 20m
Da Nang
Mon 5/18
10:55 pm-5:10 pm
2 stops32h 15m
$891
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Wed 4/22
12:10 am-10:30 am
1 stop20h 20m
Hanoi Noibai
Wed 5/13
5:50 pm-6:00 pm
1 stop38h 10m
$896
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sat 5/9
6:45 am-10:10 pm
2 stops25h 25m
Ho Chi Minh City
Sun 8/23
7:30 am-10:40 pm
2 stops29h 10m
$916
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Wed 4/29
2:20 pm-11:15 pm
2 stops42h 55m
Ho Chi Minh City
Fri 5/29
1:55 pm-5:05 pm
2 stops41h 10m
$921
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 $304). Flying from Ontario to Vietnam in July is currently the most expensive (average of $705). 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 March 30, 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
Food
8.7
Overall
9.0
Boarding
9.0
Comfort
8.9
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
9.0
Boarding
9.0
Comfort
8.9
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
9.0
Boarding
9.0
Comfort
8.9
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
9.0
Boarding
9.0
Comfort
8.9
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
9.0
Boarding
9.0
Comfort
8.9
Crew
9.2
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
9.0
Boarding
9.0
Comfort
8.9
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 March 30, 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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$649 | Average$772 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$654 | Average$661 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$697 | Average$832 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$742 | Average$812 | FlexibilityNo cancel fee | On-timeN/A |