$445+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Aug 13 — Aug 201
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 July 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 July 14, 2026.
This Mytrip deal was found by Cheapflights users on 7/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:45 am
ONT
- DAD
2 stops31h 30m
Multiple Airlines
Sat 9/269:50 pm
DAD
- ONT
2 stops34h 10m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$931
This Delta deal was found by Cheapflights users on 7/9. 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.
Wed 10/146:20 am
ONT
- HAN
2 stops25h 15m
Delta
Tue 11/311:05 pm
HAN
- ONT
2 stops39h 41m
Delta
Deal found 7/9![Delta logo]()
$956
This Korean Air deal was found by Cheapflights users on 7/10. 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 10/196:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Tue 11/311:05 pm
HAN
- ONT
2 stops33h 07m
Korean Air
Deal found 7/10![Korean Air logo]()
$962
This Gotogate deal was found by Cheapflights users on 7/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sat 9/2610:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 7/11![China Airlines logo]()
$968
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 8/2312:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/1610:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 7/13![China Airlines logo]()
$970
This oojo deal was found by Cheapflights users on 7/11. 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.
Sat 8/2212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Tue 9/15:30 pm
DAD
- ONT
1 stop39h 10m
China Airlines
Deal found 7/11![China Airlines logo]()
$975
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 8/212:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sun 8/1611:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/13![China Airlines logo]()
$975
This oojo deal was found by Cheapflights users on 7/11. 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.
Sat 9/1212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sun 9/275:30 pm
DAD
- ONT
1 stop38h 30m
China Airlines
Deal found 7/11![China Airlines logo]()
$977
This Mytrip deal was found by Cheapflights users on 7/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:45 am
ONT
- DAD
2 stops23h 40m
Multiple Airlines
Sun 8/167:50 am
DAD
- ONT
2 stops24h 50m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$980
This oojo deal was found by Cheapflights users on 7/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sun 8/1611:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/14![China Airlines logo]()
$983
This China Airlines deal was found by Cheapflights users on 7/13. 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 8/1212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/13![China Airlines logo]()
$991
This FlightHub deal was found by Cheapflights users on 7/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sun 9/2011:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/12![China Airlines logo]()
$991
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 July 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 July 14, 2026.
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 am
ONT
- HAN
2 stops38h 35m
Delta
Mon 8/2411:10 pm
HAN
- ONT
2 stops38h 24m
Delta
Deal found 7/10![Delta logo]()
$956
This China Airlines deal was found by Cheapflights users on 7/12. 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 9/2712:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Mon 10/1911:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/12![China Airlines logo]()
$975
This Korean Air deal was found by Cheapflights users on 7/10. 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.
Sat 10/176:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Sun 11/112:20 pm
HAN
- ONT
2 stops43h 52m
Korean Air
Deal found 7/10![Korean Air logo]()
$1,012
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Mon 8/101:50 pm
ONT
- SGN
2 stops42h 05m
United Airlines
Tue 10/137:00 am
SGN
- ONT
2 stops27h 31m
United Airlines
Deal found 7/12![United Airlines logo]()
$1,043
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:45 am
ONT
- DAD
1 stop18h 15m
Multiple Airlines
Tue 9/111:45 pm
DAD
- ONT
2 stops48h 44m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$1,084
This STARLUX Airlines deal was found by Cheapflights users on 7/10. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:45 pm
ONT
- SGN
1 stop28h 00m
STARLUX Airlines
Thu 12/35:50 pm
SGN
- ONT
1 stop37h 05m
STARLUX Airlines
Deal found 7/10![STARLUX Airlines logo]()
$1,085
This Qatar Airways deal was found by Cheapflights users on 7/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:10 pm
ONT
- HAN
2 stops29h 05m
Qatar Airways
Mon 10/197:30 pm
HAN
- ONT
2 stops36h 33m
Qatar Airways
Deal found 7/12![Qatar Airways logo]()
$1,111
This China Airlines deal was found by Cheapflights users on 7/12. 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 9/1312:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Tue 9/2211:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/12![China Airlines logo]()
$975
This Delta deal was found by Cheapflights users on 7/13. 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 8/186:20 am
ONT
- DAD
2 stops24h 45m
Delta
Tue 9/810:55 pm
DAD
- ONT
2 stops37h 09m
Delta
Deal found 7/13![Delta logo]()
$1,033
This Korean Air deal was found by Cheapflights users on 7/14. 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.
Wed 8/126:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
Fri 8/217:30 am
SGN
- ONT
2 stops23h 51m
Korean Air
Deal found 7/14![Korean Air logo]()
$1,039
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Thu 10/19:25 am
ONT
- SGN
2 stops24h 50m
United Airlines
Wed 10/287:30 am
SGN
- ONT
2 stops21h 53m
United Airlines
Deal found 7/14![United Airlines logo]()
$1,046
This China Airlines deal was found by Cheapflights users on 7/12. 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.
Fri 8/2112:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sat 9/195:50 pm
HAN
- ONT
1 stop38h 10m
China Airlines
Deal found 7/12![China Airlines logo]()
$975
This Qatar Airways deal was found by Cheapflights users on 7/14. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:00 pm
ONT
- SGN
2 stops35h 50m
Qatar Airways
Mon 10/128:00 pm
SGN
- ONT
2 stops36h 03m
Qatar Airways
Deal found 7/14![Qatar Airways logo]()
$1,128
This Delta deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:20 am
ONT
- DAD
2 stops24h 45m
Delta
Wed 9/910:55 pm
DAD
- ONT
2 stops37h 45m
Delta
Deal found 7/12![Delta logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/199:00 am
ONT
- SGN
2 stops22h 55m
United Airlines
Sat 12/511:05 pm
SGN
- ONT
2 stops39h 01m
United Airlines
Deal found 7/11![United Airlines logo]()
$1,050
This China Airlines deal was found by Cheapflights users on 7/10. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Tue 11/311:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/10![China Airlines logo]()
$1,011
This Korean Air deal was found by Cheapflights users on 7/13. 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.
Thu 10/226:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Mon 10/263:45 pm
DAD
- ONT
2 stops39h 27m
Korean Air
Deal found 7/13![Korean Air logo]()
$1,116
This Delta deal was found by Cheapflights users on 7/9. 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.
Wed 8/266:20 am
ONT
- DAD
2 stops24h 45m
Delta
Wed 9/910:55 pm
DAD
- ONT
2 stops37h 09m
Delta
Deal found 7/9![Delta logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am
ONT
- SGN
2 stops27h 15m
United Airlines
Wed 11/256:00 am
SGN
- ONT
2 stops21h 01m
United Airlines
Deal found 7/10![United Airlines logo]()
$1,063
This China Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2711:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Mon 11/211:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/11![China Airlines logo]()
$1,036
This Delta deal was found by Cheapflights users on 7/12. 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 7/276:20 am
ONT
- HAN
2 stops25h 15m
Delta
Wed 8/511:10 pm
HAN
- ONT
2 stops37h 35m
Delta
Deal found 7/12![Delta logo]()
$1,046
This United Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Sat 9/197:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 7/11![United Airlines logo]()
$1,068
This Korean Air deal was found by Cheapflights users on 7/9. 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.
Sun 11/227:00 am
ONT
- DAD
2 stops40h 15m
Korean Air
Sun 12/203:45 pm
DAD
- ONT
2 stops40h 11m
Korean Air
Deal found 7/9![Korean Air logo]()
$1,219
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Sat 8/112:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Sat 8/2210:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 7/13![China Airlines logo]()
$1,056
This Delta deal was found by Cheapflights users on 7/12. 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.
Fri 8/216:20 am
ONT
- DAD
2 stops24h 45m
Delta
Tue 9/110:55 pm
DAD
- ONT
2 stops37h 28m
Delta
Deal found 7/12![Delta logo]()
$1,063
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Sun 7/266:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Sun 8/167:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 7/12![United Airlines logo]()
$1,113
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Tue 8/1112:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/13![China Airlines logo]()
$1,059
This Delta deal was found by Cheapflights users on 7/9. 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.
Thu 10/226:20 am
ONT
- HAN
2 stops25h 15m
Delta
Sat 11/711:05 pm
HAN
- ONT
2 stops39h 41m
Delta
Deal found 7/9![Delta logo]()
$1,078
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Mon 7/276:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Mon 8/177:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 7/12![United Airlines logo]()
$1,113
This China Airlines deal was found by Cheapflights users on 7/9. 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 10/1112:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Mon 11/211:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/9![China Airlines logo]()
$1,074
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated July 14, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated July 14, 2026 and is based on user searches.
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Sat 8/112:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Thu 8/1311:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/13![China Airlines logo]()
$996
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 8/212:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sun 8/1611:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/13![China Airlines logo]()
$975
This oojo deal was found by Cheapflights users on 7/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sun 8/1611:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/14![China Airlines logo]()
$983
This Mytrip deal was found by Cheapflights users on 7/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:45 am
ONT
- DAD
2 stops23h 40m
Multiple Airlines
Sun 8/167:50 am
DAD
- ONT
2 stops24h 50m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$980
This oojo deal was found by Cheapflights users on 7/13. 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 8/811:55 pm
ONT
- SGN
1 stop27h 00m
STARLUX Airlines
Sat 9/511:30 am
SGN
- ONT
1 stop19h 35m
STARLUX Airlines
Deal found 7/13![STARLUX Airlines logo]()
$994
This China Airlines deal was found by Cheapflights users on 7/13. 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 8/1212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/13![China Airlines logo]()
$991
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 am
ONT
- HAN
2 stops38h 35m
Delta
Mon 8/2411:10 pm
HAN
- ONT
2 stops38h 24m
Delta
Deal found 7/10![Delta logo]()
$956
This oojo deal was found by Cheapflights users on 7/11. 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.
Sat 8/2212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Tue 9/15:30 pm
DAD
- ONT
1 stop39h 10m
China Airlines
Deal found 7/11![China Airlines logo]()
$975
This FlightHub deal was found by Cheapflights users on 7/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sun 9/2011:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/12![China Airlines logo]()
$991
This oojo deal was found by Cheapflights users on 7/13. 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 8/2211:55 pm
ONT
- SGN
1 stop27h 00m
STARLUX Airlines
Sat 9/511:30 am
SGN
- ONT
1 stop19h 35m
STARLUX Airlines
Deal found 7/13![STARLUX Airlines logo]()
$996
This China Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 8/2312:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/1610:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 7/13![China Airlines logo]()
$970
This oojo deal was found by Cheapflights users on 7/9. 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 8/2512:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Tue 9/15:30 pm
DAD
- ONT
1 stop39h 10m
China Airlines
Deal found 7/9![China Airlines logo]()
$992
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 July 14, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated July 14, 2026.
This Travelocity deal was found by Cheapflights users on 7/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:02 am
ONT
- SGN
2 stops26h 48m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$445
This Trip.com deal was found by Cheapflights users on 7/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:58 am
ONT
- SGN
2 stops33h 32m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:13 pm
ONT
- SGN
2 stops53h 42m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$462
This oojo deal was found by Cheapflights users on 7/11. 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.
Wed 9/23:07 pm
ONT
- SGN
2 stops33h 18m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$476
This oojo deal was found by Cheapflights users on 7/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:07 pm
ONT
- SGN
2 stops27h 23m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 7/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:58 am
ONT
- SGN
2 stops39h 27m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:58 am
ONT
- SGN
2 stops33h 32m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$484
This oojo deal was found by Cheapflights users on 7/14. 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 oojo 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
Deal found 7/14![China Airlines logo]()
$486
This oojo deal was found by Cheapflights users on 7/10. 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.
Wed 11/117:10 pm
ONT
- SGN
2 stops46h 10m
Philippine Airlines
Deal found 7/10![Philippine Airlines logo]()
$487
This SmartFares deal was found by Cheapflights users on 7/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Deal found 7/14![China Airlines logo]()
$487
This oojo deal was found by Cheapflights users on 7/13. 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 8/1512:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 7/13![China Airlines logo]()
$489
This oojo deal was found by Cheapflights users on 7/14. 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 oojo 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
Deal found 7/14![China Airlines logo]()
$490
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 July 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $931 (Mytrip) |
One-way from | $445 (Travelocity) |
Popular in | December |
Cheapest in | September |
Average price | $1,063 |
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 July 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
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 8/17
6:00 am-10:35 am
2 stops38h 35m
Hanoi Noibai
Mon 8/24
11:10 pm-11:34 pm
2 stops38h 24m
$956
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sun 9/27
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
Mon 10/19
11:30 am-6:00 pm
1 stop20h 30m
$975
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sun 9/13
12:45 am-4:50 pm
1 stop26h 05m
Hanoi Noibai
Tue 9/22
11:30 am-6:00 pm
1 stop20h 30m
$975
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Fri 8/21
12:45 am-10:30 am
1 stop19h 45m
Hanoi Noibai
Sat 9/19
5:50 pm-6:00 pm
1 stop38h 10m
$975
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 10/19
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
Tue 11/3
11:35 am-5:05 pm
1 stop20h 30m
$1,011
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sat 10/17
6:20 am-9:35 pm
2 stops25h 15m
Hanoi Noibai
Sun 11/1
12:20 pm-6:12 pm
2 stops43h 52m
$1,012
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Tue 8/18
6:20 am-9:05 pm
2 stops24h 45m
Da Nang
Tue 9/8
10:55 pm-10:04 pm
2 stops37h 09m
$1,033
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Thu 9/3
6:20 am-9:05 pm
2 stops24h 45m
Da Nang
Wed 9/9
10:55 pm-10:40 pm
2 stops37h 45m
$1,033
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Wed 8/26
6:20 am-9:05 pm
2 stops24h 45m
Da Nang
Wed 9/9
10:55 pm-10:04 pm
2 stops37h 09m
$1,033
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Tue 10/27
11:50 pm-4:30 pm
1 stop26h 40m
Hanoi Noibai
Mon 11/2
11:35 am-5:05 pm
1 stop20h 30m
$1,036
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 December is currently the most expensive (average of $928). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Ontario to Vietnam?
The best time to book flights from Ontario to Vietnam is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Vietnam
Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated July 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.
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Overall
8.8
Crew
9.1
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Overall
8.8
Crew
9.1
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Overall
8.8
Crew
9.1
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Overall
8.8
Crew
9.1
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Overall
8.8
Crew
9.1
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Overall
8.8
Crew
9.1
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 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 July 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 July 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$611 | Average$868 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$656 | Average$755 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$691 | Average$819 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$742 | Average$841 | FlexibilityNo cancel fee | On-timeN/A |