$495+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
jul. 1 — jul. 81
Round-trip
1 adult, Economy
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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 junio 1, 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 junio 1, 2026.
This Gotogate deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mié. 9/3012:10 am
ONT
- SGN
1 stop19h 30m
Multiple Airlines
mar. 12/1511:20 am
SGN
- ONT
1 stop20h 30m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$937
This SmartFares deal was found by Cheapflights users on 5/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/212:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
vie. 11/1311:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 5/27![China Airlines logo]()
$940
This Gotogate deal was found by Cheapflights users on 5/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/412:45 am
ONT
- SGN
1 stop18h 55m
Multiple Airlines
mar. 10/1311:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$941
This Gotogate deal was found by Cheapflights users on 5/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/412:45 am
ONT
- SGN
1 stop18h 55m
Multiple Airlines
jue. 10/811:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$942
This Booking.com deal was found by Cheapflights users on 5/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/1612:10 am
ONT
- SGN
1 stop26h 10m
Multiple Airlines
mar. 10/611:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$943
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
mar. 9/16:00 am
ONT
- SGN
2 stops27h 15m
Delta
mar. 10/67:30 am
SGN
- ONT
2 stops23h 47m
Delta
Deal found 5/28![Delta logo]()
$945
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
dom. 8/912:55 pm
ONT
- SGN
2 stops43h 15m
Delta
dom. 10/1111:45 pm
SGN
- ONT
2 stops36h 58m
Delta
Deal found 6/1![Delta logo]()
$951
This IEagle deal was found by Cheapflights users on 5/27. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/1412:10 am
ONT
- SGN
1 stop26h 10m
Multiple Airlines
vie. 3/1911:20 am
SGN
- ONT
1 stop20h 30m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$952
This SmartFares deal was found by Cheapflights users on 5/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2012:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
sáb. 11/711:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 5/30![China Airlines logo]()
$952
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
lun. 8/176:20 am
ONT
- HAN
2 stops25h 15m
Delta
mié. 9/1611:10 pm
HAN
- ONT
2 stops37h 30m
Delta
Deal found 5/28![Delta logo]()
$956
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
lun. 8/246:20 am
ONT
- HAN
2 stops25h 15m
Delta
dom. 9/2011:10 pm
HAN
- ONT
2 stops37h 30m
Delta
Deal found 5/31![Delta logo]()
$957
This Mytrip deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
sáb. 11/1410:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
lun. 11/3011:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 5/31![China Airlines logo]()
$960
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 junio 1, 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 junio 1, 2026.
This Korean Air deal was found by Cheapflights users on 5/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/246:20 am
ONT
- HAN
2 stops38h 15m
Korean Air
mar. 9/811:10 pm
HAN
- ONT
2 stops37h 30m
Korean Air
Deal found 5/30![Korean Air logo]()
$962
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
sáb. 9/196:20 am
ONT
- SGN
2 stops40h 15m
Delta
lun. 11/1611:50 pm
SGN
- ONT
2 stops32h 27m
Delta
Deal found 5/28![Delta logo]()
$995
This China Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
jue. 11/510:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
lun. 11/1611:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 5/28![China Airlines logo]()
$1,022
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 9/16:00 am
ONT
- SGN
3 stops26h 05m
United Airlines
mar. 10/67:00 am
SGN
- ONT
2 stops22h 22m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,074
This Qatar Airways deal was found by Cheapflights users on 5/30. 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.
mié. 8/196:02 am
ONT
- HAN
2 stops41h 53m
Qatar Airways
jue. 9/177:30 pm
HAN
- ONT
2 stops41h 54m
Qatar Airways
Deal found 5/30![Qatar Airways logo]()
$1,111
This China Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 11/1010:50 pm
ONT
- HAN
2 stops24h 20m
Multiple Airlines
jue. 12/1011:35 am
HAN
- ONT
1 stop20h 15m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,164
This China Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
dom. 8/1612:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
jue. 9/1711:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 5/31![China Airlines logo]()
$1,028
This Delta deal was found by Cheapflights users on 5/27. 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.
jue. 8/66:20 am
ONT
- SGN
2 stops40h 15m
Delta
lun. 9/2811:45 pm
SGN
- ONT
2 stops37h 52m
Delta
Deal found 5/27![Delta logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 5/27. 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.
vie. 11/276:00 am
ONT
- SGN
2 stops27h 15m
United Airlines
vie. 12/117:30 am
SGN
- ONT
2 stops22h 57m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,093
This Korean Air deal was found by Cheapflights users on 5/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/106:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
dom. 8/1611:10 pm
HAN
- ONT
2 stops32h 11m
Korean Air
Deal found 5/30![Korean Air logo]()
$1,102
This China Airlines deal was found by Cheapflights users on 5/30. 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.
lun. 10/2611:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
vie. 11/1311:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 5/30![China Airlines logo]()
$1,028
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
dom. 8/96:01 pm
ONT
- SGN
2 stops38h 09m
Delta
dom. 10/111:55 pm
SGN
- ONT
2 stops41h 22m
Delta
Deal found 5/28![Delta logo]()
$1,039
This Qatar Airways deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 9/812:12 pm
ONT
- HAN
2 stops29h 03m
Qatar Airways
mar. 9/157:30 pm
HAN
- ONT
2 stops37h 33m
Qatar Airways
Deal found 5/31![Qatar Airways logo]()
$1,171
This United Airlines deal was found by Cheapflights users on 5/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/236:00 am
ONT
- SGN
2 stops25h 55m
United Airlines
dom. 11/86:00 am
SGN
- ONT
2 stops24h 27m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,107
This Korean Air deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 7/76:20 am
ONT
- SGN
2 stops40h 15m
Korean Air
jue. 7/167:30 am
SGN
- ONT
2 stops23h 51m
Korean Air
Deal found 5/31![Korean Air logo]()
$1,111
This China Airlines deal was found by Cheapflights users on 5/27. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/1712:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
jue. 10/2211:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 5/27![China Airlines logo]()
$1,028
This Delta deal was found by Cheapflights users on 5/27. 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.
mié. 8/196:00 am
ONT
- DAD
2 stops25h 05m
Delta
dom. 9/63:55 pm
DAD
- ONT
2 stops44h 50m
Delta
Deal found 5/27![Delta logo]()
$1,045
This United Airlines deal was found by Cheapflights users on 5/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/236:00 am
ONT
- SGN
2 stops25h 55m
United Airlines
sáb. 11/76:00 am
SGN
- ONT
2 stops24h 27m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,107
This Korean Air deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
dom. 8/26:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
sáb. 8/221:55 pm
SGN
- ONT
2 stops41h 26m
Korean Air
Deal found 5/31![Korean Air logo]()
$1,113
This China Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
mié. 8/1912:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
mar. 9/155:50 pm
HAN
- ONT
1 stop38h 10m
China Airlines
Deal found 5/28![China Airlines logo]()
$1,028
This Delta deal was found by Cheapflights users on 5/29. 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.
vie. 8/286:00 am
ONT
- DAD
2 stops42h 20m
Delta
mar. 9/2210:55 pm
DAD
- ONT
2 stops38h 42m
Delta
Deal found 5/29![Delta logo]()
$1,096
This United Airlines deal was found by Cheapflights users on 5/27. 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.
dom. 8/309:01 am
ONT
- SGN
2 stops25h 14m
United Airlines
dom. 11/86:00 am
SGN
- ONT
2 stops21h 20m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,110
This China Airlines deal was found by Cheapflights users on 5/30. 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.
mar. 11/1010:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
dom. 12/1311:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 5/30![China Airlines logo]()
$1,080
This United Airlines deal was found by Cheapflights users on 5/27. 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.
mié. 10/219:39 am
ONT
- SGN
2 stops24h 36m
United Airlines
mié. 12/26:00 am
SGN
- ONT
2 stops21h 20m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,110
This Korean Air deal was found by Cheapflights users on 5/27. 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.
vie. 7/106:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
mar. 10/2711:20 pm
DAD
- ONT
2 stops31h 57m
Korean Air
Deal found 5/27![Korean Air logo]()
$1,261
This Ovago deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/152:05 pm
ONT
- THD
3 stops38h 15m
Multiple Airlines
mié. 7/229:20 am
THD
- ONT
3 stops39h 54m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,754
This China Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
dom. 8/1612:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
mar. 9/15:30 pm
DAD
- ONT
1 stop39h 10m
China Airlines
Deal found 5/31![China Airlines logo]()
$1,129
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 11/105:00 am
ONT
- HAN
2 stops27h 05m
United Airlines
mié. 12/912:25 am
HAN
- ONT
2 stops26h 55m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,206
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
sáb. 7/115:10 pm
ONT
- DAD
2 stops37h 55m
Delta
mié. 7/1510:55 pm
DAD
- ONT
2 stops37h 57m
Delta
Deal found 5/28![Delta logo]()
$1,433
This China Airlines deal was found by Cheapflights users on 5/30. 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.
mar. 9/1512:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
jue. 10/15:50 am
HAN
- ONT
2 stops26h 10m
China Airlines
Deal found 5/30![China Airlines logo]()
$1,225
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated junio 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated junio 1, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 5/27. 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.
lun. 6/16:45 am
ONT
- HAN
2 stops24h 50m
Korean Air
lun. 6/812:05 pm
HAN
- ONT
2 stops43h 14m
Korean Air
Deal found 5/27![Korean Air logo]()
$1,230
This Korean Air deal was found by Cheapflights users on 5/27. 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.
lun. 6/16:45 am
ONT
- HAN
2 stops24h 50m
Korean Air
vie. 6/512:05 pm
HAN
- ONT
2 stops43h 00m
Korean Air
Deal found 5/27![Korean Air logo]()
$1,280
This Mytrip deal was found by Cheapflights users on 5/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/26:45 am
ONT
- SGN
3 stops35h 45m
Multiple Airlines
vie. 6/1210:50 am
SGN
- ONT
1 stop21h 10m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,266
This Mytrip deal was found by Cheapflights users on 5/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/26:45 am
ONT
- SGN
3 stops35h 45m
Multiple Airlines
sáb. 6/610:50 am
SGN
- ONT
1 stop21h 10m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,268
This Mytrip deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
mié. 6/31:35 pm
ONT
- SGN
3 stops34h 50m
Multiple Airlines
mar. 6/1610:50 am
SGN
- ONT
1 stop21h 10m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,223
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
mié. 6/36:00 am
ONT
- SGN
2 stops25h 55m
United Airlines
mié. 7/17:00 am
SGN
- ONT
2 stops29h 37m
United Airlines
Deal found 6/1![United Airlines logo]()
$1,344
This Orbitz deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/412:04 pm
ONT
- SGN
2 stops30h 26m
Multiple Airlines
jue. 6/119:55 am
SGN
- ONT
2 stops25h 50m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,263
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
jue. 6/46:45 am
ONT
- HAN
2 stops24h 50m
Delta
mar. 6/2311:10 pm
HAN
- ONT
2 stops32h 09m
Delta
Deal found 5/31![Delta logo]()
$1,308
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
jue. 6/46:45 am
ONT
- SGN
2 stops25h 25m
Delta
mié. 6/2411:45 pm
SGN
- ONT
2 stops31h 34m
Delta
Deal found 5/31![Delta logo]()
$1,325
This Mytrip deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
dom. 6/711:57 am
ONT
- SGN
3 stops30h 33m
Multiple Airlines
mié. 7/85:30 pm
SGN
- ONT
1 stop39h 10m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,348
This Korean Air deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 6/236:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
lun. 7/2011:10 pm
HAN
- ONT
2 stops37h 42m
Korean Air
Deal found 5/31![Korean Air logo]()
$1,313
This Korean Air deal was found by Cheapflights users on 5/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/266:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
lun. 7/2711:10 pm
HAN
- ONT
2 stops32h 11m
Korean Air
Deal found 5/30![Korean Air logo]()
$1,355
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 junio 1, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated junio 1, 2026.
This SmartFares deal was found by Cheapflights users on 5/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/207:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 5/30![Korean Air logo]()
$495
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
mar. 7/216:20 am
ONT
- HAN
2 stops25h 15m
Delta
Deal found 5/31![Delta logo]()
$502
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
mié. 11/116:00 am
ONT
- SGN
2 stops25h 25m
Delta
Deal found 6/1![Delta logo]()
$503
This SmartFares deal was found by Cheapflights users on 5/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/410:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Deal found 5/30![China Airlines logo]()
$504
This Korean Air deal was found by Cheapflights users on 5/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/17:00 am
ONT
- HAN
2 stops23h 45m
Korean Air
Deal found 5/30![Korean Air logo]()
$505
This oojo deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
mar. 9/1512:12 pm
ONT
- SGN
2 stops30h 18m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 5/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/276:20 am
ONT
- HAN
2 stops25h 15m
Delta
Deal found 5/30![Delta logo]()
$507
This Korean Air deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
mar. 9/156:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Deal found 5/28![Korean Air logo]()
$510
This oojo deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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.
lun. 11/96:00 am
ONT
- SGN
2 stops35h 30m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$517
This SmartFares deal was found by Cheapflights users on 5/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/1012:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Deal found 5/27![China Airlines logo]()
$518
This SmartFares deal was found by Cheapflights users on 5/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/410:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Deal found 5/30![China Airlines logo]()
$520
This oojo deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
mié. 11/1110:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Deal found 6/1![China Airlines logo]()
$527
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 junio 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $939 (Gotogate) |
One-way from | $495 (SmartFares) |
Popular in | June |
Cheapest in | September |
Average price | $1,157 |
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 junio 1, 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
lun. 8/24
6:20 am-10:35 am
2 stops38h 15m
Hanoi Noibai
mar. 9/8
11:10 pm-10:40 pm
2 stops37h 30m
$962
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
sáb. 9/19
6:20 am-12:35 pm
2 stops40h 15m
Ho Chi Minh City
lun. 11/16
11:50 pm-5:17 pm
2 stops32h 27m
$995
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
jue. 11/5
10:50 pm-4:30 pm
1 stop26h 40m
Hanoi Noibai
lun. 11/16
11:35 am-4:50 pm
1 stop20h 15m
$1,022
Quickest round-trip
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
dom. 8/16
12:45 am-10:30 am
1 stop19h 45m
Hanoi Noibai
jue. 9/17
11:30 am-6:00 pm
1 stop20h 30m
$1,028
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
lun. 10/26
11:50 pm-10:35 am
1 stop20h 45m
Hanoi Noibai
vie. 11/13
11:35 am-4:50 pm
1 stop20h 15m
$1,028
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
sáb. 10/17
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
jue. 10/22
11:30 am-6:00 pm
1 stop20h 30m
$1,028
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
mié. 8/19
12:45 am-4:50 pm
1 stop26h 05m
Hanoi Noibai
mar. 9/15
5:50 pm-6:00 pm
1 stop38h 10m
$1,028
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
jue. 8/6
6:20 am-12:35 pm
2 stops40h 15m
Ho Chi Minh City
lun. 9/28
11:45 pm-11:37 pm
2 stops37h 52m
$1,033
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
dom. 8/9
6:01 pm-10:10 pm
2 stops38h 09m
Ho Chi Minh City
dom. 10/11
1:55 pm-5:17 pm
2 stops41h 22m
$1,039
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
mié. 8/19
6:00 am-9:05 pm
2 stops25h 05m
Da Nang
dom. 9/6
3:55 pm-10:45 pm
2 stops44h 50m
$1,045
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Vietnam
Have a flexible travel schedule? Discover the best time to fly to Vietnam from Ontario with our price prediction graph.
ONT-HAN
ONT-SGN
ONT-DAD
ONT-THD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Vietnam
ONT-VN0
ONT-HAN
ONT-SGN
ONT-DAD
ONT-THD
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 junio 1, 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.
Boarding
8.9
Crew
9.1
Entertainment
8.8
Food
8.6
Comfort
8.9
Overall
8.9
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Crew
9.1
Entertainment
8.8
Food
8.6
Comfort
8.9
Overall
8.9
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Crew
9.1
Entertainment
8.8
Food
8.6
Comfort
8.9
Overall
8.9
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Crew
9.1
Entertainment
8.8
Food
8.6
Comfort
8.9
Overall
8.9
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Crew
9.1
Entertainment
8.8
Food
8.6
Comfort
8.9
Overall
8.9
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Crew
9.1
Entertainment
8.8
Food
8.6
Comfort
8.9
Overall
8.9
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
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 junio 1, 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 junio 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$640 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$649 | Average$756 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$654 | Average$735 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$691 | Average$812 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$741 | Average$821 | FlexibilityNo cancel fee | On-timeN/A |