$471+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Jul 11 — Jul 181
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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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 June 11, 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 June 11, 2026.
This Booking.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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.
Tue 9/2212:10 am
ONT
- SGN
1 stop26h 10m
Multiple Airlines
Tue 10/1311:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$942
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
ONT
- SGN
2 stops40h 35m
Delta
Wed 9/3011:45 pm
SGN
- ONT
2 stops36h 55m
Delta
Deal found 6/7![Delta logo]()
$945
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/305:05 pm
ONT
- SGN
2 stops39h 05m
Delta
Mon 9/2111:45 pm
SGN
- ONT
2 stops36h 55m
Delta
Deal found 6/6![Delta logo]()
$951
This Gotogate deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Wed 11/1810:50 pm
ONT
- SGN
1 stop27h 00m
China Airlines
Sat 11/2811:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 6/7![China Airlines logo]()
$955
This Delta deal was found by Cheapflights users on 6/10. 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 9/216:20 am
ONT
- HAN
2 stops25h 15m
Delta
Tue 10/611:10 pm
HAN
- ONT
2 stops32h 07m
Delta
Deal found 6/10![Delta logo]()
$956
This Gotogate deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 10/112:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Wed 11/1811:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 6/7![China Airlines logo]()
$957
This Gotogate deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/612:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Tue 10/65:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 6/6![China Airlines logo]()
$961
This Gotogate deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Wed 11/1810:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Mon 11/305:50 pm
SGN
- ONT
1 stop38h 00m
China Airlines
Deal found 6/7![China Airlines logo]()
$962
This Korean Air deal was found by Cheapflights users on 6/10. 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.
Thu 9/246:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Mon 10/511:10 pm
HAN
- ONT
2 stops32h 07m
Korean Air
Deal found 6/10![Korean Air logo]()
$962
This Gotogate deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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.
Fri 8/1412:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Sat 8/2910:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 6/8![China Airlines logo]()
$965
This Gotogate deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/212:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Mon 8/3110:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 6/6![China Airlines logo]()
$967
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Wed 8/1910:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 6/10![China Airlines logo]()
$969
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 June 11, 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 June 11, 2026.
This Korean Air deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 10/267:00 am
ONT
- HAN
2 stops24h 45m
Korean Air
Tue 11/1711:05 pm
HAN
- ONT
2 stops33h 12m
Korean Air
Deal found 6/7![Korean Air logo]()
$962
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 am
ONT
- SGN
2 stops25h 10m
Delta
Mon 11/2311:50 pm
SGN
- ONT
2 stops32h 27m
Delta
Deal found 6/9![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 11/110:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Wed 11/411:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 6/10![China Airlines logo]()
$1,014
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 11/56:00 am
ONT
- SGN
2 stops27h 15m
United Airlines
Thu 11/197:30 am
SGN
- ONT
2 stops19h 50m
United Airlines
Deal found 6/7![United Airlines logo]()
$1,056
This KAYAK deal was found by Cheapflights users on 6/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:07 pm
ONT
- DAD
2 stops27h 53m
Multiple Airlines
Wed 9/910:00 am
DAD
- ONT
1 stop22h 40m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,091
This STARLUX Airlines deal was found by Cheapflights users on 6/9. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2411:55 pm
ONT
- DAD
1 stop27h 40m
STARLUX Airlines
Fri 7/316:45 pm
DAD
- ONT
1 stop36h 55m
STARLUX Airlines
Deal found 6/9![STARLUX Airlines logo]()
$1,791
This Korean Air deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 10/297:00 am
ONT
- HAN
2 stops24h 45m
Korean Air
Tue 11/1711:05 pm
HAN
- ONT
2 stops33h 12m
Korean Air
Deal found 6/7![Korean Air logo]()
$962
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:00 am
ONT
- SGN
2 stops25h 25m
Delta
Sat 12/128:00 am
SGN
- ONT
2 stops30h 48m
Delta
Deal found 6/9![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/2812:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Sun 9/205:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 6/6![China Airlines logo]()
$1,014
This Korean Air deal was found by Cheapflights users on 6/9. 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.
Thu 11/127:00 am
ONT
- HAN
2 stops23h 45m
Korean Air
Mon 11/1611:05 pm
HAN
- ONT
2 stops33h 12m
Korean Air
Deal found 6/9![Korean Air logo]()
$962
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 10/138:00 am
ONT
- SGN
2 stops24h 05m
United Airlines
Tue 11/37:30 am
SGN
- ONT
2 stops25h 17m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,062
This Delta deal was found by Cheapflights users on 6/10. 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.
Thu 10/16:20 am
ONT
- SGN
2 stops25h 50m
Delta
Thu 10/1511:45 pm
SGN
- ONT
2 stops36h 58m
Delta
Deal found 6/10![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 8/2712:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Sat 9/2610:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 6/10![China Airlines logo]()
$1,014
This China Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 11/1710:50 pm
ONT
- HAN
2 stops24h 20m
Multiple Airlines
Mon 11/3011:35 am
HAN
- ONT
1 stop20h 15m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,159
This Korean Air deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 10/267:00 am
ONT
- HAN
2 stops24h 45m
Korean Air
Mon 11/1611:05 pm
HAN
- ONT
2 stops33h 12m
Korean Air
Deal found 6/7![Korean Air logo]()
$962
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/96:00 am
ONT
- HAN
2 stops26h 15m
United Airlines
Thu 7/1611:35 pm
HAN
- ONT
2 stops50h 37m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,106
This Delta deal was found by Cheapflights users on 6/10. 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 8/106:00 am
ONT
- SGN
2 stops40h 35m
Delta
Tue 10/137:30 am
SGN
- ONT
2 stops23h 47m
Delta
Deal found 6/10![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 10/2911:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Fri 11/2011:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 6/7![China Airlines logo]()
$1,028
This China Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:50 pm
ONT
- HAN
2 stops24h 20m
Multiple Airlines
Mon 11/211:35 am
HAN
- ONT
1 stop20h 15m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,159
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 8/96:20 am
ONT
- SGN
2 stops25h 50m
Delta
Sat 10/107:30 am
SGN
- ONT
2 stops29h 13m
Delta
Deal found 6/7![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/612:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Tue 8/185:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 6/7![China Airlines logo]()
$1,028
This Korean Air deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Thu 9/1710:55 pm
DAD
- ONT
2 stops32h 25m
Korean Air
Deal found 6/7![Korean Air logo]()
$1,116
This China Airlines deal was found by Cheapflights users on 6/9. 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.
Thu 8/612:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sat 8/225:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 6/9![China Airlines logo]()
$1,028
This Delta deal was found by Cheapflights users on 6/9. 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 8/266:00 am
ONT
- DAD
2 stops25h 05m
Delta
Sun 9/1310:55 pm
DAD
- ONT
2 stops37h 45m
Delta
Deal found 6/9![Delta logo]()
$1,045
This Korean Air deal was found by Cheapflights users on 6/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:20 am
ONT
- DAD
2 stops24h 45m
Multiple Airlines
Sun 7/1210:55 pm
DAD
- ONT
2 stops32h 26m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,310
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 8/266:20 am
ONT
- DAD
2 stops42h 00m
Delta
Wed 9/93:55 pm
DAD
- ONT
2 stops44h 49m
Delta
Deal found 6/10![Delta logo]()
$1,045
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 stops42h 00m
Delta
Tue 9/810:55 pm
DAD
- ONT
2 stops37h 49m
Delta
Deal found 6/7![Delta logo]()
$1,045
This China Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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
- DAD
2 stops40h 30m
China Airlines
Thu 9/1710:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 6/7![China Airlines logo]()
$1,208
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:20 am
ONT
- DAD
2 stops42h 00m
Delta
Tue 9/83:55 pm
DAD
- ONT
2 stops44h 45m
Delta
Deal found 6/9![Delta logo]()
$1,078
This China Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/3012:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Wed 9/25:50 am
HAN
- ONT
2 stops26h 50m
China Airlines
Deal found 6/8![China Airlines logo]()
$1,208
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated June 11, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Mon 6/2212:10 am
ONT
- DAD
2 stops29h 40m
Multiple Airlines
Wed 7/87:10 am
DAD
- ONT
2 stops25h 30m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$995
This ScholarTrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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.
Mon 7/66:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
Mon 7/207:30 am
SGN
- ONT
2 stops29h 22m
Korean Air
Deal found 6/8![Korean Air logo]()
$1,077
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/96:00 am
ONT
- HAN
2 stops26h 15m
United Airlines
Thu 7/1611:35 pm
HAN
- ONT
2 stops50h 37m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,106
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/121:00 pm
ONT
- SGN
2 stops44h 15m
Delta
Tue 7/287:30 am
SGN
- ONT
2 stops41h 47m
Delta
Deal found 6/8![Delta logo]()
$1,119
This Korean Air deal was found by Cheapflights users on 6/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
Sun 8/211:45 pm
SGN
- ONT
2 stops37h 00m
Korean Air
Deal found 6/11![Korean Air logo]()
$1,111
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/156:20 am
ONT
- SGN
2 stops26h 55m
Delta
Mon 7/271:55 pm
SGN
- ONT
2 stops59h 22m
Delta
Deal found 6/8![Delta logo]()
$1,113
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/156:00 am
ONT
- SGN
2 stops28h 15m
United Airlines
Tue 9/1511:15 pm
SGN
- ONT
2 stops34h 46m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,143
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 7/156:20 am
ONT
- SGN
2 stops26h 55m
Delta
Sun 8/21:55 pm
SGN
- ONT
2 stops41h 26m
Delta
Deal found 6/10![Delta logo]()
$1,155
This ScholarTrip deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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.
Mon 7/206:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
Mon 7/271:55 pm
SGN
- ONT
2 stops41h 26m
Korean Air
Deal found 6/8![Korean Air logo]()
$1,104
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/226:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Tue 9/157:00 am
SGN
- ONT
2 stops21h 01m
United Airlines
Deal found 6/7![United Airlines logo]()
$1,150
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/256:00 am
ONT
- SGN
2 stops28h 15m
United Airlines
Tue 9/111:15 pm
SGN
- ONT
2 stops34h 46m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,159
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/316:01 pm
ONT
- SGN
2 stops38h 09m
Delta
Mon 8/1711:45 pm
SGN
- ONT
2 stops37h 00m
Delta
Deal found 6/8![Delta logo]()
$1,067
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 June 11, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This SmartFares deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Thu 10/16:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Deal found 6/7![Korean Air logo]()
$471
This SmartFares deal was found by Cheapflights users on 6/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Deal found 6/9![Korean Air logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Mon 8/108:58 am
ONT
- SGN
2 stops39h 27m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$498
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Wed 8/58:58 am
ONT
- SGN
2 stops51h 37m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$501
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/136:00 am
ONT
- SGN
2 stops26h 10m
Delta
Deal found 6/8![Delta logo]()
$503
This ScholarTrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:00 am
ONT
- HAN
2 stops37h 10m
Korean Air
Deal found 6/11![Korean Air logo]()
$504
This SmartFares deal was found by Cheapflights users on 6/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 6/10![China Airlines logo]()
$505
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 8/46:00 am
ONT
- HAN
2 stops38h 35m
Delta
Deal found 6/7![Delta logo]()
$507
This Korean Air deal was found by Cheapflights users on 6/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:00 am
ONT
- HAN
2 stops23h 45m
Korean Air
Deal found 6/11![Korean Air logo]()
$510
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 8/166:01 pm
ONT
- SGN
2 stops38h 09m
Delta
Deal found 6/7![Delta logo]()
$514
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 8/125:05 pm
ONT
- SGN
2 stops40h 10m
Delta
Deal found 6/7![Delta logo]()
$515
This oojo deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/186:02 am
ONT
- SGN
2 stops25h 43m
Japan Airlines
Deal found 6/8![Japan Airlines logo]()
$517
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $942 (Booking.com) |
One-way from | $471 (SmartFares) |
Popular in | December |
Cheapest in | September |
Average price | $1,128 |
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 June 11, 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 10/26
7:00 am-9:45 pm
2 stops24h 45m
Hanoi Noibai
Tue 11/17
11:05 pm-5:17 pm
2 stops33h 12m
$962
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Thu 10/29
7:00 am-9:45 pm
2 stops24h 45m
Hanoi Noibai
Tue 11/17
11:05 pm-5:17 pm
2 stops33h 12m
$962
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Thu 11/12
7:00 am-9:45 pm
2 stops23h 45m
Hanoi Noibai
Mon 11/16
11:05 pm-5:17 pm
2 stops33h 12m
$962
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 10/26
7:00 am-9:45 pm
2 stops24h 45m
Hanoi Noibai
Mon 11/16
11:05 pm-5:17 pm
2 stops33h 12m
$962
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Tue 10/13
7:00 am-10:10 pm
2 stops25h 10m
Ho Chi Minh City
Mon 11/23
11:50 pm-5:17 pm
2 stops32h 27m
$1,010
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 11/16
6:00 am-10:25 pm
2 stops25h 25m
Ho Chi Minh City
Sat 12/12
8:00 am-11:48 pm
2 stops30h 48m
$1,010
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Thu 10/1
6:20 am-10:10 pm
2 stops25h 50m
Ho Chi Minh City
Thu 10/15
11:45 pm-10:43 pm
2 stops36h 58m
$1,010
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 8/10
6:00 am-12:35 pm
2 stops40h 35m
Ho Chi Minh City
Tue 10/13
7:30 am-5:17 pm
2 stops23h 47m
$1,010
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 8/9
6:20 am-10:10 pm
2 stops25h 50m
Ho Chi Minh City
Sat 10/10
7:30 am-10:43 pm
2 stops29h 13m
$1,010
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 11/1
10:50 pm-10:00 am
1 stop20h 10m
Ho Chi Minh City
Wed 11/4
11:00 am-4:50 pm
1 stop20h 50m
$1,014
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 June 11, 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.
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - 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 June 11, 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$611 | Average$756 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$640 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$654 | Average$735 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$691 | Average$813 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$742 | Average$827 | FlexibilityNo cancel fee | On-timeN/A |