$385+ Cheap flights from Ontario (ONT) to Vietnam
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
May 3 — May 101
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Vietnam with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Vietnam
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Cheapest flights from Ontario to VietnamExplore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
Explore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
This Gotogate deal was found by Cheapflights users on 4/1. 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 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
Multiple Airlines
Sat 10/2411:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$743
This Booking.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:45 am
ONT
- SGN
1 stop25h 35m
Multiple Airlines
Tue 9/1511:20 am
SGN
- ONT
1 stop21h 20m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$744
This Booking.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:45 am
ONT
- SGN
1 stop18h 55m
Multiple Airlines
Wed 9/211:20 am
SGN
- ONT
1 stop21h 20m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$751
This CrystalTravel deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Fri 9/2510:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/2![China Airlines logo]()
$754
This oojo deal was found by Cheapflights users on 3/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Tue 9/155:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/31![China Airlines logo]()
$756
This Trip.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Wed 5/131:55 pm
SGN
- ONT
2 stops41h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$760
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
ONT
- HAN
2 stops24h 35m
Delta
Sun 5/1011:10 pm
HAN
- ONT
2 stops32h 00m
Delta
Deal found 3/29![Delta logo]()
$760
This Gotogate deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sat 10/3111:00 am
SGN
- ONT
1 stop20h 50m
China Airlines
Deal found 3/29![China Airlines logo]()
$761
This Gotogate deal was found by Cheapflights users on 3/31. 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.
Wed 9/1612:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Thu 10/810:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/31![China Airlines logo]()
$762
This Gotogate deal was found by Cheapflights users on 3/31. 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.
Wed 9/2312:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Sun 10/1110:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/31![China Airlines logo]()
$763
This Gotogate deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Sun 9/2010:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/30![China Airlines logo]()
$765
This Booking.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Fri 9/2510:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 3/29![China Airlines logo]()
$766
Best flights from Ontario to VietnamDiscover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
Discover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am
ONT
- SGN
2 stops27h 15m
Delta
Thu 9/107:30 am
SGN
- ONT
2 stops29h 10m
Delta
Deal found 3/30![Delta logo]()
$785
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:45 am
ONT
- SGN
2 stops39h 50m
Korean Air
Sun 5/171:55 pm
SGN
- ONT
2 stops41h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$791
This China Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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
- SGN
1 stop19h 30m
China Airlines
Thu 10/110:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/2![China Airlines logo]()
$821
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:00 am
ONT
- SGN
2 stops23h 55m
United Airlines
Fri 9/117:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 3/30![United Airlines logo]()
$890
This EVA Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:59 pm
ONT
- DAD
2 stops25h 36m
Multiple Airlines
Tue 5/2612:55 pm
DAD
- ONT
2 stops37h 17m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,125
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:00 am
ONT
- SGN
2 stops25h 10m
Delta
Sun 9/2011:45 pm
SGN
- ONT
2 stops36h 55m
Delta
Deal found 3/30![Delta logo]()
$785
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:45 am
ONT
- SGN
2 stops26h 30m
Korean Air
Thu 5/217:30 am
SGN
- ONT
2 stops23h 40m
Korean Air
Deal found 3/29![Korean Air logo]()
$791
This China Airlines deal was found by Cheapflights users on 4/1. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Thu 9/1011:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/1![China Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:00 am
ONT
- SGN
2 stops23h 55m
United Airlines
Sun 11/86:00 am
SGN
- ONT
2 stops21h 20m
United Airlines
Deal found 3/29![United Airlines logo]()
$890
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
ONT
- SGN
2 stops25h 10m
Delta
Thu 9/247:30 am
SGN
- ONT
2 stops30h 14m
Delta
Deal found 3/30![Delta logo]()
$820
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- DAD
2 stops41h 20m
Korean Air
Mon 5/1810:55 pm
DAD
- ONT
2 stops32h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$891
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 8/258:00 am
ONT
- SGN
2 stops23h 55m
United Airlines
Thu 9/247:00 am
SGN
- ONT
2 stops19h 20m
United Airlines
Deal found 4/2![United Airlines logo]()
$910
This China Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:10 am
ONT
- HAN
1 stop20h 25m
China Airlines
Thu 5/711:35 am
HAN
- ONT
1 stop20h 25m
China Airlines
Deal found 3/29![China Airlines logo]()
$956
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
ONT
- HAN
2 stops24h 35m
Delta
Wed 5/611:10 pm
HAN
- ONT
2 stops32h 00m
Delta
Deal found 3/29![Delta logo]()
$885
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 9/88:00 am
ONT
- HAN
2 stops24h 15m
United Airlines
Thu 9/1011:35 pm
HAN
- ONT
2 stops32h 36m
United Airlines
Deal found 4/2![United Airlines logo]()
$921
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 8/166:00 am
ONT
- SGN
2 stops40h 35m
Delta
Sun 9/207:30 am
SGN
- ONT
2 stops39h 31m
Delta
Deal found 4/2![Delta logo]()
$891
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Wed 9/98:00 am
ONT
- SGN
2 stops26h 15m
United Airlines
Wed 9/237:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 3/31![United Airlines logo]()
$934
This Korean Air deal was found by Cheapflights users on 4/1. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
ONT
- DAD
2 stops24h 05m
Korean Air
Mon 5/1810:55 pm
DAD
- ONT
2 stops32h 15m
Korean Air
Deal found 4/1![Korean Air logo]()
$1,031
This China Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:10 am
ONT
- DAD
2 stops40h 55m
China Airlines
Mon 9/215:30 pm
DAD
- ONT
1 stop38h 30m
China Airlines
Deal found 3/29![China Airlines logo]()
$1,038
This China Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Mon 9/216:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 3/30![China Airlines logo]()
$1,039
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:00 am
ONT
- SGN
2 stops23h 55m
United Airlines
Wed 9/307:00 am
SGN
- ONT
2 stops24h 18m
United Airlines
Deal found 3/29![United Airlines logo]()
$954
This China Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Sat 10/36:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 3/29![China Airlines logo]()
$1,057
This EVA Air deal was found by Cheapflights users on 4/1. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/301:30 pm
ONT
- DAD
2 stops32h 05m
Multiple Airlines
Thu 5/712:55 pm
DAD
- ONT
2 stops37h 27m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$1,551
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 8/46:20 am
ONT
- HAN
2 stops25h 15m
Delta
Fri 8/2811:10 pm
HAN
- ONT
2 stops38h 34m
Delta
Deal found 4/1![Delta logo]()
$1,100
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/111:30 pm
ONT
- HAN
2 stops43h 05m
United Airlines
Wed 6/311:35 pm
HAN
- ONT
2 stops37h 02m
United Airlines
Deal found 4/2![United Airlines logo]()
$1,093
This EVA Air deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/109:20 pm
ONT
- DAD
2 stops24h 15m
Multiple Airlines
Thu 8/2012:55 pm
DAD
- ONT
2 stops37h 17m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$1,646
This China Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Tue 5/266:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 3/30![China Airlines logo]()
$1,219
This Qatar Airways deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:39 am
ONT
- DAD
3 stops36h 51m
Multiple Airlines
Mon 5/182:50 pm
DAD
- ONT
3 stops41h 57m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,693
This China Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 4/2912:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Sat 5/306:00 am
HAN
- ONT
2 stops26h 00m
China Airlines
Deal found 4/2![China Airlines logo]()
$1,306
This China Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 7/212:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Tue 7/75:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 4/2![China Airlines logo]()
$1,311
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated April 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated April 3, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/31. 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.
Mon 4/1311:53 am
ONT
- SGN
2 stops45h 22m
Delta
Sat 5/21:55 pm
SGN
- ONT
2 stops47h 49m
Delta
Deal found 3/31![Delta logo]()
$792
This Delta deal was found by Cheapflights users on 3/31. 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.
Sat 4/185:59 pm
ONT
- SGN
2 stops38h 11m
Delta
Tue 5/197:30 am
SGN
- ONT
2 stops29h 04m
Delta
Deal found 3/31![Delta logo]()
$791
This Korean Air deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Mon 5/1111:10 pm
HAN
- ONT
2 stops32h 00m
Korean Air
Deal found 3/29![Korean Air logo]()
$766
This FlightHub deal was found by Cheapflights users on 3/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Sun 5/175:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/31![China Airlines logo]()
$782
This Trip.com deal was found by Cheapflights users on 4/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Thu 5/215:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/1![China Airlines logo]()
$795
This oojo deal was found by Cheapflights users on 4/1. 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.
Sat 4/2512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sun 5/175:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/1![China Airlines logo]()
$756
This oojo deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Sun 6/75:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 3/29![China Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
ONT
- HAN
2 stops24h 35m
Delta
Sun 5/1011:10 pm
HAN
- ONT
2 stops32h 00m
Delta
Deal found 3/29![Delta logo]()
$760
This oojo deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Thu 10/295:50 pm
SGN
- ONT
1 stop38h 00m
China Airlines
Deal found 3/30![China Airlines logo]()
$752
This Trip.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Wed 5/131:55 pm
SGN
- ONT
2 stops41h 15m
Korean Air
Deal found 3/29![Korean Air logo]()
$760
This oojo deal was found by Cheapflights users on 4/1. 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.
Tue 4/2812:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Sun 6/75:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/1![China Airlines logo]()
$787
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- SGN
2 stops25h 10m
Delta
Wed 6/107:30 am
SGN
- ONT
2 stops23h 49m
Delta
Deal found 3/30![Delta logo]()
$785
One-way flights from Ontario to VietnamSearch for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
This ScholarTrip deal was found by Cheapflights users on 3/31. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 3/31![Korean Air logo]()
$385
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:00 am
ONT
- HAN
2 stops24h 35m
Delta
Deal found 3/29![Delta logo]()
$387
This Korean Air deal was found by Cheapflights users on 3/30. 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.
Wed 4/157:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 3/30![Korean Air logo]()
$390
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 4/106:00 am
ONT
- HAN
2 stops26h 35m
United Airlines
Deal found 3/31![United Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 4/96:49 pm
ONT
- HAN
2 stops37h 46m
United Airlines
Deal found 3/31![United Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 3/31. 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.
Thu 4/96:00 am
ONT
- SGN
2 stops27h 15m
Delta
Deal found 3/31![Delta logo]()
$408
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 4/246:00 am
ONT
- SGN
3 stops26h 05m
United Airlines
Deal found 4/1![United Airlines logo]()
$410
This Korean Air deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Deal found 3/30![Korean Air logo]()
$411
This Korean Air deal was found by Cheapflights users on 3/31. 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.
Wed 5/67:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 3/31![Korean Air logo]()
$411
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 4/106:00 am
ONT
- SGN
2 stops28h 15m
United Airlines
Deal found 3/31![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 4/1711:05 am
ONT
- SGN
2 stops45h 00m
United Airlines
Deal found 3/31![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Wed 4/81:27 pm
ONT
- SGN
2 stops42h 28m
United Airlines
Deal found 3/31![United Airlines logo]()
$422
Find flight deals from Ontario to Vietnam
Keep the following information in mind while searching for Ontario to Vietnam flight deals. Data was last updated April 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $751 (Booking.com) |
One-way from | $385 (ScholarTrip) |
Popular in | June |
Cheapest in | September |
Average price | $760 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Vietnam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
Use the filters below to find and compare flights from Ontario to Vietnam that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Thu 9/3
6:00 am-11:15 pm
2 stops27h 15m
Ho Chi Minh City
Thu 9/10
7:30 am-10:40 pm
2 stops29h 10m
$785
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Thu 8/20
7:00 am-10:10 pm
2 stops25h 10m
Ho Chi Minh City
Sun 9/20
11:45 pm-10:40 pm
2 stops36h 55m
$785
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 5/11
6:45 am-12:35 pm
2 stops39h 50m
Ho Chi Minh City
Sun 5/17
1:55 pm-5:10 pm
2 stops41h 15m
$791
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 5/11
6:45 am-11:15 pm
2 stops26h 30m
Ho Chi Minh City
Thu 5/21
7:30 am-5:10 pm
2 stops23h 40m
$791
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Wed 8/19
7:00 am-10:10 pm
2 stops25h 10m
Ho Chi Minh City
Thu 9/24
7:30 am-11:44 pm
2 stops30h 14m
$820
Quickest round-trip
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 9/27
12:10 am-9:40 am
1 stop19h 30m
Ho Chi Minh City
Thu 10/1
10:50 am-6:00 pm
1 stop21h 10m
$821
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 9/7
12:45 am-10:30 am
1 stop19h 45m
Hanoi Noibai
Thu 9/10
11:30 am-6:40 pm
1 stop21h 10m
$846
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Tue 4/21
7:00 am-9:35 pm
2 stops24h 35m
Hanoi Noibai
Wed 5/6
11:10 pm-5:10 pm
2 stops32h 00m
$885
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Wed 8/12
8:00 am-9:55 pm
2 stops23h 55m
Ho Chi Minh City
Fri 9/11
7:00 am-6:11 pm
2 stops25h 11m
$890
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 8/30
8:00 am-9:55 pm
2 stops23h 55m
Ho Chi Minh City
Sun 11/8
6:00 am-12:20 pm
2 stops21h 20m
$890
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Vietnam
Have a flexible travel schedule? Discover the best time to fly to Vietnam from Ontario with our price prediction graph.
ONT-HAN
ONT-SGN
ONT-DAD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Vietnam
ONT-VN0
ONT-HAN
ONT-SGN
ONT-DAD
What is the cheapest month to book a flight from Ontario to Vietnam?
Currently, April is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $304). Flying from Ontario to Vietnam in June is currently the most expensive (average of $636). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Vietnam
Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated April 3, 2026.
See what other customers who have flown with STARLUX Airlines,Korean Air, andChina Airlines from Ontario to Vietnam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
8.8
Food
8.7
Overall
8.9
Boarding
9.0
Crew
9.2
Comfort
8.9
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
8.9
Boarding
9.0
Crew
9.2
Comfort
8.9
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
8.9
Boarding
9.0
Crew
9.2
Comfort
8.9
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
8.9
Boarding
9.0
Crew
9.2
Comfort
8.9
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
8.9
Boarding
9.0
Crew
9.2
Comfort
8.9
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Entertainment
8.8
Food
8.7
Overall
8.9
Boarding
9.0
Crew
9.2
Comfort
8.9
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Vietnam
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Vietnam by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Vietnam by cabin class
Find flights from Ontario to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Vietnam flights
Browse other Ontario and Vietnam flight options. Last updated on April 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Vietnam flights
Consider these flights traveling from Ontario to Vietnam.
Fly to Vietnam regions
Consider these flights traveling to Vietnam regions.
Top 5 airlines flying from Ontario to Vietnam
Discover the top 5 airlines that operate flights from Ontario to Vietnam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$649 | Average$772 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$654 | Average$661 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$697 | Average$832 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$742 | Average$812 | FlexibilityNo cancel fee | On-timeN/A |