$411+ Cheap flights from Ontario (ONT) to Vietnam
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Aug 25 — Sep 11
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 July 26, 2026.
Explore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/25![China Airlines logo]()
$820
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/910:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/25![China Airlines logo]()
$823
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Wed 9/911:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$828
This Kissandfly.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Thu 8/1311:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$834
This SmartFares deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Sun 12/611:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/25![China Airlines logo]()
$841
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1510:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Wed 11/2511:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/24![China Airlines logo]()
$845
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:10 am
ONT
- DAD
1 stop26h 20m
China Airlines
Tue 9/225:30 pm
DAD
- ONT
1 stop38h 30m
China Airlines
Deal found 7/25![China Airlines logo]()
$848
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Fri 10/3011:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/25![China Airlines logo]()
$853
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:10 am
ONT
- DAD
1 stop26h 20m
China Airlines
Thu 10/2210:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 7/25![China Airlines logo]()
$866
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Sun 11/1511:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/25![China Airlines logo]()
$871
This Justfly.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Wed 11/2511:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/25![China Airlines logo]()
$873
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Thu 8/1311:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/25![China Airlines logo]()
$877
Best flights from Ontario to VietnamDiscover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 26, 2026.
Discover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 26, 2026.
This China Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Mon 12/711:35 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/25![China Airlines logo]()
$913
This Korean Air deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Mon 10/263:45 pm
DAD
- ONT
2 stops39h 27m
Korean Air
Deal found 7/24![Korean Air logo]()
$958
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 9/56:20 am
ONT
- SGN
2 stops26h 55m
Delta
Sun 9/207:30 am
SGN
- ONT
2 stops29h 10m
Delta
Deal found 7/24![Delta logo]()
$993
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
ONT
- SGN
2 stops28h 15m
United Airlines
Sat 8/297:00 am
SGN
- ONT
2 stops22h 41m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,063
This Qatar Airways deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:02 am
ONT
- HAN
2 stops34h 53m
Qatar Airways
Mon 11/167:10 pm
HAN
- ONT
2 stops42h 44m
Qatar Airways
Deal found 7/21![Qatar Airways logo]()
$1,111
This China Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Thu 10/225:50 pm
HAN
- ONT
1 stop38h 10m
China Airlines
Deal found 7/25![China Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 10/266:00 am
ONT
- HAN
2 stops25h 45m
Delta
Sun 11/1511:05 pm
HAN
- ONT
2 stops32h 07m
Delta
Deal found 7/21![Delta logo]()
$1,007
This Korean Air deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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.
Fri 8/216:20 am
ONT
- SGN
2 stops26h 55m
Korean Air
Sun 9/131:55 pm
SGN
- ONT
2 stops41h 24m
Korean Air
Deal found 7/21![Korean Air logo]()
$1,019
This China Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Thu 11/1211:00 am
SGN
- ONT
1 stop21h 05m
China Airlines
Deal found 7/21![China Airlines logo]()
$997
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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
- HAN
2 stops26h 05m
United Airlines
Sun 11/1512:25 am
HAN
- ONT
2 stops27h 04m
United Airlines
Deal found 7/24![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am
ONT
- HAN
2 stops25h 35m
Delta
Sat 9/511:10 pm
HAN
- ONT
2 stops37h 13m
Delta
Deal found 7/25![Delta logo]()
$1,007
This Qatar Airways deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/912:12 pm
ONT
- HAN
2 stops29h 03m
Qatar Airways
Tue 9/227:30 pm
HAN
- ONT
2 stops37h 33m
Qatar Airways
Deal found 7/23![Qatar Airways logo]()
$1,111
This Korean Air deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:20 am
ONT
- HAN
2 stops38h 15m
Korean Air
Thu 10/2212:05 pm
HAN
- ONT
2 stops43h 07m
Korean Air
Deal found 7/25![Korean Air logo]()
$1,062
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:25 am
ONT
- SGN
2 stops22h 30m
United Airlines
Mon 12/287:30 am
SGN
- ONT
2 stops22h 51m
United Airlines
Deal found 7/25![United Airlines logo]()
$1,104
This China Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 9/912:45 am
ONT
- SGN
2 stops40h 35m
China Airlines
Mon 9/1410:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 7/24![China Airlines logo]()
$1,011
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 10/196:20 am
ONT
- DAD
2 stops24h 45m
Delta
Fri 10/303:45 pm
DAD
- ONT
2 stops44h 17m
Delta
Deal found 7/24![Delta logo]()
$1,073
This Korean Air deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/36:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Sun 9/2010:55 pm
DAD
- ONT
2 stops37h 45m
Korean Air
Deal found 7/22![Korean Air logo]()
$1,089
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 10/266:00 am
ONT
- SGN
2 stops25h 50m
United Airlines
Tue 11/36:00 am
SGN
- ONT
2 stops21h 01m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,108
This China Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/412:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Fri 10/910:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/22![China Airlines logo]()
$1,025
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/26:20 am
ONT
- DAD
2 stops24h 45m
Delta
Tue 9/2210:55 pm
DAD
- ONT
2 stops38h 52m
Delta
Deal found 7/22![Delta logo]()
$1,084
This Korean Air deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Tue 9/110:55 pm
DAD
- ONT
2 stops32h 26m
Korean Air
Deal found 7/26![Korean Air logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/66:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Wed 8/197:00 am
SGN
- ONT
2 stops25h 16m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,113
This China Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sat 9/1910:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 7/22![China Airlines logo]()
$1,025
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:20 am
ONT
- DAD
2 stops24h 45m
Delta
Mon 9/2110:55 pm
DAD
- ONT
2 stops37h 45m
Delta
Deal found 7/22![Delta logo]()
$1,084
This Korean Air deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:04 am
ONT
- SGN
2 stops25h 16m
Korean Air
Mon 12/288:00 am
SGN
- ONT
2 stops23h 56m
Korean Air
Deal found 7/25![Korean Air logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 1/16:00 am
ONT
- SGN
2 stops27h 15m
United Airlines
Fri 1/156:00 am
SGN
- ONT
2 stops21h 20m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,113
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 am
ONT
- HAN
1 stop26h 40m
China Airlines
Fri 10/307:00 pm
HAN
- ONT
2 stops37h 05m
China Airlines
Deal found 7/25![China Airlines logo]()
$1,037
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:20 am
ONT
- DAD
2 stops24h 45m
Delta
Sun 9/1310:55 pm
DAD
- ONT
2 stops38h 52m
Delta
Deal found 7/21![Delta logo]()
$1,084
This China Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Wed 3/176:55 pm
SGN
- ONT
2 stops37h 10m
China Airlines
Deal found 7/25![China Airlines logo]()
$1,086
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 11/56:20 am
ONT
- DAD
2 stops40h 55m
Delta
Tue 11/243:45 pm
DAD
- ONT
2 stops39h 27m
Delta
Deal found 7/21![Delta logo]()
$1,161
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated July 26, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated July 26, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sun 8/1611:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$880
This China Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Tue 8/1811:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$895
This China Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Thu 8/1311:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$921
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Thu 8/1311:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/25![China Airlines logo]()
$877
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Tue 9/2911:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 7/24![China Airlines logo]()
$828
This Kissandfly.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Thu 8/1311:30 am
HAN
- ONT
1 stop21h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$834
This China Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/1312:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sat 8/225:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 7/24![China Airlines logo]()
$889
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/1812:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/24![China Airlines logo]()
$885
This CheapOair deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Tue 9/15:30 pm
DAD
- ONT
1 stop39h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$906
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/25![China Airlines logo]()
$820
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/910:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/25![China Airlines logo]()
$823
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:45 am
ONT
- HAN
1 stop19h 45m
China Airlines
Sat 9/55:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 7/25![China Airlines logo]()
$890
One-way flights from Ontario to VietnamSearch for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
This SmartFares deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/2612:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Deal found 7/24![China Airlines logo]()
$411
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Deal found 7/24![China Airlines logo]()
$414
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 7/25![China Airlines logo]()
$415
This CheapOair deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:50 pm
ONT
- SGN
1 stop26h 25m
China Airlines
Deal found 7/24![China Airlines logo]()
$417
This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:50 pm
ONT
- SGN
1 stop26h 25m
China Airlines
Deal found 7/25![China Airlines logo]()
$421
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:45 am
ONT
- SGN
1 stop18h 55m
China Airlines
Deal found 7/25![China Airlines logo]()
$423
This Mytrip deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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.
Wed 8/1912:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 7/23![China Airlines logo]()
$424
This Booking.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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.
Sun 9/612:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Deal found 7/23![China Airlines logo]()
$427
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 9/2912:10 am
ONT
- DAD
1 stop18h 50m
China Airlines
Deal found 7/24![China Airlines logo]()
$429
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Deal found 7/25![China Airlines logo]()
$429
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Deal found 7/25![China Airlines logo]()
$430
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:50 pm
ONT
- DAD
1 stop26h 35m
China Airlines
Deal found 7/25![China Airlines logo]()
$431
Find flight deals from Ontario to Vietnam
Keep the following information in mind while searching for Ontario to Vietnam flight deals. Data was last updated July 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $820 (CheapOair) |
One-way from | $411 (SmartFares) |
Popular in | December |
Cheapest in | August |
Average price | $1,069 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Vietnam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 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
Sat 11/14
10:50 pm-10:35 am
1 stop20h 45m
Hanoi Noibai
Mon 12/7
11:35 am-5:05 pm
1 stop20h 30m
$913
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sat 10/17
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
Thu 10/22
5:50 pm-6:00 pm
1 stop38h 10m
$914
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Thu 10/22
6:20 am-9:05 pm
2 stops24h 45m
Da Nang
Mon 10/26
3:45 pm-5:12 pm
2 stops39h 27m
$958
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sat 9/5
6:20 am-11:15 pm
2 stops26h 55m
Ho Chi Minh City
Sun 9/20
7:30 am-10:40 pm
2 stops29h 10m
$993
Quickest round-trip
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sat 8/29
12:45 am-9:40 am
1 stop18h 55m
Ho Chi Minh City
Thu 11/12
11:00 am-5:05 pm
1 stop21h 05m
$997
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Mon 10/26
6:00 am-9:45 pm
2 stops25h 45m
Hanoi Noibai
Sun 11/15
11:05 pm-4:12 pm
2 stops32h 07m
$1,007
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Tue 8/25
6:00 am-9:35 pm
2 stops25h 35m
Hanoi Noibai
Sat 9/5
11:10 pm-10:23 pm
2 stops37h 13m
$1,007
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Wed 9/9
12:45 am-7:20 am
2 stops40h 35m
Ho Chi Minh City
Mon 9/14
10:50 am-6:40 pm
1 stop21h 50m
$1,011
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Fri 8/21
6:20 am-11:15 pm
2 stops26h 55m
Ho Chi Minh City
Sun 9/13
1:55 pm-5:19 pm
2 stops41h 24m
$1,019
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Fri 9/4
12:45 am-4:20 pm
1 stop25h 35m
Ho Chi Minh City
Fri 10/9
10:50 am-6:00 pm
1 stop21h 10m
$1,025
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-DAD
ONT-SGN
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-DAD
ONT-SGN
What is the cheapest month to book a flight from Ontario to Vietnam?
Currently, March is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $737). Flying from Ontario to Vietnam in December is currently the most expensive (average of $1,587). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Ontario to Vietnam?
The best time to book flights from Ontario to Vietnam is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Vietnam
Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated July 26, 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.
Overall
8.8
Boarding
8.9
Food
8.6
Comfort
8.8
Entertainment
8.7
Crew
9.1
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.8
Boarding
8.9
Food
8.6
Comfort
8.8
Entertainment
8.7
Crew
9.1
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.8
Boarding
8.9
Food
8.6
Comfort
8.8
Entertainment
8.7
Crew
9.1
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.8
Boarding
8.9
Food
8.6
Comfort
8.8
Entertainment
8.7
Crew
9.1
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.8
Boarding
8.9
Food
8.6
Comfort
8.8
Entertainment
8.7
Crew
9.1
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.8
Boarding
8.9
Food
8.6
Comfort
8.8
Entertainment
8.7
Crew
9.1
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to Vietnam
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Vietnam by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Vietnam by cabin class
Find flights from Ontario to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Vietnam flights
Browse other Ontario and Vietnam flight options. Last updated on July 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Vietnam flights
Consider these flights traveling from Ontario to Vietnam.
Fly to Vietnam regions
Consider these flights traveling to Vietnam regions.
Top 5 airlines flying from Ontario to Vietnam
Discover the top 5 airlines that operate flights from Ontario to Vietnam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$611 | Average$852 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$656 | Average$755 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$690 | Average$817 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$741 | Average$902 | FlexibilityNo cancel fee | On-timeN/A |