$470+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Aug 2 — Aug 91
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Vietnam with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Vietnam
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Cheapest flights from Ontario to VietnamExplore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 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 July 3, 2026.
This oojo deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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.
Fri 10/3010:45 pm
ONT
- DAD
1 stop28h 30m
STARLUX Airlines
Fri 11/66:25 pm
DAD
- ONT
1 stop36h 30m
STARLUX Airlines
Deal found 7/3![STARLUX Airlines logo]()
$904
This oojo deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 11/239:45 pm
ONT
- HAN
1 stop21h 45m
STARLUX Airlines
Sat 12/511:40 am
HAN
- ONT
1 stop19h 15m
STARLUX Airlines
Deal found 7/3![STARLUX Airlines logo]()
$910
This oojo deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/1911:55 pm
ONT
- DAD
1 stop27h 40m
STARLUX Airlines
Sun 8/306:45 pm
DAD
- ONT
1 stop36h 55m
STARLUX Airlines
Deal found 7/3![STARLUX Airlines logo]()
$923
This oojo deal was found by Cheapflights users on 7/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:45 pm
ONT
- DAD
1 stop28h 30m
STARLUX Airlines
Sun 11/296:25 pm
DAD
- ONT
1 stop36h 30m
STARLUX Airlines
Deal found 7/2![STARLUX Airlines logo]()
$930
This KAYAK deal was found by Cheapflights users on 7/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:55 pm
ONT
- DAD
1 stop27h 40m
STARLUX Airlines
Tue 9/86:45 pm
DAD
- ONT
1 stop36h 20m
STARLUX Airlines
Deal found 7/2![STARLUX Airlines logo]()
$951
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:30 pm
ONT
- HAN
1 stop20h 40m
STARLUX Airlines
Fri 11/1311:40 am
HAN
- ONT
1 stop19h 15m
STARLUX Airlines
Deal found 7/1![STARLUX Airlines logo]()
$952
This Delta deal was found by Cheapflights users on 6/30. 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 10/146:20 am
ONT
- HAN
2 stops25h 15m
Delta
Mon 11/211:05 pm
HAN
- ONT
2 stops33h 07m
Delta
Deal found 6/30![Delta logo]()
$956
This oojo deal was found by Cheapflights users on 7/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:45 pm
ONT
- HAN
1 stop21h 45m
STARLUX Airlines
Fri 12/1111:40 am
HAN
- ONT
1 stop19h 15m
STARLUX Airlines
Deal found 7/2![STARLUX Airlines logo]()
$957
This Trip.com deal was found by Cheapflights users on 7/1. 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.
Mon 11/309:45 pm
ONT
- HAN
1 stop21h 45m
STARLUX Airlines
Fri 12/1811:40 am
HAN
- ONT
1 stop19h 15m
STARLUX Airlines
Deal found 7/1![STARLUX Airlines logo]()
$959
This Korean Air deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 11/237:00 am
ONT
- HAN
2 stops37h 10m
Korean Air
Sun 12/612:20 pm
HAN
- ONT
2 stops43h 57m
Korean Air
Deal found 7/3![Korean Air logo]()
$961
This Korean Air deal was found by Cheapflights users on 7/1. 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.
Tue 10/206:20 am
ONT
- HAN
2 stops25h 15m
Korean Air
Mon 11/211:05 pm
HAN
- ONT
2 stops33h 07m
Korean Air
Deal found 7/1![Korean Air logo]()
$962
This STARLUX Airlines deal was found by Cheapflights users on 7/2. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:30 pm
ONT
- DAD
1 stop28h 40m
STARLUX Airlines
Sun 10/256:25 pm
DAD
- ONT
1 stop36h 30m
STARLUX Airlines
Deal found 7/2![STARLUX Airlines logo]()
$965
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 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 July 3, 2026.
This Delta deal was found by Cheapflights users on 6/30. 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 10/146:00 am
ONT
- HAN
2 stops25h 35m
Delta
Tue 11/311:05 pm
HAN
- ONT
2 stops32h 19m
Delta
Deal found 6/30![Delta logo]()
$956
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/266:00 am
ONT
- SGN
2 stops25h 50m
United Airlines
Thu 10/297:30 am
SGN
- ONT
2 stops27h 26m
United Airlines
Deal found 7/2![United Airlines logo]()
$1,003
This China Airlines deal was found by Cheapflights users on 6/29. 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 9/412:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sat 9/2610:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 6/29![China Airlines logo]()
$1,015
This Korean Air deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/276:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Wed 9/910:55 pm
DAD
- ONT
2 stops32h 25m
Korean Air
Deal found 7/3![Korean Air logo]()
$1,038
This STARLUX Airlines deal was found by Cheapflights users on 7/1. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:30 pm
ONT
- SGN
1 stop20h 45m
STARLUX Airlines
Thu 10/226:05 pm
SGN
- ONT
1 stop37h 00m
STARLUX Airlines
Deal found 7/1![STARLUX Airlines logo]()
$1,055
This FlightHub deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:02 am
ONT
- HAN
2 stops35h 13m
Multiple Airlines
Sun 10/47:30 pm
HAN
- ONT
2 stops42h 15m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,111
This Delta deal was found by Cheapflights users on 7/2. 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.
Fri 10/306:00 am
ONT
- SGN
2 stops26h 25m
Delta
Mon 11/302:05 pm
SGN
- ONT
2 stops42h 12m
Delta
Deal found 7/2![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 9/1012:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Sat 9/2610:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 6/29![China Airlines logo]()
$1,015
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:08 am
ONT
- SGN
2 stops25h 47m
United Airlines
Tue 9/297:00 am
SGN
- ONT
2 stops22h 11m
United Airlines
Deal found 6/28![United Airlines logo]()
$1,023
This Korean Air deal was found by Cheapflights users on 6/29. 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.
Sun 11/16:20 am
ONT
- HAN
2 stops24h 25m
Korean Air
Thu 11/512:20 pm
HAN
- ONT
2 stops43h 52m
Korean Air
Deal found 6/29![Korean Air logo]()
$1,062
This STARLUX Airlines deal was found by Cheapflights users on 6/30. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:30 pm
ONT
- DAD
1 stop28h 40m
STARLUX Airlines
Sun 10/256:25 pm
DAD
- ONT
1 stop36h 30m
STARLUX Airlines
Deal found 6/30![STARLUX Airlines logo]()
$1,065
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 8/96:20 am
ONT
- SGN
2 stops26h 55m
Delta
Sat 10/1011:45 pm
SGN
- ONT
2 stops38h 01m
Delta
Deal found 6/30![Delta logo]()
$1,010
This China Airlines deal was found by Cheapflights users on 6/29. 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 9/412:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Wed 9/2310:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 6/29![China Airlines logo]()
$1,015
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 9/189:01 am
ONT
- SGN
2 stops23h 04m
United Airlines
Wed 10/1411:15 pm
SGN
- ONT
2 stops35h 16m
United Airlines
Deal found 7/3![United Airlines logo]()
$1,030
This Korean Air deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Wed 9/23:55 pm
DAD
- ONT
2 stops39h 26m
Korean Air
Deal found 7/3![Korean Air logo]()
$1,077
This China Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 9/1012:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Wed 9/2310:00 am
DAD
- ONT
1 stop22h 00m
China Airlines
Deal found 6/29![China Airlines logo]()
$1,015
This Delta deal was found by Cheapflights users on 7/1. 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.
Wed 8/196:20 am
ONT
- DAD
2 stops24h 45m
Delta
Wed 9/23:55 pm
DAD
- ONT
2 stops45h 39m
Delta
Deal found 7/1![Delta logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 6/29. 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 9/91:56 pm
ONT
- SGN
2 stops41h 59m
United Airlines
Sun 9/277:00 am
SGN
- ONT
2 stops24h 51m
United Airlines
Deal found 6/29![United Airlines logo]()
$1,040
This Korean Air deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/286:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Wed 9/910:55 pm
DAD
- ONT
2 stops32h 25m
Korean Air
Deal found 7/3![Korean Air logo]()
$1,077
This China Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 10/2212:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Tue 11/311:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 7/1![China Airlines logo]()
$1,019
This Delta deal was found by Cheapflights users on 7/2. 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.
Wed 8/266:20 am
ONT
- DAD
2 stops24h 45m
Delta
Wed 9/910:55 pm
DAD
- ONT
2 stops37h 09m
Delta
Deal found 7/2![Delta logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 7/2. 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 11/306:00 am
ONT
- SGN
2 stops24h 50m
United Airlines
Mon 12/1411:05 pm
SGN
- ONT
2 stops39h 01m
United Airlines
Deal found 7/2![United Airlines logo]()
$1,042
This Korean Air deal was found by Cheapflights users on 6/29. 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.
Sat 9/126:20 am
ONT
- HAN
2 stops38h 15m
Korean Air
Sun 9/2711:10 pm
HAN
- ONT
2 stops32h 10m
Korean Air
Deal found 6/29![Korean Air logo]()
$1,093
This China Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 11/2510:50 pm
ONT
- HAN
1 stop20h 45m
China Airlines
Sat 12/511:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 7/3![China Airlines logo]()
$1,020
This United Airlines deal was found by Cheapflights users on 6/30. 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 7/156:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Tue 9/1511:15 pm
SGN
- ONT
2 stops34h 46m
United Airlines
Deal found 6/30![United Airlines logo]()
$1,050
This Delta deal was found by Cheapflights users on 7/1. 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.
Wed 8/196:00 am
ONT
- DAD
2 stops25h 05m
Delta
Sat 8/2910:55 pm
DAD
- ONT
2 stops38h 39m
Delta
Deal found 7/1![Delta logo]()
$1,072
This Korean Air deal was found by Cheapflights users on 6/29. 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.
Fri 9/116:20 am
ONT
- HAN
2 stops38h 15m
Korean Air
Sun 9/2711:10 pm
HAN
- ONT
2 stops37h 30m
Korean Air
Deal found 6/29![Korean Air logo]()
$1,093
This China Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Sat 12/511:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 6/28![China Airlines logo]()
$1,020
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 8/126:08 am
ONT
- SGN
2 stops25h 47m
United Airlines
Sun 8/237:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 7/1![United Airlines logo]()
$1,060
This China Airlines deal was found by Cheapflights users on 7/2. 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 11/110:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Thu 11/511:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 7/2![China Airlines logo]()
$1,020
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated July 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated July 3, 2026 and is based on user searches.
This lol.travel deal was found by Cheapflights users on 6/29. 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 lol.travel 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
Korean Air
Sun 8/237:30 am
SGN
- ONT
2 stops23h 51m
Korean Air
Deal found 6/29![Korean Air logo]()
$997
This oojo deal was found by Cheapflights users on 7/1. 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 8/1112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Sat 8/155:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 7/1![China Airlines logo]()
$973
This Expedia deal was found by Cheapflights users on 6/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:20 am
ONT
- HAN
2 stops38h 15m
Korean Air
Tue 8/2511:10 pm
HAN
- ONT
2 stops32h 11m
Korean Air
Deal found 6/29![Korean Air logo]()
$962
This oojo deal was found by Cheapflights users on 7/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1412:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Sat 8/2910:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/2![China Airlines logo]()
$970
This oojo deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/1911:55 pm
ONT
- DAD
1 stop27h 40m
STARLUX Airlines
Sun 8/306:45 pm
DAD
- ONT
1 stop36h 55m
STARLUX Airlines
Deal found 7/3![STARLUX Airlines logo]()
$923
This oojo deal was found by Cheapflights users on 6/29. 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.
Thu 8/2012:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Wed 9/210:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 6/29![China Airlines logo]()
$992
This oojo deal was found by Cheapflights users on 6/30. 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.
Fri 8/2112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Thu 9/35:50 pm
HAN
- ONT
1 stop38h 50m
China Airlines
Deal found 6/30![China Airlines logo]()
$974
This oojo deal was found by Cheapflights users on 6/29. 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.
Tue 8/2512:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Thu 9/310:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 6/29![China Airlines logo]()
$967
This oojo deal was found by Cheapflights users on 6/30. 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.
Tue 8/2512:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Wed 9/910:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 6/30![China Airlines logo]()
$968
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub 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
Wed 9/910:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 7/2![China Airlines logo]()
$981
This KAYAK deal was found by Cheapflights users on 7/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:55 pm
ONT
- DAD
1 stop27h 40m
STARLUX Airlines
Tue 9/86:45 pm
DAD
- ONT
1 stop36h 20m
STARLUX Airlines
Deal found 7/2![STARLUX Airlines logo]()
$951
This China Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:45 am
ONT
- SGN
1 stop25h 35m
China Airlines
Thu 9/1010:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 6/28![China Airlines logo]()
$989
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 3, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:58 am
ONT
- SGN
2 stops33h 32m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$470
This oojo deal was found by Cheapflights users on 6/30. 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.
Thu 11/124:09 pm
ONT
- SGN
2 stops25h 21m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$477
This oojo deal was found by Cheapflights users on 7/1. 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.
Wed 8/2612:00 pm
ONT
- SGN
2 stops36h 25m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$478
This oojo deal was found by Cheapflights users on 7/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:13 pm
ONT
- SGN
2 stops28h 17m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$479
This SmartFares deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
Deal found 7/3![Korean Air logo]()
$487
This Gotogate deal was found by Cheapflights users on 7/1. 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.
Wed 10/2811:50 pm
ONT
- SGN
1 stop27h 00m
China Airlines
Deal found 7/1![China Airlines logo]()
$488
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Deal found 7/2![China Airlines logo]()
$489
This Gotogate deal was found by Cheapflights users on 7/1. 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.
Mon 11/210:50 pm
ONT
- SGN
1 stop20h 10m
China Airlines
Deal found 7/1![China Airlines logo]()
$492
This ScholarTrip deal was found by Cheapflights users on 7/2. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:20 am
ONT
- SGN
2 stops25h 50m
Korean Air
Deal found 7/2![Korean Air logo]()
$493
This Trip.com deal was found by Cheapflights users on 6/30. 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 Trip.com 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 6/30![China Airlines logo]()
$494
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/612:45 am
ONT
- DAD
1 stop18h 15m
China Airlines
Deal found 7/2![China Airlines logo]()
$502
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 am
ONT
- HAN
1 stop26h 05m
China Airlines
Deal found 6/28![China Airlines logo]()
$502
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 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $904 (oojo) |
One-way from | $470 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $1,067 |
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 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
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Wed 10/14
6:00 am-9:35 pm
2 stops25h 35m
Hanoi Noibai
Tue 11/3
11:05 pm-4:24 pm
2 stops32h 19m
$956
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 10/26
6:00 am-9:50 pm
2 stops25h 50m
Ho Chi Minh City
Thu 10/29
7:30 am-8:56 pm
2 stops27h 26m
$1,003
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Fri 10/30
6:00 am-10:25 pm
2 stops26h 25m
Ho Chi Minh City
Mon 11/30
2:05 pm-5:17 pm
2 stops42h 12m
$1,010
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Sun 8/9
6:20 am-11:15 pm
2 stops26h 55m
Ho Chi Minh City
Sat 10/10
11:45 pm-11:46 pm
2 stops38h 01m
$1,010
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Fri 9/4
12:45 am-4:30 pm
1 stop25h 45m
Da Nang
Sat 9/26
10:00 am-6:00 pm
1 stop22h 00m
$1,015
Quickest round-trip
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Thu 9/10
12:45 am-9:00 am
1 stop18h 15m
Da Nang
Sat 9/26
10:00 am-6:00 pm
1 stop22h 00m
$1,015
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Fri 9/4
12:45 am-4:30 pm
1 stop25h 45m
Da Nang
Wed 9/23
10:00 am-6:00 pm
1 stop22h 00m
$1,015
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Thu 9/10
12:45 am-9:00 am
1 stop18h 15m
Da Nang
Wed 9/23
10:00 am-6:00 pm
1 stop22h 00m
$1,015
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Thu 10/22
12:10 am-10:30 am
1 stop20h 20m
Hanoi Noibai
Tue 11/3
11:35 am-4:50 pm
1 stop20h 15m
$1,019
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Wed 11/25
10:50 pm-10:35 am
1 stop20h 45m
Hanoi Noibai
Sat 12/5
11:35 am-4:50 pm
1 stop20h 15m
$1,020
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-DAD
ONT-HAN
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-DAD
ONT-HAN
ONT-SGN
What is the cheapest month to book a flight from Ontario to Vietnam?
Currently, April is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $360). Flying from Ontario to Vietnam in December is currently the most expensive (average of $928). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Ontario to Vietnam?
The best time to book flights from Ontario to Vietnam is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Vietnam
Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated July 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.
Comfort
8.9
Entertainment
8.8
Crew
9.2
Food
8.6
Overall
8.9
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Comfort
8.9
Entertainment
8.8
Crew
9.2
Food
8.6
Overall
8.9
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Comfort
8.9
Entertainment
8.8
Crew
9.2
Food
8.6
Overall
8.9
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Comfort
8.9
Entertainment
8.8
Crew
9.2
Food
8.6
Overall
8.9
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Comfort
8.9
Entertainment
8.8
Crew
9.2
Food
8.6
Overall
8.9
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Comfort
8.9
Entertainment
8.8
Crew
9.2
Food
8.6
Overall
8.9
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Vietnam
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Vietnam by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Vietnam by cabin class
Find flights from Ontario to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Vietnam flights
Browse other Ontario and Vietnam flight options. Last updated on July 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 July 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$611 | Average$832 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$654 | Average$735 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$691 | Average$816 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$742 | Average$848 | FlexibilityNo cancel fee | On-timeN/A |