$374+ Cheap flights from Ontario (ONT) to Vietnam
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Nov 3 — Nov 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 October 4, 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 October 4, 2026.
This Jetabroad deal was found by Cheapflights users on 10/3. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 pm -
2 stops27h 50m
Sun 11/87:55 am -
2 stops24h 17m
Deal found 10/3![Korean Air logo]()
$773
This IEagle deal was found by Cheapflights users on 10/3. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:20 am -
2 stops40h 30m
Sat 11/711:40 pm -
2 stops32h 32m
Deal found 10/3![Korean Air logo]()
$774
This Delta deal was found by Cheapflights users on 9/29. 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.
Fri 11/277:00 am -
2 stops24h 25m
Sat 12/127:55 am -
2 stops23h 33m
Deal found 9/29![Delta logo]()
$777
This Korean Air deal was found by Cheapflights users on 9/30. 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 11/187:00 am -
2 stops24h 25m
Wed 12/22:05 pm -
2 stops42h 10m
Deal found 9/30![Korean Air logo]()
$782
This Delta deal was found by Cheapflights users on 9/30. 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.
Sat 11/215:56 pm -
2 stops38h 54m
Tue 12/87:55 am -
2 stops24h 20m
Deal found 9/30![Delta logo]()
$783
This Expedia deal was found by Cheapflights users on 10/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:56 pm -
2 stops26h 14m
Mon 11/2312:20 pm -
2 stops25h 40m
Deal found 10/2![Korean Air logo]()
$785
This oojo deal was found by Cheapflights users on 10/2. 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.
Thu 10/2212:10 am -
1 stop19h 30m
Fri 10/3011:00 am -
1 stop21h 05m
Deal found 10/2![China Airlines logo]()
$788
This oojo deal was found by Cheapflights users on 10/2. 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.
Mon 11/210:50 pm -
1 stop26h 25m
Sun 12/65:15 pm -
1 stop38h 50m
Deal found 10/2![China Airlines logo]()
$789
This Delta deal was found by Cheapflights users on 10/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:20 am -
2 stops38h 50m
Wed 12/911:05 pm -
2 stops32h 17m
Deal found 10/3![Delta logo]()
$792
This SmartFares deal was found by Cheapflights users on 10/2. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:10 am -
1 stop19h 30m
Fri 10/3011:00 am -
1 stop21h 05m
Deal found 10/2![China Airlines logo]()
$795
This oojo deal was found by Cheapflights users on 10/1. 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.
Sun 10/1812:10 am -
1 stop19h 30m
Mon 11/165:15 pm -
1 stop38h 50m
Deal found 10/1![China Airlines logo]()
$796
This Korean Air deal was found by Cheapflights users on 9/30. 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 10/216:20 am -
2 stops25h 15m
Thu 10/2912:20 pm -
2 stops24h 23m
Deal found 9/30![Korean Air logo]()
$797
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 October 4, 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 October 4, 2026.
This Delta deal was found by Cheapflights users on 9/29. 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.
Wed 11/257:00 am -
2 stops24h 25m
Tue 12/87:55 am -
2 stops23h 27m
Deal found 9/29![Delta logo]()
$777
This Korean Air deal was found by Cheapflights users on 10/1. 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.
Fri 3/53:30 pm -
2 stops41h 20m
Fri 4/167:30 am -
2 stops23h 47m
Deal found 10/1![Korean Air logo]()
$780
This Korean Air deal was found by Cheapflights users on 10/2. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/296:00 am -
2 stops25h 25m
Sat 12/127:55 am -
2 stops23h 33m
Deal found 10/2![Multiple Airlines logo]()
$832
This China Airlines deal was found by Cheapflights users on 10/1. 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.
Sun 11/810:50 pm -
1 stop20h 45m
Thu 11/1211:35 am -
1 stop20h 30m
Deal found 10/1![China Airlines logo]()
$893
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Mon 11/236:00 am -
2 stops27h 15m
Fri 12/187:30 am -
2 stops25h 16m
Deal found 9/29![United Airlines logo]()
$906
This Korean Air deal was found by Cheapflights users on 10/2. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:20 am -
2 stops25h 50m
Fri 10/302:05 pm -
2 stops41h 07m
Deal found 10/2![Korean Air logo]()
$783
This Delta deal was found by Cheapflights users on 10/2. 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.
Tue 1/127:00 am -
2 stops23h 45m
Thu 2/411:05 pm -
2 stops32h 07m
Deal found 10/2![Delta logo]()
$810
This Korean Air deal was found by Cheapflights users on 10/2. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops25h 05m
Sun 12/62:05 pm -
2 stops42h 10m
Deal found 10/2![Korean Air logo]()
$783
This Delta deal was found by Cheapflights users on 9/30. 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.
Sat 10/246:20 am -
2 stops27h 30m
Sat 11/1411:40 pm -
2 stops38h 20m
Deal found 9/30![Delta logo]()
$827
This United Airlines deal was found by Cheapflights users on 9/29. 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 1/246:00 am -
2 stops26h 10m
Wed 2/246:00 am -
2 stops24h 27m
Deal found 9/29![United Airlines logo]()
$910
This China Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 10/3111:50 pm -
1 stop26h 40m
Tue 12/811:35 am -
1 stop20h 30m
Deal found 10/4![China Airlines logo]()
$943
This Mytrip deal was found by Cheapflights users on 10/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:10 am -
2 stops26h 50m
Thu 10/2910:15 pm -
2 stops33h 50m
Deal found 10/2![Multiple Airlines logo]()
$949
This Korean Air deal was found by Cheapflights users on 10/3. 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.
Sun 11/86:00 pm -
2 stops26h 10m
Thu 11/1212:20 pm -
2 stops25h 40m
Deal found 10/3![Korean Air logo]()
$798
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Thu 1/286:00 am -
2 stops26h 10m
Tue 2/96:00 am -
2 stops24h 27m
Deal found 9/29![United Airlines logo]()
$910
This Delta deal was found by Cheapflights users on 9/29. 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.
Sat 11/286:00 am -
2 stops25h 25m
Fri 12/411:45 pm -
2 stops38h 14m
Deal found 9/29![Delta logo]()
$875
This Korean Air deal was found by Cheapflights users on 10/1. 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 -
2 stops25h 15m
Mon 10/2612:20 pm -
2 stops24h 23m
Deal found 10/1![Korean Air logo]()
$798
This China Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 -
1 stop20h 45m
Sun 12/1311:35 am -
1 stop20h 30m
Deal found 10/4![China Airlines logo]()
$988
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sat 2/134:03 pm -
2 stops40h 07m
Tue 3/307:00 am -
2 stops19h 20m
Deal found 9/29![United Airlines logo]()
$910
This Delta deal was found by Cheapflights users on 9/29. 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 11/226:00 am -
2 stops25h 25m
Sun 12/611:45 pm -
2 stops31h 37m
Deal found 9/29![Delta logo]()
$875
This Korean Air deal was found by Cheapflights users on 10/3. 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 3/277:00 am -
2 stops25h 10m
Sun 4/117:30 am -
2 stops23h 47m
Deal found 10/3![Korean Air logo]()
$853
This China Airlines deal was found by Cheapflights users on 10/2. 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.
Mon 11/210:50 pm -
1 stop19h 25m
Thu 11/510:25 am -
1 stop21h 40m
Deal found 10/2![China Airlines logo]()
$1,033
This Delta deal was found by Cheapflights users on 9/29. 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 11/226:00 am -
2 stops25h 25m
Fri 12/411:45 pm -
2 stops38h 14m
Deal found 9/29![Delta logo]()
$875
This Korean Air deal was found by Cheapflights users on 10/2. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/47:00 am -
2 stops40h 15m
Sun 7/43:55 pm -
2 stops39h 22m
Deal found 10/2![Korean Air logo]()
$853
This China Airlines deal was found by Cheapflights users on 9/30. 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 2/2110:50 pm -
2 stops24h 20m
Tue 3/211:35 am -
1 stop20h 30m
Deal found 9/30![China Airlines logo]()
$1,036
This Delta deal was found by Cheapflights users on 10/1. 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.
Fri 11/137:00 am -
2 stops23h 40m
Fri 11/2011:00 pm -
2 stops39h 00m
Deal found 10/1![Delta logo]()
$927
This Korean Air deal was found by Cheapflights users on 10/3. 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.
Tue 3/27:00 am -
2 stops40h 15m
Sat 3/1311:00 pm -
2 stops37h 43m
Deal found 10/3![Korean Air logo]()
$868
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Mon 11/25:00 am -
2 stops27h 05m
Sun 11/812:25 am -
2 stops27h 04m
Deal found 10/3![United Airlines logo]()
$1,264
This Korean Air deal was found by Cheapflights users on 10/3. 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.
Tue 3/23:30 pm -
2 stops31h 45m
Thu 5/63:55 pm -
2 stops39h 22m
Deal found 10/3![Korean Air logo]()
$868
This Delta deal was found by Cheapflights users on 9/30. 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 10/296:00 am -
2 stops25h 25m
Wed 11/1111:05 pm -
2 stops39h 44m
Deal found 9/30![Delta logo]()
$977
This Korean Air deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 2/173:30 pm -
2 stops39h 10m
Thu 3/43:45 pm -
2 stops45h 58m
Deal found 10/4![Korean Air logo]()
$868
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated October 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated October 4, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 10/2. 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.
Mon 10/1212:10 am -
1 stop26h 10m
Mon 11/235:15 pm -
1 stop38h 50m
Deal found 10/2![China Airlines logo]()
$796
This oojo deal was found by Cheapflights users on 10/1. 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.
Mon 10/1212:10 am -
1 stop26h 10m
Wed 1/2711:00 am -
1 stop21h 05m
Deal found 10/1![China Airlines logo]()
$811
This Delta deal was found by Cheapflights users on 9/30. 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.
Mon 10/121:35 pm -
2 stops43h 40m
Mon 11/911:40 pm -
2 stops38h 20m
Deal found 9/30![Delta logo]()
$812
This Korean Air deal was found by Cheapflights users on 9/30. 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.
Mon 10/126:00 pm -
2 stops39h 15m
Sat 11/77:55 am -
2 stops24h 17m
Deal found 9/30![Korean Air logo]()
$822
This Delta deal was found by Cheapflights users on 9/30. 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 10/136:00 am -
2 stops27h 15m
Mon 11/237:55 am -
2 stops30h 54m
Deal found 9/30![Delta logo]()
$777
This Korean Air deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 10/136:20 am -
2 stops26h 55m
Mon 11/2311:40 pm -
2 stops32h 36m
Deal found 10/4![Korean Air logo]()
$813
This Korean Air deal was found by Cheapflights users on 9/30. 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 10/146:20 am -
2 stops40h 15m
Wed 11/1111:40 pm -
2 stops38h 20m
Deal found 9/30![Korean Air logo]()
$782
This Korean Air deal was found by Cheapflights users on 9/30. 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.
Sun 10/186:00 pm -
2 stops37h 35m
Thu 10/2912:20 pm -
2 stops24h 23m
Deal found 9/30![Korean Air logo]()
$803
This Korean Air deal was found by Cheapflights users on 9/30. 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 10/216:20 am -
2 stops25h 15m
Thu 10/2912:20 pm -
2 stops24h 23m
Deal found 9/30![Korean Air logo]()
$797
This Korean Air deal was found by Cheapflights users on 10/3. 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.
Sun 10/256:00 pm -
2 stops37h 45m
Thu 12/1012:20 pm -
2 stops25h 39m
Deal found 10/3![Korean Air logo]()
$798
This Delta deal was found by Cheapflights users on 10/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:20 am -
2 stops38h 50m
Wed 12/911:05 pm -
2 stops32h 17m
Deal found 10/3![Delta logo]()
$792
This Expedia deal was found by Cheapflights users on 10/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:56 pm -
2 stops26h 14m
Mon 11/2312:20 pm -
2 stops25h 40m
Deal found 10/2![Korean Air 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 October 4, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
This Delta deal was found by Cheapflights users on 10/2. 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.
Mon 1/117:00 am -
2 stops38h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Delta logo]()
$374
This Korean Air deal was found by Cheapflights users on 10/2. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/35:38 pm -
2 stops28h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Korean Air logo]()
$377
This Delta deal was found by Cheapflights users on 10/2. 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.
Mon 1/117:00 am -
2 stops37h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Delta logo]()
$379
This Korean Air deal was found by Cheapflights users on 10/1. 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.
Sun 2/213:30 pm -
2 stops28h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Korean Air logo]()
$382
This Korean Air deal was found by Cheapflights users on 10/1. 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.
Sun 2/217:00 am -
2 stops49h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Korean Air logo]()
$388
This Delta deal was found by Cheapflights users on 10/2. 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.
Tue 10/276:20 am -
2 stops38h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Delta logo]()
$410
This Delta deal was found by Cheapflights users on 10/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:20 am -
2 stops26h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Delta logo]()
$417
This lastminute.com deal was found by Cheapflights users on 9/29. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/187:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Korean Air logo]()
$419
This Korean Air deal was found by Cheapflights users on 10/1. 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.
Sun 10/186:00 pm -
2 stops28h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Korean Air logo]()
$420
This lastminute.com deal was found by Cheapflights users on 9/30. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/177:00 am -
2 stops23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Korean Air logo]()
$420
This Delta deal was found by Cheapflights users on 10/2. 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.
Mon 2/86:00 am -
2 stops24h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Delta logo]()
$424
This Korean Air deal was found by Cheapflights users on 10/3. 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.
Wed 1/203:30 pm -
2 stops31h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Korean Air logo]()
$427
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 October 4, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $753 (Korean Air) |
One-way from | $374 (Delta) |
Popular in | December |
Cheapest in | March |
Average price | $766 |
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 7,457,451 searches. Data last updated October 4, 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 Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Mon 1/11
7:00 am-12:50 pm
2 stops38h 50m
Ho Chi Minh City
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$374
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Mon 1/11
7:00 am-11:10 am
2 stops37h 10m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$379
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Tue 10/27
6:20 am-11:10 am
2 stops38h 50m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$410
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Tue 10/20
6:20 am-11:15 pm
2 stops26h 55m
Ho Chi Minh City
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$417
OntarioDa Nang
ONT Ontario - DAD Da Nang
ONTDAD
Ontario
Mon 2/8
6:00 am-9:40 pm
2 stops24h 40m
Da Nang
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$424
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Thu 11/26
7:00 am-9:45 pm
2 stops23h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$435
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Tue 11/24
6:00 am-9:45 pm
2 stops24h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$435
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Wed 10/28
6:20 am-11:10 am
2 stops38h 50m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$438
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Mon 11/2
6:00 pm-9:45 pm
2 stops36h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$438
OntarioHanoi
ONT Ontario - HAN Hanoi Noibai
ONTHAN
Ontario
Tue 11/24
7:00 am-9:45 pm
2 stops23h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$438
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-SGN
ONT-HAN
ONT-DAD
ONT-PQC
ONT-CXR
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-SGN
ONT-HAN
ONT-DAD
ONT-PQC
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 $740). Flying from Ontario to Vietnam in December is currently the most expensive (average of $1,540). 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 71 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 October 4, 2026.
See what other customers who have flown with STARLUX Airlines,Korean Air, andChina Airlines from Ontario to Vietnam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.8
Food
8.5
Crew
9.1
Entertainment
8.7
Overall
8.7
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Food
8.5
Crew
9.1
Entertainment
8.7
Overall
8.7
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Food
8.5
Crew
9.1
Entertainment
8.7
Overall
8.7
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Food
8.5
Crew
9.1
Entertainment
8.7
Overall
8.7
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Food
8.5
Crew
9.1
Entertainment
8.7
Overall
8.7
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Food
8.5
Crew
9.1
Entertainment
8.7
Overall
8.7
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
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 October 4, 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 7,457,451 searches. Data last updated October 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$611 | Average$891 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$656 | Average$755 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$689 | Average$865 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$735 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$743 | Average$927 | FlexibilityNo cancel fee | On-timeN/A |