$539+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
May 28 — Jun 41
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 April 28, 2026.
Explore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 am
ONT
- SGN
2 stops39h 35m
Delta
Mon 11/238:00 am
SGN
- ONT
2 stops29h 43m
Delta
Deal found 4/23![Delta logo]()
$786
This CrystalTravel deal was found by Cheapflights users on 4/23. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Thu 10/227:30 am
SGN
- ONT
2 stops23h 47m
Korean Air
Deal found 4/23![Korean Air logo]()
$874
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
ONT
- SGN
2 stops27h 15m
Delta
Sun 5/247:30 am
SGN
- ONT
2 stops29h 04m
Delta
Deal found 4/23![Delta logo]()
$886
This CrystalTravel deal was found by Cheapflights users on 4/25. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
ONT
- SGN
2 stops24h 25m
Korean Air
Sat 11/148:00 am
SGN
- ONT
2 stops24h 17m
Korean Air
Deal found 4/25![Korean Air logo]()
$911
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:00 am
ONT
- SGN
2 stops25h 10m
Delta
Sun 9/2011:45 pm
SGN
- ONT
2 stops36h 55m
Delta
Deal found 4/23![Delta logo]()
$926
This Korean Air deal was found by Cheapflights users on 4/24. 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.
Mon 10/127:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Thu 11/198:00 am
SGN
- ONT
2 stops24h 17m
Korean Air
Deal found 4/24![Korean Air logo]()
$931
This Booking.com deal was found by Cheapflights users on 4/23. 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.
Tue 9/812:45 am
ONT
- SGN
1 stop25h 35m
Multiple Airlines
Sun 9/2711:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$969
This Booking.com deal was found by Cheapflights users on 4/23. 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.
Wed 9/212:45 am
ONT
- SGN
1 stop25h 35m
Multiple Airlines
Sat 9/2611:20 am
SGN
- ONT
1 stop20h 40m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$970
This CrystalTravel deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:10 pm
ONT
- SGN
1 stop21h 05m
STARLUX Airlines
Mon 10/1211:30 am
SGN
- ONT
1 stop19h 35m
STARLUX Airlines
Deal found 4/27![STARLUX Airlines logo]()
$973
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:00 am
ONT
- SGN
2 stops26h 20m
Delta
Sun 11/1511:50 pm
SGN
- ONT
2 stops37h 53m
Delta
Deal found 4/23![Delta logo]()
$976
This Gotogate deal was found by Cheapflights users on 4/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:10 am
ONT
- SGN
1 stop26h 10m
Multiple Airlines
Tue 12/1511:20 am
SGN
- ONT
1 stop20h 30m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$977
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 am
ONT
- HAN
2 stops24h 35m
Delta
Mon 10/1911:10 pm
HAN
- ONT
2 stops32h 07m
Delta
Deal found 4/26![Delta logo]()
$1,001
Best flights from Ontario to VietnamDiscover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
Discover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
This Delta deal was found by Cheapflights users on 4/25. 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 5/57:00 am
ONT
- SGN
2 stops25h 10m
Delta
Thu 5/287:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/25![Delta logo]()
$1,034
This STARLUX Airlines deal was found by Cheapflights users on 4/25. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:10 pm
ONT
- SGN
1 stop27h 45m
STARLUX Airlines
Mon 5/2511:30 am
SGN
- ONT
1 stop19h 35m
STARLUX Airlines
Deal found 4/25![STARLUX Airlines logo]()
$1,053
This China Airlines deal was found by Cheapflights users on 4/25. 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.
Tue 5/512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Wed 5/275:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/25![China Airlines logo]()
$1,077
This Qatar Airways deal was found by Cheapflights users on 4/24. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:10 pm
ONT
- HAN
2 stops29h 05m
Qatar Airways
Thu 10/297:10 pm
HAN
- ONT
2 stops37h 03m
Qatar Airways
Deal found 4/24![Qatar Airways logo]()
$1,107
This Korean Air deal was found by Cheapflights users on 4/26. 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.
Sun 9/67:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Thu 9/1011:10 pm
HAN
- ONT
2 stops37h 30m
Korean Air
Deal found 4/26![Korean Air logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Mon 8/317:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 4/27![United Airlines logo]()
$1,198
This China Airlines deal was found by Cheapflights users on 4/25. 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.
Mon 5/412:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Mon 5/255:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/25![China Airlines logo]()
$1,077
This BusinessClass deal was found by Cheapflights users on 4/23. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/74:03 pm
ONT
- VCS
3 stops34h 07m
Multiple Airlines
Sun 6/1410:00 am
VCS
- ONT
3 stops41h 09m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$2,237
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:00 am
ONT
- HAN
2 stops24h 35m
Delta
Tue 11/1011:05 pm
HAN
- ONT
2 stops33h 12m
Delta
Deal found 4/26![Delta logo]()
$1,160
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/106:00 am
ONT
- SGN
3 stops26h 05m
United Airlines
Sun 5/247:00 am
SGN
- ONT
2 stops24h 56m
United Airlines
Deal found 4/27![United Airlines logo]()
$1,212
This China Airlines deal was found by Cheapflights users on 4/22. 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 8/2212:45 am
ONT
- DAD
1 stop25h 45m
China Airlines
Thu 8/2710:00 am
DAD
- ONT
1 stop22h 40m
China Airlines
Deal found 4/22![China Airlines logo]()
$1,117
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Mon 5/46:00 am
ONT
- SGN
3 stops26h 05m
United Airlines
Mon 5/187:00 am
SGN
- ONT
2 stops19h 22m
United Airlines
Deal found 4/23![United Airlines logo]()
$1,224
This China Airlines deal was found by Cheapflights users on 4/26. 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 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 stop26h 40m
China Airlines
Wed 11/1111:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 4/26![China Airlines logo]()
$1,122
This Korean Air deal was found by Cheapflights users on 4/24. 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.
Mon 5/116:45 am
ONT
- DAD
2 stops24h 20m
Korean Air
Sat 5/303:55 pm
DAD
- ONT
2 stops39h 15m
Korean Air
Deal found 4/24![Korean Air logo]()
$1,367
This Delta deal was found by Cheapflights users on 4/24. 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.
Tue 5/126:45 am
ONT
- DAD
2 stops24h 20m
Delta
Sun 5/3110:55 pm
DAD
- ONT
2 stops37h 37m
Delta
Deal found 4/24![Delta logo]()
$1,322
This China Airlines deal was found by Cheapflights users on 4/26. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:50 pm
ONT
- HAN
1 stop26h 40m
China Airlines
Wed 11/1111:35 am
HAN
- ONT
1 stop20h 15m
China Airlines
Deal found 4/26![China Airlines logo]()
$1,122
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Thu 5/147:00 am
SGN
- ONT
2 stops19h 22m
United Airlines
Deal found 4/26![United Airlines logo]()
$1,278
This Delta deal was found by Cheapflights users on 4/24. 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 5/116:45 am
ONT
- DAD
2 stops24h 20m
Delta
Sun 5/313:55 pm
DAD
- ONT
2 stops44h 37m
Delta
Deal found 4/24![Delta logo]()
$1,322
This China Airlines deal was found by Cheapflights users on 4/25. 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.
Thu 5/712:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Thu 5/2811:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 4/25![China Airlines logo]()
$1,167
This Delta deal was found by Cheapflights users on 4/24. 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.
Sun 5/101:35 pm
ONT
- DAD
2 stops41h 30m
Delta
Mon 6/110:55 pm
DAD
- ONT
2 stops37h 37m
Delta
Deal found 4/24![Delta logo]()
$1,331
This Korean Air deal was found by Cheapflights users on 4/22. 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.
Fri 7/106:20 am
ONT
- DAD
2 stops24h 45m
Korean Air
Mon 8/3110:55 pm
DAD
- ONT
2 stops37h 45m
Korean Air
Deal found 4/22![Korean Air logo]()
$1,612
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Sat 5/211:15 pm
SGN
- ONT
2 stops32h 37m
United Airlines
Deal found 4/26![United Airlines logo]()
$1,394
This China Airlines deal was found by Cheapflights users on 4/23. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Wed 5/2711:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 4/23![China Airlines logo]()
$1,167
This Delta deal was found by Cheapflights users on 4/24. 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.
Sun 5/1011:52 am
ONT
- DAD
2 stops43h 13m
Delta
Sat 5/303:55 pm
DAD
- ONT
2 stops44h 39m
Delta
Deal found 4/24![Delta logo]()
$1,367
This China Airlines deal was found by Cheapflights users on 4/23. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Thu 5/285:50 pm
HAN
- ONT
1 stop38h 10m
China Airlines
Deal found 4/23![China Airlines logo]()
$1,167
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Sun 7/2611:15 pm
SGN
- ONT
2 stops37h 22m
United Airlines
Deal found 4/26![United Airlines logo]()
$1,544
This China Airlines deal was found by Cheapflights users on 4/25. 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.
Thu 5/712:10 am
ONT
- HAN
1 stop20h 20m
China Airlines
Fri 5/2911:30 am
HAN
- ONT
1 stop20h 30m
China Airlines
Deal found 4/25![China Airlines logo]()
$1,167
This Mytrip deal was found by Cheapflights users on 4/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/912:10 am
ONT
- VCS
2 stops26h 00m
Multiple Airlines
Wed 6/177:30 am
VCS
- ONT
2 stops23h 35m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$2,361
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Mon 5/116:00 am
ONT
- SGN
2 stops26h 05m
United Airlines
Wed 8/267:00 am
SGN
- ONT
2 stops25h 11m
United Airlines
Deal found 4/24![United Airlines logo]()
$1,619
This China Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/1312:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Fri 8/2810:50 am
SGN
- ONT
1 stop21h 50m
China Airlines
Deal found 4/27![China Airlines logo]()
$1,237
Last-minute flights from Ontario to VietnamDiscover last-minute flight deals from Ontario to Vietnam. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Vietnam. Data last updated April 28, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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.
Mon 4/2711:10 pm
ONT
- DAD
1 stop21h 50m
STARLUX Airlines
Tue 5/266:45 pm
DAD
- ONT
1 stop36h 20m
STARLUX Airlines
Deal found 4/27![STARLUX Airlines logo]()
$1,026
This oojo deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 4/2911:10 pm
ONT
- SGN
1 stop21h 05m
STARLUX Airlines
Mon 5/1111:30 am
SGN
- ONT
1 stop19h 35m
STARLUX Airlines
Deal found 4/27![STARLUX Airlines logo]()
$1,016
This Korean Air deal was found by Cheapflights users on 4/23. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Wed 6/247:30 am
SGN
- ONT
2 stops23h 49m
Korean Air
Deal found 4/23![Korean Air logo]()
$1,039
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:00 am
ONT
- SGN
2 stops25h 10m
Delta
Tue 6/237:30 am
SGN
- ONT
2 stops23h 49m
Delta
Deal found 4/23![Delta logo]()
$1,044
This FlightHub deal was found by Cheapflights users on 4/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:10 pm
ONT
- HAN
1 stop21h 00m
STARLUX Airlines
Fri 5/811:10 am
HAN
- ONT
1 stop19h 55m
STARLUX Airlines
Deal found 4/24![STARLUX Airlines logo]()
$1,031
This Justfly.com deal was found by Cheapflights users on 4/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:10 pm
ONT
- SGN
1 stop21h 05m
STARLUX Airlines
Sat 5/911:30 am
SGN
- ONT
1 stop19h 35m
STARLUX Airlines
Deal found 4/23![STARLUX Airlines logo]()
$1,017
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
ONT
- SGN
2 stops27h 15m
Delta
Sun 5/247:30 am
SGN
- ONT
2 stops29h 04m
Delta
Deal found 4/23![Delta logo]()
$886
This Gotogate deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Sun 5/1710:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/27![China Airlines logo]()
$1,032
This oojo deal was found by Cheapflights users on 4/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/412:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Thu 10/1510:50 am
SGN
- ONT
1 stop21h 10m
China Airlines
Deal found 4/23![China Airlines logo]()
$1,008
This oojo deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/412:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Fri 5/225:30 pm
SGN
- ONT
1 stop38h 30m
China Airlines
Deal found 4/27![China Airlines logo]()
$1,033
This Delta deal was found by Cheapflights users on 4/25. 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 5/57:00 am
ONT
- SGN
2 stops25h 10m
Delta
Thu 5/287:30 am
SGN
- ONT
2 stops23h 40m
Delta
Deal found 4/25![Delta logo]()
$1,034
This Justfly.com deal was found by Cheapflights users on 4/25. 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.
Tue 5/512:10 am
ONT
- SGN
1 stop19h 30m
China Airlines
Mon 11/165:50 pm
SGN
- ONT
1 stop38h 00m
China Airlines
Deal found 4/25![China Airlines logo]()
$1,036
One-way flights from Ontario to VietnamSearch for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
This CrystalTravel deal was found by Cheapflights users on 4/26. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:10 pm
ONT
- SGN
1 stop21h 05m
STARLUX Airlines
Deal found 4/26![STARLUX Airlines logo]()
$539
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/46:00 am
ONT
- SGN
2 stops26h 10m
Delta
Deal found 4/27![Delta logo]()
$545
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
ONT
- HAN
2 stops25h 35m
Delta
Deal found 4/26![Delta logo]()
$545
This SmartFares deal was found by Cheapflights users on 4/25. 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.
Sun 5/37:00 am
ONT
- SGN
2 stops26h 15m
Korean Air
Deal found 4/25![Korean Air logo]()
$547
This Justfly.com deal was found by Cheapflights users on 4/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:39 am
ONT
- HAN
2 stops37h 16m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$547
This Korean Air deal was found by Cheapflights users on 4/24. 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 4/307:00 am
ONT
- SGN
2 stops25h 10m
Korean Air
Deal found 4/24![Korean Air logo]()
$548
This Korean Air deal was found by Cheapflights users on 4/25. 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.
Tue 9/157:00 am
ONT
- HAN
2 stops24h 35m
Korean Air
Deal found 4/25![Korean Air logo]()
$548
This oojo deal was found by Cheapflights users on 4/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:10 am
ONT
- SGN
1 stop26h 10m
China Airlines
Deal found 4/26![China Airlines logo]()
$553
This oojo deal was found by Cheapflights users on 4/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:10 pm
ONT
- SGN
1 stop27h 45m
STARLUX Airlines
Deal found 4/23![STARLUX Airlines logo]()
$556
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:05 pm
ONT
- HAN
2 stops51h 45m
Delta
Deal found 4/23![Delta logo]()
$558
This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/611:10 pm
ONT
- SGN
1 stop21h 05m
STARLUX Airlines
Deal found 4/27![STARLUX Airlines logo]()
$560
This oojo deal was found by Cheapflights users on 4/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:10 pm
ONT
- DAD
1 stop28h 25m
STARLUX Airlines
Deal found 4/23![STARLUX Airlines logo]()
$563
Find flight deals from Ontario to Vietnam
Keep the following information in mind while searching for Ontario to Vietnam flight deals. Data was last updated April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $786 (Delta) |
One-way from | $539 (CrystalTravel) |
Popular in | June |
Cheapest in | September |
Average price | $749 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Vietnam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Ontario to Vietnam that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Tue 5/5
7:00 am-10:10 pm
2 stops25h 10m
Ho Chi Minh City
Thu 5/28
7:30 am-5:10 pm
2 stops23h 40m
$1,034
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 5/4
11:10 pm-4:55 pm
1 stop27h 45m
Ho Chi Minh City
Mon 5/25
11:30 am-5:05 pm
1 stop19h 35m
$1,053
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Tue 5/5
12:10 am-9:40 am
1 stop19h 30m
Ho Chi Minh City
Wed 5/27
5:30 pm-6:00 pm
1 stop38h 30m
$1,077
OntarioHo Chi Minh City
ONT - SGN
ONTSGN
Ontario
Mon 5/4
12:10 am-4:20 pm
1 stop26h 10m
Ho Chi Minh City
Mon 5/25
5:30 pm-6:00 pm
1 stop38h 30m
$1,077
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Wed 9/30
12:10 pm-7:15 am
2 stops29h 05m
Hanoi Noibai
Thu 10/29
7:10 pm-6:13 pm
2 stops37h 03m
$1,107
OntarioDa Nang
ONT - DAD
ONTDAD
Ontario
Sat 8/22
12:45 am-4:30 pm
1 stop25h 45m
Da Nang
Thu 8/27
10:00 am-6:40 pm
1 stop22h 40m
$1,117
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Thu 10/22
12:10 am-4:50 pm
1 stop26h 40m
Hanoi Noibai
Wed 11/11
11:35 am-4:50 pm
1 stop20h 15m
$1,122
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sat 10/24
11:50 pm-4:30 pm
1 stop26h 40m
Hanoi Noibai
Wed 11/11
11:35 am-4:50 pm
1 stop20h 15m
$1,122
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Fri 10/23
7:00 am-9:35 pm
2 stops24h 35m
Hanoi Noibai
Tue 11/10
11:05 pm-5:17 pm
2 stops33h 12m
$1,160
OntarioHanoi
ONT - HAN
ONTHAN
Ontario
Sun 9/6
7:00 am-9:35 pm
2 stops24h 35m
Hanoi Noibai
Thu 9/10
11:10 pm-10:40 pm
2 stops37h 30m
$1,165
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-DAD
ONT-HAN
ONT-VCS
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-DAD
ONT-HAN
ONT-VCS
How far ahead should I book a flight from Ontario to Vietnam?
The best time to book flights from Ontario to Vietnam is 45 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.
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 February is currently the most expensive (average of $1,520). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Vietnam
Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated April 28, 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
8.9
Comfort
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Comfort
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Comfort
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Comfort
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Comfort
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
8.9
Comfort
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Related info for your journey
Find useful and relevant information for your journey from Ontario to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Vietnam
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Vietnam by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Vietnam by cabin class
Find flights from Ontario to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Vietnam flights
Browse other Ontario and Vietnam flight options. Last updated on April 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Vietnam flights
Consider these flights traveling from Ontario to Vietnam.
Fly to Vietnam regions
Consider these flights traveling to Vietnam regions.
Top 5 airlines flying from Ontario to Vietnam
Discover the top 5 airlines that operate flights from Ontario to Vietnam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$640 | Average$917 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$649 | Average$772 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$654 | Average$735 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$692 | Average$815 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$742 | Average$807 | FlexibilityNo cancel fee | On-timeN/A |