$396+ Cheap flights from Illinois 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SGN
Apr 12 — Apr 191
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Vietnam with Cheapflights
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Cheapest flights from Illinois to VietnamExplore the most affordable flight options available from Illinois to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
Explore the most affordable flight options available from Illinois to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
This Orbitz deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:55 pm
ORD
- HAN
2 stops31h 20m
Multiple Airlines
Tue 9/221:45 am
HAN
- ORD
2 stops41h 15m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$678
This ScholarTrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 11/32:35 pm
ORD
- HAN
1 stop38h 55m
Cathay Pacific
Tue 11/107:30 pm
HAN
- ORD
1 stop30h 25m
Cathay Pacific
Deal found 3/9![Cathay Pacific logo]()
$798
This FlightHub deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:16 am
STL
- SGN
2 stops24h 39m
ANA
Wed 9/1611:15 pm
SGN
- STL
2 stops25h 34m
ANA
Deal found 3/8![ANA logo]()
$801
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/236:00 am
STL
- SGN
3 stops28h 05m
United Airlines
Wed 5/67:00 am
SGN
- STL
3 stops38h 30m
United Airlines
Deal found 3/8![United Airlines logo]()
$806
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/269:10 am
STL
- SGN
3 stops48h 55m
United Airlines
Wed 5/1311:15 pm
SGN
- STL
2 stops33h 58m
United Airlines
Deal found 3/8![United Airlines logo]()
$807
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 5/38:30 pm
STL
- SGN
3 stops37h 35m
United Airlines
Thu 5/217:00 am
SGN
- STL
2 stops26h 16m
United Airlines
Deal found 3/9![United Airlines logo]()
$810
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/278:30 am
STL
- SGN
2 stops25h 35m
United Airlines
Wed 5/1311:15 pm
SGN
- STL
2 stops33h 58m
United Airlines
Deal found 3/8![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/269:10 am
STL
- SGN
3 stops48h 55m
United Airlines
Mon 5/117:00 am
SGN
- STL
3 stops45h 39m
United Airlines
Deal found 3/8![United Airlines logo]()
$818
This BusinessClass deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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.
Mon 5/48:30 pm
STL
- SGN
2 stops37h 35m
ANA
Wed 5/2011:15 pm
SGN
- STL
2 stops31h 02m
ANA
Deal found 3/9![ANA logo]()
$829
This KAYAK deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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.
Wed 8/264:00 pm
ORD
- HAN
1 stop38h 10m
Cathay Pacific
Tue 9/157:10 pm
HAN
- ORD
1 stop30h 45m
Cathay Pacific
Deal found 3/11![Cathay Pacific logo]()
$840
This BusinessClass deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Tue 4/286:30 am
STL
- SGN
2 stops27h 35m
Multiple Airlines
Tue 5/127:00 am
SGN
- STL
2 stops26h 13m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$840
This ScholarTrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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.
Thu 4/304:15 pm
ORD
- HAN
1 stop29h 40m
Cathay Pacific
Fri 5/157:10 pm
HAN
- ORD
1 stop30h 45m
Cathay Pacific
Deal found 3/9![Cathay Pacific logo]()
$848
Best flights from Illinois to VietnamDiscover carefully curated flight deals from Illinois to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
Discover carefully curated flight deals from Illinois to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/236:00 am
STL
- SGN
3 stops28h 05m
United Airlines
Wed 5/67:00 am
SGN
- STL
3 stops38h 30m
United Airlines
Deal found 3/8![United Airlines logo]()
$806
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 4/99:30 am
MDW
- SGN
2 stops25h 45m
Delta
Wed 4/221:55 pm
SGN
- MDW
2 stops44h 33m
Delta
Deal found 3/10![Delta logo]()
$925
This oojo deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
STL
- HAN
2 stops47h 40m
Cathay Pacific
Fri 9/47:10 pm
HAN
- STL
2 stops39h 58m
Cathay Pacific
Deal found 3/11![Cathay Pacific logo]()
$974
This Etihad Airways deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:00 pm
ORD
- HAN
1 stop28h 40m
Etihad Airways
Tue 4/218:40 pm
HAN
- ORD
1 stop23h 55m
Etihad Airways
Deal found 3/9![Etihad Airways logo]()
$1,048
This Korean Air deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 8/189:30 am
ORD
- SGN
2 stops24h 40m
Korean Air
Mon 9/71:55 pm
SGN
- ORD
1 stop31h 35m
Korean Air
Deal found 3/9![Korean Air logo]()
$1,049
This China Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 5/23:20 pm
MDW
- SGN
2 stops30h 20m
Multiple Airlines
Thu 5/710:50 am
SGN
- MDW
2 stops30h 50m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$1,052
This Emirates deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:35 pm
ORD
- DAD
2 stops37h 15m
Emirates
Wed 4/2211:30 pm
DAD
- ORD
2 stops28h 15m
Emirates
Deal found 3/10![Emirates logo]()
$1,108
This EVA Air deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:30 am
ORD
- DAD
1 stop23h 05m
EVA Air
Mon 9/712:55 pm
DAD
- ORD
2 stops28h 44m
EVA Air
Deal found 3/9![EVA Air logo]()
$1,123
This oojo deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:00 am
STL
- HAN
2 stops25h 50m
Japan Airlines
Sat 5/211:20 pm
HAN
- STL
2 stops24h 27m
Japan Airlines
Deal found 3/10![Japan Airlines logo]()
$1,158
This American Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:15 am
MLI
- HAN
2 stops28h 35m
American Airlines
Sat 5/211:20 pm
HAN
- MLI
2 stops30h 47m
American Airlines
Deal found 3/11![American Airlines logo]()
$1,207
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 5/45:28 pm
STL
- SGN
3 stops40h 37m
United Airlines
Wed 5/207:00 am
SGN
- STL
3 stops37h 41m
United Airlines
Deal found 3/9![United Airlines logo]()
$818
This oojo deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 7/16:00 am
STL
- DAD
2 stops45h 20m
Philippine Airlines
Thu 8/62:10 pm
DAD
- STL
2 stops35h 45m
Philippine Airlines
Deal found 3/9![Philippine Airlines logo]()
$1,700
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
MDW
- SGN
2 stops29h 15m
Delta
Sat 9/1211:45 pm
SGN
- MDW
2 stops24h 09m
Delta
Deal found 3/11![Delta logo]()
$925
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/67:05 pm
STL
- SGN
2 stops39h 00m
United Airlines
Wed 4/227:00 am
SGN
- STL
3 stops25h 54m
United Airlines
Deal found 3/9![United Airlines logo]()
$909
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:10 pm
MDW
- SGN
2 stops46h 05m
Delta
Mon 4/201:55 pm
SGN
- MDW
2 stops54h 51m
Delta
Deal found 3/10![Delta logo]()
$937
This China Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 8/226:00 pm
MDW
- HAN
2 stops28h 30m
Multiple Airlines
Wed 9/211:30 am
HAN
- MDW
2 stops30h 20m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$1,077
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 9/912:00 pm
ORD
- SGN
1 stop21h 55m
United Airlines
Sun 9/137:00 am
SGN
- ORD
2 stops28h 10m
United Airlines
Deal found 3/11![United Airlines logo]()
$937
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:00 am
MDW
- SGN
2 stops29h 15m
Delta
Mon 4/1311:45 pm
SGN
- MDW
2 stops34h 43m
Delta
Deal found 3/8![Delta logo]()
$972
This Emirates deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:35 pm
ORD
- DAD
2 stops37h 15m
Emirates
Sun 4/1911:30 pm
DAD
- ORD
2 stops52h 15m
Emirates
Deal found 3/12![Emirates logo]()
$1,184
This China Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:10 am
MDW
- SGN
2 stops35h 30m
Multiple Airlines
Mon 4/2710:50 am
SGN
- MDW
2 stops30h 50m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$1,077
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 9/212:15 pm
ORD
- SGN
1 stop21h 40m
United Airlines
Sat 9/197:00 am
SGN
- ORD
2 stops26h 24m
United Airlines
Deal found 3/12![United Airlines logo]()
$937
This Korean Air deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 9/99:20 am
MDW
- SGN
2 stops39h 15m
Korean Air
Sun 9/137:30 am
SGN
- MDW
2 stops41h 00m
Korean Air
Deal found 3/9![Korean Air logo]()
$1,290
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:15 am
ORD
- SGN
2 stops26h 55m
Delta
Mon 4/277:30 am
SGN
- ORD
2 stops41h 53m
Delta
Deal found 3/10![Delta logo]()
$985
This China Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 8/176:25 am
STL
- HAN
3 stops40h 05m
Multiple Airlines
Fri 9/411:30 am
HAN
- STL
2 stops24h 20m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$1,103
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 4/195:48 am
ORD
- SGN
3 stops28h 17m
United Airlines
Mon 5/117:00 am
SGN
- ORD
3 stops28h 57m
United Airlines
Deal found 3/11![United Airlines logo]()
$945
This Emirates deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:35 pm
ORD
- HAN
1 stop28h 40m
Emirates
Sun 4/191:15 am
HAN
- ORD
1 stop26h 30m
Emirates
Deal found 3/12![Emirates logo]()
$1,307
This China Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 5/66:50 pm
MDW
- HAN
2 stops27h 40m
Multiple Airlines
Wed 6/35:50 pm
HAN
- MDW
2 stops23h 50m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$1,106
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 5/47:00 am
STL
- SGN
2 stops41h 35m
Delta
Fri 5/157:30 am
SGN
- STL
2 stops28h 29m
Delta
Deal found 3/9![Delta logo]()
$1,052
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:09 pm
STL
- SGN
3 stops38h 56m
United Airlines
Tue 6/27:00 am
SGN
- STL
3 stops28h 57m
United Airlines
Deal found 3/8![United Airlines logo]()
$960
This China Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/1111:00 am
MDW
- SGN
2 stops34h 40m
Multiple Airlines
Sun 6/145:30 pm
SGN
- MDW
2 stops29h 40m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$1,111
Last-minute flights from Illinois to VietnamDiscover last-minute flight deals from Illinois to Vietnam. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Vietnam. Data last updated March 13, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 3/181:00 pm
ORD
- HAN
1 stop29h 00m
Etihad Airways
Tue 3/318:40 pm
HAN
- ORD
1 stop23h 55m
Etihad Airways
Deal found 3/12![Etihad Airways logo]()
$860
This ScholarTrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:15 pm
ORD
- HAN
1 stop29h 40m
Cathay Pacific
Wed 4/1510:55 am
HAN
- ORD
1 stop39h 00m
Cathay Pacific
Deal found 3/9![Cathay Pacific logo]()
$873
This ScholarTrip deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:15 pm
ORD
- HAN
1 stop29h 40m
Cathay Pacific
Wed 5/610:55 am
HAN
- ORD
1 stop39h 00m
Cathay Pacific
Deal found 3/10![Cathay Pacific logo]()
$798
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/236:00 am
STL
- SGN
3 stops28h 05m
United Airlines
Wed 5/67:00 am
SGN
- STL
3 stops38h 30m
United Airlines
Deal found 3/8![United Airlines logo]()
$806
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/269:10 am
STL
- SGN
3 stops48h 55m
United Airlines
Wed 5/1311:15 pm
SGN
- STL
2 stops33h 58m
United Airlines
Deal found 3/8![United Airlines logo]()
$807
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/266:55 pm
STL
- SGN
3 stops39h 10m
United Airlines
Thu 5/147:00 am
SGN
- STL
3 stops37h 39m
United Airlines
Deal found 3/8![United Airlines logo]()
$818
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/268:15 pm
STL
- SGN
3 stops37h 50m
United Airlines
Mon 5/117:00 am
SGN
- STL
2 stops34h 47m
United Airlines
Deal found 3/8![United Airlines logo]()
$827
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/268:15 pm
STL
- SGN
3 stops37h 50m
United Airlines
Sun 5/107:00 am
SGN
- STL
3 stops25h 43m
United Airlines
Deal found 3/8![United Airlines logo]()
$868
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/278:30 am
STL
- SGN
2 stops25h 35m
United Airlines
Wed 5/1311:15 pm
SGN
- STL
2 stops33h 58m
United Airlines
Deal found 3/8![United Airlines logo]()
$811
This BusinessClass deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Tue 4/286:30 am
STL
- SGN
2 stops27h 35m
Multiple Airlines
Tue 5/127:00 am
SGN
- STL
2 stops26h 13m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$840
This ScholarTrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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.
Thu 4/304:15 pm
ORD
- HAN
1 stop29h 40m
Cathay Pacific
Fri 5/157:10 pm
HAN
- ORD
1 stop30h 45m
Cathay Pacific
Deal found 3/9![Cathay Pacific logo]()
$848
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/308:30 pm
STL
- SGN
3 stops37h 35m
United Airlines
Wed 5/1311:15 pm
SGN
- STL
2 stops33h 58m
United Airlines
Deal found 3/8![United Airlines logo]()
$857
One-way flights from Illinois to VietnamSearch for one-way flight options from Illinois to Vietnam. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
Search for one-way flight options from Illinois to Vietnam. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
This oojo deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” 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 5/106:00 am
ORD
- DAD
2 stops43h 10m
Philippine Airlines
Deal found 3/11![Philippine Airlines logo]()
$396
This FlightHub deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/61:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Deal found 3/12![Air India logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Thu 4/165:15 am
ORD
- HAN
2 stops45h 25m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Wed 4/152:09 pm
ORD
- HAN
2 stops35h 26m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$439
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/147:30 am
MDW
- HAN
2 stops40h 45m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$445
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/146:01 pm
ORD
- HAN
2 stops30h 14m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$446
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Fri 4/1712:47 pm
ORD
- DAD
2 stops47h 43m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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.
Mon 5/48:58 pm
ORD
- HAN
3 stops51h 17m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Thu 4/165:15 am
ORD
- DAD
3 stops47h 15m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Fri 4/1712:47 pm
ORD
- HAN
2 stops46h 58m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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.
Mon 4/136:00 am
ORD
- HAN
2 stops52h 00m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$468
This oojo deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 7/127:15 am
STL
- SGN
2 stops34h 10m
Japan Airlines
Deal found 3/8![Japan Airlines logo]()
$468
Find flight deals from Illinois to Vietnam
Keep the following information in mind while searching for Illinois to Vietnam flight deals. Data was last updated March 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $678 (Orbitz) |
One-way from | $396 (oojo) |
Popular in | June |
Cheapest in | September |
Average price | $1,057 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois 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 March 13, 2026.
Use the filters below to find and compare flights from Illinois to Vietnam that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Thu 4/23
6:00 am-10:05 pm
3 stops28h 05m
Ho Chi Minh City
Wed 5/6
7:00 am-9:30 am
3 stops38h 30m
$806
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Mon 5/4
5:28 pm-10:05 pm
3 stops40h 37m
Ho Chi Minh City
Wed 5/20
7:00 am-8:41 am
3 stops37h 41m
$818
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Mon 4/6
7:05 pm-10:05 pm
2 stops39h 00m
Ho Chi Minh City
Wed 4/22
7:00 am-8:54 pm
3 stops25h 54m
$909
ChicagoHo Chi Minh City
MDW - SGN
MDWSGN
Chicago Midway
Thu 4/9
9:30 am-11:15 pm
2 stops25h 45m
Ho Chi Minh City
Wed 4/22
1:55 pm-10:28 pm
2 stops44h 33m
$925
ChicagoHo Chi Minh City
MDW - SGN
MDWSGN
Chicago Midway
Sat 9/5
6:00 am-11:15 pm
2 stops29h 15m
Ho Chi Minh City
Sat 9/12
11:45 pm-11:54 am
2 stops24h 09m
$925
ChicagoHo Chi Minh City
MDW - SGN
MDWSGN
Chicago Midway
Tue 4/7
1:10 pm-11:15 pm
2 stops46h 05m
Ho Chi Minh City
Mon 4/20
1:55 pm-8:46 am
2 stops54h 51m
$937
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Wed 9/9
12:00 pm-9:55 pm
1 stop21h 55m
Ho Chi Minh City
Sun 9/13
7:00 am-11:10 pm
2 stops28h 10m
$937
Quickest round-trip
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Wed 9/2
12:15 pm-9:55 pm
1 stop21h 40m
Ho Chi Minh City
Sat 9/19
7:00 am-9:24 pm
2 stops26h 24m
$937
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Sun 4/19
5:48 am-10:05 pm
3 stops28h 17m
Ho Chi Minh City
Mon 5/11
7:00 am-11:57 pm
3 stops28h 57m
$945
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 5/12
7:09 pm-10:05 pm
3 stops38h 56m
Ho Chi Minh City
Tue 6/2
7:00 am-11:57 pm
3 stops28h 57m
$960
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Vietnam
Have a flexible travel schedule? Discover the best time to fly to Vietnam from Illinois with our price prediction graph.
ORD-HAN
STL-SGN
ORD-DAD
ORD-SGN
MDW-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 Illinois to Vietnam
USIL-VN0
ORD-HAN
STL-SGN
ORD-DAD
ORD-SGN
What is the cheapest month to book a flight from Illinois to Vietnam?
Currently, September is the cheapest month in which you can book a flight from Illinois to Vietnam (average of $633). Flying from Illinois to Vietnam in June is currently the most expensive (average of $1,002). 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.
Related info for your journey
Find useful and relevant information for your journey from Illinois 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
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Top regions
Alternative routes for Illinois 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 Illinois to Vietnam by cabin class
Find flights from Illinois to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Vietnam flights
Browse other Illinois and Vietnam flight options. Last updated on March 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Vietnam
Find the right flight back to Illinois after your stay in Vietnam
Illinois to Vietnam flights
Consider these flights traveling from Illinois to Vietnam.
Fly to Vietnam regions
Consider these flights traveling to Vietnam regions.
Top 10 airlines flying from Illinois to Vietnam
Discover the top 10 airlines that operate flights from Illinois 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 March 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$597 | Average$908 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$632 | Average$815 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$665 | Average$933 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$681 | Average$1,283 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$709 | Average$1,106 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$768 | Average$1,029 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$769 | Average$1,089 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$791 | Average$1,158 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$801 | Average$1,040 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$886 | Average$1,255 | FlexibilityNo cancel fee | On-time74% |