$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 Expedia 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 Expedia 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
Mon 9/71:45 am
HAN
- ORD
2 stops41h 15m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$679
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
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 3/9. 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 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.
Fri 4/246:00 am
MDW
- SGN
2 stops29h 15m
Delta
Fri 5/111:45 pm
SGN
- MDW
2 stops34h 43m
Delta
Deal found 3/9![Delta logo]()
$925
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.
Tue 9/812:30 am
ORD
- HAN
1 stop22h 35m
EVA Air
Sun 9/136:00 pm
HAN
- ORD
1 stop38h 45m
EVA Air
Deal found 3/9![EVA Air logo]()
$938
This Air India 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 Air India is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/232:30 pm
ORD
- SGN
1 stop41h 25m
Air India
Thu 5/148:55 pm
SGN
- ORD
1 stop26h 15m
Air India
Deal found 3/9![Air India logo]()
$957
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 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 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 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 BusinessClass 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:55 am
MLI
- HAN
2 stops27h 40m
Korean Air
Sat 5/212:05 pm
HAN
- MLI
3 stops70h 30m
Korean Air
Deal found 3/11![Korean Air logo]()
$1,512
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 9/16:14 am
STL
- SGN
3 stops27h 51m
United Airlines
Wed 9/167:00 am
SGN
- STL
3 stops25h 39m
United Airlines
Deal found 3/8![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 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 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.
Sun 4/265:59 pm
STL
- SGN
2 stops41h 16m
Delta
Thu 5/147:30 am
SGN
- STL
2 stops27h 51m
Delta
Deal found 3/8![Delta logo]()
$968
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.
Tue 5/54:44 pm
STL
- SGN
3 stops41h 21m
United Airlines
Thu 5/217:00 am
SGN
- STL
3 stops28h 57m
United Airlines
Deal found 3/9![United Airlines logo]()
$818
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 China 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:55 pm
ORD
- DAD
3 stops37h 35m
Multiple Airlines
Mon 10/55:30 pm
DAD
- ORD
2 stops25h 30m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,082
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 4/68:35 pm
ORD
- DAD
2 stops37h 15m
Emirates
Mon 4/2011:30 pm
DAD
- ORD
2 stops28h 15m
Emirates
Deal found 3/12![Emirates logo]()
$1,109
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 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.
Sat 5/25:28 pm
STL
- SGN
3 stops40h 37m
United Airlines
Thu 5/217:00 am
SGN
- STL
2 stops23h 17m
United Airlines
Deal found 3/9![United Airlines logo]()
$860
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:30 am
ORD
- SGN
2 stops52h 40m
Delta
Wed 4/221:55 pm
SGN
- ORD
2 stops46h 03m
Delta
Deal found 3/12![Delta logo]()
$981
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 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.
Fri 4/106:34 pm
MDW
- SGN
2 stops40h 41m
Delta
Wed 4/221:55 pm
SGN
- MDW
2 stops44h 33m
Delta
Deal found 3/10![Delta logo]()
$981
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/95:48 am
ORD
- SGN
3 stops28h 17m
United Airlines
Wed 4/227:00 am
SGN
- ORD
3 stops29h 30m
United Airlines
Deal found 3/7![United Airlines logo]()
$894
This China 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:55 pm
MDW
- SGN
2 stops29h 45m
Multiple Airlines
Sun 5/35:30 pm
SGN
- MDW
2 stops24h 10m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$1,111
This Emirates 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:45 pm
ORD
- SGN
1 stop34h 50m
Emirates
Wed 4/225:10 pm
SGN
- ORD
1 stop34h 35m
Emirates
Deal found 3/9![Emirates logo]()
$1,238
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.
Sat 5/94:44 pm
STL
- SGN
3 stops41h 21m
United Airlines
Fri 5/227:00 am
SGN
- STL
3 stops28h 57m
United Airlines
Deal found 3/8![United Airlines logo]()
$918
This China 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:35 pm
MDW
- SGN
3 stops29h 05m
Multiple Airlines
Fri 5/15:30 pm
SGN
- MDW
2 stops24h 10m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,113
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.
Thu 4/239:27 am
MDW
- SGN
2 stops24h 43m
Delta
Thu 4/3011:45 pm
SGN
- MDW
2 stops28h 41m
Delta
Deal found 3/8![Delta logo]()
$1,059
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.
Wed 4/228:45 pm
STL
- HAN
2 stops32h 05m
Multiple Airlines
Wed 4/2911:30 am
HAN
- STL
2 stops21h 40m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$1,118
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.
Sun 4/2611:03 pm
ORD
- SGN
3 stops35h 02m
United Airlines
Sun 5/37:00 am
SGN
- ORD
2 stops26h 41m
United Airlines
Deal found 3/12![United Airlines logo]()
$945
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 4/269:10 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 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
Fri 5/157:00 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 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
Fri 5/157:00 am
SGN
- STL
3 stops28h 57m
United Airlines
Deal found 3/8![United Airlines logo]()
$877
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
Sun 5/3
8:30 pm-10:05 pm
3 stops37h 35m
Ho Chi Minh City
Thu 5/21
7:00 am-9:16 pm
2 stops26h 16m
$810
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 9/1
6:14 am-10:05 pm
3 stops27h 51m
Ho Chi Minh City
Wed 9/16
7:00 am-8:39 pm
3 stops25h 39m
$818
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
Tue 5/5
4:44 pm-10:05 pm
3 stops41h 21m
Ho Chi Minh City
Thu 5/21
7:00 am-11:57 pm
3 stops28h 57m
$818
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sat 5/2
5:28 pm-10:05 pm
3 stops40h 37m
Ho Chi Minh City
Thu 5/21
7:00 am-6:17 pm
2 stops23h 17m
$860
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Thu 4/9
5:48 am-10:05 pm
3 stops28h 17m
Ho Chi Minh City
Wed 4/22
7:00 am-12:30 am
3 stops29h 30m
$894
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sat 5/9
4:44 pm-10:05 pm
3 stops41h 21m
Ho Chi Minh City
Fri 5/22
7:00 am-11:57 pm
3 stops28h 57m
$918
ChicagoHo Chi Minh City
MDW - SGN
MDWSGN
Chicago Midway
Fri 4/24
6:00 am-11:15 pm
2 stops29h 15m
Ho Chi Minh City
Fri 5/1
11:45 pm-10:28 pm
2 stops34h 43m
$925
ChicagoHanoi
ORD - HAN
ORDHAN
Chicago O'Hare Intl
Tue 9/8
12:30 am-11:05 am
1 stop22h 35m
Hanoi Noibai
Sun 9/13
6:00 pm-8:45 pm
1 stop38h 45m
$938
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Sun 4/26
11:03 pm-10:05 pm
3 stops35h 02m
Ho Chi Minh City
Sun 5/3
7:00 am-9:41 pm
2 stops26h 41m
$945
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
MDW-SGN
ORD-SGN
STL-HAN
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
MDW-SGN
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.
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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% |