$438+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SGN
Jun 9 — Jun 161
Round-trip
1 adult, Economy
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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 May 10, 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 May 10, 2026.
This FlightHub deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/231:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Sun 10/118:20 am
HAN
- ORD
2 stops38h 50m
Air India
Deal found 5/5![Air India logo]()
$938
This oojo deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/21:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Sat 9/128:20 am
HAN
- ORD
2 stops38h 50m
Air India
Deal found 5/5![Air India logo]()
$944
This KAYAK deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/94:00 pm
ORD
- HAN
1 stop38h 10m
Cathay Pacific
Wed 9/2310:55 am
HAN
- ORD
1 stop39h 00m
Cathay Pacific
Deal found 5/5![Cathay Pacific logo]()
$951
This Ovago deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:15 pm
ORD
- HAN
1 stop37h 55m
Cathay Pacific
Sun 11/17:30 pm
HAN
- ORD
1 stop30h 25m
Cathay Pacific
Deal found 5/5![Cathay Pacific logo]()
$952
This ScholarTrip deal was found by Cheapflights users on 5/9. 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 11/1011:05 am
HAN
- ORD
1 stop38h 50m
Cathay Pacific
Deal found 5/9![Cathay Pacific logo]()
$954
This oojo deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 9/41:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Sun 9/208:20 am
HAN
- ORD
2 stops38h 50m
Air India
Deal found 5/6![Air India logo]()
$955
This oojo deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:35 pm
ORD
- HAN
1 stop38h 55m
Cathay Pacific
Wed 12/167:30 pm
HAN
- ORD
1 stop30h 25m
Cathay Pacific
Deal found 5/5![Cathay Pacific logo]()
$957
This BusinessClass deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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.
Wed 9/94:00 pm
ORD
- DAD
1 stop37h 25m
Cathay Pacific
Mon 9/1411:50 am
DAD
- ORD
1 stop38h 30m
Cathay Pacific
Deal found 5/5![Cathay Pacific logo]()
$959
This FlightHub deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/24:00 pm
ORD
- HAN
1 stop35h 35m
Cathay Pacific
Wed 9/910:55 am
HAN
- ORD
1 stop39h 25m
Cathay Pacific
Deal found 5/5![Cathay Pacific logo]()
$959
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:25 pm
ORD
- SGN
1 stop40h 25m
United Airlines
Thu 11/267:30 am
SGN
- ORD
2 stops24h 24m
United Airlines
Deal found 5/5![United Airlines logo]()
$962
This KAYAK deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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.
Thu 9/244:15 pm
ORD
- HAN
1 stop35h 20m
Cathay Pacific
Thu 10/1510:55 am
HAN
- ORD
1 stop39h 00m
Cathay Pacific
Deal found 5/6![Cathay Pacific logo]()
$963
This oojo deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/61:10 pm
ORD
- SGN
1 stop42h 45m
Air India
Tue 7/148:55 pm
SGN
- ORD
2 stops26h 15m
Air India
Deal found 5/5![Air India logo]()
$963
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 May 10, 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 May 10, 2026.
This Korean Air deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/1012:10 pm
ORD
- PQC
1 stop22h 40m
Korean Air
Sun 9/1312:10 am
PQC
- ORD
1 stop21h 20m
Korean Air
Deal found 5/5![Korean Air logo]()
$1,046
This FlightHub deal was found by Cheapflights users on 5/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 am
STL
- HAN
2 stops42h 55m
Multiple Airlines
Tue 11/37:10 pm
HAN
- STL
2 stops41h 49m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,071
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 9/165:10 am
STL
- SGN
3 stops28h 55m
United Airlines
Wed 10/711:15 pm
SGN
- STL
2 stops37h 19m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,073
This Emirates deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 8/38:35 pm
ORD
- DAD
2 stops37h 15m
Emirates
Wed 8/2611:30 pm
DAD
- ORD
2 stops28h 15m
Emirates
Deal found 5/6![Emirates logo]()
$1,172
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/177:12 am
ORD
- SGN
2 stops28h 03m
Delta
Thu 5/287:30 am
SGN
- ORD
2 stops28h 27m
Delta
Deal found 5/5![Delta logo]()
$1,389
This FlightHub deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/2711:25 am
ORD
- DAD
2 stops36h 40m
Turkish Airlines
Wed 6/1012:50 pm
DAD
- ORD
2 stops32h 50m
Turkish Airlines
Deal found 5/5![Turkish Airlines logo]()
$1,474
This Etihad Airways deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/302:00 pm
ORD
- HAN
1 stop28h 40m
Etihad Airways
Sun 8/28:40 pm
HAN
- ORD
1 stop23h 55m
Etihad Airways
Deal found 5/5![Etihad Airways logo]()
$1,512
This Qatar Airways deal was found by Cheapflights users on 5/9. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:47 am
STL
- HAN
2 stops40h 08m
Qatar Airways
Fri 10/237:30 pm
HAN
- STL
2 stops39h 55m
Qatar Airways
Deal found 5/9![Qatar Airways logo]()
$1,571
This KAYAK deal was found by Cheapflights users on 5/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:00 pm
ORD
- DAD
1 stop31h 05m
Cathay Pacific
Sat 7/1111:50 am
DAD
- ORD
1 stop38h 30m
Cathay Pacific
Deal found 5/9![Cathay Pacific logo]()
$1,732
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 9/85:10 am
STL
- SGN
3 stops28h 55m
United Airlines
Mon 10/1211:15 pm
SGN
- STL
2 stops30h 54m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,073
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 10/156:15 am
STL
- SGN
2 stops27h 40m
United Airlines
Sun 10/2511:05 pm
SGN
- STL
3 stops52h 33m
United Airlines
Deal found 5/5![United Airlines logo]()
$1,084
This Malaysia Airlines deal was found by Cheapflights users on 5/9. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am
STL
- HAN
3 stops41h 45m
Malaysia Airlines
Tue 11/31:00 pm
HAN
- STL
3 stops47h 42m
Malaysia Airlines
Deal found 5/9![Malaysia Airlines logo]()
$2,509
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 10/188:15 pm
STL
- SGN
3 stops37h 50m
United Airlines
Thu 10/227:00 am
SGN
- STL
3 stops27h 30m
United Airlines
Deal found 5/5![United Airlines logo]()
$1,084
This Emirates deal was found by Cheapflights users on 5/7. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:35 pm
ORD
- SGN
1 stop35h 25m
Emirates
Sat 8/295:10 pm
SGN
- ORD
1 stop34h 35m
Emirates
Deal found 5/7![Emirates logo]()
$1,370
This Korean Air deal was found by Cheapflights users on 5/9. 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.
Thu 10/2912:15 pm
ORD
- PQC
1 stop37h 45m
Korean Air
Mon 11/211:45 pm
PQC
- ORD
1 stop21h 45m
Korean Air
Deal found 5/9![Korean Air logo]()
$1,430
This Delta deal was found by Cheapflights users on 5/10. 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.
Wed 7/151:44 pm
ORD
- HAN
2 stops32h 51m
Delta
Wed 8/2611:10 pm
HAN
- ORD
2 stops34h 48m
Delta
Deal found 5/10![Delta logo]()
$1,451
This oojo deal was found by Cheapflights users on 5/9. 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 10/712:30 am
ORD
- PQC
2 stops45h 05m
Multiple Airlines
Sat 10/246:55 pm
PQC
- ORD
2 stops37h 40m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,462
This Etihad Airways deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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.
Thu 7/29:10 pm
ORD
- DAD
2 stops34h 40m
Etihad Airways
Sat 7/113:15 pm
DAD
- ORD
2 stops29h 20m
Etihad Airways
Deal found 5/5![Etihad Airways logo]()
$1,529
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Tue 9/155:00 am
STL
- SGN
3 stops29h 05m
United Airlines
Tue 10/2011:15 pm
SGN
- STL
2 stops31h 23m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,173
This Etihad Airways deal was found by Cheapflights users on 5/10. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:00 pm
ORD
- HAN
2 stops26h 40m
Multiple Airlines
Wed 8/268:40 pm
HAN
- ORD
1 stop23h 55m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,469
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/69:24 am
MDW
- HAN
2 stops24h 11m
Delta
Thu 8/2711:10 pm
HAN
- MDW
2 stops35h 26m
Delta
Deal found 5/5![Delta logo]()
$1,491
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Mon 8/245:10 am
STL
- SGN
3 stops28h 55m
United Airlines
Wed 9/3011:15 pm
SGN
- STL
2 stops29h 46m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,173
This IEagle deal was found by Cheapflights users on 5/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:25 am
ORD
- DAD
2 stops36h 40m
Turkish Airlines
Sun 6/712:50 pm
DAD
- ORD
2 stops32h 50m
Turkish Airlines
Deal found 5/8![Turkish Airlines logo]()
$1,754
This Emirates deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 8/58:35 pm
ORD
- HAN
1 stop28h 40m
Emirates
Fri 8/141:30 am
HAN
- ORD
1 stop26h 15m
Emirates
Deal found 5/5![Emirates logo]()
$1,595
This Delta deal was found by Cheapflights users on 5/9. 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.
Tue 5/129:23 am
MDW
- HAN
2 stops37h 27m
Delta
Sun 6/711:10 pm
HAN
- MDW
2 stops35h 07m
Delta
Deal found 5/9![Delta logo]()
$1,501
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/53:54 pm
ORD
- HAN
2 stops26h 46m
Multiple Airlines
Sun 7/198:40 pm
HAN
- ORD
1 stop23h 55m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,506
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/296:00 am
ORD
- SGN
2 stops28h 05m
United Airlines
Sat 8/297:00 am
SGN
- ORD
2 stops28h 10m
United Airlines
Deal found 5/5![United Airlines logo]()
$1,210
This Delta deal was found by Cheapflights users on 5/9. 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.
Tue 5/129:23 am
MDW
- HAN
2 stops24h 12m
Delta
Tue 6/912:05 pm
HAN
- MDW
2 stops32h 32m
Delta
Deal found 5/9![Delta logo]()
$1,506
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:00 pm
ORD
- HAN
2 stops26h 40m
Multiple Airlines
Sun 7/128:40 pm
HAN
- ORD
1 stop23h 55m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,509
This Delta deal was found by Cheapflights users on 5/9. 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.
Tue 5/129:23 am
MDW
- HAN
2 stops37h 27m
Delta
Wed 6/1012:05 pm
HAN
- MDW
2 stops32h 32m
Delta
Deal found 5/9![Delta logo]()
$1,508
Last-minute flights from Illinois to VietnamDiscover last-minute flight deals from Illinois to Vietnam. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Vietnam. Data last updated May 10, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 5/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:15 pm
ORD
- SGN
1 stop21h 40m
ANA
Thu 5/217:00 am
SGN
- ORD
1 stop19h 55m
ANA
Deal found 5/7![ANA logo]()
$1,061
This United Airlines deal was found by Cheapflights users on 5/7. 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 5/712:15 pm
ORD
- SGN
1 stop21h 40m
United Airlines
Thu 5/217:00 am
SGN
- ORD
2 stops29h 59m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,062
This United Airlines deal was found by Cheapflights users on 5/7. 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 5/712:15 pm
ORD
- SGN
1 stop21h 40m
United Airlines
Thu 5/287:00 am
SGN
- ORD
2 stops33h 58m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,087
This United Airlines deal was found by Cheapflights users on 5/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:00 am
ORD
- SGN
2 stops26h 55m
United Airlines
Wed 5/2711:15 pm
SGN
- ORD
2 stops35h 52m
United Airlines
Deal found 5/10![United Airlines logo]()
$1,064
This United Airlines deal was found by Cheapflights users on 5/9. 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 5/117:09 pm
STL
- SGN
3 stops38h 56m
United Airlines
Mon 5/2511:15 pm
SGN
- STL
2 stops24h 56m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/127:00 am
ORD
- SGN
2 stops27h 05m
United Airlines
Thu 5/217:00 am
SGN
- ORD
2 stops29h 59m
United Airlines
Deal found 5/5![United Airlines logo]()
$966
This BusinessClass deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/127:00 am
ORD
- SGN
1 stop27h 05m
ANA
Thu 5/217:00 am
SGN
- ORD
2 stops24h 05m
ANA
Deal found 5/5![ANA logo]()
$1,019
This Ovago deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 am
ORD
- SGN
1 stop27h 05m
Multiple Airlines
Thu 5/217:00 am
SGN
- ORD
1 stop24h 05m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,025
This Mytrip deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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.
Wed 5/1312:30 am
ORD
- SGN
2 stops33h 30m
Multiple Airlines
Fri 5/229:00 am
SGN
- ORD
2 stops24h 00m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,004
This FlightHub deal was found by Cheapflights users on 5/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/218:10 pm
ORD
- HAN
1 stop31h 30m
Turkish Airlines
Wed 7/810:55 pm
HAN
- ORD
1 stop22h 45m
Turkish Airlines
Deal found 5/7![Turkish Airlines logo]()
$1,154
This Gotogate deal was found by Cheapflights users on 5/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:10 pm
ORD
- HAN
1 stop21h 30m
Etihad Airways
Thu 7/98:40 pm
HAN
- ORD
1 stop23h 55m
Etihad Airways
Deal found 5/7![Etihad Airways logo]()
$1,169
This IEagle deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/291:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Sun 7/58:20 am
HAN
- ORD
2 stops38h 50m
Air India
Deal found 5/6![Air India logo]()
$1,120
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 May 10, 2026.
Search for one-way flight options from Illinois to Vietnam. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This IEagle deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Deal found 5/5![Air India logo]()
$438
This Justfly.com deal was found by Cheapflights users on 5/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/271:10 pm
ORD
- SGN
1 stop42h 45m
Air India
Deal found 5/7![Air India logo]()
$478
This IEagle deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/51:10 pm
ORD
- HAN
1 stop30h 10m
Air India
Deal found 5/5![Air India logo]()
$500
This oojo deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/311:10 pm
ORD
- SGN
1 stop42h 45m
Air India
Deal found 5/5![Air India logo]()
$513
This oojo deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/64:00 pm
ORD
- HAN
1 stop29h 55m
Cathay Pacific
Deal found 5/5![Cathay Pacific logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:00 pm
ORD
- SGN
1 stop30h 05m
Cathay Pacific
Deal found 5/7![Cathay Pacific logo]()
$537
This IEagle deal was found by Cheapflights users on 5/7. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/21:10 pm
ORD
- SGN
1 stop42h 45m
Air India
Deal found 5/7![Air India logo]()
$561
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:46 pm
ORD
- SGN
2 stops55h 09m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$573
This KAYAK deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:00 am
STL
- HAN
2 stops27h 00m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$598
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/151:10 pm
ORD
- SGN
1 stop42h 45m
Air India
Deal found 5/7![Air India logo]()
$598
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:00 pm
ORD
- SGN
1 stop20h 20m
Cathay Pacific
Deal found 5/7![Cathay Pacific logo]()
$600
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/131:10 pm
ORD
- SGN
1 stop28h 55m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$601
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 May 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $938 (FlightHub) |
One-way from | $438 (IEagle) |
Popular in | June |
Cheapest in | September |
Average price | $1,217 |
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 May 10, 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
Quickest round-trip
ChicagoPhu Quoc
ORD - PQC
ORDPQC
Chicago O'Hare Intl
Thu 9/10
12:10 pm-10:50 pm
1 stop22h 40m
Phu Quoc Duong Dang
Sun 9/13
12:10 am-9:30 am
1 stop21h 20m
$1,046
St. LouisHanoi
STL - HAN
STLHAN
Lambert-St Louis
Tue 10/13
7:00 am-1:55 pm
2 stops42h 55m
Hanoi Noibai
Tue 11/3
7:10 pm-11:59 pm
2 stops41h 49m
$1,071
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Wed 9/16
5:10 am-10:05 pm
3 stops28h 55m
Ho Chi Minh City
Wed 10/7
11:15 pm-12:34 am
2 stops37h 19m
$1,073
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 9/8
5:10 am-10:05 pm
3 stops28h 55m
Ho Chi Minh City
Mon 10/12
11:15 pm-6:09 pm
2 stops30h 54m
$1,073
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Thu 10/15
6:15 am-9:55 pm
2 stops27h 40m
Ho Chi Minh City
Sun 10/25
11:05 pm-3:38 pm
3 stops52h 33m
$1,084
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sun 10/18
8:15 pm-10:05 pm
3 stops37h 50m
Ho Chi Minh City
Thu 10/22
7:00 am-10:30 pm
3 stops27h 30m
$1,084
ChicagoDa Nang
ORD - DAD
ORDDAD
Chicago O'Hare Intl
Mon 8/3
8:35 pm-9:50 pm
2 stops37h 15m
Da Nang
Wed 8/26
11:30 pm-3:45 pm
2 stops28h 15m
$1,172
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 9/15
5:00 am-10:05 pm
3 stops29h 05m
Ho Chi Minh City
Tue 10/20
11:15 pm-6:38 pm
2 stops31h 23m
$1,173
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Mon 8/24
5:10 am-10:05 pm
3 stops28h 55m
Ho Chi Minh City
Wed 9/30
11:15 pm-5:01 pm
2 stops29h 46m
$1,173
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Wed 7/29
6:00 am-10:05 pm
2 stops28h 05m
Ho Chi Minh City
Sat 8/29
7:00 am-11:10 pm
2 stops28h 10m
$1,210
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.
STL-HAN
ORD-DAD
ORD-SGN
ORD-HAN
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
STL-HAN
ORD-DAD
ORD-SGN
ORD-HAN
How far ahead should I book a flight from Illinois to Vietnam?
The price you pay for your flight from Illinois to Vietnam may vary depending on when you book. For the best chance of a lower fare, look to book 55 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Illinois to Vietnam?
Currently, August is the cheapest month in which you can book a flight from Illinois to Vietnam (average of $428). Flying from Illinois to Vietnam in November is currently the most expensive (average of $1,337). 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 May 10, 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 May 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$650 | Average$1,058 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$662 | Average$864 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$665 | Average$942 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$681 | Average$1,273 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$704 | Average$1,136 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$766 | Average$1,092 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$768 | Average$1,048 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$774 | Average$1,079 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$801 | Average$1,040 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$817 | Average$954 | FlexibilityNo cancel fee | On-time75% |