$450+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SGN
Aug 8 — Aug 151
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Illinois to Vietnam with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Vietnam
Cheapest
Best
Last-minute
One-way
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 July 9, 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 July 9, 2026.
This KAYAK deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:00 pm
ORD
- DAD
1 stop31h 05m
Cathay Pacific
Tue 9/296:10 pm
DAD
- ORD
1 stop31h 45m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$849
This KAYAK deal was found by Cheapflights users on 7/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:15 pm
ORD
- HAN
1 stop29h 40m
Cathay Pacific
Wed 10/2110:25 am
HAN
- ORD
1 stop39h 30m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$854
This KAYAK deal was found by Cheapflights users on 7/6. 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 10/84:15 pm
ORD
- HAN
1 stop37h 55m
Cathay Pacific
Wed 10/2110:25 am
HAN
- ORD
1 stop39h 30m
Cathay Pacific
Deal found 7/6![Cathay Pacific logo]()
$859
This oojo deal was found by Cheapflights users on 7/5. 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 11/182:35 pm
ORD
- PQC
1 stop38h 20m
Cathay Pacific
Wed 12/26:55 pm
PQC
- ORD
1 stop31h 00m
Cathay Pacific
Deal found 7/5![Cathay Pacific logo]()
$860
This ScholarTrip deal was found by Cheapflights users on 7/8. 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 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 7/8![Cathay Pacific logo]()
$899
This KAYAK deal was found by Cheapflights users on 7/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:00 pm
ORD
- HAN
1 stop35h 35m
Cathay Pacific
Sun 9/2010:55 am
HAN
- ORD
1 stop39h 00m
Cathay Pacific
Deal found 7/7![Cathay Pacific logo]()
$904
This oojo deal was found by Cheapflights users on 7/5. 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 10/84:15 pm
ORD
- PQC
1 stop29h 25m
Cathay Pacific
Sat 10/247:05 pm
PQC
- ORD
1 stop30h 50m
Cathay Pacific
Deal found 7/5![Cathay Pacific logo]()
$910
This oojo deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:00 pm
ORD
- PQC
1 stop38h 05m
Cathay Pacific
Mon 8/317:05 pm
PQC
- ORD
1 stop31h 15m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$934
This Gotogate deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:15 pm
ORD
- HAN
1 stop37h 55m
Cathay Pacific
Sun 10/187:10 pm
HAN
- ORD
1 stop30h 45m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$939
This Gotogate deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:15 pm
ORD
- HAN
1 stop29h 40m
Cathay Pacific
Sun 10/2511:05 am
HAN
- ORD
1 stop38h 50m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$942
This ScholarTrip deal was found by Cheapflights users on 7/9. 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 10/154:15 pm
ORD
- HAN
1 stop35h 20m
Cathay Pacific
Thu 10/2210:55 am
HAN
- ORD
1 stop39h 00m
Cathay Pacific
Deal found 7/9![Cathay Pacific logo]()
$949
This KAYAK deal was found by Cheapflights users on 7/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:15 pm
ORD
- HAN
1 stop35h 20m
Cathay Pacific
Sat 10/1010:25 am
HAN
- ORD
1 stop39h 30m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$954
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 July 9, 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 July 9, 2026.
This oojo deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:15 pm
ORD
- PQC
1 stop29h 25m
Cathay Pacific
Sat 10/247:05 pm
PQC
- ORD
1 stop30h 50m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$910
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Sun 8/29:30 pm
ORD
- SGN
2 stops36h 35m
United Airlines
Thu 9/107:00 am
SGN
- ORD
2 stops22h 05m
United Airlines
Deal found 7/7![United Airlines logo]()
$974
This Delta deal was found by Cheapflights users on 7/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:24 pm
ORD
- SGN
2 stops39h 46m
Delta
Sat 10/101:55 pm
SGN
- ORD
2 stops35h 06m
Delta
Deal found 7/7![Delta logo]()
$981
This KAYAK deal was found by Cheapflights users on 7/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:00 pm
ORD
- DAD
2 stops27h 05m
Multiple Airlines
Tue 10/2010:05 am
DAD
- ORD
1 stop39h 50m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,029
This Korean Air deal was found by Cheapflights users on 7/6. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:15 am
ORD
- PQC
1 stop37h 45m
Korean Air
Sun 11/83:30 pm
PQC
- ORD
1 stop30h 00m
Korean Air
Deal found 7/6![Korean Air logo]()
$1,142
This oojo deal was found by Cheapflights users on 7/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:16 am
STL
- HAN
2 stops56h 59m
Qatar Airways
Mon 9/217:30 pm
HAN
- STL
2 stops31h 14m
Qatar Airways
Deal found 7/7![Qatar Airways logo]()
$1,220
This oojo deal was found by Cheapflights users on 7/8. 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.
Thu 12/103:24 pm
STL
- DAD
2 stops36h 51m
STARLUX Airlines
Thu 1/146:25 pm
DAD
- STL
2 stops57h 01m
STARLUX Airlines
Deal found 7/8![STARLUX Airlines logo]()
$1,557
This Cathay Pacific deal was found by Cheapflights users on 7/8. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:15 pm
ORD
- PQC
1 stop37h 50m
Cathay Pacific
Mon 9/2110:40 am
PQC
- ORD
1 stop39h 15m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$967
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Sun 8/29:30 pm
ORD
- SGN
2 stops36h 35m
United Airlines
Tue 9/87:00 am
SGN
- ORD
2 stops25h 36m
United Airlines
Deal found 7/7![United Airlines logo]()
$983
This Delta deal was found by Cheapflights users on 7/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:30 pm
ORD
- SGN
1 stop22h 45m
Delta
Fri 8/281:55 pm
SGN
- ORD
2 stops34h 45m
Delta
Deal found 7/7![Delta logo]()
$1,021
This oojo deal was found by Cheapflights users on 7/5. 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 10/84:15 pm
ORD
- PQC
1 stop37h 50m
Multiple Airlines
Sat 10/2410:05 pm
PQC
- ORD
2 stops51h 50m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$1,043
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/48:48 am
ORD
- SGN
2 stops25h 17m
United Airlines
Sun 9/67:00 am
SGN
- ORD
1 stop19h 55m
United Airlines
Deal found 7/8![United Airlines logo]()
$1,006
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:30 pm
ORD
- PQC
1 stop22h 20m
Delta
Mon 8/2412:10 am
PQC
- ORD
2 stops35h 38m
Delta
Deal found 7/4![Delta logo]()
$1,049
This Korean Air deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:10 pm
ORD
- DAD
1 stop20h 55m
Korean Air
Thu 9/103:55 pm
DAD
- ORD
1 stop29h 35m
Korean Air
Deal found 7/4![Korean Air logo]()
$1,154
This Justfly.com deal was found by Cheapflights users on 7/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:29 am
STL
- SGN
2 stops43h 21m
Multiple Airlines
Wed 10/78:00 pm
SGN
- STL
2 stops39h 59m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$1,086
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:30 am
ORD
- SGN
3 stops28h 35m
United Airlines
Mon 8/247:00 am
SGN
- ORD
3 stops27h 46m
United Airlines
Deal found 7/4![United Airlines logo]()
$1,029
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:39 pm
MDW
- SGN
2 stops31h 56m
Delta
Mon 10/1211:45 pm
SGN
- MDW
2 stops30h 20m
Delta
Deal found 7/4![Delta logo]()
$1,055
This Trip.com deal was found by Cheapflights users on 7/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:45 pm
ORD
- PQC
2 stops28h 55m
Multiple Airlines
Wed 8/2611:45 am
PQC
- ORD
2 stops32h 55m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$1,094
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:59 am
MDW
- SGN
2 stops25h 16m
Delta
Sun 11/1511:50 pm
SGN
- MDW
2 stops25h 43m
Delta
Deal found 7/4![Delta logo]()
$1,055
This Korean Air deal was found by Cheapflights users on 7/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:10 pm
ORD
- PQC
1 stop22h 40m
Korean Air
Sun 9/2012:10 am
PQC
- ORD
2 stops24h 49m
Korean Air
Deal found 7/8![Korean Air logo]()
$1,294
This United Airlines deal was found by Cheapflights users on 7/5. 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 7/148:48 am
ORD
- SGN
2 stops25h 17m
United Airlines
Wed 7/227:00 am
SGN
- ORD
2 stops30h 15m
United Airlines
Deal found 7/5![United Airlines logo]()
$1,116
This FlightHub deal was found by Cheapflights users on 7/8. 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.
Mon 11/93:11 pm
STL
- HAN
2 stops50h 44m
Multiple Airlines
Mon 11/167:10 pm
HAN
- STL
2 stops56h 05m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,128
This Cathay Pacific deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:00 am
STL
- HAN
2 stops46h 30m
Cathay Pacific
Mon 11/167:30 pm
HAN
- STL
2 stops39h 59m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$1,394
This Korean Air deal was found by Cheapflights users on 7/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:20 pm
STL
- DAD
2 stops37h 45m
Korean Air
Thu 10/2210:55 pm
DAD
- STL
2 stops29h 28m
Korean Air
Deal found 7/8![Korean Air logo]()
$1,335
This Delta deal was found by Cheapflights users on 7/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:55 am
ORD
- DAD
2 stops24h 10m
Delta
Mon 9/1410:55 pm
DAD
- ORD
2 stops34h 00m
Delta
Deal found 7/6![Delta logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
1 stop19h 55m
United Airlines
Deal found 7/4![United Airlines logo]()
$1,118
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 8/115:10 pm
MDW
- DAD
2 stops39h 55m
Delta
Tue 10/2010:55 pm
DAD
- MDW
2 stops25h 53m
Delta
Deal found 7/8![Delta logo]()
$1,105
This Korean Air deal was found by Cheapflights users on 7/5. 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.
Sun 9/67:00 am
STL
- DAD
2 stops43h 20m
Korean Air
Thu 9/103:55 pm
DAD
- STL
2 stops40h 03m
Korean Air
Deal found 7/5![Korean Air logo]()
$1,379
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:00 am
ORD
- SGN
2 stops28h 05m
United Airlines
Mon 8/177:00 am
SGN
- ORD
3 stops38h 43m
United Airlines
Deal found 7/4![United Airlines logo]()
$1,141
This China Airlines deal was found by Cheapflights users on 7/7. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:20 pm
STL
- HAN
3 stops32h 10m
Multiple Airlines
Fri 8/2811:30 am
HAN
- STL
2 stops24h 20m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$1,330
Last-minute flights from Illinois to VietnamDiscover last-minute flight deals from Illinois to Vietnam. Data last updated July 9, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Vietnam. Data last updated July 9, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Sun 8/29:30 pm
ORD
- SGN
2 stops36h 35m
United Airlines
Wed 9/911:15 pm
SGN
- ORD
1 stop21h 25m
United Airlines
Deal found 7/6![United Airlines logo]()
$968
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Sun 8/29:30 pm
ORD
- SGN
2 stops36h 35m
United Airlines
Thu 9/107:00 am
SGN
- ORD
1 stop19h 55m
United Airlines
Deal found 7/6![United Airlines logo]()
$970
This ScholarTrip deal was found by Cheapflights users on 7/8. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:00 pm
ORD
- HAN
1 stop35h 35m
Cathay Pacific
Mon 8/3110:25 am
HAN
- ORD
1 stop39h 55m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$899
This ScholarTrip deal was found by Cheapflights users on 7/7. 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 ScholarTrip 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
Tue 8/186:20 pm
SGN
- ORD
1 stop32h 00m
Cathay Pacific
Deal found 7/7![Cathay Pacific logo]()
$969
This KAYAK deal was found by Cheapflights users on 7/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:00 pm
ORD
- DAD
1 stop31h 05m
Cathay Pacific
Tue 10/2010:05 am
DAD
- ORD
1 stop39h 50m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$854
This Jettzy deal was found by Cheapflights users on 7/5. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:00 pm
ORD
- HAN
1 stop38h 10m
Cathay Pacific
Wed 8/267:10 pm
HAN
- ORD
1 stop31h 10m
Cathay Pacific
Deal found 7/5![Cathay Pacific logo]()
$975
This Delta deal was found by Cheapflights users on 7/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/219:59 am
MDW
- SGN
2 stops24h 11m
Delta
Sat 9/127:30 am
SGN
- MDW
2 stops27h 15m
Delta
Deal found 7/7![Delta logo]()
$975
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Sat 8/2211:50 am
ORD
- SGN
1 stop24h 25m
United Airlines
Sun 9/137:00 am
SGN
- ORD
1 stop19h 55m
United Airlines
Deal found 7/7![United Airlines logo]()
$971
This Delta deal was found by Cheapflights users on 7/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:48 am
ORD
- SGN
2 stops26h 27m
Delta
Sun 9/137:30 am
SGN
- ORD
2 stops26h 03m
Delta
Deal found 7/7![Delta logo]()
$975
This oojo deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:00 pm
ORD
- PQC
1 stop38h 05m
Cathay Pacific
Mon 8/317:05 pm
PQC
- ORD
1 stop31h 15m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$934
This KAYAK deal was found by Cheapflights users on 7/5. 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.
Fri 8/284:00 pm
ORD
- HAN
1 stop35h 35m
Cathay Pacific
Tue 9/87:10 pm
HAN
- ORD
1 stop31h 10m
Cathay Pacific
Deal found 7/5![Cathay Pacific logo]()
$909
This ScholarTrip deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:00 pm
ORD
- HAN
1 stop38h 10m
Cathay Pacific
Sun 9/610:25 am
HAN
- ORD
1 stop39h 55m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$949
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 July 9, 2026.
Search for one-way flight options from Illinois to Vietnam. Find affordable one-way fares based on user searches. Data last updated July 9, 2026.
This KAYAK deal was found by Cheapflights users on 7/6. 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.
Mon 9/144:00 pm
ORD
- DAD
1 stop37h 25m
Cathay Pacific
Deal found 7/6![Cathay Pacific logo]()
$450
This Ovago deal was found by Cheapflights users on 7/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:00 pm
ORD
- DAD
1 stop29h 20m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$456
This oojo deal was found by Cheapflights users on 7/8. 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.
Thu 8/204:00 pm
ORD
- SGN
1 stop30h 05m
Cathay Pacific
Deal found 7/8![Cathay Pacific logo]()
$460
This oojo deal was found by Cheapflights users on 7/6. 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.
Wed 8/54:00 pm
ORD
- HAN
1 stop29h 55m
Cathay Pacific
Deal found 7/6![Cathay Pacific logo]()
$461
This oojo deal was found by Cheapflights users on 7/5. 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.
Tue 8/254:00 pm
ORD
- SGN
1 stop20h 20m
Cathay Pacific
Deal found 7/5![Cathay Pacific logo]()
$461
This FlightHub deal was found by Cheapflights users on 7/7. 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.
Tue 8/44:00 pm
ORD
- HAN
1 stop29h 55m
Cathay Pacific
Deal found 7/7![Cathay Pacific logo]()
$464
This United Airlines deal was found by Cheapflights users on 7/6. 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 8/1212:15 pm
ORD
- SGN
1 stop21h 40m
United Airlines
Deal found 7/6![United Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/257:00 am
ORD
- SGN
2 stops27h 05m
United Airlines
Deal found 7/8![United Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/238:09 pm
ORD
- SGN
2 stops37h 46m
United Airlines
Deal found 7/8![United Airlines logo]()
$472
This Korean Air deal was found by Cheapflights users on 7/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:10 pm
ORD
- SGN
1 stop23h 05m
Korean Air
Deal found 7/8![Korean Air logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:00 pm
ORD
- DAD
1 stop29h 20m
Cathay Pacific
Deal found 7/6![Cathay Pacific logo]()
$475
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:00 pm
ORD
- HAN
1 stop29h 55m
Cathay Pacific
Deal found 7/6![Cathay Pacific logo]()
$475
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 July 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $854 (KAYAK) |
One-way from | $450 (KAYAK) |
Popular in | June |
Cheapest in | September |
Average price | $1,233 |
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 July 9, 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
ChicagoPhu Quoc
ORD - PQC
ORDPQC
Chicago O'Hare Intl
Thu 10/8
4:15 pm-9:40 am
1 stop29h 25m
Phu Quoc Duong Dang
Sat 10/24
7:05 pm-1:55 pm
1 stop30h 50m
$910
ChicagoPhu Quoc
ORD - PQC
ORDPQC
Chicago O'Hare Intl
Thu 9/17
4:15 pm-6:05 pm
1 stop37h 50m
Phu Quoc Duong Dang
Mon 9/21
10:40 am-1:55 pm
1 stop39h 15m
$967
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Sun 8/2
9:30 pm-10:05 pm
2 stops36h 35m
Ho Chi Minh City
Thu 9/10
7:00 am-5:05 pm
2 stops22h 05m
$974
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Sat 9/26
6:24 pm-10:10 pm
2 stops39h 46m
Ho Chi Minh City
Sat 10/10
1:55 pm-1:01 pm
2 stops35h 06m
$981
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Sun 8/2
9:30 pm-10:05 pm
2 stops36h 35m
Ho Chi Minh City
Tue 9/8
7:00 am-8:36 pm
2 stops25h 36m
$983
Quickest round-trip
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Tue 8/4
8:48 am-10:05 pm
2 stops25h 17m
Ho Chi Minh City
Sun 9/6
7:00 am-2:55 pm
1 stop19h 55m
$1,006
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Fri 8/21
12:30 pm-11:15 pm
1 stop22h 45m
Ho Chi Minh City
Fri 8/28
1:55 pm-12:40 pm
2 stops34h 45m
$1,021
ChicagoDa Nang
ORD - DAD
ORDDAD
Chicago O'Hare Intl
Tue 8/11
4:00 pm-7:05 am
2 stops27h 05m
Da Nang
Tue 10/20
10:05 am-1:55 pm
1 stop39h 50m
$1,029
ChicagoHo Chi Minh City
ORD - SGN
ORDSGN
Chicago O'Hare Intl
Fri 8/7
5:30 am-10:05 pm
3 stops28h 35m
Ho Chi Minh City
Mon 8/24
7:00 am-10:46 pm
3 stops27h 46m
$1,029
ChicagoPhu Quoc
ORD - PQC
ORDPQC
Chicago O'Hare Intl
Thu 10/8
4:15 pm-6:05 pm
1 stop37h 50m
Phu Quoc Duong Dang
Sat 10/24
10:05 pm-1:55 pm
2 stops51h 50m
$1,043
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-DAD
ORD-HAN
ORD-PQC
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-DAD
ORD-HAN
ORD-PQC
ORD-SGN
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 $468). Flying from Illinois to Vietnam in June is currently the most expensive (average of $2,229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from 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 20 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
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 July 9, 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 July 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$650 | Average$1,082 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$662 | Average$912 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$671 | Average$963 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$681 | Average$1,318 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$766 | Average$1,097 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$768 | Average$1,047 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$774 | Average$1,177 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$801 | Average$1,034 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$840 | Average$1,139 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$877 | Average$1,276 | FlexibilityNo cancel fee | On-time74% |