$68+ Cheap flights from Illinois to Las Vegas (LAS)
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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAS
Apr 11 — Apr 181
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Illinois to Las Vegas 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 Las Vegas
Cheapest
Best
Last-minute
One-way
Cheapest flights from Illinois to Las VegasExplore the most affordable flight options available from Illinois to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.
Explore the most affordable flight options available from Illinois to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:19 pm
MLI
- LAS
Nonstop3h 38m
Allegiant Air
Thu 5/76:20 am
LAS
- MLI
Nonstop3h 09m
Allegiant Air
Deal found 3/7![Allegiant Air logo]()
$129
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 4/179:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sat 4/187:00 am
LAS
- STL
1 stop10h 32m
Frontier
Deal found 3/8![Frontier logo]()
$148
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Thu 4/2311:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$150
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:21 pm
ORD
- LAS
1 stop9h 48m
Spirit Airlines
Fri 4/172:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/9![Spirit Airlines logo]()
$151
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Fri 4/1712:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/9![Frontier logo]()
$152
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Mon 4/2712:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/7![Frontier logo]()
$153
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/202:15 pm
MDW
- LAS
1 stop10h 13m
Frontier
Thu 4/2310:28 pm
LAS
- MDW
1 stop21h 22m
Frontier
Deal found 3/9![Frontier logo]()
$153
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:07 pm
ORD
- LAS
Nonstop3h 52m
Multiple Airlines
Mon 4/2712:20 am
LAS
- ORD
Nonstop3h 48m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$154
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 3/10![Frontier logo]()
$154
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:18 pm
ORD
- LAS
Nonstop4h 18m
Frontier
Mon 5/117:00 am
LAS
- ORD
1 stop20h 50m
Frontier
Deal found 3/9![Frontier logo]()
$155
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:07 pm
ORD
- LAS
Nonstop3h 52m
Multiple Airlines
Mon 5/412:59 am
LAS
- ORD
Nonstop3h 48m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$156
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3112:20 pm
MLI
- LAS
Nonstop3h 32m
Allegiant Air
Thu 6/46:25 am
LAS
- MLI
Nonstop3h 14m
Allegiant Air
Deal found 3/9![Allegiant Air logo]()
$157
Best flights from Illinois to Las VegasDiscover carefully curated flight deals from Illinois to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.
Discover carefully curated flight deals from Illinois to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:50 pm
RFD
- LAS
Nonstop3h 49m
Allegiant Air
Thu 5/76:40 am
LAS
- RFD
Nonstop3h 20m
Allegiant Air
Deal found 3/7![Allegiant Air logo]()
$190
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/134:50 pm
ORD
- LAS
Nonstop4h 00m
Southwest
Wed 4/225:10 pm
LAS
- ORD
Nonstop3h 45m
Southwest
Deal found 3/8![Southwest logo]()
$255
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1010:52 am
ORD
- LAS
Nonstop4h 11m
United Airlines
Tue 5/1212:45 pm
LAS
- ORD
Nonstop3h 47m
United Airlines
Deal found 3/11![United Airlines logo]()
$257
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:59 pm
STL
- LAS
1 stop7h 29m
Delta
Sat 6/136:25 am
LAS
- STL
1 stop8h 20m
Delta
Deal found 3/7![Delta logo]()
$273
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:45 pm
RFD
- LAS
Nonstop3h 49m
Multiple Airlines
Wed 4/89:45 pm
LAS
- RFD
1 stop10h 02m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$285
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/92:10 pm
ORD
- LAS
1 stop7h 07m
Alaska Airlines
Mon 6/227:59 am
LAS
- ORD
1 stop9h 01m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$295
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:50 pm
RFD
- LAS
Nonstop3h 49m
Allegiant Air
Thu 5/217:00 am
LAS
- RFD
Nonstop3h 21m
Allegiant Air
Deal found 3/9![Allegiant Air logo]()
$203
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:00 am
MDW
- LAS
1 stop6h 00m
Southwest
Mon 4/2011:55 pm
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 3/7![Southwest logo]()
$267
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 5/105:41 pm
ORD
- LAS
1 stop7h 31m
Delta
Fri 5/1511:29 am
LAS
- ORD
1 stop6h 45m
Delta
Deal found 3/8![Delta logo]()
$277
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.
Sun 5/312:50 pm
RFD
- LAS
Nonstop3h 49m
Allegiant Air
Sun 5/106:40 am
LAS
- RFD
Nonstop3h 20m
Allegiant Air
Deal found 3/8![Allegiant Air logo]()
$253
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.
Wed 8/57:15 pm
BMI
- LAS
1 stop6h 38m
United Airlines
Tue 8/1112:59 am
LAS
- BMI
2 stops9h 51m
United Airlines
Deal found 3/8![United Airlines logo]()
$284
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.
Tue 8/114:00 pm
BMI
- LAS
1 stop7h 04m
Delta
Tue 8/1811:00 am
LAS
- BMI
1 stop9h 22m
Delta
Deal found 3/8![Delta logo]()
$279
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:50 pm
RFD
- LAS
Nonstop3h 49m
Multiple Airlines
Tue 5/512:59 am
LAS
- RFD
2 stops30h 48m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$311
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:05 pm
MDW
- LAS
1 stop6h 15m
Southwest
Fri 5/15:30 am
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 3/11![Southwest logo]()
$287
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.
Wed 5/207:05 pm
MLI
- LAS
1 stop6h 46m
United Airlines
Tue 5/2611:30 pm
LAS
- MLI
1 stop8h 29m
United Airlines
Deal found 3/8![United Airlines logo]()
$290
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:50 pm
RFD
- LAS
Nonstop3h 49m
Allegiant Air
Sun 5/176:40 am
LAS
- RFD
Nonstop3h 20m
Allegiant Air
Deal found 3/10![Allegiant Air logo]()
$271
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/222:20 pm
STL
- LAS
2 stops10h 21m
Delta
Sat 4/256:05 am
LAS
- STL
1 stop6h 56m
Delta
Deal found 3/7![Delta logo]()
$289
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:40 pm
MDW
- LAS
Nonstop4h 00m
Southwest
Mon 4/611:55 pm
LAS
- MDW
Nonstop3h 25m
Southwest
Deal found 3/9![Southwest logo]()
$293
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.
Wed 6/39:49 am
CMI
- LAS
1 stop6h 57m
United Airlines
Fri 6/512:36 am
LAS
- CMI
1 stop6h 18m
United Airlines
Deal found 3/7![United Airlines logo]()
$298
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:34 am
STL
- LAS
2 stops11h 12m
Alaska Airlines
Thu 4/166:29 am
LAS
- STL
2 stops11h 01m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$384
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.
Fri 4/246:45 pm
STL
- LAS
1 stop6h 52m
Delta
Tue 4/286:00 am
LAS
- STL
2 stops9h 26m
Delta
Deal found 3/8![Delta logo]()
$289
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:50 pm
RFD
- LAS
Nonstop3h 49m
Allegiant Air
Sun 5/247:00 am
LAS
- RFD
Nonstop3h 21m
Allegiant Air
Deal found 3/7![Allegiant Air logo]()
$291
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 6/61:21 pm
PIA
- LAS
2 stops9h 00m
United Airlines
Mon 6/1511:30 pm
LAS
- PIA
1 stop8h 40m
United Airlines
Deal found 3/8![United Airlines logo]()
$299
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/114:45 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Mon 4/139:55 pm
LAS
- MDW
1 stop5h 05m
Southwest
Deal found 3/11![Southwest logo]()
$303
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:59 pm
STL
- LAS
1 stop5h 44m
Delta
Mon 6/85:30 pm
LAS
- STL
1 stop5h 06m
Delta
Deal found 3/10![Delta logo]()
$293
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.
Fri 5/82:10 pm
PAH
- LAS
1 stop7h 47m
United Airlines
Tue 5/1210:35 pm
LAS
- PAH
2 stops13h 00m
United Airlines
Deal found 3/7![United Airlines logo]()
$304
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:40 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Thu 4/236:20 pm
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 3/8![Southwest logo]()
$307
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:37 am
RFD
- LAS
2 stops38h 06m
Multiple Airlines
Thu 4/26:35 am
LAS
- RFD
Nonstop3h 20m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$421
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/201:22 pm
MDW
- LAS
1 stop8h 21m
Delta
Sat 5/2312:45 am
LAS
- MDW
1 stop5h 57m
Delta
Deal found 3/7![Delta logo]()
$297
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:11 pm
RFD
- LAS
Nonstop3h 41m
Allegiant Air
Sun 5/317:00 am
LAS
- RFD
Nonstop3h 21m
Allegiant Air
Deal found 3/7![Allegiant Air logo]()
$337
Last-minute flights from Illinois to Las VegasDiscover last-minute flight deals from Illinois to Las Vegas. Data last updated March 12, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Las Vegas. Data last updated March 12, 2026 and is based on user searches.
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 3/10![Frontier logo]()
$154
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Wed 4/159:20 pm
LAS
- STL
1 stop20h 01m
Frontier
Deal found 3/9![Frontier logo]()
$157
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:21 pm
ORD
- LAS
1 stop9h 48m
Spirit Airlines
Fri 4/172:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/9![Spirit Airlines logo]()
$151
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Fri 4/1712:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/9![Frontier logo]()
$152
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 4/179:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sat 4/187:00 am
LAS
- STL
1 stop10h 32m
Frontier
Deal found 3/8![Frontier logo]()
$148
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Thu 4/2311:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$150
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/202:15 pm
MDW
- LAS
1 stop10h 13m
Frontier
Thu 4/2310:28 pm
LAS
- MDW
1 stop21h 22m
Frontier
Deal found 3/9![Frontier logo]()
$153
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Mon 4/2712:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/7![Frontier logo]()
$153
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:07 pm
ORD
- LAS
Nonstop3h 52m
Multiple Airlines
Mon 5/412:59 am
LAS
- ORD
Nonstop3h 48m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$156
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:07 pm
ORD
- LAS
Nonstop3h 52m
Multiple Airlines
Mon 4/2712:20 am
LAS
- ORD
Nonstop3h 48m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$154
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Mon 4/2712:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/7![Frontier logo]()
$157
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Sat 5/212:59 am
LAS
- ORD
1 stop6h 46m
Frontier
Deal found 3/9![Frontier logo]()
$155
One-way flights from Illinois to Las VegasSearch for one-way flight options from Illinois to Las Vegas. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
Search for one-way flight options from Illinois to Las Vegas. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 3/7![Frontier logo]()
$68
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/199:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 3/9![Frontier logo]()
$69
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/612:17 pm
STL
- LAS
Nonstop3h 46m
Frontier
Deal found 3/11![Frontier logo]()
$78
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3010:36 pm
MDW
- LAS
1 stop16h 16m
Frontier
Deal found 3/10![Frontier logo]()
$79
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 3/9![Frontier logo]()
$79
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:33 pm
PIA
- LAS
Nonstop3h 37m
Allegiant Air
Deal found 3/7![Allegiant Air logo]()
$80
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:00 pm
ORD
- LAS
1 stop6h 40m
Spirit Airlines
Deal found 3/9![Spirit Airlines logo]()
$80
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1710:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Deal found 3/9![Spirit Airlines logo]()
$81
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:55 pm
ORD
- LAS
Nonstop4h 20m
Frontier
Deal found 3/7![Frontier logo]()
$82
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:06 pm
STL
- LAS
1 stop21h 36m
Frontier
Deal found 3/10![Frontier logo]()
$82
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:07 am
ORD
- LAS
1 stop10h 25m
Frontier
Deal found 3/12![Frontier logo]()
$83
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:30 pm
MDW
- LAS
1 stop32h 15m
Frontier
Deal found 3/10![Frontier logo]()
$83
Find flight deals from Illinois to Las Vegas
Keep the following information in mind while searching for Illinois to Las Vegas flight deals. Data was last updated March 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $129 (Cheapflightsfares) |
One-way from | $68 (Super.com) |
Popular in | March |
Cheapest in | August |
Average price | $338 |
Good round-trip deal | $214 or less |
Good one-way deal | $97 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Las Vegas 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 12, 2026.
Use the filters below to find and compare flights from Illinois to Las Vegas that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Sun 5/3
12:50 pm-2:39 pm
Nonstop3h 49m
Las Vegas Harry Reid Intl
Thu 5/7
6:40 am-12:00 pm
Nonstop3h 20m
$190
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Sun 5/17
12:50 pm-2:39 pm
Nonstop3h 49m
Las Vegas Harry Reid Intl
Thu 5/21
7:00 am-12:21 pm
Nonstop3h 21m
$203
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Sun 5/3
12:50 pm-2:39 pm
Nonstop3h 49m
Las Vegas Harry Reid Intl
Sun 5/10
6:40 am-12:00 pm
Nonstop3h 20m
$253
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Mon 4/13
4:50 pm-6:50 pm
Nonstop4h 00m
Las Vegas Harry Reid Intl
Wed 4/22
5:10 pm-10:55 pm
Nonstop3h 45m
$255
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sun 5/10
10:52 am-1:03 pm
Nonstop4h 11m
Las Vegas Harry Reid Intl
Tue 5/12
12:45 pm-6:32 pm
Nonstop3h 47m
$257
ChicagoLas Vegas
MDW - LAS
MDWLAS
Chicago Midway
Fri 4/17
11:00 am-3:00 pm
1 stop6h 00m
Las Vegas Harry Reid Intl
Mon 4/20
11:55 pm-5:25 am
Nonstop3h 30m
$267
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Thu 5/14
12:50 pm-2:39 pm
Nonstop3h 49m
Las Vegas Harry Reid Intl
Sun 5/17
6:40 am-12:00 pm
Nonstop3h 20m
$271
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Mon 6/8
6:59 pm-12:28 am
1 stop7h 29m
Las Vegas Harry Reid Intl
Sat 6/13
6:25 am-4:45 pm
1 stop8h 20m
$273
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Sun 5/10
5:41 pm-11:12 pm
1 stop7h 31m
Las Vegas Harry Reid Intl
Fri 5/15
11:29 am-8:14 pm
1 stop6h 45m
$277
BloomingtonLas Vegas
BMI - LAS
BMILAS
Bloomington-Normal
Tue 8/11
4:00 pm-9:04 pm
1 stop7h 04m
Las Vegas Harry Reid Intl
Tue 8/18
11:00 am-10:22 pm
1 stop9h 22m
$279
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Las Vegas
Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Illinois with our price prediction graph.
RFD-LAS
ORD-LAS
STL-LAS
MDW-LAS
BMI-LAS
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 Las Vegas
USIL-LAS
RFD-LAS
ORD-LAS
STL-LAS
MDW-LAS
What is the cheapest month to book a flight from Illinois to Las Vegas?
Currently, January is the cheapest month in which you can book a flight from Illinois to Las Vegas (average of $58). Flying from Illinois to Las Vegas in March is currently the most expensive (average of $133). 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.
What is the cheapest time of day to fly from IL to LAS?
Find hourly flight availability from Illinois to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 12, 2026.
A simple way to save on the total cost of your ticket is to fly from Illinois to Las Vegas in the evening. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from Illinois to Las Vegas?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Las Vegas. Price data was last updated on February 21, 2026.
Travelers seeking maximum savings on their Illinois to Las Vegas flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to Las Vegas
Explore weekly flight availability from Illinois to Las Vegas. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 12, 2026.
The most flights from USIL to LAS are scheduled on a Monday (44 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 on average).
Related info for your journey
Find useful and relevant information for your journey from Illinois to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Las Vegas?
Book flights to Las Vegas if you plan to visit one of these locationsParadise
Henderson
Mesquite
North Las Vegas
Kingman
Winchester
Boulder City
Needles
Sunrise Manor
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
Las Vegas flight routes
Other flight options
Popular flights
Top destinations
Alternative routes for Illinois to Las Vegas
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Las Vegas by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Las Vegas by cabin class
Find flights from Illinois to Las Vegas, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Las Vegas
Explore flights to Las Vegas departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 12, 2026.
Illinois and Las Vegas flights
Browse other Illinois and Las Vegas flight options. Last updated on March 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Las Vegas flights
Consider these flights traveling from Illinois to Las Vegas.
Top 9 airlines flying from Illinois to Las Vegas
Discover the top 9 airlines that operate flights from Illinois to Las Vegas. 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$260 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$82 | Average$183 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$110 | Average$279 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$117 | Average$416 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$118 | Average$287 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$140 | Average$310 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$159 | Average$421 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$159 | Average$331 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$222 | Average$347 | FlexibilityNo cancel fee | On-time75% |