$92+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAS
Jun 9 — Jun 161
Round-trip
1 adult, Economy
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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 May 10, 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 May 10, 2026.
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:31 pm
MLI
- LAS
Nonstop3h 32m
Allegiant Air
Thu 8/277:05 am
LAS
- MLI
Nonstop3h 11m
Allegiant Air
Deal found 5/6![Allegiant Air logo]()
$123
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:05 pm
MLI
- LAS
Nonstop3h 32m
Allegiant Air
Thu 10/157:05 am
LAS
- MLI
Nonstop3h 10m
Allegiant Air
Deal found 5/9![Allegiant Air logo]()
$168
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2312:31 pm
MLI
- LAS
Nonstop3h 27m
Allegiant Air
Thu 8/66:25 am
LAS
- MLI
Nonstop3h 16m
Allegiant Air
Deal found 5/5![Allegiant Air logo]()
$174
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/812:55 pm
PIA
- LAS
Nonstop3h 30m
Allegiant Air
Fri 6/196:45 am
LAS
- PIA
Nonstop3h 20m
Allegiant Air
Deal found 5/9![Allegiant Air logo]()
$179
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/512:31 pm
MLI
- LAS
Nonstop3h 27m
Allegiant Air
Thu 7/96:25 am
LAS
- MLI
Nonstop3h 16m
Allegiant Air
Deal found 5/8![Allegiant Air logo]()
$180
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1412:45 pm
PIA
- LAS
Nonstop3h 40m
Allegiant Air
Fri 8/211:14 pm
LAS
- PIA
Nonstop3h 15m
Allegiant Air
Deal found 5/10![Allegiant Air logo]()
$180
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:19 pm
MLI
- LAS
Nonstop3h 38m
Allegiant Air
Sun 5/246:15 am
LAS
- MLI
Nonstop3h 15m
Allegiant Air
Deal found 5/6![Allegiant Air logo]()
$191
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/212:31 pm
MLI
- LAS
Nonstop3h 27m
Allegiant Air
Sun 7/56:25 am
LAS
- MLI
Nonstop3h 16m
Allegiant Air
Deal found 5/9![Allegiant Air logo]()
$193
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2112:29 pm
MLI
- LAS
Nonstop3h 26m
Allegiant Air
Thu 6/256:25 am
LAS
- MLI
Nonstop3h 14m
Allegiant Air
Deal found 5/5![Allegiant Air logo]()
$199
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1212:55 pm
PIA
- LAS
Nonstop3h 30m
Allegiant Air
Fri 6/196:45 am
LAS
- PIA
Nonstop3h 20m
Allegiant Air
Deal found 5/7![Allegiant Air logo]()
$204
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:31 pm
MLI
- LAS
Nonstop3h 32m
Allegiant Air
Thu 8/207:05 am
LAS
- MLI
Nonstop3h 11m
Allegiant Air
Deal found 5/5![Allegiant Air logo]()
$205
This Cheapflightsfares 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 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 5/6![Allegiant Air logo]()
$209
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 May 10, 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 May 10, 2026.
This Booking.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 Booking.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 5/5![Allegiant Air logo]()
$228
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.
Tue 6/24:30 pm
ORD
- LAS
Nonstop4h 03m
United Airlines
Tue 6/97:00 am
LAS
- ORD
Nonstop3h 48m
United Airlines
Deal found 5/10![United Airlines logo]()
$257
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/301:01 pm
RFD
- LAS
1 stop12h 37m
Multiple Airlines
Thu 6/47:00 am
LAS
- RFD
Nonstop3h 23m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$266
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.
Fri 5/297:45 pm
ORD
- LAS
1 stop5h 59m
Delta
Tue 6/26:00 am
LAS
- ORD
1 stop8h 56m
Delta
Deal found 5/9![Delta logo]()
$277
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:25 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Mon 6/110:05 pm
LAS
- MDW
1 stop5h 35m
Southwest
Deal found 5/6![Southwest logo]()
$293
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:04 pm
BMI
- LAS
1 stop6h 50m
American Airlines
Sat 8/11:12 pm
LAS
- BMI
2 stops9h 23m
American Airlines
Deal found 5/5![American Airlines logo]()
$377
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:19 pm
STL
- LAS
2 stops11h 11m
Alaska Airlines
Mon 6/18:37 pm
LAS
- STL
2 stops17h 56m
Alaska Airlines
Deal found 5/7![Alaska Airlines logo]()
$399
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/21:14 pm
RFD
- LAS
Nonstop3h 39m
Allegiant Air
Sun 7/57:00 am
LAS
- RFD
Nonstop3h 24m
Allegiant Air
Deal found 5/9![Allegiant Air logo]()
$240
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.
Wed 6/33:54 pm
ORD
- LAS
Nonstop4h 03m
United Airlines
Mon 6/811:30 pm
LAS
- ORD
Nonstop3h 41m
United Airlines
Deal found 5/10![United Airlines logo]()
$263
This Gotogate 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 Gotogate 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
Thu 6/47:00 am
LAS
- RFD
Nonstop3h 23m
Allegiant Air
Deal found 5/6![Allegiant Air logo]()
$245
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.
Fri 7/37:45 am
ORD
- LAS
1 stop6h 17m
Delta
Wed 7/81:15 pm
LAS
- ORD
1 stop6h 33m
Delta
Deal found 5/10![Delta logo]()
$277
This Kiwi.com 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 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
Multiple Airlines
Fri 5/291:11 pm
LAS
- RFD
2 stops18h 10m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$290
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.
Fri 5/293:47 pm
ORD
- LAS
1 stop6h 34m
United Airlines
Mon 6/111:59 pm
LAS
- ORD
Nonstop3h 41m
United Airlines
Deal found 5/6![United Airlines logo]()
$273
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:14 pm
RFD
- LAS
Nonstop3h 39m
Allegiant Air
Sun 8/27:00 am
LAS
- RFD
Nonstop3h 24m
Allegiant Air
Deal found 5/9![Allegiant Air logo]()
$253
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:10 am
MDW
- LAS
1 stop5h 00m
Southwest
Tue 7/77:50 am
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 5/6![Southwest logo]()
$313
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:13 pm
RFD
- LAS
1 stop13h 41m
Multiple Airlines
Thu 6/47:00 am
LAS
- RFD
Nonstop3h 23m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$291
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/610:15 am
MDW
- LAS
1 stop5h 05m
Southwest
Wed 6/1011:55 pm
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 5/6![Southwest logo]()
$314
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.
Sat 6/205:30 am
ORD
- LAS
1 stop7h 37m
Delta
Tue 6/231:15 pm
LAS
- ORD
1 stop6h 42m
Delta
Deal found 5/10![Delta logo]()
$327
This Mytrip 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 Mytrip 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 5/7![Allegiant Air logo]()
$271
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.
Sat 6/67:50 pm
ORD
- LAS
Nonstop4h 09m
United Airlines
Sat 6/137:00 am
LAS
- ORD
Nonstop3h 48m
United Airlines
Deal found 5/9![United Airlines logo]()
$313
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:15 pm
MDW
- LAS
Nonstop3h 50m
Southwest
Mon 6/811:55 pm
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 5/6![Southwest logo]()
$314
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:35 am
ORD
- LAS
1 stop6h 38m
Delta
Mon 7/61:08 pm
LAS
- ORD
1 stop8h 10m
Delta
Deal found 5/6![Delta logo]()
$345
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/28:55 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Tue 6/96:00 pm
LAS
- MDW
Nonstop3h 35m
Southwest
Deal found 5/6![Southwest logo]()
$317
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.
Thu 6/41:13 pm
PIA
- LAS
1 stop7h 20m
United Airlines
Sun 6/711:30 pm
LAS
- PIA
1 stop8h 40m
United Airlines
Deal found 5/6![United Airlines logo]()
$329
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:15 am
ORD
- LAS
Nonstop4h 00m
Southwest
Sat 5/301:45 pm
LAS
- ORD
1 stop6h 35m
Southwest
Deal found 5/8![Southwest logo]()
$318
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:14 pm
RFD
- LAS
Nonstop3h 39m
Allegiant Air
Sun 7/267:00 am
LAS
- RFD
Nonstop3h 24m
Allegiant Air
Deal found 5/7![Allegiant Air logo]()
$320
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:45 pm
BMI
- LAS
1 stop9h 00m
American Airlines
Sun 5/176:00 am
LAS
- BMI
1 stop6h 16m
American Airlines
Deal found 5/7![American Airlines logo]()
$469
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.
Fri 6/122:31 pm
MLI
- LAS
1 stop6h 02m
United Airlines
Mon 6/1511:59 pm
LAS
- MLI
1 stop8h 00m
United Airlines
Deal found 5/9![United Airlines logo]()
$339
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/169:42 am
STL
- LAS
2 stops10h 59m
Alaska Airlines
Tue 6/237:59 am
LAS
- STL
2 stops9h 37m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$505
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:00 am
BMI
- LAS
2 stops8h 31m
American Airlines
Sat 5/161:52 pm
LAS
- BMI
1 stop8h 00m
American Airlines
Deal found 5/5![American Airlines logo]()
$474
Last-minute flights from Illinois to Las VegasDiscover last-minute flight deals from Illinois to Las Vegas. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Las Vegas. Data last updated May 10, 2026 and is based on user searches.
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:19 pm
MLI
- LAS
Nonstop3h 38m
Allegiant Air
Sun 5/246:15 am
LAS
- MLI
Nonstop3h 15m
Allegiant Air
Deal found 5/6![Allegiant Air logo]()
$191
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:11 pm
ORD
- LAS
1 stop20h 03m
Frontier
Tue 6/28:59 pm
LAS
- ORD
1 stop21h 33m
Frontier
Deal found 5/5![Frontier logo]()
$209
This Cheapflightsfares 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 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 5/6![Allegiant Air logo]()
$209
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:27 pm
MDW
- LAS
1 stop10h 24m
Frontier
Wed 6/106:45 am
LAS
- MDW
1 stop13h 26m
Frontier
Deal found 5/9![Frontier logo]()
$210
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/812:55 pm
PIA
- LAS
Nonstop3h 30m
Allegiant Air
Fri 6/196:45 am
LAS
- PIA
Nonstop3h 20m
Allegiant Air
Deal found 5/9![Allegiant Air logo]()
$179
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/84:05 pm
ORD
- LAS
1 stop8h 18m
Frontier
Tue 6/1611:20 pm
LAS
- ORD
Nonstop3h 47m
Frontier
Deal found 5/6![Frontier logo]()
$211
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:20 am
ORD
- LAS
Nonstop4h 16m
Frontier
Wed 6/1010:10 pm
LAS
- ORD
1 stop7h 53m
Frontier
Deal found 5/5![Frontier logo]()
$213
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.
Tue 6/97:40 am
ORD
- LAS
1 stop10h 33m
Multiple Airlines
Tue 6/1611:20 pm
LAS
- ORD
Nonstop3h 47m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$214
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:20 am
ORD
- LAS
Nonstop4h 16m
Frontier
Tue 6/1611:20 pm
LAS
- ORD
Nonstop3h 47m
Frontier
Deal found 5/8![Frontier logo]()
$215
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1212:55 pm
PIA
- LAS
Nonstop3h 30m
Allegiant Air
Fri 6/196:45 am
LAS
- PIA
Nonstop3h 20m
Allegiant Air
Deal found 5/7![Allegiant Air logo]()
$204
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2112:29 pm
MLI
- LAS
Nonstop3h 26m
Allegiant Air
Thu 6/256:25 am
LAS
- MLI
Nonstop3h 14m
Allegiant Air
Deal found 5/5![Allegiant Air logo]()
$199
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:29 pm
ORD
- LAS
1 stop23h 31m
Frontier
Tue 7/711:40 pm
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 5/6![Frontier logo]()
$210
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 May 10, 2026.
Search for one-way flight options from Illinois to Las Vegas. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:08 pm
STL
- LAS
1 stop5h 21m
Frontier
Deal found 5/9![Frontier logo]()
$92
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:27 pm
STL
- LAS
1 stop29h 12m
Frontier
Deal found 5/10![Frontier logo]()
$94
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:52 pm
STL
- LAS
2 stops31h 16m
Frontier
Deal found 5/6![Frontier logo]()
$95
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:03 pm
STL
- LAS
1 stop7h 01m
Frontier
Deal found 5/10![Frontier logo]()
$98
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.
Tue 6/98:08 pm
STL
- LAS
1 stop19h 40m
Frontier
Deal found 5/5![Frontier logo]()
$99
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/238:08 pm
STL
- LAS
1 stop19h 40m
Frontier
Deal found 5/6![Frontier logo]()
$100
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.
Mon 6/112:53 pm
PIA
- LAS
Nonstop3h 40m
Allegiant Air
Deal found 5/7![Allegiant Air logo]()
$102
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:38 pm
STL
- LAS
1 stop5h 51m
Frontier
Deal found 5/9![Frontier logo]()
$102
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:04 pm
STL
- LAS
1 stop7h 00m
Frontier
Deal found 5/6![Frontier logo]()
$104
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:19 pm
STL
- LAS
1 stop6h 35m
Frontier
Deal found 5/9![Frontier logo]()
$105
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:20 am
ORD
- LAS
Nonstop4h 16m
Frontier
Deal found 5/7![Frontier logo]()
$108
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:38 pm
STL
- LAS
1 stop5h 51m
Frontier
Deal found 5/9![Frontier logo]()
$108
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 May 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $123 (Cheapflightsfares) |
One-way from | $92 (Super.com) |
Popular in | March |
Cheapest in | August |
Average price | $343 |
Good round-trip deal | $138 or less |
Good one-way deal | $132 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 May 10, 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 5/17
12:50 pm-2:39 pm
Nonstop3h 49m
Las Vegas Harry Reid Intl
Thu 5/21
7:00 am-12:21 pm
Nonstop3h 21m
$228
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Thu 7/2
1:14 pm-2:53 pm
Nonstop3h 39m
Las Vegas Harry Reid Intl
Sun 7/5
7:00 am-12:24 pm
Nonstop3h 24m
$240
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Thu 5/28
1:11 pm-2:52 pm
Nonstop3h 41m
Las Vegas Harry Reid Intl
Thu 6/4
7:00 am-12:23 pm
Nonstop3h 23m
$245
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Thu 7/30
1:14 pm-2:53 pm
Nonstop3h 39m
Las Vegas Harry Reid Intl
Sun 8/2
7:00 am-12:24 pm
Nonstop3h 24m
$253
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Tue 6/2
4:30 pm-6:33 pm
Nonstop4h 03m
Las Vegas Harry Reid Intl
Tue 6/9
7:00 am-12:48 pm
Nonstop3h 48m
$257
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Wed 6/3
3:54 pm-5:57 pm
Nonstop4h 03m
Las Vegas Harry Reid Intl
Mon 6/8
11:30 pm-5:11 am
Nonstop3h 41m
$263
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Sat 5/30
1:01 pm-11:38 pm
1 stop12h 37m
Las Vegas Harry Reid Intl
Thu 6/4
7:00 am-12:23 pm
Nonstop3h 23m
$266
Quickest round-trip
ChicagoLas Vegas
RFD - LAS
RFDLAS
Chicago Greater Rockford
Thu 5/28
1:11 pm-2:52 pm
Nonstop3h 41m
Las Vegas Harry Reid Intl
Sun 5/31
7:00 am-12:21 pm
Nonstop3h 21m
$271
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Fri 5/29
3:47 pm-8:21 pm
1 stop6h 34m
Las Vegas Harry Reid Intl
Mon 6/1
11:59 pm-5:40 am
Nonstop3h 41m
$273
ChicagoLas Vegas
ORD - LAS
ORDLAS
Chicago O'Hare Intl
Fri 5/29
7:45 pm-11:44 pm
1 stop5h 59m
Las Vegas Harry Reid Intl
Tue 6/2
6:00 am-4:56 pm
1 stop8h 56m
$277
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.
PIA-LAS
MLI-LAS
ORD-LAS
MDW-LAS
RFD-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
PIA-LAS
MLI-LAS
ORD-LAS
MDW-LAS
How far ahead should I book a flight from Illinois to Las Vegas?
The best time to book flights from Illinois to Las Vegas is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Illinois to Las Vegas?
Currently, November is the cheapest month in which you can book a flight from Illinois to Las Vegas (average of $244). Flying from Illinois to Las Vegas in March is currently the most expensive (average of $369). 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 May 10, 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 18% on your trip compared to booking a flight at noon.
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 May 2, 2026.
Travelers seeking maximum savings on their Illinois to Las Vegas flight should consider departing on Friday evenings when fares are most often at their lowest. Friday afternoons 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 May 10, 2026.
The most flights from USIL to LAS are scheduled on a Friday (53 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (36 on average).
How much does it cost to fly round-trip from Illinois to Las Vegas?
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
Mesquite
North Las Vegas
Henderson
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.
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Alternative routes for Illinois to Las Vegas
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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 May 10, 2026.
Illinois and Las Vegas flights
Browse other Illinois and Las Vegas flight options. Last updated on May 10, 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 May 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$269 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$86 | Average$175 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$110 | Average$288 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$118 | Average$333 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$147 | Average$336 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$159 | Average$426 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$159 | Average$346 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$159 | Average$390 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$225 | Average$338 | FlexibilityNo cancel fee | On-time75% |