$85+ Cheap flights from Illinois to Las Vegas (LAS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAS
Oct 24 — Oct 311
Round-trip
1 adult, Economy
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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
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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 September 24, 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 September 24, 2026.
This CheapOair deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/252:10 pm -
Nonstop3h 32m
Thu 10/296:35 am -
Nonstop3h 10m
Deal found 9/22![Allegiant Air logo]()
$169
This CheapOair deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:53 pm -
Nonstop3h 31m
Thu 10/17:00 am -
Nonstop3h 12m
Deal found 9/19![Allegiant Air logo]()
$172
This CheapOair deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:00 pm -
Nonstop3h 32m
Thu 10/226:35 am -
Nonstop3h 10m
Deal found 9/23![Allegiant Air logo]()
$179
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 -
Nonstop3h 32m
Thu 10/296:35 am -
Nonstop3h 10m
Deal found 9/19![Allegiant Air logo]()
$184
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 11/152:38 pm -
Nonstop3h 32m
Thu 11/193:22 pm -
Nonstop3h 08m
Deal found 9/19![Allegiant Air logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/274:58 pm -
Nonstop3h 40m
Thu 1/146:45 am -
Nonstop3h 12m
Deal found 9/21![Allegiant Air logo]()
$210
This Cheapflightsfares deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/224:20 pm -
1 stop6h 30m
Fri 10/236:15 am -
1 stop22h 19m
Deal found 9/22![Frontier logo]()
$218
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 11/36:30 am -
1 stop28h 02m
Tue 11/108:51 pm -
1 stop25h 30m
Deal found 9/19![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 11/168:13 pm -
1 stop12h 24m
Mon 11/2311:26 pm -
Nonstop3h 44m
Deal found 9/20![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/246:30 am -
1 stop19h 13m
Sat 10/311:38 pm -
1 stop8h 43m
Deal found 9/19![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 9/279:29 pm -
Nonstop3h 39m
Thu 10/12:53 pm -
Nonstop3h 20m
Deal found 9/19![Allegiant Air logo]()
$221
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/266:30 am -
1 stop28h 02m
Thu 10/2911:29 pm -
Nonstop3h 44m
Deal found 9/19![Frontier logo]()
$223
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 September 24, 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 September 24, 2026.
This Expedia deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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.
Mon 3/81:06 pm -
Nonstop3h 49m
Fri 3/123:35 pm -
Nonstop3h 11m
Deal found 9/23![Allegiant Air logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/119:33 pm -
Nonstop3h 43m
Thu 10/1510:52 am -
1 stop22h 35m
Deal found 9/23![Multiple Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 12/95:00 am -
2 stops7h 41m
Sat 12/1212:55 pm -
1 stop6h 02m
Deal found 9/22![United Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 12/28:50 pm -
Nonstop4h 10m
Mon 12/76:50 pm -
Nonstop3h 20m
Deal found 9/22![Southwest logo]()
$317
This Sun Country Air deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:45 pm -
1 stop25h 36m
Mon 12/2810:06 am -
1 stop6h 34m
Deal found 9/21![Sun Country Air logo]()
$335
This Alaska Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/225:46 pm -
1 stop8h 13m
Sat 10/2412:17 pm -
2 stops15h 23m
Deal found 9/20![Alaska Airlines logo]()
$345
This American Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:30 pm -
1 stop9h 19m
Sat 10/176:00 am -
1 stop5h 57m
Deal found 9/19![American Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/104:26 pm -
1 stop7h 40m
Sat 10/176:00 am -
1 stop7h 44m
Deal found 9/23![Delta logo]()
$394
This CheapOair deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:37 pm -
Nonstop3h 46m
Sun 11/226:35 am -
Nonstop3h 12m
Deal found 9/19![Allegiant Air logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/258:53 pm -
Nonstop3h 43m
Wed 10/287:20 am -
2 stops23h 30m
Deal found 9/19![Multiple Airlines logo]()
$264
This Mytrip deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 9/279:29 pm -
Nonstop3h 39m
Thu 10/12:53 pm -
Nonstop3h 20m
Deal found 9/23![Allegiant Air logo]()
$255
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 12/108:25 pm -
Nonstop4h 11m
Mon 12/144:25 pm -
Nonstop3h 48m
Deal found 9/23![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/165:50 am -
Nonstop3h 55m
Tue 11/1712:20 am -
Nonstop3h 20m
Deal found 9/21![Southwest logo]()
$317
This Orbitz deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/51:06 pm -
Nonstop3h 49m
Fri 3/123:35 pm -
Nonstop3h 11m
Deal found 9/21![Allegiant Air logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/159:03 pm -
Nonstop3h 43m
Thu 10/229:55 pm -
1 stop11h 32m
Deal found 9/20![Multiple Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/177:10 pm -
Nonstop3h 55m
Mon 10/1912:10 am -
Nonstop3h 30m
Deal found 9/20![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 12/199:47 pm -
Nonstop4h 14m
Thu 12/2410:35 am -
Nonstop3h 50m
Deal found 9/23![United Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/19:03 pm -
Nonstop3h 43m
Thu 10/82:53 pm -
Nonstop3h 20m
Deal found 9/20![Allegiant Air logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/18:17 pm -
1 stop15h 25m
Tue 10/68:23 pm -
1 stop15h 02m
Deal found 9/22![Alaska Airlines logo]()
$381
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 11/712:55 pm -
Nonstop4h 00m
Tue 11/1010:45 am -
1 stop4h 35m
Deal found 9/20![Southwest logo]()
$323
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 11/712:47 pm -
Nonstop4h 11m
Tue 11/101:44 pm -
1 stop5h 46m
Deal found 9/20![United Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/289:05 am -
Nonstop3h 55m
Wed 11/410:45 am -
1 stop4h 35m
Deal found 9/21![Southwest logo]()
$323
This CheapOair deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2012:27 pm -
Nonstop3h 54m
Tue 12/292:55 pm -
Nonstop3h 17m
Deal found 9/21![Allegiant Air logo]()
$294
This KAYAK deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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.
Sun 10/257:20 am -
1 stop7h 13m
Wed 10/286:02 am -
1 stop8h 48m
Deal found 9/22![Alaska Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 12/25:30 pm -
1 stop7h 06m
Sat 12/510:42 am -
2 stops8h 33m
Deal found 9/21![United Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/119:33 pm -
Nonstop3h 43m
Wed 10/2110:43 pm -
3 stops31h 11m
Deal found 9/20![Multiple Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/134:28 pm -
1 stop8h 56m
Mon 11/1611:50 pm -
1 stop9h 36m
Deal found 9/22![Delta logo]()
$468
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 11/239:55 pm -
Nonstop4h 10m
Thu 11/2612:15 am -
Nonstop3h 15m
Deal found 9/23![Southwest logo]()
$331
This Travelocity deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2012:27 pm -
Nonstop3h 54m
Sun 12/276:20 am -
Nonstop3h 17m
Deal found 9/22![Allegiant Air logo]()
$303
This American Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/302:59 pm -
1 stop7h 51m
Fri 11/62:08 pm -
1 stop8h 02m
Deal found 9/22![American Airlines logo]()
$499
Last-minute flights from Illinois to Las VegasDiscover last-minute flight deals from Illinois to Las Vegas. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Las Vegas. Data last updated September 24, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:13 pm -
Nonstop3h 24m
Thu 10/17:05 am -
Nonstop3h 10m
Deal found 9/22![Allegiant Air logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 9/279:29 pm -
Nonstop3h 39m
Thu 10/12:53 pm -
Nonstop3h 20m
Deal found 9/19![Allegiant Air logo]()
$221
This Mytrip deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/42:00 pm -
Nonstop3h 32m
Thu 10/87:05 am -
Nonstop3h 10m
Deal found 9/22![Allegiant Air logo]()
$218
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/104:41 pm -
1 stop8h 31m
Wed 10/142:55 pm -
1 stop13h 39m
Deal found 9/19![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 -
Nonstop3h 32m
Thu 10/296:35 am -
Nonstop3h 10m
Deal found 9/19![Allegiant Air logo]()
$184
This CheapOair deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:00 pm -
Nonstop3h 32m
Thu 10/226:35 am -
Nonstop3h 10m
Deal found 9/23![Allegiant Air logo]()
$179
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/196:30 am -
1 stop28h 04m
Thu 10/2210:52 am -
1 stop12h 07m
Deal found 9/19![Frontier logo]()
$224
This Cheapflightsfares deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/224:20 pm -
1 stop6h 30m
Fri 10/236:15 am -
1 stop22h 19m
Deal found 9/22![Frontier logo]()
$218
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/246:30 am -
1 stop19h 13m
Sat 10/311:38 pm -
1 stop8h 43m
Deal found 9/19![Frontier logo]()
$221
This CheapOair deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/252:10 pm -
Nonstop3h 32m
Thu 10/296:35 am -
Nonstop3h 10m
Deal found 9/22![Allegiant Air logo]()
$169
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/266:30 am -
1 stop28h 02m
Tue 11/36:45 am -
1 stop15h 36m
Deal found 9/19![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 10/266:30 am -
1 stop28h 02m
Thu 10/2911:29 pm -
Nonstop3h 44m
Deal found 9/19![Frontier logo]()
$223
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 September 24, 2026.
Search for one-way flight options from Illinois to Las Vegas. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This CheapOair deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:39 pm -
Nonstop3h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Allegiant Air logo]()
$85
This Cheapflightsfares deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 -
Nonstop3h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Allegiant Air logo]()
$105
This Booking.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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.
Fri 10/168:01 pm -
1 stop26h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 9/279:29 pm -
Nonstop3h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Allegiant Air logo]()
$109
This Cheapflightsfares deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/76:30 am -
1 stop6h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/228:20 pm -
Nonstop3h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Allegiant Air logo]()
$110
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 11/168:13 pm -
1 stop12h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$111
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” 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 12/176:11 am -
Nonstop4h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$112
This CheapOair deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:21 am -
Nonstop4h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Frontier logo]()
$113
This Super.com deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 10/276:30 am -
1 stop28h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Frontier logo]()
$114
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/196:30 am -
1 stop28h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$115
This CheapOair deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:27 pm -
1 stop12h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Frontier logo]()
$115
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 September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $169 (CheapOair) |
One-way from | $85 (CheapOair) |
Popular in | March |
Cheapest in | January |
Average price | $346 |
Good round-trip deal | $195 or less |
Good one-way deal | $65 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 7,457,451 searches. Data last updated September 24, 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
MolineLas Vegas
MLI Moline Quad-City - LAS Las Vegas Harry Reid Intl
MLILAS
Moline Quad-City
Sun 10/11
2:05 pm-3:37 pm
Nonstop3h 32m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$105
Quickest round-trip
PeoriaLas Vegas
PIA Greater Peoria - LAS Las Vegas Harry Reid Intl
PIALAS
Greater Peoria
Sun 9/27
9:53 pm-11:24 pm
Nonstop3h 31m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$106
MolineLas Vegas
MLI Moline Quad-City - LAS Las Vegas Harry Reid Intl
MLILAS
Moline Quad-City
Sun 10/4
2:00 pm-3:32 pm
Nonstop3h 32m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$144
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Mon 12/21
10:45 am-5:36 pm
1 stop8h 51m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$153
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Sun 11/1
7:30 am-8:04 am
1 stop26h 34m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$158
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Tue 10/13
3:40 pm-5:49 pm
Nonstop4h 09m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$159
ChicagoLas Vegas
MDW Chicago Midway - LAS Las Vegas Harry Reid Intl
MDWLAS
Chicago Midway
Sat 12/12
12:55 pm-2:55 pm
Nonstop4h 00m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$159
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Tue 11/3
8:19 pm-10:31 pm
Nonstop4h 12m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$159
ChicagoLas Vegas
MDW Chicago Midway - LAS Las Vegas Harry Reid Intl
MDWLAS
Chicago Midway
Mon 12/21
9:35 pm-11:40 pm
Nonstop4h 05m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$159
ChicagoLas Vegas
MDW Chicago Midway - LAS Las Vegas Harry Reid Intl
MDWLAS
Chicago Midway
Sat 10/17
7:10 pm-9:05 pm
Nonstop3h 55m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$159
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.
MLI-LAS
ORD-LAS
RFD-LAS
PIA-LAS
MDW-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
MLI-LAS
ORD-LAS
RFD-LAS
PIA-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 $251). Flying from Illinois to Las Vegas in March is currently the most expensive (average of $359). 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 September 24, 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 24% on your trip compared to booking a flight in the afternoon.
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 September 24, 2026.
The most flights from USIL to LAS are scheduled on a Tuesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
How much does it cost to fly round-trip from Illinois to Las Vegas?
Airfare is below average for this route at the moment.
Illinois to Las Vegas flights typically cost between $276 and $472 in October.The cheapest round-trip price found within the last 5 days was $218 on Frontier (Oct 22-Oct 23).
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 82 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 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 July 11, 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. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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
Henderson
Kingman
North Las Vegas
Boulder City
Needles
Winchester
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
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 September 24, 2026.
Illinois and Las Vegas flights
Browse other Illinois and Las Vegas flight options. Last updated on September 24, 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 8 airlines flying from Illinois to Las Vegas
Discover the top 8 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 7,457,451 searches. Data last updated September 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$261 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$123 | Average$267 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$125 | Average$340 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$147 | Average$332 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$459 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$178 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$182 | Average$374 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$240 | Average$338 | FlexibilityNo cancel fee | On-time75% |