$87+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAS
Dec 8 — Dec 151
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 November 8, 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 November 8, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 11/229:29 pm -
Nonstop3h 37m
Tue 11/246:25 am -
Nonstop3h 11m
Deal found 11/6![Allegiant Air logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 11/229:20 pm -
Nonstop3h 40m
Fri 11/2711:00 am -
Nonstop3h 08m
Deal found 11/5![Allegiant Air logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/139:39 pm -
Nonstop3h 44m
Thu 12/173:11 pm -
Nonstop3h 12m
Deal found 11/3![Allegiant Air logo]()
$195
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair 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 11/4![Allegiant Air logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 12/147:24 pm -
1 stop16h 43m
Sun 1/1010:20 pm -
1 stop18h 13m
Deal found 11/7![Multiple Airlines logo]()
$210
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 11/152:54 pm -
Nonstop3h 40m
Tue 11/246:25 am -
Nonstop3h 11m
Deal found 11/5![Allegiant Air logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/209:13 pm -
Nonstop3h 43m
Thu 12/243:11 pm -
Nonstop3h 12m
Deal found 11/3![Allegiant Air logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/152:54 pm -
Nonstop3h 40m
Thu 11/193:28 pm -
Nonstop3h 11m
Deal found 11/3![Allegiant Air logo]()
$228
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/152:54 pm -
Nonstop3h 40m
Sun 11/223:28 pm -
Nonstop3h 11m
Deal found 11/3![Allegiant Air logo]()
$234
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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.
Thu 12/179:13 pm -
Nonstop3h 43m
Tue 12/226:20 am -
Nonstop3h 12m
Deal found 11/6![Allegiant Air logo]()
$247
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Sat 12/197:35 am -
Nonstop4h 27m
Mon 12/2112:04 am -
Nonstop3h 45m
Deal found 11/3![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/229:02 pm -
Nonstop3h 54m
Tue 12/292:55 pm -
Nonstop3h 17m
Deal found 11/3![Allegiant Air logo]()
$248
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 November 8, 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 November 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 12/147:24 pm -
1 stop16h 43m
Sun 1/1010:20 pm -
1 stop18h 13m
Deal found 11/7![Multiple Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/229:02 pm -
Nonstop3h 54m
Sun 12/276:20 am -
Nonstop3h 17m
Deal found 11/3![Allegiant Air logo]()
$258
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/33:00 pm -
Nonstop4h 11m
Sat 12/511:59 pm -
Nonstop3h 33m
Deal found 11/3![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/127:50 pm -
Nonstop4h 00m
Mon 1/1812:10 am -
Nonstop3h 25m
Deal found 11/4![Southwest logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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.
Wed 1/272:13 pm -
1 stop10h 11m
Mon 2/111:54 am -
1 stop10h 05m
Deal found 11/7![Alaska Airlines logo]()
$274
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/231:26 pm -
1 stop8h 30m
Mon 1/410:25 pm -
1 stop9h 28m
Deal found 11/3![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 11/7. 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 12/44:04 pm -
1 stop9h 28m
Mon 12/76:18 am -
1 stop5h 30m
Deal found 11/7![American Airlines logo]()
$484
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sun 12/612:47 pm -
Nonstop4h 01m
Thu 12/104:31 pm -
1 stop17h 40m
Deal found 11/6![Multiple Airlines logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/1712:27 pm -
Nonstop3h 54m
Tue 12/222:55 pm -
Nonstop3h 17m
Deal found 11/3![Allegiant Air logo]()
$261
This CheapOair deal was found by Cheapflights users on 11/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:37 pm -
Nonstop3h 46m
Tue 11/246:20 am -
Nonstop3h 12m
Deal found 11/7![Allegiant Air logo]()
$265
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/2211:47 am -
1 stop7h 03m
Mon 1/410:25 pm -
1 stop8h 51m
Deal found 11/3![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 11/6. 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.
Wed 12/1610:05 am -
1 stop5h 15m
Sat 1/161:35 pm -
Nonstop3h 40m
Deal found 11/6![Southwest logo]()
$305
This United Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:59 pm -
Nonstop4h 11m
Wed 12/165:15 am -
1 stop6h 12m
Deal found 11/7![United Airlines logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/226:47 pm -
1 stop16h 48m
Tue 1/264:12 pm -
2 stops19h 01m
Deal found 11/5![Alaska Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/128:52 pm -
Nonstop3h 46m
Sun 12/136:35 am -
Nonstop3h 22m
Deal found 11/3![Allegiant Air logo]()
$275
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 1/197:50 pm -
Nonstop4h 00m
Fri 1/225:30 pm -
Nonstop3h 30m
Deal found 11/3![Southwest logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Sat 11/281:32 pm -
Nonstop3h 46m
Tue 12/19:25 am -
1 stop27h 46m
Deal found 11/5![Multiple Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/66:10 am -
1 stop9h 42m
Wed 1/1311:25 pm -
1 stop8h 59m
Deal found 11/4![Delta logo]()
$311
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/3![Allegiant Air logo]()
$279
This Southwest deal was found by Cheapflights users on 11/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/297:50 pm -
Nonstop4h 05m
Sat 1/3012:10 am -
Nonstop3h 25m
Deal found 11/5![Southwest logo]()
$311
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/187:18 pm -
1 stop6h 41m
Mon 12/2111:50 pm -
1 stop8h 10m
Deal found 11/4![United Airlines logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/12:30 pm -
1 stop10h 52m
Sat 4/35:22 pm -
1 stop17h 42m
Deal found 11/5![Alaska Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 1/1010:40 am -
2 stops38h 52m
Thu 1/149:45 pm -
1 stop11h 37m
Deal found 11/3![Multiple Airlines logo]()
$341
This CheapOair deal was found by Cheapflights users on 11/7. 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 CheapOair 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 11/7![Allegiant Air logo]()
$283
This Southwest deal was found by Cheapflights users on 11/7. 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.
Mon 1/49:55 pm -
Nonstop4h 10m
Sat 1/97:30 am -
1 stop5h 15m
Deal found 11/7![Southwest logo]()
$320
This United Airlines deal was found by Cheapflights users on 11/7. 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 3/265:40 pm -
1 stop6h 22m
Wed 3/319:05 am -
1 stop5h 26m
Deal found 11/7![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 1/16:00 am -
1 stop8h 20m
Mon 1/412:00 pm -
1 stop8h 26m
Deal found 11/3![Delta logo]()
$379
This Southwest deal was found by Cheapflights users on 11/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/101:40 pm -
1 stop6h 20m
Mon 12/1412:20 am -
Nonstop3h 20m
Deal found 11/5![Southwest logo]()
$321
This CheapOair deal was found by Cheapflights users on 11/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/612:47 pm -
Nonstop4h 01m
Sun 12/136:35 am -
Nonstop3h 22m
Deal found 11/7![Allegiant Air logo]()
$294
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 2/133:14 pm -
1 stop7h 19m
Tue 2/166:11 am -
1 stop6h 31m
Deal found 11/5![American Airlines logo]()
$489
Last-minute flights from Illinois to Las VegasDiscover last-minute flight deals from Illinois to Las Vegas. Data last updated November 8, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Las Vegas. Data last updated November 8, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair 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 11/4![Allegiant Air logo]()
$196
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 11/152:54 pm -
Nonstop3h 40m
Tue 11/246:25 am -
Nonstop3h 11m
Deal found 11/5![Allegiant Air logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/152:54 pm -
Nonstop3h 40m
Thu 11/193:28 pm -
Nonstop3h 11m
Deal found 11/3![Allegiant Air logo]()
$228
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/152:54 pm -
Nonstop3h 40m
Sun 11/223:28 pm -
Nonstop3h 11m
Deal found 11/3![Allegiant Air logo]()
$234
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 11/229:29 pm -
Nonstop3h 37m
Tue 11/246:25 am -
Nonstop3h 11m
Deal found 11/6![Allegiant Air logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 11/229:20 pm -
Nonstop3h 40m
Fri 11/2711:00 am -
Nonstop3h 08m
Deal found 11/5![Allegiant Air logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/139:39 pm -
Nonstop3h 44m
Thu 12/173:11 pm -
Nonstop3h 12m
Deal found 11/3![Allegiant Air logo]()
$195
This Cheapflightsfares deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/138:37 pm -
1 stop13h 45m
Tue 12/1512:59 am -
1 stop6h 46m
Deal found 11/4![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 12/147:24 pm -
1 stop16h 43m
Sun 1/1010:20 pm -
1 stop18h 13m
Deal found 11/7![Multiple Airlines logo]()
$210
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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.
Thu 12/179:13 pm -
Nonstop3h 43m
Tue 12/226:20 am -
Nonstop3h 12m
Deal found 11/6![Allegiant Air logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/209:13 pm -
Nonstop3h 43m
Thu 12/243:11 pm -
Nonstop3h 12m
Deal found 11/3![Allegiant Air logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/229:02 pm -
Nonstop3h 54m
Tue 12/292:55 pm -
Nonstop3h 17m
Deal found 11/3![Allegiant Air logo]()
$248
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 November 8, 2026.
Search for one-way flight options from Illinois to Las Vegas. Find affordable one-way fares based on user searches. Data last updated November 8, 2026.
This CheapOair deal was found by Cheapflights users on 11/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2812:47 pm -
Nonstop3h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Allegiant Air logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/152:38 pm -
Nonstop3h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Allegiant Air logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/1310:29 pm -
2 stops25h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:02 pm -
2 stops32h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 12/207:45 am -
1 stop8h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$125
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/198:35 pm -
1 stop26h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$125
This CheapOair deal was found by Cheapflights users on 11/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:54 pm -
Nonstop3h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Allegiant Air logo]()
$126
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Fri 12/45:24 pm -
1 stop16h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$126
This Kissandfly.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:52 pm -
Nonstop3h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Allegiant Air logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/201:18 pm -
2 stops12h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$126
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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.
Tue 12/112:33 pm -
2 stops13h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/167:25 am -
2 stops9h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$128
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 November 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $105 (CheapOair) |
One-way from | $87 (CheapOair) |
Popular in | October |
Cheapest in | January |
Average price | $339 |
Good round-trip deal | $175 or less |
Good one-way deal | $137 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 November 8, 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
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Thu 1/7
4:34 pm-11:32 pm
1 stop8h 58m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$127
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 1/7
12:42 pm-2:35 pm
Nonstop3h 53m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$127
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Wed 12/16
7:25 am-2:39 pm
2 stops9h 14m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$128
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Tue 12/22
9:02 pm-10:56 pm
Nonstop3h 54m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$129
ChicagoLas Vegas
ORD Chicago O'Hare Intl - LAS Las Vegas Harry Reid Intl
ORDLAS
Chicago O'Hare Intl
Thu 1/21
2:30 pm-4:44 pm
Nonstop4h 14m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$130
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 2/4
12:42 pm-2:43 pm
Nonstop4h 01m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$132
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Sat 11/28
1:32 pm-3:18 pm
Nonstop3h 46m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$138
ChicagoLas Vegas
MDW Chicago Midway - LAS Las Vegas Harry Reid Intl
MDWLAS
Chicago Midway
Sat 1/9
6:05 am-8:10 am
Nonstop4h 05m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$150
ChicagoLas Vegas
MDW Chicago Midway - LAS Las Vegas Harry Reid Intl
MDWLAS
Chicago Midway
Sat 12/12
6:15 pm-8:20 pm
Nonstop4h 05m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$150
Quickest round-trip
BellevilleLas Vegas
BLV Belleville - LAS Las Vegas Harry Reid Intl
BLVLAS
Belleville
Fri 4/16
1:10 pm-2:50 pm
Nonstop3h 40m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$154
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.
BMI-LAS
RFD-LAS
ORD-LAS
MDW-LAS
MLI-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
BMI-LAS
RFD-LAS
ORD-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 $261). Flying from Illinois to Las Vegas in October is currently the most expensive (average of $413). 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 November 8, 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 30% 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 November 8, 2026.
The most flights from USIL to LAS are scheduled on a Friday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 $274 and $452 in December.The cheapest round-trip price found within the last 5 days was $248 on Frontier (Dec 19-Dec 21).
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
Winchester
North Las Vegas
Boulder City
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 November 8, 2026.
Illinois and Las Vegas flights
Browse other Illinois and Las Vegas flight options. Last updated on November 8, 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 November 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$72 | Average$265 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$130 | Average$272 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$130 | Average$405 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$341 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$184 | Average$465 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$200 | Average$378 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$207 | Average$412 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$240 | Average$316 | FlexibilityNo cancel fee | On-time75% |