$72+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAS
Sep 9 — Sep 161
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
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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 August 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 August 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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 11/152:38 pm -
Nonstop3h 32m
Tue 11/242:58 pm -
Nonstop3h 08m
Deal found 8/5![Allegiant Air logo]()
$135
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip 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 8/5![Allegiant Air logo]()
$145
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:31 pm -
Nonstop3h 32m
Sun 8/307:05 am -
Nonstop3h 11m
Deal found 8/5![Allegiant Air logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:00 pm -
Nonstop3h 32m
Thu 10/226:35 am -
Nonstop3h 10m
Deal found 8/7![Allegiant Air logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 8/8. 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 11/12:10 pm -
Nonstop3h 32m
Thu 11/56:35 am -
Nonstop3h 18m
Deal found 8/8![Allegiant Air logo]()
$159
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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 -
Nonstop3h 32m
Sun 8/237:05 am -
Nonstop3h 11m
Deal found 8/6![Allegiant Air logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:05 pm -
Nonstop3h 32m
Thu 10/157:05 am -
Nonstop3h 10m
Deal found 8/8![Allegiant Air logo]()
$167
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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.
Fri 8/1412:45 pm -
Nonstop3h 40m
Fri 8/211:14 pm -
Nonstop3h 15m
Deal found 8/5![Allegiant Air logo]()
$179
This Cheapflightsfares deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:52 pm -
Nonstop3h 31m
Thu 9/171:24 pm -
Nonstop3h 19m
Deal found 8/9![Allegiant Air logo]()
$183
This deal was found by Cheapflights users on 8/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:17 pm -
Nonstop3h 35m
Sun 9/276:00 am -
Nonstop3h 17m
Deal found 8/7![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:58 pm -
1 stop5h 45m
Fri 9/116:45 am -
1 stop10h 32m
Deal found 8/7![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 10/218:10 pm -
1 stop13h 15m
Fri 10/237:57 pm -
Nonstop3h 20m
Deal found 8/7![Frontier logo]()
$199
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 August 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 August 10, 2026.
This FlightHub deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:29 pm -
Nonstop3h 39m
Thu 9/243:15 pm -
Nonstop3h 24m
Deal found 8/8![Allegiant Air logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 pm -
Nonstop3h 43m
Tue 11/38:14 pm -
1 stop14h 09m
Deal found 8/7![Multiple Airlines logo]()
$236
This Southwest deal was found by Cheapflights users on 8/6. 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.
Sun 9/611:00 am -
1 stop5h 15m
Sat 9/126:35 am -
Nonstop3h 30m
Deal found 8/6![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:16 pm -
1 stop8h 20m
Sun 9/1311:01 pm -
1 stop9h 12m
Deal found 8/8![Delta logo]()
$305
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 8/299:17 am -
Nonstop4h 06m
Sat 8/2911:55 pm -
Nonstop3h 30m
Deal found 8/4![United Airlines logo]()
$305
This Booking.com deal was found by Cheapflights users on 8/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:03 pm -
Nonstop3h 43m
Sun 10/43:26 pm -
Nonstop3h 20m
Deal found 8/4![Allegiant Air logo]()
$203
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:01 am -
1 stop8h 03m
Sun 8/308:45 am -
1 stop8h 36m
Deal found 8/6![Alaska Airlines logo]()
$433
This CheapOair deal was found by Cheapflights users on 8/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/139:29 pm -
Nonstop3h 39m
Thu 9/173:15 pm -
Nonstop3h 24m
Deal found 8/5![Allegiant Air logo]()
$207
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:01 pm -
1 stop7h 23m
Sat 9/1212:45 pm -
1 stop8h 44m
Deal found 8/8![American Airlines logo]()
$509
This FlightHub deal was found by Cheapflights users on 8/9. 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 FlightHub 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 8/9![Allegiant Air logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:29 pm -
Nonstop3h 39m
Thu 9/243:15 pm -
Nonstop3h 24m
Deal found 8/9![Allegiant Air logo]()
$214
This Southwest deal was found by Cheapflights users on 8/6. 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 10/228:25 pm -
Nonstop3h 50m
Fri 10/306:30 am -
Nonstop3h 25m
Deal found 8/6![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 8/4. 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.
Mon 10/55:09 pm -
1 stop8h 27m
Tue 10/1311:45 pm -
1 stop8h 37m
Deal found 8/4![Delta logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 10/159:03 pm -
Nonstop3h 43m
Thu 10/222:10 pm -
Nonstop3h 20m
Deal found 8/8![Allegiant Air logo]()
$215
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Thu 9/35:00 am -
1 stop6h 09m
Mon 9/711:50 pm -
Nonstop3h 30m
Deal found 8/7![United Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 8/4. 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.
Fri 10/165:04 pm -
1 stop7h 02m
Wed 10/216:00 am -
1 stop8h 24m
Deal found 8/4![Delta logo]()
$305
This Southwest deal was found by Cheapflights users on 8/5. 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.
Wed 9/28:35 am -
1 stop6h 15m
Wed 9/98:45 am -
1 stop5h 50m
Deal found 8/5![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 8/292:00 pm -
Nonstop4h 02m
Wed 9/24:34 pm -
1 stop5h 25m
Deal found 8/4![United Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:53 pm -
Nonstop3h 43m
Sun 11/226:35 am -
Nonstop3h 12m
Deal found 8/7![Allegiant Air logo]()
$217
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
1 stop7h 48m
Wed 10/1411:35 pm -
1 stop6h 06m
Deal found 8/8![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:55 pm -
Nonstop3h 55m
Tue 9/228:45 am -
1 stop5h 50m
Deal found 8/9![Southwest logo]()
$312
This Southwest deal was found by Cheapflights users on 8/5. 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.
Sun 10/118:25 pm -
Nonstop3h 50m
Thu 10/157:30 pm -
Nonstop3h 25m
Deal found 8/5![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm -
1 stop5h 56m
Sat 9/2612:40 am -
1 stop5h 50m
Deal found 8/5![Delta logo]()
$326
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Mon 9/286:29 am -
2 stops13h 58m
Tue 9/295:28 pm -
2 stops21h 42m
Deal found 8/7![Alaska Airlines logo]()
$437
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 pm -
Nonstop3h 43m
Sun 11/12:43 pm -
Nonstop3h 20m
Deal found 8/6![Allegiant Air logo]()
$253
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:30 am -
2 stops8h 36m
Tue 9/19:37 am -
2 stops7h 54m
Deal found 8/8![United Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 8/7. 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.
Wed 9/3010:30 am -
1 stop5h 05m
Mon 10/510:10 pm -
1 stop5h 35m
Deal found 8/7![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 8/4. 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.
Fri 9/118:25 am -
2 stops14h 24m
Wed 9/301:42 pm -
1 stop5h 51m
Deal found 8/4![Delta logo]()
$332
This Booking.com deal was found by Cheapflights users on 8/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:35 pm -
Nonstop3h 46m
Sun 8/303:18 pm -
Nonstop3h 27m
Deal found 8/4![Allegiant Air logo]()
$254
This Southwest deal was found by Cheapflights users on 8/5. 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.
Tue 9/2210:10 am -
1 stop5h 15m
Fri 9/2510:00 am -
1 stop5h 00m
Deal found 8/5![Southwest logo]()
$317
Last-minute flights from Illinois to Las VegasDiscover last-minute flight deals from Illinois to Las Vegas. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Las Vegas. Data last updated August 10, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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.
Fri 8/1412:45 pm -
Nonstop3h 40m
Fri 8/211:14 pm -
Nonstop3h 15m
Deal found 8/5![Allegiant Air logo]()
$179
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:31 pm -
Nonstop3h 32m
Sun 8/307:05 am -
Nonstop3h 11m
Deal found 8/5![Allegiant Air logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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 -
Nonstop3h 32m
Sun 8/237:05 am -
Nonstop3h 11m
Deal found 8/6![Allegiant Air logo]()
$161
This Cheapflightsfares deal was found by Cheapflights users on 8/9. 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 8/1612:31 pm -
Nonstop3h 32m
Thu 8/207:05 am -
Nonstop3h 11m
Deal found 8/9![Allegiant Air logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 8/9. 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 8/301:06 pm -
Nonstop3h 25m
Thu 9/37:05 am -
Nonstop3h 18m
Deal found 8/9![Allegiant Air logo]()
$200
This Cheapflightsfares deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:13 pm -
Nonstop3h 24m
Thu 9/177:05 am -
Nonstop3h 18m
Deal found 8/7![Allegiant Air logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:58 pm -
1 stop5h 45m
Fri 9/116:45 am -
1 stop10h 32m
Deal found 8/7![Frontier logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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.
Fri 9/118:52 pm -
Nonstop3h 31m
Thu 9/171:24 pm -
Nonstop3h 19m
Deal found 8/6![Allegiant Air logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/118:10 pm -
1 stop14h 18m
Wed 9/169:45 am -
1 stop7h 32m
Deal found 8/7![Frontier logo]()
$200
This deal was found by Cheapflights users on 8/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:17 pm -
Nonstop3h 35m
Sun 9/276:00 am -
Nonstop3h 17m
Deal found 8/7![Frontier logo]()
$188
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip 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 8/5![Allegiant Air logo]()
$145
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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 9/271:13 pm -
Nonstop3h 24m
Thu 10/17:05 am -
Nonstop3h 10m
Deal found 8/6![Allegiant Air logo]()
$193
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 August 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 August 10, 2026.
This Super.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am -
Nonstop3h 33m
Deal found 8/7![Frontier logo]()
$72
This Super.com deal was found by Cheapflights users on 8/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:31 pm -
Nonstop3h 32m
Deal found 8/6![Allegiant Air logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 8/247:06 pm -
Nonstop3h 30m
Deal found 8/6![Allegiant Air logo]()
$77
This Trip.com deal was found by Cheapflights users on 8/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:53 pm -
Nonstop3h 31m
Deal found 8/7![Allegiant Air logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 8/217:19 pm -
Nonstop3h 30m
Deal found 8/6![Allegiant Air logo]()
$82
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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 10/112:05 pm -
Nonstop3h 32m
Deal found 8/5![Allegiant Air logo]()
$83
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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.
Fri 8/287:19 pm -
Nonstop3h 30m
Deal found 8/5![Allegiant Air logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 8/1412:45 pm -
Nonstop3h 40m
Deal found 8/6![Allegiant Air logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:58 pm -
1 stop5h 45m
Deal found 8/7![Frontier logo]()
$101
This Cheapflightsfares deal was found by Cheapflights users on 8/8. 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.
Fri 8/286:45 pm -
Nonstop3h 35m
Deal found 8/8![Frontier logo]()
$102
This Frontier deal was found by Cheapflights users on 8/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:32 pm -
Nonstop3h 43m
Deal found 8/9![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:10 pm -
1 stop21h 32m
Deal found 8/8![Frontier logo]()
$105
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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 (Mytrip) |
One-way from | $72 (Super.com) |
Popular in | March |
Cheapest in | January |
Average price | $298 |
Good round-trip deal | $171 or less |
Good one-way deal | $123 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 August 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 Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 9/17
9:29 pm-11:08 pm
Nonstop3h 39m
Las Vegas Harry Reid Intl
Thu 9/24
3:15 pm-8:39 pm
Nonstop3h 24m
$203
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 10/1
9:03 pm-10:46 pm
Nonstop3h 43m
Las Vegas Harry Reid Intl
Sun 10/4
3:26 pm-8:46 pm
Nonstop3h 20m
$203
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Sun 9/13
9:29 pm-11:08 pm
Nonstop3h 39m
Las Vegas Harry Reid Intl
Thu 9/17
3:15 pm-8:39 pm
Nonstop3h 24m
$207
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 10/1
9:03 pm-10:46 pm
Nonstop3h 43m
Las Vegas Harry Reid Intl
Thu 10/8
2:53 pm-8:13 pm
Nonstop3h 20m
$214
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Sun 9/20
9:29 pm-11:08 pm
Nonstop3h 39m
Las Vegas Harry Reid Intl
Thu 9/24
3:15 pm-8:39 pm
Nonstop3h 24m
$214
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 10/15
9:03 pm-10:46 pm
Nonstop3h 43m
Las Vegas Harry Reid Intl
Thu 10/22
2:10 pm-7:30 pm
Nonstop3h 20m
$215
Quickest round-trip
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Sun 11/1
8:53 pm-10:36 pm
Nonstop3h 43m
Las Vegas Harry Reid Intl
Sun 11/22
6:35 am-11:47 am
Nonstop3h 12m
$217
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 10/29
8:20 pm-10:03 pm
Nonstop3h 43m
Las Vegas Harry Reid Intl
Tue 11/3
8:14 pm-12:23 pm
1 stop14h 09m
$236
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 10/29
8:20 pm-10:03 pm
Nonstop3h 43m
Las Vegas Harry Reid Intl
Sun 11/1
2:43 pm-8:03 pm
Nonstop3h 20m
$253
ChicagoLas Vegas
RFD Chicago Greater Rockford - LAS Las Vegas Harry Reid Intl
RFDLAS
Chicago Greater Rockford
Thu 8/27
9:35 pm-11:21 pm
Nonstop3h 46m
Las Vegas Harry Reid Intl
Sun 8/30
3:18 pm-8:45 pm
Nonstop3h 27m
$254
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.
STL-LAS
MLI-LAS
PIA-LAS
RFD-LAS
ORD-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
STL-LAS
MLI-LAS
PIA-LAS
RFD-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 $250). 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 August 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 25% 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 August 10, 2026.
The most flights from USIL to LAS are scheduled on a Saturday (46 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (12 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 $222 and $388 in September.The cheapest round-trip price found within the last 5 days was $202 on Frontier (Sep 12-Sep 15).
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. Friday 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
Henderson
Mesquite
Kingman
North Las Vegas
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
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 August 10, 2026.
Illinois and Las Vegas flights
Browse other Illinois and Las Vegas flight options. Last updated on August 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 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 2,558,603 searches. Data last updated August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$261 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$119 | Average$270 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$125 | Average$340 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$147 | Average$338 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$160 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$164 | Average$390 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$171 | Average$370 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$240 | Average$338 | FlexibilityNo cancel fee | On-time75% |