Find flights
When to book
FAQs & Tips
Direct Flights
Deals

LAS

$29 Find cheap flights from Illinois to Las Vegas

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Las Vegas departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/14
Fri 6/21

Search hundreds of travel sites at once for deals on flights to Las Vegas

In the last 7 days travelers have searched 42,393,389 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

January

High season

May

Cheapest flight

$29
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Chicago O'Hare Airport to Las Vegas

FAQs for booking flights from Illinois to Las Vegas

  • How does KAYAK find such low prices on flights from Illinois to Las Vegas?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Las Vegas.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Las Vegas?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Las Vegas from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Las Vegas?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Las Vegas with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Las Vegas?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Las Vegas from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Illinois to Las Vegas?

Find which airlines fly direct from Illinois to Harry Reid Intl, which days they fly and book direct flights.

Nonstop departures

Illinois to Las Vegas Harry Reid Intl

Monday

ANA, Advanced Air, Aer Lingus, +68 more

ANA, Advanced Air, +69 more

Tuesday

ANA, Advanced Air, Aer Lingus, +64 more

ANA, Advanced Air, +65 more

Wednesday

ANA, Advanced Air, Aer Lingus, +66 more

ANA, Advanced Air, +67 more

Thursday

ANA, Advanced Air, Aer Lingus, +68 more

ANA, Advanced Air, +69 more

Friday

ANA, Advanced Air, Aer Lingus, +67 more

ANA, Advanced Air, +68 more

Saturday

ANA, Advanced Air, Aer Lingus, +66 more

ANA, Advanced Air, +67 more

Sunday

ANA, Advanced Air, Aer Lingus, +68 more

ANA, Advanced Air, +69 more

See more direct flights

Nonstop returns

Las Vegas Harry Reid Intl to Illinois

Monday

ANA, Advanced Air, Aer Lingus, +68 more

ANA, Advanced Air, +69 more

Tuesday

ANA, Advanced Air, Aer Lingus, +64 more

ANA, Advanced Air, +65 more

Wednesday

ANA, Advanced Air, Aer Lingus, +66 more

ANA, Advanced Air, +67 more

Thursday

ANA, Advanced Air, Aer Lingus, +68 more

ANA, Advanced Air, +69 more

Friday

ANA, Advanced Air, Aer Lingus, +67 more

ANA, Advanced Air, +68 more

Saturday

ANA, Advanced Air, Aer Lingus, +66 more

ANA, Advanced Air, +67 more

Sunday

ANA, Advanced Air, Aer Lingus, +68 more

ANA, Advanced Air, +69 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to Las Vegas

Recent round-trip flight deals

8/18Sun
nonstopFrontier
3h 37mSTL-LAS
8/29Thu
nonstopFrontier
3h 17mLAS-STL
$62
6/10Mon
nonstopSpirit Airlines
3h 26mSTL-LAS
6/12Wed
nonstopSpirit Airlines
3h 16mLAS-STL
$64
6/11Tue
1 stop
11h 45mSTL-LAS
6/19Wed
nonstop
3h 12mLAS-STL
$71
5/28Tue
nonstop
3h 41mSTL-LAS
5/31Fri
nonstop
3h 18mLAS-STL
$78
8/11Sun
nonstopAllegiant Air
3h 34mRFD-LAS
8/15Thu
nonstopAllegiant Air
3h 29mLAS-RFD
$135
8/18Sun
nonstopAllegiant Air
3h 29mMLI-LAS
8/22Thu
nonstopAllegiant Air
3h 19mLAS-MLI
$150
6/13Thu
1 stopSun Country Air
6h 19mORD-LAS
6/20Thu
1 stopSun Country Air
9h 39mLAS-ORD
$177
6/16Sun
1 stopSun Country Air
5h 58mORD-LAS
6/26Wed
1 stopSun Country Air
14h 58mLAS-ORD
$180
8/3Sat
1 stopAmerican Airlines
6h 26mMLI-LAS
8/7Wed
1 stopAmerican Airlines
9h 52mLAS-MLI
$197
7/1Mon
1 stopAmerican Airlines
8h 21mMLI-LAS
7/5Fri
1 stopAmerican Airlines
7h 30mLAS-MLI
$208

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/21Tue
nonstopSpirit Airlines
4h 02mORD-LAS
$29
6/2Sun
nonstopFrontier
3h 42mSTL-LAS
$29
8/11Sun
nonstopAllegiant Air
3h 34mRFD-LAS
$56
5/26Sun
nonstopAllegiant Air
3h 36mMLI-LAS
$63
5/26Sun
1 stopSun Country Air
16h 21mORD-LAS
$64
5/31Fri
1 stopSun Country Air
16h 26mORD-LAS
$75
6/15Sat
1 stop
16h 10mRFD-LAS
$83
6/6Thu
1 stop
7h 10mORD-LAS
$101
7/6Sat
1 stopDelta
6h 25mORD-LAS
$118
7/10Wed
1 stopDelta
7h 22mMDW-LAS
$118

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Las Vegas

Last minute flight, train and bus deals

5/20Mon
nonstop
3h 48mSTL-LAS
5/24Fri
nonstop
3h 18mLAS-STL
$88
5/20Mon
nonstopFrontier
3h 48mSTL-LAS
5/22Wed
nonstopFrontier
3h 12mLAS-STL
$97
5/19Sun
nonstopFrontier
3h 42mSTL-LAS
5/22Wed
nonstopFrontier
3h 12mLAS-STL
$103
5/18Sat
nonstop
4h 02mORD-LAS
5/29Wed
nonstop
3h 46mLAS-ORD
$108
5/18Sat
nonstopSpirit Airlines
4h 02mORD-LAS
5/28Tue
nonstopSpirit Airlines
3h 41mLAS-ORD
$116
5/18Sat
nonstopSpirit Airlines
4h 02mORD-LAS
6/4Tue
nonstopSpirit Airlines
3h 41mLAS-ORD
$121
5/19Sun
nonstopAllegiant Air
3h 46mRFD-LAS
5/23Thu
nonstopAllegiant Air
3h 24mLAS-RFD
$182
5/19Sun
nonstopAllegiant Air
3h 46mRFD-LAS
5/30Thu
nonstopAllegiant Air
3h 24mLAS-RFD
$212
5/19Sun
multi-stopSun Country Air
16h 36mSTL-LAS
5/23Thu
multi-stopSun Country Air
15h 11mLAS-STL
$270
5/19Sun
multi-stopSun Country Air
16h 36mSTL-LAS
5/25Sat
multi-stopSun Country Air
7h 25mLAS-STL
$280

Search by stops

Search by airline

Search by price