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Find cheap flights from Illinois to Las Vegas from $34

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
Sun 6/9
Sun 6/16

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In the last 7 days travelers have searched 43,895,468 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

October

Cheapest flight

$34
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from St. Louis 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

6/12Wed
nonstop
3h 27mSTL-LAS
6/18Tue
nonstop
3h 12mLAS-STL
$67
5/26Sun
nonstopFrontier
3h 48mSTL-LAS
5/31Fri
nonstopFrontier
3h 12mLAS-STL
$69
5/21Tue
nonstopFrontier
3h 41mSTL-LAS
5/24Fri
nonstopFrontier
3h 12mLAS-STL
$70
5/21Tue
nonstop
3h 41mSTL-LAS
5/24Fri
nonstop
3h 18mLAS-STL
$76
6/1Sat
1 stopSpirit Airlines
13h 03mSTL-LAS
6/5Wed
nonstopSpirit Airlines
3h 16mLAS-STL
$96
5/31Fri
nonstopSpirit Airlines
3h 33mSTL-LAS
6/3Mon
nonstopSpirit Airlines
3h 18mLAS-STL
$102
8/11Sun
nonstopAllegiant Air
3h 34mRFD-LAS
8/15Thu
nonstopAllegiant Air
3h 29mLAS-RFD
$132
8/1Thu
nonstopAllegiant Air
3h 24mMLI-LAS
8/15Thu
nonstopAllegiant Air
3h 19mLAS-MLI
$172
8/10Sat
1 stopAmerican Airlines
7h 51mMLI-LAS
8/15Thu
1 stopAmerican Airlines
7h 46mLAS-MLI
$219
8/1Thu
1 stopAmerican Airlines
7h 39mMLI-LAS
8/15Thu
1 stopAmerican Airlines
7h 46mLAS-MLI
$243

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Recent one-way flight deals

5/21Tue
nonstopFrontier
3h 48mSTL-LAS
$34
5/21Tue
nonstopFrontier
4h 10mMDW-LAS
$39
5/27Mon
nonstopSpirit Airlines
3h 33mSTL-LAS
$42
5/26Sun
1 stopSun Country Air
16h 21mORD-LAS
$60
5/28Tue
nonstopSpirit Airlines
4h 02mORD-LAS
$63
6/9Sun
nonstopAllegiant Air
3h 38mRFD-LAS
$71
6/14Fri
1 stopSun Country Air
15h 38mORD-LAS
$76
8/23Fri
nonstopAllegiant Air
3h 32mPIA-LAS
$78
5/28Tue
1 stop
26h 40mORD-LAS
$79
6/15Sat
1 stop
16h 10mRFD-LAS
$83

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Last minute flights from Illinois to Las Vegas

Last minute flight, train and bus deals

5/15Wed
nonstopFrontier
3h 43mSTL-LAS
5/21Tue
nonstopFrontier
3h 12mLAS-STL
$90
5/14Tue
nonstopFrontier
4h 04mMDW-LAS
5/17Fri
nonstopFrontier
3h 35mLAS-MDW
$114
5/14Tue
nonstop
4h 02mORD-LAS
5/18Sat
nonstop
3h 46mLAS-ORD
$140
5/14Tue
nonstop
4h 02mORD-LAS
5/21Tue
nonstop
3h 46mLAS-ORD
$167
5/14Tue
nonstopSpirit Airlines
4h 02mORD-LAS
5/21Tue
multi-stopSpirit Airlines
21h 23mLAS-ORD
$169
5/11Sat
nonstopSpirit Airlines
4h 02mORD-LAS
5/18Sat
multi-stopSpirit Airlines
18h 13mLAS-ORD
$171
5/12Sun
nonstopAllegiant Air
3h 46mRFD-LAS
5/19Sun
nonstopAllegiant Air
3h 24mLAS-RFD
$227
5/13Mon
nonstopAllegiant Air
3h 40mPIA-LAS
5/17Fri
nonstopAllegiant Air
3h 15mLAS-PIA
$231
5/14Tue
multi-stopDelta
8h 33mORD-LAS
5/15Wed
multi-stopDelta
6h 07mLAS-ORD
$284
5/14Tue
multi-stopDelta
8h 47mMDW-LAS
5/15Wed
multi-stopDelta
7h 31mLAS-MDW
$354

Search by stops

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