Cheap flights from Chicago to Las Vegas
The cheapest round trip from Chicago to Las Vegas that travelers found recently is $230 with a carry-on: a $230 fare on Southwest, which usually includes a carry-on. It leaves Fri, Dec 25 and comes back Thu, Dec 31.
Live prices for Fri, Dec 25 to Thu, Dec 31
Cheapest trips travelers found recently
| Leave | Return | Airline | Airports | Stops | Fare | Carry-on (est.) | Total | Live prices |
|---|---|---|---|---|---|---|---|---|
| Fri, Dec 25 | Thu, Dec 31 | Southwest | MDW → LAS | Nonstop | $230 | Included | $230 | Live price |
| Sat, Nov 7 | Mon, Nov 9 | Alaska Airlines | ORD → LAS | 1 stop | $242 | Included | $242 | Live price |
| Wed, Oct 28 | Sat, Oct 31 | Southwest | MDW → LAS | 1 stop | $265 | Included | $265 | Live price |
| Fri, Oct 16 | Sat, Oct 24 | Southwest | MDW → LAS | 1 stop | $266 | Included | $266 | Live price |
| Wed, Oct 28 | Fri, Oct 30 | Frontier | ORD → LAS | 1 stop | $182 | +$110 | $292 | Live price |
| Sun, Dec 20 | Wed, Dec 23 | Frontier | ORD → LAS | 1 stop | $182 | +$110 | $292 | Live price |
| Sat, Apr 17 | Sat, Apr 24 | Alaska Airlines | ORD → LAS | 1 stop | $318 | Included | $318 | Live price |
| Tue, Oct 27 | Wed, Oct 28 | Frontier | ORD → LAS | 1 stop | $212 | +$110 | $322 | Live price |
| Mon, Nov 2 | Fri, Nov 6 | Frontier | ORD → LAS | Nonstop | $217 | +$110 | $327 | Live price |
| Sat, Nov 14 | Mon, Nov 16 | Frontier | ORD → LAS | 1 stop | $239 | +$110 | $349 | Live price |
Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.
Cheapest month to fly
| Month | Cheapest trip | From | Live prices |
|---|---|---|---|
| October 2026 | Wed, Oct 28 to Sat, Oct 31, 3 nights | $265 | Live price |
| November 2026 | Sat, Nov 7 to Mon, Nov 9, 2 nights | $242 | Live price |
| December 2026 | Fri, Dec 25 to Thu, Dec 31, 6 nights | $230 | Live price |
| April 2027 | Sat, Apr 17 to Sat, Apr 24, 7 nights | $318 | Live price |
Bag fees on this route
What the airlines flying Chicago to Las Vegas usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.
| Airline | Carry-on, each way | Checked bag, each way |
|---|---|---|
| Alaska Airlines | Included | $40 |
| Allegiant | $55 | $50 |
| Frontier | $55 | $50 |
| Southwest | Included | $35 |
Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.
How these prices work
These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).
Not sure where to go? Tell Dipt your budget and vibe and it finds the trip.
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