Chicago to Las Vegas MDW, ORD, RFD → LAS
Chicago Midway International Airport (MDW), O'Hare International Airport (ORD), Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS)
The cheapest return found recently is $287 with Frontier Airlines, 21 Nov – 23 Nov, found yesterday. The cheapest one-way found recently is $129 with United Airlines, 4 Dec, found 20 hours ago.
Return
The cheapest return fare on each of 9 departure dates is usually $239 to $251.
Cheapest return found recently
$287
21 Nov – 23 Nov · Frontier Airlines
O'Hare International Airport (ORD) → McCarran International Airport (LAS)
Leaves 5:25 a.m. · Return leaves 11:26 p.m. · 23 h 26 min of travel, both ways together
out 1 stop, back nonstop
found yesterday
Cheapest nonstop return
$239
19 Dec – 26 Dec · Frontier Airlines
O'Hare International Airport (ORD) → McCarran International Airport (LAS)
Leaves 7:35 a.m. · Return leaves 12:04 a.m. · 8 h 12 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Every nonstop date from Chicago to Las Vegas
Found recently, and the cheapest we hold
$287 21 Nov – 23 Novfound yesterdaySee prices for these dates
$116 15 Nov – 19 Novfound 3 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $116 to $197.
At $287, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 9 departure dates from 4 Nov to 19 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
Yes. Among 2-night return fares leaving within 3 days of 21 Nov, 20 Nov – 22 Nov costs $276: $11 less than the cheapest found recently.
Frontier Airlines · O'Hare International Airport (ORD) → McCarran International Airport (LAS) · out 1 stop, back nonstop · found 6 days ago
Every date we hold
177 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 4 Nov – 25 Nov | $250 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 7 Nov – 10 Nov | $255 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 15 Nov – 19 Nov | $116 | Allegiant Air | Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 20 Nov – 23 Nov | $260 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 21 Nov – 23 Nov | $246 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 3 Dec – 6 Dec | $244 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 7 days ago | See prices for these dates |
| 4 Dec – 6 Dec | $251 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found 5 days ago | See prices for these dates |
| 5 Dec – 7 Dec | $179 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 19 Dec – 26 Dec | $239 | Frontier Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $116.
Airlines on the cheapest dates: Frontier Airlines, Allegiant Air.
One-way
The cheapest one-way fare on each of 8 departure dates is usually $117 to $177.
Cheapest one-way found recently
$129
4 Dec · United Airlines
O'Hare International Airport (ORD) → McCarran International Airport (LAS)
Leaves 8:42 p.m. · 4 h 11 min trip
nonstop
found 20 hours ago
Cheapest nonstop one-way
$129
4 Dec · United Airlines
O'Hare International Airport (ORD) → McCarran International Airport (LAS)
Leaves 8:42 p.m. · 4 h 11 min trip
nonstop
found 20 hours ago
Every nonstop date from Chicago to Las Vegas
Found recently, and the cheapest we hold
$129 4 Decfound 20 hours agoOpen this trip
$66 15 Novfound 2 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $60 to $86.
At $129, the cheapest one-way found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 8 departure dates from 12 Nov to 7 May 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 4 Dec to compare.
Every date we hold
67 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 12 Nov | $82 | Allegiant Air | Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS) | nonstop | found 6 days ago | Open this trip |
| 15 Nov | $66 | Allegiant Air | Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS) | nonstop | found 2 days ago | Open this trip |
| 4 Dec | $129 | United Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | nonstop | found 20 hours ago | Open this trip |
| 10 Dec | $175 | Allegiant Air | Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 10 Feb 2027 | $236 | Allegiant Air | Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS) | 1 stop | found 6 days ago | Open this trip |
| 22 Apr 2027 | $133 | Allegiant Air | Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS) | nonstop | found 4 days ago | Open this trip |
| 4 May 2027 | $153 | Alaska Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | 1 stop | found 5 days ago | Open this trip |
| 7 May 2027 | $182 | Alaska Airlines | O'Hare International Airport (ORD) → McCarran International Airport (LAS) | 1 stop | found 5 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $66.
Airlines on the cheapest dates: Allegiant Air, Alaska Airlines, United Airlines.
Premium cabin fares from Chicago to Las Vegas
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 21 Nov – 23 Nov in another cabin: Premium economy · Business · First
Today's prices for 4 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Chicago to Las Vegas?
Return
Fares 14 to 29 days before departure were typically 39% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $299 | $272 | +64% | 21 |
| 7–13 days | $287 | $182 | +58% | 21 |
| 14–29 days | $182 | $116 | Cheapest seen | 25 |
| 30–59 days | $191 | $116 | +5% | 25 |
| 60–89 days | $254 | $180 | +40% | 25 |
| 90–179 days | $264 | $217 | +45% | 12 |
| 180+ days | $327 | $318 | +80% | 22 |
One-way
Fares 14 to 29 days before departure were typically 40% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $135 | $93 | +67% | 11 |
| 7–13 days | $104 | $92 | +28% | 14 |
| 14–29 days | $81 | $60 | Cheapest seen | 24 |
| 30–59 days | $95 | $66 | +17% | 24 |
| 60–89 days | $127 | $97 | +57% | 17 |
| 90–179 days | $236 | $94 | +191% | 16 |
| 180+ days | $153 | $133 | +89% | 9 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Milwaukee → Las Vegas
131 km from Chicago
$333
$46 more than flying from Chicago
7 Nov – 10 Nov · MKE → LAS · out 1 stop, back 1 stop
found 3 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
South Bend → Las Vegas
116 km from Chicago
$257
$128 more than flying from Chicago
26 Oct · SBN → LAS · 2 stops
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 21 Nov – 23 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work