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Chicago to Las Vegas flights in December 2026 from $109 MDW, ORD, RFD → LAS

Chicago Midway International Airport (MDW), O'Hare International Airport (ORD), Chicago Rockford International Airport (RFD) → McCarran International Airport (LAS)

For departures in December 2026, the cheapest return found recently is $184 with Frontier Airlines, 5 Dec – 6 Dec, found 2 days ago. The cheapest one-way found recently is $109 with Frontier Airlines, 2 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 9 departure dates is usually $184 to $264. Across all 23 departure dates we hold on this route, it is usually $239 to $328. Of the 3 months with enough return fares to compare, December 2026 is usually the cheapest.

Cheapest return found recently

$184

5 Dec – 6 Dec · Frontier Airlines

O'Hare International Airport (ORD) → McCarran International Airport (LAS)

out 1 stop, back nonstop

found 2 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$170

2 Dec – 3 Dec · Frontier Airlines

O'Hare International Airport (ORD) → McCarran International Airport (LAS)

out nonstop, back nonstop

found 3 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
2 Dec – 3 Dec$170Frontier Airlinesout nonstop, back nonstopfound 3 days agoSee prices for these dates
1 Dec – 8 Dec$184Frontier Airlinesout nonstop, back nonstopfound 7 days agoSee prices for these dates
5 Dec – 6 Dec$184Frontier Airlinesout 1 stop, back nonstopfound 2 days agoSee prices for these dates
10 Dec – 11 Dec$235Frontier Airlinesout nonstop, back 1 stopfound 3 days agoSee prices for these dates
3 Dec – 4 Dec$236Frontier Airlinesout nonstop, back nonstopfound 3 days agoSee prices for these dates

Every date we hold

9 departure dates

1 Dec – 8 Dec: $184, found 7 days ago2 Dec – 3 Dec: $170, found 3 days ago3 Dec – 4 Dec: $236, found 3 days ago5 Dec – 6 Dec: $184, found 2 days ago10 Dec – 11 Dec: $235, found 3 days ago17 Dec – 20 Dec: $278, found 4 days ago18 Dec – 22 Dec: $307, found 6 days ago23 Dec – 26 Dec: $264, found 5 days ago30 Dec – 6 Jan 2027: $241, found 7 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 8 Dec$184Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out nonstop, back nonstopfound 7 days agoSee prices for these dates
2 Dec – 3 Dec$170Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out nonstop, back nonstopfound 3 days agoSee prices for these dates
3 Dec – 4 Dec$236Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out nonstop, back nonstopfound 3 days agoSee prices for these dates
5 Dec – 6 Dec$184Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out 1 stop, back nonstopfound 2 days agoSee prices for these dates
10 Dec – 11 Dec$235Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out nonstop, back 1 stopfound 3 days agoSee prices for these dates
17 Dec – 20 Dec$278Allegiant AirChicago Rockford International Airport (RFD) → McCarran International Airport (LAS)out nonstop, back nonstopfound 4 days agoSee prices for these dates
18 Dec – 22 Dec$307Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
23 Dec – 26 Dec$264Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out nonstop, back nonstopfound 5 days agoSee prices for these dates
30 Dec – 6 Jan 2027$241Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)out nonstop, back 1 stopfound 7 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $170.

November 2026From $2858 departure dates14 Nov – 16 Nov · found 4 days agoSee prices for these datesEvery date in November 2026
December 2026From $170Cheapest seen9 departure dates2 Dec – 3 Dec · found 3 days agoSee prices for these dates
January 2027From $1702 departure dates14 Jan 2027 – 19 Jan 2027 · found 7 days agoSee prices for these dates
March 2027From $2994 departure dates10 Mar 2027 – 15 Mar 2027 · found 3 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 8 departure dates is usually $101 to $159. Across all 19 departure dates we hold on this route, it is usually $102 to $183. Of the 3 months with enough one-way fares to compare, December 2026 is usually the cheapest.

Cheapest one-way found recently

$109

2 Dec · Frontier Airlines

O'Hare International Airport (ORD) → McCarran International Airport (LAS)

nonstop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$90

9 Dec · Frontier Airlines

O'Hare International Airport (ORD) → McCarran International Airport (LAS)

nonstop

found 7 days ago

Open this tripCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
9 Dec$90Frontier Airlinesnonstopfound 7 days agoOpen this trip
14 Dec$93Frontier Airlinesnonstopfound 6 days agoOpen this trip
5 Dec$103Frontier Airlinesnonstopfound 6 days agoOpen this trip
2 Dec$109Frontier Airlinesnonstopfound 2 days agoOpen this trip
17 Dec$117Allegiant Airnonstopfound 3 days agoOpen this trip

Every date we hold

8 departure dates

2 Dec: $109, found 2 days ago3 Dec: $253, found 7 days ago5 Dec: $103, found 6 days ago9 Dec: $90, found 7 days ago14 Dec: $93, found 6 days ago17 Dec: $117, found 3 days ago20 Dec: $127, found 6 days ago27 Dec: $255, found 6 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Dec$109Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)nonstopfound 2 days agoOpen this trip
3 Dec$253Allegiant AirChicago Rockford International Airport (RFD) → McCarran International Airport (LAS)nonstopfound 7 days agoOpen this trip
5 Dec$103Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)nonstopfound 6 days agoOpen this trip
9 Dec$90Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)nonstopfound 7 days agoOpen this trip
14 Dec$93Frontier AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)nonstopfound 6 days agoOpen this trip
17 Dec$117Allegiant AirChicago Rockford International Airport (RFD) → McCarran International Airport (LAS)nonstopfound 3 days agoOpen this trip
20 Dec$127Allegiant AirChicago Rockford International Airport (RFD) → McCarran International Airport (LAS)nonstopfound 6 days agoOpen this trip
27 Dec$255American AirlinesO'Hare International Airport (ORD) → McCarran International Airport (LAS)nonstopfound 6 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $86.

November 2026From $86Cheapest seen5 departure dates24 Nov · found 2 days agoOpen this tripEvery date in November 2026
December 2026From $908 departure dates9 Dec · found 7 days agoOpen this trip
February 2027From $1012 departure dates10 Feb 2027 · found 5 days agoOpen this trip
March 2027From $1821 departure date12 Mar 2027 · found 7 days agoOpen this trip
May 2027From $1853 departure dates8 May 2027 · found 8 days agoSee prices for these dates

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