Ontario to Las Vegas ONT → LAS
Ontario International Airport (ONT) → McCarran International Airport (LAS)
The cheapest return found recently is $104 with Frontier Airlines, 2 Nov – 4 Nov, found yesterday. The cheapest one-way found recently is $48 with Frontier Airlines, 17 Nov, found 12 hours ago.
Return
The cheapest return fare on each of 24 departure dates is usually $101 to $167.
Cheapest return found recently
$104
2 Nov – 4 Nov · Frontier Airlines
Ontario International Airport (ONT) → McCarran International Airport (LAS)
Leaves 2:23 p.m. · Return leaves 8:35 a.m. · 2 h 13 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$104
2 Nov – 4 Nov · Frontier Airlines
Ontario International Airport (ONT) → McCarran International Airport (LAS)
Leaves 2:23 p.m. · Return leaves 8:35 a.m. · 2 h 13 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$104 2 Nov – 4 Novfound yesterdaySee prices for these dates
$66 19 Nov – 26 Novfound 4 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 $44 to $113.
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 24 departure dates from 28 Oct to 23 Mar 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 2-night return fares leaving within 3 days of 2 Nov to compare.
Every date we hold
173 fares on 24 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 28 Oct – 2 Nov | $171 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 29 Oct – 3 Nov | $171 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 7 days ago | See prices for these dates |
| 31 Oct – 5 Nov | $166 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 2 Nov – 5 Nov | $101 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 4 Nov – 5 Nov | $100 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 5 Nov – 8 Nov | $125 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 10 Nov – 12 Nov | $73 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 12 Nov – 12 Nov | $143 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 13 Nov – 14 Nov | $108 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 14 Nov – 16 Nov | $109 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 15 Nov – 16 Nov | $138 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 16 Nov – 17 Nov | $108 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 17 Nov – 18 Nov | $103 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 19 Nov – 26 Nov | $66 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 24 Nov – 10 Jan 2027 | $115 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found yesterday | See prices for these dates |
| 25 Nov – 27 Nov | $137 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 26 Nov – 1 Dec | $84 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 2 Dec – 4 Dec | $87 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 5 Dec – 6 Dec | $143 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 11 Dec – 12 Dec | $83 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 31 Dec – 3 Jan 2027 | $201 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 16 Feb 2027 – 28 Feb 2027 | $179 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 11 Mar 2027 – 14 Mar 2027 | $256 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 23 Mar 2027 – 30 Mar 2027 | $218 | Frontier Airlines | Ontario International Airport (ONT) → 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 $66.
Airlines on the cheapest dates: Frontier Airlines.
One-way
The cheapest one-way fare on each of 30 departure dates is usually $52 to $116.
Cheapest one-way found recently
$48
17 Nov · Frontier Airlines
Ontario International Airport (ONT) → McCarran International Airport (LAS)
Leaves 10:35 a.m. · 1 h 7 min trip
nonstop
found 12 hours ago
Cheapest nonstop one-way
$48
17 Nov · Frontier Airlines
Ontario International Airport (ONT) → McCarran International Airport (LAS)
Leaves 10:35 a.m. · 1 h 7 min trip
nonstop
found 12 hours ago
Found recently, and the cheapest we hold
$48 17 Novfound 12 hours agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $40 to $61.
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 30 departure dates from 25 Oct to 19 Jul 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?
No. We hold one-way fares on 5 other departure dates within 3 days of 17 Nov, and none is cheaper.
Every date we hold
137 fares on 30 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 25 Oct | $104 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 4 days ago | Open this trip |
| 27 Oct | $118 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 2 days ago | Open this trip |
| 28 Oct | $122 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 30 Oct | $174 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | 1 stop | found 7 days ago | Open this trip |
| 31 Oct | $120 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 5 days ago | Open this trip |
| 1 Nov | $88 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 2 Nov | $57 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 21 hours ago | Open this trip |
| 3 Nov | $50 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found today | Open this trip |
| 4 Nov | $49 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 3 days ago | Open this trip |
| 6 Nov | $49 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 4 days ago | Open this trip |
| 10 Nov | $48 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 4 days ago | Open this trip |
| 11 Nov | $57 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 21 hours ago | Open this trip |
| 15 Nov | $82 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 16 Nov | $60 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 17 Nov | $48 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 12 hours ago | Open this trip |
| 18 Nov | $48 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 3 days ago | Open this trip |
| 19 Nov | $51 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 3 days ago | Open this trip |
| 20 Nov | $91 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 3 days ago | Open this trip |
| 24 Nov | $51 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 2 Dec | $58 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 3 Dec | $61 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 16 Dec | $58 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 23 hours ago | Open this trip |
| 20 Dec | $85 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 5 days ago | Open this trip |
| 29 Dec | $63 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 5 days ago | Open this trip |
| 1 Jan 2027 | $68 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 5 days ago | Open this trip |
| 2 Jan 2027 | $116 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 2 days ago | Open this trip |
| 7 Feb 2027 | $116 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found yesterday | Open this trip |
| 6 Mar 2027 | $150 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 2 days ago | Open this trip |
| 10 Mar 2027 | $125 | Frontier Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 4 days ago | Open this trip |
| 19 Jul 2027 | $189 | Southwest Airlines | Ontario International Airport (ONT) → McCarran International Airport (LAS) | nonstop | found 6 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $48.
Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines.
Premium cabin fares from Ontario 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 2 Nov – 4 Nov in another cabin: Premium economy · Business · First
Today's prices for 17 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ontario to Las Vegas?
Return
Fares 14 to 29 days before departure were typically 77% 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 | $317 | $245 | +334% | 24 |
| 7–13 days | $171 | $44 | +134% | 25 |
| 14–29 days | $73 | $44 | Cheapest seen | 25 |
| 30–59 days | $80 | $66 | +10% | 25 |
| 60–89 days | $119 | $111 | +63% | 23 |
| 90–179 days | $137 | $121 | +88% | 24 |
| 180+ days | $362 | $300 | +396% | 21 |
One-way
Fares 14 to 29 days before departure were typically 63% 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 | $131 | $86 | +173% | 9 |
| 7–13 days | $125 | $94 | +160% | 14 |
| 14–29 days | $48 | $42 | Cheapest seen | 25 |
| 30–59 days | $51 | $40 | +6% | 25 |
| 60–89 days | $63 | $48 | +31% | 25 |
| 90–179 days | $100 | $60 | +108% | 25 |
| 180+ days | $188 | $179 | +292% | 25 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Los Angeles → Las Vegas
56 km from Ontario
$150
$46 more than flying from Ontario
2 Nov – 4 Nov · LAX → LAS · out nonstop, back nonstop
found yesterday
Long Beach → Las Vegas
60 km from Ontario
$192
$88 more than flying from Ontario
24 Nov – 10 Jan 2027 · LGB → LAS · out nonstop, back nonstop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Los Angeles → Las Vegas
56 km from Ontario
$29
$19 less than flying from Ontario
3 Dec · SNA → LAS · nonstop
found 19 hours ago
Long Beach → Las Vegas
60 km from Ontario
$75
$27 more than flying from Ontario
2 Dec · LGB → LAS · nonstop
found yesterday
Palm Springs → Las Vegas
104 km from Ontario
$158
$110 more than flying from Ontario
28 Oct · PSP → LAS · 2 stops
found yesterday
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 2 Nov – 4 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