Las Vegas to Ontario LAS → ONT
McCarran International Airport (LAS) → Ontario International Airport (ONT)
The cheapest return found recently is $88 with Frontier Airlines, 3 Nov – 2 Dec, found yesterday. The cheapest one-way found recently is $49 with Frontier Airlines, 3 Nov, found today.
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$88
3 Nov – 2 Dec · Frontier Airlines
McCarran International Airport (LAS) → Ontario International Airport (ONT)
Leaves 8:35 a.m. · Return leaves 7:00 a.m. · 2 h 21 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$88
3 Nov – 2 Dec · Frontier Airlines
McCarran International Airport (LAS) → Ontario International Airport (ONT)
Leaves 8:35 a.m. · Return leaves 7:00 a.m. · 2 h 21 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$88 3 Nov – 2 Decfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 18 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $88 to $216.
At $88, the cheapest return found recently is at the low end of that range.
18 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?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 29-night return fares leaving within 3 days of 3 Nov to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 3 Nov – 2 Dec | $88 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | out nonstop, back nonstop | found yesterday | See prices for these dates |
Airlines on the cheapest dates: Frontier Airlines.
One-way
The cheapest one-way fare on each of 8 departure dates is usually $55 to $112.
Cheapest one-way found recently
$49
3 Nov · Frontier Airlines
McCarran International Airport (LAS) → Ontario International Airport (ONT)
Leaves 8:35 a.m. · 1 h 5 min trip
nonstop
found today
Cheapest nonstop one-way
$49
3 Nov · Frontier Airlines
McCarran International Airport (LAS) → Ontario International Airport (ONT)
Leaves 8:35 a.m. · 1 h 5 min trip
nonstop
found today
Found recently, and the cheapest we hold
$49 3 Novfound todayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 19 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $49 to $153.
At $49, the cheapest one-way found recently is at the low end of that range.
19 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 25 Oct to 4 Jan 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 3 other departure dates within 3 days of 3 Nov, and none is cheaper.
Every date we hold
8 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 25 Oct | $108 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found 4 days ago | Open this trip |
| 26 Oct | $124 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | 1 stop | found 3 days ago | Open this trip |
| 1 Nov | $82 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found 4 days ago | Open this trip |
| 2 Nov | $50 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found yesterday | Open this trip |
| 3 Nov | $49 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found today | Open this trip |
| 5 Nov | $57 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found yesterday | Open this trip |
| 29 Nov | $153 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found 6 days ago | Open this trip |
| 4 Jan 2027 | $59 | Frontier Airlines | McCarran International Airport (LAS) → Ontario International Airport (ONT) | nonstop | found today | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $49.
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Las Vegas to Ontario
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 3 Nov – 2 Dec in another cabin: Premium economy · Business · First
Today's prices for 3 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Las Vegas to Ontario?
Return
Not enough history yet: in 18 days of return prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
One-way
Fares 60 to 89 days before departure were typically 39% lower than 7 to 13 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (19 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 |
|---|---|---|---|---|
| 7–13 days | $108 | $108 | +64% | 7 |
| 14–29 days | $108 | $49 | +64% | 11 |
| 60–89 days | $66 | $66 | Cheapest seen | 7 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Las Vegas → Los Angeles
56 km from Ontario
$104
$16 more than flying to Ontario
24 Dec – 4 Jan 2027 · LAS → LAX · out nonstop, back nonstop
found today
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Las Vegas → Los Angeles
56 km from Ontario
$40
$9 less than flying to Ontario
2 Dec · LAS → LAX · nonstop
found 6 hours ago
Las Vegas → Palm Springs
104 km from Ontario
$121
$72 more than flying to Ontario
18 Nov · LAS → PSP · 1 stop
found 6 days ago
Las Vegas → Long Beach
60 km from Ontario
$131
$82 more than flying to Ontario
14 May 2027 · LAS → LGB · nonstop
found 6 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 3 Nov – 2 Dec. 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