Cheap flights from Ontario to New Orleans from $547 ONT → MSY
Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY)
The cheapest return found recently is $547 with Southwest Airlines, 23 Dec – 26 Dec, found 19 hours ago.
- Cheapest return found recently
- $547, 23 Dec to 26 Dec
- Usual return price
- $335 to $510
- Cheapest month to fly
- December 2026, return fares from $248 found in the last 7 days
Return
The cheapest return fare on each of 5 departure dates is usually $335 to $510.
Cheapest return found recently
$547
23 Dec – 26 Dec · Southwest Airlines
Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY)
Leaves 9:35 p.m. · Return leaves 9:00 a.m. · 24 h 12 min of travel, both ways together
out 2 stops, back 1 stop · via McCarran International Airport (LAS), Nashville International Airport (BNA), Orlando International Airport (MCO) · separate tickets likely: collect your bags and check in again · overnight connection · 7 h connection
found 19 hours ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$547 23 Dec – 26 Decfound 19 hours agoSee prices for these dates
$248 11 Dec – 15 Decfound 5 days agoSee prices for these dates
What have prices looked like?
Over 42 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $229 to $475.
At $547, the cheapest return found recently is above that range.
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 5 departure dates from 20 Nov to 12 Feb 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 3-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
56 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Nov – 24 Nov | $658 | Frontier Airlines | Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY) | out 2 stops, back 1 stop | found 3 days ago | See prices for these dates |
| 8 Dec – 10 Dec | $335 | Breeze Airways | Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY) | out 1 stop, back nonstop | found 3 days ago | See prices for these dates |
| 11 Dec – 15 Dec | $248 | Frontier Airlines | Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY) | out 1 stop, back nonstop | found 5 days ago | See prices for these dates |
| 23 Dec – 26 Dec | $510 | Southwest Airlines | Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY) | out 1 stop, back nonstop | found 4 days ago | See prices for these dates |
| 12 Feb 2027 – 15 Feb 2027 | $382 | Frontier Airlines | Ontario International Airport (ONT) → Louis Armstrong New Orleans International Airport (MSY) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $248.
Airlines on the cheapest dates: Frontier Airlines, Breeze Airways, Southwest Airlines.
Premium cabin fares from Ontario to New Orleans
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 23 Dec – 26 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ontario to New Orleans?
Return
The cheapest fares were 90 to 179 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (42 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 |
|---|---|---|---|---|
| 14–29 days | $442 | $229 | +5% | 20 |
| 30–59 days | $455 | $229 | +8% | 19 |
| 60–89 days | $430 | $303 | +2% | 30 |
| 90–179 days | $423 | $303 | Cheapest seen | 25 |
| 180+ days | $648 | $529 | +53% | 11 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Los Angeles → New Orleans
56 km from Ontario
$470
$77 less than flying from Ontario
23 Dec – 26 Dec · LAX → MSY · out 1 stop, back 1 stop
found 19 hours ago
Long Beach → New Orleans
60 km from Ontario
$641
$94 more than flying from Ontario
23 Dec – 26 Dec · LGB → MSY · out 1 stop, back 1 stop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Los Angeles → New Orleans
56 km from Ontario
$167
8 Dec · LAX → MSY · stops unknown
found today
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 23 Dec – 26 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Ontario to New Orleans?
The cheapest return found recently is $547 with Southwest Airlines, 23 Dec to 26 Dec, found 19 hours ago. The cheapest return we hold, of any age, is $248 with Frontier Airlines, 11 Dec to 15 Dec, found 5 days ago. The cheapest return fare on each of 5 departure dates is usually $335 to $510.
What is the cheapest month to fly from Ontario to New Orleans?
December 2026 is the cheapest month for a return, from $248, 11 Dec to 15 Dec, found 5 days ago.
How far ahead should I book a flight from Ontario to New Orleans?
In 42 days of prices between 24 Sept and 12 Nov, return fares were cheapest 90 to 179 days before departure.
Which airlines have the cheapest flights from Ontario to New Orleans?
Between 20 Nov and 12 Feb 2027, Frontier Airlines has the cheapest return on 3 of the 5 departure dates we hold, Breeze Airways on 1 and Southwest Airlines on 1.
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