New York to Ontario EWR, JFK, LGA → ONT
Newark Liberty International Airport (EWR), John F. Kennedy International Airport (JFK), LaGuardia Airport (LGA) → Ontario International Airport (ONT)
The cheapest return found recently is $342 with Alaska Airlines, 4 Feb 2027 – 10 Feb 2027, found 22 hours ago. The cheapest one-way found recently is $172 with Alaska Airlines, 4 Feb 2027, found today.
Return
The cheapest return fare on each of 17 departure dates is usually $344 to $457.
Cheapest return found recently
$342
4 Feb 2027 – 10 Feb 2027 · Alaska Airlines
John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT)
Leaves 1:00 p.m. · Return leaves 7:10 a.m. · 21 h 54 min of travel, both ways together
out 1 stop, back 1 stop · via Seattle-Tacoma International Airport (SEA), Portland International Airport (PDX)
found 22 hours ago
Cheapest nonstop return
$419
17 Nov – 23 Nov · United Airlines
LaGuardia Airport (LGA) → Ontario International Airport (ONT)
Leaves 3:29 p.m. · Return leaves 8:18 p.m. · 13 h 49 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$342 4 Feb 2027 – 10 Feb 2027found 22 hours agoSee prices for these dates
$311 5 Nov – 11 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 $216 to $308.
At $342, 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 17 departure dates from 20 Oct to 10 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 6-night return fares leaving within 3 days of 4 Feb 2027 to compare.
Every date we hold
161 fares on 17 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Oct – 10 Nov | $686 | United Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 22 Oct – 29 Oct | $478 | American Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 23 Oct – 4 Nov | $457 | Frontier Airlines | Newark Liberty International Airport (EWR) → Ontario International Airport (ONT) | out 1 stop, back nonstop | found yesterday | See prices for these dates |
| 29 Oct – 31 Oct | $345 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 30 Oct – 8 Nov | $389 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 1 Nov – 6 Nov | $363 | United Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 5 Nov – 11 Nov | $311 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 13 Nov – 19 Nov | $373 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out nonstop, back 1 stop | found 5 days ago | See prices for these dates |
| 17 Nov – 23 Nov | $325 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 26 Nov – 6 Dec | $323 | Frontier Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 8 Dec – 11 Dec | $371 | Alaska Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 27 Dec – 11 Jan 2027 | $658 | Alaska Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 30 Dec – 5 Jan 2027 | $381 | American Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 12 Jan 2027 – 26 Jan 2027 | $344 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 27 Jan 2027 – 10 Feb 2027 | $349 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 4 Feb 2027 – 10 Feb 2027 | $342 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 22 hours ago | See prices for these dates |
| 10 Mar 2027 – 24 Mar 2027 | $520 | American Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $311.
Airlines on the cheapest dates: Alaska Airlines, American Airlines, Southwest Airlines, United Airlines, Frontier Airlines.
One-way
The cheapest one-way fare on each of 18 departure dates is usually $169 to $199.
Cheapest one-way found recently
$172
4 Feb 2027 · Alaska Airlines
John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT)
Leaves 1:00 p.m. · 12 h 41 min trip
1 stop · via Seattle-Tacoma International Airport (SEA)
found today
Cheapest nonstop one-way
$268
28 Oct · United Airlines
LaGuardia Airport (LGA) → Ontario International Airport (ONT)
Leaves 3:29 p.m. · 8 h 22 min trip
nonstop
found 9 hours ago
Found recently, and the cheapest we hold
$172 4 Feb 2027found todayOpen this trip
$148 28 Octfound 5 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 $96 to $168.
At $172, 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 18 departure dates from 28 Oct to 15 Sept 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 Feb 2027 to compare.
Every date we hold
75 fares on 18 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 28 Oct | $148 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 5 days ago | Open this trip |
| 4 Nov | $148 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 5 days ago | Open this trip |
| 5 Nov | $160 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 4 days ago | Open this trip |
| 11 Dec | $165 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | nonstop | found 7 days ago | Open this trip |
| 11 Jan 2027 | $192 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found 3 days ago | Open this trip |
| 16 Jan 2027 | $168 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 6 days ago | Open this trip |
| 28 Jan 2027 | $172 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found yesterday | Open this trip |
| 4 Feb 2027 | $172 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found today | Open this trip |
| 10 Feb 2027 | $193 | American Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 2 days ago | Open this trip |
| 11 Feb 2027 | $261 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 3 days ago | Open this trip |
| 14 Feb 2027 | $263 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 6 days ago | Open this trip |
| 17 Feb 2027 | $201 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 2 days ago | Open this trip |
| 19 Feb 2027 | $207 | Southwest Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found 4 days ago | Open this trip |
| 23 Apr 2027 | $172 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found yesterday | Open this trip |
| 24 Apr 2027 | $172 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found yesterday | Open this trip |
| 27 Aug 2027 | $173 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found 6 days ago | Open this trip |
| 28 Aug 2027 | $172 | Alaska Airlines | John F. Kennedy International Airport (JFK) → Ontario International Airport (ONT) | 1 stop | found 2 days ago | Open this trip |
| 15 Sept 2027 | $243 | United Airlines | LaGuardia Airport (LGA) → Ontario International Airport (ONT) | 1 stop | found yesterday | Open this trip |
Which month looks cheapest?
October 2026 is the cheapest month — from $148.
Airlines on the cheapest dates: Southwest Airlines, Alaska Airlines, American Airlines, United Airlines.
Premium cabin fares from New York to Ontario
Return
Business
The lowest business fare we have seen is $1,276, across 3 departure dates.
10 Nov – 14 Nov · EWR → ONT · United Airlines
out 1 stop, back 1 stop · via ORD
found 6 days ago
That business fare is 4.1 times the economy fare of $311.
Today's prices for 4 Feb 2027 – 10 Feb 2027 in another cabin: Premium economy · Business · First
One-way
Business
The lowest business fare we have seen is $675, across 6 departure dates.
31 Oct · JFK → ONT · American Airlines
1 stop · via DFW
found 7 days ago
That business fare is 4.6 times the economy fare of $148.
First
The lowest first-class fare we have seen is $755, across 2 departure dates.
29 Oct · JFK → ONT · American Airlines
1 stop · via DFW
found 2 days ago
Today's prices for 4 Feb 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for New York to Ontario?
Return
Fares 30 to 59 days before departure were typically 22% 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 | $372 | $358 | +27% | 25 |
| 7–13 days | $312 | $299 | +7% | 25 |
| 14–29 days | $299 | $241 | +2% | 25 |
| 30–59 days | $292 | $216 | Cheapest seen | 25 |
| 60–89 days | $338 | $285 | +16% | 25 |
| 90–179 days | $322 | $277 | +10% | 25 |
| 180+ days | $326 | $287 | +12% | 25 |
One-way
The cheapest fares were 30 to 59 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 |
|---|---|---|---|---|
| 30–59 days | $119 | $111 | Cheapest seen | 15 |
| 60–89 days | $169 | $114 | +42% | 18 |
| 90–179 days | $161 | $113 | +35% | 25 |
| 180+ days | $171 | $159 | +44% | 25 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
New York → Los Angeles
56 km from Ontario
$313
$29 less than flying to Ontario
30 Oct – 31 Oct · JFK → LAX · out 1 stop, back 1 stop
found yesterday
Philadelphia → Ontario
130 km from New York
$411
$69 more than flying from New York
9 Apr 2027 – 16 Apr 2027 · PHL → ONT · out 1 stop, back 1 stop
found 6 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
New York → Los Angeles
56 km from Ontario
$154
$18 less than flying to Ontario
5 Jan 2027 · JFK → LAX · nonstop
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 4 Feb 2027 – 10 Feb 2027. 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