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Ontario to New York in December 2026 ONT → EWR, JFK, LGA

Ontario International Airport (ONT) → Newark Liberty International Airport (EWR), John F. Kennedy International Airport (JFK), LaGuardia Airport (LGA)

For departures in December 2026, the cheapest return found recently is $636 with American Airlines, 22 Dec – 26 Dec, found today. The cheapest one-way found recently is $117 with Southwest Airlines, 5 Dec, found 6 hours ago.

Return

In December 2026, the cheapest return fare on each of 16 departure dates is usually $371 to $607. Across all 51 departure dates we hold on this route, it is usually $360 to $454. Of the 3 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$636

22 Dec – 26 Dec · American Airlines

Ontario International Airport (ONT) → John F. Kennedy International Airport (JFK)

out 1 stop, back 1 stop

found today

See prices for these datesCheck today's price

Cheapest we hold, of any age

$348

5 Dec – 12 Dec · Southwest Airlines

Ontario International Airport (ONT) → LaGuardia Airport (LGA)

out 1 stop, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
5 Dec – 12 Dec$348Southwest Airlinesout 1 stop, back nonstopfound 6 days agoSee prices for these dates
25 Dec – 6 Jan 2027$354American Airlinesout 1 stop, back 1 stopfound 6 days agoSee prices for these dates
7 Dec – 10 Dec$355American Airlinesout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
8 Dec – 11 Dec$356Southwest Airlinesout 1 stop, back nonstopfound 2 days agoSee prices for these dates
11 Dec – 15 Dec$376Southwest Airlinesout 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Every date we hold

16 departure dates

1 Dec – 2 Jan 2027: $649, found yesterday2 Dec – 6 Dec: $437, found 4 days ago5 Dec – 12 Dec: $348, found 6 days ago7 Dec – 10 Dec: $355, found 3 days ago8 Dec – 11 Dec: $356, found 2 days ago11 Dec – 15 Dec: $376, found 3 days ago12 Dec – 16 Dec: $392, found 3 days ago16 Dec – 18 Dec: $456, found 2 days ago17 Dec – 21 Dec: $617, found 2 days ago21 Dec – 25 Dec: $468, found 6 days ago22 Dec – 26 Dec: $636, found today23 Dec – 27 Dec: $648, found 2 days ago24 Dec – 27 Dec: $381, found 3 days ago25 Dec – 6 Jan 2027: $354, found 6 days ago29 Dec – 1 Jan 2027: $604, found 6 days ago31 Dec – 11 Jan 2027: $393, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 2 Jan 2027$649Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 2 stops, back 1 stopfound yesterdaySee prices for these dates
2 Dec – 6 Dec$437Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back nonstopfound 4 days agoSee prices for these dates
5 Dec – 12 Dec$348Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back nonstopfound 6 days agoSee prices for these dates
7 Dec – 10 Dec$355American AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
8 Dec – 11 Dec$356Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back nonstopfound 2 days agoSee prices for these dates
11 Dec – 15 Dec$376Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
12 Dec – 16 Dec$392Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
16 Dec – 18 Dec$456Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
17 Dec – 21 Dec$617American AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
21 Dec – 25 Dec$468American AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 2 stopsfound 6 days agoSee prices for these dates
22 Dec – 26 Dec$636American AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 1 stopfound todaySee prices for these dates
23 Dec – 27 Dec$648American AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
24 Dec – 27 Dec$381Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
25 Dec – 6 Jan 2027$354American AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
29 Dec – 1 Jan 2027$604American AirlinesOntario International Airport (ONT) → Newark Liberty International Airport (EWR)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
31 Dec – 11 Jan 2027$393American AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $288.

October 2026From $31510 departure dates28 Oct – 31 Oct · found 7 days agoSee prices for these datesEvery date in October 2026
November 2026From $288Cheapest seen18 departure dates16 Nov – 22 Nov · found 3 days agoSee prices for these datesEvery date in November 2026
December 2026From $34816 departure dates5 Dec – 12 Dec · found 6 days agoSee prices for these dates
January 2027From $3672 departure dates16 Jan 2027 – 25 Jan 2027 · found 3 days agoSee prices for these dates
February 2027From $4451 departure date22 Feb 2027 – 8 Mar 2027 · found 2 days agoSee prices for these dates
March 2027From $4521 departure date7 Mar 2027 – 10 Mar 2027 · found 6 days agoSee prices for these dates
April 2027From $4402 departure dates17 Apr 2027 – 24 Apr 2027 · found 3 days agoSee prices for these dates
August 2027From $5081 departure date23 Aug 2027 – 29 Aug 2027 · found 6 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 3 departure dates is usually $144 to $185. Across all 23 departure dates we hold on this route, it is usually $168 to $237. Of the 5 months with enough one-way fares to compare, 1 is usually cheaper than December 2026.

Cheapest one-way found recently

$117

5 Dec · Southwest Airlines

Ontario International Airport (ONT) → LaGuardia Airport (LGA)

1 stop

found 6 hours ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
5 Dec$117Southwest Airlines1 stopfound 6 hours agoOpen this trip
14 Dec$170Southwest Airlines1 stopfound 4 days agoOpen this trip
25 Dec$199American Airlines1 stopfound yesterdayOpen this trip

Every date we hold

3 departure dates

5 Dec: $117, found 6 hours ago14 Dec: $170, found 4 days ago25 Dec: $199, found yesterdayDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
5 Dec$117Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)1 stopfound 6 hours agoOpen this trip
14 Dec$170Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)1 stopfound 4 days agoOpen this trip
25 Dec$199American AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)1 stopfound yesterdayOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $117.

October 2026From $1783 departure dates28 Oct · found 5 days agoOpen this tripEvery date in October 2026
November 2026From $1614 departure dates23 Nov · found 6 days agoOpen this tripEvery date in November 2026
December 2026From $117Cheapest seen3 departure dates5 Dec · found 6 hours agoOpen this trip
January 2027From $1615 departure dates26 Jan 2027 · found 7 days agoOpen this trip
February 2027From $1802 departure dates28 Feb 2027 · found 6 days agoOpen this trip
March 2027From $2304 departure dates22 Mar 2027 · found 3 days agoOpen this trip
April 2027From $1991 departure date27 Apr 2027 · found 7 days agoOpen this trip
June 2027From $2581 departure date8 Jun 2027 · found yesterdayOpen this trip

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