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Ontario to New York in October 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 October 2026, the cheapest return found recently is $539 with Southwest Airlines, 25 Oct – 26 Oct, found today. The cheapest one-way found recently is $299 with Frontier Airlines, 23 Oct, found 2 days ago.

Return

In October 2026, the cheapest return fare on each of 10 departure dates is usually $358 to $451. 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, 1 is usually cheaper than October 2026.

Cheapest return found recently

$539

25 Oct – 26 Oct · Southwest Airlines

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

out 1 stop, back nonstop

found today

See prices for these datesCheck today's price

Cheapest we hold, of any age

$315

28 Oct – 31 Oct · Southwest Airlines

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

out 1 stop, back 1 stop

found 7 days ago

See prices for these datesCheck today's price

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The cheapest dates in October 2026

DatesFromAirlineStopsFound
28 Oct – 31 Oct$315Southwest Airlinesout 1 stop, back 1 stopfound 7 days agoSee prices for these dates
24 Oct – 28 Oct$342Alaska Airlinesout 1 stop, back 1 stopfound 2 days agoSee prices for these dates
27 Oct – 31 Oct$346American Airlinesout 1 stop, back 1 stopfound 6 days agoSee prices for these dates
21 Oct – 30 Oct$393Southwest Airlinesout 1 stop, back 1 stopfound 6 days agoSee prices for these dates
26 Oct – 30 Oct$393Alaska Airlinesout 1 stop, back 1 stopfound 4 days agoSee prices for these dates

Every date we hold

10 departure dates

20 Oct – 21 Oct: $638, found 5 days ago21 Oct – 30 Oct: $393, found 6 days ago22 Oct – 27 Oct: $452, found 4 days ago23 Oct – 28 Oct: $407, found 4 days ago24 Oct – 28 Oct: $342, found 2 days ago25 Oct – 26 Oct: $539, found today26 Oct – 30 Oct: $393, found 4 days ago27 Oct – 31 Oct: $346, found 6 days ago28 Oct – 31 Oct: $315, found 7 days ago29 Oct – 31 Oct: $447, found 5 days agoOct
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
20 Oct – 21 Oct$638Alaska AirlinesOntario International Airport (ONT) → Newark Liberty International Airport (EWR)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
21 Oct – 30 Oct$393Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
22 Oct – 27 Oct$452American AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
23 Oct – 28 Oct$407Alaska AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
24 Oct – 28 Oct$342Alaska AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
25 Oct – 26 Oct$539Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back nonstopfound todaySee prices for these dates
26 Oct – 30 Oct$393Alaska AirlinesOntario International Airport (ONT) → John F. Kennedy International Airport (JFK)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
27 Oct – 31 Oct$346American AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
28 Oct – 31 Oct$315Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
29 Oct – 31 Oct$447American 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 dates
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 datesEvery date in December 2026
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 October 2026, the cheapest one-way fare on each of 3 departure dates is usually $197 to $258. Across all 24 departure dates we hold on this route, it is usually $165 to $247. Of the 5 months with enough one-way fares to compare, 3 are usually cheaper than October 2026.

Cheapest one-way found recently

$299

23 Oct · Frontier Airlines

Ontario International Airport (ONT) → Newark Liberty International Airport (EWR)

1 stop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$178

28 Oct · Southwest Airlines

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

1 stop

found 5 days ago

Open this tripCheck today's price

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The cheapest dates in October 2026

DatesFromAirlineStopsFound
28 Oct$178Southwest Airlines1 stopfound 5 days agoOpen this trip
31 Oct$216Southwest Airlinesstops unknownfound 6 days agoOpen this trip
23 Oct$299Frontier Airlines1 stopfound 2 days agoOpen this trip

Every date we hold

3 departure dates

23 Oct: $299, found 2 days ago28 Oct: $178, found 5 days ago31 Oct: $216, found 6 days agoOct
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
23 Oct$299Frontier AirlinesOntario International Airport (ONT) → Newark Liberty International Airport (EWR)1 stopfound 2 days agoOpen this trip
28 Oct$178Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)1 stopfound 5 days agoOpen this trip
31 Oct$216Southwest AirlinesOntario International Airport (ONT) → LaGuardia Airport (LGA)stops unknownfound 6 days agoOpen 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 trip
November 2026From $1614 departure dates23 Nov · found 6 days agoOpen this tripEvery date in November 2026
December 2026From $117Cheapest seen3 departure dates5 Dec · found 7 hours agoOpen this tripEvery date in December 2026
January 2027From $1616 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
May 2027From $2821 departure date21 May 2027 · found 2 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