LGA - ONT

$157 Find Cheap Flights from New York LaGuardia Airport to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from LaGuardia to Ontario departing on 7/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$291
Typical prices: $306-$391
Frontier
Sat 8/22Sat 8/29
LGA - ONT • 1 stop
Cheapest one-way
$157
Typical prices: $148-$303
Frontier
Sat 7/18
LGA - ONT • 1 stop
Top airlines
Cheapest • from $291 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between LaGuardia and Ontario. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $255 (round-trip)
Shortest trip • 8h 10m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 38% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from LaGuardia to Ontario (LGA-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from LaGuardia to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from LaGuardia to Ontario

Sat, Aug 22 - Sat, Aug 29
Frontier Logo
10:55 pm - 8:38 am
LGA
-
ONT
12h 43m
1 stop
Frontier Logo
9:37 am - 10:00 pm
ONT
-
LGA
9h 23m
1 stop
$291Frontier
Wed, Aug 26 - Mon, Aug 31
Southwest Logo
10:55 am - 5:35 pm
LGA
-
ONT
9h 40m
2 stops
Southwest Logo
5:15 am - 4:45 pm
ONT
-
LGA
8h 30m
2 stops
$294Southwest
Fri, Sep 18 - Mon, Sep 21
Delta Logo
3:00 pm - 10:26 pm
LGA
-
ONT
10h 26m
1 stop
Delta Logo
10:00 pm - 10:38 am
ONT
-
LGA
9h 38m
1 stop
$297Delta
Tue, Aug 11 - Wed, Aug 12
American Airlines Logo
7:29 am - 1:31 pm
LGA
-
ONT
9h 02m
1 stop
American Airlines Logo
7:05 am - 8:29 pm
ONT
-
LGA
10h 24m
1 stop
$302American Airlines
Tue, Aug 4 - Sun, Aug 9
Frontier Logo
10:55 pm - 8:41 am
LGA
-
ONT
12h 46m
1 stop
Frontier Logo
8:17 am - 10:00 pm
ONT
-
LGA
10h 43m
1 stop
$304Frontier
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
11:25 am - 6:55 pm
LGA
-
ONT
10h 30m
1 stop
Southwest Logo
6:40 am - 8:25 pm
ONT
-
LGA
10h 45m
2 stops
$307Southwest
Mon, Aug 24 - Sun, Sep 6
Frontier Logo
10:55 pm - 8:36 am
LGA
-
ONT
12h 41m
1 stop
Frontier Logo
8:17 am - 10:00 pm
ONT
-
LGA
10h 43m
1 stop
$311Frontier
Wed, Sep 2 - Sat, Sep 12
Delta Logo
6:00 am - 10:42 am
LGA
-
ONT
7h 42m
1 stop
Delta Logo
12:17 pm - 11:42 pm
ONT
-
LGA
8h 25m
1 stop
$312Delta
Fri, Aug 7 - Mon, Aug 10
Southwest Logo
7:25 am - 3:30 pm
LGA
-
ONT
11h 05m
1 stop
Southwest Logo
8:10 am - 10:55 pm
ONT
-
LGA
11h 45m
1 stop
$313Southwest
Wed, Aug 19 - Wed, Sep 2
Southwest Logo
6:00 am - 12:40 pm
LGA
-
ONT
9h 40m
2 stops
Southwest Logo
5:45 am - 4:55 pm
ONT
-
LGA
8h 10m
2 stops
$314Southwest
Booking Insights

KAYAK's insights & trends for LaGuardia to Ontario flights

Get data-powered insights and trends into flights from LaGuardia to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from New York LaGuardia Airport to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from New York LaGuardia Airport to Ontario departing in August.

What is the cheapest month to fly from New York LaGuardia Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from New York LaGuardia Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from New York LaGuardia Airport to Ontario is February, where tickets cost $279 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $658 and $586 respectively.

Good to know

Low seasonOctober
Cheapest flight$157
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 14% increase in price.
Flight from New York LaGuardia Airport to Ontario

When to book flights from LaGuardia to Ontario

Are your dates flexible? Find out the best times to travel from LaGuardia to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking New York LaGuardia Airport to Ontario flights

  • What is the cheapest flight from New York LaGuardia Airport to Ontario?

    In the last 5 days, the lowest price for a flight from New York LaGuardia Airport to Ontario was $157 for a one-way ticket and $291 for a round-trip.

  • Do I need a passport to fly between New York LaGuardia Airport and Ontario?

    No, a passport isn't needed to fly from New York LaGuardia Airport to Ontario. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from New York LaGuardia Airport to Ontario?

    New York LaGuardia Airport and Ontario are both served by 1 main airport. You will leave New York LaGuardia Airport from New York LaGuardia and will be arriving at Ontario.

  • Which aircraft models fly most regularly from New York LaGuardia Airport to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from New York LaGuardia Airport to Ontario?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between New York LaGuardia Airport and Ontario, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from New York to Ontario, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from New York to Ontario are Southwest and Delta. With an average price for the route of $448 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $412 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from New York LaGuardia Airport to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from New York LaGuardia Airport to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from New York LaGuardia Airport to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from New York LaGuardia Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from New York LaGuardia Airport to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to New York LaGuardia Airport with another airline. Booking your flights between New York LaGuardia Airport and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from New York LaGuardia Airport to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from New York LaGuardia Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from LaGuardia to Ontario

 
See real verified KAYAK customer reviews for airlines flying from New York to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from LaGuardia to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4249 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

2.0 MediocreIrene, Jun 2026
DEN - SFO
Read more Southwest reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

It was one and half hour late... Not sure if any other experience matters.

It was 2 hours 45 minutes late, for no apparently clear reason.

My bag was damaged and is now missing a wheel. I tried to buy a claim in on the website but it would not accept my confirmation # for submission. Other than that, everything else was good!

Our flight to Oakland was great bc the plane was new but it was delayed by 15min not bad at all. Over all it was an 8/10

The flight in it self was good. The delays looking for pilots was unexpected.

Planes never have enough leg room for someone my height so my knees were cramped and therefore started aching. Also, the Wi-Fi was down so I couldn't watch anything on my phone like I anticipated.

Wish Southwest had a power source to plug iPhone's into; wish Southwest also served up better snacks. Otherwise, the service & seat choices, if you check in on time for your flight, are excellent. I'm also happy to say that this particular flight had no delays.

FA was a bit strange and dodgy not very characteristic of Delta

Third flight in two months where the crew was not there. Comfort seating does not guarantee overhead bin space. Passengers with children are allowed on the plane first - if you are flying to and from Orlando, this means half the plane has boarded before you get on. And somehow all the bin space is taken up. 3 out of 5 flights have had issues with equipment or procedure. Some of these instances caused the flight to be delayed because of a "nuisance" light. One time it was a bag that had been brought on board but did not belong to anyone so we had to return to the gate. Last night we were told the "AC" on the plane doesn't work well and we're 10th for take off- because the crew was late - and that it will get cool when we're in the air. Not sure if this is usual, but I didn't think flight crew could jump seat in first class. Movie and TV selection has not been refreshed for several months- flying one to two round trips each month easily exhausts the list of content.

Great experience nice pilot very soft and easy landing and take off

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Transparency from pilots, quick boarding and exiting the plane, staff greeted to each and everyone,

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

Everything except the food and entertainment. It was a great experience though

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Delays!!! Serious delays. I was told by a member of staff in LGA that I would miss my DEN to LAX flight connection, so I was put on a later flight. Due to delays I would have been able to have made my original flight, where I was sat in business class - seat 1A: I was put on my original flight but bumped from business - 1A to economy 33C. I want a refund for paying business class but only flying economy

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

Their app did not recognize my Aeroplan frequent flyer number and would not allow me access to my boarding card. Ground staff was readily available at the airport to print it out to me.

Excellent as always. Service was excellent and fully bilingual. Cannot complain .Will travel again. Always have and will continue. Highly recommended.

The flight de-boarded after being informed of a 3 hour delay. The gate agent said we could go to lounge. The flight ended up boarding 20 minutes later and I missed it.

My experience with American Airlines was great. Unfortunately my stroller was not located and has not been given to me and or reached out in return for in regard to information.

Pilots were fantastic - super smooth. First Class flight attendant was very attentive. Main Cabin flight attendant should try to smooth the rough edges of her voice - very shrill / punitive. Hurt my ears just to listen to her. Recognize they have a (tough) job to do - but tone over speakers needs to be less like scolding a 5 year old.

Maybe focus more on delivering a good product vs selling me a damn credit card

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

Flight was extremely hot and they made us check our bags when the space was nowhere near full

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

Everything you need to know for your flight from LaGuardia to Ontario

Information on your arrival and departure airports