ONT - LGA

$100 Find Cheap Flights from Ontario to New York LaGuardia Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to LaGuardia departing on 9/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to New York LaGuardia Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to New York, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to New York, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ontario to LaGuardia (ONT-LGA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to LaGuardia 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 Ontario to LaGuardia

Sat, Sep 6 - Tue, Sep 9
American Airlines Logo
8:15 am - 8:59 pmONT-LGA
9h 44m1 stop
American Airlines Logo
1:00 pm - 6:54 pmLGA-ONT
8h 54m1 stop
$223American Airlines
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Sat, Sep 6 - Tue, Sep 9
American Airlines Logo
6:10 am - 8:00 pmONT-LGA
10h 50m2 stops
American Airlines Logo
2:59 pm - 9:24 pmLGA-ONT
9h 25m1 stop
$228American Airlines
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Mon, Oct 27 - Thu, Nov 6
Frontier Logo
11:53 am - 7:29 pmONT-LGA
28h 36m1 stop
Frontier Logo
10:00 pm - 7:29 amLGA-ONT
12h 29m1 stop
$229Frontier
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Sat, Sep 6 - Tue, Sep 9
American Airlines Logo
6:10 am - 6:29 pmONT-LGA
9h 19m2 stops
American Airlines Logo
12:20 pm - 6:54 pmLGA-ONT
9h 34m2 stops
$233American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Frontier Logo
8:24 am - 9:05 pmONT-LGA
9h 41m1 stop
Frontier Logo
8:36 pm - 11:50 pmLGA-ONT
30h 14m1 stop
$235Frontier
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Fri, Feb 6 - Tue, Feb 10
United Airlines Logo
5:05 am - 3:46 pmONT-LGA
7h 41m1 stop
United Airlines Logo
3:20 pm - 10:26 pmLGA-ONT
10h 06m1 stop
$242United Airlines
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Tue, Sep 30 - Wed, Oct 1
Southwest Logo
5:25 am - 4:25 pmONT-LGA
8h 00m1 stop
Southwest Logo
2:10 pm - 7:35 pmLGA-ONT
8h 25m1 stop
$247Southwest
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Tue, Oct 21 - Fri, Oct 24
Southwest Logo
5:15 am - 9:10 pmONT-LGA
12h 55m2 stops
Southwest Logo
9:00 am - 3:35 pmLGA-ONT
9h 35m1 stop
$258Southwest
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Tue, Sep 16 - Wed, Sep 17
Delta Logo
7:05 am - 5:45 pmONT-LGA
7h 40m1 stop
Delta Logo
6:00 am - 10:42 amLGA-ONT
7h 42m1 stop
$277Delta
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Tue, Nov 4 - Wed, Nov 5
Delta Logo
11:36 am - 10:42 pmONT-LGA
8h 06m1 stop
Delta Logo
11:15 am - 9:20 pmLGA-ONT
13h 05m2 stops
$282Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to LaGuardia flights

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

What’s the cheapest day of the week to fly from Ontario to New York LaGuardia Airport?

The average price of all round-trip flights from Ontario to New York LaGuardia Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ontario to New York LaGuardia Airport, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from New York LaGuardia Airport, Thursday is the cheapest day to fly and Saturday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to New York LaGuardia Airport, 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 Ontario to New York LaGuardia Airport is January, where tickets cost $291 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $567 and $549 respectively.

How far in advance should I book a flight from Ontario to New York LaGuardia Airport?

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

To get a below average price on the flight from Ontario to New York LaGuardia Airport, you should book around 3 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$100
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Ontario to New York LaGuardia Airport

When to book flights from Ontario to LaGuardia

Are your dates flexible? Find out the best times to travel from Ontario to LaGuardia 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 Ontario to New York LaGuardia Airport flights

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

    In the last 3 days, the lowest price for a flight from Ontario to New York LaGuardia Airport was $100 for a one-way ticket and $223 for a round-trip.

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

    No

  • Which airlines offer Wi-Fi service onboard planes from Ontario to New York LaGuardia Airport?

    American Airlines, and JetBlue offer inflight Wi-Fi service on the Ontario to New York LaGuardia Airport flight route.

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

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Ontario to New York LaGuardia Airport flight route.

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

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

  • What is the most popular layover when flying to New York LaGuardia Airport from Ontario?

    Dallas is the most popular layover city among KAYAK users traveling from Ontario to New York LaGuardia Airport.

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

    The two airlines most popular with KAYAK users for flights from Ontario to New York are Southwest and Delta. With an average price for the route of $407 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 $398 and an overall rating of 7.9.

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

    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 Ontario to New York LaGuardia Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to New York LaGuardia Airport from Ontario 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 Ontario to New York LaGuardia Airport?

    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 New York LaGuardia Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and LGA 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 Ontario to New York LaGuardia Airport?

    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 New York LaGuardia Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Ontario to LaGuardia

 
See real verified KAYAK customer reviews for airlines flying from Ontario to New York. 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 Ontario to LaGuardia? 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 4241 reviews
8.0Comfort
8.6Crew
8.1Boarding
7.0Food
7.5Entertainment
Airline reviews

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

10.0 ExcellentJoseph, Aug 2025SFO - BWI
Read more Southwest reviews

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

My flight to Chicago left and landed early. My return flight left two minutes late and arrived 2 minutes late. My seat selections were ideal! There were no snacks going to Chicago and no snacks on the return trip. There are no charging outlets on board.

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

De planning was an absolute mess. We were never told that we weren’t at the gate and that we had to go down unstable stairs and then hop on a bus. People were falling, we couldn’t tell who was in charge. Overall terrible communication that ended up leaving a bad impression at the very end of the experience.

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

I like for how they process during check in. It was very smoothly.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

After I checked in, I realized we had no seat assignment. It said they would be assigned at the gate. This was really frustrating because I usually use a lounge before flights, but I couldn't because I had to be at the gate to ensure we got our seat assignments. The gate agent arrived an hour before the flight left. I was the first one up to ask about seat assignments. She told us to wait for names to be called. Dozens of other passengers were paged, but we were not. Finally, I asked my husband to ask. He went up and was also told to wait. About 10 minutes later, they called for boarding. We still had not been told our seats. We went back to the desk and they were in a panic, saying we actually weren't on that flight. Then they made an announcement telling the stand by passengers to not board (in case we needed their seats). It was so stressful and unprofessional. Finally they gave us our seats. I have no idea what happened and why the two desk agents seemed to have conflicting ideas about our seats, whether we were on that flight etc.

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

get E+, a must for 5 hours flight if you are tall

Multiple delays and not straight answer from the United team

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

Food and flight attendents with positive dispositions and friendly behavior, more professional attitudes

Air Marco’s fleet of airplanes are old and pathetic. The seats are torn and stained. The monitors don’t work properly. If this wasn’t a business trip and I had control of booking the flight, I would not travel on this carrier.

Good service, friendly staff. Food was average for airlines and the seats were small.

Pathetic check in experience once again. Not enough staff scheduled at bag drop or for special assistance at LHR. Really need to rethink the whole self check in procedure. The crew was good. A very decent selection of special meals in this leg as compared to the JFK-LHR leg.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

A cookie and a soda, packed like sardines, will never be a positive experience. Also, boarded a 5:30 flight at 7:45pm

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Whenever a passenger purchase a ticket his advantage number should automatically to his information. It's not everyone remember the number. You request for your number and American airline agent say they will email it....and they never email anything and you loose your mileage just because you don't remember your number. It should automatically go your information and associate with your email account at all times

The flight was two hours late to take off. The captain kept making announcements in English, but the volume on the speakers was low and we could not hear him. The flight attendant’s French translation was loud and clear, but we couldn’t understand French. The crew was nowhere to be found to relay what the captain was announcing. Very frustrating experience. American has to do better.

Paid $35 and not able to access the internet at all.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

I guess you get what you pay for. The seats are very uncomfortable and very little space. The snacks were pricey.

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

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

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