LGA - ONT

$129 Find Cheap Flights from New York LaGuardia Airport to Ontario

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 4/14. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

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

Cheapest round-trip
$248
Overall average: $378
Multiple Airlines
Tue 4/7Wed 4/22
LGA - ONT • 2 stops
Cheapest one-way
$129
Typical prices: $133-$247
Delta
Tue 4/14
LGA - ONT • 1 stop
Top airlines
United Airlines
Cheapest • from $252 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
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
Insights
Insights
Insights
Top layover airports
Dallas (DAL)
Cheapest • Avg $255 (round-trip)
Atlanta (ATL)
Shortest trip • 8h 50m (one-way)
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 44% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Tue, Apr 7 - Wed, Apr 22
Multiple Airlines Logo
9:59 am - 11:56 pm
LGA
-
ONT
16h 57m
2 stops
Multiple Airlines Logo
8:15 am - 10:04 pm
ONT
-
LGA
10h 49m
1 stop
$248Multiple Airlines
Wed, Mar 25 - Tue, Mar 31
United Airlines Logo
3:39 pm - 10:36 pm
LGA
-
ONT
9h 57m
1 stop
United Airlines Logo
5:10 am - 3:50 pm
ONT
-
LGA
7h 40m
1 stop
$252United Airlines
Wed, Apr 8 - Fri, Apr 17
Multiple Airlines Logo
6:30 am - 11:56 pm
LGA
-
ONT
20h 26m
2 stops
Multiple Airlines Logo
8:26 am - 11:06 pm
ONT
-
LGA
11h 40m
1 stop
$253Multiple Airlines
Fri, Apr 10 - Tue, Apr 21
Frontier Logo
10:00 pm - 6:45 pm
LGA
-
ONT
23h 45m
1 stop
Frontier Logo
8:15 am - 10:04 pm
ONT
-
LGA
10h 49m
1 stop
$254Frontier
Tue, Apr 7 - Wed, Apr 22
Multiple Airlines Logo
8:59 pm - 4:23 pm
LGA
-
ONT
22h 24m
1 stop
Multiple Airlines Logo
8:15 am - 10:04 pm
ONT
-
LGA
10h 49m
1 stop
$255Multiple Airlines
Fri, Apr 24 - Sat, May 2
United Airlines Logo
3:50 pm - 9:50 pm
LGA
-
ONT
9h 00m
1 stop
United Airlines Logo
5:00 am - 3:47 pm
ONT
-
LGA
7h 47m
1 stop
$256United Airlines
Tue, Apr 21 - Sat, Apr 25
Delta Logo
3:00 pm - 9:00 pm
LGA
-
ONT
9h 00m
1 stop
Delta Logo
12:49 pm - 11:41 pm
ONT
-
LGA
7h 52m
1 stop
$257Delta
Tue, May 12 - Sat, May 16
Frontier Logo
6:00 am - 11:55 pm
LGA
-
ONT
20h 55m
2 stops
Frontier Logo
8:00 am - 10:00 pm
ONT
-
LGA
11h 00m
1 stop
$259Frontier
Sun, Apr 12 - Tue, Apr 21
Multiple Airlines Logo
8:59 pm - 11:56 pm
LGA
-
ONT
29h 57m
2 stops
Multiple Airlines Logo
8:15 am - 10:04 pm
ONT
-
LGA
10h 49m
1 stop
$260Multiple Airlines
Fri, Apr 17 - Tue, Apr 21
Delta Logo
4:00 pm - 9:00 pm
LGA
-
ONT
8h 00m
1 stop
Delta Logo
10:15 pm - 8:39 am
ONT
-
LGA
7h 24m
1 stop
$261Delta
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.

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 October, where tickets cost $236 (return) on average. On the other hand, the most expensive months are December and September, where the average cost of round-trip tickets is $652 and $560 respectively.

Good to know

Low seasonSeptember
Cheapest flight$129
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly and prices are also 6% lower on average.
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 3 days, the lowest price for a flight from New York LaGuardia Airport to Ontario was $129 for a one-way ticket and $248 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?

    SkyTeam, and oneworld are the airline alliances operating flights between New York LaGuardia Airport and Ontario, with SkyTeam 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 $502 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 $444 and an overall rating of 7.9.

  • 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 4301 reviews
7.5Entertainment
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
Airline reviews

The charges were ridiculous for an hour flight and the turbulence was very scary.

2.0 MediocreDarcey, Feb 2026
SAN - SJC
Read more Southwest reviews

The charges were ridiculous for an hour flight and the turbulence was very scary.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

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

Boarding and crew were fantastic, but I paid for a window seat with no window. Seat 11D on a CRJ-900 apparently does not have a window. Lesson learned.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Smooth boarding, pleasant and professional lady checking us in. Crew service was excellent, again pleasant, but professional. Nice touch-down on landing! Thank you Delta. 💗

Paid for wifi that didn't work. No plug in seat to work. No entertainment.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

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

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

There were no TV screens - even in Business class. 5 delays, and only given $12 meal voucher! Terrible!

My seat tv didn’t work the whole trip. And the seat space is too small despite being seated at the front.

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

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

The worst. They don’t follow procedure for boarding per group. Flight got delayed for no understandably reasons, they changed our destination from PR to Miami, left us inside a plane for more than 8 hours, then cancelled flight in Miami leaving us stranded. Poorly managed re-accommodation for a new flight and overnight stay so I have to spend in a new ticket and my own hotel room to been able to get to my office next day. Lost 2 days of work and as a doctor, patients loosing their appointments. to other flights and besides

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Very bad! No good service delayed my second connection flight

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

Information on your arrival and departure airports