ONT - ATL

$80 Find Cheap Flights from Ontario to Atlanta

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 Atlanta departing on 4/15. 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 Atlanta

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

Cheapest round-trip
$252
Overall average: $403
Frontier
Thu 4/16Tue 4/21
ONT - ATL • 1 stop
Cheapest non-stop
$439
Typical prices: $469-$578
Delta
Fri 4/17Wed 4/22
ONT - ATL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
ONT provides a stress-free departure with easy parking.
Use MARTA rail for a smooth arrival at ATL.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Delta. Average duration is 4h 09m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $259 (round-trip)
Shortest trip • 5h 50m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 7% price drop
Most popular
Good to know
Good to know
+1
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Atlanta!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Ontario to Atlanta (ONT-ATL)

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

Thu, Apr 16 - Tue, Apr 21
Frontier Logo
7:49 pm - 6:47 am
ONT
-
ATL
7h 58m
1 stop
Frontier Logo
9:15 pm - 7:31 am
ATL
-
ONT
37h 16m
2 stops
$252Frontier
Sat, Apr 18 - Mon, Apr 20
Multiple Airlines Logo
7:44 pm - 5:50 am
ONT
-
ATL
7h 06m
1 stop
Multiple Airlines Logo
9:37 am - 8:04 pm
ATL
-
ONT
13h 27m
1 stop
$253Multiple Airlines
Tue, Apr 7 - Thu, Apr 9
Frontier Logo
6:20 am - 5:11 am
ONT
-
ATL
19h 51m
1 stop
Frontier Logo
10:45 pm - 11:39 am
ATL
-
ONT
39h 54m
2 stops
$254Frontier
Thu, Apr 9 - Sun, Apr 12
Frontier Logo
7:40 pm - 11:54 am
ONT
-
ATL
13h 14m
1 stop
Frontier Logo
7:08 pm - 8:07 pm
ATL
-
ONT
27h 59m
1 stop
$255Frontier
Thu, Apr 16 - Mon, Apr 27
Multiple Airlines Logo
11:47 am - 5:50 am
ONT
-
ATL
15h 03m
1 stop
Multiple Airlines Logo
5:40 pm - 11:43 pm
ATL
-
ONT
9h 03m
1 stop
$256Multiple Airlines
Fri, Apr 24 - Mon, May 18
Multiple Airlines Logo
5:33 pm - 6:22 pm
ONT
-
ATL
21h 49m
1 stop
Multiple Airlines Logo
9:21 pm - 11:49 pm
ATL
-
ONT
29h 28m
2 stops
$257Multiple Airlines
Fri, Apr 17 - Sat, Apr 18
Frontier Logo
5:33 pm - 5:11 am
ONT
-
ATL
8h 38m
1 stop
Frontier Logo
10:35 am - 6:49 pm
ATL
-
ONT
11h 14m
2 stops
$258Frontier
Thu, Apr 30 - Thu, May 7
Frontier Logo
9:20 pm - 6:47 am
ONT
-
ATL
6h 27m
1 stop
Frontier Logo
2:32 pm - 7:11 pm
ATL
-
ONT
7h 39m
1 stop
$260Frontier
Thu, Apr 23 - Mon, Apr 27
Multiple Airlines Logo
11:47 am - 5:50 am
ONT
-
ATL
15h 03m
1 stop
Multiple Airlines Logo
5:40 pm - 11:43 pm
ATL
-
ONT
9h 03m
1 stop
$261Multiple Airlines
Sat, May 16 - Sun, May 24
Frontier Logo
5:59 pm - 9:22 am
ONT
-
ATL
12h 23m
1 stop
Frontier Logo
10:46 am - 7:11 pm
ATL
-
ONT
11h 25m
1 stop
$263Frontier
Booking Insights

KAYAK's insights & trends for Ontario to Atlanta flights

Get data-powered insights and trends into flights from Ontario to Atlanta 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 Atlanta?

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

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

What is the cheapest month to fly from Ontario to Atlanta?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Atlanta, 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 Atlanta is February, where tickets cost $383 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $458 and $440 respectively.

Can I save money by flying with a layover from Ontario to Atlanta?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $464, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Ontario to Atlanta?

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 Atlanta, 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 Atlanta, you should book around 2 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Expert advice

Expert advice for your flight from Ontario to Atlanta

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Blane Bachelor

Blane Bachelor

Expert on ATL

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low seasonJanuary
Cheapest flight$80
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Ontario to Atlanta

When to book flights from Ontario to Atlanta

Are your dates flexible? Find out the best times to travel from Ontario to Atlanta 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 flights from Ontario to Atlanta

  • Where do I park my car at Ontario Airport?

    There are several types of parking lots at Ontario International Airport, each with a different price range. These parking lots, including one on Terminal 1 that includes a cell phone lot and is accessible from the west of Airport Drive. Parking Lot D is located at the International Arrivals Terminal. Parking Lots 2 and 3 are located at Terminals 2 and 4, respectively. Parking Lot 5 is located close to the rental vehicle facility on Terminal Way's eastern side. The airport shuttle service is available in Lot 5.

  • Where can I have a meal at Ontario Airport?

    The Ontario Airport (ONT) offers a choice of culinary alternatives if you wish to have a snack before your trip. Wolfgang Puck Pizza and Harvest & Grounds are located at Terminal 2. Additionally, the restaurants in Terminal 4 are Coffee Bean & Tea Leaf, Einstein Bros. Bagels, and Rock & Brews.

  • Where are the nursing stations located at the Atlanta Airport?

    Airport lactation pods provide nursing mothers traveling through Hartsfield-Jackson Atlanta International Airport with intimate and private areas to care for their babies. The suites have benches, breast pump sockets, and diaper-changing tables. After security has arrived, they can be found in the arrivals area to the west of the domestic terminal.

  • Can I rent a car at Hartsfield-Jackson Atlanta International Airport?

    The Rental Car Center, a separate building on the airport property, handles on-site car rental pickups and returns. The Rental Car Center is easily reachable via the Atlanta SkyTrain. The Rental Car Center is served by various agencies including Advantage, Alamo, Avis, Budget, National, Dollar, Enterprise, Hertz, SIXT, Payless, and Thrifty.

  • What is the cheapest flight from Ontario to Atlanta?

    In the last 3 days, the lowest price for a flight from Ontario to Atlanta was $80 for a one-way ticket and $252 for a round-trip.

  • Do I need a passport to fly between Ontario and Atlanta?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Ontario to Atlanta?

    Delta, Alaska Airlines, JetBlue, and American Airlines offer inflight Wi-Fi service on the Ontario to Atlanta flight route.

  • Which aircraft models fly most regularly from Ontario to Atlanta?

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

  • Which airline alliances offer flights from Ontario to Atlanta?

    oneworld, and SkyTeam are the airline alliances operating flights between Ontario and Atlanta, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Ontario to Atlanta?

    There are nonstop flights from Ontario to Atlanta on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Atlanta are Southwest and Delta. With an average price for the route of $420 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 $501 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Atlanta?

    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 Atlanta.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Atlanta 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 Atlanta?

    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 Atlanta with an airline and back to Ontario with another airline. Booking your flights between Ontario and ATL 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 Atlanta?

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

KAYAK’s top tips for finding a cheap flight from Ontario to Atlanta

  • Looking for a cheap flight? 25% of our users found flights on this route for $211 or less one-way and $399 or less round-trip.
  • Traveler Aid, which is a non-profit group, helps passengers who are stranded at Ontario International Airport (ONT). Volunteers help travelers with everything from general questions about the airport to finding lost items. They are found in Terminals 2 and 4 between the baggage claim and the escalator.
  • There are shuttles that travel between ONT Parking Lot 5, the ConRAC building, and the airport terminals. These shuttles run at least every 20 minutes between the hours of 12 am and 3 am, and as frequently as every 5 minutes during busy hours.
  • Travelers arriving at Hartsfield-Jackson Atlanta International Airport (ATL) can stroll by the rotating exhibits of photographs, paintings, and sculptures, in addition to the permanent artwork on display. Concerts by musicians are also held in the Atrium.
  • Pet relief areas are located in each concourse of the Atlanta Airport next to Gates T7, A10, C19, E14, F7, and the D-Midpoint. A pet relief area is available in the International Terminal arrivals area, while the South Ground Transportation section has a 1,000-square-foot dog park outside doors W1 and W2.
  • At the Atlanta Airport, there are prayer rooms and a multifaith chapel that offers Catholic, Christian, and Muslim services. The Concourse E Chapel is located behind the Martin King Jr. Exhibit, and theConcourse F Chapel is at the International Atrium on level 2, Domestic Terminal Chapel, landside.

Prefer to fly direct from Ontario to Atlanta?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Ontario to Atlanta Hartsfield-Jackson.
Find which airlines fly direct from Ontario Airport to Atlanta Hartsfield-Jackson Airport, which days they fly and book direct flights.

Direct departures

Ontario to Atlanta Hartsfield-Jackson

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Direct returns

Atlanta Hartsfield-Jackson to Ontario

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Reviews of the top 5 airlines serving from Ontario to Atlanta

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Atlanta. 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 Atlanta? 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 4324 reviews
7.5Entertainment
8.0Comfort
7.0Food
8.1Boarding
8.6Crew
Airline reviews

Boarding was easy. The seats are small and fairly uncomfortable

8.0 ExcellentNicole, Mar 2026
LGB - OAK
Read more Southwest reviews

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

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

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

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

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Stop changing gates. Stop cancelling flights Stop moving my seat.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

Good flight. Connector flight was delayed so made a short turnaround in Atlanta which was stressful. Otherwise, great crew, Staff in ATL was very informative about the delay and ensured people their connections were fine. Notified the ones that were not. Great communication.

Seat was extremely hard which made even a short 1 hour 20 minute flight fairly uncomfortable.

Not good. One of my luggage is missing. And until now they can’t find it

My 9:50AM flight was delayed to 3:40PM "due to incoming aircraft delay". No aircraft is "delayed" that long. Found out once we did board (after several changes in times) that the aircraft had a maintenance issue and we had to wait for another aircraft. Just tell us that. The aircraft we did get was old and the seats need to be updated. I have been traveling for several weeks with AA and you should refresh your entertainment content as frequent flyers have gone through most of your new content. I have Celiac and a shellfish allergy and continue to have struggles with meals on business and first class flights. Please keep this in mind. Sorry - was a long travel day yesterday and a bit cranky this morning with my experience comments. Still an AA fan.

Delay after delay with little communication then AA lost my luggage and at airport would not assist just said scan this QR code to track your luggage and submit a claim. However QR code provided did not work so have to go back to airport

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Flight was cancelled without explanation or option for same day or next day flight

My flight was delayed by over an hour and the turbulance was horrible.

First off, I had a conversation with a flight attendant that was working this flight. I overheard her telling another flight attendant while we were in line for Chic-Fil-A that the flight was not going to land until 12:47 pm. I found this odd since the flight was to take off at 1:03. I commented to the flight attendant that was going to mess up the on-time take-off She said. if you fly alot you will notice that it's a good thing if the flight even arrives at all. I said that was a low bar. I think that flight attendants represent their airlines whether on board or in the airport ordering food. I was surprised to hear such negativity. However, I have noticed that Spirit flight attendants are usually in a sour mood.. Eventually the flight arrived and I boarded and the flight took off an hour late. There was no direction about the on-board wi-fi. Nor was there any info in the seat back pocket. I don't know if there was wi-fi or not, There were no complimentary snacks or drinks for my row 36 as there was turbulence and the captain asked the flight attendants to stop serving just as they were close to my row. When the turbulence stopped, they did have time to serve us but they did not. Upon arriving, the flight attendant asked anyone not having to catch a flight to Ft. Laudersle which was a tight connection to sit down and let those people pass. I complied but I could not help thinking that if Spirit would have took off on time that they would not have to inconvenience their passengers. All in all, I think Spirit is a mediocre airline at best. There are so many things they could do to improve. Yet, since I only fly Spirit infrequently preferring Southwest and Delta, I like to see if they are improving and sadly no, they are not. One good thing - nice modern seats and interiors.

I was double booked for my ticket- they have record of it and admitted to their error but wouldn’t let me board until I paid once again for the fare- have documentation of their mistake -

I cannot effectively rate the food and drink as I had not. Otherwise, the trip was fine. The seats were nice, the crew was fine. They could smile once in a while. They all look like they were mad.

They cancelled the flight due to crew unavailability. The next day they cancelled the flight again.

For the price of the fare, there really isn’t much to complain about.

It was delayed but the landing was the smoothest in a while that I’ve had.

Got to LAX at 3:20 am, the counter personnel did not start to check in bags till 3:40 am. I patiently waited at the priority check in line as they started to take people from the general line. After about 15 minutes of waiting, I approached the lady exactly in front of the priority line and asked her if they would be taking people from the priority line or if I would need to switch to waiting in the general line. She responded “yes”, I then asked her yes to what? And she yelled back at me loudly “I SAID YES!” Needless to say, I waited at the end of the line of the general line. I could have been told the priority line would not be called upon and could have queued in the general line ahead of many people that arrived to cue after I did

Boarding was good, clearly explained and efficient. Staff were helpful, I would've liked a place to get coffee that wasn't Starbucks

Remind customers of the need to have passport or new ID for boarding.

The flight never took off and we spent 7 hours at the airport

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

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

Information on your arrival and departure airports