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Find cheap flights from Ontario to Florida Keys from $90

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 Florida Keys departing on 6/3. 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
0 bags
Sun 6/2
Sun 6/9

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Best Florida Keys Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Miami
Miami1 stop$226
Key West
Key West1 stop$316

Good to know

Low season

June

High season

December

Cheapest flight

$90
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Ontario to Miami

FAQs - booking Florida Keys flights

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

    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 Florida Keys.

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

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

    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 Florida Keys with an airline and back to Ontario with another airline.

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

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

See more FAQs

Top 5 airlines serving from Ontario to Florida Keys

 
Need help choosing which airline to fly with from Ontario to Florida Keys? 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
DeltaOverall score based on 10848 reviews
8.6Crew
8.0Entertainment
8.2Boarding
7.4Food
7.9Comfort
Airline reviews

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

10.0 ExcellentDonnel, Apr 2024ATL - EYW
Read more about Delta reviews

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

They did a fine job. Can't wait to use Delta in the future.

Seat back monitors and outlets were dead and not working.

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Boarding super slow with people allowed to linger in aisles

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

First time travel in economy and the worst experience I ever had ! Shame on paying 600 dollars to be in a tuna can ! Service was terrible no even water no even class no even matters your flight attendants were lazy and sloppy very bad experience! After all these years traveling in first and once I try this cause I need to go to a destination for an emergency wow shame on you !

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

I liked everything about the flight. The service was excellent!

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

It was a good flight. Of course it was full, but it went well.

We sat on the plane for 1 hour because the airline was short handed could not be unloading.

We are gluten free, there were not any available complimentary gluten free options.

Flight delayed 3 times. We were directed to go to a gate across from our gate. The plane wasn't there yet so we had to wait for it to arrive, then deplane everyone and then wait again for the plane to be cleaned. After 45 minuites we were allowed on the plane. The first plane had mechanical issues. The 2nd plane must have had bathroom issues because we did not have any food service whatsoever. No snack or beverage. That made for a long time not to have anything considering that we had just made it to the original gate and we had no time to stop to get food or a drink. Then we didn't want to leave the gate to get food because we wouldn't know how much longer the delay would be. Then the next gate change. Had we been told that the total time would have been aprox 45 min later we would have left to get food and a beverage. We had to wait again for the okay to the pilot to take off so we were on the runway for another 20 min. Overall, we were delayed over 2 hours which felt like 4 hours.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Me and my husband experienced very bad in American Airlines. We missed our flight going to Doha. The American Airlines was delayed we arrived already 10:27pm. Supposed to be 9:40 pm. So what they did they rebooked our flight and they gave us a hotel. When we arrived at the hotel the front desk said it was fully booked already. Oh my gosh! I said why did you accept the booking if it's fully booked. The guy said that's American Airlines they just book even it's already full. That's 2am already, we have nothing to do so, we decided to go another hotel. We pay the room, food and taxi. Pls give an action on this matter. Refund our expenses and give us more compensation. Not only our room, food, taxi but also our efforts, tiredness looking for a room that can accommodate us.

Horrible. Flight was delayed and very bumpy. I was super unhappy

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

Spirit canceled the flight in March and never notified me!

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

The weight limit per bag was really low - 40 lbs - so we had to pay extra. Then, they said their carry on size was 14x18x8, and we measured our bag very carefully. It was within the limit, yet they said it was too big, so we ended up paying an extra $100 for that too!! So it wasn’t the cheap flight we thought it would be. Then, they moved up our initial flight to depart 3 hours earlier which meant we had to be out on the road by 7 am and then have a 6 hour layover and we got home at 2am. It was a grueling day. I won’t be flying with them again.

Overall it was a good experience. Stewards were very kind and professional. The departure and arrival times were as promised. Plane was clean.

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

My experience was above excellent!!!! First the lady that pushed me in the wheelchair to the gate was outstanding!!! Then the ladies at the gate went over and beyond, by helping me fill out the immigration form! I would not have been able to get to Guatemala without their help!!! God bless them all! They were amazing 🙏❤️🙏

First....my trip was from Ft. Myers to Philly (not the other way around). Plane was clean, staff was friendly and flight was efficient with boarding and flight time. Thumbs up all around.

Early departure and arrival. Cabin very cold. Waited a while for luggage to come out

The no frills ticket price. The seats are very uncomfortable.

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

It was impossible to change a carry-on for a checked bag after the initial selection. The flight was delayed 14 hours "to allow for a late arriving aircraft." The seats were shockingly uncomfortable. This was only the second time I've seen seats that didn't recline in an airline. The first was in an East Bloc airline before the fall if the Iron Curtain.

First time flying Frontier, I am not sure the Ala Carte menu of options is for me.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

I liked getting off the plane. Everything else was well below standards. Not even offering a bag of peanuts for free for a 4 hours flight is ridiculous.

There was no wifi, there was no usb charger on the planes Frontier lowered the weight limit on suitcases from 50 to 40 pounds Frontier now charges for a seat...really? If i don't pay for a basic seat, do i stand the whole flight? Frontier now charges for the carry on, just like for the checked suitcase The bundle pricing is way over priced.

Bought seats on the flight and they were supposed to be 2 and a jumpseat. Plane clearly changed and it was a regular 3 seat row. Asked for a refund and was denied. If I wanted to sit next to someone else I wouldn't have bought the seats..

Flying frontier reminded me of flying with my family in the 80’s in all of the worst ways possible. From poor customer service to little to no technology. The plane was dirty old and also stuck in the 80’s. From their seatbelts to not having anywhere to charge our phones the seats and the equipment I wasn’t sure if I was being punked or thrown back in time. Needless to say I don’t see myself flying frontier ever again.

Book cheap flights from Ontario to Florida Keys

Recent round-trip flight deals

5/14Tue
1 stopFrontier
19h 47mONT-MIA
5/16Thu
1 stopFrontier
7h 55mMIA-ONT
$226
5/15Wed
1 stopFrontier
19h 34mONT-MIA
5/17Fri
1 stopFrontier
19h 47mMIA-ONT
$227
5/21Tue
1 stopAmerican Airlines
7h 00mONT-MIA
5/28Tue
1 stopAmerican Airlines
8h 37mMIA-ONT
$242
5/28Tue
1 stopDelta
8h 59mONT-MIA
6/4Tue
2 stopsDelta
11h 31mMIA-ONT
$271
5/7Tue
2 stopsDelta
13h 28mONT-MIA
5/14Tue
1 stopDelta
9h 06mMIA-ONT
$280
5/14Tue
2 stops
13h 53mONT-MIA
5/29Wed
1 stop
8h 33mMIA-ONT
$283
5/6Mon
1 stopAmerican Airlines
6h 52mONT-MIA
5/8Wed
1 stopAmerican Airlines
8h 19mMIA-ONT
$292
5/13Mon
2 stops
12h 08mONT-MIA
5/16Thu
1 stop
7h 55mMIA-ONT
$322
8/3Sat
2 stopsUnited Airlines
23h 15mONT-EYW
8/10Sat
3 stopsUnited Airlines
33h 08mEYW-ONT
$696
7/26Fri
2 stopsUnited Airlines
26h 15mONT-EYW
8/2Fri
2 stopsUnited Airlines
13h 06mEYW-ONT
$722

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Recent one-way flight deals

6/3Mon
1 stopFrontier
10h 15mONT-MIA
$90
7/8Mon
1 stopFrontier
26h 10mONT-MIA
$92
5/15Wed
1 stopAmerican Airlines
7h 36mONT-MIA
$104
5/12Sun
1 stopDelta
8h 10mONT-MIA
$128
5/27Mon
1 stopJetBlue
13h 00mONT-MIA
$133
5/11Sat
1 stopDelta
8h 10mONT-MIA
$142
5/7Tue
1 stopAmerican Airlines
6h 45mONT-MIA
$148
5/10Fri
1 stopUnited Airlines
7h 17mONT-MIA
$178
5/15Wed
1 stopUnited Airlines
7h 17mONT-MIA
$192
6/2Sun
1 stopJetBlue
12h 59mONT-MIA
$226

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Last minute flights from Ontario to Florida Keys

Last minute flight, train and bus deals

5/6Mon
multi-stopAmerican Airlines
7h 24mONT-MIA
5/10Fri
multi-stopAmerican Airlines
6h 58mMIA-ONT
$251
5/4Sat
multi-stopFrontier
26h 01mONT-MIA
6/9Sun
multi-stopFrontier
25h 53mMIA-ONT
$273
5/7Tue
multi-stopDelta
9h 45mONT-MIA
5/9Thu
multi-stopDelta
7h 40mMIA-ONT
$275
5/7Tue
multi-stopDelta
13h 28mONT-MIA
5/14Tue
multi-stopDelta
9h 06mMIA-ONT
$280
5/6Mon
multi-stopFrontier
26h 04mONT-MIA
5/17Fri
multi-stopFrontier
19h 47mMIA-ONT
$281
5/4Sat
multi-stopAmerican Airlines
7h 55mONT-MIA
5/7Tue
multi-stopAmerican Airlines
8h 19mMIA-ONT
$291
5/4Sat
multi-stopUnited Airlines
7h 59mONT-MIA
5/11Sat
multi-stopUnited Airlines
7h 55mMIA-ONT
$384
5/4Sat
multi-stopUnited Airlines
7h 59mONT-MIA
5/8Wed
multi-stopUnited Airlines
8h 15mMIA-ONT
$394
5/6Mon
multi-stopSouthwest
8h 15mONT-MIA
5/9Thu
multi-stopSouthwest
11h 00mMIA-ONT
$456
5/6Mon
multi-stopSouthwest
12h 20mONT-MIA
5/9Thu
multi-stopSouthwest
11h 40mMIA-ONT
$467

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Ontario - Florida Keys Flights

Departure:

Ontario (ONT)United States

Cabin classes:

$358
$153
$296
$38