HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Ontario to Key West (ONT - EYW) from $404

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/19. 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.
ONT — EYW
Mai 3 — Mai 101
From?
To?
Fr 5/3
Fr 5/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Ontario to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2024.

Popular in

May

Cheapest in

August

Average price

$737

Round-trip from

$374
High demand for flights, 63% potential price rise
Search Deals
Best time to find cheap flights, 35% potential price drop
Search Deals
Average for round-trip flights in April 2024
Search Deals
From Ontario to Key West
Search Deals

What is the cheapest day to fly round-trip from Ontario to Key West?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 95% on the overall cost on flights from Ontario to Key West.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 18 days in advance, which can save you up to 54% on flights from Ontario to Key West compared to booking the week you need them. Waiting 18 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $573. For sooner than that we have options available in the next 3 days from $818.

What is the cheapest month to fly from Ontario to Key West?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, October can be a great choice for travel to Key West. Flights to Key West from Ontario in October are about $645 on average during October, but can be found for as low as $266.

When is the cheapest time to fly from Ontario to Key West (ONT - EYW)?

Unlike at noon, when flights are generally more expensive, you can save up to 3% on flights from Ontario to Key West by exploring options for tickets in the morning.

Cheap American Airlines flights from Ontario to Key West

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Key West. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
So 6/166:00 amONT - EYW
1 stop7h 24mAmerican Airlines
So 6/234:59 pmEYW - ONT
1 stop9h 00mAmerican Airlines
Deal found 4/26$721
So 6/167:26 pmONT - EYW
2 stops12h 19mAmerican Airlines
So 6/234:59 pmEYW - ONT
1 stop9h 00mAmerican Airlines
Deal found 4/26$851
Sa 5/1110:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Sa 5/1811:42 amEYW - ONT
1 stop10h 20mAmerican Airlines
Deal found 4/27$855
Do 5/2311:59 pmONT - EYW
1 stop9h 10mAmerican Airlines
Mo 5/274:58 pmEYW - ONT
1 stop9h 58mAmerican Airlines
Deal found 4/27$858
Sa 5/1110:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Sa 5/1811:45 amEYW - ONT
2 stops10h 17mAmerican Airlines
Deal found 4/27$860
Do 5/236:00 amONT - EYW
2 stops10h 01mAmerican Airlines
Mo 5/274:58 pmEYW - ONT
1 stop9h 58mAmerican Airlines
Deal found 4/27$863
Do 5/236:00 amONT - EYW
2 stops10h 01mAmerican Airlines
Mo 5/273:48 pmEYW - ONT
2 stops9h 41mAmerican Airlines
Deal found 4/27$928
Fr 5/1710:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Fr 5/2411:42 amEYW - ONT
1 stop10h 17mAmerican Airlines
Deal found 4/27$1,955
Mi 5/2211:59 pmONT - EYW
1 stop9h 10mAmerican Airlines
Mi 6/262:40 pmEYW - ONT
1 stop11h 19mAmerican Airlines
Deal found 4/27$1,956

Cheap Ontario to Key West flights in April & May 2024

Find cheap flight options from Ontario to Key West specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Prices were last updated on April 28, 2024.
Sa 5/1110:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Sa 5/1811:42 amEYW - ONT
1 stop10h 20mAmerican Airlines
Deal found 4/27$855
Do 5/2311:59 pmONT - EYW
1 stop9h 10mAmerican Airlines
Mo 5/274:58 pmEYW - ONT
1 stop9h 58mAmerican Airlines
Deal found 4/27$858
Sa 5/1110:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Sa 5/1811:45 amEYW - ONT
2 stops10h 17mAmerican Airlines
Deal found 4/27$860
Do 5/236:00 amONT - EYW
2 stops10h 01mAmerican Airlines
Mo 5/274:58 pmEYW - ONT
1 stop9h 58mAmerican Airlines
Deal found 4/27$863
Do 5/236:00 amONT - EYW
2 stops10h 01mAmerican Airlines
Mo 5/273:48 pmEYW - ONT
2 stops9h 41mAmerican Airlines
Deal found 4/27$928
Fr 5/1710:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Fr 5/2411:42 amEYW - ONT
1 stop10h 17mAmerican Airlines
Deal found 4/27$1,955
Mi 5/2211:59 pmONT - EYW
1 stop9h 10mAmerican Airlines
Mi 6/262:40 pmEYW - ONT
1 stop11h 19mAmerican Airlines
Deal found 4/27$1,956
Mi 5/811:59 pmONT - EYW
1 stop9h 07mAmerican Airlines
Sa 5/1812:47 pmEYW - ONT
1 stop8h 35mAmerican Airlines
Deal found 4/27$1,958
Do 5/166:00 amONT - EYW
1 stop7h 27mAmerican Airlines
Di 5/2111:42 amEYW - ONT
1 stop10h 17mAmerican Airlines
Deal found 4/27$2,402

Ontario to Key West 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Key West in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
So 6/166:00 amONT - EYW
1 stop7h 24mAmerican Airlines
So 6/234:59 pmEYW - ONT
1 stop9h 00mAmerican Airlines
Deal found 4/26$721
So 6/166:25 pmONT - EYW
2 stops16h 55mUnited Airlines
Do 6/202:00 pmEYW - ONT
2 stops9h 48mUnited Airlines
Deal found 4/27$783
So 6/167:26 pmONT - EYW
2 stops12h 19mAmerican Airlines
So 6/234:59 pmEYW - ONT
1 stop9h 00mAmerican Airlines
Deal found 4/26$851
Sa 5/1110:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Sa 5/1811:42 amEYW - ONT
1 stop10h 20mAmerican Airlines
Deal found 4/27$855
Do 5/2311:59 pmONT - EYW
1 stop9h 10mAmerican Airlines
Mo 5/274:58 pmEYW - ONT
1 stop9h 58mAmerican Airlines
Deal found 4/27$858
Sa 5/1110:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Sa 5/1811:45 amEYW - ONT
2 stops10h 17mAmerican Airlines
Deal found 4/27$860
Do 5/236:00 amONT - EYW
2 stops10h 01mAmerican Airlines
Mo 5/274:58 pmEYW - ONT
1 stop9h 58mAmerican Airlines
Deal found 4/27$863
Do 5/236:00 amONT - EYW
2 stops10h 01mAmerican Airlines
Mo 5/273:48 pmEYW - ONT
2 stops9h 41mAmerican Airlines
Deal found 4/27$928
Fr 5/1710:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Fr 5/2411:42 amEYW - ONT
1 stop10h 17mAmerican Airlines
Deal found 4/27$1,955

One-way flights to Key West from Ontario

Search for one-way flight options from Ontario to Key West. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Mi 6/195:15 amONT - EYW
2 stops26h 20mUnited Airlines
Deal found 4/27$404
Do 5/97:40 pmONT - EYW
2 stops12h 19mAmerican Airlines
Deal found 4/27$418
Mi 6/1910:45 pmONT - EYW
1 stop10h 21mAmerican Airlines
Deal found 4/27$428
Do 5/910:29 pmONT - EYW
1 stop9h 32mAmerican Airlines
Deal found 4/27$473

Find flights from Ontario to Key West within your budget

Customize your flight search to find flights from Ontario to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$721 - $1,955

Route

Depart

Return

Price

OntarioKey West

ONT - EYW

ONTEYW

Ontario

So 6/16

1 stop7h 24m

Key West

So 6/23

1 stop9h 00m

$721

OntarioKey West

ONT - EYW

ONTEYW

Ontario

So 6/16

2 stops16h 55m

Key West

Do 6/20

2 stops9h 48m

$783

OntarioKey West

ONT - EYW

ONTEYW

Ontario

So 6/16

2 stops12h 19m

Key West

So 6/23

1 stop9h 00m

$851

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Sa 5/11

1 stop9h 32m

Key West

Sa 5/18

1 stop10h 20m

$855

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Do 5/23

1 stop9h 10m

Key West

Mo 5/27

1 stop9h 58m

$858

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Sa 5/11

1 stop9h 32m

Key West

Sa 5/18

2 stops10h 17m

$860

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Do 5/23

2 stops10h 01m

Key West

Mo 5/27

1 stop9h 58m

$863

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Do 5/23

2 stops10h 01m

Key West

Mo 5/27

2 stops9h 41m

$928

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Fr 5/17

1 stop9h 32m

Key West

Fr 5/24

1 stop10h 17m

$1,955

Flights are sorted by cheapest first

Deals found on 4/26

When is the cheapest time to fly from Ontario to Key West?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Key West. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Key West flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Key West by month

Plan your trip from Ontario to Key West by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Key West is currently $431 while a round-trip flight costs $964. Price data was last updated on April 21, 2024.

Currently, January is the cheapest month in which you can book a flight from Ontario to Key West (average of $374). Flying from Ontario to Key West in March is currently the most expensive (average of $504). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$374

February

$415

March

$504

April

$482

May

$475

June

$487

July

$462

August

$384

September

$408

October

$468

November

$448

December

$398

Temperature and rainfall in Key West by month

Plan your trip to Key West by taking into account the average temperature and rainfall totals by month.

EYW

Temperature

69.8 - 84.2 °F

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated April 28, 2024.
United Airlines
7.4
Good
11,221 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.2

Boarding

7.7

Food

6.7

Reviews

1 / 10

Everything was executed efficiently, orderly and with a caring and pleasant manner

United Airlines
7.4
Good
11,221 reviews
United Airlines
7.4
Good
11,221 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.2

Boarding

7.7

Food

6.7

Reviews

1 / 10

Everything was executed efficiently, orderly and with a caring and pleasant manner

American Airlines
7.3
Good
14,875 reviews
United Airlines
7.4
Good
11,221 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.2

Boarding

7.7

Food

6.7

Reviews

1 / 10

Everything was executed efficiently, orderly and with a caring and pleasant manner

Related info for your journey

Find useful and relevant information for your journey from Ontario to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Ontario to Key West for under $800 on Cheapflights?

    Yes, there are multiple flights from Ontario to Key West for under $800. The cheapest flight booked recently is on American Airlines for just $721, but on average you can expect to pay $1,305.

  • What are the cheapest airlines flying from Ontario to Key West round-trip?

    American Airlines, at $721, was found to be the cheapest airline from Ontario to Key West. An alternate airline flying to your destination would be United Airlines. American Airlines is priced at 7% lower than the current average price of a flight leaving 3 months from now.

  • What does ONT to EYW mean?

    This is defined as Ontario Airport (ONT) and Key West Airport (EYW). Codes like Key West Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Ontario to Key West that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Key West flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Key West with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Key West flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Key West that include hotel bookings?

    Yes. In addition to deals on Ontario to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Key West.

  • Can I find deals for business class flights from Ontario to Key West?

    Yes. Cheapflights offers flight deals from Ontario to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Key West that allow pets onboard?

    Many airlines flying from Ontario to Key West offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Key West?

    Yes, you can often find last-minute deals on Ontario to Key West flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Key West flight deals updated?

    The Ontario to Key West flight deals you see on this page were last updated on 4/27.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Key West
See prices for flight routes from nearby airports that may be better suited for you.

Los Angeles to Miami flights
Los Angeles to Fort Lauderdale flights
Los Angeles to Orlando flights
San Francisco to Miami flights
Burbank to Fort Lauderdale flights
San Francisco to Orlando flights
Ontario to Miami flights
Los Angeles to Tampa flights
San Francisco to Fort Lauderdale flights
Santa Ana to Fort Lauderdale flights
Ontario to Orlando flights
Oakland to Fort Lauderdale flights
San Diego to Orlando flights
San Diego to Miami flights
Ontario to Fort Lauderdale flights
Santa Ana to Miami flights
Oakland to Miami flights
San Diego to Fort Lauderdale flights
Oakland to Orlando flights
Los Angeles to West Palm Beach flights
Ontario to Tampa flights
San Jose to Miami flights
San Francisco to Tampa flights
San Jose to Fort Lauderdale flights
Burbank to Orlando flights
Santa Ana to Orlando flights
San Jose to Orlando flights
Sacramento to Miami flights
Sacramento to Fort Lauderdale flights
Sacramento to Orlando flights
Los Angeles to Orlando Sanford Intl flights
San Diego to Tampa flights
Ontario to West Palm Beach flights
San Francisco to West Palm Beach flights
San Francisco to Jacksonville flights
Los Angeles to Pensacola flights
Oakland to Tampa flights
Burbank to Miami flights
Santa Ana to Tampa flights
Los Angeles to Fort Myers flights
Ontario to Pensacola flights
Fresno to Orlando flights
Los Angeles to Sarasota flights
San Francisco to Sarasota flights
San Francisco to Fort Myers flights
San Jose to Tampa flights
Sacramento to Tampa flights
Reno to Miami flights
Los Angeles to Panama City flights
Ontario to Jacksonville flights

Top 2 airlines flying from Ontario to Key West

Discover the top 2 airlines that operate flights from Ontario to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$411Average$711FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$428Average$693FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Dallas to Philadelphia flights
Phoenix to Chicago flights
Philadelphia to Denver flights
Pittsburgh to Las Vegas flights
Texas to Florida flights
Atlanta to Savannah flights
Los Angeles to New York John F Kennedy Intl Airport flights
USA to Italy flights
San Francisco to Shanghai flights
Los Angeles to Guadalajara flights
Dallas to New Orleans flights
Ontario to Fort Hood flights

Search flights from Ontario to Key West by cabin class

Find flights from Ontario to Key West, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Perugia Sant Egidio
Flights to Biarritz Parme
Flights to Argostoli Cephalonia
Flights to Melilla
Flights to Milas–Bodrum
Flights to Girona Costa Brava
Flights to Hakodate
Flights to Fez Sais
Flights to Constantine Ain El Bey
Flights to Zakynthos Dionsios Salomos
Flights to Bourgas
Flights to Bodø
Flights to Reggio Calabria Tito Menniti
Flights to Bastia Poretta
Flights to Skiathos
Flights to Kalamata
Flights to Batumi
Flights to Menorca/Mahon
Flights to Kristiansand Kjevik
Flights to Champaign University-Willard
Flights to Kagoshima
Flights to Ohrid
Flights to Clermont-Ferrand Aulnat
Flights to Parikia Paros

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Key West?

Cheapflights helps you search for flights from Ontario to Key West via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Key West?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Key West by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to Key West with no change fees?

Certainly. Search results for flights to Key West from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to Key West become cheaper?

Yes! Start tracking prices for Ontario to Key West flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines