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ONT - EYW

$449 Find Cheap Flights from Ontario to Key West - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$449
Typical prices: $459-$694
Delta
Fri 1/5Fri 1/12
ONT - EYW • 1 stop
Cheapest one-way
$790
Typical prices: $342-$539
Delta
Mon 12/24
ONT - EYW • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Key West. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
March
Cheapest • 32% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Atlanta Hartsfield-Jackson (ATL)
Cheapest • Avg $527 (round-trip)
Houston George Bush Intcntl (IAH)
Shortest trip • 7h 44m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Ontario to Key West (ONT-EYW)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Key West

Mon, Mar 22 - Wed, Mar 31
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$449Delta
Tue, Mar 23 - Wed, Mar 31
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$449Delta
Tue, Jan 5 - Tue, Jan 12
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$449Delta
Wed, Jan 6 - Tue, Jan 12
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$475Delta
Mon, Mar 22 - Tue, Mar 30
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$528Delta
Tue, Mar 23 - Tue, Mar 30
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$528Delta
Tue, Jan 5 - Tue, Jan 12
Delta Logo
6:00 am - 7:43 pmONT  Ontario-EYW Key West
10h 43m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$533Delta
Wed, Oct 21 - Wed, Oct 28
American Airlines Logo
7:34 pm - 9:54 amONT  Ontario-EYW Key West
11h 20m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
4:45 pm - 10:59 pmEYW  Key West-ONT Ontario
9h 14m1 stop Charlotte Douglas
$544American Airlines
Tue, Mar 23 - Thu, Apr 1
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$558Delta
Mon, Mar 22 - Thu, Apr 1
Delta Logo
7:00 am - 7:43 pmONT  Ontario-EYW Key West
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$558Delta
Booking Insights

Price, demand and travel trends for Ontario to Key West flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to Key West?

Round-trip flights from Ontario to Key West typically range from $459 to $694. The lowest price found in the past 5 days was $449, on Delta.

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Key details for Ontario to Key West flights

Low season

July

Cheapest flight

$449
Round-trip flight from Ontario to Key West

When to book flights from Ontario to Key West

Are your dates flexible? Find out the best times to travel from Ontario to Key West based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to Key West flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Key West?

    Only Economy Class is available on flights from Ontario to Key West.

  • How long is a flight from Ontario to Key West?

    A nonstop flight from Ontario to Key West takes 00m, covering 2,242 miles.

  • Do I need a passport to fly from Ontario to Key West?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Ontario to Key West flight?

    Round-trip flights from Ontario to Key West range from $459 to $694, with an average of $628 over the past 12 months. Anything below $459 counts as a good deal.

  • Have flight prices from Ontario to Key West changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $449 to $1,884. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Ontario to Key West looking right now?

    One-way fares from Ontario to Key West are currently higher than usual. Average one-way flight prices are about $862, which is 66% above the typical average for this route.

  • What car rental options are available at Key West Airport (EYW)?

    Key West Airport (EYW) hosts 5 major car rental companies, with daily rates starting from around $29 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Enterprise Rent-A-Car
    • Alamo

  • Which airports can I use when flying from Ontario to Key West?

    Flights from Ontario to Key West usually depart from Ontario (ONT) and arrive at Key West (EYW).

  • Which airports do connecting flights from Ontario to Key West pass through?

    Connecting flights from Ontario to Key West most commonly pass through:

    • Houston George Bush Intcntl (IAH) - 67% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 33% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to Key West?

    Yes. Flexible dates can save you up to 60% on flights from Ontario to Key West. Tuesday is the cheapest departure day at $348 round-trip on average, while Saturday is the most expensive at $866, a difference of $518.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to Key West?

    Flying via Houston George Bush Intcntl (IAH) gives the shortest average 1-stop total travel time at 7h 44m, compared with 8h 31m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Ontario and Key West?

    Key West is 3 hours ahead of Ontario (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Key West?

    Some of the most popular sights in Key West are Duval Street, Key West Historic District and Mallory Square. These are among the most viewed places in Key West on KAYAK.

Your guide to booking Ontario to Key West flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $348, about $518 less than Saturday fares (60% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Key West trip for March. Fares historically average $426 round-trip in that month - typically $440 less than the most expensive month, which is November (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Key West Airport.

    • Parrot Key Hotel & Villas
    • Havana Cabana at Key West
    • DoubleTree by Hilton Hotel Grand Key - Key West

More options for your flight from Ontario to Key West

Complete your trip to Key West with a hotel stay or car rental

Car rentals in Key West
Hotels in Key West
Vacations in Key West