ONT - EYW

$250 Find Cheap Flights from Ontario to Key West - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$536
Typical prices: $459-$694
Delta
Wed 9/5Sun 9/9
ONT - EYW • 1 stop
Cheapest one-way
$250
Typical prices: $342-$539
Multiple Airlines
Thu 9/20
ONT - EYW • 2 stops
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)
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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

Wed, Sep 2 - Sun, Sep 6
Delta Logo
6:00 am - 7:57 pmONT  Ontario-EYW Key West
10h 57m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
11:48 am - 6:30 pmEYW  Key West-ONT Ontario
9h 42m1 stop Atlanta Hartsfield-Jackson
$604Delta
Wed, Sep 2 - Sun, Sep 6
Delta Logo
7:05 am - 7:57 pmONT  Ontario-EYW Key West
9h 52m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:48 am - 6:30 pmEYW  Key West-ONT Ontario
9h 42m1 stop Atlanta Hartsfield-Jackson
$625Delta
Tue, Jan 5 - Fri, Jan 8
United Airlines Logo
1:00 pm - 3:06 pmONT  Ontario-EYW Key West
23h 06m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
4:05 pm - 12:20 pmEYW  Key West-ONT Ontario
23h 15m2 stops Chicago O'Hare Intl San Francisco
$658United Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
6:00 am - 7:39 pmONT  Ontario-EYW Key West
10h 39m2 stops Dallas/Fort Worth Miami
American Airlines Logo
10:15 am - 7:15 pmEYW  Key West-ONT Ontario
12h 00m2 stops Miami Phoenix Sky Harbor Intl
$664American Airlines
Fri, Sep 4 - Tue, Sep 8
Delta Logo
10:00 pm - 10:50 amONT  Ontario-EYW Key West
9h 50m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:00 pm - 8:24 pmEYW  Key West-ONT Ontario
9h 24m1 stop Atlanta Hartsfield-Jackson
$689Delta
Tue, Jan 5 - Fri, Jan 8
United Airlines Logo
1:00 pm - 3:06 pmONT  Ontario-EYW Key West
23h 06m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
4:05 pm - 6:44 pmEYW  Key West-ONT Ontario
29h 39m1 stop Chicago O'Hare Intl
$699United Airlines
Sun, Sep 20 - Fri, Sep 25
Delta Logo
7:05 am - 8:00 pmONT  Ontario-EYW Key West
9h 55m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:00 pm - 6:07 pmEYW  Key West-ONT Ontario
7h 07m1 stop Atlanta Hartsfield-Jackson
$757Delta
Sun, Sep 20 - Fri, Sep 25
American Airlines Logo
7:11 pm - 9:51 amONT  Ontario-EYW Key West
11h 40m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
1:47 pm - 10:37 pmEYW  Key West-ONT Ontario
11h 50m2 stops Miami Dallas/Fort Worth
$767American Airlines
Sun, Sep 20 - Fri, Sep 25
Delta Logo
6:00 pm - 10:46 amONT  Ontario-EYW Key West
13h 46m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson
Delta Logo
2:00 pm - 6:07 pmEYW  Key West-ONT Ontario
7h 07m1 stop Atlanta Hartsfield-Jackson
$793Delta
Fri, Oct 16 - Mon, Oct 19
Delta Logo
6:01 pm - 10:43 amONT  Ontario-EYW Key West
13h 42m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson
Delta Logo
2:00 pm - 6:22 pmEYW  Key West-ONT Ontario
7h 22m1 stop Atlanta Hartsfield-Jackson
$882Delta
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 from Ontario to Key West with more confidence.

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

Round-trip flights from Ontario to Key West start at $536. Prices are typical for this route right now, with typical round-trip fares ranging from $459 to $694. The lowest price found in the past 5 days was $536 on Delta.

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Key details for Ontario to Key West flights

Low season

July

Cheapest flight

$250
Most popular time to fly and prices are also 27% lower on average.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

  • 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.

  • 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
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 60% on the Ontario to Key West route. 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.

  • 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.

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

    A nonstop flight from Ontario to Key West takes 0h 00m, covering 2,242 miles.

  • What are the earliest and latest flights from Ontario to Key West?

    These are the earliest and latest flight times available from Ontario to Key West:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • 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.

  • 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 $536 to $4,031. That means the highest observed fare was about 8x 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 lower than usual. Average one-way flight prices are about $470, which is 10% below the typical average for this route.

  • 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 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

  • 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.

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 can be flexible, aim for a Tuesday departure instead of Saturday. On this route, Tuesday flights average $348 - about $518 less than Saturday (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.
    - Havana Cabana at Key West
    - Fairfield Inn & Suites by Marriott Key West at The Keys Collection
    - Parrot Key Hotel & Villas

Everything you need to know for your flight from Ontario to Key West

Information on your arrival and departure airports

Ontario (ONT)
Key West (EYW)