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?

Most connecting flights from Ontario to Key West pass through Houston George Bush Intcntl (IAH), which handles 100% of one-stop traffic on this route.

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.

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 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.

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 $484 to $4,084. 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 higher than usual. Average one-way flight prices are about $755, which is 45% above the typical average for this route.

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

Which airline is the cheapest to fly from Ontario to Key West?

United Airlines ($589) and Delta ($623) are the cheapest airlines to fly round-trip from Ontario to Key West according to KAYAK data over the last 5 days.

What is the cheapest layover airport when flying from Ontario to Key West?

Flights via Houston George Bush Intcntl (IAH) offer the most affordable fares, with an average round-trip price of $543. Based on KAYAK data over the past 3 months.

When flying from Ontario to Key West which airport offers the shortest layover?

Houston George Bush Intcntl (IAH) had the shortest average connection time for Ontario to Key West layovers at 4h 31m over the past 3 months.

$464 CHEAP FLIGHTS from Ontario to Key West (ONT - EYW)

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Cheapest round-trip

$484

Typical prices: $378-$694

Multiple Airlines

Sun 11/18Wed 11/21

ONT - EYW • 2 stops

Cheapest one-way

$464

Typical prices: $342-$539

United Airlines

Thu 12/20

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.

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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.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Key West

Wed, Nov 18 - Sat, Nov 21

11:52 am - 2:16 pmONT Ontario-EYW Key West

23h 24m2 stops Denver Intl Tampa

9:46 pm - 12:14 amEYW Key West-ONT Ontario

29h 28m2 stops Tampa St. Petersburg Denver Intl

$484Multiple Airlines

Mon, Nov 9 - Mon, Nov 16

6:30 am - 12:36 pmONT Ontario-EYW Key West

27h 06m2 stops Denver Intl Tampa

12:59 pm - 10:35 amEYW Key West-ONT Ontario

24h 36m2 stops Tampa Denver Intl

$572Multiple Airlines

Mon, Dec 21 - Fri, Dec 25

11:52 pm - 11:41 amONT Ontario-EYW Key West

8h 49m1 stop Chicago O'Hare Intl

4:04 pm - 10:31 pmEYW Key West-ONT Ontario

9h 27m1 stop Chicago O'Hare Intl

$589United Airlines

Mon, Dec 21 - Fri, Dec 25

7:06 am - 5:24 pmONT Ontario-EYW Key West

7h 18m1 stop Atlanta Hartsfield-Jackson

11:48 am - 10:09 pmEYW Key West-ONT Ontario

13h 21m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$623Delta

Mon, Nov 2 - Sat, Nov 7

7:07 am - 5:15 pmONT Ontario-EYW Key West

7h 08m1 stop Atlanta Hartsfield-Jackson

7:40 am - 5:12 pmEYW Key West-ONT Ontario

12h 32m2 stops Atlanta Hartsfield-Jackson Seattle/Tacoma Intl

$624Delta

Sat, Dec 5 - Sat, Dec 12

7:05 am - 8:01 pmONT Ontario-EYW Key West

9h 56m1 stop Atlanta Hartsfield-Jackson

2:06 pm - 7:55 pmEYW Key West-ONT Ontario

8h 49m1 stop Atlanta Hartsfield-Jackson

$669Delta

Sat, Dec 19 - Thu, Dec 24

11:52 pm - 11:41 amONT Ontario-EYW Key West

8h 49m1 stop Chicago O'Hare Intl

4:04 pm - 10:31 pmEYW Key West-ONT Ontario

9h 27m1 stop Chicago O'Hare Intl

$679United Airlines

Tue, Dec 22 - Fri, Dec 25

7:06 am - 5:24 pmONT Ontario-EYW Key West

7h 18m1 stop Atlanta Hartsfield-Jackson

11:48 am - 10:09 pmEYW Key West-ONT Ontario

13h 21m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$682Delta

Fri, Nov 20 - Tue, Nov 24

7:30 am - 9:24 amONT Ontario-EYW Key West

22h 54m2 stops Houston George Bush Intcntl Tampa

10:04 am - 10:45 amEYW Key West-ONT Ontario

27h 41m2 stops Tampa Denver Intl

$684Multiple Airlines

Sun, Dec 20 - Sat, Dec 26

5:05 pm - 10:53 amONT Ontario-EYW Key West

14h 48m2 stops Salt Lake City Atlanta Hartsfield-Jackson

7:15 am - 10:00 amEYW Key West-ONT Ontario

29h 45m1 stop Atlanta Hartsfield-Jackson

$688Delta

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.

Airlines

Layovers

Which airline is the cheapest to fly from Ontario to Key West?: United Airlines ($589) and Delta ($623) are the cheapest airlines to fly round-trip from Ontario to Key West according to KAYAK data over the last 5 days.

Find deals

Cheapest flight	$464

One-way 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

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.

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.
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 $484 to $4,084. 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 higher than usual. Average one-way flight prices are about $755, which is 45% 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?
Most connecting flights from Ontario to Key West pass through Houston George Bush Intcntl (IAH), which handles 100% of one-stop traffic on this route.
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.
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.

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're arriving late at night and need somewhere to stay, check out these hotels close to Key West Airport.

• Parrot Key Hotel & Villas
• Margaritaville Beach House Key West
• Havana Cabana at Key West

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ONT - EYW

$464 Find Cheap Flights from Ontario to Key West - Compare and Save

Everything you should know

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

Recent round-trip flight deals from Ontario to Key West

Recent one-way flight deals from Ontario to Key West

Recent last minute flight deals from Ontario to Key West

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

Which airline is the cheapest to fly from Ontario to Key West?

What is the cheapest layover airport when flying from Ontario to Key West?

When flying from Ontario to Key West which airport offers the shortest layover?

Key details for Ontario to Key West flights

Cheapest flight

When to book flights from Ontario to Key West

Your Ontario to Key West flight questions, answered

Your guide to booking Ontario to Key West flights

More options for your flight from Ontario to Key West

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

Information on your arrival and departure airports

Cabin class types available on flights from Ontario to Key West

Find direct flights to and from Ontario and Key West

Flights from domestic origins to Key West

Flights to other popular destinations