When did momondo last update prices for flights from Ontario Airport to Key West Airport?

Prices for flights from Ontario Airport to Key West Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Key West Airport?

As of January 2026, there is 1 operator available to choose from for flights from Ontario Airport to Key West Airport.

How old do you have to be to fly from Ontario Airport to Key West Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$359 Cheap Flights from Ontario to Key West in 2026

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Find the cheapest flights from Ontario to Key West

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 4:18 pm

ONT

EYW

7h 18m

1 stop

2:40 pm - 10:07 pm

EYW

ONT

10h 27m

2 stops

$359American Airlines

Tue, Mar 10 - Tue, Mar 17

7:59 pm - 11:11 am

ONT

EYW

12h 12m

2 stops

2:40 pm - 10:07 pm

EYW

ONT

10h 27m

2 stops

$365American Airlines

Tue, Mar 10 - Tue, Mar 17

6:00 am - 4:18 pm

ONT

EYW

7h 18m

1 stop

12:52 pm - 7:45 pm

EYW

ONT

9h 53m

1 stop

$389American Airlines

Tue, Mar 10 - Tue, Mar 17

7:16 am - 11:56 pm

ONT

EYW

13h 40m

2 stops

5:15 pm - 10:48 pm

EYW

ONT

8h 33m

1 stop

$394American Airlines

Sat, Feb 7 - Wed, Feb 11

6:00 am - 4:24 pm

ONT

EYW

7h 24m

1 stop

2:40 pm - 10:07 pm

EYW

ONT

10h 27m

2 stops

$419American Airlines

Wed, Mar 11 - Tue, Mar 17

7:00 am - 10:37 pm

ONT

EYW

12h 37m

2 stops

2:40 pm - 10:07 pm

EYW

ONT

10h 27m

2 stops

$425American Airlines

Wed, Mar 11 - Tue, Mar 17

7:16 am - 11:56 pm

ONT

EYW

13h 40m

2 stops

6:06 am - 2:18 pm

EYW

ONT

11h 12m

2 stops

$430American Airlines

Sat, Feb 7 - Wed, Feb 11

11:59 pm - 2:55 pm

ONT

EYW

10h 56m

1 stop

4:05 pm - 10:18 pm

EYW

ONT

9h 13m

1 stop

$439United Airlines

Sat, Mar 7 - Thu, Mar 12

6:00 am - 4:24 pm

ONT

EYW

7h 24m

1 stop

12:52 pm - 7:45 pm

EYW

ONT

9h 53m

1 stop

$449American Airlines

Wed, Mar 11 - Tue, Mar 17

6:00 am - 4:18 pm

ONT

EYW

7h 18m

1 stop

12:52 pm - 7:45 pm

EYW

ONT

9h 53m

1 stop

$458American Airlines

Tue, Mar 10 - Tue, Mar 17

United Airlines flights from Ontario to Key West

Our best United Airlines deals on Ontario to Key West flight tickets

United Airlines

Mar 7

ONT11:59 pmOntario

10h 56m

1 stop

EYW2:55 pmKey West

Mar 12

EYW4:05 pmKey West

9h 13m

1 stop

ONT10:18 pmOntario

$439

United Airlines

Apr 5

ONT6:05 amOntario

6h 52m

1 stop

EYW3:57 pmKey West

Apr 10

EYW4:38 pmKey West

22h 36m

2 stops

ONT12:14 pmOntario

$570

United Airlines

Mar 7

ONT1:50 pmOntario

22h 46m

2 stops

EYW3:36 pmKey West

Mar 12

EYW4:05 pmKey West

9h 13m

1 stop

ONT10:18 pmOntario

$587

American Airlines flights from Ontario to Key West

Our best American Airlines deals on Ontario to Key West flight tickets

American Airlines

Mar 10

ONT6:00 amOntario

7h 18m

1 stop

EYW4:18 pmKey West

Mar 17

EYW2:40 pmKey West

10h 27m

2 stops

ONT10:07 pmOntario

$359

American Airlines

Mar 10

ONT7:59 pmOntario

12h 12m

2 stops

EYW11:11 amKey West

Mar 17

EYW2:40 pmKey West

10h 27m

2 stops

ONT10:07 pmOntario

$365

American Airlines

Mar 10

ONT6:00 amOntario

7h 18m

1 stop

EYW4:18 pmKey West

Mar 17

EYW12:52 pmKey West

9h 53m

1 stop

ONT7:45 pmOntario

$389

Fly from

Fly to

Route

Depart

Return

Price

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Tue 3/10

6:00 am-4:18 pm

1 stop7h 18m

Key West

Tue 3/17

2:40 pm-10:07 pm

2 stops10h 27m

$359

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Tue 3/10

7:59 pm-11:11 am

2 stops12h 12m

Key West

Tue 3/17

2:40 pm-10:07 pm

2 stops10h 27m

$365

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Tue 3/10

6:00 am-4:18 pm

1 stop7h 18m

Key West

Tue 3/17

12:52 pm-7:45 pm

1 stop9h 53m

$389

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Sat 2/7

7:16 am-11:56 pm

2 stops13h 40m

Key West

Wed 2/11

5:15 pm-10:48 pm

1 stop8h 33m

$394

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Wed 3/11

6:00 am-4:24 pm

1 stop7h 24m

Key West

Tue 3/17

2:40 pm-10:07 pm

2 stops10h 27m

$419

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Wed 3/11

7:00 am-10:37 pm

2 stops12h 37m

Key West

Tue 3/17

2:40 pm-10:07 pm

2 stops10h 27m

$425

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Sat 2/7

7:16 am-11:56 pm

2 stops13h 40m

Key West

Wed 2/11

6:06 am-2:18 pm

2 stops11h 12m

$430

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Sat 3/7

11:59 pm-2:55 pm

1 stop10h 56m

Key West

Thu 3/12

4:05 pm-10:18 pm

1 stop9h 13m

$439

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Wed 3/11

6:00 am-4:24 pm

1 stop7h 24m

Key West

Tue 3/17

12:52 pm-7:45 pm

1 stop9h 53m

$449

OntarioKey West

ONT - EYW

ONTEYW

Ontario

Tue 3/10

6:00 am-4:18 pm

1 stop7h 18m

Key West

Tue 3/17

12:52 pm-7:45 pm

1 stop9h 53m

$458

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Key West?

United Airlines is the most popular carrier operating from Ontario to Key West

What airlines fly to Key West?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Key West from Ontario according to our data. American Airlines is the first choice among our users, with 83% of people opting to fly with this airline when traveling to Key West. Keep in mind that there are 3 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Key West according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Key West (ONT to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Key West

Fastest flight time	6h 42m
Direct flights	None

The fastest flight from Ontario to Key West takes 6h 42m

There are no direct flights from Ontario to Key West. There are no popular flight routes from Ontario to Key West.

Search flight deals

How far is Ontario to Key West by plane?
The straight-line distance from Ontario to Key West is 2243.1 mi. Typically, this will take 6h 42m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Key West Airport?
Prices for flights from Ontario Airport to Key West Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Key West Airport?
As of January 2026, there is 1 operator available to choose from for flights from Ontario Airport to Key West Airport.
How old do you have to be to fly from Ontario Airport to Key West Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ontario to Key West?
momondo data reveals that the most frequently booked airline on the route from Ontario to Key West is American Airlines, representing 100% of all bookings.

Best airlines flying from Ontario to Key West

Compare and see reviews for airlines that fly from Ontario to Key West with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $314	Free Cancellation	Rating 7.2 11,193 reviews		Search American Airlines flights

Big Pine Key

Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Key West?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Key West from Ontario.

Can I find flights from Ontario to Key West with flexible booking policies on momondo?

All flight searches from Ontario to Key West on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Key West?

Once all potential Ontario to Key West flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Key West right now. Can momondo alert me if prices change?

Price alerts on flights to Key West from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.