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Cheap flights from Ontario to Key West from $416

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:00 am - 5:11 pmONT  Ontario-EYW Key West
7h 11m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$416Delta
Fri, Jan 29 - Tue, Feb 2
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
$416Delta
Sat, Jan 30 - Tue, Feb 2
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
$421Delta
Sat, Jan 30 - Tue, Feb 2
American Airlines Logo
6:00 am - 4:55 pmONT  Ontario-EYW Key West
7h 55m1 stop Dallas/Fort Worth
American Airlines Logo
3:41 pm - 11:46 pmEYW  Key West-ONT Ontario
11h 05m2 stops Charlotte Douglas Dallas/Fort Worth
$472American Airlines
Sat, Nov 7 - Wed, Nov 11
American Airlines Logo
7:00 am - 4:55 pmONT  Ontario-EYW Key West
6h 55m1 stop Dallas/Fort Worth
American Airlines Logo
3:41 pm - 10:12 pmEYW  Key West-ONT Ontario
9h 31m1 stop Charlotte Douglas
$489American Airlines
Fri, Nov 6 - Wed, Nov 11
American Airlines Logo
6:00 am - 4:55 pmONT  Ontario-EYW Key West
7h 55m1 stop Dallas/Fort Worth
American Airlines Logo
2:26 pm - 6:42 pmEYW  Key West-ONT Ontario
7h 16m1 stop Dallas/Fort Worth
$489American Airlines
Sat, Nov 7 - Thu, Nov 12
American Airlines Logo
6:00 am - 4:55 pmONT  Ontario-EYW Key West
7h 55m1 stop Dallas/Fort Worth
American Airlines Logo
3:41 pm - 10:12 pmEYW  Key West-ONT Ontario
9h 31m1 stop Charlotte Douglas
$489American Airlines
Sat, Nov 7 - Wed, Nov 11
American Airlines Logo
7:00 am - 4:55 pmONT  Ontario-EYW Key West
6h 55m1 stop Dallas/Fort Worth
American Airlines Logo
2:26 pm - 9:32 pmEYW  Key West-ONT Ontario
10h 06m1 stop Dallas/Fort Worth
$489American Airlines
Fri, Nov 6 - Fri, Nov 13
American Airlines Logo
6:00 am - 4:55 pmONT  Ontario-EYW Key West
7h 55m1 stop Dallas/Fort Worth
American Airlines Logo
2:26 pm - 9:32 pmEYW  Key West-ONT Ontario
10h 06m1 stop Dallas/Fort Worth
$489American Airlines
Sat, Nov 7 - Fri, Nov 13
Delta Logo
7:00 am - 5:11 pmONT  Ontario-EYW Key West
7h 11m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 10:14 pmEYW  Key West-ONT Ontario
10h 39m1 stop Atlanta Hartsfield-Jackson
$499Delta
Fri, Jan 29 - Thu, Feb 4

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Delta flights from Ontario to Key West

Our best Delta deals on Ontario to Key West flight tickets
Delta
Jan 29
ONT7:00 amOntario
7h 11m
1 stop
EYW5:11 pmKey West
Feb 2
EYW2:35 pmKey West
10h 39m
1 stop
ONT10:14 pmOntario
$416
Delta
Jan 30
ONT6:00 amOntario
10h 43m
2 stops
EYW7:43 pmKey West
Feb 2
EYW2:35 pmKey West
10h 39m
1 stop
ONT10:14 pmOntario
$421
Delta
Jan 29
ONT7:00 amOntario
7h 11m
1 stop
EYW5:11 pmKey West
Feb 4
EYW2:35 pmKey West
10h 39m
1 stop
ONT10:14 pmOntario
$499

American Airlines flights from Ontario to Key West

Our best American Airlines deals on Ontario to Key West flight tickets
American Airlines
Nov 7
ONT6:00 amOntario
7h 55m
1 stop
EYW4:55 pmKey West
Nov 11
EYW3:41 pmKey West
11h 05m
2 stops
ONT11:46 pmOntario
$472
American Airlines
Nov 6
ONT7:00 amOntario
6h 55m
1 stop
EYW4:55 pmKey West
Nov 13
EYW2:26 pmKey West
10h 06m
1 stop
ONT9:32 pmOntario
$489
American Airlines
Nov 7
ONT7:00 amOntario
6h 55m
1 stop
EYW4:55 pmKey West
Nov 13
EYW2:26 pmKey West
10h 06m
1 stop
ONT9:32 pmOntario
$506

momondo Fare Finder

 
Use the filters below to find and compare flights from Ontario to Key West that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Fri 1/29

7:00 am-5:11 pm

1 stop7h 11m

Key West

Tue 2/2

2:35 pm-10:14 pm

1 stop10h 39m

$416

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Sat 1/30

7:00 am-7:43 pm

1 stop9h 43m

Key West

Tue 2/2

2:35 pm-10:14 pm

1 stop10h 39m

$416

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Sat 1/30

6:00 am-7:43 pm

2 stops10h 43m

Key West

Tue 2/2

2:35 pm-10:14 pm

1 stop10h 39m

$421

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Sat 11/7

6:00 am-4:55 pm

1 stop7h 55m

Key West

Wed 11/11

3:41 pm-11:46 pm

2 stops11h 05m

$472

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Fri 11/6

7:00 am-4:55 pm

1 stop6h 55m

Key West

Wed 11/11

3:41 pm-10:12 pm

1 stop9h 31m

$489
Quickest round-trip

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Sat 11/7

6:00 am-4:55 pm

1 stop7h 55m

Key West

Thu 11/12

2:26 pm-6:42 pm

1 stop7h 16m

$489

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Sat 11/7

6:00 am-4:55 pm

1 stop7h 55m

Key West

Wed 11/11

3:41 pm-10:12 pm

1 stop9h 31m

$489

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Fri 11/6

7:00 am-4:55 pm

1 stop6h 55m

Key West

Fri 11/13

2:26 pm-9:32 pm

1 stop10h 06m

$489

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Sat 11/7

6:00 am-4:55 pm

1 stop7h 55m

Key West

Fri 11/13

2:26 pm-9:32 pm

1 stop10h 06m

$489

OntarioKey West

ONT Ontario - EYW Key West

ONTEYW

Ontario

Fri 1/29

7:00 am-5:11 pm

1 stop7h 11m

Key West

Thu 2/4

2:35 pm-10:14 pm

1 stop10h 39m

$499

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

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 and American Airlines are the most popular carriers operating from Ontario to Key West

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

Best Price Found

$433

Fastest flight time

7h 11m

Direct flights

None
The best one-way flight to Key West from Ontario in the past 72 hours is $433. The best round-trip flight deal from Ontario to Key West found on momondo in the last 72 hours is $416.
The fastest flight from Ontario to Key West takes 7h 11m
There are no direct flights from Ontario to Key West. There are no popular flight routes from Ontario to Key West.
Search flight deals

Frequently asked questions about flying from Ontario to Key West

  • 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 7h 11m 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 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.

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
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.

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