Find Cheap Flights from Kansas City to Ontario (MCI - ONT)

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Sat 12/16
Sat 12/23
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Good to Know

Average Price:
$392
(avg. price over the last 2 weeks)
Good Deal:
$291
or less (round trip)

When to Book Flights from Kansas City to Ontario

Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $291 or less.
The cheapest flight from Kansas City to Ontario was found 74 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
Morning departure is around 7% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Kansas City to Ontario Flights

How long does a flight from Kansas City to Ontario take?
An average nonstop flight takes 6h 38m, covering a distance of 1315 miles.
Which airlines provide the cheapest flights from Kansas City to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($150), Multiple Airlines ($275) and United ($340).
Do I need a passport to fly between Kansas City and Ontario?
No.
What’s the cheapest day of the week to fly Kansas City to Ontario?
For Kansas City to Ontario, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Ontario back to Kansas City, the best deals are generally found on Thursday, with Saturday being the most expensive.

Book cheap flights from Kansas City to Ontario (round-trip)

Airports
Origin
Kansas City
$150
only
$150
Destination
Ontario
$150
only
$150
Tue, Jan 9
MCI
ONT
15h 18m
Tue, Jan 16
ONT
MCI
12h 31m
Trip: 8 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

Fri, Feb 16
MCI
ONT
15h 18m
Sat, Feb 24
ONT
MCI
6h 14m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 3
MCI
ONT
24h 17m
Tue, Feb 6
ONT
MCI
12h 31m
Trip: 4 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

AUS
LAS
Excellent 8.0

Efficient

N/a

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

TYS
MCO
Okay 5.0

Great people

The plane wasn’t very clean

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

Mon, Apr 2
MCI
ONT
8h 45m
Tue, Apr 3
ONT
MCI
7h 38m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 52353 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
LAX
NRT
Good 7.3

Good price

Stink in the plane

IAD
MUC
Good 6.3

Crew and food.

The old bait and switch. United is not and will never be Lufthansa. Cattle call seating.

MIA
ORD
Excellent 9.0

That it got me to Paris safe

No outlets to charge your phone, and the tv played the same movie over and over. The meals were also cheap. Didn't like any of them. Should have flown southwest or delta.

LHR
SFO
Excellent 9.0

Fortunately as a passenger the economy flight area was very spacious due to low numbers of passengers. Which provided a comfortable seating space.

The entertainment could and been a little more variable in the film range provided. But generally overall I had a excellent flight. Food was good. Crew were very good and I would definitely consider flying United on my next visit out and recommend that my family did. Thank you United.

FLL
ORD
Excellent 8.0

no aisle seat

Tue, Mar 13
MCI
ONT
15h 09m
Tue, Mar 20
ONT
MCI
12h 30m
Trip: 8 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
AUS
LAS
Excellent 8.0

Efficient

N/a

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

Tue, Jan 2
MCI
ONT
15h 46m
Thu, Jan 4
ONT
MCI
12h 42m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

TYS
MCO
Okay 5.0

Great people

The plane wasn’t very clean

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

MSY
PVD
Excellent 8.0

The price!

Sun, Jun 3
MCI
ONT
6h 38m
Thu, Jun 7
ONT
MCI
6h 53m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 52353 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
PUJ
EWR
Good 7.3

The flight was very hot and uncomfortable

IAD
CDG
Good 7.6

The food was particularly poor this flight.

RSW
EWR
Okay 5.3

Waiting

LHR
SFO
Excellent 9.0

Fortunately as a passenger the economy flight area was very spacious due to low numbers of passengers. Which provided a comfortable seating space.

The entertainment could and been a little more variable in the film range provided. But generally overall I had a excellent flight. Food was good. Crew were very good and I would definitely consider flying United on my next visit out and recommend that my family did. Thank you United.

MCO
EWR
Excellent 10.0

Excellent support from everyone as all were very helpful with assisting my need for wheel chair.

Sat, May 12
MCI
ONT
15h 03m
Wed, May 16
ONT
MCI
12h 53m
Trip: 5 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

AUS
LAS
Excellent 8.0

Efficient

N/a

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

Sun, Mar 18
MCI
ONT
15h 09m
Fri, Mar 23
ONT
MCI
21h 25m
Trip: 6 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

AUS
LAS
Excellent 8.0

Efficient

N/a

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

Fri, Dec 22
MCI
ONT
15h 46m
Mon, Dec 25
ONT
MCI
23h 03m
Trip: 4 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

AUS
LAS
Excellent 8.0

Efficient

N/a

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

MSY
PVD
Excellent 8.0

The price!

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

Fri, Dec 22
MCI
ONT
15h 46m
Thu, Dec 28
ONT
MCI
12h 32m
Trip: 7 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MSY
PVD
Excellent 8.0

The price!

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

Sat, May 26
MCI
ONT
15h 03m
Sat, Jun 2
ONT
MCI
12h 53m
Trip: 8 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

TYS
MCO
Okay 5.0

Great people

The plane wasn’t very clean

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

AUS
LAS
Excellent 8.0

Efficient

N/a

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

Fri, Dec 29
MCI
ONT
15h 46m
Tue, Jan 2
ONT
MCI
12h 32m
Trip: 5 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

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*
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Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.