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Cheap flights from Missouri to Los Angeles from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Los Angeles departing on 8/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Missouri to Los Angeles

Cheap round-trip flights

Frontier Logo
7:52 pm - 11:50 pmSTL-ONT
5h 58m1 stop
Frontier Logo
12:59 am - 9:07 amONT-STL
6h 08m1 stop
$205Frontier
Find Deal
Sal, Kas 4 - Cum, Kas 7
Frontier Logo
7:52 pm - 11:50 pmSTL-ONT
5h 58m1 stop
Frontier Logo
12:59 am - 9:07 amONT-STL
6h 08m1 stop
$206Frontier
Find Deal
Çar, Eki 8 - Sal, Eki 21
American Airlines Logo
5:45 am - 9:28 amSGF-ONT
5h 43m1 stop
American Airlines Logo
11:59 pm - 8:31 amONT-SGF
6h 32m1 stop
$269American Airlines
Find Deal
Per, Ara 25 - Per, Oca 1
American Airlines Logo
4:15 pm - 9:42 pmSGF-ONT
7h 27m2 stops
American Airlines Logo
11:59 pm - 9:37 amONT-SGF
7h 38m1 stop
$274American Airlines
Find Deal
Per, Ara 25 - Per, Oca 1
Hawaiian Airlines Logo
7:00 am - 3:12 pmSTL-ONT
10h 12m1 stop
Hawaiian Airlines Logo
11:30 am - 11:56 pmONT-STL
10h 26m1 stop
$278Hawaiian Airlines
Find Deal
Sal, Ara 9 - Cmt, Ara 13
Southwest Logo
8:45 am - 2:40 pmMCI-ONT
7h 55m1 stop
Southwest Logo
12:35 pm - 7:50 pmONT-MCI
5h 15m1 stop
$292Southwest
Find Deal
Çar, Eyl 17 - Çar, Eyl 24
Alaska Airlines Logo
4:55 pm - 11:53 pmMCI-ONT
8h 58m1 stop
Alaska Airlines Logo
3:04 pm - 11:59 pmONT-MCI
6h 55m1 stop
$296Alaska Airlines
Find Deal
Cum, Ağu 22 - Pzt, Ağu 25
Alaska Airlines Logo
5:57 pm - 11:51 pmMCI-ONT
7h 54m1 stop
Alaska Airlines Logo
1:31 pm - 11:59 pmONT-MCI
8h 28m1 stop
$311Alaska Airlines
Find Deal
Cum, Eki 17 - Cmt, Eki 25
Hawaiian Airlines Logo
3:28 pm - 12:03 amMCI-ONT
10h 35m1 stop
Hawaiian Airlines Logo
7:10 am - 4:22 pmONT-MCI
7h 12m1 stop
$331Hawaiian Airlines
Find Deal
Cum, Eki 10 - Sal, Eki 14
Southwest Logo
10:15 am - 3:35 pmSTL-ONT
7h 20m2 stops
Southwest Logo
3:50 pm - 12:15 amONT-STL
6h 25m1 stop
$373Southwest
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Çar, Eki 15 - Paz, Eki 19

Delta flights from Missouri to Ontario

Our best Delta deals on Missouri to Ontario flight tickets
Delta
Aug 21
MCI5:59 pmKansas City
7h 41m
1 stop
ONT11:40 pmOntario
Aug 30
ONT6:05 amOntario
5h 13m
1 stop
MCI1:18 pmKansas City
$297
Find similar
Delta
Nov 24
STL6:59 pmLambert-St Louis
6h 47m
1 stop
ONT11:46 pmOntario
Dec 2
ONT5:05 pmOntario
5h 32m
1 stop
STL12:37 amLambert-St Louis
$313
Find similar
Delta
Aug 15
SGF3:54 pmSpringfield-Branson
8h 26m
1 stop
ONT10:20 pmOntario
Aug 19
ONT7:05 amOntario
8h 48m
1 stop
SGF5:53 pmSpringfield-Branson
$319
Find similar

Frontier flights from Missouri to Ontario

Our best Frontier deals on Missouri to Ontario flight tickets
Frontier
Nov 4
STL7:52 pmLambert-St Louis
5h 58m
1 stop
ONT11:50 pmOntario
Nov 7
ONT12:59 amOntario
6h 08m
1 stop
STL9:07 amLambert-St Louis
$205
Find similar
Frontier
Oct 8
STL7:52 pmLambert-St Louis
5h 58m
1 stop
ONT11:50 pmOntario
Oct 21
ONT12:59 amOntario
6h 08m
1 stop
STL9:07 amLambert-St Louis
$206
Find similar
Frontier
Aug 6
STL7:29 pmLambert-St Louis
6h 21m
1 stop
ONT11:50 pmOntario
Aug 8
ONT12:59 amOntario
6h 12m
1 stop
STL9:11 amLambert-St Louis
$214
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated Ağustos 2, 2025.
Use the filters below to find and compare flights from Missouri to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Sal 11/4

7:52 pm-11:50 pm

1 stop5h 58m

Ontario

Cum 11/7

12:59 am-9:07 am

1 stop6h 08m

$205

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Çar 10/8

7:52 pm-11:50 pm

1 stop5h 58m

Ontario

Sal 10/21

12:59 am-9:07 am

1 stop6h 08m

$206

SpringfieldOntario

SGF - ONT

SGFONT

Springfield-Branson

Per 12/25

5:45 am-9:28 am

1 stop5h 43m

Ontario

Per 1/1

11:59 pm-8:31 am

1 stop6h 32m

$269

SpringfieldOntario

SGF - ONT

SGFONT

Springfield-Branson

Per 12/25

4:15 pm-9:42 pm

2 stops7h 27m

Ontario

Per 1/1

11:59 pm-9:37 am

1 stop7h 38m

$274

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Sal 12/9

7:00 am-3:12 pm

1 stop10h 12m

Ontario

Cmt 12/13

11:30 am-11:56 pm

1 stop10h 26m

$278

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Çar 9/17

8:45 am-2:40 pm

1 stop7h 55m

Ontario

Çar 9/24

12:35 pm-7:50 pm

1 stop5h 15m

$292

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Cum 8/22

4:55 pm-11:53 pm

1 stop8h 58m

Ontario

Pzt 8/25

3:04 pm-11:59 pm

1 stop6h 55m

$296

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Cum 10/17

5:57 pm-11:51 pm

1 stop7h 54m

Ontario

Cmt 10/25

1:31 pm-11:59 pm

1 stop8h 28m

$311

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Cum 10/10

3:28 pm-12:03 am

1 stop10h 35m

Ontario

Sal 10/14

7:10 am-4:22 pm

1 stop7h 12m

$331

St. LouisOntario

STL - ONT

STLONT

Lambert-St Louis

Çar 10/15

10:15 am-3:35 pm

2 stops7h 20m

Ontario

Paz 10/19

3:50 pm-12:15 am

1 stop6h 25m

$373

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Missouri to Ontario

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 month to fly to Ontario?

In general, February is the cheapest month to fly from Missouri to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $213. If you aren’t able to travel during the month of February, then book flights to Ontario from Missouri during August instead. Flights to Ontario in August, while not as cheap as those in February, still average around $326.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $291. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Missouri to Ontario for around $376.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Missouri to Ontario when you can find flight prices for as low as $361. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $442 on average. Flights to Ontario from Missouri in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $365 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Missouri for as low as $130 on momondo.

Can stopping save me money on Missouri to Ontario flights?

You could potentially save up to 75% on your flight if you consider stops on a Missouri to Ontario flight.

Cheap Missouri to Ontario flight deals and tips

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

Best Price Found

$99

Fastest flight time

5h 01m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Missouri in the past 72 hours is $99. The best round-trip flight deal from Missouri to Ontario found on momondo in the last 72 hours is $205.
The fastest flight from Missouri to Ontario takes 5h 01m
There are no direct flights from Missouri to Ontario. Popular non-direct routes for this connection are Springfield-Branson Airport - Ontario Airport, Kansas City Airport - Ontario Airport and Lambert-St Louis Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)
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  • When did momondo last update prices for flights from Missouri to Ontario Airport?

    Prices for flights from Missouri to Ontario Airport were last updated today.

  • How many operators does momondo search for flights from Missouri to Ontario Airport?

  • How old do you have to be to fly from Missouri to Ontario 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 Missouri to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario 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 Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to Ontario

Compare and see reviews for airlines that fly from Missouri to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $107Free CancellationRating
5.8
3,237 reviews
Search Frontier flights
DeltaPriceFrom $181Free CancellationRating
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $268Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
8,905 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Missouri to Ontario for you.

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

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

How can momondo help me find flights from Missouri to Ontario?

Once you have performed a search for Missouri to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Missouri to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

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