What airlines fly to Ontario?

American Airlines, United Airlines and Allegiant Air are the top three most popular airlines that fly to Ontario from Fort Smith according to our data. American Airlines is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Fort Smith Airport to Ontario Airport?

Prices for flights from Fort Smith Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from Fort Smith Airport to Ontario Airport?

As of December 2025, there is 1 operator available to choose from for flights from Fort Smith Airport to Ontario Airport.

How old do you have to be to fly from Fort Smith Airport 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 Fort Smith Airport to Ontario Airport.

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

The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$353 Cheap Flights from Fort Smith to Ontario in 2025/26

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10:16 am - 1:52 pm

FSM

ONT

5h 36m1 stop

2:49 pm - 10:27 pm

ONT

FSM

5h 38m1 stop

$721American Airlines

Wed, Dec 31 - Sat, Jan 3

10:16 am - 4:07 pm

FSM

ONT

7h 51m2 stops

2:49 pm - 10:27 pm

ONT

FSM

5h 38m1 stop

$726American Airlines

Wed, Dec 31 - Sat, Jan 3

10:16 am - 1:52 pm

FSM

ONT

5h 36m1 stop

11:59 pm - 9:46 am

ONT

FSM

7h 47m1 stop

$754American Airlines

Wed, Dec 31 - Fri, Jan 2

10:16 am - 4:07 pm

FSM

ONT

7h 51m2 stops

11:59 pm - 9:46 am

ONT

FSM

7h 47m1 stop

$759American Airlines

Wed, Dec 31 - Fri, Jan 2

6:00 am - 9:38 am

FSM

ONT

5h 38m1 stop

2:49 pm - 10:27 pm

ONT

FSM

5h 38m1 stop

$764American Airlines

Tue, Dec 30 - Sat, Jan 3

6:00 am - 9:38 am

FSM

ONT

5h 38m1 stop

2:49 pm - 10:27 pm

ONT

FSM

5h 38m1 stop

$776American Airlines

Mon, Dec 29 - Sat, Jan 3

6:00 am - 9:38 am

FSM

ONT

5h 38m1 stop

11:59 pm - 9:46 am

ONT

FSM

7h 47m1 stop

$797American Airlines

Tue, Dec 30 - Fri, Jan 2

10:16 am - 6:28 pm

FSM

ONT

10h 12m2 stops

6:15 am - 5:47 pm

ONT

FSM

9h 32m2 stops

$806American Airlines

Wed, Dec 31 - Sat, Jan 3

6:00 am - 9:38 am

FSM

ONT

5h 38m1 stop

11:59 pm - 9:46 am

ONT

FSM

7h 47m1 stop

$809American Airlines

Mon, Dec 29 - Fri, Jan 2

American Airlines flights from Fort Smith to Ontario

Our best American Airlines deals on Fort Smith to Ontario flight tickets

American Airlines

Dec 13

FSM6:28 pmFort Smith

6h 00m

1 stop

ONT10:28 pmOntario

Dec 27

ONT11:59 pmOntario

7h 47m

1 stop

FSM9:46 amFort Smith

$493

Find similar

American Airlines

Dec 13

FSM6:00 amFort Smith

5h 54m

1 stop

ONT9:54 amOntario

Dec 27

ONT11:59 pmOntario

7h 47m

1 stop

FSM9:46 amFort Smith

$510

Find similar

American Airlines

Dec 13

FSM6:00 amFort Smith

8h 00m

2 stops

ONT12:00 pmOntario

Dec 27

ONT11:59 pmOntario

7h 47m

1 stop

FSM9:46 amFort Smith

$532

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Wed 12/31

10:16 am-1:52 pm

1 stop5h 36m

Ontario

Sat 1/3

2:49 pm-10:27 pm

1 stop5h 38m

$721

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Wed 12/31

10:16 am-4:07 pm

2 stops7h 51m

Ontario

Sat 1/3

2:49 pm-10:27 pm

1 stop5h 38m

$726

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Wed 12/31

10:16 am-1:52 pm

1 stop5h 36m

Ontario

Fri 1/2

11:59 pm-9:46 am

1 stop7h 47m

$754

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Wed 12/31

10:16 am-4:07 pm

2 stops7h 51m

Ontario

Fri 1/2

11:59 pm-9:46 am

1 stop7h 47m

$759

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Tue 12/30

6:00 am-9:38 am

1 stop5h 38m

Ontario

Sat 1/3

2:49 pm-10:27 pm

1 stop5h 38m

$764

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Mon 12/29

6:00 am-9:38 am

1 stop5h 38m

Ontario

Sat 1/3

2:49 pm-10:27 pm

1 stop5h 38m

$776

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Tue 12/30

6:00 am-9:38 am

1 stop5h 38m

Ontario

Fri 1/2

11:59 pm-9:46 am

1 stop7h 47m

$797

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Wed 12/31

10:16 am-6:28 pm

2 stops10h 12m

Ontario

Sat 1/3

6:15 am-5:47 pm

2 stops9h 32m

$806

Fort SmithOntario

FSM - ONT

FSMONT

Fort Smith

Mon 12/29

6:00 am-9:38 am

1 stop5h 38m

Ontario

Fri 1/2

11:59 pm-9:46 am

1 stop7h 47m

$809

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Fort Smith 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

Prices

Airlines

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 Saturday when prices can be found for as low as $357. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Fort Smith to Ontario for around $784.

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 Fort Smith to Ontario when you can find flight prices for as low as $392. 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 $618 on average. Flights to Ontario from Fort Smith in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Fort Smith to Ontario

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

Estimated round-trip price

Cheap Fort Smith to Ontario (FSM to ONT) flight deals and tips

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

Fastest flight time	5h 54m
Direct flights	None

The fastest flight from Fort Smith to Ontario takes 5h 54m

There are no direct flights from Fort Smith to Ontario. There are no popular flight routes from Fort Smith to Ontario.

Search flight deals

How far is Fort Smith to Ontario by plane?
The distance between Fort Smith and Ontario is about 1319.7 mi. Flights usually cover this in 5h 54m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Fort Smith Airport to Ontario Airport?
Prices for flights from Fort Smith Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Fort Smith Airport to Ontario Airport?
As of December 2025, there is 1 operator available to choose from for flights from Fort Smith Airport to Ontario Airport.
How old do you have to be to fly from Fort Smith Airport 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 Fort Smith Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Fort Smith to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Fort Smith to Ontario is American Airlines (100% of total bookings).

Best airlines flying from Fort Smith to Ontario

Compare and see reviews for airlines that fly from Fort Smith to Ontario with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $369	Free Cancellation	Rating 7.2 11,050 reviews		Search American Airlines flights

Why use momondo?

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

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 Ontario from Fort Smith.

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

Yes. momondo enables you to select and highlight flights to Ontario from Fort Smith with this policy.

How can momondo help me find flights from Fort Smith to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Fort Smith.

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

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Fort Smith and alert you when they change.