Flights from Ontario International Airport to Colorado

Flight deals from Ontario International Airport to Colorado

Looking for cheap flights from Ontario International Airport to Colorado, or a last-minute trip? Find the cheapest prices on one-way and round-trip flights right here.

Denver.$55 per passenger.Departing Tue, Jan 21, returning Wed, Jan 29.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Ontario International on Tue, Jan 21, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Wed, Jan 29, arriving in Ontario International.Price includes taxes and charges.From $55, select.

Vail.$156 per passenger.Departing Thu, Jan 16, returning Sun, Jan 19.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Ontario International on Thu, Jan 16, arriving in Vail Eagle County.Inbound indirect flight with Frontier Airlines, departing from Vail Eagle County on Sun, Jan 19, arriving in Ontario International.Price includes taxes and charges.From $156, select.

Montrose.$335 per passenger.Departing Sun, Feb 16, returning Sun, Mar 2.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Sun, Feb 16, arriving in Montrose.Inbound indirect flight with Southwest Airlines, departing from Montrose on Sun, Mar 2, arriving in Ontario International.Price includes taxes and charges.From $335, select.

Colorado Springs.$363 per passenger.Departing Sat, Dec 21, returning Mon, Dec 23.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Ontario International on Sat, Dec 21, arriving in Colorado Springs Peterson Field.Inbound indirect flight with Southwest Airlines, departing from Colorado Springs Peterson Field on Mon, Dec 23, arriving in Ontario International.Price includes taxes and charges.From $363, select.

Durango.$365 per passenger.Departing Fri, Jan 10, returning Sun, Jan 12.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Ontario International on Fri, Jan 10, arriving in Durango La Plata.Inbound indirect flight with American Airlines, departing from Durango La Plata on Sun, Jan 12, arriving in Ontario International.Price includes taxes and charges.From $365, select.

Aspen.$375 per passenger.Departing Sun, Dec 8, returning Sat, Dec 14.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Ontario International on Sun, Dec 8, arriving in Aspen.Inbound indirect flight with American Airlines, departing from Aspen on Sat, Dec 14, arriving in Ontario International.Price includes taxes and charges.From $375, select.

Grand Junction.$378 per passenger.Departing Sat, Dec 21, returning Wed, Jan 1.Round-trip flight with American Airlines.Outbound indirect flight with American Airlines, departing from Ontario International on Sat, Dec 21, arriving in Grand Junction.Inbound indirect flight with American Airlines, departing from Grand Junction on Wed, Jan 1, arriving in Ontario International.Price includes taxes and charges.From $378, select.

Pueblo.$700 per passenger.Departing Mon, Dec 9, returning Sun, Dec 15.Round-trip flight with Alaska Airlines and Southern Airways Express.Outbound indirect flight with Alaska Airlines, departing from Ontario International on Mon, Dec 9, arriving in Pueblo.Inbound indirect flight with Southern Airways Express, departing from Pueblo on Sun, Dec 15, arriving in Ontario International.Price includes taxes and charges.From $700, select.

Flying from Ontario International Airport to Colorado

Arm yourself with these facts on the fly.

Cheapest flight found	$55, Denver
Cheapest month to fly	January
Average flight time	2 hrs, 18 mins
Average flights per week	52
Most popular airline	Southwest Airlines

How to find cheap flights from Ontario International Airport to Colorado

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Ontario International Airport to Colorado. Other savvy travelers recently found round-trip flights from $55 and one-way tickets from $25. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in February

The cheapest time to fly from Ontario International Airport to Colorado is currently February.

Fly on a Saturday

From our data, we can see that Saturday seems to be the cheapest time to fly from Ontario International Airport to Colorado.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Ontario International Airport to anywhere you choose in Colorado.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from Ontario International Airport to your chosen airport in Colorado go up or down so you can book when the time is just right.

Relax – these are fee-free plane tickets

With us, there are no added fees – the Ontario International Airport to Colorado flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from Ontario International Airport to Colorado?

Yes – direct flights currently operate from Ontario International Airport to Denver International Airport in Colorado.

What is the average price of a flight from Ontario International Airport to Colorado?

We looked at all of the upcoming round-trip flights from Ontario International Airport to Colorado we could find over the next 12 months. It looks like $55 is the best price. This is good, compared to the average Colorado ticket price of $346.

What is the cheapest month to fly from Ontario International Airport to Colorado?

The cheapest month to fly from Ontario International Airport to Grand Junction Airport is currently December.
The cheapest month to fly from Ontario International Airport to Durango La Plata Airport is currently January.
The cheapest month to fly from Ontario International Airport to Montrose Airport is currently February.
And the cheapest month to fly from Ontario International Airport to Pueblo Airport is usually December.

On which upcoming date is it cheapest to fly from Ontario International Airport to Colorado?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ontario International Airport to Colorado on Tuesday, January 21, 2025.

If I'm flying from Ontario International Airport, where in Colorado is cheapest to fly to?

If you're flying from Ontario International, the cheapest city in Colorado to fly into is Denver. The cheapest airport serving Denver at the moment is Denver International.