ONT - COS

$137 Find Cheap Flights from Ontario to Colorado Springs

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Colorado Springs departing on 7/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Colorado Springs

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Colorado Springs, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Colorado Springs, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Ontario to Colorado Springs (ONT-COS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Colorado Springs that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Colorado Springs

Tue, Nov 4 - Tue, Nov 11
Delta Logo
5:05 pm - 10:29 pmONT-COS
4h 24m1 stop
Delta Logo
5:55 pm - 11:46 pmCOS-ONT
6h 51m1 stop
$217Delta
Find Deal
Tue, Nov 4 - Mon, Nov 10
Southwest Logo
8:30 am - 4:35 pmONT-COS
7h 05m2 stops
Southwest Logo
4:50 pm - 7:40 pmCOS-ONT
3h 50m1 stop
$222Southwest
Find Deal
Tue, Nov 4 - Mon, Nov 10
Southwest Logo
8:30 am - 4:35 pmONT-COS
7h 05m2 stops
Southwest Logo
6:00 am - 12:25 pmCOS-ONT
7h 25m2 stops
$227Southwest
Find Deal
Mon, Nov 3 - Tue, Nov 11
Delta Logo
5:05 pm - 10:29 pmONT-COS
4h 24m1 stop
Delta Logo
5:55 pm - 11:46 pmCOS-ONT
6h 51m1 stop
$234Delta
Find Deal
Sun, Aug 17 - Wed, Aug 20
Southwest Logo
4:20 pm - 11:20 pmONT-COS
6h 00m1 stop
Southwest Logo
5:50 pm - 9:00 pmCOS-ONT
4h 10m1 stop
$245Southwest
Find Deal
Wed, Aug 13 - Sun, Aug 17
Delta Logo
4:50 pm - 10:18 pmONT-COS
4h 28m1 stop
Delta Logo
5:55 pm - 11:40 pmCOS-ONT
6h 45m1 stop
$250Delta
Find Deal
Sat, Aug 2 - Tue, Aug 5
American Airlines Logo
12:55 pm - 11:52 pmONT-COS
9h 57m2 stops
American Airlines Logo
5:00 am - 12:00 pmCOS-ONT
8h 00m2 stops
$255American Airlines
Find Deal
Fri, Jul 18 - Mon, Jul 21
United Airlines Logo
5:05 am - 1:14 pmONT-COS
7h 09m1 stop
United Airlines Logo
5:20 pm - 8:54 pmCOS-ONT
4h 34m1 stop
$273United Airlines
Find Deal
Thu, Oct 16 - Wed, Oct 22
United Airlines Logo
6:37 pm - 11:52 pmONT-COS
4h 15m1 stop
United Airlines Logo
3:40 pm - 8:24 pmCOS-ONT
5h 44m1 stop
$287United Airlines
Find Deal
Thu, Jul 10 - Thu, Jul 17
American Airlines Logo
2:40 pm - 11:52 pmONT-COS
8h 12m1 stop
American Airlines Logo
5:00 am - 11:56 amCOS-ONT
7h 56m1 stop
$289American Airlines
Find Deal
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KAYAK's insights & trends for Ontario to Colorado Springs flights

Get data-powered insights and trends into flights from Ontario to Colorado Springs to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Colorado Springs?

The average price of all round-trip flights from Ontario to Colorado Springs clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ontario to Colorado Springs, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Colorado Springs, Saturday is the cheapest day to fly and Thursday is the most expensive.

What is the cheapest month to fly from Ontario to Colorado Springs?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Colorado Springs, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Colorado Springs is April, where tickets cost $312 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $422 and $420 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Colorado Springs, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Colorado Springs, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$137
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Ontario to Colorado Springs

When to book flights from Ontario to Colorado Springs

Are your dates flexible? Find out the best times to travel from Ontario to Colorado Springs based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Colorado Springs

  • What is the cheapest flight from Ontario to Colorado Springs?

    In the last 3 days, the lowest price for a flight from Ontario to Colorado Springs was $137 for a one-way ticket and $217 for a round-trip.

  • Do I need a passport to fly between Ontario and Colorado Springs?

    No, a passport isn't needed to fly from Ontario to Colorado Springs. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Colorado Springs?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Colorado Springs?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Colorado Springs, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Colorado Springs, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Colorado Springs are Southwest and Delta. With an average price for the route of $366 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $331 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Colorado Springs?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Colorado Springs.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Colorado Springs?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Colorado Springs from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Colorado Springs?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Colorado Springs with an airline and back to Ontario with another airline. Booking your flights between Ontario and COS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Colorado Springs?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Colorado Springs from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Ontario to Colorado Springs

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Colorado Springs. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Colorado Springs? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4278 reviews
8.0Comfort
8.6Crew
8.2Boarding
7.6Entertainment
7.1Food
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

WiFi on the flight was not working. Thus, entertainment options were limited.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

Everything you need to know for your flight from Ontario to Colorado Springs

Information on your arrival and departure airports

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