ONT - COS

$129 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 4/1. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$177
Overall average: $313
Southwest
Tue 2/24Tue 3/3
ONT - COS • 1 stop
Cheapest one-way
$129
Typical prices: $109-$207
Delta
Wed 4/1
ONT - COS • 1 stop
Top airlines
Southwest
Cheapest • from $177 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 28% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Colorado Springs!
Flight Deals
Booking Insights
Flight 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, Feb 24 - Tue, Mar 3
Southwest Logo
3:15 pm - 10:35 pm
ONT
-
COS
6h 20m
1 stop
Southwest Logo
3:10 pm - 8:45 pm
COS
-
ONT
6h 35m
1 stop
$177Southwest
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
6:00 am - 4:00 pm
ONT
-
COS
9h 00m
1 stop
American Airlines Logo
6:00 am - 4:22 pm
COS
-
ONT
11h 22m
2 stops
$217American Airlines
Wed, Apr 1 - Sat, Apr 11
Delta Logo
6:00 am - 11:24 am
ONT
-
COS
4h 24m
1 stop
Delta Logo
8:15 am - 12:23 pm
COS
-
ONT
5h 08m
1 stop
$257Delta
Sat, Apr 18 - Mon, Apr 20
United Airlines Logo
6:00 am - 2:30 pm
ONT
-
COS
7h 30m
2 stops
United Airlines Logo
3:26 pm - 8:36 pm
COS
-
ONT
6h 10m
1 stop
$262United Airlines
Fri, Feb 27 - Mon, Mar 2
Southwest Logo
7:15 pm - 12:10 am
ONT
-
COS
3h 55m
1 stop
Southwest Logo
5:10 am - 9:05 am
COS
-
ONT
4h 55m
1 stop
$285Southwest
Thu, Apr 2 - Sat, Apr 11
Delta Logo
6:00 am - 11:24 am
ONT
-
COS
4h 24m
1 stop
Delta Logo
8:15 am - 12:23 pm
COS
-
ONT
5h 08m
1 stop
$296Delta
Sat, Apr 18 - Mon, Apr 20
United Airlines Logo
6:00 am - 2:30 pm
ONT
-
COS
7h 30m
2 stops
United Airlines Logo
1:33 pm - 10:45 pm
COS
-
ONT
10h 12m
2 stops
$302United Airlines
Fri, Feb 27 - Mon, Mar 2
Southwest Logo
3:40 pm - 11:20 pm
ONT
-
COS
6h 40m
2 stops
Southwest Logo
12:00 pm - 3:10 pm
COS
-
ONT
4h 10m
1 stop
$303Southwest
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
12:18 pm - 10:10 pm
ONT
-
COS
8h 52m
2 stops
American Airlines Logo
6:00 am - 4:22 pm
COS
-
ONT
11h 22m
2 stops
$310American Airlines
Wed, Apr 1 - Sun, Apr 12
Delta Logo
6:00 am - 11:24 am
ONT
-
COS
4h 24m
1 stop
Delta Logo
8:15 am - 12:23 pm
COS
-
ONT
5h 08m
1 stop
$322Delta
Booking Insights

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 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 November, where tickets cost $262 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $676 and $465 respectively.

Good to know

Low seasonJanuary
Cheapest flight$129
Best time to beat the crowds but there is an average 84% 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 $129 for a one-way ticket and $177 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, and Star Alliance 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 $357 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 $272 and an overall rating of 7.9.

  • 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 4273 reviews
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

8.0 ExcellentJoseph, Jan 2026
LGB - PHX
Read more Southwest reviews

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

We got exit row seats both flights. Everything was running on time

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

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

Information on your arrival and departure airports