$36 Find Cheap Flights from Colorado to the United States

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Low seasonJanuary
Cheapest flight$36
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Denver to Dallas/Fort Worth Airport

Flights from Colorado to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Colorado to the United States 
Verified travelerFlew with Delta
DEN
-
SEA
Jun 2025
If you are on the left side of the plane you should spot Mt. Rainer on your way into Seattle.
JesseFlew with Air Canada
DEN
-
IND
May 2025
takes times in security check, so come early
Verified travelerFlew with Alaska Airlines
DEN
-
SEA
Oct 2024
Go early, it’s a big airport. There are two TSA screening areas, one might be more crowded than the other. From checking it to the gate give yourself at least 20-30 minutes to get there.
AdamFlew with Southwest
DEN
-
ORD
Oct 2024
Arriving T5 at ORD on Southwest is often a LONG walk, with no moving walkways going out, to baggage claim / pickup.
Verified travelerFlew with Qantas Airways
DEN
-
LAX
Sep 2024
You don’t have to arrive two hours early since it is a domestic flight
JasonFlew with United Airlines
DEN
-
IAD
Nov 2024
DIA is a large airport. Get there early.
kristenFlew with United Airlines
DEN
-
MCO
Jul 2024
allow plenty of time for your connection, if you're connecting somewhere, bc. its a very LARGE airport and your connection is likely a long trek....
F.Flew with United Airlines
DEN
-
PSC
Aug 2024
Check airline delay flight rate and choose another airline if you have important commitments to avoid frustration and missing important meetings.
kristenFlew with United Airlines
ASE
-
DEN
Jul 2024
weather can cause delays, and pack light if you chose to carry-on
Mike & DebbieFlew with Southwest
DEN
-
SDF
Aug 2024
Denver is a huge airport. Be prepared to walk plenty.
RogerFlew with United Airlines
DEN
-
SAF
Jun 2024
Also delayed. SAF road under ongoing construction for next several years. Car rental pickup is a disastrous 4 wheel drive off toad experience. Maybe flying ABX is better and then drive up to Santa Fe
MichaelFlew with United Airlines
DEN
-
IND
Mar 2024
Eat before you get on the plane. Arrive at the gate early if you have carry-on luggage.
Verified travelerFlew with Air Canada
DEN
-
COS
Mar 2024
Make sure if you need a wheelchair you have plenty of time to between connecting flights.
Verified travelerFlew with Air Canada
COS
-
DEN
Mar 2024
Make sure to have snacks and drinks with you if you need them.
BindulFlew with United Airlines
DEN
-
IAD
Feb 2024
There are multiple flights between DEN and IAD everyday, including some wide bodies. Try and get on one of the wide bodies whenever possible.
RebeccaFlew with United Airlines
DEN
-
MSO
Feb 2024
Big comfortable chairs that you can sleep on the B concourse.
BrianFlew with United Airlines
DEN
-
ORD
Jan 2024
Big airport. Make sure you have enough time between flights for rest, eating, etc…
RalphFlew with Southwest
DEN
-
PSP
Feb 2024
If you really want a better seat make sure you upgrade.

FAQs for booking flights from Colorado to the United States

  • How does KAYAK find such low prices on flights from Colorado to the United States?

    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 Colorado to the United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado to the United States 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 Colorado to the United States?

    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 from Colorado to the United States with an airline and back with another airline.

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

    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 from Colorado to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to the United States?

    Colorado and United States are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (5,822 flights per week), Southwest (2,821 flights per week), and Air Canada (2,157 flights per week).

  • How many airports are there in the United States?

    There are 586 airports in the United States. The busiest airport is Hartsfield-Jackson Atlanta Airport (ATL), with 7% of all flights arriving there.

  • Which is the cheapest airport to fly into in the United States?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United States is Minneapolis St Paul Airport (MSP), with an average flight price of $152.

  • What is the cheapest day to fly to the United States?

    Based on KAYAK data, the cheapest day to fly to the United States is Thursday where round-trip tickets can be as cheap as $335. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $496 on average.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally in the evening, when round-trip flights cost $267 on average. Morning departures are around 39% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $592.

  • What is the cheapest flight to the United States?

    The cheapest ticket to the United States from Colorado found in the last 72 hours was to Las Vegas, at $73 round-trip. The most popular route is Aspen (ASE) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $178.

  • What is the cheapest month to fly from Colorado to the United States?

    The cheapest month for flights from Colorado to the United States is December, when tickets cost $239 (return) on average. On the other hand, the most expensive months are February and November, when the average cost of round-trip tickets is $538 and $428 respectively.

  • How far in advance should I book a flight from Colorado to the United States?

    To get a below average price on the flight from Colorado to the United States, you should book around 3 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

  • How many cities have direct flights to the United States?

    From Colorado, there are direct flights to the United States from 13 cities. The city with the most direct flights is Denver, with 14,932 direct flights each week.

  • How many direct flights to the United States are there each day?

    There are around 2,591 direct flights from within Colorado to the United States every day. Most flights (43%) depart in the morning.

  • How many direct flights to the United States are there each week?

    Each week there are around 18,133 direct flights from within Colorado to the United States. The most common day for departures is Sunday, with 19% of flights taking off on this day.

  • How long is the flight to the United States?

    An average nonstop flight from Colorado to the United States takes 3h 11m, covering a distance of 1336 miles. The shortest route is Denver (DEN) to Kansas City (MCI) with an average flight time of 1h 36m.

  • How many long-haul flights are there to the United States each week?

    Each week there are around 52 long-haul flights (6-12 hour flight duration), 217 medium-haul (3-6 hour flight duration) and 13,462 short-haul (up to 3 hour flight duration) flights to the United States. The most long-haul flights depart from Denver.

  • What are the most popular destinations in the United States?

    Based on KAYAK flight searches, the most popular destination is New York (8% of total searches to the United States). The next most popular destinations are Las Vegas (7%) and Miami (5%). Searches for flights to Washington, D.C. (5%), to Chicago (4%) and to Dallas (4%) are also popular.

Reviews of the top 4 airlines serving from Colorado to the United States

 
Need help choosing which airline to fly with from Colorado to the United States? 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.
8.7
Denver Air ConnectionOverall score based on 20 reviews
9.4Crew
8.1Entertainment
8.7Boarding
8.4Food
8.9Comfort
Airline reviews

Denver air is great flight times and connections a little rough

8.0 ExcellentJane, Nov 2025
ORD - DBQ
Read more Denver Air Connection reviews

Denver air is great flight times and connections a little rough

Communication with delays. Failed to make a connection I ng flight in Chicago.

Excellent, from check Iin to arrival. I was apprehensive about flying a small plane between Ironwood and Chicago, but the flight and service was great. I noticed, after boarding , that my cell phone had little battery left. The flight attendant kindly lent me a charging device to keep me connected with my contact in Chicago upon landing. I will always remember that kindness.

Great snacks and friendly people for check in at Pierre SD!

The connecting flight came in 45 min late but everything else was great

Absolutely easy travels and no cost cutting by the airline.

Their snacks and hospitality was amazing. They offered full sized snacks. Im talking full sized water bottles, full sized snickers bars, gold fish, full sized canned sodas, what ever you wanted they took care of it for FREE. The crew was really nice and hospitable. I was honestly shocked

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

Flight was on time. Wi-fi was a little spotty/slow. Boarding and exit were efficient.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

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.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

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

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

Not clean and was told I would get a great seat and it was not great at all

Everything you need to know for your flight to the United States

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.