$38 Find Cheap Flights from Colorado to the United States

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Low seasonJanuary
High seasonDecember
Cheapest flight$38
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 17% 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 DeltaDEN-SEAJun 2025
If you are on the left side of the plane you should spot Mt. Rainer on your way into Seattle.
JesseFlew with Air CanadaDEN-INDMay 2025
takes times in security check, so come early
Verified travelerFlew with Alaska AirlinesDEN-SEAOct 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 SouthwestDEN-ORDOct 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 AirwaysDEN-LAXSep 2024
You don’t have to arrive two hours early since it is a domestic flight
JasonFlew with United AirlinesDEN-IADNov 2024
DIA is a large airport. Get there early.
kristenFlew with United AirlinesDEN-MCOJul 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 AirlinesDEN-PSCAug 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 AirlinesASE-DENJul 2024
weather can cause delays, and pack light if you chose to carry-on
Mike & DebbieFlew with SouthwestDEN-SDFAug 2024
Denver is a huge airport. Be prepared to walk plenty.
RogerFlew with United AirlinesDEN-SAFJun 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 AirlinesDEN-INDMar 2024
Eat before you get on the plane. Arrive at the gate early if you have carry-on luggage.
Verified travelerFlew with Air CanadaDEN-COSMar 2024
Make sure if you need a wheelchair you have plenty of time to between connecting flights.
Verified travelerFlew with Air CanadaCOS-DENMar 2024
Make sure to have snacks and drinks with you if you need them.
BindulFlew with United AirlinesDEN-IADFeb 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 AirlinesDEN-MSOFeb 2024
Big comfortable chairs that you can sleep on the B concourse.
BrianFlew with United AirlinesDEN-ORDJan 2024
Big airport. Make sure you have enough time between flights for rest, eating, etc…
RalphFlew with SouthwestDEN-PSPFeb 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 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 Austin Bergstrom Airport (AUS), with an average flight price of $136.

  • 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 $342. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $515 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 $264 on average. Morning departures are around 48% 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 $631.

  • 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 Los Angeles, at $34 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 $197.

  • 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 June, when tickets cost $284 (return) on average. On the other hand, the most expensive months are November and September, when the average cost of round-trip tickets is $439 and $377 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. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

  • 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 1349 miles. The shortest route is Denver (DEN) to Salt Lake City (SLC) with an average flight time of 1h 30m.

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

    Based on KAYAK flight searches, the most popular destination is New York (11% of total searches to the United States). The next most popular destinations are Las Vegas (6%) and Chicago (6%). Searches for flights to Seattle (4%), to San Francisco (4%) and to Los Angeles (4%) are also popular.

Reviews of the top 5 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.
9.0
Denver Air ConnectionOverall score based on 11 reviews
9.0Boarding
9.2Comfort
9.8Crew
8.7Entertainment
8.7Food
Airline reviews

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

8.0 ExcellentR, Jun 2024DEN - CVN
Read more Denver Air Connection reviews

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 Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

It was okay. The plane was delayed from earlier in the day, but they kept updating the departure time, sometimes later, sometimes earlier. That was stressful. Once we finally got on and took off, it was fine. I was supposed to have a connection in Chicago to Los Angeles, and the time for so late I was rebooked to arrive in LA 3 hours late. The departure time to Chicago later became early enough to have taken my original connection and arrive earlier but that wasn't an option.

It was one and half hour late... Not sure if any other experience matters.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

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.

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

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

We had a wonderful flight due to the care of our experienced pilot and copilot and the magnificent air views from our comfortable seats. What excitement to be in such a small plane with such magnificent around us.

Multiple time changes, then we left earlier than we were told.

Communication could be better but the staff and crew were over the top friendly and helpful, The flight itself was smooth.

flight was cancelled literally at 10pm the night before an early morning flight with hardly any time to reschedule. Will never book with kayak again.

My flight was cancelled 12 hours before takeoff. I was not able to reschedule another flight to make connections and had to cancel the entire trip. The ticket that was supposed to replace the cancelled flight had no boarding pass and I was unable to get one at the airport so I was denied access to the rescheduled flight. I was refunded but I missed my daughter's birthday.

I had a family emergency and couldn’t make the flight, and they wouldn’t let me cancel/refund it (a *month* ahead of time), were especially difficult with me on the phone, and wouldn’t let me even so much as reschedule the flight or get credit.

Flight was cancelled, communication was poor and should have canceled flight much earlier.

Flight was cancelled twice. Moved four more times. Probably the least timely and poorly run airline I have ever experienced in my life. I have traveled hundreds of times to dozens of countries and this one takes the cake.

Excellent crew, good flight. Flight was delayed about 1 1/2 hours though.

Pros: "The ground crew and flight crew were great."
Cons: "Would have appreciated easier steps (lower risers) for boarding. Arthritic knee makes it hard for me to manage the high risers between steps. Also having armrests would have made the flight more comfortable."

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

Very bad! No good service delayed my second connection flight

Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.

2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Book cheap flights from Colorado to the United States

Recent round-trip flight deals

10/11Sat
nonstopFrontier
2h 30mDEN-LAX
10/18Sat
nonstopFrontier
2h 34mLAX-DEN
$67
9/6Sat
nonstopFrontier
2h 34mDEN-LAX
9/7Sun
nonstopFrontier
2h 33mLAX-DEN
$73
8/16Sat
nonstopAmerican Airlines
1h 59mDEN-DFW
8/18Mon
nonstopAmerican Airlines
1h 58mDFW-DEN
$148
8/28Thu
nonstopSouthwest
2h 45mDEN-SFO
9/1Mon
nonstopSouthwest
2h 25mSFO-DEN
$157
8/16Sat
1 stopSouthwest
6h 50mDEN-SFO
8/23Sat
nonstopSouthwest
2h 25mSFO-DEN
$167
9/25Thu
1 stopAlaska Airlines
12h 49mDEN-SFO
9/29Mon
1 stopAlaska Airlines
14h 51mSFO-DEN
$176
11/18Tue
nonstopJetBlue
3h 39mDEN-JFK
11/19Wed
nonstopJetBlue
4h 34mJFK-DEN
$191
8/27Wed
nonstopJetBlue
3h 46mDEN-JFK
9/3Wed
nonstopJetBlue
4h 30mJFK-DEN
$197
9/9Tue
1 stopAmerican Airlines
6h 31mDEN-JFK
9/13Sat
1 stopAmerican Airlines
7h 03mJFK-DEN
$217
9/19Fri
1 stopAlaska Airlines
9h 43mDEN-BOS
9/22Mon
1 stopAlaska Airlines
19h 15mBOS-DEN
$246

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Recent one-way flight deals

10/14Tue
nonstopFrontier
2h 08mDEN-DFW
$38
9/3Wed
nonstopFrontier
2h 32mDEN-LAX
$46
11/12Wed
nonstopAmerican Airlines
2h 01mDEN-DFW
$68
9/30Tue
nonstopUnited Airlines
2h 00mDEN-LAS
$69
10/15Wed
nonstopAmerican Airlines
2h 12mDEN-DFW
$69
9/11Thu
nonstopAlaska Airlines
3h 01mDEN-SEA
$72
10/15Wed
nonstopUnited Airlines
2h 42mDEN-SFO
$79
11/17Mon
nonstopSouthwest
2h 00mDEN-LAS
$79
9/12Fri
nonstopSouthwest
2h 30mDEN-ORD
$83
8/13Wed
1 stopAlaska Airlines
5h 33mDEN-SFO
$88

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Last minute flights from Colorado to the United States

Last minute flight, train and bus deals

7/19Sat
nonstopFrontier
2h 02mDEN-LAS
8/16Sat
nonstopFrontier
2h 12mLAS-DEN
$102
7/17Thu
nonstopFrontier
2h 05mDEN-DFW
7/19Sat
nonstopFrontier
2h 24mDFW-DEN
$118
7/18Fri
nonstopFrontier
2h 05mDEN-LAS
8/16Sat
nonstopFrontier
2h 12mLAS-DEN
$119
7/19Sat
nonstopDelta
3h 59mDEN-JFK
7/28Mon
nonstopDelta
4h 54mJFK-DEN
$292
7/18Fri
multi-stopDelta
8h 15mDEN-JFK
7/28Mon
nonstopDelta
4h 54mJFK-DEN
$332
7/15Tue
nonstopJetBlue
3h 56mDEN-BOS
7/29Tue
nonstopJetBlue
4h 28mBOS-DEN
$335
7/19Sat
nonstopJetBlue
3h 56mDEN-BOS
7/26Sat
multi-stopJetBlue
7h 10mBOS-DEN
$352
7/18Fri
multi-stopAmerican Airlines
7h 24mDEN-BOS
7/22Tue
multi-stopAmerican Airlines
8h 47mBOS-DEN
$397
7/16Wed
multi-stopSouthwest
7h 35mDEN-BOS
7/28Mon
multi-stopSouthwest
6h 45mBOS-DEN
$420
7/18Fri
multi-stopSouthwest
8h 15mDEN-BOS
7/22Tue
multi-stopSouthwest
7h 50mBOS-DEN
$427

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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.

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