$23 Cheap flights to Boulder County

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Top places to visit in Boulder County

A street corner with a traffic light, a street sign reading "Pearl St Mall 1900", and a brick building with multiple windows.
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Boulder

Boulder
A snow-capped mountain range with a visible moon in the sky.
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Longmont

Longmont
A historic stone building with a reflection in calm water, surrounded by a fence and trees.
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FlightsFlights

Louisville

Louisville

Cheap flights to Boulder County from $23 One Way, $46 Round Trip

$46 return flights and $23 one-way flights to Boulder County were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 23 - Sat, Jan 30
LAX
Los Angeles
DEN
Denver
$46 Roundtrip, just found
$46
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jan 23 from Los Angeles to Denver, returning Sat, Jan 30, priced at $46 just found
Wed, Mar 3 - Sat, Mar 6
DFW
Dallas
DEN
Denver
$61 Roundtrip, found 3 hours ago
$61
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Wed, Mar 3 from Dallas to Denver, returning Sat, Mar 6, priced at $61 found 3 hours ago
Wed, Dec 2 - Wed, Dec 9
ORD
Chicago
DEN
Denver
$109 Roundtrip, just found
$109
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Dec 2 from Chicago to Denver, returning Wed, Dec 9, priced at $109 just found
Sat, Dec 12 - Thu, Dec 17
IAH
Houston
DEN
Denver
$141 Roundtrip, found 5 days ago
$141
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Dec 12 from Houston to Denver, returning Thu, Dec 17, priced at $141 found 5 days ago
Thu, Feb 18 - Fri, Feb 26
DAL
Dallas
DEN
Denver
$157 Roundtrip, found 1 hour ago
$157
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Thu, Feb 18 from Dallas to Denver, returning Fri, Feb 26, priced at $157 found 1 hour ago
Wed, Mar 3 - Sat, Mar 6
DFW
Dallas
DEN
Denver
$157 Roundtrip, found 3 hours ago
$157
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Mar 3 from Dallas to Denver, returning Sat, Mar 6, priced at $157 found 3 hours ago

Deals For This Weekend's Flights

OriginDestinationTravel DatesFlights From*
MIADenverNovember 13 to November 15$238
MSPDenverNovember 14 to November 14$248
PHXDenverNovember 14 to November 15$260
PHLDenverNovember 14 to November 26$289
ATLDenverNovember 14 to November 17$290
LAXDenverNovember 15 to November 17$295
ORDDenverNovember 14 to November 16$338
DFWDenverNovember 13 to November 15$352
LGADenverNovember 14 to November 16$367
BOSDenverNovember 13 to November 16$485
*Prices include taxes and fees

Find The Perfect Hotel For After Your Flight

Score Epic Boulder County Accommodation Deals

Hotel Boulderado

Hotel Boulderado

4 out of 5
2115 13th St Boulder CO
Fully refundableReserve now, pay when you stay
$125 nightly
The price is $144 total per night from Dec 6 to Dec 7
$144 total
Dec 6 - Dec 7
Total with taxes and fees
Book a stay at this luxury hotel in Boulder. Enjoy free WiFi, 2 restaurants, and breakfast (surcharge). Our guests praise the restaurant and the bar in our reviews. ...
9.6/10 Exceptional! (1,854 reviews)
"Loved. So special."

Reviewed on Nov 6, 2026

Opens in a new windowHotel Boulderado
Limelight Boulder

Limelight Boulder

4 out of 5
1295 University Ave Boulder CO
Fully refundableReserve now, pay when you stay
$169 nightly
The price is $194 total per night from Nov 29 to Nov 30
$194 total
Nov 29 - Nov 30
Total with taxes and fees
Book a stay at this family-friendly hotel in Boulder. Enjoy free WiFi, 2 bars/lounges, and a rooftop terrace. Popular attractions Pearl Street Mall and Folsom ...
Opens in a new windowLimelight Boulder
Comfort Inn & Suites Boulder

Comfort Inn & Suites Boulder

3 out of 5
4777 North Broadway Boulder CO
Fully refundable
$91 nightly
The price is $105 total per night from Nov 29 to Nov 30
$105 total
Nov 29 - Nov 30
Total with taxes and fees
Book a stay at this business-friendly hotel in Boulder. Enjoy free breakfast, free WiFi, and an outdoor pool. Our guests praise the breakfast and the helpful ...
8.6/10 Excellent! (1,003 reviews)
"Our room was very clean and spacious. The staff was extra friendly and welcoming. Breakfast was good. The waffle maker was out of order but the biscuit and gravy made up for it. 😁"

Reviewed on Nov 6, 2026

Opens in a new windowComfort Inn & Suites Boulder
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Courtyard by Marriott Boulder

Courtyard by Marriott Boulder

3 out of 5
4710 Pearl East Cir Boulder CO
Fully refundableReserve now, pay when you stay
$125 nightly
The price is $144 total per night from Nov 15 to Nov 16
$144 total
Nov 15 - Nov 16
Total with taxes and fees
Book a stay at this business-friendly hotel in Boulder. Enjoy free WiFi, breakfast (surcharge), and a fitness center. Our guests praise the helpful staff and ...
9/10 Wonderful! (1,001 reviews)
"Clean, close to everything, coffee bar and alcohol in the evening."

Reviewed on Nov 6, 2026

Opens in a new windowCourtyard by Marriott Boulder
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Need a Car For After Your Flight?

Midsize

Toyota Corolla
  • 5 people
  • Unlimited mileage
AURORA, USA
Toyota Corolla

$10

$67 total
found 17 hours ago
Midsize Toyota Corolla

Compact

Hyundai Accent
  • 5 people
  • Unlimited mileage
AURORA, USA
Hyundai Accent

$10

$66 total
found 17 hours ago
Compact Hyundai Accent

Standard

Volkswagen Passat
  • 5 people
  • Unlimited mileage
Aurora, Colorado, USA
Volkswagen Passat

$11

$69 total
found 17 hours ago
Standard Volkswagen Passat

Special

Dealer's Choice
  • 5 people
  • Unlimited mileage
Aurora, Colorado, USA
Dealer's Choice

$11

$69 total
found 17 hours ago
Special Dealer's Choice
Lowest prices found within the past 17 hours. Prices and availability subject to change. Additional terms may apply.

Boulder County

If you are looking for affordable flights to Boulder County, look no further. Orbitz offers discounted rates to many destinations.

Bargain flights to Boulder County now available

As you review your budget and travel plans, consider the low fares Orbitz offers on Boulder County flights. With Orbitz, booking flights to Boulder County is easy and the lowest prices are guaranteed.

Easy self-help service offered

Orbitz offers cutting edge mobile tools that allow you to review and make bookings from your Android or iPhone mobile device with a simple application. You can easily and conveniently update your information or book your trip using this service. You are also able to obtain information on affordable hotel packages and receive frequent flight updates. You will receive confirmation of bookings or reservations made using the mobile service on the same day of the request. Change details or receive updates on your Boulder County flights by visiting the Orbitz site or mobile application.

Orbitz looks after you

Orbitz ensures that you are kept informed with up-to-date flight information, providing feedback to up to six contact numbers to ensure that everyone receives the feedback. In addition to providing the discounted deals on Boulder County flights, Orbitz is also able to structure a package based on your needs for activities, car hire and accommodations.

Traveler profile updates

After booking your Boulder County flights, you may access your account profile on the Orbitz site and update your frequent flyer or loyalty membership details. This information will remain on the system and will be available for you to access when you make any future bookings with Orbitz.

Frequently asked questions

Which airlines fly to Boulder County?
With 12 airlines waiting to spirit you away to Boulder County, finding a suitable flight will be a breeze. Book your fare with one of these top carriers that offer services to Denver Intl. Airport (DEN):

  • United Airlines - 269 flights to Boulder County per month
  • Southwest Airlines - 88 flights to Boulder County per month
  • Air Canada - 83 flights to Boulder County per month

How much is a flight to Boulder County?
If you're searching for flights back and forth, airfares ranged between $46 and $485 this past week. The lowest one-way ticket prices were $23, departing from Los Angeles (LAX).
How to book the cheapest flight to Boulder County?
With Orbitz, you'll find some of the most amazing flight deals around from a big range of airlines. But if you'd like to increase your chances of landing cheap flights to Boulder County, here are some suggestions we think will help:

  • Taking off from or arriving at other airports can sometimes be cheaper. Enter your preferred departure and arrival airports. Next, select the 'Nearby airports' function below to explore your options.
  • Also, click on the 'Show flexible dates' link to bring up the prices for days around your chosen departure. It's possible to score cheaper flight deals if you're flexible with your schedule.
  • To filter your results, hit 'Show options.' You can search based on airlines, seating class, nonstop flights and refundable flights. You can also choose your preferred flight times under 'Sort & Filter' to the left.
  • The early bird catches the best deals, so purchase your seats once you've settled on your travel dates. The most affordable airfares sell like hotcakes and prices normally climb as the departure date nears.
  • Bundle your flights, hotels and car rental into an impressive package deal. Save your money for things that really excite you, like discovering every corner of Boulder County.
  • Don't travel during peak seasons if possible. By avoiding summer and school vacations, you can make superb savings on your airfares.

What is the best time to book a flight to Boulder County?
Book your flights to Boulder County in January. This is the perfect time of the year for low prices, followed by February and August. Find cheap flights and make your dream journey a reality with Orbitz.
What day of the week is the cheapest to book a flight to Boulder County?
Get a great flight deal by booking on a Tuesday, Wednesday or Saturday. Typically, these are the best days to pick up cheap fares to Boulder County.
What is the cheapest day of the week to fly to Boulder County?
You can land cheap flights to Boulder County by flying out on a Monday, according to Orbitz data from 2020. Tuesday is also more affordable, while Saturday has the most expensive ticket prices. Whether you prefer to save cash or take off on any day that's convenient, you'll always find a terrific deal with Orbitz.
What is the cheapest month to fly to Boulder County?
To score cheap flights to Boulder County, you should depart in August. If getting a great deal on your ticket is your number one priority, Orbitz data has found that this is generally an excellent month to travel. June is when airfares are the most expensive.
Which airlines allow free cancellation?
Plans change, and your ticket should be able to do the same. That's why Orbitz makes it a cinch to search for flights with no change fees and free cancellation. Just enter your departure and arrival destinations and then select "Filter by flexible change policies." How's that for fuss-free?
What do I need for the flight to Boulder County?
Nothing's more fun than flying somewhere new, but it pays to be prepared. These top tips will help get your trip off to a smooth start:

  • Before you step foot on the plane, you'll need to show some form of government-issued ID, like a passport. You'll also need your boarding pass. If you're traveling with children, check with your airline about which documents they may need.
  • To keep you entertained on the short trip to Boulder County, download some new music or restock the audiobook library on your phone. Food can also be a good distraction while in the air, so maybe even bring some snacks.
  • It can get cool on the plane. If you'd prefer not to shiver your way through the flight, wear an extra layer of clothes.

How do I get cheap first-class/business deals to Boulder County?
There are ways of booking first or business-class fares to Boulder County that won't burn through your wallet. Pick up a seat at the front of the plane for less with these great tips:

  • Be flexible with your travel dates and hold out for huge sales on first or business-class airfares.
  • Many low-cost carriers nowadays have terrific business-class seating for a wallet-friendly price.
  • Bid for an upgrade in online auctions (if available) or upgrade your seat with points earned through loyalty programs.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.