$28 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 $28 One Way, $56 Round Trip

$56 return flights and $28 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.

Tue, Dec 8 - Wed, Dec 9
MSP
Minneapolis
DEN
Denver
$56 Roundtrip, found 2 hours ago
$56
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Tue, Dec 8 from Minneapolis to Denver, returning Wed, Dec 9, priced at $56 found 2 hours ago
Sat, Oct 10 - Wed, Oct 14
LAX
Los Angeles
DEN
Denver
$61 Roundtrip, found 1 hour ago
$61
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Oct 10 from Los Angeles to Denver, returning Wed, Oct 14, priced at $61 found 1 hour ago
Sat, Oct 31 - Tue, Nov 3
DFW
Dallas
DEN
Denver
$61 Roundtrip, just found
$61
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 31 from Dallas to Denver, returning Tue, Nov 3, priced at $61 just found
Tue, Oct 27 - Wed, Oct 28
ORD
Chicago
DEN
Denver
$75 Roundtrip, found 12 hours ago
$75
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Tue, Oct 27 from Chicago to Denver, returning Wed, Oct 28, priced at $75 found 12 hours ago
Mon, Nov 23 - Tue, Dec 1
IAH
Houston
DEN
Denver
$88 Roundtrip, found 5 days ago
$88
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Mon, Nov 23 from Houston to Denver, returning Tue, Dec 1, priced at $88 found 5 days ago
Wed, Nov 4 - Sat, Nov 7
MSP
Minneapolis
DEN
Denver
$143 Roundtrip, found 4 hours ago
$143
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Nov 4 from Minneapolis to Denver, returning Sat, Nov 7, priced at $143 found 4 hours ago

Deals For This Weekend's Flights

OriginDestinationTravel DatesFlights From*
MIADenverSeptember 19 to September 22$241
PHXDenverSeptember 19 to September 21$258
LAXDenverSeptember 19 to September 23$271
DFWDenverSeptember 19 to September 23$299
MSPDenverSeptember 19 to September 20$300
ORDDenverSeptember 19 to September 26$312
TTNDenverSeptember 19 to September 25$384
LGADenverSeptember 19 to September 21$456
ATLDenverSeptember 18 to September 21$469
BOSDenverSeptember 19 to September 22$530
*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
$207 nightly
The price is $238 total per night from Sep 20 to Sep 21
$238 total
Sep 20 - Sep 21
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! (1,798 reviews)
"Historic Boulder at its best!"

Reviewed on Sep 14, 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
$339 nightly
The price is $389 total per night from Oct 4 to Oct 5
$389 total
Oct 4 - Oct 5
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 Media ...
Opens in a new windowLimelight Boulder
Hotel Longmont

Hotel Longmont

3 out of 5
508 3rd Ave Longmont CO
Fully refundable
$134 nightly
The price is $151 total per night from Sep 20 to Sep 21
$151 total
Sep 20 - Sep 21
Total with taxes and fees
Stay at this hotel in Longmont. Enjoy free WiFi, breakfast (surcharge), and parking (surcharge). Popular attractions Wibby Brewing and City of Longmont Callahan ...
Opens in a new windowHotel Longmont
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A-Lodge Boulder

A-Lodge Boulder

3 out of 5
91 Four Mile Canyon Drive Boulder CO
Fully refundableReserve now, pay when you stay
$128 nightly
The price is $134 total per night from Oct 11 to Oct 12
$134 total
Oct 11 - Oct 12
Total with taxes and fees
Stay at this lodge in Boulder. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff and the clean rooms in our reviews. Popular ...
Opens in a new windowA-Lodge 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?

Special

Choice of Supplier
  • 5 people
  • Unlimited mileage
COMMERCE CITY, USA
Choice of Supplier

$9

$88 total
found 1 day ago
Special Choice of Supplier

Midsize

Toyato Corolla
  • 5 people
  • Unlimited mileage
COMMERCE CITY, USA
Toyato Corolla

$10

$91 total
found 1 day ago
Midsize Toyato Corolla

Compact SUV

Kia Seltos
  • 5 people
  • Unlimited mileage
Commerce City, Colorado, USA
Kia Seltos

$11

$91 total
found 1 day ago
Compact SUV Kia Seltos

Fullsize Open Air All-Terrain

Jeep Rubicon Hard top
  • 5 people
  • Unlimited mileage
Commerce City, Colorado, USA
Jeep Rubicon Hard top

$16

$105 total
found 1 day ago
Fullsize Open Air All-Terrain Jeep Rubicon Hard top

Boulder County

Are you in the mood for a cruise? Shop Orbitz today for cheap cruises and flights to Boulder County. Our award-winning cruise site features exclusive offers, information for first-timers and top destinations and activities. Make discount domestic and international travel plans in an instant with cutting-edge mobile tools from Orbitz.

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Orbitz holds a “Best of the Web” Cruise Site Award from Forbes Magazine. You won’t find better deals anywhere on low cost cruises and low fare Boulder County flights. Our Customer Care and guaranteed low prices make Orbitz the team to beat in budget cruises and air ticket sales.

Exclusive Offers

Register for Orbitz email updates and our cruise experts will notify you of bargain tickets on cruises as they’re posted. Install our free mobile apps on your iPad, iPhone or Android for easy booking and mobile-only savings on flights to Boulder County. Visit www.Orbitz.com to learn more about these amazing benefits and our 110% Best Price Guarantee.

First-Timers

Are you and your family cruise newbies? Orbitz offers Cruising 101 and Cruise FAQ to answer any questions you may have. Book your cruise and air travel with Orbitz On the Go for greater savings on Boulder County flights.

Ports and Play

Be sure to check our cruise page for free shore excursions, onboard spending, balcony upgrades and other perks. Orbitz offers last-minute, luxury, weekend and summer cruises. You can even designate which port you want to sail from and pre-book on-shore activities. Get there on the cheap with discounts on flights to Boulder County and Boulder County flights. Get more bang for your travel buck at 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 $56 and $530 this past week. The lowest one-way ticket prices were $28, departing from Minneapolis (MSP).
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.