Cheap Flights to Boulder County from $21 (2026/2027)

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Boulder

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Boulder

How Much Does it Cost To Fly To Boulder County?

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Sat, Feb 27 - Wed, Mar 3
DFW
Dallas-Fort Worth Intl.
DEN
Denver Intl.
$40 Roundtrip, found 1 hour ago
$40
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Feb 27 from Dallas-Fort Worth Intl. to Denver Intl., returning Wed, Mar 3, priced at $40 found 1 hour ago
Wed, Jan 13 - Sat, Jan 16
DFW
Dallas-Fort Worth Intl.
DEN
Denver Intl.
$54 Roundtrip, found 1 hour ago
$54
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Jan 13 from Dallas-Fort Worth Intl. to Denver Intl., returning Sat, Jan 16, priced at $54 found 1 hour ago
Wed, Nov 4 - Fri, Nov 6
DFW
Dallas-Fort Worth Intl.
DEN
Denver Intl.
$65 Roundtrip, found 15 hours ago
$65
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Nov 4 from Dallas-Fort Worth Intl. to Denver Intl., returning Fri, Nov 6, priced at $65 found 15 hours ago
Sat, Feb 20 - Tue, Feb 23
DFW
Dallas-Fort Worth Intl.
DEN
Denver Intl.
$66 Roundtrip, found 1 day ago
$66
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Feb 20 from Dallas-Fort Worth Intl. to Denver Intl., returning Tue, Feb 23, priced at $66 found 1 day ago
Wed, Dec 9 - Thu, Dec 10
LAX
Los Angeles Intl.
DEN
Denver Intl.
$68 Roundtrip, found 1 day ago
$68
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Dec 9 from Los Angeles Intl. to Denver Intl., returning Thu, Dec 10, priced at $68 found 1 day ago
Sun, Nov 15 - Wed, Nov 18
ORD
O'Hare Intl.
DEN
Denver Intl.
$70 Roundtrip, found 2 days ago
$70
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Nov 15 from O'Hare Intl. to Denver Intl., returning Wed, Nov 18, priced at $70 found 2 days ago
Fri, Nov 6 - Fri, Nov 13
IAH
George Bush Intercontinental
DEN
Denver Intl.
$73 Roundtrip, found 2 days ago
$73
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Nov 6 from George Bush Intercontinental to Denver Intl., returning Fri, Nov 13, priced at $73 found 2 days ago
Fri, Feb 5 - Mon, Feb 8
DAL
Love Field
DEN
Denver Intl.
$132 Roundtrip, found 5 days ago
$132
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Fri, Feb 5 from Love Field to Denver Intl., returning Mon, Feb 8, priced at $132 found 5 days ago
OriginDestinationTravel DatesFlights From*
DFWDenverJanuary 13 to January 16$54
LAXDenverDecember 30 to January 4$72
ORDDenverOctober 27 to October 31$80
PHXDenverOctober 28 to October 31$80
MSPDenverNovember 14 to November 17$88
ATLDenverJanuary 12 to January 16$114
MIADenverOctober 28 to October 29$128
BOSDenverDecember 12 to December 16$189
LGADenverJanuary 19 to February 4$199
PHLDenverNovember 23 to November 27$212
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
PHXDenverOctober 17 to October 20$251
MSPDenverOctober 17 to October 20$258
LAXDenverOctober 17 to November 19$261
MIADenverOctober 17 to October 21$282
ORDDenverOctober 17 to October 17$346
TTNDenverOctober 17 to November 18$347
DFWDenverOctober 17 to October 25$357
BOSDenverOctober 17 to October 24$379
EWRDenverOctober 18 to October 21$420
ATLDenverOctober 18 to October 20$457
*Prices include taxes and fees

Best Boulder County Flight and Hotel Packages

Price found within the past 48 hours. Click for updated prices.
Glenwood Springs Inn
2.0-star property

Glenwood Springs Inn

Nov 27 - Dec 1

4 night stay

Dallas (DFW) to Denver (DEN)

American Airlines • Coach

Denver (DEN) to Dallas (DFW)

Frontier Airlines • Coach
Save 100% on your flight
Price was $548, price is now $339 per person
$339
per person
found 11 hours ago
The Brown Palace Hotel and Spa, Autograph Collection
4.5-star property

The Brown Palace Hotel and Spa, Autograph Collection

Dec 12 - Dec 16

4 night stay

Austin (AUS) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $568, price is now $352 per person
$352
per person
found 1 day ago
Twin Rivers Condominiums by Alderwood Colorado Management
3.0-star property

Twin Rivers Condominiums by Alderwood Colorado Management

Dec 23 - Dec 28

5 night stay

Dallas (DFW) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,260, price is now $794 per person
$794
per person
found 10 hours ago
Don't see what you're looking for?
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Travelers ❤️ These Boulder County 🏨

Hotel Boulderado

Hotel Boulderado

4 out of 5
2115 13th St Boulder CO
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. Popular attractions Pearl Street Mall and Folsom Field are located nearby.
9.6/10 Exceptional! (1,819 reviews)
"Had a great stay the room was beautiful and clean. Loved being right in the downtown area close to restaurants and shopping. Our favorite stay of our trip."

Reviewed on Oct 10, 2026

Opens in a new windowHotel Boulderado
Limelight Boulder

Limelight Boulder

4 out of 5
1295 University Ave Boulder CO
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 Field are located nearby.
9.8/10 Exceptional! (407 reviews)
"Great stay. Looking forward to the next."

Reviewed on Oct 9, 2026

Opens in a new windowLimelight Boulder
Hotel Longmont

Hotel Longmont

3 out of 5
508 3rd Ave Longmont CO
Stay at this hotel in Longmont. Enjoy free WiFi, breakfast (surcharge), and parking (surcharge). Popular attractions Wibby Brewing and City of Longmont Callahan House are located nearby.
9.8/10 Exceptional! (90 reviews)
"This is a brand new hotel in downtown Longmont. The lobby and reception area are world class beautifully decorated. My room was spacious and had everything you needed including a refrigerator and coffee machine. There also was a gym and a restaurant."

Reviewed on Oct 9, 2026

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
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 attractions Pearl Street Mall and Folsom Field are located nearby.
8.8/10 Excellent! (1,003 reviews)
"Such a wonderful place and well kept and the staff very helpful. I will advise you rent a car. You have to wait almost 30 minutes so get a ride out of the hill."

Reviewed on Oct 9, 2026

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.

Frequently asked questions

How much is the cheapest flight to Boulder County?
Based on prices found over the last seven days on Travelocity, a roundtrip flight to Boulder County was as low as $40. If you can be flexible with your dates, it's easier to land a great bargain. This price was available on Travelocity for flights to Boulder County departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly to Boulder County?
For the greatest chance at scoring an excellent flight deal, time your escape in February. Based on Travelocity's direct flight demand from January to December last year, it's the cheapest time to jet to Boulder County.
How can I check my flight status to Boulder County?
Whether you'd like to view the status of your flight to Boulder County or amend your journey, you'll find all the important info on our customer portal, Trips. Click on "Trips" at the top of our homepage, then sign in or create a new account. Another convenient way to manage all your bookings is with the Travelocity app. Get alerts about flight delays or gate changes and easily share details with any family flying with you.
How do I find the best deals on flights to Boulder County?
Being flexible with your travel dates is one way to walk away with an incredible deal. Travelocity makes it super simple to find your perfect fare through the "Flexible dates" function. First, search for your flight to Boulder County, then compare the cheapest prices for nearby dates by hitting the "Flexible dates" box above. Booking ahead of schedule and avoiding peak periods are other suggestions. In the last seven days, the cheapest price for a return flight to Boulder County was $40. This price was available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Why should I book my flight to Boulder County with Travelocity?
If you're after cheap flights to Boulder County, you'll track down some enticing deals with Travelocity. From cheap family flights with low-cost air carriers to flexible tickets, we can help with your journey. Enjoy a hassle-free break with our 24/7 Virtual Agent online chat, Price Match Guarantee and free cancellations with most hotels. Start packing your case and get ready to fly away to this interesting destination.
What are the most popular flight routes to Boulder County?
Whether you have plans for a short break or a lengthy stay, Travelocity can help you find your flight to Boulder County. The busiest flight routes to this destination include:

  • Chicago, IL (ORD-O'Hare Intl.) to Denver Intl. Airport (DEN) - 4,138 flights a month.
  • Los Angeles, CA (LAX-Los Angeles Intl.) to Denver Intl. Airport (DEN) - 3,683 flights a month.
  • Salt Lake City, UT (SLC-Salt Lake City Intl.) to Denver Intl. Airport (DEN) - 3,549 flights a month.

How much is a flight to Boulder County on average?
Plane tickets for roundtrip flights to Boulder County cost between $40 and $457 in the last seven days. As soon as you find a fantastic deal, lock it in and get ready to take off on your next big adventure with Travelocity. These prices were available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
How long is the average flight to Boulder County?
To get a feel for the average travel time of a direct flight to Boulder County, have a look at these in-demand routes:

  • Chicago, IL (ORD-O'Hare Intl.) to Denver Intl. Airport (DEN) - 2 hours and 38 minutes
  • Los Angeles, CA (LAX-Los Angeles Intl.) to Denver Intl. Airport (DEN) - 2 hours and 24 minutes
  • Salt Lake City, UT (SLC-Salt Lake City Intl.) to Denver Intl. Airport (DEN) - 1 hour and 48 minutes

What can I expect on a flight to Boulder County?
This mainly depends on where you're flying from and which airline company you go with. You'll likely find all types of flights to Boulder County, from business class journeys to cheap flights for family vacations. For long-haul flights, airlines will usually provide food and drinks, a variety of entertainment programs as well as games to keep your little ones amused.

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