Flights To Boulder County - Cheap Flights Starting at CA $211

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Jet to one of Boulder County's top cities

Boulder

Flights
Boulder
Moonset over Longs Peak

Longmont

Flights
Longmont

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.

Tue, Oct 27 - Tue, Oct 27
YYC
Calgary Intl.
DEN
Denver Intl.
CA $330 Roundtrip, found 6 days ago
CA $330
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Oct 27 from Calgary Intl. to Denver Intl., returning Tue, Oct 27, priced at CA $330 found 6 days ago
Tue, Oct 27 - Wed, Oct 28
YYC
Calgary Intl.
DEN
Denver Intl.
CA $338 Roundtrip, found 6 days ago
CA $338
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Oct 27 from Calgary Intl. to Denver Intl., returning Wed, Oct 28, priced at CA $338 found 6 days ago
Tue, Oct 6 - Sat, Oct 10
YYC
Calgary Intl.
DEN
Denver Intl.
CA $359 Roundtrip, found 1 day ago
CA $359
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 6 from Calgary Intl. to Denver Intl., returning Sat, Oct 10, priced at CA $359 found 1 day ago
Sun, Jul 12 - Thu, Jul 23
ORD
O'Hare Intl.
DEN
Denver Intl.
CA $386 Roundtrip, found 1 day ago
CA $386
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Jul 12 from O'Hare Intl. to Denver Intl., returning Thu, Jul 23, priced at CA $386 found 1 day ago
Thu, Oct 8 - Sun, Oct 11
YYC
Calgary Intl.
DEN
Denver Intl.
CA $388 Roundtrip, found 1 day ago
CA $388
Roundtrip
found 1 day ago
Select WestJet flight, departing Thu, Oct 8 from Calgary Intl. to Denver Intl., returning Sun, Oct 11, priced at CA $388 found 1 day ago
Thu, Jun 18 - Thu, Jun 25
YYC
Calgary Intl.
DEN
Denver Intl.
CA $396 Roundtrip, found 2 days ago
CA $396
Roundtrip
found 2 days ago
Select WestJet flight, departing Thu, Jun 18 from Calgary Intl. to Denver Intl., returning Thu, Jun 25, priced at CA $396 found 2 days ago
Wed, Jun 3 - Sat, Jun 13
YYC
Calgary Intl.
DEN
Denver Intl.
CA $409 Roundtrip, found 3 days ago
CA $409
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Jun 3 from Calgary Intl. to Denver Intl., returning Sat, Jun 13, priced at CA $409 found 3 days ago
Wed, Jun 17 - Tue, Jun 23
YVR
Vancouver Intl.
DEN
Denver Intl.
CA $422 Roundtrip, found 1 day ago
CA $422
Roundtrip
found 1 day ago
Select WestJet flight, departing Wed, Jun 17 from Vancouver Intl. to Denver Intl., returning Tue, Jun 23, priced at CA $422 found 1 day ago
Thu, Jun 18 - Thu, Jun 25
YEG
Edmonton Intl.
DEN
Denver Intl.
CA $496 Roundtrip, found 2 days ago
CA $496
Roundtrip
found 2 days ago
Select WestJet flight, departing Thu, Jun 18 from Edmonton Intl. to Denver Intl., returning Thu, Jun 25, priced at CA $496 found 2 days ago
OriginDestinationTravel datesFlights from*
MSPDenverAugust 29 to September 1CA $202
BOSDenverJuly 28 to August 3CA $287
DFWDenverJuly 14 to July 21CA $306
PHXDenverAugust 5 to August 8CA $306
LAXDenverAugust 19 to August 22CA $354
JFKDenverAugust 12 to August 15CA $368
ORDDenverJuly 12 to July 23CA $386
ATLDenverJuly 18 to July 21CA $574
PHLDenverJuly 31 to August 4CA $592
MIADenverJune 20 to June 25CA $12,019
*Prices include taxes and fees
OriginDestinationTravel datesFlights from*
MSPDenverMay 29 to June 1CA $376
PHXDenverMay 30 to June 1CA $445
LAXDenverMay 30 to May 31CA $644
BOSDenverMay 29 to June 7CA $717
DFWDenverMay 30 to June 1CA $787
JFKDenverMay 29 to May 31CA $791
PHLDenverMay 31 to June 5CA $1,042
ORDDenverMay 29 to May 31CA $1,058
ATLDenverMay 29 to May 31CA $1,326
MIADenverMay 29 to June 5CA $23,635
*Prices include taxes and fees
Price found within the past 48 hours. Click for updated prices.
Summit Villa BnB
3.0-star property

Summit Villa BnB

Jul 10 - Jul 13

3 night stay

Calgary (YYC) to Denver (DEN)

United • Roundtrip • Coach
Price was CA $749, price is now CA $538 per person
CA $538
per person
found 3 hours ago
Hyatt Vacation Club at The Ranahan
4.0-star property

Hyatt Vacation Club at The Ranahan

Aug 4 - Aug 10

6 night stay

Toronto (YYZ) to Denver (DEN)

American Airlines • Non-stop roundtrip • Coach
Price was CA $1,741, price is now CA $1,230 per person
CA $1,230
per person
found 1 day ago
A-Lodge Boulder
3.0-star property

A-Lodge Boulder

Jul 1 - Jul 7

6 night stay

Calgary (YYC) to Denver (DEN)

WestJet • Roundtrip • Coach
Price was CA $1,663, price is now CA $1,217 per person
CA $1,217
per person
found 1 day ago
Don't see what you're looking for?
See all available trips from Calgary to Boulder County
View all trips

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! (1,742 reviews)
"We stayed because of the close proximity to the Boulder Theatre. Room was nice and the bed was comfortable. We enjoyed checking out the info about this historic hotel too."

Reviewed on May 21, 2026

Opens in a new windowHotel Boulderado
Comfort Inn & Suites Boulder

Comfort Inn & Suites Boulder

3 out of 5
4777 North Broadway Boulder CO
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 staff in our reviews. Popular attractions Pearl Street Mall and Folsom Field are located nearby.
8.6/10 Excellent! (926 reviews)
"Robert at the front desk was helpful and friendly, the room was kept neat and clean. The breakfast was delicious and had multiple choices that were hot when needed or cold as needed. Even the coffiee pot was kept filled."

Reviewed on May 19, 2026

Opens in a new windowComfort Inn & Suites Boulder
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! (226 reviews)
"This is the greatest place! The staff go above and beyond! Highly, highly recommend!"

Reviewed on May 21, 2026

Opens in a new windowLimelight Boulder
Save an average of 15% on thousands of hotels when you're signed in
Sign in
Sign up, it's free
Hyatt Place Boulder/Pearl Street

Hyatt Place Boulder/Pearl Street

3 out of 5
2280 Junction Pl Boulder CO
Book a stay at this business-friendly hotel in Boulder. Enjoy free breakfast, free WiFi, and room service. Our guests praise the breakfast and the helpful staff in our reviews. Popular attractions Folsom Field and Pearl Street Mall are located nearby.
8.8/10 Excellent! (1,244 reviews)
"Amazing stay! We had the corner room with our baby! We loved it and so did he :) staff was very helpful and it was the cleanest hotel on our cross country trip!"

Reviewed on May 21, 2026

Opens in a new windowHyatt Place Boulder/Pearl Street
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 CA $202. 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 October. 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 CA $202. 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 CA $202 and CA $23,635 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.