Flights To Boulder County - Cheap Flights Starting at CA $169

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

Boulder

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

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.

Sat, May 15 - Sat, May 15
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $329 Roundtrip, found 1 day ago
CA $329
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, May 15 from Seattle - Tacoma Intl. to Denver Intl., returning Sat, May 15, priced at CA $329 found 1 day ago
Tue, Oct 13 - Tue, Oct 13
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $337 Roundtrip, found 1 day ago
CA $337
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 13 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Oct 13, priced at CA $337 found 1 day ago
Wed, Aug 19 - Wed, Sep 2
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $344 Roundtrip, found 8 hours ago
CA $344
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Aug 19 from Seattle - Tacoma Intl. to Denver Intl., returning Wed, Sep 2, priced at CA $344 found 8 hours ago
Sun, Nov 1 - Sun, Nov 1
YYC
Calgary Intl.
DEN
Denver Intl.
CA $362 Roundtrip, found 4 days ago
CA $362
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Nov 1 from Calgary Intl. to Denver Intl., returning Sun, Nov 1, priced at CA $362 found 4 days ago
Mon, Nov 2 - Wed, Nov 4
YYC
Calgary Intl.
DEN
Denver Intl.
CA $362 Roundtrip, found 4 days ago
CA $362
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 2 from Calgary Intl. to Denver Intl., returning Wed, Nov 4, priced at CA $362 found 4 days ago
Thu, Oct 8 - Sun, Oct 11
YYC
Calgary Intl.
DEN
Denver Intl.
CA $374 Roundtrip, found 16 hours ago
CA $374
Roundtrip
found 16 hours ago
Select WestJet flight, departing Thu, Oct 8 from Calgary Intl. to Denver Intl., returning Sun, Oct 11, priced at CA $374 found 16 hours ago
Sat, Sep 19 - Sat, Sep 26
PAE
Seattle Paine Field Intl. Airport
DEN
Denver Intl.
CA $401 Roundtrip, found 2 days ago
CA $401
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Sep 19 from Seattle Paine Field Intl. Airport to Denver Intl., returning Sat, Sep 26, priced at CA $401 found 2 days ago
Tue, Sep 15 - Tue, Sep 22
YYC
Calgary Intl.
DEN
Denver Intl.
CA $410 Roundtrip, found 1 day ago
CA $410
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Sep 15 from Calgary Intl. to Denver Intl., returning Tue, Sep 22, priced at CA $410 found 1 day ago
Tue, Sep 1 - Wed, Sep 2
YVR
Vancouver Intl.
DEN
Denver Intl.
CA $446 Roundtrip, found 5 hours ago
CA $446
Roundtrip
found 5 hours ago
Select WestJet flight, departing Tue, Sep 1 from Vancouver Intl. to Denver Intl., returning Wed, Sep 2, priced at CA $446 found 5 hours ago
Wed, Jul 22 - Fri, Jul 24
YXX
Abbotsford Intl.
DEN
Denver Intl.
CA $456 Roundtrip, found 9 hours ago
CA $456
Roundtrip
found 9 hours ago
Select WestJet flight, departing Wed, Jul 22 from Abbotsford Intl. to Denver Intl., returning Fri, Jul 24, priced at CA $456 found 9 hours ago
OriginDestinationTravel datesFlights from*
MSPDenverAugust 27 to August 31CA $280
PHXDenverSeptember 12 to September 19CA $309
ATLDenverSeptember 20 to September 22CA $323
BOSDenverAugust 20 to August 23CA $359
ORDDenverSeptember 17 to September 20CA $376
LAXDenverAugust 5 to August 12CA $392
JFKDenverAugust 29 to September 1CA $403
DFWDenverSeptember 4 to September 7CA $447
PHLDenverAugust 21 to August 24CA $453
MIADenverAugust 8 to August 12CA $22,312
*Prices include taxes and fees
OriginDestinationTravel datesFlights from*
MSPDenverJuly 10 to July 13CA $360
PHXDenverJuly 12 to July 15CA $482
BOSDenverJuly 12 to July 14CA $740
JFKDenverJuly 10 to July 12CA $801
ORDDenverJuly 11 to July 13CA $958
DFWDenverJuly 11 to July 19CA $1,163
ATLDenverJuly 11 to July 13CA $1,208
PHLDenverJuly 11 to July 12CA $1,335
*Prices include taxes and fees
Price found within the past 48 hours. Click for updated prices.
Hotel Polaris
4.5-star property

Hotel Polaris

Jul 12 - Jul 16

4 night stay

Calgary (YYC) to Denver (DEN)

WestJet • Roundtrip • Coach
Price was CA $1,731, price is now CA $1,386 per person
CA $1,386
per person
found 1 day ago
Flying Horse Resort & Club
4.5-star property

Flying Horse Resort & Club

Jul 12 - Jul 16

4 night stay

Calgary (YYC) to Denver (DEN)

WestJet • Roundtrip • Coach
Price was CA $2,053, price is now CA $1,719 per person
CA $1,719
per person
found 1 day ago
Discovery Lodge
3.0-star property

Discovery Lodge

Jul 12 - Jul 16

4 night stay

Calgary (YYC) to Denver (DEN)

WestJet • Roundtrip • Coach
Price was CA $1,808, price is now CA $1,539 per person
CA $1,539
per person
found 1 day ago
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Travelers ❤️ These Boulder County 🏨

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! (282 reviews)
"My favorite hotel! Great vibe, wonderful staff, awesome rooms and bathrooms, inviting atmosphere, incredible views and location…. I could go on! A gem of a hotel!"

Reviewed on Jul 7, 2026

Opens in a new windowLimelight Boulder
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! (1,756 reviews)
"Loved the beautiful architecture! Our check in experience was very smooth. Friendly staff."

Reviewed on Jul 4, 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! (967 reviews)
"Our first room did not have a pleasant smell we addressed our concerns with the front desk and we were accommodated with an exceptional upgrade. Parking at night was challenging with a large suv. We definitely enjoyed our stay. Front Desk staff were very friendly and go above and beyond. I would ..."

Reviewed on Jul 7, 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
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 the clean rooms in our reviews. Popular attractions Folsom Field and Pearl Street Mall are located nearby.
9/10 Wonderful! (1,002 reviews)
"Nice area, felt safe. I was told we had free breakfast and then told we did not because we booked on Expedia and got a great rate. I am an awards member. I will stay somewhere else next time"

Reviewed on Jul 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.

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 $280. 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 May. 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 $280. 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 $280 and CA $22,312 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.