Flights To Boulder County - Cheap Flights Starting at CA $113

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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, Nov 7 - Mon, Nov 9
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $224 Roundtrip, found 5 hours ago
CA $224
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Nov 7 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Nov 9, priced at CA $224 found 5 hours ago
Sat, Nov 7 - Mon, Nov 9
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $224 Roundtrip, found 5 hours ago
CA $224
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Sat, Nov 7 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Nov 9, priced at CA $224 found 5 hours ago
Sat, Nov 7 - Mon, Nov 9
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $225 Roundtrip, found 5 hours ago
CA $225
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Nov 7 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Nov 9, priced at CA $225 found 5 hours ago
Wed, Dec 2 - Tue, Dec 8
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $233 Roundtrip, found 11 hours ago
CA $233
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Wed, Dec 2 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Dec 8, priced at CA $233 found 11 hours ago
Sat, Nov 7 - Mon, Nov 9
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $251 Roundtrip, found 5 hours ago
CA $251
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Sat, Nov 7 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Nov 9, priced at CA $251 found 5 hours ago
Sat, Nov 7 - Mon, Nov 9
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
CA $381 Roundtrip, found 5 hours ago
CA $381
Roundtrip
found 5 hours ago
Select United flight, departing Sat, Nov 7 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Nov 9, priced at CA $381 found 5 hours ago
Thu, Jan 28 - Sun, Jan 31
PAE
Seattle Paine Field Intl. Airport
DEN
Denver Intl.
CA $443 Roundtrip, just found
CA $443
Roundtrip
just found
Select Alaska Airlines flight, departing Thu, Jan 28 from Seattle Paine Field Intl. Airport to Denver Intl., returning Sun, Jan 31, priced at CA $443 just found
Thu, Nov 12 - Wed, Nov 18
YYC
Calgary Intl.
DEN
Denver Intl.
CA $454 Roundtrip, found 1 hour ago
CA $454
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Nov 12 from Calgary Intl. to Denver Intl., returning Wed, Nov 18, priced at CA $454 found 1 hour ago
Sat, May 22 - Mon, May 31
YVR
Vancouver Intl.
DEN
Denver Intl.
CA $508 Roundtrip, found 1 day ago
CA $508
Roundtrip
found 1 day ago
Select WestJet flight, departing Sat, May 22 from Vancouver Intl. to Denver Intl., returning Mon, May 31, priced at CA $508 found 1 day ago
Thu, May 27 - Mon, May 31
YEG
Edmonton Intl.
DEN
Denver Intl.
CA $524 Roundtrip, found 2 days ago
CA $524
Roundtrip
found 2 days ago
Select WestJet flight, departing Thu, May 27 from Edmonton Intl. to Denver Intl., returning Mon, May 31, priced at CA $524 found 2 days ago
OriginDestinationTravel datesFlights from*
MSPDenverOctober 27 to October 30CA $167
DFWDenverNovember 4 to November 10CA $187
LAXDenverOctober 28 to October 31CA $233
PHXDenverNovember 26 to December 3CA $267
BOSDenverNovember 12 to November 16CA $269
ORDDenverNovember 6 to November 10CA $307
JFKDenverOctober 29 to November 2CA $358
MIADenverOctober 21 to October 27CA $473
ATLDenverNovember 20 to November 22CA $556
PHLDenverDecember 21 to December 29CA $714
*Prices include taxes and fees
OriginDestinationTravel datesFlights from*
MSPDenverOctober 9 to October 11CA $529
PHXDenverOctober 10 to October 13CA $569
MIADenverOctober 10 to October 17CA $624
LAXDenverOctober 10 to October 14CA $633
ORDDenverOctober 10 to October 14CA $737
DFWDenverOctober 11 to October 16CA $779
EWRDenverOctober 11 to October 16CA $915
BOSDenverOctober 11 to October 17CA $935
ATLDenverOctober 9 to October 11CA $1,437
*Prices include taxes and fees
Price found within the past 48 hours. Click for updated prices.
Laurelwood Condominiums
3.0-star property

Laurelwood Condominiums

Nov 18 - Nov 24

6 night stay

Edmonton (YEG) to Denver (DEN)

Alaska Airlines • Non-stop • Coach

Denver (DEN) to Edmonton (YEG)

Delta • Non-stop • Coach
Price was CA $2,043, price is now CA $1,747 per person
CA $1,747
per person
found 24 hours ago
Hotel Jerome, Auberge Collection
5.0-star property

Hotel Jerome, Auberge Collection

Nov 18 - Nov 24

6 night stay

Edmonton (YEG) to Denver (DEN)

Alaska Airlines • Non-stop • Coach

Denver (DEN) to Edmonton (YEG)

Delta • Non-stop • Coach
Save 100% on your flight
Price was CA $5,465, price is now CA $4,197 per person
CA $4,197
per person
found 24 hours ago
Aspen Hideaway by Avantstay Walk to Aspen, Near Slopes + Pool & Hot Tub Access
3.0-star property

Aspen Hideaway by Avantstay Walk to Aspen, Near Slopes + Pool & Hot Tub Access

Nov 18 - Nov 24

6 night stay

Edmonton (YEG) to Denver (DEN)

Alaska Airlines • Non-stop • Coach

Denver (DEN) to Edmonton (YEG)

Delta • Non-stop • Coach
Price was CA $4,527, price is now CA $3,714 per person
CA $3,714
per person
found 24 hours ago
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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.
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.
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! (89 reviews)
"It was great. I recommend this spot! Legit hotel."

Reviewed on Oct 6, 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! (1,001 reviews)
"The best staff I’ve ever met with clean rooms close to hiking and biking trails."

Reviewed on Oct 6, 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 CA $167. 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 November. 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 $167. 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 $167 and CA $1,437 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.