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

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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.

Thu, Aug 27 - Mon, Aug 31
DTW
Detroit Metropolitan Wayne County
DEN
Denver Intl.
CA $318 Roundtrip, found 1 day ago
CA $318
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Thu, Aug 27 from Detroit Metropolitan Wayne County to Denver Intl., returning Mon, Aug 31, priced at CA $318 found 1 day ago
Wed, Aug 19 - Tue, Aug 25
DTW
Detroit Metropolitan Wayne County
DEN
Denver Intl.
CA $355 Roundtrip, found 3 days ago
CA $355
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Wed, Aug 19 from Detroit Metropolitan Wayne County to Denver Intl., returning Tue, Aug 25, priced at CA $355 found 3 days ago
Fri, Aug 28 - Wed, Sep 2
DTW
Detroit Metropolitan Wayne County
DEN
Denver Intl.
CA $356 Roundtrip, found 4 days ago
CA $356
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Fri, Aug 28 from Detroit Metropolitan Wayne County to Denver Intl., returning Wed, Sep 2, priced at CA $356 found 4 days ago
Sun, Nov 1 - Sun, Nov 1
YYC
Calgary Intl.
DEN
Denver Intl.
CA $362 Roundtrip, found 6 days ago
CA $362
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Nov 1 from Calgary Intl. to Denver Intl., returning Sun, Nov 1, priced at CA $362 found 6 days ago
Mon, Nov 2 - Wed, Nov 4
YYC
Calgary Intl.
DEN
Denver Intl.
CA $362 Roundtrip, found 6 days ago
CA $362
Roundtrip
found 6 days ago
Select United flight, departing Mon, Nov 2 from Calgary Intl. to Denver Intl., returning Wed, Nov 4, priced at CA $362 found 6 days ago
Mon, Oct 26 - Sat, Oct 31
DTW
Detroit Metropolitan Wayne County
DEN
Denver Intl.
CA $369 Roundtrip, found 1 day ago
CA $369
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Mon, Oct 26 from Detroit Metropolitan Wayne County to Denver Intl., returning Sat, Oct 31, priced at CA $369 found 1 day ago
Thu, Oct 8 - Sun, Oct 11
YYC
Calgary Intl.
DEN
Denver Intl.
CA $374 Roundtrip, found 2 days ago
CA $374
Roundtrip
found 2 days ago
Select WestJet flight, departing Thu, Oct 8 from Calgary Intl. to Denver Intl., returning Sun, Oct 11, priced at CA $374 found 2 days ago
Sat, Aug 15 - Sat, Aug 22
DTW
Detroit Metropolitan Wayne County
DEN
Denver Intl.
CA $382 Roundtrip, found 1 day ago
CA $382
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Aug 15 from Detroit Metropolitan Wayne County to Denver Intl., returning Sat, Aug 22, priced at CA $382 found 1 day ago
Sun, Aug 23 - Sun, Aug 30
YVR
Vancouver Intl.
DEN
Denver Intl.
CA $447 Roundtrip, found 1 hour ago
CA $447
Roundtrip
found 1 hour ago
Select WestJet flight, departing Sun, Aug 23 from Vancouver Intl. to Denver Intl., returning Sun, Aug 30, priced at CA $447 found 1 hour ago
Wed, Jul 22 - Fri, Jul 24
YXX
Abbotsford Intl.
DEN
Denver Intl.
CA $456 Roundtrip, found 1 day ago
CA $456
Roundtrip
found 1 day ago
Select WestJet flight, departing Wed, Jul 22 from Abbotsford Intl. to Denver Intl., returning Fri, Jul 24, priced at CA $456 found 1 day ago
OriginDestinationTravel datesFlights from*
PHXDenverSeptember 12 to September 19CA $224
ATLDenverAugust 20 to August 24CA $237
LAXDenverAugust 5 to August 8CA $238
MSPDenverAugust 27 to August 31CA $280
JFKDenverAugust 20 to August 24CA $292
ORDDenverSeptember 17 to September 20CA $329
BOSDenverAugust 31 to September 2CA $330
PHLDenverAugust 21 to August 24CA $356
MIADenverAugust 4 to August 11CA $372
DFWDenverSeptember 4 to September 7CA $394
*Prices include taxes and fees
OriginDestinationTravel datesFlights from*
MSPDenverJuly 10 to July 12CA $416
PHXDenverJuly 11 to July 15CA $453
DFWDenverJuly 11 to July 19CA $661
ORDDenverJuly 11 to July 13CA $689
PHLDenverJuly 11 to July 12CA $723
BOSDenverJuly 10 to July 13CA $755
LAXDenverJuly 12 to July 19CA $858
JFKDenverJuly 10 to July 12CA $947
ATLDenverJuly 10 to July 19CA $1,445
*Prices include taxes and fees
Price found within the past 48 hours. Click for updated prices.
The Slate Denver, Tapestry Collection By Hilton
4.0-star property

The Slate Denver, Tapestry Collection By Hilton

Sep 21 - Sep 25

4 night stay

Detroit (DTT) to Denver (DEN)

American Airlines • Non-stop roundtrip • Coach
Price was CA $1,186, price is now CA $854 per person
CA $854
per person
found 23 hours ago
The Brown Palace Hotel and Spa, Autograph Collection
4.5-star property

The Brown Palace Hotel and Spa, Autograph Collection

Sep 21 - Sep 25

4 night stay

Detroit (DTT) to Denver (DEN)

American Airlines • Non-stop roundtrip • Coach
Price was CA $1,449, price is now CA $1,029 per person
CA $1,029
per person
found 23 hours ago
Catbird Hotel
4.0-star property

Catbird Hotel

Oct 6 - Oct 10

4 night stay

Calgary (YYC) to Denver (DEN)

Air Canada • Non-stop roundtrip • Coach
Price was CA $1,257, price is now CA $939 per person
CA $939
per person
found 2 hours 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! (285 reviews)
"The property is relaxing with a clean design. All of the staff members were helpful and kind. The food at the restaurant was delicious. The pool area is beautiful and the gym was fantastic. The room amenities are a perk too. We'll be staying here when we return. Thank you!"

Reviewed on Jul 8, 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! (1,757 reviews)
"Great location. Enjoyed our stay."

Reviewed on Jul 8, 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 $224. 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 August. 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 $224. 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 $224 and CA $1,445 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.