CA $188 Cheap Flight to Boulder County

View CA $188 flight on Thu, May 21, 2026Opens in a new window

Popular airlines to Boulder County

  • Frontier Airlines

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • JetBlue Airways

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How much is the cheapest flight to Boulder County?

Prices were available within the past 7 days and start at CA $188 for one-way flights and CA $304 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, May 19 - Tue, May 26
YYC
Calgary
DEN
Denver
CA $304 Roundtrip, found 1 day ago
CA $304
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 19 from Calgary to Denver, returning Tue, May 26, priced at CA $304 found 1 day ago
WestJet
Mon, May 25 - Wed, May 27
YYC
Calgary
DEN
Denver
CA $305 Roundtrip, found 1 hour ago
CA $305
Roundtrip
found 1 hour ago
Select WestJet flight, departing Mon, May 25 from Calgary to Denver, returning Wed, May 27, priced at CA $305 found 1 hour ago
WestJet
Wed, May 20 - Tue, May 26
YYC
Calgary
DEN
Denver
CA $310 Roundtrip, found 2 days ago
CA $310
Roundtrip
found 2 days ago
Select WestJet flight, departing Wed, May 20 from Calgary to Denver, returning Tue, May 26, priced at CA $310 found 2 days ago
WestJet
Fri, May 29 - Sat, May 30
YYC
Calgary
DEN
Denver
CA $315 Roundtrip, found 12 hours ago
CA $315
Roundtrip
found 12 hours ago
Select WestJet flight, departing Fri, May 29 from Calgary to Denver, returning Sat, May 30, priced at CA $315 found 12 hours ago
United
Thu, May 21 - Tue, May 26
YYC
Calgary
DEN
Denver
CA $326 Roundtrip, found 5 hours ago
CA $326
Roundtrip
found 5 hours ago
Select United flight, departing Thu, May 21 from Calgary to Denver, returning Tue, May 26, priced at CA $326 found 5 hours ago
United
Mon, May 25 - Mon, Jun 8
YYC
Calgary
DEN
Denver
CA $327 Roundtrip, found 2 days ago
CA $327
Roundtrip
found 2 days ago
Select United flight, departing Mon, May 25 from Calgary to Denver, returning Mon, Jun 8, priced at CA $327 found 2 days ago
Air Canada
Sun, May 24 - Wed, May 27
YYC
Calgary
DEN
Denver
CA $329 Roundtrip, found 1 hour ago
CA $329
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Sun, May 24 from Calgary to Denver, returning Wed, May 27, priced at CA $329 found 1 hour ago
WestJet
Wed, May 20 - Tue, Jun 2
YYC
Calgary
DEN
Denver
CA $329 Roundtrip, found 2 days ago
CA $329
Roundtrip
found 2 days ago
Select WestJet flight, departing Wed, May 20 from Calgary to Denver, returning Tue, Jun 2, priced at CA $329 found 2 days ago
Delta
Tue, May 19 - Wed, May 27
YYC
Calgary
DEN
Denver
CA $335 Roundtrip, found 9 hours ago
CA $335
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, May 19 from Calgary to Denver, returning Wed, May 27, priced at CA $335 found 9 hours ago
American Airlines
Sat, May 23 - Tue, Jun 2
YYC
Calgary
DEN
Denver
CA $561 Roundtrip, found 5 days ago
CA $561
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, May 23 from Calgary to Denver, returning Tue, Jun 2, priced at CA $561 found 5 days ago

Airports in Boulder County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Flights from CA $635
DEN
Denver Intl.
Cheapest
Flights from CA $635

Trending flights to Boulder County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, May 19 - Tue, May 26
YYC
Calgary
DEN
Denver
CA $304 Roundtrip, found 1 day ago
CA $304
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 19 from Calgary to Denver, returning Tue, May 26, priced at CA $304 found 1 day ago

Frequently asked questions

How do I find cheap flights to Boulder County that have flexible change policies?
We know that travel arrangements can change in the blink of an eye, so choosing a flexible fare with Expedia is always a wise idea. Just check the "No change fee" box under the "Flexible change policies" filter. Your low-cost, flexible flight to Boulder County is just a few clicks away.
Which airlines fly to Boulder County?
With a great selection of airlines flying into or near Boulder County, you have plenty of choice:

  • United Airlines - 13,845 flights to or near Boulder County each month, including 13,845 flights to Denver Intl. Airport (DEN) per month.
  • Southwest Airlines - 6,699 flights to or near Boulder County each month, including 6,699 flights to Denver Intl. Airport (DEN) per month.
  • Frontier Airlines - 1,547 flights to or near Boulder County each month, including 1,547 flights to Denver Intl. Airport (DEN) per month.

How can I find cheap tickets to Boulder County?
In the last seven days, CA $304 was the best price for a flight to Boulder County. For an even better fare, book in advance and be flexible with your dates. Search for your trip to Boulder County, then see prices for similar time frames by clicking on the "flexible dates" link above.
How much is a flight to Boulder County?
The cost of a round-trip ticket to Boulder County in the last seven days varied between CA $304 and CA $561. If you were flying one way from Calgary (YYC), you could have purchased a great deal from only CA $188.
What are the most popular airports to fly into in Boulder County?
Jet into Denver Intl. Airport (DEN) and enjoy everything that Boulder County has to offer. As the region's main entry point, approximately 24,420 flights land here each month.
When is the cheapest time to fly to Boulder County?
Departing on a Tuesday, followed by a Monday, is usually the best way to pick up the cheapest airfare. Stay away from the weekends if possible, because Saturday is typically the costliest day. Spend the funds you saved having a good time in Boulder County instead!
How much is a plane ticket to Boulder County?
In the last seven days, tickets to Boulder County fluctuated from CA $304 to CA $561.
What months are the cheapest to book a flight to Boulder County?
To grab a low-cost flight to Boulder County, book during February when the prices are at their cheapest. When do tickets cost the most? In the United States, it's the festive month of December.

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Endless Flight Choices

With 20 different airlines flying to Boulder County, you have a world of options at your fingertips. Whether you're a spontaneous traveler or a meticulous planner, find the flights that suit your schedule and preferences seamlessly. Explore last-minute deals or plan ahead with ease.

Empowering Your Decision

We believe in putting you in control of your travel choices. Our extensive range of airline tickets to Boulder County caters to every budget, starting from the lowest price CA $188. Enjoy the freedom to choose the perfect flights that align with your needs and desires.

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Top Travel Tips for Flying to Boulder County

Travel information

Boulder County Flights Information

Airlines serving
Air Canada, WestJet, United, Delta, Alaska Airlines, American Airlines
Roundtrip price
from CA $304
Boulder County Flights Information

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