$42 Cheap flight deals from Carlsbad (SAN) to Boulder (DEN)
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This Weekend's Flight Deals from Carlsbad to Boulder
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $42 One Way, $84 Round Trip from Carlsbad to Boulder
Prices starting at $84 for return flights and $42 for one-way flights to Boulder were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Boulder economy flight packages
The Brown Palace Hotel and Spa, Autograph Collection
Aug 15 - Aug 18
San Diego (SAN) to Denver (DEN)
Reviewed on Jul 9, 2026
The Slate Denver, Tapestry Collection By Hilton
Aug 27 - Sep 1
San Diego (SAN) to Denver (DEN)
Reviewed on Jul 10, 2026
Tru By Hilton Denver Downtown Convention Center
Aug 27 - Sep 1
San Diego (SAN) to Denver (DEN)
Reviewed on Jul 12, 2026
More About Flying To Boulder from Carlsbad
Route Information for Flights from Carlsbad to Boulder
Origin Airport IATA Code | SAN |
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Destination Airport IATA Code | DEN |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Carlsbad to Boulder
Getting a spectacularly low fare on Carlsbad to Boulder flights is always possible when you use Orbitz as your personal travel planner. Orbitz is your essential travel resource for low cost flights from Carlsbad to Boulder, discount hotel accommodations, cheap car rentals, and more.
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Our free cutting-edge mobile apps for iPad, Android, and iPhone make it easy to find the best fares when researching and booking flights from Carlsbad to Boulder. You can also use the apps to check your flight status, find baggage claims details, and get exclusive mobile discount rates on car rentals and hotels.
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Stay in Your Budget and Still Get Great Accommodations
Orbitz shoppers can access affordable vacation packages and have the option of booking their departure and arrival flights through different airlines, making travel less costly and more convenient. The best prices on flights from Carlsbad to Boulderare always found on Orbitz.
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.