Lowest Priced Flights to Denver on Alaska Airlines starting at $59*
Most popular flights to Denver on Alaska Airlines.*
Seattle (SEA)to
Denver (DEN)Seattle (SEA)to
Denver (DEN)Seattle (SEA)to
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Denver (DEN)Seattle (SEA)to
Denver (DEN)Portland (PDX)to
Denver (DEN)Portland (PDX)to
Denver (DEN)Portland (PDX)to
Denver (DEN)Portland (PDX)to
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Denver (DEN)San Diego (SAN)to
Denver (DEN)San Diego (SAN)to
Denver (DEN)San Diego (SAN)to
Denver (DEN)San Diego (SAN)to
Denver (DEN)San Diego (SAN)to
Denver (DEN)Anchorage (ANC)to
Denver (DEN)Anchorage (ANC)to
Denver (DEN)Anchorage (ANC)to
Denver (DEN)Anchorage (ANC)to
Denver (DEN)Anchorage (ANC)to
Denver (DEN)*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
Top offers for Denver one-way flights.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | Denver (DEN) | One-way | Saver | Depart: Jan 30, 2026 | From $59 Seen: 6 hours ago | |
| Seattle (SEA) | Denver (DEN) | One-way | Saver | Depart: Feb 2, 2026 | From $59 Seen: 6 hours ago | |
| Seattle (SEA) | Denver (DEN) | One-way | Saver | Depart: Feb 8, 2026 | From $59 Seen: 6 hours ago | |
| Seattle (SEA) | Denver (DEN) | One-way | Saver | Depart: Feb 24, 2026 | From $59 Seen: 6 hours ago | |
| Seattle (SEA) | Denver (DEN) | One-way | Saver | Depart: Feb 27, 2026 | From $59 Seen: 6 hours ago | |
| Seattle (SEA) | Denver (DEN) | One-way | Saver | Depart: Mar 1, 2026 | From $59 Seen: 6 hours ago | |
| San Diego (SAN) | Denver (DEN) | One-way | Saver | Depart: Apr 5, 2026 | From $59 Seen: 16 hours ago | |
| San Diego (SAN) | Denver (DEN) | One-way | Saver | Depart: Feb 18, 2026 | From $59 Seen: 8 hours ago | |
| San Diego (SAN) | Denver (DEN) | One-way | Saver | Depart: Mar 30, 2026 | From $59 Seen: 9 hours ago | |
| San Diego (SAN) | Denver (DEN) | One-way | Saver | Depart: Apr 17, 2026 | From $59 Seen: 5 hours ago | |
| San Diego (SAN) | Denver (DEN) | One-way | Saver | Depart: Feb 26, 2026 | From $59 Seen: 12 hours ago | |
| San Diego (SAN) | Denver (DEN) | One-way | Saver | Depart: Mar 15, 2026 | From $59 Seen: 17 hours ago | |
| Phoenix (PHX) | Denver (DEN) | One-way | Saver | Depart: Feb 24, 2026 | From $68 Seen: 6 hours ago | |
| Phoenix (PHX) | Denver (DEN) | One-way | Saver | Depart: Feb 21, 2026 | From $68 Seen: 6 hours ago | |
| Phoenix (PHX) | Denver (DEN) | One-way | Saver | Depart: Mar 3, 2026 | From $68 Seen: 6 hours ago | |
| Phoenix (PHX) | Denver (DEN) | One-way | Saver | Depart: Feb 18, 2026 | From $68 Seen: 6 hours ago | |
| Phoenix (PHX) | Denver (DEN) | One-way | Saver | Depart: Feb 25, 2026 | From $68 Seen: 6 hours ago | |
| Phoenix (PHX) | Denver (DEN) | One-way | Saver | Depart: Feb 28, 2026 | From $68 Seen: 6 hours ago | |
| Portland (PDX) | Denver (DEN) | One-way | Saver | Depart: Feb 3, 2026 | From $69 Seen: 6 hours ago | |
| Portland (PDX) | Denver (DEN) | One-way | Saver | Depart: Feb 14, 2026 | From $69 Seen: 6 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
Plan a trip to Denver
Denver is a great American city where urban accomodation meets Rocky Mountain adventure. Known as the “Mile High City,” Denver blends its outdoorsy vibe with a thriving arts, dining, and craft beer scene. Whether you're exploring the vibrant neighborhoods of RiNo and LoDo or setting off for a day in the mountains to ski, denver is a city where city life and nature go hand in hand. Few destinations offer such effortless access to both downtown culture and alpine escapes. Come see what makes Denver so unforgettable.
Things to do in Denver
- Catch a show at Red Rocks Amphitheatre, a world-famous outdoor venue set in stunning natural rock formations.
- Stroll through the historic streets of Larimer Square and discover unique shops, restaurants, and nightlife.
- Explore the Denver Art Museum and the immersive Meow Wolf installation in the city’s creative core.
- Sample local craft brews along the Denver Beer Trail, home to one of the largest concentrations of breweries in the country.
- Walk or bike along the scenic Cherry Creek Trail or rent a paddleboard at Sloan’s Lake.
- Take a daytrip to shred the powder at famous resorts like Vail, Aspen, Breckenridge, Steamboat, and Arapahoe Basin.
- Take a day trip to Rocky Mountain National Park for fresh air and unforgettable views.
Best time to travel to Denver
The best time to visit Denver is in the spring (April to May) and fall (September to October), when the weather is mild and the crowds are lighter. Summer is popular for festivals, hiking, and patio dining, while winter draws snow lovers with easy access to nearby ski resorts. Thanks to Denver’s high altitude and low humidity, even cooler months often bring sunny, bluebird skies.
Flying into Denver International Airport (DEN)
View airport information for Denver International Airport (DEN)