$79 Cheap Delta flights Seattle (SEA) to Denver (DEN)

Scoring cheap one-way Delta Air Lines flights from SEA to DEN from $79 on Expedia is a cinch — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $152 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to jet away to Denver with Delta Air Lines. You could also find fantastic deals on one-way and return tickets in November.

Begin your search one to three months ahead of your departure date to find cheaper fares on Delta Air Lines flights from Seattle - Tacoma Intl. Airport (SEA) to Denver Intl. Airport (DEN). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Skip the layovers and fly from Seattle - Tacoma Intl. Airport (SEA) to Denver Intl. Airport (DEN) on any of Delta Air Lines’s 21 direct weekly flights. Apply Expedia’s “Nonstop” and “Airline” filters to find the Delta Air Lines flight that’ll land at DEN at your preferred time.

Depart Seattle - Tacoma Intl. Airport (SEA) for Denver Intl. Airport (DEN) on a direct Delta Air Lines flight, and you’ll be in the skies for about 2h 47m.

Saturday has the most Delta Air Lines flights from Seattle - Tacoma Intl. Airport (SEA) to Denver Intl. Airport (DEN). With 3 daily departures, this is the best day of the week to find something that will suit your schedule.

Taking off from SEA at 8:15AM UTC-8, the earliest Delta Air Lines flight to DEN lands at 12:10PM UTC-7. Flying early means you’re less likely to experience cancellations.* Not a morning person? The last Delta Air Lines flight from SEA to DEN departs at 7:55PM UTC-8 and touches down at 11:42PM UTC-7.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Board a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Denver, and you’ll probably come in to Denver Intl. Airport (DEN). This is the airline’s primary hub in this city.

Jetting off from SEA to DEN with Delta Air Lines means enjoying a variety of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That’s on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Seattle - Tacoma Intl. Airport (SEA) to Denver Intl. Airport (DEN) route, Delta Air Lines typically operates Embraer 175 and Airbus A220-300 planes. Keep in mind that last-minute changes are possible for operational purposes, so your flight may be on a different aircraft.

It’s generally possible to cancel or reschedule your flight, although there may be a charge if your booking was made more than 24 hours ago. Prefer to keep your options open? Use Expedia’s “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you need to adjust your plans. To update your booking, head to “Trips,” select your flight and click on “Manage Booking” for further information.