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Fares from $54 One Way, $107 Round Trip from Seattle to Denver

Prices starting at $107 for return flights and $54 for one-way flights to Denver were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

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More About Flying To Denver from Seattle

Flights from Seattle to Denver - Frequently Asked Questions

Are there non-stop flights from Seattle to Denver?

There certainly are. And better still — you have 5 airlines that fly nonstop from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Denver, CO Airport (DEN-Denver Intl.) to select from. Check out which one of these popular carriers has the best fares:

  • Alaska Airlines
  • United Airlines
  • Southwest Airlines
  • Delta Air Lines
  • Frontier Airlines
What is the shortest flight from Seattle to Denver?

It can take just 2 hours and 30 minutes to travel from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Denver, CO Airport (DEN-Denver Intl.). Relax and enjoy those window views, because you'll be landing in next to no time.

What airlines fly from Seattle to Denver most frequently?

We all have our preferences when it comes to airlines, and you have a nice selection when traveling from Seattle to Denver. These top carriers fly this route most frequently: Alaska Airlines - (AS) with 152 flights every month United Airlines - (UA) with 112 flights every month Southwest Airlines - (WN) with 97 flights every month Delta Air Lines - (DL) with 82 flights every month

Route Information for Flights from Seattle to Denver

Origin Airport IATA CodeSEA
Destination Airport IATA CodeDEN
Distance1022 mi
Direct Flight AirlinesAlaska Airlines, Frontier Airlines, Southwest Airlines, Delta Air Lines, Korean Air, Volaris, WestJet, United Airlines
Earliest Flight Arrival5:46PM UTC
Latest Flight Arrival5:20AM UTC

Flights Review

Feb 12, 2020

No mechanicals no delays. I’m happy

Feb 2, 2020

The flight attendents were great....first class.

Jan 20, 2020

Best airline at the moment

Jan 4, 2020

Alaska was good. But Orbitz not so good. When I checked in online. It showed no other available seats and we had bad seats. Yet when we got on board there were multiple open rows of seats. We also were in the last boarding group and near the back of the plane. Makes me think Orbitz doesn't have any buying power with the airline. So I will have to consider using Orbitz again in the future.

Dec 27, 2019

Wish we’d been served something to eat besides pretzels 🙁

Dec 26, 2019

Thanks for making my holiday travel easy and for Being reliable

Dec 18, 2019

WiFi really is so awful in all three Delta flights I took this month. It is worthless really. I do appreciate the free movies but on two of the flights the monitors didn’t work the entire flights.

Dec 2, 2019

Seats were very close together. Knees touched seat in front for the man next to me.

Nov 29, 2019

Not at this time.

Oct 31, 2019

Checking in of bags, went smoothly for me but a few people around me had a little trouble with available agents

Cheap Flights from Seattle to Denver

Seattle Airport

While Seattle is home to several airports, the only one that handles commercial flights is the Seattle-Tacoma International Airport. Also known as Sea-Tac, this airport is responsible for all incoming flights, along with flights from Seattle. Alaska Airlines, Air Canada, Delta Air Lines, Southwest Airlines, and US Airways are a few airlines that operate out of this airport. Located in SeaTac, Washington, the airport sits along the intersection of three state routes: 99, 518, and 509. Though the airport has three terminals, only the Concourse Terminal and North Satellite Terminal handle domestic flights. The South Satellite Terminal specializes in international flights. It's just a short drive from the airport to downtown.


When you need to reach your hotel quickly, head for the public transportation system, which consists of Sound Transit and Metro Transit. The buses and light rails only cost a few dollars, and you can visit the sales counter at any station to purchase tickets for your trip. The light rail system drops passengers directly at some of the top hotels in the downtown area. Seattle uses a grid system for its roads, which makes finding your hotel easy if you drive. You can use the sign to look for rental cars from the airport.


If you visit during the spring, winter, or fall, you need a warm coat and an umbrella. Though the city does not get snow, it does get a high amount of rain during these seasons, and temperatures that can drop below 40 degrees Fahrenheit. The summer is much warmer, with temperatures in the high 70s and less rainfall.

Popular Attractions

Seattle is home to dozens of cultural activities and attractions, including the Seattle International Film Festival, the Henry Art Galley, the Woodland Park Zoo, and the Seattle Underground Tour, which takes you through older parts of the city. When you look for flights from Seattle on, take a few minutes to look for other low-cost attractions in the city.

Denver Airport Information

Many of the major domestic and international carriers offer relatively cheap flights to Denver International Airport, the primary airport serving the greater Denver area. The airport is roughly 28 miles east of downtown Denver and a little over an hour from the closest major ski resort. Whether you're coming into town on business or for a ski vacation, be sure to use to reserve your flights and hotel.

Ground Transportation in Denver

The RTD bus is the primary means of public transportation in and around Denver, so most visitors use a private car service, share-a-ride shuttle or taxi to get into town. Many of the large hotels also offer free shuttle service to and from the Denver airport, and there are chartered shuttles and buses to take you to the outlying ski resorts. A cab from the airport to the downtown area will cost you between $60 and $70, so you might be better off using to add a rental car to your low-fare ticket purchase.

Denver Area Weather Information

The summer months are mild in Denver, with average temperatures ranging from the low 60s to the mid-80s. The average winter temperatures in Denver range from the teens to the low 40s, and you can expect anywhere from 22 to 61 inches of snow each season. Layer your clothes in the summer to accommodate mild and warm temperatures, but be sure to bundle up in the winter.

What to Do in Denver

Although the city has its share of high-end eateries, historic landmarks, museums and shopping venues, the Denver lifestyle is all about the great outdoors. Denver has more than 4,000 acres of traditional parks and 14,000 acres of mountain parks to keep outdoor enthusiasts engaged. Enjoy your stay, and don't forget to use to find cheap flights to Denver for your next Colorado vacation.

^Savings based on all package bookings with Flight + Hotel made on from January 1, 2019 to December 31, 2019 as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages.