$44 Cheap Flights from Seattle to Denver

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Seattle - Tacoma Intl. to Denver Intl.

Amazing SEA to DEN Flight Deals

The cheapest flights to Denver Intl. found within the past 7 days were $88 round trip and $44 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for SEA to DEN

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Best Denver Intl. Flight and Hotel Packages

Denver Intl. flight + hotel packages - economy flights

The Westin Westminster
DoubleTree by Hilton Denver Central Park
Hotel Jerome, Auberge Resorts Collection
Courtyard by Marriott Denver North/Westminster
DoubleTree by Hilton Denver Cherry Creek
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Frequently asked questions

Can I catch a flight from Sea-Tac Airport to DIA airport right now?
It’s always prudent to find out about any quarantine requirements and travel advice reports in effect in your destination city. Ensure you check out the Covid-19 Travel Advisor for up-to-date info on catching a flight to Denver Airport.
Are there direct flights from Seattle - Tacoma Intl. Airport (SEA) to Denver Intl. Airport (DEN)?
Your next incredible adventure is on the opposite side of a single flight. You can travel direct from Sea-Tac Airport to DIA airport with multiple airlines, including United Airlines and Southwest Airlines.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to DEN, please visit our Customer Service Portal.
How long is the flight from SEA to Denver Airport?
The journey from Seattle - Tacoma Intl. Airport (SEA) to DIA airport takes just 2 hours and 42 minutes all up. With such minimal travel time, you won’t need to fret if you forget to pack your phone charger in your carry-on bag.
What is the flight distance from SEA to Denver Airport?
You’ll have to travel around 1,000 mi from Seattle - Tacoma Intl. Airport (SEA) to DIA airport before you can officially kick off your adventures. Pick out a beverage from the drink cart and watch one or two of your favorite shows. You’ll have lots of time!
What airlines fly from SEA to DEN?
If you’re eager to fly direct from SEA to Denver Intl. Airport (DEN), you won’t have a problem finding a fare. Listed below are the most in-demand airlines that will fly you straight to Denver:

  • United Airlines - (UA) with 182 flights every month
  • Southwest Airlines - (WN) with 178 flights every month
  • Alaska Airlines - (AS) with 121 flights every month
  • Delta - (DL) with 121 flights every month

What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with United Airlines, Southwest Airlines or Frontier Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

 

Traveling From Seattle - Tacoma Intl.
Traveling To Denver Intl.
Shortest Flight Time 4 hours 30 mins
Earliest Departure Time 5:04AM MST
Latest Departure Time 9:00PM MST
Lowest Flight Price $88

Route Info

Flight path for flights from Seattle-Tacoma International Airport to Denver International Airport

Distance:
1,028.00 miles

Airlines & Aircraft Used on SEA to DEN Flight Routes

Airline Carrier
Aircraft
Alaska Airlines
Canadair Regional Jet 700
Jet Airways (India)
Boeing 737-900 pax

Discover our best flights from Seattle SEA to Denver DEN. 

With 17 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Seattle SEA to Denver DEN at the right price  

Airfares to Denver DEN from Seattle SEA currently cost between $88 and $133. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Seattle SEA to Denver DEN 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Seattle SEA to Denver DEN on Travelocity starting at $44. Prices and availability subject to change. Additional terms may apply. 

 

Get to Denver DEN from Seattle SEA quicker with direct flights. 

Get to Denver faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to DEN from SEA to take around 4 hour(s) 30 min(s).  

 

Find our cheapest airfares for flights from Seattle SEA to Denver DEN

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to DEN from SEA. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Seattle SEA to Denver DEN today 

If you’re flexible about when you travel, December is usually the cheapest month to fly from Seattle SEA to Denver DEN. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Denver DEN from Seattle SEA 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to DEN from SEA have this option.  

 

Travel with confidence when you book flights to Denver DEN from Seattle SEA with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.