
Popular airlines from Seattle-Tacoma International Airport (SEA) to Denver International Airport (DEN)
- Alaska Airlines
Alaska Airlines
- Frontier Airlines
Frontier Airlines
- Delta
Delta
- United
United
- American Airlines
American Airlines
- Southwest Airlines
Southwest Airlines
- Hawaiian Airlines
Hawaiian Airlines
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Cheap flights from Seattle (SEA) to Denver (DEN)
Prices were available within the past 7 days and start at CA $109 for one-way flights and CA $216 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Seattle (SEA) to Denver (DEN)
January is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Denver Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United |
Roundtrip price | CA $208 |
Distance | 1635 km |
Average flight time | 3 hours 41 mins |
Seattle to Denver Flights
The easy way to book your flights from Seattle to Denver
With Expedia, it’s simple to find and book flights to Denver from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Qatar Airways, KLM, JAL, Icelandair, Delta Air Lines, Copa Airlines, Swiss, United Airlines, Alaska Airlines, Frontier Airlines, Southwest Airlines, SAS, Hawaiian Airlines, Korean Air, ANA, Air Tahiti Nui, WestJet, Virgin Atlantic nonstop flights to Denver Intl., too.
Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Denver today, tomorrow, or this week.
Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Denver Intl., DEN
Sort your search results by price to find great deals on your flight from Seattle to Denver—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Denver from Seattle currently is just CA $216 rising to CA $245.
Here are more money-saving tips:
- Fly in November when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to Denver
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!
Reasons to choose Expedia for your flight to Denver from Seattle
Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Denver with Expedia today.
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Seattle Paine Field Intl. Airport
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