
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 for one-way flights and round trip tickets 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)
October is typically the cheapest month to fly
Frequently asked questions
Travel information
Travel information
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Denver Intl. |
Return price | AU$202 |
Distance | 1635 km |
Average flight time | 3 hours 40 mins |
Book with confidence
Book with confidence
Your quick guide to flights from Seattle to Denver
Pick up great flights from Seattle to Denver
With Expedia, you have your pick of flights a day with 20 airlines covering flights from Seattle to Denver. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Seattle to Denver that take around hours.
Find cheap flights from Seattle to Denver
From the great flight deals with prices currently ranging from AU$203 to AU$294, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Seattle to Denver around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Denver is normally in October.
Reasons to book your flight from Seattle to Denver with Expedia
Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Seattle to Denver across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Denver right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.
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