CA $67 Cheap Flights from Seattle (SEA) to Denver (DEN)

Flight 1

Popular airlines from Seattle-Tacoma International Airport (SEA) to Denver International Airport (DEN)

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Cheap flights from Seattle (SEA) to Denver (DEN)

Prices were available within the past 7 days and start at CA $67 for one-way flights and CA $133 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
Delta
Delta
Delta
Alaska Airlines
Hawaiian Airlines
Delta
American Airlines
United

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Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Find the cheapest month to fly from Seattle (SEA) to Denver (DEN)

January is typically the cheapest month to fly

From CA $76 - CA $207 per traveller.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Denver Intl. Airport (DEN)?
Based on fares offered within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from Sea-Tac Airport to DEN start from CA $133. Make your booking ASAP to get the best price for your big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Denver Intl. Airport (DEN)?
Every air carrier has its own terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from SEA to DIA airport that have flexible change policies?
Plenty of airlines offer the option to move your flight without a change fee. All you pay is any additional cost for the new flight. When searching for Sea-Tac Airport to Denver Airport flights, you'll see a "No change fees" filter for you to select.
How many hours is the flight from Sea-Tac Airport to DIA airport?
The flight time from SEA to DEN is a mere 2 hours and 44 minutes, so don't get too cozy. Chances are the next time you glance out the window you'll be cruising over Denver.
How far is the flight from Sea-Tac Airport to DIA airport?
The flight distance between Sea-Tac Airport and DEN is 1,650 kilometres. Pack yourself a drink, a snack and an interesting book to read. Keep yourself entertained and time will zip by.
Which airlines fly direct from SEA to DIA airport?
With so many great airlines to pick from, you should be able to find the perfect flight from SEA to DIA airport in just a few clicks. Here are some of the top carriers that fly between these airports:

  • United Airlines - (UA) with 143 monthly flights
  • Southwest Airlines - (WN) with 91 monthly flights
  • Delta - (DL) with 91 monthly flights
  • Alaska Airlines - (AS) with 82 monthly flights

Are Sea-Tac Airport to Denver Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices from SEA to Denver Intl. Airport (DEN) are available up to 12 months before departure on Expedia. And although you may occasionally nab great last-minute deal, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid ending up with the dreaded middle seat! We're always updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
CA $132
Distance
1635 km
Average flight time
3 hours 38 mins

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