Cheap Flights from Seattle to Denver
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Flights from Seattle to Denver
Airlines Flying from Seattle to Denver
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Flight deals from Seattle to Denver
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Round-trip
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One way
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Cheapest nonstop
SEA 07:102h 47mDirectDEN 10:57Seattle - Denver | Tue, Aug 12 | Delta Air Lines
DEN 06:352h 54mDirectSEA 08:29Denver - Seattle | Tue, Aug 19 | Delta Air Lines£89 £20356% OFF56% OFF£203 £89 -
SEA 06:252h 49mDirectDEN 10:14Seattle - Denver | Sat, Jul 19 | Frontier Airlines
DEN 21:363h 6mDirectSEA 23:42Denver - Seattle | Tue, Jul 22 | Frontier Airlines£89 £20356% OFF56% OFF£203 £89 -
SEA 20:172h 42mDirectDEN 23:59Seattle - Denver | Tue, Aug 12 | Alaska Airlines
DEN 06:003h 1mDirectSEA 08:01Denver - Seattle | Tue, Aug 19 | Alaska Airlines£94 £20354% OFF54% OFF£203 £94 -
SEA 18:002h 44mDirectDEN 21:44Seattle - Denver | Wed, Jul 2 | Delta Air Lines
DEN 06:402h 54mDirectSEA 08:34Denver - Seattle | Wed, Jul 9 | Delta Air Lines£9653% OFF£203 £96
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SEA 06:252h 47mDirectDEN 10:12Seattle - Denver | Tue, Jun 17 | Frontier Airlines
DEN 21:363h 8mDirectSEA 23:44Denver - Seattle | Sat, Jun 21 | Frontier Airlines£15424% OFF£203 £154
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SEA 06:252h 47mDirectDEN 10:12Seattle - Denver | Wed, Jun 18 | Frontier Airlines
DEN 21:363h 8mDirectSEA 23:44Denver - Seattle | Sat, Jun 21 | Frontier Airlines£18410% OFF£203 £184
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SEA 06:252h 47mDirectDEN 10:12Seattle - Denver | Sat, Jun 14 | Frontier Airlines
DEN 16:443h 9mDirectSEA 18:53Denver - Seattle | Sat, Jun 14 | Frontier Airlines£1916% OFF£203 £191
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SEA 18:002h 44mDirectDEN 21:44Seattle - Denver | Tue, Jul 15 | Delta Air Lines
DEN 18:106h 49m1 stopsSEA 23:59Denver - Seattle | Tue, Jul 22 | Delta Air Lines£9155% OFF£203 £91
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SEA 13:307h 41m1 stopsDEN 22:11Seattle - Denver | Wed, Aug 6 | Delta Air Lines
DEN 19:493h 5mDirectSEA 21:54Denver - Seattle | Wed, Aug 13 | Delta Air Lines£9255% OFF£203 £92
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SEA 13:305h 25m1 stopsDEN 19:55Seattle - Denver | Tue, Aug 5 | Delta Air Lines
DEN 19:493h 5mDirectSEA 21:54Denver - Seattle | Tue, Aug 12 | Delta Air Lines£9255% OFF£203 £92
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SEA 13:0017h 25m1 stopsDEN Invalid DateSeattle - Denver | Mon, Jun 16 | Normal Airline
DEN 15:006hDirectSEA 16:00Denver - Seattle | Wed, Jun 18 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
SEA 19:482h 53mDirectDEN 23:41Seattle - Denver | Thu, Jun 19 | Frontier Airlines£44 £13167% OFF67% OFF£131 £44
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SEA 07:102h 47mDirectDEN 10:57Seattle - Denver | Tue, Aug 12 | Delta Air Lines£45 £13166% OFF66% OFF£131 £45
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SEA 06:252h 49mDirectDEN 10:14Seattle - Denver | Sat, Jul 5 | Frontier Airlines£45 £13166% OFF66% OFF£131 £45
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SEA 20:172h 42mDirectDEN 23:59Seattle - Denver | Tue, Aug 12 | Hawaiian Airlines£4764% OFF£131 £47 -
SEA 20:172h 42mDirectDEN 23:59Seattle - Denver | Tue, Aug 12 | Alaska Airlines£4864% OFF£131 £48
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SEA 06:252h 49mDirectDEN 10:14Seattle - Denver | Tue, Jul 29 | Frontier Airlines£7444% OFF£131 £74
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SEA 19:482h 53mDirectDEN 23:41Seattle - Denver | Sat, Jun 21 | Frontier Airlines£7543% OFF£131 £75
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SEA 06:252h 47mDirectDEN 10:12Seattle - Denver | Wed, Jun 18 | Frontier Airlines£9925% OFF£131 £99
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SEA 19:482h 53mDirectDEN 23:41Seattle - Denver | Sat, Jun 14 | Frontier Airlines£1236% OFF£131 £123
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SEA 13:307h 41m1 stopsDEN 22:11Seattle - Denver | Tue, Aug 5 | Delta Air Lines£4864% OFF£131 £48
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SEA 13:0017h 25m1 stopsDEN Invalid DateSeattle - Denver | Mon, Jun 16 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Information from Seattle to Denver
| Cheapest one-way flight price | £43 |
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| Cheapest return ticket price | £88 |
| Off-season travel month | April |
| Peak season for travel | June |
| Flight distance | 1,644.78km |
| Average flight time | 2 hours 46 minutes |
| Popular airline | Alaska Airlines |
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
FAQ
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When are flight tickets from Seattle (SEA) to Denver (DEN) the cheapest?
Airlines adjust prices for flights from Seattle to Denver based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much are flights from Seattle (SEA) to Denver (DEN) cost?
According to Trip.com's data, the lowest price is around £164. -
How long is the flight from Seattle (SEA) to Denver (DEN)?
It takes about 2 hours 46 minutes to fly from Seattle (SEA) to Denver (DEN). -
What are the most popular airlines that fly from Seattle (SEA) to Denver (DEN)?
Airlines with flights from Seattle (SEA) to Denver (DEN): KLM, Southwest Airlines, United Airlines, Singapore Airlines, All Nippon Airways, Icelandair, Hawaiian Airlines and Frontier Airlines. -
How many airports in Denver (DEN)?
There are 2 airport(s) in Denver (DEN): Rocky Mountain Metropolitan Airport and Denver International Airport.
How to find a cheap flight from Seattle to Denver
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Denver. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest flight from Seattle to Denver.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Seattle to Denver over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Thu, Jun 19, with one-way flights priced at just £44.
Compare cheap flight deals from Seattle to Denver across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Seattle to Denver. The cheapest airline for this route is Frontier Airlines.
Set up a Price Alert
By setting up a Price Alert for your journey from Seattle to Denver, you can easily keep an eye on ticket prices without having to check every day.
Don't miss out on cheap flight deals and promo codes from Seattle to Denver.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from Seattle to Denver and snag some exclusive deals just for you.
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