Cheap Flights from Seattle to Denver

Cheapest flights from Seattle to Denver

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Seattle to Denver. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$32

Frontier Airlines

Direct flight

2h 51m

02/01/2026

The cheapest one-way flight from Seattle to Denver departs on 02/01/2026, is operated by Frontier Airlines and costs $32

Cheapest round trip flight

$188

Frontier Airlines

Direct flight

6h 2m

12/11/2025

The cheapest roundtrip flight from Seattle to Denver departs on 12/11/2025, is operated by Frontier Airlines and costs $188

The fastest flight

2h 30m

Fastest flight from Seattle to Denver takes 2h 30m

Direct flights

Several times a week

There are direct flights on this route 4 days a week: Su, We, Th, and Sa

Earliest flight

5:00 AM

Latest flight

8:14 PM

Direct flights count

142

Distance

1641km

Timezone difference

1h

The distance between Seattle and Denver is 1641km (1017 miles). There are 142 direct flights from Seattle to Denver. The time difference between Seattle and Denver is 1h. Flights from Seattle begin at 5:00 AM. The latest flight from Seattle departs at 8:14 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Seattle to Denver by month

The minimum one-way ticket price from Seattle to Denver is $32 (February 2026), while the maximum is $65 (December 2025). On average, a ticket costs $49–$65.

February 2026

Lowest price

on average:

$32

December 2025

Highest price

on average:

$65

Avg Price

Airlines operating on route

The Seattle — Denver route is served by a wide range of airlines: 4 in total, including United Airlines, Frontier Airlines, Alaska Airlines, and Southwest Airlines. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $32. Our service helps compare all available offers within seconds and choose the most convenient option. You can filter flights by price, departure time, or baggage rules to make your trip as comfortable as possible. With so many airlines, there’s always a chance to catch special promotions and save.

Starting at $126

Starting at $32

Starting at $80

Starting at $65

Direct Flights from Seattle to Denver

A direct flight is the most convenient and comfortable way to fly from Seattle to Denver, despite the fact that sometimes flights with transfers can cost significantly less.

Seattle — Denver

SEA — DEN

12/10/2025

Departure

Direct flight

UA2269

Starting at $208

Seattle — Denver

SEA — DEN

12/13/2025

Departure

Direct flight

F93406

Starting at $152

Seattle — Denver

SEA — DEN

12/22/2025

Departure

Direct flight

UA1263

Starting at $256

Seattle — Denver

SEA — DEN

12/24/2025

Departure

Direct flight

UA757

Starting at $253

Seattle — Denver

SEA — DEN

12/30/2025

Departure

Direct flight

UA1479

Starting at $180

Seattle — Denver

SEA — DEN

02/02/2026

Departure

Direct flight

AS602

Starting at $80

Seattle — Denver

SEA — DEN

06/20/2026

Departure

Direct flight

AS682

Starting at $227

Seattle — Denver

SEA — DEN

09/12/2026

Departure

Direct flight

AS682

Starting at $179

Seattle — Denver

SEA — DEN

09/17/2026

Departure

Direct flight

AS620

Starting at $197

Schedule of direct flights from Seattle to Denver

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Seattle to Denver:

Unable to find information about the schedule of direct flights from

Seattle airports overview

Boeing Field International Airport

•

BFI

8km

Seattle-Tacoma International Airport

•

SEA

19km

•

Denver airports overview

Centennial Airport

•

APA

1km

Denver International Airport

•

DEN

30km

•

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

How much is the cheapest flight ticket from Seattle to Denver?

The cheapest flight ticket from Seattle to Denver according to data for the last 48 hours costs $32

When is the best time to buy air tickets on the route Seattle — Denver?

Often the best time to buy tickets from Seattle to Denver is 2 months before departure.

When is the cheapest time of year to fly from Seattle to Denver?

Based on statistics over the past years, the lowest prices for flights from Seattle to Denver can be found flying in these months: February, December.

How long does it take to fly from Seattle to Denver?

The fastest flights from Seattle to Denver start from 2 hours 30 minutes in the air.

Which airline can fly direct from Seattle to Denver?

The following airlines operate direct flights on the route Seattle — Denver: United Airlines, Frontier Airlines, Alaska Airlines

Special offers and sales on air tickets from Seattle to Denver

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Seattle to Denver

Alternative routes

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Cheapest one way flight

$32

Frontier Airlines

Direct flight

2h 51m

02/01/2026

The cheapest one-way flight from Seattle to Denver departs on 02/01/2026, is operated by Frontier Airlines and costs $32

Cheapest round trip flight

$188

Frontier Airlines

Direct flight

6h 2m

12/11/2025

The cheapest roundtrip flight from Seattle to Denver departs on 12/11/2025, is operated by Frontier Airlines and costs $188

The fastest flight