How many flights from Seattle to Denver are non-stop?

In the trailing 90 days, approximately 37.4% of flights from Seattle to Denver were non-stop. For flights that include stopovers, the median number of stopovers observed was 1. This indicates that a significant portion of flights on this route involve at least one connection.

How many hours is the flight from Seattle to Denver?

A direct flight from Seattle to Denver typically takes about 2 hours and 50 minutes. This is based on a distance of 1645 kilometers. Flights with one stop, however, can take considerably longer, with a median duration of 10 hours and 20 minutes.

How often do cheap flights from Seattle to Denver come up?

Historically, cheap flights from Seattle to Denver come up frequently. This route is classified as having frequent deals, indicating that travelers often have opportunities to find lower prices. This trend has been observed across the trailing quarter.

Flights From Seattle

To Denver

Cheap Flights from Seattle to Denver

Browse current best options from Seattle. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Seattle

RatePunk searches hundreds of travel sites at once for deals on flights to Denver

Prices updated 2 days ago

444 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Aug 9, 2026.)

Today’s best flight deals from Seattle to Denver

Explore current cheapest deals departing from Seattle to Denver

2026-08-25 – 2026-08-26
SEA - Denver
67% AI deal score
$149
$107
Round trip
2026-08-25 – 2026-08-27
SEA - Denver
67% AI deal score
$149
$107
Round trip
2026-08-29 – 2026-08-30
SEA - Denver
66% AI deal score
$143
$112
Round trip
2026-11-10 – 2026-11-16
SEA - Denver
45% AI deal score
$114
$116
Round trip
2026-11-10 – 2026-11-17
SEA - Denver
45% AI deal score
$114
$116
Round trip
2026-08-24 – 2026-08-28
SEA - Denver
66% AI deal score
$149
$119
Round trip
2026-11-10 – 2026-11-14
SEA - Denver
45% AI deal score
$118
$121
Round trip
2026-09-15 – 2026-09-22
SEA - Denver
44% AI deal score
$112
$122
Round trip
2026-10-13 – 2026-10-27
SEA - Denver
44% AI deal score
$100
$122
Round trip
2026-10-16 – 2026-10-19
SEA - Denver
45% AI deal score
$118
$122
Round trip

Seattle to Denver: Overview

Insights for flights from Seattle to Denver

Most itineraries for flights from Seattle to Denver connect at least once, with only 37.4% of recent fares being non-stop. For connecting flights, the typical number of stopovers is one. This means you'll often find yourself making a stop on your journey, which can influence both travel time and overall cost.

When considering cheap flights from Seattle to Denver, fares typically range from $230–$497, with a median price of $310. Right now, current fares are below the typical level, and only 2% of recent fares were classified as a good price. New deals appear almost daily, offering frequent opportunities to find better rates.

If you are wondering when is the cheapest time to fly from Seattle to Denver, the data indicates that April is the most affordable month, with a median fare of just $118. Other cost-effective months include November, with a median fare of $192, and February, where the median fare is $225. Planning your trip during these months could lead to significant savings.

A typical journey from Seattle to Denver takes approximately 2h 50m, including connections. While the non-stop flight time is also 2h 50m, the median connecting journey extends to 12h 55m. This significant difference highlights the impact of layovers on overall travel duration for this route.

The distance between Seattle and Denver is approximately 1645 kilometers, classifying this as a medium-haul route. This distance typically involves several hours of flight time, often with a connection, making it a substantial journey between the two cities.

How much is a round trip from Seattle to Denver

Regular price: $108 - $228

Prices are currently below the regular range for flights from Seattle to Denver.

The regular price range for flights from Seattle to Denver is $108 to $228. The current lowest deal is $107 with Frontier Airlines for travel from Aug 25-Aug 26.

now $107

Low $108

High $228

The cheapest time to fly from Seattle to Denver

The cheapest month to fly from Seattle to Denver is February, with a median price of $149. The most expensive month is July, with a median price of $422. Prices are generally lower from January to December.

February

Cheapest

Flights from $149

July

Most Expensive

Flights from $422

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Denver

Frontier Airlines

Last-minute flights going from Seattle to Denver

Sun, Aug 9

⌛ Last-Minute

SEA - Denver

Seattle (SEA) - Denver (DEN)

Frontier Airlines

$491

$349

One-way

Mon, Aug 10

⌛ Last-Minute

SEA - Denver

Seattle (SEA) - Denver (DEN)

Frontier Airlines

$480

$349

One-way

Tue, Aug 11

⌛ Last-Minute

SEA - Denver

Seattle (SEA) - Denver (DEN)

Frontier Airlines

$373

$264

One-way

Tue, Aug 11

⌛ Last-Minute

SEA - Denver

Seattle (SEA) - Denver (DEN)

Frontier Airlines

$345

$268

One-way

Wed, Aug 12

⌛ Last-Minute

SEA - Denver

Seattle (SEA) - Denver (DEN)

Frontier Airlines

$373

$248

One-way

Wed, Aug 12

⌛ Last-Minute

SEA - Denver

Seattle (SEA) - Denver (DEN)

Frontier Airlines

$460

$329

One-way

Biggest price drops on these dates for flights from Seattle to Denver

5 nights

Aug 13 - Aug 18

$408 → $242

41%

2 nights

Aug 9 - Aug 11

$491 → $349

29%

3 nights

Aug 13 - Aug 16

$460 → $329

29%

3 nights

Aug 12 - Aug 15

$460 → $329

29%

Popular Airports to fly from Seattle to Denver

Seattle - Denver route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from Seattle to Denver are below the typical level, with a median price of $310.

📅 Best time to fly

April, November, and February are historically cheapest

Historically, April ($118), November ($192), and February ($225) offer the lowest median prices.

⏱️ Flight duration

Direct flights average 2h 50m

The typical direct flight from Seattle to Denver takes 2h 50m, covering 1645 km.

✈️ Airlines & availability

Frontier Airlines offers direct flights

Frontier Airlines provides direct flights on this route, with connecting flights also available.

🏆 Airline highlight

Frontier Airlines has a deal for $107

Frontier Airlines offers a deal for $107 from Seattle to Denver, valid August 25-August 26.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from Seattle to Denver are frequent, appearing often over 30 days.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a good option for flights from Seattle to Denver.

📍 ~18 km from city center (reachable by car, train, or bus)

💸 Flights from ~$55

Denver main airports to arrive at

Denver International (DEN)

Cheapest

Denver International Airport is the primary arrival airport for flights to Denver.

📍 ~30 km from city center (reachable by car)

💸 Flights from ~$55

Airports nearby Denver used as alternative

Colorado Springs (COS)

Cheapest

Colorado Springs is a reliable alternative with robust flight schedules and multiple major carriers.

📍 ~110 km from Denver (reachable by car)

💸 Flights from ~$269

Frequently Asked Questions About Flights to Denver

Historically, the best time to book flights from Seattle to Denver for the cheapest prices is typically 28-59 days before departure. During this period, the average price observed was $347. Booking within 0-6 days of departure typically sees a significantly higher average price of $532. Even booking 60+ days out tends to be more expensive, with an average price of $428.

Across the trailing quarter, a good price for a flight from Seattle to Denver is considered to be $230 or less. The median price for this route historically stands at $310. Prices can go higher, with 75% of fares observed at $497 or less in the trailing 90 days.

Historically, April has been the cheapest month to fly from Seattle to Denver, with a median price of $118. November also offers competitive prices, with a median of $192. The annual median price for this route is $310, indicating that these months offer substantial savings compared to the yearly average.

Related routes

More routes from Seattle

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Flights to Denver from other cities

Flights from Albuquerque to Denver Flights from Anchorage to Denver Flights from Atlanta to Denver Flights from Austin to Denver Flights from Billings to Denver Flights from Salt Lake City to Denver Flights from San Francisco to Denver Flights from San Jose to Denver Flights from St. Louis to Denver Flights from Tampa to Denver Flights from Tucson to Denver Flights from Washington, D.C. to Denver

Seattle to Denver: Overview

Insights for flights from Seattle to Denver

How much is a round trip from Seattle to Denver

Regular price: $108 - $228

Prices are currently below the regular range for flights from Seattle to Denver.

The regular price range for flights from Seattle to Denver is $108 to $228. The current lowest deal is $107 with Frontier Airlines for travel from Aug 25-Aug 26.

now $107

Low $108

High $228

The cheapest time to fly from Seattle to Denver

February

Cheapest

Flights from $149

July

Most Expensive

Flights from $422

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec