Cheap flights from Seattle to Denver

Round-trip
Economy
Seattle (SEA)
Denver (DEN)
Depart
Return
Any month
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The best prices from Seattle to Denver are usually found in January or April, booked 18 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

How to find the cheapest flight from
Seattle (SEA) to Denver (DEN)

All the information you need to plan the best SEA to DEN flight in 2021: compare Seattle to Denver flight prices with the expected peak season, weather and rainfall in Denver.
SEA - DEN
Price
C$ 150 - C$ 262
DEN
Temperature
7 - 32 °C
DEN
Rainfall
12 - 69 mm

Popular in

December

High demand for flights, 27% potential price rise

Cheapest in

January

Best time to find cheap flights, 22% potential price drop

Average price

C$ 205

Average for round-trip flights in May 2021

Round-trip from

C$ 150

From Seattle to Denver

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Denver?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 25% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Seattle to Denver?

Find a great deal and save up to 26% by booking at least 48 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Denver within the next two weeks, with the cheapest ticket starting at C$ 683.

What is the cheapest month to fly from Seattle to Denver?

Due to multiple factors, expect to potentially pay more when booking in February. For low rates, August can be a great choice for travel to Denver. Flights to Denver from Seattle in August are about C$ 604 on average during August, but can be found for as low as C$ 360.

When is the cheapest time to fly from Seattle to Denver (SEA - DEN)?

When flying from Seattle to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 24% versus a flight in the evening.

Cheap flights from Seattle to Denver in May, June 2021

The best prices found for SEA to DEN flights for May, June
12 May - 15 May
C$ 70pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
8 May - 11 May
C$ 119pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
12 May - 19 May
C$ 144pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Seattle to Denver 2021 flight deals

Cheap flights to Denver from Seattle found for this year
12 May - 15 May
C$ 70pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
8 May - 11 May
C$ 119pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
12 May - 19 May
C$ 144pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Direct flights to Denver from Seattle

Save time with Seattle to Denver direct flight deals
12 May - 15 May
C$ 70pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
12 May - 15 May
C$ 119pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
12 May - 19 May
C$ 144pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Denver

Late deals on round-trip flights to Denver from Seattle, departing today and this week
12 May - 15 May
C$ 70pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
12 May - 15 May
C$ 119pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
12 May - 19 May
C$ 144pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
DEN
Denver Intl
DEN
Denver Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

One-way flights to Denver from Seattle

The cheapest one-way flights from Seattle to Denver
2:20 p.m. - 6:46 a.m.
Spirit Airlines
1 stop
15h 26m
SEA - DEN
Spirit Airlines
C$ 219
Spirit
3:25 a.m. - 7:20 p.m.
Delta
2 stops
14h 55m
SEA - DEN
Delta
C$ 237
Delta
7:00 p.m. - 6:18 p.m.
Alaska Airlines
2 stops
22h 18m
SEA - DEN
Alaska Airlines
C$ 249
Alaska Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Denver</span> flights.

Flight FAQs

From Seattle to Denver

What airports do I use to fly from Seattle to Denver?

Booking a flight from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) is your only option if you wish to fly from Seattle to Denver. On a typical day, there are 19 flights from Seattle/Tacoma Intl to Denver Intl, all of which are around 2h 47m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Seattle/Tacoma Intl to Denver.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to Denver Intl to control the spread of COVID-19?

Alaska Airlines and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travellers booking flights from Seattle/Tacoma Intl to Denver Intl include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially-distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Seattle/Tacoma Intl to Denver Intl have flexible cancellations due to COVID-19?

Frontier, Delta, and Alaska Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Seattle to Denver for under C$ 123 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under C$ 123. The cheapest flight booked recently is on Frontier for just C$ 70, but on average you can expect to pay C$ 179.

Are there direct flights from Seattle to Denver for under C$ 123 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Denver under C$ 123. A good price for a direct flight from Seattle to Denver is less than C$ 211.

Are there last-minute flights available from Seattle to Denver for under C$ 123?

There are currently 20+ open flights from Seattle to Denver within the next 7 days for less than C$ 123.

What days are direct flights available from Seattle to Denver?

Direct flights are available for this route on the following days: Sunday, Monday, Thursday, Friday.

How popular is this flight route?

Within the past month, 64 users have taken a look at flights from Seattle/Tacoma Intl to Denver Intl.

How many flights depart from Seattle to Denver on average per day?

On average 6 flights depart from Seattle/Tacoma Intl to Denver Intl per day.
Early Morning (Midnight to 6am) - 17% of flight departures
Morning (6am - Noon) - 17% of flight departures
Evening (6pm - Midnight) - 67% of flight departures

Does it rain more in Seattle or Denver?

When travelling, we recommend packing in preparation to handle common weather conditions. The rainfall in Seattle is typically similar to Denver. We can gather that this will continue over the next 17 days.

Is Seattle weather warmer or cooler than Denver?

You can imagine temperatures to be in the 32 °C range in July. The weather in Denver is generally hotter than Seattle's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

How long is the flight from Seattle to Denver?

There are many flights that can get you from Seattle to Denver in 2h 35m. Fly via Delta, Alaska Airlines, or Frontier to get the fastest option. There are 1654 km between Seattle and Denver. Generally, flights for this route are direct.

What are the cheapest airlines to flying from Seattle to Denver round-trip?

Frontier, at C$ 70, was found to be the cheapest airline from Seattle to Denver.Alternate airlines to your destination round-trip include Alaska Airlines and Delta. Users have found that Frontier is 63% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Seattle to Denver one-way?

One-way options have recently been found by users for as low as C$ 61 on Alaska Airlines. Other airlines that offer cheap prices include Delta from C$ 98 and Spirit Airlines from C$ 219 one-way.

Destination information for Denver

Things to know before you go - useful duration and weather info for your trip from Seattle to Denver.
Flight duration
2h 51m
Average temperature for May in Denver
23.0 °C
Avg rainfall for May in Denver
48.0 mm

Airports servicing Seattle

Airports servicing Denver

Top 4 airlines flying from Seattle to Denver

The chart below displays the airlines Cheapflights users travelling from Seattle to Denver choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
C$ 49 C$ 137 No cancel fee 62%
Search Frontier flights
Alaska Airlines
C$ 68 C$ 159 No cancel fee 75%
Search Alaska Airlines flights
Delta
C$ 74 C$ 167 No cancel fee N/A
Search Delta flights
United Airlines
C$ 117 C$ 226 No cancel fee 69%
Search United Airlines flights

Hourly flight availability from Seattle to Denver

See what time of day planes typically take off from Seattle towards Denver.
Afternoon Noon to 6 PM 36% of flight departures
Morning 6 AM to noon 30% of flight departures
Early morning Midnight to 6 AM 17% of flight departures
Evening 6 PM to midnight 17% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Denver
See how many times per day planes take to the skies headed from Seattle to Denver.
Sunday
21 daily flights
Monday
22 daily flights
Tuesday
16 daily flights
Wednesday
25 daily flights
Thursday
16 daily flights
Friday
20 daily flights
Saturday
14 daily flights
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