Cheap flights from Seattle to Denver

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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 Tuesday and return on a Tuesday

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

SEA - DEN
Price
C$ 158 - C$ 276
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

Round-trip from

C$ 158

From Seattle to Denver

One-way from

C$ 93

One-way flight 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 15% on your flight compared to booking on days when demand is much higher.

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 20% versus a flight in the morning.

Cheap flights from Seattle to Denver in December, January 2021

The best prices found for SEA to DEN flights for December, January
10 Dec - 13 Dec
C$ 71pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
10 Dec - 13 Dec
C$ 110pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
9 Dec - 13 Dec
C$ 125pp
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
10 Dec - 13 Dec
C$ 71pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
10 Dec - 13 Dec
C$ 110pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
9 Dec - 13 Dec
C$ 125pp
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
10 Dec - 13 Dec
C$ 71pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
26 Feb - 1 Mar
C$ 87pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
9 Dec - 13 Dec
C$ 125pp
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
10 Dec - 13 Dec
C$ 71pp
SEA
Seattle/Tacoma Intl
Frontier
Direct
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
10 Dec - 13 Dec
C$ 110pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Direct
SEA
Seattle/Tacoma Intl
9 Dec - 13 Dec
C$ 125pp
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
4:15 p.m. - 9:54 a.m.
Frontier
2 stops
16h 39m
SEA - DEN
Frontier
C$ 94
Gotogate
1:30 a.m. - 8:24 a.m.
Alaska Airlines
3 stops
29h 54m
SEA - DEN
Alaska Airlines
C$ 315
7:45 p.m. - 5:36 p.m.
Delta
3 stops
20h 51m
SEA - DEN
Delta
C$ 488
Delta

Related info for your journey

Useful info, stats and facts about Seattle to Denver flights.

Flight FAQs

From Seattle to Denver

Can I find flights from Seattle to Denver for under C$ 129 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under C$ 129. The cheapest flight booked recently is on Frontier for just C$ 71, but on average you can expect to pay C$ 147.

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.

Are there direct flights from Seattle to Denver for under C$ 129 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Denver under C$ 129. A good price for a direct flight from Seattle to Denver is less than C$ 185.

Are there last-minute flights available from Seattle to Denver for under C$ 129?

There are currently 20+ open flights from Seattle to Denver within the next 7 days for less than C$ 129.

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

On average 2 flights depart from Seattle/Tacoma Intl to Denver Intl per day.
Evening (6pm - Midnight) - 100% 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 greater than that of Denver. We can gather that this will continue over the next 22 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 32m. Fly via Frontier, United Airlines, or Delta 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$ 72, was found to be the cheapest airline from Seattle to Denver.Alternate airlines to your destination round-trip include Alaska Airlines and Spirit Airlines. Users have found that Frontier is 64% 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$ 37 on Frontier. Other airlines that offer cheap prices include Delta from C$ 64 and Alaska Airlines from C$ 198 one-way.

Destination information for Denver

Things to know before you go. Useful info for your trip from Seattle to Denver
Flight duration
2h 51m
Average temperature for December in Denver
7.0 °C
Avg rainfall for December in Denver
18.0 mm

Airports servicing Seattle

Airports servicing Denver

Top 4 airlines 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

Afternoon Noon to 6 PM 45% of flight departures
Morning 6 AM to noon 24% of flight departures
Early morning Midnight to 6 AM 22% of flight departures
Evening 6 PM to midnight 9% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Denver
Sunday
19 daily flights
Monday
18 daily flights
Tuesday
15 daily flights
Wednesday
18 daily flights
Thursday
23 daily flights
Friday
22 daily flights
Saturday
9 daily flights
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