Cheap flights from Seattle to Denver (SEA - DEN)

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The best prices from Seattle/Tacoma Intl to Denver Intl are usually found in January or April, booked 18 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

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
$122 - $213
DEN
Temperature
30.2 - 73.4 °F
DEN
Precipitation
0.5 - 2.3 inches

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

$122

From Seattle/Tacoma Intl to Denver Intl

One-way from

$61

One-way flight from Seattle/Tacoma Intl to Denver Intl

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?

Saturday flights are found to be more expensive to fly from Seattle to Denver. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Denver.

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

Travelers have found it’s best to book a flight 18 days in advance to save up to 14% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 18 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Denver 1-2 weeks in advance for as low as $146, or $172 for flights within the next 24 hours.

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

A simple way to save on the total cost of your ticket is to fly from Seattle to Denver at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

Cheap flights from Seattle to Denver in October, November 2021

The best prices found for SEA to DEN flights for October, November
30 Oct - 30 Oct
$69pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Oct - 30 Oct
$74pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Oct - 30 Oct
$75pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Denver 2021 flight deals

Cheap flights to Denver from Seattle found for this year
30 Oct - 30 Oct
$69pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Oct - 30 Oct
$74pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Oct - 30 Oct
$75pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

Non-stop flights to Denver from Seattle

Save time with Seattle to Denver direct flight deals
11 Nov - 14 Nov
$79pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
28 Oct - 5 Nov
$81pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
11 Nov - 22 Nov
$83pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
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
19 Oct - 22 Oct
$76pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
19 Oct - 20 Oct
$79pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
23 Oct - 26 Oct
$83pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Denver Intl from Seattle

The cheapest one-way flights from Seattle to Denver
2:41 am - 6:23 am
Alaska Airlines
Nonstop
2h 42m
SEA - DEN
Alaska Airlines
$61
mytrip.com
6:09 am - 6:29 pm
Frontier
1 Stop
11h 20m
SEA - DEN
Frontier
$70
JustFly
7:15 am - 12:35 pm
Spirit Airlines
3 Stops
28h 20m
SEA - DEN
Spirit Airlines
$72
FareScan

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?

If you wish to fly to Denver from Seattle, then you need to book flights from Seattle/Tacoma Intl to Denver Intl. There are 24 flights from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) per day to choose from. Flights to Denver from Seattle/Tacoma Intl are available from 9 different airlines, which means you should have some options if you want to compare airfare deals. 2h 32m is how long a nonstop flight from Seattle to Denver Intl typically takes.

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

Delta, Frontier, and United 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 $100 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under $100. The cheapest flight booked recently is on Spirit Airlines for just $69, but on average you can expect to pay $83.

Are there nonstop flights from Seattle to Denver for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Denver under $100. A good price for a nonstop flight from Seattle to Denver is less than $94.

Are there last-minute flights available from Seattle to Denver for under $100?

There are currently 20+ open flights from Seattle to Denver within the next 7 days for less than $100.

What days are nonstop flights available from Seattle to Denver?

Nonstop flights can be found on the following days: Friday, Saturday.

How popular is this Seattle to Denver flight route?

Within the past month, 266 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, you can expect to see 3 flights from Seattle to Denver a day.
Early Morning (Midnight to 6am) - 33% of flight departures
Afternoon (Noon - 6pm) - 67% of flight departures

How long is the flight from Seattle to Denver?

There are many flights that can get you from Seattle to Denver in 2h 39m. Fly via Spirit Airlines or Frontier to get the fastest option. The distance between Seattle and Denver is about 1028 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Currently priced at $69, Spirit Airlines will fly you from Seattle to Denver and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Frontier for as low as $79. These flights start at 55% lower than the current average price 3 months from now.

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

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $35. Users have also found prices from $41 and $43 on Frontier and Alaska Airlines, respectively.

What are the cheapest flights from Seattle to Denver?

Looking at all options, your cheapest flight can be booked for $58. While the most popular route (Seattle/Tacoma Intl - Denver Intl) can be booked for $75 on average our data indicates $295 when flying from Seattle to Denver

What are the most popular airlines that fly from Seattle to Denver?

When booking a flight from Seattle to Denver, you may want to consider flying on Major Airline, Endeavor Airlines or American Airlines as they are the most popular for this route.

What are the most reliable airlines from Seattle to Denver?

No one likes to see their flight delayed. When booking a flight from Seattle to Denver consider choosing ANA (100%), Air France (88%) or SkyWest Airlines (87%) as they are the most reliable in getting you off to your destination on time.

COVID Restrictions

View COVID Travel Restrictions for Denver, CO

Do I need a COVID test to fly to Denver from Seattle?

Information is based on travel restrictions for travel to Denver Intl within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Denver Intl.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Denver Intl.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Denver Intl.

Do I need a test to fly back to Seattle from Denver?

Returning to Seattle/Tacoma Intl from Denver Intl

COVID-19 testing requirements
Visitors from Denver Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Denver, CO

Alternative routes for Seattle to Denver

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Denver

Things to know before you go - useful duration and weather info for your trip from Seattle to Denver.
Flight duration from SEA to DEN
2h 53m
Average temperature for October in Denver
66.2 °F
Avg rainfall for October in Denver
0.9 ″

Airports servicing Seattle

Airports servicing Denver

Top 7 airlines flying from Seattle/Tacoma Intl to Denver Intl

The chart below displays the airlines Cheapflights users traveling 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
American Airlines
$57 $196 No cancel fee 71%
Frontier
$58 $162 No cancel fee 62%
Delta
$74 $184 No cancel fee N/A
Alaska Airlines
$78 $202 No cancel fee 75%
United Airlines
$83 $216 No cancel fee 69%
Spirit Airlines
$94 $227 No cancel fee 65%
Southwest
$166 $340 No cancel fee 63%

Hourly flight availability from Seattle to Denver

See what time of day planes typically take off from Seattle towards Denver.
Morning 6 AM to noon 56% of SEA to DEN departures
Afternoon Noon to 6 PM 28% of SEA to DEN departures
Evening 6 PM to midnight 12% of SEA to DEN departures
Early morning Midnight to 6 AM 4% of SEA to DEN 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
18 daily flights
Monday
23 daily flights
Tuesday
28 daily flights
Wednesday
28 daily flights
Thursday
29 daily flights
Friday
25 daily flights
Saturday
17 daily flights
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