Cheap flights from Seattle to Denver (SEA - DEN)

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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 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
44.6 - 89.6 °F
DEN
Rainfall
0.5 - 2.7 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 to Denver

One-way from

$59

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?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Denver. Check prices with Cheapflights to find a great deal for your trip.

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

Travelers have found it’s best to book a flight 14 days in advance to save up to 12% 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 14 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 $88, or $106 for flights within the next 24 hours.

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

Flights from Seattle to Denver lean towards being more expensive in December. Prices are generally better when you fly from Seattle to Denver in August, with the cheapest ticket starting at $36.

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

It’s optimal to fly from Seattle to Denver at noon. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the morning.

Cheap flights from Seattle to Denver in June, July 2021

The best prices found for SEA to DEN flights for June, July
16 Jul - 20 Jul
$90pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 Jun - 22 Jun
$100pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
17 Jun - 23 Jun
$102pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Denver 2021 flight deals

Cheap flights to Denver from Seattle found for this year
16 Jul - 20 Jul
$90pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 Jun - 22 Jun
$100pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
17 Jun - 23 Jun
$102pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Denver from Seattle

Save time with Seattle to Denver direct flight deals
16 Jul - 20 Jul
$90pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 Jun - 22 Jun
$100pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 Jun - 22 Jun
$103pp
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
18 Jun - 22 Jun
$100pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
17 Jun - 23 Jun
$102pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
18 Jun - 21 Jun
$103pp
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 from Seattle

The cheapest one-way flights from Seattle to Denver
3:10 pm - 6:45 pm
Delta
Nonstop
2h 35m
SEA - DEN
Delta
$59
Delta
2:20 pm - 3:41 pm
Spirit Airlines
1 Stop
24h 21m
SEA - DEN
Spirit Airlines
$73
Gotogate
2:51 pm - 6:34 pm
Alaska Airlines
Nonstop
2h 43m
SEA - DEN
Alaska Airlines
$78
mytrip.com

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

Are flight prices decreasing from Seattle to Denver due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Denver for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

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 is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers 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?

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.

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 26 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 31m is how long a nonstop flight from Seattle to Denver Intl typically takes.

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 Frontier for just $90, but on average you can expect to pay $111.

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 $113.

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?

You can find nonstop flights on the following days: Monday, Tuesday, Wednesday, Thursday.

How popular is this flight route?

The Seattle/Tacoma Intl to Denver Intl flight path was viewed by 266 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

Per day, 13 flights depart from Seattle/Tacoma Intl to Denver Intl on average.
Morning (6am - Noon) - 23% of flight departures
Afternoon (Noon - 6pm) - 54% of flight departures
Evening (6pm - Midnight) - 23% of flight departures

Does it rain more in Seattle or Denver?

In Seattle, there will be less rainfall in Seattle compared to Denver over the next 15 days.

Is Seattle weather warmer or cooler than Denver?

Temperatures around the 90 °F's can be experienced in July. The weather in Denver is hotter than in Seattle. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Seattle to Denver?

Airlines like United Airlines and Frontier fly from Seattle to Denver in about 2h 38m. The time it takes to get you to your destination is usually consistent. There are 1028 mi between Seattle and Denver. Generally, flights for this route are nonstop.

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

Our cheapest airline available from Seattle to Denver is Frontier. Our recent data shows that you can find tickets from as low as $90 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $102 and $117 round-trip. These flights start at 42% lower than the current average price 3 months from now.

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

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $41. However, be on the lookout for offers from Spirit Airlines and Frontier, as they are both options that can get you from Seattle to Denver for a low price.

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
2h 53m
Average temperature for June in Denver
82.4 °F
Avg rainfall for June in Denver
1.8 ″

Airports servicing Seattle

Airports servicing Denver

Top 7 airlines flying from Seattle to Denver

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
Frontier
$58 $162 No cancel fee 62%
Delta
$74 $184 No cancel fee N/A
American Airlines
$57 $196 No cancel fee 71%
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.
Afternoon Noon to 6 PM 48% of SEA to DEN departures
Morning 6 AM to noon 29% of SEA to DEN departures
Evening 6 PM to midnight 13% of SEA to DEN departures
Early morning Midnight to 6 AM 10% 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
22 daily flights
Monday
33 daily flights
Tuesday
18 daily flights
Wednesday
23 daily flights
Thursday
25 daily flights
Friday
31 daily flights
Saturday
33 daily flights
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