Cheap flights from Seattle-Tacoma International to Denver (SEA - DEN)

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The best prices from Seattle-Tacoma International 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-Tacoma International (SEA) to Denver (DEN)

All the information you need to plan the best SEA to DEN flight in 2021: compare Seattle-Tacoma International 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-Tacoma International to Denver

One-way from

$49

One-way flight from Seattle-Tacoma International 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-Tacoma International to Denver?

Flights from Seattle-Tacoma International to Denver are found to be more expensive on Saturday. 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-Tacoma International to Denver?

Users have found that booking a flight from Seattle-Tacoma International to Denver at least 14 days early can save you up to 12% on average compared to booking a flight this week. If booking 14 days before your flight isn’t an option for you, users have found flights from Seattle-Tacoma International to Denver for as little as $88 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $106 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle-Tacoma International to Denver?

August is one of the best times of the year to fly to Denver from Seattle-Tacoma International. Prices for August average $98 per person but you can even find prices for as low as $36. The most expensive prices can be found in the month of December. Opting for a August flight can save you 38% on your journey compared to booking in August

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

It’s typically best to fly out from Seattle-Tacoma International to Denver at noon. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Seattle-Tacoma International to Denver in May, June 2021

The best prices found for SEA to DEN flights for May, June
19 May - 22 May
$58pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 May - 20 May
$61pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
19 May - 20 May
$62pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

Seattle-Tacoma International to Denver 2021 flight deals

Cheap flights to Denver from Seattle-Tacoma International found for this year
19 May - 22 May
$58pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 May - 20 May
$61pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
19 May - 20 May
$62pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

Non-stop flights to Denver from Seattle-Tacoma International

Save time with Seattle-Tacoma International to Denver direct flight deals
19 May - 22 May
$58pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 May - 20 May
$61pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
19 May - 20 May
$62pp
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-Tacoma International to Denver

Late deals on round-trip flights to Denver from Seattle-Tacoma International, departing today and this week
19 May - 22 May
$58pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
18 May - 20 May
$61pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
19 May - 20 May
$62pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

One-way flights to Denver from Seattle-Tacoma International

The cheapest one-way flights from Seattle-Tacoma International to Denver
4:20 pm - 7:57 pm
Alaska Airlines
Nonstop
2h 37m
SEA - DEN
Alaska Airlines
6:24 am - 3:25 pm
Multiple Airlines
1 Stop
8h 01m
SEA - DEN
Multiple Airlines
$73
Kiwi.com
4:20 am - 2:08 pm
Major Airline
1 Stop
8h 48m
SEA - DEN
Major Airline
$77
StudentUniverse

Related info for your journey

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

Flight FAQs

From Seattle-Tacoma International 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 21 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-Tacoma International to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle-Tacoma International to Denver for under $100. The cheapest flight booked recently is on Frontier for just $58, but on average you can expect to pay $82.

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

Cheapflights has at least 20 direct flights from Seattle-Tacoma International to Denver under $100. A good price for a nonstop flight from Seattle-Tacoma International to Denver is less than $82.

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

There are currently 20+ open flights from Seattle-Tacoma International 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, Wednesday, Thursday, Friday.

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-Tacoma International to Denver on average per day?

Per day, 8 flights depart from Seattle/Tacoma Intl to Denver Intl on average.
Morning (6am - Noon) - 13% of flight departures
Afternoon (Noon - 6pm) - 75% of flight departures
Evening (6pm - Midnight) - 13% of flight departures

Does it rain more in Seattle or Denver?

In Seattle, there will be same rainfall in Seattle compared to Denver over the next 17 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-Tacoma International to Denver?

Departing from Seattle-Tacoma International to Denver will take you 2h 37m. Seattle-Tacoma International and Denver are separated by a distance of 1028 mi. Most flights are nonstop.

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

Frontier, at $58, was found to be the cheapest airline from Seattle-Tacoma International to Denver. An alternate airline flying to your destination would be Alaska Airlines. Frontier is currently priced 62% below the average price you’ll pay for this route.

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

The cheapest airlines for a one-way flight from Seattle-Tacoma International to Denver are Frontier ($31), Alaska Airlines ($49), and Spirit Airlines ($74).

Alternative routes for Seattle-Tacoma International 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-Tacoma International to Denver.
Flight duration
2h 51m
Average temperature for May in Denver
73.4 °F
Avg rainfall for May in Denver
1.9 ″

Airports servicing Seattle

Airports servicing Denver

Top 7 airlines flying from Seattle-Tacoma International to Denver

The chart below displays the airlines Cheapflights users traveling from Seattle-Tacoma International 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-Tacoma International to Denver

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