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 Friday 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 2022: 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
Rainfall
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

$64

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.
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 in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the afternoon.

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.

Cheap flights from Seattle to Denver in May, June 2022

The best prices found for SEA to DEN flights for May, June
25 May - 27 May
$216pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
6 Jun - 14 Jun
$221pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 May - 1 Jun
$230pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Denver 2022 flight deals

Cheap flights to Denver from Seattle found for this year
17 Sep - 24 Sep
$127pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
1 Nov - 6 Nov
$128pp
SEA
Seattle/Tacoma Intl
United Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
United Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
8 Sep - 12 Sep
$129pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-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
17 Sep - 24 Sep
$127pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
1 Nov - 6 Nov
$128pp
SEA
Seattle/Tacoma Intl
United Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
United Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
8 Sep - 12 Sep
$129pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
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
1 Jun - 9 Jun
$233pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 May - 12 Jun
$237pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
31 May - 12 Jun
$242pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Denver Intl from Seattle

The cheapest one-way flights from Seattle to Denver
3:50 pm - 7:28 pm
Alaska Airlines
Nonstop
2h 38m
SEA - DEN
Alaska Airlines
1:00 am - 4:42 am
United Airlines
Nonstop
2h 42m
SEA - DEN
United Airlines
$84
United
3:59 pm - 7:38 pm
Delta
Nonstop
2h 39m
SEA - DEN
Delta
$104
Delta

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 31 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 35m 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?

United Airlines, Alaska Airlines, and Delta 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 $200 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under $200. The cheapest flight booked recently is on Multiple Airlines for just $127, but on average you can expect to pay $152.

Are there nonstop flights from Seattle to Denver for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Denver under $200. A good price for a nonstop flight from Seattle to Denver is less than $150.

Are there last-minute flights available from Seattle to Denver for under $300?

There are currently 20+ open flights from Seattle to Denver within the next 7 days for less than $300.

What days are nonstop flights available from Seattle to Denver?

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

How popular is this Seattle to Denver flight route?

Within the past month, 129 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 15 flights from Seattle to Denver a day.
Early Morning (Midnight to 6am) - 7% of flight departures
Morning (6am - Noon) - 13% of flight departures
Afternoon (Noon - 6pm) - 40% of flight departures
Evening (6pm - Midnight) - 40% 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 38m. Fly via United Airlines, Frontier, or Alaska Airlines to get the fastest option. The distance between Seattle and Denver is about 1028 mi. Most flights are nonstop.

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

Currently priced at $128, United Airlines will fly you from Seattle to Denver and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Alaska Airlines - these airlines can fly you to your destination from $130 and $183, respectively. These flights start at 17% 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 Frontier. According to our data, you can fly for as low as $62. Users have also found prices from $64 and $80 on Alaska Airlines and United Airlines, respectively.

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 Endeavor Airlines, American Airlines or Alaska Airlines as they are the most popular for this route.

What are the cheapest flights from Seattle to Denver?

Looking at all options, your cheapest flight can be booked for $48. While the most popular route (Seattle/Tacoma Intl - Denver Intl) can be booked for $127 on average our data indicates $496 when flying from Seattle to Denver.

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 SkyWest Airlines (94%), United Airlines (93%) or Air France (93%) 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 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) 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 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) 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 54m
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 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
Juneyao Airlines
$10 $18 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

Spirit Airlines
$38 $111 No cancel fee 65%
Frontier
$51 $127 No cancel fee 62%
Alaska Airlines
$68 $188 No cancel fee 75%
Delta
$78 $207 No cancel fee N/A
United Airlines
$78 $202 No cancel fee 69%
American Airlines
$122 $299 No cancel fee 71%

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 38% of SEA to DEN departures
Morning 6 AM to noon 27% of SEA to DEN departures
Evening 6 PM to midnight 26% of SEA to DEN departures
Early morning Midnight to 6 AM 9% 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
26 daily flights
Monday
39 daily flights
Tuesday
36 daily flights
Wednesday
35 daily flights
Thursday
33 daily flights
Friday
27 daily flights
Saturday
22 daily flights
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