Cheap flights from Denver to Seattle (DEN - SEA)

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The best prices from Denver Intl to Seattle/Tacoma Intl are usually found in January or April, booked 20 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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

All the information you need to plan the best DEN to SEA flight in 2021: compare Denver to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
DEN - SEA
Price
$111 - $173
SEA
Temperature
41 - 66.2 °F
SEA
Precipitation
0.7 - 6.6 inches

Popular in

December

High demand for flights, 14% potential price rise

Cheapest in

January

Best time to find cheap flights, 25% potential price drop

Round-trip from

$111

From Denver Intl to Seattle/Tacoma Intl

One-way from

$79

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from Denver to Seattle (DEN - SEA)?

When flying from Denver to Seattle, 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 9% versus a flight in the afternoon.

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

Find a great deal and save up to 12% by booking at least 18 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Denver to Seattle within the next two weeks, with the cheapest ticket starting at $140.

What is the cheapest day to fly round-trip from Denver to Seattle?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 29% on your flight compared to booking on days when demand is much higher.

Cheap flights from Denver to Seattle in October, November 2021

The best prices found for DEN to SEA flights for October, November
11 Nov - 15 Nov
$83pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
5 Nov - 11 Nov
$84pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
18 Nov - 20 Nov
$88pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl

Denver Intl to Seattle 2021 flight deals

Cheap flights to Seattle from Denver found for this year
11 Nov - 15 Nov
$83pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
5 Nov - 11 Nov
$84pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
18 Nov - 20 Nov
$88pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl

Non-stop flights to Seattle from Denver

Save time with Denver to Seattle direct flight deals
11 Nov - 15 Nov
$83pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
5 Nov - 11 Nov
$84pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
18 Nov - 20 Nov
$88pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl

Last minute flights from Denver to Seattle

Late deals on round-trip flights to Seattle from Denver, departing today and this week
29 Oct - 4 Nov
$93pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
29 Oct - 31 Oct
$102pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
29 Oct - 5 Nov
$103pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl

One-way flights to Seattle/Tacoma Intl from Denver

The cheapest one-way flights from Denver to Seattle
8:35 am - 10:44 am
Alaska Airlines
Nonstop
3h 09m
DEN - SEA
Alaska Airlines
5:05 pm - 7:14 pm
Frontier
Nonstop
3h 09m
DEN - SEA
Frontier
$82
JustFly
2:44 pm - 6:39 am
Spirit Airlines
1 Stop
16h 55m
DEN - SEA
Spirit Airlines
$83
FareScan

Related info for your journey

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

Flight FAQs

From Denver to Seattle

What airports do I use to fly from Denver to Seattle?

You will need to book a flight from Denver Intl to Seattle/Tacoma Intl if you want to fly from Denver to Seattle. At least 8 different airlines have flights from Denver Intl (DEN) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 28 flights to Seattle from the Denver airport per day. If you manage to book one that is nonstop, then you can expect the flight time from DEN to SEA to be around 2h 53m.

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

Delta, Alaska Airlines, and Frontier 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 Denver to Seattle for under $100 on Cheapflights?

Yes, there are multiple flights from Denver to Seattle for under $100. The cheapest flight booked recently is on Frontier for just $83, but on average you can expect to pay $98.

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

Cheapflights has at least 20 direct flights from Denver to Seattle under $100. A good price for a nonstop flight from Denver to Seattle is less than $99.

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

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

What days are nonstop flights available from Denver to Seattle?

Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Wednesday, Friday.

How popular is this Denver to Seattle flight route?

Within the past month, 373 users have taken a look at flights from Denver Intl to Seattle/Tacoma Intl.

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

16 flight departures from Denver to Seattle per day on average.
Morning (6am - Noon) - 44% of flight departures
Afternoon (Noon - 6pm) - 13% of flight departures
Evening (6pm - Midnight) - 44% of flight departures

How long is the flight from Denver to Seattle?

Airlines like Frontier, United Airlines, and Alaska Airlines fly from Denver to Seattle in about 3h 01m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 1028 mi. Generally, flights for this route are nonstop.

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

Frontier, at $83, was found to be the cheapest airline from Denver to Seattle.Alternate airlines to your destination round-trip include United Airlines and Alaska Airlines. Users have found that Frontier is 43% cheaper than the other options available to this destination.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $44. Users have also found prices from $45 and $59 on Spirit Airlines and Alaska Airlines, respectively.

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

Before booking your flight from Denver to Seattle check out the most popular airlines for this route: Major Airline, American Airlines or Alaska Airlines.

What are the cheapest flights from Denver to Seattle?

Looking at all options, your cheapest flight can be booked for $68. While the most popular route (Denver Intl - Seattle/Tacoma Intl) can be booked for $97 on average our data indicates $297 when flying from Denver to Seattle

What are the most reliable airlines from Denver to Seattle?

Before booking your flight to Seattle from Denver, check out the most reliable airlines to get you to your destination on time: Virgin Atlantic (100%), KLM (94%), Air France( 90%).

COVID Restrictions

View COVID Travel Restrictions for Seattle, WA

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

Information is based on travel restrictions for travel to Seattle/Tacoma Intl within the United States

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

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

Returning to Denver Intl from Seattle/Tacoma 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.

Hide COVID Travel Restrictions for Seattle, WA

Alternative routes for Denver to Seattle

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

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Denver to Seattle.
Flight duration from DEN to SEA
2h 54m
Average temperature for October in Seattle
60.8 °F
Avg rainfall for October in Seattle
3.5 ″

Airports servicing Denver

Airports servicing Seattle

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

The chart below displays the airlines Cheapflights users traveling from Denver to Seattle 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 $158 No cancel fee 62%
American Airlines
$58 $186 No cancel fee 71%
Delta
$69 $171 No cancel fee N/A
United Airlines
$78 $198 No cancel fee 69%
Alaska Airlines
$78 $194 No cancel fee 75%
Spirit Airlines
$87 $152 No cancel fee 65%
Southwest
$101 $307 No cancel fee 63%

Hourly flight availability from Denver to Seattle

See what time of day planes typically take off from Denver towards Seattle.
Afternoon Noon to 6 PM 40% of DEN to SEA departures
Morning 6 AM to noon 27% of DEN to SEA departures
Evening 6 PM to midnight 18% of DEN to SEA departures
Early morning Midnight to 6 AM 15% of DEN to SEA departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Denver to Seattle
See how many times per day planes take to the skies headed from Denver to Seattle.
Sunday
33 daily flights
Monday
27 daily flights
Tuesday
25 daily flights
Wednesday
26 daily flights
Thursday
26 daily flights
Friday
32 daily flights
Saturday
29 daily flights
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