Cheap flights from Denver to Seattle (DEN - SEA)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Denver to Seattle 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
46.4 - 77 °F
SEA
Precipitation
0.7 - 6.5 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 to Seattle

One-way from

$79

One-way flight from Denver to Seattle

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 Denver to Seattle?

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

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 28 days in advance, which can save you up to 71% on flights from Denver to Seattle compared to booking the week you need them. Waiting 28 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $123. For sooner than that we have options available in the next 3 days from $189.

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

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

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.

Cheap flights from Denver to Seattle in July, August 2021

The best prices found for DEN to SEA flights for July, August
23 Aug - 24 Aug
$86pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
21 Aug - 24 Aug
$90pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
26 Aug - 31 Aug
$92pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl

Denver to Seattle 2021 flight deals

Cheap flights to Seattle from Denver found for this year
23 Aug - 24 Aug
$86pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
21 Aug - 24 Aug
$90pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
1 Sep - 9 Sep
$92pp
DEN
Denver Intl
Multiple Airlines
 
1 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
18 Sep - 20 Sep
$96pp
DEN
Denver Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
DEN
Denver Intl
26 Aug - 28 Aug
$102pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
27 Aug - 27 Aug
$103pp
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
6 Aug - 24 Aug
$95pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
6 Aug - 9 Aug
$100pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
DEN
Denver Intl
3 Aug - 7 Sep
$111pp
DEN
Denver Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
DEN
Denver Intl

One-way flights to Seattle from Denver

The cheapest one-way flights from Denver to Seattle
2:45 am - 4:45 am
Alaska Airlines
Nonstop
3h 00m
DEN - SEA
Alaska Airlines
5:50 pm - 7:44 pm
Frontier
Nonstop
2h 54m
DEN - SEA
Frontier
$80
JustFly
3:27 pm - 11:41 am
Spirit Airlines
1 Stop
21h 14m
DEN - SEA
Spirit Airlines
$81
Gotogate

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

Are flight prices decreasing from Denver to Seattle 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 Denver and Seattle 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.

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.

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 46m.

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 Multiple Airlines for just $86, but on average you can expect to pay $100.

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 $113.

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?

You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

How popular is this 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?

Per day, 20 flights depart from Denver Intl to Seattle/Tacoma Intl on average.
Early Morning (Midnight to 6am) - 20% of flight departures
Morning (6am - Noon) - 55% of flight departures
Afternoon (Noon - 6pm) - 5% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

Does it rain more in Denver or Seattle?

When traveling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Denver is roughly similar to Seattle. You can assume this to be the case over the next 10 days.

Is Denver weather warmer or cooler than Seattle?

Our data indicates that the weather will be 90 °F on average in the month of July. The temperature in Seattle is typically colder than in Denver. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Denver to Seattle?

Departing from Denver to Seattle will take you 2h 54m. The distance from Denver to Seattle is about 1028 mi. Most flights are nonstop.

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

Our cheapest airline available from Denver to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as $96 on this airline. Additional options worth looking into are Frontier and Spirit Airlines, starting at $102 and $110 round-trip. Alaska Airlines is 35% cheaper than the average price of flights available within the next 90 days to this destination.

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

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $25. However, be on the lookout for offers from Spirit Airlines and Frontier, as they are both options that can get you from Denver to Seattle for a low price.

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
2h 51m
Average temperature for July in Seattle
77.0 °F
Avg rainfall for July in Seattle
0.7 ″

Airports servicing Denver

Airports servicing Seattle

Top 7 airlines flying from Denver to Seattle

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
Spirit Airlines
$87 $152 No cancel fee 65%
Frontier
$58 $158 No cancel fee 62%
Delta
$69 $171 No cancel fee N/A
American Airlines
$58 $186 No cancel fee 71%
Alaska Airlines
$78 $194 No cancel fee 75%
United Airlines
$78 $198 No cancel fee 69%
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.
Morning 6 AM to noon 34% of DEN to SEA departures
Afternoon Noon to 6 PM 31% of DEN to SEA departures
Evening 6 PM to midnight 21% of DEN to SEA departures
Early morning Midnight to 6 AM 14% 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
19 daily flights
Monday
33 daily flights
Tuesday
31 daily flights
Wednesday
37 daily flights
Thursday
26 daily flights
Friday
27 daily flights
Saturday
24 daily flights
Home North America USA Washington Seattle Cheap flights from Denver to Seattle