Cheap flights from Denver to Seattle (DEN - SEA)

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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)

DEN - SEA
Price
$111 - $173
SEA
Temperature
46.4 - 77 °F
SEA
Rainfall
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

$37

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 6% versus a flight in the morning.

Cheap flights from Denver to Seattle in March, April 2021

31 Mar - 7 Apr
$34pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
3 Apr - 10 Apr
$39pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
19 Mar - 22 Mar
$43pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl

Denver to Seattle 2021 flight deals

31 Mar - 7 Apr
$34pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
3 Apr - 10 Apr
$39pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
19 Mar - 22 Mar
$43pp
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

31 Mar - 5 Apr
$34pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
3 Apr - 10 Apr
$39pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
19 Mar - 22 Mar
$43pp
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

11 Mar - 15 Mar
$34pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
11 Mar - 13 Mar
$39pp
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
14 Mar - 31 Mar
$43pp
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 from Denver

2:00 am - 3:55 am
Alaska Airlines
Nonstop
2h 55m
DEN - SEA
Alaska Airlines
$37
mytrip.com
11:01 am - 1:11 pm
Frontier
Nonstop
3h 10m
DEN - SEA
Frontier
$48
mytrip.com
6:59 pm - 3:21 pm
Multiple Airlines
1 Stop
21h 22m
DEN - SEA
Multiple Airlines
$53
Gotogate

Related info for your journey

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.

What safety measures are being taken by airlines flying from Denver Intl to Seattle/Tacoma Intl to control the spread of COVID-19?

Alaska Airlines and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Denver Intl to Seattle/Tacoma 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 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 $34, but on average you can expect to pay $51.

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 $51.

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, Wednesday, Thursday, Saturday.

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

Per day, 24 flights depart from Denver Intl to Seattle/Tacoma Intl on average.
Early Morning (Midnight to 6am) - 8% of flight departures
Morning (6am - Noon) - 33% of flight departures
Afternoon (Noon - 6pm) - 33% of flight departures
Evening (6pm - Midnight) - 25% 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 less than Seattle. You can assume this to be the case over the next 9 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 50m. The distance from Denver to Seattle is about 1028 mi. Most flights are nonstop.

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

Our cheapest airline available from Denver to Seattle is Frontier. Our recent data shows that you can find tickets from as low as $34 on this airline. Frontier is 77% 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 Frontier, with whom users have recently found tickets for as low as $17. However, be on the lookout for offers from Spirit Airlines and Alaska Airlines, as they are both options that can get you from Denver to Seattle for a low price.

Alternative routes for Denver to Seattle

Destination information for Seattle

Flight duration
2h 52m
Average temperature for March in Seattle
55.4 °F
Avg rainfall for March in Seattle
3.8 ″

Airports servicing Denver

Airports servicing Seattle

Top 7 airlines flying from Denver to Seattle

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

Afternoon Noon to 6 PM 56% of DEN to SEA departures
Morning 6 AM to noon 18% of DEN to SEA departures
Early morning Midnight to 6 AM 13% of DEN to SEA departures
Evening 6 PM to midnight 13% of DEN to SEA departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Denver to Seattle
Sunday
14 daily flights
Monday
15 daily flights
Tuesday
13 daily flights
Wednesday
15 daily flights
Thursday
11 daily flights
Friday
20 daily flights
Saturday
19 daily flights
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