Cheap flights from Seattle to Denver (SEA - DEN)

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The best prices from Seattle 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 (SEA) to Denver (DEN)

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 to Denver

One-way from

$33

One-way flight from Seattle 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 to Denver?

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

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

Travelers have found it’s best to book a flight 14 days in advance to save up to 12% 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 14 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 $88, or $106 for flights within the next 24 hours.

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

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

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

It’s optimal to fly from Seattle to Denver at noon. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight in the morning.

Cheap flights from Seattle to Denver in March, April 2021

13 Mar - 27 Mar
$34pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
7 Apr - 8 Apr
$38pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
16 Mar - 24 Mar
$39pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl

Seattle to Denver 2021 flight deals

13 Mar - 27 Mar
$34pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
7 Apr - 8 Apr
$38pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
16 Mar - 24 Mar
$39pp
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

13 Mar - 27 Mar
$34pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
7 Apr - 8 Apr
$38pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
16 Mar - 24 Mar
$39pp
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 to Denver

13 Mar - 27 Mar
$34pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
12 Mar - 17 Mar
$43pp
SEA
Seattle/Tacoma Intl
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SEA
Seattle/Tacoma Intl
11 Mar - 17 Mar
$44pp
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

8:50 am - 12:29 pm
Alaska Airlines
Nonstop
2h 39m
SEA - DEN
Alaska Airlines
$33
mytrip.com
10:17 am - 1:49 pm
United Airlines
Nonstop
2h 32m
SEA - DEN
United Airlines
$39
United
2:59 pm - 6:44 pm
Delta
Nonstop
2h 45m
SEA - DEN
Delta
$49
Delta

Related info for your journey

Flight FAQs

From Seattle 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 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 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.

Can I find flights from Seattle to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under $100. The cheapest flight booked recently is on Frontier for just $34, but on average you can expect to pay $48.

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

Cheapflights has at least 20 direct flights from Seattle to Denver under $100. A good price for a nonstop flight from Seattle to Denver is less than $49.

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

There are currently 20+ open flights from Seattle 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: Sunday, Monday, Tuesday, Friday, Saturday.

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

Per day, 11 flights depart from Seattle/Tacoma Intl to Denver Intl on average.
Early Morning (Midnight to 6am) - 18% of flight departures
Morning (6am - Noon) - 55% of flight departures
Afternoon (Noon - 6pm) - 27% of flight departures

Does it rain more in Seattle or Denver?

In Seattle, there will be greater rainfall in Seattle compared to Denver over the next 22 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 to Denver?

Airlines like Frontier fly from Seattle to Denver in about 2h 37m. The time it takes to get you to your destination is usually consistent. There are 1028 mi between Seattle and Denver. Generally, flights for this route are nonstop.

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

Our cheapest airline available from Seattle to Denver is Frontier. Our recent data shows that you can find tickets from as low as $34 on this airline. This flight start at 78% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Seattle to Denver 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 Seattle to Denver for a low price.

Alternative routes for Seattle to Denver

Destination information for Denver

Flight duration
2h 53m
Average temperature for March in Denver
55.4 °F
Avg rainfall for March in Denver
0.9 ″

Airports servicing Seattle

Airports servicing Denver

Top 7 airlines flying from Seattle to Denver

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 to Denver

Afternoon Noon to 6 PM 70% of SEA to DEN departures
Morning 6 AM to noon 25% of SEA to DEN departures
Early morning Midnight to 6 AM 3% of SEA to DEN departures
Evening 6 PM to midnight 2% of SEA to DEN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Denver
Sunday
12 daily flights
Monday
18 daily flights
Tuesday
18 daily flights
Wednesday
21 daily flights
Thursday
18 daily flights
Friday
15 daily flights
Saturday
12 daily flights
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