Frontier Airlines Seattle to Denver Flights

Return flight: Denver – Seattle
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Best Airfare Price Calendar Flights Schedule

Cheapflightsplus.com will find cheap Frontier Airlines flights from Seattle to Denver. Compare airline ticket prices and book air tickets starting from $30 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Frontier Airlines, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — Denver (CO) by Frontier Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in march: one-way - $30, two-way – $51.
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Cheap Flights from Seattle to Denver by Frontier Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by Frontier Airlines, their prices start from $30. The fastest nonstop flight takes 2h 43m. The fastest connecting flight — 13h 32m.
Price Departure Arrival Flight Time Airline Flight
from $30
Find flight
10:08 pm
Seattle
Seattle-Tacoma Intl
 1:51 am+1 день
Denver
Denver International
 2h 43m Frontier Airlines
F91176
from $58
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7:51 pm
Seattle
Seattle-Tacoma Intl
 12:09 pm+1 день
Denver
Denver International
 15h 18m
layover
10h 26m - Las Vegas
 Frontier Airlines
F94830
F92016
from $86
Find flight
5:21 pm
Seattle
Seattle-Tacoma Intl
 7:53 am+1 день
Denver
Denver International
 13h 32m
layover
7h 2m - Dallas
 Frontier Airlines
F94066
F93365
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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 02/23/2025
Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
10:08 pm — 1:51 am
+1 day
10:08 pm — 1:51 am F91176 Frontier Airlines
Seattle — Denver
2h 43m
Find flight
from$30
5:21 pm — 7:53 am
+1 day
5:21 pm — 11:31 pm F94066 Frontier Airlines
Seattle — Dallas
7h 2m stop
6:33 am — 7:53 am F93365 Frontier Airlines
Dallas — Denver
13h 32m
including layover
Find flight
from$86
7:51 pm — 12:09 pm
+1 day
2:55 pm — 5:32 pm F94830 Frontier Airlines
Seattle — Las Vegas
10h 26m stop
8:18 am — 11:19 am F92016 Frontier Airlines
Las Vegas — Denver
15h 18m
including layover
Find flight
from$58
7:51 pm — 2:31 pm
+1 day
2:55 pm — 5:32 pm F94830 Frontier Airlines
Seattle — Las Vegas
12h 41m stop
11:00 am — 2:06 pm F92350 Frontier Airlines
Las Vegas — Denver
17h 40m
including layover
Find flight
from$86
*Departure and arrival times are local. Last updated on 02/23/2025

Flight Information

There is 1 flight by Frontier Airlines from Seattle to Denver every week with departures from Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB. All flights arrive at Denver International and Arapahoe Co.

Departures start from 10:08 pm to 7:51 pm. Nonstop flight is 2h 43m. The time difference between Seattle and Denver is 1h.

  • The fastest flight 2h 43m
  • Average flight time 2h 43m
  • The earliest flight 10:08 pm
  • The latest flight 7:51 pm
  • Distance 1022 ml

The cheapest months for traveling to Denver are november (from 30 $), december (from 58 $), february (from 60 $).

The cheapest flight by Frontier Airlines that our users were able to find is $30. This airfare is economy class on one-way F91176 flight for February 21, 2025 leaving Seattle-Tacoma Intl in Seattle at 10:08 pm, it includes all taxes and additional fees.

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Frontier Airlines Airplanes on the Route

List of the most popular Frontier Airlines airplanes flying from Seattle to Denver:

Other Popular Airlines on the Route

Besides Frontier Airlines there are other 4 airline carriers between Seattle and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to Denver.

Nonstop flights

There are 6 direct flights every day from Seattle. Airlines and fares are below:

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Connecting Flights

List of flights with layovers (1 and more stops):

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How to book an air ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected airfare.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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