Frontier Airlines Denver to Seattle Flights

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Cheapflightsplus.com will find cheap Frontier Airlines flights from Denver to Seattle. Compare airline ticket prices and book air tickets starting from $45 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 Denver (CO) — Seattle (WA) 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 june: one-way - $45, two-way – $77.

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Cheap Flights from Denver to Seattle 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 $45. The fastest nonstop flight takes 3h 2m. The fastest connecting flight — 5h 5m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $45 Find flight	9:36 pm Denver Denver International	11:42 pm Seattle Seattle-Tacoma Intl	3h 6m	Frontier Airlines	F94545
from $56 Find flight	10:29 pm Denver Denver International	0:31 am+1 день Seattle Seattle-Tacoma Intl	3h 2m	Frontier Airlines	F93405
from $56 Find flight	4:44 pm Denver Denver International	6:46 pm Seattle Seattle-Tacoma Intl	3h 2m	Frontier Airlines	F91175
from $51 Find flight	7:51 am Denver Denver International	12:49 pm Seattle Seattle-Tacoma Intl	5h 58m layover 0h 51m - Ontario	Frontier Airlines	F91261 F93164
from $75 Find flight	7:00 am Denver Denver International	2:06 pm Seattle Seattle-Tacoma Intl	8h 6m layover 3h 15m - Las Vegas	Frontier Airlines	F92015 F92407
from $79 Find flight	10:29 pm Denver Denver International	2:06 pm+1 день Seattle Seattle-Tacoma Intl	16h 37m layover 11h 40m - Las Vegas	Frontier Airlines	F9777 F92407
from $79 Find flight	5:51 pm Denver Denver International	2:06 pm+1 день Seattle Seattle-Tacoma Intl	21h 15m layover 16h 18m - Las Vegas	Frontier Airlines	F94967 F92407
from $79 Find flight	2:00 pm Denver Denver International	2:06 pm+1 день Seattle Seattle-Tacoma Intl	25h 6m layover 20h 7m - Las Vegas	Frontier Airlines	F92349 F92407
from $79 Find flight	10:29 pm Denver Denver International	10:02 am+1 день Seattle Seattle-Tacoma Intl	12h 33m layover 7h 24m - Phoenix	Frontier Airlines	F94753 F91723
from $87 Find flight	10:29 pm Denver Denver International	12:49 pm+1 день Seattle Seattle-Tacoma Intl	15h 20m layover 10h 13m - Ontario	Frontier Airlines	F91499 F93164
from $87 Find flight	9:15 pm Denver Denver International	8:34 am+1 день Seattle Seattle-Tacoma Intl	12h 19m layover 5h 46m - Dallas	Frontier Airlines	F92632 F94065
from $87 Find flight	9:10 am Denver Denver International	5:38 pm Seattle Seattle-Tacoma Intl	9h 28m layover 4h 7m - Phoenix	Frontier Airlines	F91375 F91723
from $93 Find flight	9:54 am Denver Denver International	2:59 pm Seattle Seattle-Tacoma Intl	6h 5m layover 1h 1m - Las Vegas	Frontier Airlines	F91993 F92407
from $135 Find flight	11:34 am Denver Denver International	3:39 pm Seattle Seattle-Tacoma Intl	5h 5m layover 1h 15m - Salt Lake City	Frontier Airlines	F94721 F94987

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 06/07/2025

Frontier Airlines Flight Schedule Denver to Seattle

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	Flight Details	Flight Time	Price
10:29 pm — 0:31 am +1 day	10:29 pm — 0:31 am F93405 Frontier Airlines Denver — Seattle	3h 2m	Find flight from$56
10:29 pm — 2:06 pm +1 day	10:29 pm — 11:36 pm F9777 Frontier Airlines Denver — Las Vegas 11h 40m stop 11:19 am — 2:16 pm F92407 Frontier Airlines Las Vegas — Seattle	16h 37m including layover	Find flight from$79
10:29 pm — 10:02 am +1 day	10:29 pm — 11:27 pm F94753 Frontier Airlines Denver — Phoenix 7h 24m stop 6:48 am — 10:04 am F91723 Frontier Airlines Phoenix — Seattle	12h 33m including layover	Find flight from$79
10:29 pm — 12:49 pm +1 day	10:29 pm — 11:51 pm F91499 Frontier Airlines Denver — Ontario 10h 13m stop 10:03 am — 1:03 pm F93164 Frontier Airlines Ontario — Seattle	15h 20m including layover	Find flight from$87
11:34 am — 3:39 pm	11:22 am — 12:59 pm F94721 Frontier Airlines Denver — Salt Lake City 1h 15m stop 2:18 pm — 3:34 pm F94987 Frontier Airlines Salt Lake City — Seattle	5h 5m including layover	Find flight from$135
2:00 pm — 2:06 pm +1 day	1:33 pm — 2:39 pm F92349 Frontier Airlines Denver — Las Vegas 20h 7m stop 11:19 am — 2:16 pm F92407 Frontier Airlines Las Vegas — Seattle	25h 6m including layover	Find flight from$79
4:44 pm — 6:46 pm	4:44 pm — 6:46 pm F91175 Frontier Airlines Denver — Seattle	3h 2m	Find flight from$56
5:51 pm — 2:06 pm +1 day	5:46 pm — 6:55 pm F94967 Frontier Airlines Denver — Las Vegas 16h 18m stop 11:19 am — 2:16 pm F92407 Frontier Airlines Las Vegas — Seattle	21h 15m including layover	Find flight from$79
7:00 am — 2:06 pm	6:00 am — 7:09 am F92015 Frontier Airlines Denver — Las Vegas 3h 15m stop 3:44 pm — 6:38 pm F92407 Frontier Airlines Las Vegas — Seattle	8h 6m including layover	Find flight from$75
7:51 am — 12:49 pm	8:20 am — 9:46 am F91261 Frontier Airlines Denver — Ontario 51m stop 7:58 am — 10:54 am F93164 Frontier Airlines Ontario — Seattle	5h 58m including layover	Find flight from$51
9:10 am — 5:38 pm	7:30 am — 8:27 am F91375 Frontier Airlines Denver — Phoenix 4h 7m stop 2:02 pm — 5:13 pm F91723 Frontier Airlines Phoenix — Seattle	9h 28m including layover	Find flight from$87
9:15 pm — 8:34 am +1 day	7:51 pm — 11:13 pm F92632 Frontier Airlines Denver — Dallas 5h 46m stop 6:00 am — 8:19 am F94065 Frontier Airlines Dallas — Seattle	12h 19m including layover	Find flight from$87
9:36 pm — 11:42 pm	9:36 pm — 11:42 pm F94545 Frontier Airlines Denver — Seattle	3h 6m	Find flight from$45
9:54 am — 2:59 pm	10:19 am — 11:22 am F91993 Frontier Airlines Denver — Las Vegas 1h 1m stop 11:14 am — 2:11 pm F92407 Frontier Airlines Las Vegas — Seattle	6h 5m including layover	Find flight from$93

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 06/07/2025

Flight Information

There are 3 flights by Frontier Airlines from Denver to Seattle every week with departures from Denver International and Arapahoe Co. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 10:29 pm to 9:54 am. Nonstop flight is 3h 2m. The time difference between Denver and Seattle is 1h.

The fastest flight 3h 2m
Average flight time 3h 2m
The earliest flight 10:29 pm
The latest flight 9:54 am
Distance 1022 ml

The cheapest months for traveling to Seattle are june (from 53 $), august (from 61 $), november (from 68 $).

The most expensive and popular months are february (from 304 $), january (from 99 $), july (from 81 $).

The cheapest flight by Frontier Airlines that our users were able to find is $45. This airfare is economy class on one-way F94545 flight for August 16, 2025 leaving Denver International in Denver at 9:36 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 Denver to Seattle:

Other Popular Airlines on the Route

Besides Frontier Airlines there are other 5 airline carriers between Denver and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Denver to Seattle.

Nonstop flights

There are 28 direct flights every day from Denver. Airlines and fares are below:

UA - United Airlines

from $81

Find
AS - Alaska Airlines

from $63

Find
HA - Hawaiian Airlines

from $60

Find

See more direct flights

Connecting Flights

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

UA - United Airlines

from $108

Find
AS - Alaska Airlines

from $83

Find
SY - Sun Country Airlines

from $103

Find
HA - Hawaiian Airlines

from $67

Find
G4 - Allegiant Air

from $193

Find

See more connecting flights

How to book an air ticket yourself?

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