Frontier Airlines Seattle to Denver Flights

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Cheapflightsplus.com will find cheap Frontier Airlines flights from Seattle to Denver. Compare airline ticket prices and book air tickets starting from $38 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 june: one-way - $38, two-way – $65.

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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 $38. The fastest nonstop flight takes 2h 47m. The fastest connecting flight — 4h 39m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $38 Find flight	6:25 am Seattle Seattle-Tacoma Intl	10:12 am Denver Denver International	2h 47m	Frontier Airlines	F93406
from $39 Find flight	4:59 pm Seattle Seattle-Tacoma Intl	8:47 pm Denver Denver International	2h 48m	Frontier Airlines	F91176
from $75 Find flight	1:50 pm Seattle Seattle-Tacoma Intl	8:42 pm Denver Denver International	5h 52m layover 0h 51m - Ontario	Frontier Airlines	F93163 F92908
from $75 Find flight	3:11 pm Seattle Seattle-Tacoma Intl	11:08 pm Denver Denver International	6h 57m layover 2h 10m - Las Vegas	Frontier Airlines	F94830 F94612
from $78 Find flight	9:44 am Seattle Seattle-Tacoma Intl	11:52 pm Denver Denver International	13h 8m layover 6h 52m - Dallas	Frontier Airlines	F94066 F94069
from $79 Find flight	3:44 pm Seattle Seattle-Tacoma Intl	3:59 am+1 день Denver Denver International	11h 15m layover 6h 35m - Las Vegas	Frontier Airlines	F94830 F91994
from $80 Find flight	3:44 pm Seattle Seattle-Tacoma Intl	12:21 pm+1 день Denver Denver International	19h 37m layover 14h 50m - Las Vegas	Frontier Airlines	F94830 F92016
from $80 Find flight	3:44 pm Seattle Seattle-Tacoma Intl	9:09 am+1 день Denver Denver International	16h 25m layover 11h 36m - Las Vegas	Frontier Airlines	F94830 F92350
from $84 Find flight	4:54 pm Seattle Seattle-Tacoma Intl	10:33 pm Denver Denver International	4h 39m layover 0h 55m - Salt Lake City	Frontier Airlines	F94988 F94252
from $87 Find flight	12:13 pm Seattle Seattle-Tacoma Intl	11:20 pm Denver Denver International	10h 7m layover 5h 8m - Phoenix	Frontier Airlines	F93974 F92142
from $93 Find flight	8:42 pm Seattle Seattle-Tacoma Intl	4:20 am+1 день Denver Denver International	6h 38m layover 1h 37m - Ontario	Frontier Airlines	F92276 F91500
from $98 Find flight	4:31 pm Seattle Seattle-Tacoma Intl	8:55 am+1 день Denver Denver International	15h 24m layover 11h 44m - Salt Lake City	Frontier Airlines	F94988 F93862
from $98 Find flight	8:42 pm Seattle Seattle-Tacoma Intl	9:33 pm+1 день Denver Denver International	23h 51m layover 18h 49m - Ontario	Frontier Airlines	F92276 F92908

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 06/05/2025

Frontier Airlines Flight Schedule Seattle to Denver

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
12:13 pm — 11:20 pm	12:13 pm — 3:13 pm F93974 Frontier Airlines Seattle — Phoenix 5h 8m stop 8:21 pm — 11:20 pm F92142 Frontier Airlines Phoenix — Denver	10h 7m including layover	Find flight from$87
12:58 pm — 9:18 pm	12:58 pm — 4:02 pm F93974 Frontier Airlines Seattle — Phoenix 2h 23m stop 6:25 pm — 9:18 pm F91820 Frontier Airlines Phoenix — Denver	7h 20m including layover	Find flight from$102
1:50 pm — 8:42 pm	12:29 pm — 3:08 pm F93163 Frontier Airlines Seattle — Ontario 51m stop 4:08 pm — 7:26 pm F92908 Frontier Airlines Ontario — Denver	5h 52m including layover	Find flight from$75
2:37 pm — 4:20 am +1 day	1:50 pm — 4:26 pm F93163 Frontier Airlines Seattle — Ontario 7h 43m stop 0:59 am — 4:17 am F91500 Frontier Airlines Ontario — Denver	12h 43m including layover	Find flight from$80
3:11 pm — 11:08 pm	2:55 pm — 5:32 pm F94830 Frontier Airlines Seattle — Las Vegas 2h 10m stop 8:33 pm — 11:36 pm F94612 Frontier Airlines Las Vegas — Denver	6h 57m including layover	Find flight from$75
3:44 pm — 3:59 am +1 day	3:11 pm — 5:50 pm F94830 Frontier Airlines Seattle — Las Vegas 6h 35m stop 0:59 am — 4:00 am F91994 Frontier Airlines Las Vegas — Denver	11h 15m including layover	Find flight from$79
3:44 pm — 12:21 pm +1 day	3:11 pm — 5:50 pm F94830 Frontier Airlines Seattle — Las Vegas 14h 50m stop 9:14 am — 12:19 pm F92016 Frontier Airlines Las Vegas — Denver	19h 37m including layover	Find flight from$80
3:44 pm — 9:09 am +1 day	2:55 pm — 5:32 pm F94830 Frontier Airlines Seattle — Las Vegas 11h 36m stop 11:00 am — 2:06 pm F92350 Frontier Airlines Las Vegas — Denver	16h 25m including layover	Find flight from$80
4:31 pm — 8:55 am +1 day	4:29 pm — 7:36 pm F94988 Frontier Airlines Seattle — Salt Lake City 11h 44m stop 7:45 am — 9:25 am F93862 Frontier Airlines Salt Lake City — Denver	15h 24m including layover	Find flight from$98
4:54 pm — 10:33 pm	4:29 pm — 7:36 pm F94988 Frontier Airlines Seattle — Salt Lake City 55m stop 8:36 pm — 10:12 pm F94252 Frontier Airlines Salt Lake City — Denver	4h 39m including layover	Find flight from$84
4:59 pm — 8:47 pm	4:59 pm — 8:47 pm F91176 Frontier Airlines Seattle — Denver	2h 48m	Find flight from$39
6:25 am — 10:12 am	6:25 am — 10:12 am F93406 Frontier Airlines Seattle — Denver	2h 47m	Find flight from$38
8:42 pm — 4:20 am +1 day	8:42 pm — 11:22 pm F92276 Frontier Airlines Seattle — Ontario 1h 37m stop 0:59 am — 4:20 am F91500 Frontier Airlines Ontario — Denver	6h 38m including layover	Find flight from$93
8:42 pm — 9:33 pm +1 day	8:42 pm — 11:22 pm F92276 Frontier Airlines Seattle — Ontario 18h 49m stop 6:11 pm — 9:33 pm F92908 Frontier Airlines Ontario — Denver	23h 51m including layover	Find flight from$98
9:44 am — 11:52 pm	9:14 am — 3:10 pm F94066 Frontier Airlines Seattle — Dallas 6h 52m stop 10:30 pm — 11:57 pm F94069 Frontier Airlines Dallas — Denver	13h 8m including layover	Find flight from$78

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

*Departure and arrival times are local. Last updated on 06/05/2025

Flight Information

There are 2 flights 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 12:13 pm to 9:44 am. Nonstop flight is 2h 47m. The time difference between Seattle and Denver is 1h.

The fastest flight 2h 47m
Average flight time 2h 48m
The earliest flight 12:13 pm
The latest flight 9:44 am
Distance 1022 ml

The cheapest months for traveling to Denver are june (from 51 $), may (from 53 $), december (from 71 $).

The most expensive and popular months are november (from 226 $), february (from 106 $), july (from 81 $).

The cheapest flight by Frontier Airlines that our users were able to find is $38. This airfare is economy class on one-way F93406 flight for June 5, 2025 leaving Seattle-Tacoma Intl in Seattle at 6:25 am, 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 6 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 35 direct flights every day from Seattle. 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 $87

Find
SY - Sun Country Airlines

from $103

Find
TK - Turkish Airlines

from $1221

Find
HA - Hawaiian Airlines

from $79

Find
NK - Spirit Airlines

from $105

Find

See more connecting flights

How to book an air ticket yourself?

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