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 $36 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 may: one-way - $36, two-way – $62.

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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 $36. The fastest nonstop flight takes 2h 43m. The fastest connecting flight — 5h 23m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $36 Find flight	10:08 pm Seattle Seattle-Tacoma Intl	1:51 am+1 день Denver Denver International	2h 43m	Frontier Airlines	F91176
from $36 Find flight	8:18 am Seattle Seattle-Tacoma Intl	12:01 pm Denver Denver International	2h 43m	Frontier Airlines	F93406
from $70 Find flight	12:29 pm Seattle Seattle-Tacoma Intl	7:26 pm Denver Denver International	5h 57m layover 1h 0m - Ontario	Frontier Airlines	F93163 F92908
from $83 Find flight	9:52 pm Seattle Seattle-Tacoma Intl	10:03 am+1 день Denver Denver International	11h 11m layover 6h 21m - Phoenix	Frontier Airlines	F93974 F94768
from $90 Find flight	10:36 am Seattle Seattle-Tacoma Intl	8:01 am+1 день Denver Denver International	20h 25m layover 16h 38m - Salt Lake City	Frontier Airlines	F94988 F93862
from $90 Find flight	10:36 am Seattle Seattle-Tacoma Intl	12:25 pm+1 день Denver Denver International	24h 49m layover 21h 13m - Salt Lake City	Frontier Airlines	F94988 F93982
from $91 Find flight	11:36 am Seattle Seattle-Tacoma Intl	3:59 am+1 день Denver Denver International	15h 23m layover 10h 48m - Las Vegas	Frontier Airlines	F94204 F92430
from $91 Find flight	10:25 am Seattle Seattle-Tacoma Intl	11:29 pm Denver Denver International	12h 4m layover 5h 56m - Dallas	Frontier Airlines	F91968 F94463
from $103 Find flight	9:57 am Seattle Seattle-Tacoma Intl	6:36 pm Denver Denver International	7h 39m layover 3h 2m - Las Vegas	Frontier Airlines	F94830 F93844
from $104 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
from $107 Find flight	5:46 pm Seattle Seattle-Tacoma Intl	7:26 am+1 день Denver Denver International	12h 40m layover 6h 36m - Dallas	Frontier Airlines	F94066 F91323
from $107 Find flight	9:52 pm Seattle Seattle-Tacoma Intl	7:51 am+1 день Denver Denver International	8h 59m layover 4h 16m - Phoenix	Frontier Airlines	F91724 F91376
from $180 Find flight	9:57 am Seattle Seattle-Tacoma Intl	8:33 pm Denver Denver International	9h 36m layover 5h 50m - Salt Lake City	Frontier Airlines	F94988 F94252
from $223 Find flight	11:36 am Seattle Seattle-Tacoma Intl	11:19 am+1 день Denver Denver International	22h 43m layover 18h 7m - Las Vegas	Frontier Airlines	F94204 F92016
from $223 Find flight	11:36 am Seattle Seattle-Tacoma Intl	2:06 pm+1 день Denver Denver International	25h 30m layover 20h 49m - Las Vegas	Frontier Airlines	F94204 F92350
from $288 Find flight	12:54 pm Seattle Seattle-Tacoma Intl	7:17 pm Denver Denver International	5h 23m layover 0h 43m - Phoenix	Frontier Airlines	F91724 F94766

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 04/24/2025

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
10:08 pm — 1:51 am +1 day	10:08 pm — 1:51 am F91176 Frontier Airlines Seattle — Denver	2h 43m	Find flight from$36
8:18 am — 12:01 pm	8:18 am — 12:01 pm F93406 Frontier Airlines Seattle — Denver	2h 43m	Find flight from$36
10:36 am — 8:01 am +1 day	9:57 am — 1:05 pm F94988 Frontier Airlines Seattle — Salt Lake City 16h 38m stop 6:15 am — 7:52 am F93862 Frontier Airlines Salt Lake City — Denver	20h 25m including layover	Find flight from$90
11:36 am — 3:59 am +1 day	11:36 am — 2:11 pm F94204 Frontier Airlines Seattle — Las Vegas 10h 48m stop 0:59 am — 3:59 am F92430 Frontier Airlines Las Vegas — Denver	15h 23m including layover	Find flight from$91
11:36 am — 11:19 am +1 day	11:36 am — 2:11 pm F94204 Frontier Airlines Seattle — Las Vegas 18h 7m stop 8:18 am — 11:19 am F92016 Frontier Airlines Las Vegas — Denver	22h 43m including layover	Find flight from$223
12:07 pm — 6:40 pm	2:55 pm — 5:32 pm F94830 Frontier Airlines Seattle — Las Vegas 53m stop 0:59 am — 3:59 am F92430 Frontier Airlines Las Vegas — Denver	5h 33m including layover	Find flight from$77
12:29 pm — 7:26 pm	12:29 pm — 3:08 pm F93163 Frontier Airlines Seattle — Ontario 1h stop 4:08 pm — 7:26 pm F92908 Frontier Airlines Ontario — Denver	5h 57m including layover	Find flight from$70
1:40 pm — 0:49 am +1 day	1:40 pm — 4:20 pm F94830 Frontier Airlines Seattle — Las Vegas 5h 33m stop 9:53 pm — 0:49 am F93950 Frontier Airlines Las Vegas — Denver	10h 9m including layover	Find flight from$190
2:55 pm — 11:36 pm	2:55 pm — 5:32 pm F94830 Frontier Airlines Seattle — Las Vegas 3h 1m stop 8:33 pm — 11:36 pm F94612 Frontier Airlines Las Vegas — Denver	7h 41m including layover	Find flight from$365
4:35 pm — 11:33 pm	7:28 pm — 10:08 pm F93163 Frontier Airlines Seattle — Ontario 1h stop 6:30 am — 9:54 am F91500 Frontier Airlines Ontario — Denver	5h 58m including layover	Find flight from$78
4:58 pm — 11:44 pm	4:58 pm — 8:50 pm F93974 Frontier Airlines Seattle — Phoenix 1h stop 9:50 pm — 11:44 pm F92142 Frontier Airlines Phoenix — Denver	5h 46m including layover	Find flight from$70
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$104
5:46 pm — 7:26 am +1 day	5:46 pm — 11:39 pm F94066 Frontier Airlines Seattle — Dallas 6h 36m stop 6:15 am — 7:26 am F91323 Frontier Airlines Dallas — Denver	12h 40m including layover	Find flight from$107
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$71
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$104
9:52 pm — 10:03 am +1 day	9:52 pm — 1:44 am F93974 Frontier Airlines Seattle — Phoenix 6h 21m stop 8:15 am — 10:11 am F94768 Frontier Airlines Phoenix — Denver	11h 11m including layover	Find flight from$83
9:52 pm — 7:51 am +1 day	9:52 pm — 1:44 am F93974 Frontier Airlines Seattle — Phoenix 4h 16m stop 6:00 am — 7:51 am F91376 Frontier Airlines Phoenix — Denver	8h 59m including layover	Find flight from$83

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

*Departure and arrival times are local. Last updated on 04/24/2025

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 10:08 pm to 9:57 am. 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 9:57 am
Distance 1022 ml

The cheapest months for traveling to Denver are november (from 36 $), december (from 70 $), february (from 73 $).

The most expensive and popular months are january (from 78 $), february (from 73 $), december (from 70 $).

The cheapest flight by Frontier Airlines that our users were able to find is $36. 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 8 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 24 direct flights every day from Seattle. Airlines and fares are below:

DL - Delta Air Lines Inc.

from $125

Find
UA - United Airlines

from $110

Find
AS - Alaska Airlines

from $97

Find

See more direct flights

Connecting Flights

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

DL - Delta Air Lines Inc.

from $198

Find
UA - United Airlines

from $139

Find
AA - American Airlines

from $148

Find
AS - Alaska Airlines

from $119

Find
SY - Sun Country Airlines

from $142

Find
Y4 - Volaris

from $478

Find
AM - Aeromexico

from $1150

Find
NK - Spirit Airlines

from $210

Find

See more connecting flights

How to book an air ticket yourself?

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