Cheap Flights from Denver, CO to Seattle, WA from $39

One way Round trip

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On Cheapflightsplus.com you will find 35 direct and 201 connecting flights from Denver to Seattle. You can compare airfare deals from 6 airlines and multiple travel sites from $39, book and save on cheap plane tickets and last minute offers. Also check out DEN-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Denver to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $39 (one-way), $67 (round-trip).

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Best Flights from Denver to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Denver to Seattle with the lowest price of $39. The fastest direct flight takes 2h 55m and the fastest connecting – 4h 19m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $39 Find flight	22:29 Denver Denver International	00:31+1 день Seattle Seattle-Tacoma Intl	3h 2m	Frontier Airlines	F93405
from $45 Find flight	21:36 Denver Denver International	23:42 Seattle Seattle-Tacoma Intl	3h 6m	Frontier Airlines	F94545
from $56 Find flight	16:44 Denver Denver International	18:46 Seattle Seattle-Tacoma Intl	3h 2m	Frontier Airlines	F91175
from $60 Find flight	12:51 Denver Denver International	14:47 Seattle Seattle-Tacoma Intl	2h 56m	Hawaiian Airlines	HA4869
from $60 Find flight	15:03 Denver Denver International	17:00 Seattle Seattle-Tacoma Intl	2h 57m	Hawaiian Airlines	HA4865
from $60 Find flight	08:00 Denver Denver International	09:58 Seattle Seattle-Tacoma Intl	2h 58m	Hawaiian Airlines	HA4849
from $60 Find flight	21:33 Denver Denver International	23:31 Seattle Seattle-Tacoma Intl	2h 58m	Hawaiian Airlines	HA4820
from $63 Find flight	12:51 Denver Denver International	14:47 Seattle Seattle-Tacoma Intl	2h 56m	Alaska Airlines	AS682
from $75 Find flight	20:32 Denver Denver International	22:35 Seattle Seattle-Tacoma Intl	3h 3m	Hawaiian Airlines	HA4866
from $81 Find flight	08:00 Denver Denver International	09:57 Seattle Seattle-Tacoma Intl	2h 57m	United Airlines	UA2271
from $92 Find flight	06:00 Denver Denver International	07:59 Seattle Seattle-Tacoma Intl	2h 59m	Hawaiian Airlines	HA4850
from $94 Find flight	08:00 Denver Denver International	10:03 Seattle Seattle-Tacoma Intl	3h 3m	Alaska Airlines	AS735
from $98 Find flight	13:35 Denver Denver International	15:31 Seattle Seattle-Tacoma Intl	2h 56m	United Airlines	UA594
from $67 Find flight	15:00 Denver Denver International	19:59 Seattle Seattle-Tacoma Intl	5h 59m layover 0h 32m - San Diego	Hawaiian Airlines	HA4809 HA6443
from $75 Find flight	07:51 Denver Denver International	12:49 Seattle Seattle-Tacoma Intl	5h 58m layover 0h 51m - Ontario	Frontier Airlines	F91261 F93164
from $78 Find flight	22:40 Denver Denver International	09:59+1 день Seattle Seattle-Tacoma Intl	12h 19m layover 7h 5m - Phoenix	Frontier Airlines	F94753 F93973

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on June 02, 2025

Flight Schedule Denver (Colorado) to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from Denver to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
06:00 — 08:01	06:00 — 08:01 UA751 United Airlines Denver — Seattle	3h 1m	Find flight from$82
06:00 — 07:59	06:00 — 07:59 HA4850 Hawaiian Airlines Denver — Seattle	2h 59m	Find flight from$92
06:00 — 07:59	06:00 — 07:59 AS643 Alaska Airlines Denver — Seattle	2h 59m	Find flight from$96
08:00 — 09:58	08:00 — 09:58 HA4849 Hawaiian Airlines Denver — Seattle	2h 58m	Find flight from$60
08:00 — 09:58	08:00 — 09:58 AS745 Alaska Airlines Denver — Seattle	2h 58m	Find flight from$63
08:00 — 09:57	08:00 — 09:57 UA2271 United Airlines Denver — Seattle	2h 57m	Find flight from$81
08:00 — 10:03	08:00 — 10:03 HA4801 Hawaiian Airlines Denver — Seattle	3h 3m	Find flight from$93
08:00 — 10:03	08:00 — 10:03 AS735 Alaska Airlines Denver — Seattle	3h 3m	Find flight from$94
08:00 — 09:59	08:00 — 09:59 HA4868 Hawaiian Airlines Denver — Seattle	2h 59m	Find flight from$171
08:00 — 09:59	08:00 — 09:59 AS525 Alaska Airlines Denver — Seattle	2h 59m	Find flight from$174
08:05 — 10:05	08:05 — 10:05 UA204 United Airlines Denver — Seattle	3h	Find flight from$99
11:20 — 13:18	11:20 — 13:18 UA690 United Airlines Denver — Seattle	2h 58m	Find flight from$135
12:51 — 14:47	12:51 — 14:47 HA4869 Hawaiian Airlines Denver — Seattle	2h 56m	Find flight from$60
12:51 — 14:47	12:51 — 14:47 AS682 Alaska Airlines Denver — Seattle	2h 56m	Find flight from$63
12:56 — 14:55	12:56 — 14:55 AS427 Alaska Airlines Denver — Seattle	2h 59m	Find flight from$174
13:35 — 15:31	13:35 — 15:31 UA594 United Airlines Denver — Seattle	2h 56m	Find flight from$98
13:56 — 15:54	13:56 — 15:54 UA1951 United Airlines Denver — Seattle	2h 58m	Find flight from$106
14:58 — 16:58	14:58 — 16:58 AS426 Alaska Airlines Denver — Seattle	3h	Find flight from$120
15:03 — 17:00	15:03 — 17:00 HA4865 Hawaiian Airlines Denver — Seattle	2h 57m	Find flight from$60
15:03 — 17:00	15:03 — 17:00 AS535 Alaska Airlines Denver — Seattle	2h 57m	Find flight from$63
16:01 — 17:57	16:01 — 17:57 UA745 United Airlines Denver — Seattle	2h 56m	Find flight from$98
16:01 — 18:00	16:01 — 18:00 UA1254 United Airlines Denver — Seattle	2h 59m	Find flight from$99
16:44 — 18:46	16:44 — 18:46 F91175 Frontier Airlines Denver — Seattle	3h 2m	Find flight from$56
17:49 — 19:44	17:49 — 19:44 HA4867 Hawaiian Airlines Denver — Seattle	2h 55m	Find flight from$116
17:49 — 19:44	17:49 — 19:44 AS605 Alaska Airlines Denver — Seattle	2h 55m	Find flight from$120
18:17 — 20:18	18:17 — 20:18 AS621 Alaska Airlines Denver — Seattle	3h 1m	Find flight from$95
18:20 — 20:19	18:20 — 20:19 AS620 Alaska Airlines Denver — Seattle	2h 59m	Find flight from$63
19:20 — 21:17	19:20 — 21:17 UA299 United Airlines Denver — Seattle	2h 57m	Find flight from$83
19:25 — 21:22	19:25 — 21:22 UA1729 United Airlines Denver — Seattle	2h 57m	Find flight from$81
20:32 — 22:35	20:32 — 22:35 HA4866 Hawaiian Airlines Denver — Seattle	3h 3m	Find flight from$75
21:30 — 23:28	21:30 — 23:28 UA2651 United Airlines Denver — Seattle	2h 58m	Find flight from$81
21:33 — 23:31	21:33 — 23:31 HA4820 Hawaiian Airlines Denver — Seattle	2h 58m	Find flight from$60
21:33 — 23:31	21:33 — 23:31 AS615 Alaska Airlines Denver — Seattle	2h 58m	Find flight from$63
21:36 — 23:42	21:36 — 23:42 F94545 Frontier Airlines Denver — Seattle	3h 6m	Find flight from$45
22:29 — 00:31 +1 day	22:29 — 00:31 F93405 Frontier Airlines Denver — Seattle	3h 2m	Find flight from$39
07:01 — 13:40	07:01 — 08:25 HA4808 Hawaiian Airlines Denver — San Diego 2h 5m stop 10:30 — 13:40 HA6487 Hawaiian Airlines San Diego — Seattle	7h 39m including layover	Find flight from$67
07:01 — 15:04	07:01 — 08:25 HA4808 Hawaiian Airlines Denver — San Diego 3h 35m stop 12:00 — 15:04 HA4781 Hawaiian Airlines San Diego — Seattle	9h 3m including layover	Find flight from$67
09:10 — 17:38	07:30 — 08:27 F91375 Frontier Airlines Denver — Phoenix 4h 7m stop 14:02 — 17:13 F91723 Frontier Airlines Phoenix — Seattle	9h 28m including layover	Find flight from$87
09:54 — 14:59	10:19 — 11:22 F91993 Frontier Airlines Denver — Las Vegas 1h 1m stop 11:14 — 14:11 F92407 Frontier Airlines Las Vegas — Seattle	6h 5m including layover	Find flight from$93
11:40 — 15:33	11:40 — 13:23 HA4863 Hawaiian Airlines Denver — Portland 1h 7m stop 14:30 — 15:33 HA6314 Hawaiian Airlines Portland — Seattle	4h 53m including layover	Find flight from$80
11:40 — 16:36	11:40 — 13:10 HA4863 Hawaiian Airlines Denver — Portland 2h 17m stop 16:00 — 16:56 HA6401 Hawaiian Airlines Portland — Seattle	5h 56m including layover	Find flight from$80
14:00 — 14:06 +1 day	13:33 — 14:39 F92349 Frontier Airlines Denver — Las Vegas 20h 7m stop 11:19 — 14:16 F92407 Frontier Airlines Las Vegas — Seattle	25h 6m including layover	Find flight from$79
17:51 — 14:06 +1 day	17:46 — 18:55 F94967 Frontier Airlines Denver — Las Vegas 16h 18m stop 11:19 — 14:16 F92407 Frontier Airlines Las Vegas — Seattle	21h 15m including layover	Find flight from$78
19:11 — 22:59	19:06 — 20:50 AS1131 Alaska Airlines Denver — Portland 1h 4m stop 21:59 — 22:59 AS3408 Alaska Airlines Portland — Seattle	4h 48m including layover	Find flight from$83
22:29 — 14:06 +1 day	22:29 — 23:36 F9777 Frontier Airlines Denver — Las Vegas 11h 40m stop 11:19 — 14:16 F92407 Frontier Airlines Las Vegas — Seattle	16h 37m including layover	Find flight from$78

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

*Departure and arrival times - local. Updated on June 2, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Denver to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Denver and Seattle is 1644 miles. Time difference between the cities is 1h. Airplanes depart 05:00 to 23:54 from 2 Denver airports and arrive 05:00 to 23:54 to 3 Seattle airports. Average flight time is 2h 58m.

The fastest flight 2h 55m
Average flight time 2h 58m
The earliest flight 05:00
The latest flight 23:54
Distance 1022 ml

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

The most expensive months are february (from 144 $), january (from 99 $), october (from 90 $).

What is the lowest airfare Denver to Seattle?

The cheapest plane ticket found by our users is $39. This airfare is for economy class on one-way F93405 flight by Frontier Airlines for June 5, 2025 which leaves Denver International in Denver at 22:29 am and arrives at Seattle Seattle-Tacoma Intl at 00:31.

Economy class

$39

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Business class

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First class

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Popular Airlines on the Route

The flight Denver — Seattle is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 17 departures per week at the price of from $ 39 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 3351.

Direct flights

There are 35 nonstop flights on the route. The fastest direct flight is HA4867 by Hawaiian Airlines takes 2h 55m and the cheapest is F93405 by Frontier Airlines for $39.

F9 - Frontier Airlines

from $39

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UA - United Airlines

from $81

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AS - Alaska Airlines

from $63

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HA - Hawaiian Airlines

from $60

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Connecting Flights

There are 201 flights with layovers on the route. The fastest connecting flight is HA4864 by Hawaiian Airlines takes 4h 19m and the cheapest is F93405 by Frontier Airlines for $67.

F9 - Frontier Airlines

from $75

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UA - United Airlines

from $108

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AS - Alaska Airlines

from $83

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SY - Sun Country Airlines

from $103

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HA - Hawaiian Airlines

from $67

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G4 - Allegiant Air

from $147

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Airports

You can fly from Denver to Seattle from 2 airports (Denver International, Arapahoe Co).

Denver airports

Denver International-DEN

from $39
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Arapahoe Co-APA

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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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Airplanes

There are flights to Seattle from Denver by 6 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Denver

You may also consider searching for discounted plane tickets to some other popular places from Denver within United States.

Denver — Las Vegas

from $70

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Denver — Phoenix

from $59

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Denver — Boston

from $68

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Denver — Seattle

from $75

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Denver — Orlando

from $74

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Denver — Chicago

from $66

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Denver — Miami

from $68

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Denver — Tampa

from $57

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Denver — Los Angeles

from $17

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Denver — Houston

from $67

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Top International Destinations from Denver

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Denver — Cancun

from $66

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Denver — London

from $63

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Denver — Tokyo

from $75

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Denver — Vancouver

from $60

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Denver — Toronto

from $60

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Denver — Paris

from $75

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Denver — Mexico City

from $66

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Denver — Calgary

from $68

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Denver — Dublin

from $69

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Denver — San Jose

from $72

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How to book a plane 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 flight ticket.
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.