Cheap Flights from Denver, CO to Seattle, WA from $30

One way Round trip

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On Cheapflightsplus.com you will find 10 direct and 26 connecting flights from Denver to Seattle. You can compare airfare deals from 4 airlines and multiple travel sites from $30, 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: $30 (one-way), $51 (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 $30. The fastest direct flight takes 3h 1m and the fastest connecting – 5h 52m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $30 Find flight	06:35 Denver Denver International	08:37 Seattle Seattle-Tacoma Intl	3h 2m	Frontier Airlines	F91175
from $54 Find flight	19:08 Denver Denver International	21:11 Seattle Seattle-Tacoma Intl	3h 3m	Frontier Airlines	F93405
from $92 Find flight	17:08 Denver Denver International	19:10 Seattle Seattle-Tacoma Intl	3h 2m	Alaska Airlines	AS615
from $92 Find flight	12:38 Denver Denver International	14:45 Seattle Seattle-Tacoma Intl	3h 7m	Alaska Airlines	AS682
from $116 Find flight	07:46 Denver Denver International	09:49 Seattle Seattle-Tacoma Intl	3h 3m	United Airlines	UA204
from $117 Find flight	20:44 Denver Denver International	22:45 Seattle Seattle-Tacoma Intl	3h 1m	United Airlines	UA2651
from $126 Find flight	19:00 Denver Denver International	21:01 Seattle Seattle-Tacoma Intl	3h 1m	United Airlines	UA299
from $128 Find flight	16:01 Denver Denver International	18:03 Seattle Seattle-Tacoma Intl	3h 2m	United Airlines	UA745
from $129 Find flight	11:50 Denver Denver International	13:54 Seattle Seattle-Tacoma Intl	3h 4m	United Airlines	UA690
from $179 Find flight	19:55 Denver Denver International	21:58 Seattle Seattle-Tacoma Intl	3h 3m	Alaska Airlines	AS525
from $87 Find flight	18:15 Denver Denver International	12:53+1 день Seattle Seattle-Tacoma Intl	19h 38m layover 14h 29m - Ontario	Frontier Airlines	F92907 F93164
from $92 Find flight	13:39 Denver Denver International	18:37 Seattle Seattle-Tacoma Intl	5h 58m layover 0h 54m - Phoenix	Frontier Airlines	F92141 F91723
from $122 Find flight	06:00 Denver Denver International	11:12 Seattle Seattle-Tacoma Intl	6h 12m layover 1h 0m - San Francisco	United Airlines	UA573 UA573
from $146 Find flight	14:49 Denver Denver International	07:12+1 день Seattle Seattle-Tacoma Intl	17h 23m layover 13h 33m - Portland	Alaska Airlines	AS350 AS124
from $159 Find flight	09:00 Denver Denver International	19:01 Seattle Seattle-Tacoma Intl	11h 1m layover 6h 14m - Las Vegas	Frontier Airlines	F92015 F92407
from $172 Find flight	14:49 Denver Denver International	09:02+1 день Seattle Seattle-Tacoma Intl	19h 13m layover 15h 23m - Portland	Alaska Airlines	AS350 AS910

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on February 23, 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
06:35 — 08:37	06:35 — 08:37 F91175 Frontier Airlines Denver — Seattle	3h 2m	Find flight from$30
07:46 — 09:49	07:46 — 09:49 UA204 United Airlines Denver — Seattle	3h 3m	Find flight from$116
11:50 — 13:54	11:50 — 13:54 UA690 United Airlines Denver — Seattle	3h 4m	Find flight from$129
12:38 — 14:45	12:38 — 14:45 AS682 Alaska Airlines Denver — Seattle	3h 7m	Find flight from$92
16:01 — 18:03	16:01 — 18:03 UA745 United Airlines Denver — Seattle	3h 2m	Find flight from$128
17:08 — 19:10	17:08 — 19:10 AS615 Alaska Airlines Denver — Seattle	3h 2m	Find flight from$92
19:00 — 21:01	19:00 — 21:01 UA299 United Airlines Denver — Seattle	3h 1m	Find flight from$126
19:08 — 21:11	19:08 — 21:11 F93405 Frontier Airlines Denver — Seattle	3h 3m	Find flight from$54
19:55 — 21:58	19:55 — 21:58 AS525 Alaska Airlines Denver — Seattle	3h 3m	Find flight from$179
20:44 — 22:45	20:44 — 22:45 UA2651 United Airlines Denver — Seattle	3h 1m	Find flight from$117
06:00 — 11:12	06:00 — 07:50 UA573 United Airlines Denver — San Francisco 1h stop 09:00 — 11:20 UA573 United Airlines San Francisco — Seattle	6h 12m including layover	Find flight from$122
07:45 — 14:22	07:45 — 09:40 UA2391 United Airlines Denver — San Francisco 2h 24m stop 12:04 — 14:22 UA419 United Airlines San Francisco — Seattle	7h 37m including layover	Find flight from$340
09:00 — 19:01	06:00 — 07:09 F92015 Frontier Airlines Denver — Las Vegas 6h 14m stop 15:44 — 18:38 F92407 Frontier Airlines Las Vegas — Seattle	11h 1m including layover	Find flight from$159
09:30 — 14:22	09:30 — 11:26 UA510 United Airlines Denver — San Francisco 38m stop 12:04 — 14:22 UA419 United Airlines San Francisco — Seattle	5h 52m including layover	Find flight from$369
11:20 — 18:29	11:31 — 13:20 UA1561 United Airlines Denver — San Francisco 2h 53m stop 16:23 — 18:41 UA2603 United Airlines San Francisco — Seattle	8h 9m including layover	Find flight from$190
13:39 — 18:37	12:24 — 14:20 F92141 Frontier Airlines Denver — Phoenix 54m stop 15:12 — 17:25 F91723 Frontier Airlines Phoenix — Seattle	5h 58m including layover	Find flight from$92
14:49 — 07:12 +1 day	12:45 — 14:40 AS350 Alaska Airlines Denver — Portland 13h 33m stop 06:00 — 07:03 AS124 Alaska Airlines Portland — Seattle	17h 23m including layover	Find flight from$146
14:49 — 09:02 +1 day	11:53 — 13:46 AS350 Alaska Airlines Denver — Portland 15h 23m stop 07:00 — 08:05 AS910 Alaska Airlines Portland — Seattle	19h 13m including layover	Find flight from$172
17:50 — 00:55 +1 day	17:50 — 19:46 UA1007 United Airlines Denver — San Francisco 2h 49m stop 22:35 — 00:55 UA1743 United Airlines San Francisco — Seattle	8h 5m including layover	Find flight from$243
18:15 — 12:53 +1 day	18:15 — 19:37 F92907 Frontier Airlines Denver — Ontario 14h 29m stop 10:06 — 12:53 F93164 Frontier Airlines Ontario — Seattle	19h 38m including layover	Find flight from$87
12:15 — 20:00 +1 day	12:15 — 16:43 Y41761 Volaris Denver — Guadalajara 4h 35m stop 21:18 — 22:55 AM261 Aeromexico Guadalajara — Mexico City 16h 55m stop 15:50 — 20:00 AM494 Aeromexico Mexico City — Seattle	32h 45m including layover	Find flight from$1420
16:15 — 00:55 +1 day	16:15 — 17:55 UA564 United Airlines Denver — Los Angeles 1h 11m stop 19:06 — 20:40 UA1743 United Airlines Los Angeles — San Francisco 1h 55m stop 22:35 — 00:55 UA1743 United Airlines San Francisco — Seattle	9h 40m including layover	Find flight from$286

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

*Departure and arrival times - local. Updated on February 23, 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 06:00 to 20:44 from 2 Denver airports and arrive 06:00 to 20:44 to 3 Seattle airports. Average flight time is 3h 3m.

The fastest flight 3h 1m
Average flight time 3h 3m
The earliest flight 06:00
The latest flight 20:44
Distance 1022 ml

The cheapest months to travel to Seattle are november (from 30 $), january (from 53 $), december (from 53 $).

The most expensive months are february (from 60 $), december (from 53 $), january (from 53 $).

What is the lowest airfare Denver to Seattle?

The cheapest plane ticket found by our users is $30. This airfare is for economy class on one-way F91175 flight by Frontier Airlines for February 21, 2025 which leaves Denver International in Denver at 06:35 am and arrives at Seattle Seattle-Tacoma Intl at 08:37.

Economy class

$30

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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 4 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 10 departures per week at the price of from $ 92 . And the most expensive tickets are offered by Volaris airline - from $ 1432.

Direct flights

There are 10 nonstop flights on the route. The fastest direct flight is UA2651 by United Airlines takes 3h 1m and the cheapest is F91175 by Frontier Airlines for $30.

AS - Alaska Airlines

from $92

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F9 - Frontier Airlines

from $30

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UA - United Airlines

from $116

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Connecting Flights

There are 26 flights with layovers on the route. The fastest connecting flight is UA510 by United Airlines takes 5h 52m and the cheapest is F91175 by Frontier Airlines for $87.

AS - Alaska Airlines

from $146

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F9 - Frontier Airlines

from $87

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UA - United Airlines

from $122

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Y4 - Volaris

from $1420

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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 $30
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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 4 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 — Chicago

from $66

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Denver — Phoenix

from $59

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Denver — Indianapolis

from $79

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Denver — Las Vegas

from $70

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Denver — Boston

from $68

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Denver — Tampa

from $57

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Denver — Omaha

from $64

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Denver — Houston

from $67

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Denver — Boise

from $77

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Denver — San Diego

from $78

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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 — London

from $63

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Denver — Paris

from $75

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Denver — Vancouver

from $60

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Denver — Cancun

from $66

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Denver — Birmingham

from $71

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Denver — Zurich

from $64

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Denver — Puerto Vallarta

from $56

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Denver — Athens

from $54

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Denver — Manchester

from $79

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Denver — Frankfurt

from $70

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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.