Cheap Flights from Denver, CO to Seattle, WA from $33

One way Round trip

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On Cheapflightsplus.com you will find 24 direct and 408 connecting flights from Denver to Seattle. You can compare airfare deals from 8 airlines and multiple travel sites from $33, 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: $33 (one-way), $57 (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 $33. The fastest direct flight takes 3h 1m and the fastest connecting – 4h 24m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $33 Find flight	06:35 Denver Denver International	08:37 Seattle Seattle-Tacoma Intl	3h 2m	Frontier Airlines	F91175
from $60 Find flight	19:08 Denver Denver International	21:11 Seattle Seattle-Tacoma Intl	3h 3m	Frontier Airlines	F93405
from $65 Find flight	13:57 Denver Denver International	16:00 Seattle Seattle-Tacoma Intl	3h 3m	Alaska Airlines	AS1006
from $101 Find flight	07:45 Denver Denver International	09:53 Seattle Seattle-Tacoma Intl	3h 8m	United Airlines	UA1399
from $102 Find flight	17:08 Denver Denver International	19:10 Seattle Seattle-Tacoma Intl	3h 2m	Alaska Airlines	AS615
from $113 Find flight	06:05 Denver Denver International	08:20 Seattle Seattle-Tacoma Intl	3h 15m	Delta Air Lines Inc.	DL1731
from $124 Find flight	13:40 Denver Denver International	15:58 Seattle Seattle-Tacoma Intl	3h 18m	Delta Air Lines Inc.	DL2740
from $129 Find flight	20:44 Denver Denver International	22:45 Seattle Seattle-Tacoma Intl	3h 1m	United Airlines	UA2651
from $143 Find flight	11:50 Denver Denver International	13:54 Seattle Seattle-Tacoma Intl	3h 4m	United Airlines	UA690
from $153 Find flight	15:45 Denver Denver International	17:49 Seattle Seattle-Tacoma Intl	3h 4m	Alaska Airlines	AS620
from $62 Find flight	08:54 Denver Denver International	14:15 Seattle Seattle-Tacoma Intl	6h 21m layover 1h 0m - Ontario	Frontier Airlines	F91261 F93164
from $62 Find flight	22:38 Denver Denver International	10:54+1 день Seattle Seattle-Tacoma Intl	13h 16m layover 7h 54m - Ontario	Frontier Airlines	F91499 F93164
from $64 Find flight	16:59 Denver Denver International	20:48 Seattle Seattle-Tacoma Intl	4h 49m layover 0h 53m - Salt Lake City	Frontier Airlines	F94251 F94987
from $64 Find flight	08:08 Denver Denver International	12:50 Seattle Seattle-Tacoma Intl	5h 42m layover 1h 33m - Salt Lake City	Frontier Airlines	F93981 F94987
from $76 Find flight	22:41 Denver Denver International	08:50+1 день Seattle Seattle-Tacoma Intl	11h 9m layover 6h 9m - Las Vegas	Frontier Airlines	F94611 F92407
from $96 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

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on April 22, 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 — 08:06	06:00 — 08:06 AS643 Alaska Airlines Denver — Seattle	3h 6m	Find flight from$112
06:05 — 08:20	06:05 — 08:20 DL1731 Delta Air Lines Inc. Denver — Seattle	3h 15m	Find flight from$113
06:35 — 08:37	06:35 — 08:37 F91175 Frontier Airlines Denver — Seattle	3h 2m	Find flight from$33
07:45 — 09:53	07:45 — 09:53 UA1399 United Airlines Denver — Seattle	3h 8m	Find flight from$101
07:46 — 09:49	07:46 — 09:49 UA204 United Airlines Denver — Seattle	3h 3m	Find flight from$129
10:43 — 12:48	10:43 — 12:48 AS681 Alaska Airlines Denver — Seattle	3h 5m	Find flight from$116
11:50 — 13:54	11:50 — 13:54 UA690 United Airlines Denver — Seattle	3h 4m	Find flight from$143
11:50 — 13:57	11:50 — 13:57 UA2246 United Airlines Denver — Seattle	3h 7m	Find flight from$193
11:50 — 13:57	11:50 — 13:57 UA423 United Airlines Denver — Seattle	3h 7m	Find flight from$385
11:55 — 14:00	11:55 — 14:00 UA316 United Airlines Denver — Seattle	3h 5m	Find flight from$247
12:38 — 14:45	12:38 — 14:45 AS682 Alaska Airlines Denver — Seattle	3h 7m	Find flight from$102
13:40 — 15:58	13:40 — 15:58 DL2740 Delta Air Lines Inc. Denver — Seattle	3h 18m	Find flight from$124
13:57 — 16:00	13:57 — 16:00 AS1006 Alaska Airlines Denver — Seattle	3h 3m	Find flight from$65
15:45 — 17:49	15:45 — 17:49 AS620 Alaska Airlines Denver — Seattle	3h 4m	Find flight from$153
16:01 — 18:03	16:01 — 18:03 UA745 United Airlines Denver — Seattle	3h 2m	Find flight from$141
16:04 — 18:09	16:04 — 18:09 UA759 United Airlines Denver — Seattle	3h 5m	Find flight from$151
16:27 — 18:34	16:27 — 18:34 AS1005 Alaska Airlines Denver — Seattle	3h 7m	Find flight from$247
17:08 — 19:10	17:08 — 19:10 AS615 Alaska Airlines Denver — Seattle	3h 2m	Find flight from$102
19:00 — 21:01	19:00 — 21:01 UA299 United Airlines Denver — Seattle	3h 1m	Find flight from$140
19:08 — 21:11	19:08 — 21:11 F93405 Frontier Airlines Denver — Seattle	3h 3m	Find flight from$60
19:55 — 21:58	19:55 — 21:58 AS525 Alaska Airlines Denver — Seattle	3h 3m	Find flight from$198
19:56 — 22:00	19:56 — 22:00 AS705 Alaska Airlines Denver — Seattle	3h 4m	Find flight from$211
19:59 — 22:20	19:59 — 22:20 DL4094 Delta Air Lines Inc. Denver — Seattle	3h 21m	Find flight from$113
20:44 — 22:45	20:44 — 22:45 UA2651 United Airlines Denver — Seattle	3h 1m	Find flight from$129
06:45 — 15:58	06:45 — 08:53 F91375 Frontier Airlines Denver — Phoenix 4h 51m stop 13:44 — 15:58 F93973 Frontier Airlines Phoenix — Seattle	10h 13m including layover	Find flight from$65
07:45 — 15:21	07:45 — 09:32 UA2391 United Airlines Denver — San Francisco 3h 31m stop 13:03 — 15:21 UA2391 United Airlines San Francisco — Seattle	8h 36m including layover	Find flight from$107
08:08 — 12:50	08:08 — 09:45 F93981 Frontier Airlines Denver — Salt Lake City 1h 33m stop 11:18 — 12:50 F94987 Frontier Airlines Salt Lake City — Seattle	5h 42m including layover	Find flight from$64
08:54 — 14:15	08:20 — 09:46 F91261 Frontier Airlines Denver — Ontario 1h stop 07:58 — 10:54 F93164 Frontier Airlines Ontario — Seattle	6h 21m including layover	Find flight from$62
09:15 — 15:25	09:06 — 10:55 UA754 United Airlines Denver — San Francisco 1h 59m stop 13:00 — 15:18 UA2650 United Airlines San Francisco — Seattle	7h 10m including layover	Find flight from$128
09:43 — 15:58	09:43 — 11:48 F91819 Frontier Airlines Denver — Phoenix 1h 56m stop 13:44 — 15:58 F93973 Frontier Airlines Phoenix — Seattle	7h 15m including layover	Find flight from$64
10:15 — 15:45	10:15 — 12:04 UA2041 United Airlines Denver — San Francisco 1h 21m stop 13:25 — 15:45 UA593 United Airlines San Francisco — Seattle	6h 30m including layover	Find flight from$152
12:54 — 19:15	12:54 — 15:00 F92141 Frontier Airlines Denver — Phoenix 2h 1m stop 17:01 — 19:15 F93973 Frontier Airlines Phoenix — Seattle	7h 21m including layover	Find flight from$147
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$102
14:01 — 20:48	14:01 — 15:39 F94235 Frontier Airlines Denver — Salt Lake City 3h 46m stop 19:25 — 20:48 F94987 Frontier Airlines Salt Lake City — Seattle	7h 47m including layover	Find flight from$64
14:10 — 17:51	14:10 — 16:01 AS336 Alaska Airlines Denver — Portland 49m stop 16:50 — 17:51 AS2102 Alaska Airlines Portland — Seattle	4h 41m including layover	Find flight from$115
15:59 — 21:15	15:43 — 17:32 UA1300 United Airlines Denver — San Francisco 1h 5m stop 18:50 — 21:07 UA2019 United Airlines San Francisco — Seattle	6h 16m including layover	Find flight from$151
16:59 — 20:48	16:59 — 18:32 F94251 Frontier Airlines Denver — Salt Lake City 53m stop 19:25 — 20:48 F94987 Frontier Airlines Salt Lake City — Seattle	4h 49m including layover	Find flight from$64
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$96
19:38 — 08:50 +1 day	18:33 — 19:37 F94967 Frontier Airlines Denver — Las Vegas 9h 13m stop 15:32 — 18:26 F92407 Frontier Airlines Las Vegas — Seattle	14h 12m including layover	Find flight from$77
22:38 — 10:54 +1 day	22:38 — 00:04 F91499 Frontier Airlines Denver — Ontario 7h 54m stop 07:58 — 10:54 F93164 Frontier Airlines Ontario — Seattle	13h 16m including layover	Find flight from$62
22:49 — 08:57 +1 day	07:00 — 08:07 F9777 Frontier Airlines Denver — Las Vegas 5h 58m stop 06:00 — 08:57 F92407 Frontier Airlines Las Vegas — Seattle	11h 8m including layover	Find flight from$65

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

*Departure and arrival times - local. Updated on April 22, 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 00:35 to 22:59 from 2 Denver airports and arrive 00:35 to 22:59 to 3 Seattle airports. Average flight time is 3h 5m.

The fastest flight 3h 1m
Average flight time 3h 5m
The earliest flight 00:35
The latest flight 22:59
Distance 1022 ml

The cheapest months to travel to Seattle are november (from 33 $), december (from 58 $), january (from 59 $).

The most expensive months are february (from 67 $), january (from 59 $), december (from 58 $).

What is the lowest airfare Denver to Seattle?

The cheapest plane ticket found by our users is $33. 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

$33

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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 8 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 71 departures per week at the price of from $ 33 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 4322.

Direct flights

There are 24 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 $33.

F9 - Frontier Airlines

from $33

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DL - Delta Air Lines Inc.

from $113

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UA - United Airlines

from $101

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AS - Alaska Airlines

from $65

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Connecting Flights

There are 408 flights with layovers on the route. The fastest connecting flight is UA5714 by United Airlines takes 4h 24m and the cheapest is F91175 by Frontier Airlines for $62.

F9 - Frontier Airlines

from $62

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DL - Delta Air Lines Inc.

from $180

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UA - United Airlines

from $107

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AA - American Airlines

from $209

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AS - Alaska Airlines

from $115

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SY - Sun Country Airlines

from $295

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Y4 - Volaris

from $556

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AM - Aeromexico

from $625

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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 $33
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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 8 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-800

from $113

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Airbus A320

from $180

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A220-300

from $186

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Embraer 175 (short wing)

from $209

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Boeing 737-100/200

from $246

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Boeing 737-900

from $246

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Boeing 737

from $297

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Boeing 737 MAX 8

from $303

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Boeing 777

from $303

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Airbus A319

from $311

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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.
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