This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
29 Nov — 6 Dec1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Denver Intl to Seattle/Tacoma Intl are usually found in January or February, booked 47 days in advance, depart on a Monday or Tuesday and return on a Thursday
Cheap flight deals from Denver to Seattle
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Cheapest flights from Denver to Seattle
Explore the most affordable flight options available from Denver to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.
Wed 2/123:22 p.m. -
Nonstop3h 09m
Wed 2/127:36 p.m. -
2 stops16h 20m
Deal found 27/10C$ 250
Tue 24/116:42 a.m. -
1 stop6h 55m
Tue 1/127:25 a.m. -
Nonstop2h 45m
Deal found 27/10C$ 291
Fri 11/127:00 a.m. -
Nonstop3h 13m
Fri 11/121:12 p.m. -
2 stops7h 16m
Deal found 27/10C$ 315
Thu 3/126:35 p.m. -
Nonstop3h 11m
Tue 8/121:55 p.m. -
Nonstop2h 45m
Deal found 29/10C$ 317
Tue 8/1212:08 p.m. -
Nonstop3h 10m
Thu 10/127:38 a.m. -
1 stop5h 46m
Deal found 29/10C$ 331
Sat 5/1212:30 p.m. -
2 stops8h 40m
Wed 9/126:10 a.m. -
Nonstop2h 35m
Deal found 27/10C$ 338
Tue 24/117:20 a.m. -
1 stop9h 47m
Tue 1/123:00 p.m. -
1 stop8h 35m
Deal found 27/10C$ 344
Thu 3/126:00 a.m. -
Nonstop3h 18m
Sun 6/128:30 a.m. -
Nonstop2h 52m
Deal found 29/10C$ 352
Mon 16/117:59 p.m. -
1 stop15h 54m
Tue 17/111:59 p.m. -
Nonstop2h 40m
Deal found 27/10C$ 357
Tue 1/127:40 a.m. -
1 stop6h 25m
Tue 1/122:47 p.m. -
Nonstop2h 39m
Deal found 27/10C$ 358
Best flights from Denver to Seattle
Discover carefully curated flight deals from Denver to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Wed 25/116:35 p.m. -
1 stop8h 10m
Wed 2/126:30 a.m. -
2 stops9h 55m
Deal found 28/10C$ 352
Mon 7/121:17 p.m. -
Nonstop3h 07m
Thu 24/127:57 p.m. -
Nonstop2h 49m
Deal found 26/10C$ 352
Tue 22/126:28 p.m. -
Nonstop3h 08m
Fri 25/125:05 p.m. -
Nonstop2h 39m
Deal found 28/10C$ 373
Sun 6/127:24 p.m. -
Nonstop3h 16m
Tue 8/1210:09 a.m. -
Nonstop2h 44m
Deal found 30/10C$ 373
Tue 22/126:05 a.m. -
Nonstop3h 18m
Sun 27/127:57 p.m. -
Nonstop2h 49m
Deal found 25/10C$ 373
Thu 10/122:25 p.m. -
2 stops10h 10m
Sun 13/127:30 a.m. -
2 stops9h 25m
Deal found 29/10C$ 394
Tue 1/127:40 a.m. -
1 stop6h 25m
Tue 1/128:09 p.m. -
1 stop15h 47m
Deal found 27/10C$ 385
Tue 24/116:35 p.m. -
1 stop8h 10m
Tue 1/125:40 a.m. -
2 stops9h 50m
Deal found 28/10C$ 415
Sat 27/26:30 p.m. -
Nonstop3h 11m
Thu 11/36:05 a.m. -
1 stop8h 51m
Deal found 26/10C$ 422
Tue 15/121:54 p.m. -
2 stops19h 22m
Mon 21/128:14 p.m. -
Nonstop2h 45m
Deal found 30/10C$ 406
Fri 4/128:45 a.m. -
2 stops8h 15m
Sun 6/127:30 a.m. -
2 stops9h 25m
Deal found 28/10C$ 422
Direct flights from Denver to Seattle
Explore direct flight options from Denver to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.
Tue 24/111:14 p.m. -
Nonstop3h 08m
Tue 1/1210:09 a.m. -
Nonstop2h 44m
Deal found 27/10C$ 298
Thu 3/126:35 p.m. -
Nonstop3h 11m
Tue 8/121:55 p.m. -
Nonstop2h 45m
Deal found 29/10C$ 317
Tue 8/127:00 a.m. -
Nonstop3h 13m
Wed 23/128:14 p.m. -
Nonstop2h 45m
Deal found 27/10C$ 338
Fri 20/116:01 a.m. -
Nonstop3h 10m
Tue 1/1210:09 a.m. -
Nonstop2h 44m
Deal found 28/10C$ 345
Wed 25/119:55 p.m. -
Nonstop3h 04m
Mon 30/118:16 p.m. -
Nonstop2h 43m
Deal found 29/10C$ 352
Tue 22/126:28 p.m. -
Nonstop3h 08m
Sat 26/128:14 p.m. -
Nonstop2h 45m
Deal found 30/10C$ 359
Fri 20/119:55 p.m. -
Nonstop3h 04m
Sat 2/15:05 p.m. -
Nonstop2h 39m
Deal found 27/10C$ 366
Tue 22/126:28 p.m. -
Nonstop3h 08m
Fri 25/125:05 p.m. -
Nonstop2h 39m
Deal found 29/10C$ 373
Fri 11/121:17 p.m. -
Nonstop3h 07m
Sun 13/127:59 p.m. -
Nonstop2h 49m
Deal found 28/10C$ 380
Sun 20/126:05 a.m. -
Nonstop3h 18m
Sun 27/127:57 p.m. -
Nonstop2h 49m
Deal found 29/10C$ 387
Mon 21/129:00 p.m. -
Nonstop3h 10m
Mon 28/128:40 p.m. -
Nonstop2h 40m
Deal found 25/10C$ 400
Wed 10/36:30 p.m. -
Nonstop3h 11m
Wed 14/47:40 p.m. -
Nonstop2h 48m
Deal found 29/10C$ 408
Last-minute flights from Denver to Seattle
Discover last-minute flight deals from Denver to Seattle. Data last updated 30 October 2026 and is based on user searches.
Wed 4/1112:05 p.m. -
2 stops10h 35m
Mon 23/112:35 p.m. -
2 stops7h 40m
Deal found 28/10C$ 634
Thu 5/1112:54 p.m. -
1 stop6h 39m
Tue 1/1210:09 a.m. -
Nonstop2h 44m
Deal found 27/10C$ 411
Thu 5/117:15 p.m. -
2 stops7h 05m
Tue 1/127:40 a.m. -
1 stop6h 35m
Deal found 27/10C$ 592
Fri 6/117:59 p.m. -
1 stop21h 57m
Sat 7/116:59 p.m. -
Nonstop2h 39m
Deal found 30/10C$ 485
Sun 8/116:00 a.m. -
Nonstop3h 10m
Wed 18/111:52 p.m. -
Nonstop2h 45m
Deal found 26/10C$ 494
Sun 8/117:03 a.m. -
Nonstop3h 04m
Wed 18/116:59 p.m. -
Nonstop2h 39m
Deal found 29/10C$ 529
Mon 9/118:20 a.m. -
1 stop9h 36m
Mon 9/116:59 p.m. -
Nonstop2h 39m
Deal found 27/10C$ 365
Mon 9/111:55 p.m. -
1 stop21h 58m
Tue 10/111:59 p.m. -
Nonstop2h 40m
Deal found 25/10C$ 401
Mon 9/111:50 p.m. -
1 stop5h 10m
Tue 10/115:40 a.m. -
2 stops8h 35m
Deal found 25/10C$ 629
Mon 9/115:00 a.m. -
1 stop6h 05m
Mon 9/112:35 p.m. -
2 stops7h 40m
Deal found 27/10C$ 635
One-way flights from Denver to Seattle
Search for one-way flight options from Denver to Seattle. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.
Mon 7/1210:57 p.m. -
1 stop16h 58m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 28/10C$ 158
Tue 1/121:17 p.m. -
Nonstop3h 07m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 28/10C$ 159
Fri 11/126:20 a.m. -
2 stops14h 44m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 27/10C$ 164
Tue 15/125:52 p.m. -
1 stop6h 52m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 166
Tue 15/127:40 a.m. -
1 stop6h 25m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 173
Sat 2/112:56 p.m. -
Nonstop3h 08m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 30/10C$ 180
Tue 29/129:10 p.m. -
Nonstop3h 06m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 27/10C$ 186
Fri 20/116:00 a.m. -
Nonstop3h 12m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 28/10C$ 187
Thu 19/116:00 a.m. -
Nonstop3h 12m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 26/10C$ 193
Sun 6/121:17 p.m. -
Nonstop3h 07m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 194
Thu 24/125:45 p.m. -
1 stop6h 33m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 201
Mon 7/121:54 p.m. -
2 stops8h 30m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 203
Find flight deals from Denver to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 October 2026.
Customize your flight search to find flights from Denver to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 30 October 2026.
Use the filters below to find and compare flights from Denver to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sat 26/12
6:05 a.m.-8:23 a.m.
Nonstop3h 18m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 180
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sat 5/12
8:45 a.m.-6:30 p.m.
2 stops10h 45m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 180
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 10/12
6:00 a.m.-8:18 a.m.
Nonstop3h 18m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 194
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sun 20/12
6:05 a.m.-8:23 a.m.
Nonstop3h 18m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 194
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Fri 1/1
5:00 a.m.-12:22 p.m.
1 stop8h 22m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 208
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 1/12
1:54 p.m.-8:16 a.m.
2 stops19h 22m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 211
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Mon 7/12
8:45 a.m.-4:00 p.m.
2 stops8h 15m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 215
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 24/12
12:35 p.m.-6:40 p.m.
2 stops7h 05m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 221
Quickest round-trip
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 24/11
6:00 a.m.-8:12 a.m.
Nonstop3h 12m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 222
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sun 20/12
11:20 a.m.-6:35 p.m.
2 stops8h 15m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 229
Flights are sorted by cheapest round-trip flights first.
Deals found on 26/10
Showing 1-10 of 22 resultsSorted by cheapest first
1
2
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Best time to book a flight from Denver to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Denver with our price prediction graph.
DEN-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Denver to Seattle
Prices
Delays
How far ahead should I book a flight from Denver to Seattle?
The best time to book flights from Denver to Seattle is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Denver to Seattle?
Currently, January is the cheapest month in which you can book a flight from Denver to Seattle (average of C$ 201). Flying from Denver to Seattle in July is currently the most expensive (average of C$ 456). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from DEN to SEA?
Find hourly flight availability from Denver to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 86% on flights from Denver to Seattle by exploring options for tickets in the evening.
How much does it cost to fly round-trip from Denver to Seattle?
Airfare is typical for this route at the moment.
Denver to Seattle flights typically cost between C$ 229 and C$ 502 in January.The cheapest round-trip price found within the last 5 days was C$ 248 on Alaska Airlines (26 Jan-26 Jan).
How often are flights from Denver to Seattle delayed?
About 17% of weekly flights between Denver and Seattle have experienced delays in the past year, with the average delay time being 140 minutes.
What is the most punctual flight time for Denver to Seattle flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Denver to Seattle flights?
Over the past year, Frontier has had the lowest number of delays on this route, with just 10% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Denver to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How popular is this Denver to Seattle flight route?
This flight path from Denver Intl to Seattle/Tacoma Intl was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Denver to Seattle?
Southwest, Delta, and Alaska Airlines can get you from Denver to Seattle in just under 3h 07m. Your travel time can differ by up to 5h 03m. Airlines will cover a distance of 1645 km. This flight may include one or multiple stops.
What are the most reliable airlines from Denver to Seattle?
Consider Korean Air (98%), Frontier (96%) or Volaris (96%) when booking your flight. These represent the most reliable airlines when flying from Denver to Seattle.
Can I find deals for flights from Denver to Seattle that include hotel bookings?
Yes. In addition to deals on Denver to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Denver to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Seattle.
Can I find deals for business class flights from Denver to Seattle?
Yes. Cheapflights offers flight deals from Denver to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Denver to Seattle?
Currently, January is the cheapest month in which you can book a flight from Denver to Seattle (average of C$ 201). Flying from Denver to Seattle in July is currently the most expensive (average of C$ 456). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Denver to Seattle?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Denver today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Denver to Seattle?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Denver.
Can Cheapflights find flights from Denver to Seattle with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Denver to Seattle, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Denver to Seattle become cheaper?
Yes! Start tracking prices for Denver to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.
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