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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
13 Oct — 20 Oct1
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 Wednesday or Thursday 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 13 September 2026.
Thu 12/118:55 p.m. -
Nonstop3h 10m
Mon 16/119:25 a.m. -
Nonstop2h 35m
Deal found 11/9C$ 218
Sat 17/101:55 p.m. -
Nonstop3h 13m
Mon 19/108:00 p.m. -
Nonstop2h 55m
Deal found 9/9C$ 219
Sat 24/105:45 p.m. -
1 stop6h 41m
Sat 31/108:30 a.m. -
Nonstop2h 44m
Deal found 10/9C$ 226
Sat 10/106:42 p.m. -
Nonstop3h 06m
Sat 17/105:30 a.m. -
1 stop5h 26m
Deal found 10/9C$ 232
Sat 24/106:42 p.m. -
Nonstop3h 06m
Mon 26/1011:50 p.m. -
1 stop9h 12m
Deal found 10/9C$ 233
Sat 24/1012:30 p.m. -
2 stops10h 10m
Sat 31/106:15 a.m. -
Nonstop2h 40m
Deal found 10/9C$ 239
Thu 12/116:15 p.m. -
1 stop6h 42m
Fri 13/115:40 p.m. -
1 stop4h 29m
Deal found 10/9C$ 246
Tue 27/105:20 p.m. -
1 stop5h 25m
Thu 29/106:15 a.m. -
2 stops7h 30m
Deal found 10/9C$ 247
Sat 24/1012:30 p.m. -
2 stops10h 10m
Tue 27/105:35 a.m. -
1 stop5h 40m
Deal found 10/9C$ 252
Fri 2/102:05 p.m. -
Nonstop2h 58m
Sun 11/106:05 p.m. -
Nonstop2h 44m
Deal found 9/9C$ 255
Sun 4/108:02 a.m. -
Nonstop2h 59m
Sun 11/106:05 p.m. -
Nonstop2h 44m
Deal found 9/9C$ 257
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 13 September 2026.
Fri 5/26:30 a.m. -
1 stop7h 30m
Tue 9/27:40 p.m. -
Nonstop2h 48m
Deal found 10/9C$ 232
Fri 13/116:30 p.m. -
2 stops7h 45m
Tue 17/111:35 p.m. -
Nonstop2h 30m
Deal found 9/9C$ 239
Wed 3/27:00 a.m. -
Nonstop3h 09m
Thu 11/28:06 a.m. -
Nonstop2h 49m
Deal found 10/9C$ 315
Sat 17/108:20 a.m. -
1 stop7h 30m
Mon 19/108:00 p.m. -
Nonstop2h 55m
Deal found 9/9C$ 232
Fri 11/126:30 p.m. -
2 stops7h 45m
Mon 14/128:05 a.m. -
1 stop6h 25m
Deal found 10/9C$ 252
Tue 13/1012:22 p.m. -
1 stop9h 05m
Fri 16/1011:50 p.m. -
1 stop9h 12m
Deal found 10/9C$ 246
Fri 9/106:42 p.m. -
Nonstop3h 06m
Tue 13/108:00 p.m. -
Nonstop2h 55m
Deal found 10/9C$ 362
Sat 12/127:40 a.m. -
1 stop6h 25m
Tue 15/1210:09 a.m. -
Nonstop2h 44m
Deal found 12/9C$ 440
Wed 28/108:50 a.m. -
2 stops7h 05m
Sat 31/106:50 a.m. -
1 stop5h 05m
Deal found 8/9C$ 427
Tue 27/107:07 a.m. -
Nonstop3h 03m
Fri 30/107:08 a.m. -
Nonstop2h 54m
Deal found 12/9C$ 451
Thu 1/1012:45 p.m. -
2 stops8h 20m
Thu 8/1011:35 a.m. -
1 stop5h 25m
Deal found 8/9C$ 447
Mon 19/1012:45 p.m. -
2 stops8h 20m
Wed 21/108:55 a.m. -
2 stops9h 30m
Deal found 11/9C$ 454
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 13 September 2026.
Thu 12/118:55 p.m. -
Nonstop3h 10m
Mon 16/119:25 a.m. -
Nonstop2h 35m
Deal found 11/9C$ 218
Sat 17/101:55 p.m. -
Nonstop3h 13m
Mon 19/108:00 p.m. -
Nonstop2h 55m
Deal found 9/9C$ 219
Thu 1/106:00 a.m. -
Nonstop2h 59m
Thu 1/108:00 p.m. -
Nonstop2h 47m
Deal found 10/9C$ 246
Fri 2/103:40 p.m. -
Nonstop2h 57m
Mon 12/106:05 p.m. -
Nonstop2h 44m
Deal found 9/9C$ 255
Sun 4/108:02 a.m. -
Nonstop2h 59m
Sun 11/106:05 p.m. -
Nonstop2h 44m
Deal found 9/9C$ 257
Wed 7/107:14 p.m. -
Nonstop3h 01m
Wed 14/105:00 a.m. -
Nonstop2h 45m
Deal found 9/9C$ 275
Fri 2/105:41 p.m. -
Nonstop3h 00m
Sun 11/106:54 p.m. -
Nonstop2h 43m
Deal found 11/9C$ 280
Wed 7/101:07 p.m. -
Nonstop3h 01m
Sun 11/104:27 p.m. -
Nonstop2h 50m
Deal found 11/9C$ 284
Sun 4/108:02 a.m. -
Nonstop2h 59m
Mon 12/106:05 p.m. -
Nonstop2h 44m
Deal found 10/9C$ 286
Sun 22/117:40 a.m. -
Nonstop3h 07m
Tue 24/115:05 a.m. -
Nonstop2h 37m
Deal found 9/9C$ 308
Sat 30/17:00 a.m. -
Nonstop3h 09m
Thu 11/23:45 p.m. -
Nonstop2h 46m
Deal found 10/9C$ 315
Sun 11/108:58 p.m. -
Nonstop3h 01m
Sun 18/105:00 a.m. -
Nonstop2h 45m
Deal found 10/9C$ 322
Last-minute flights from Denver to Seattle
Discover last-minute flight deals from Denver to Seattle. Data last updated 13 September 2026 and is based on user searches.
Thu 1/106:00 a.m. -
Nonstop2h 59m
Thu 1/108:00 p.m. -
Nonstop2h 47m
Deal found 10/9C$ 246
Fri 2/108:58 p.m. -
Nonstop3h 01m
Sun 4/105:00 a.m. -
Nonstop2h 45m
Deal found 10/9C$ 218
Fri 2/103:40 p.m. -
Nonstop2h 57m
Mon 12/106:05 p.m. -
Nonstop2h 44m
Deal found 9/9C$ 255
Sun 4/108:02 a.m. -
Nonstop2h 59m
Sun 11/106:05 p.m. -
Nonstop2h 44m
Deal found 9/9C$ 257
Sat 10/106:42 p.m. -
Nonstop3h 06m
Sat 17/105:30 a.m. -
1 stop5h 26m
Deal found 10/9C$ 232
Sat 17/101:55 p.m. -
Nonstop3h 13m
Mon 19/108:00 p.m. -
Nonstop2h 55m
Deal found 9/9C$ 219
Sat 24/105:45 p.m. -
1 stop6h 41m
Sat 31/108:30 a.m. -
Nonstop2h 44m
Deal found 10/9C$ 226
Sat 24/106:42 p.m. -
Nonstop3h 06m
Mon 26/1011:50 p.m. -
1 stop9h 12m
Deal found 10/9C$ 233
Sat 24/1012:30 p.m. -
2 stops10h 10m
Sat 31/106:15 a.m. -
Nonstop2h 40m
Deal found 10/9C$ 239
Sat 24/1012:30 p.m. -
2 stops10h 10m
Tue 27/105:35 a.m. -
1 stop5h 40m
Deal found 10/9C$ 252
Tue 27/105:20 p.m. -
1 stop5h 25m
Thu 29/106:15 a.m. -
2 stops7h 30m
Deal found 10/9C$ 247
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 13 September 2026.
Mon 12/106:00 a.m. -
Nonstop3h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 123
Fri 6/117:15 p.m. -
2 stops7h 00m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 130
Mon 26/101:07 p.m. -
Nonstop3h 05m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 11/9C$ 132
Thu 1/106:00 a.m. -
Nonstop2h 59m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 9/9C$ 141
Thu 15/101:07 p.m. -
Nonstop3h 05m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 150
Mon 5/103:40 p.m. -
Nonstop2h 57m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 9/9C$ 153
Sun 4/108:58 p.m. -
Nonstop3h 01m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 9/9C$ 154
Tue 22/129:10 p.m. -
Nonstop3h 06m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 162
Wed 23/129:10 p.m. -
Nonstop3h 06m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 165
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 13 September 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 13 September 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
Wed 11/11
5:35 a.m.-9:12 a.m.
1 stop4h 37m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 123
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Mon 26/10
5:25 a.m.-9:10 a.m.
1 stop4h 45m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 123
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Fri 5/3
6:25 p.m.-12:11 a.m.
1 stop6h 46m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 123
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Mon 12/10
5:25 a.m.-9:10 a.m.
1 stop4h 45m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 123
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Fri 6/11
7:15 p.m.-1:15 a.m.
2 stops7h 00m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 130
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 15/10
1:45 p.m.-9:00 p.m.
2 stops8h 15m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 193
Quickest round-trip
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 4/3
9:00 p.m.-10:59 p.m.
Nonstop2h 59m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 207
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sat 30/1
5:52 p.m.-11:31 p.m.
1 stop6h 39m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 207
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 19/11
3:40 p.m.-5:50 p.m.
Nonstop3h 10m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 207
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 1/12
1:17 p.m.-3:24 p.m.
Nonstop3h 07m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 214
Flights are sorted by cheapest round-trip flights first.
Deals found on 10/9
Showing 1-10 of 24 resultsSorted by cheapest first
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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
Airlines
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$ 191). Flying from Denver to Seattle in July is currently the most expensive (average of C$ 451). 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 13 September 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 94% 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 below average for this route at the moment.
Denver to Seattle flights typically cost between C$ 270 and C$ 513 in November.The cheapest round-trip price found within the last 5 days was C$ 218 on Southwest (12 Nov-16 Nov).
Weekly flight availability from Denver to Seattle
Explore weekly flight availability from Denver to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 September 2026.
The most flights from DEN to SEA are scheduled on a Friday (45 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 on average).
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 141 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 11% 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 1 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?
Delta and Southwest can get you from Denver to Seattle in just under 3h 10m. Your travel time can differ by up to 4h 30m. 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 Frontier (90%), Korean Air (90%) or Volaris (90%) 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$ 191). Flying from Denver to Seattle in July is currently the most expensive (average of C$ 451). 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.
Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on 13 September 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 13 September 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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