This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
29 Nov — 6 Dec1
Return
1 adult
Economy
Return
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 Monday
Cheap flight deals from Denver to Seattle
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
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 2/1215:22 -
Nonstop3h 09m
Wed 2/1219:36 -
2 stops16h 20m
Deal found 27/10£134
Fri 11/1207:00 -
Nonstop3h 13m
Fri 11/1213:12 -
2 stops7h 16m
Deal found 27/10£169
Thu 3/1206:00 -
Nonstop3h 18m
Mon 7/1219:59 -
Nonstop2h 49m
Deal found 30/10£170
Tue 8/1212:08 -
Nonstop3h 10m
Thu 10/1207:38 -
1 stop5h 46m
Deal found 30/10£178
Sat 5/1212:30 -
2 stops8h 40m
Wed 9/1206:10 -
Nonstop2h 35m
Deal found 27/10£181
Thu 3/1206:00 -
Nonstop3h 18m
Sun 6/1208:30 -
Nonstop2h 52m
Deal found 29/10£189
Mon 16/1119:59 -
1 stop15h 54m
Tue 17/1113:59 -
Nonstop2h 40m
Deal found 27/10£191
Tue 1/1207:40 -
1 stop6h 25m
Tue 1/1214:47 -
Nonstop2h 39m
Deal found 27/10£192
Sat 5/1218:35 -
Nonstop3h 11m
Tue 8/1219:59 -
Nonstop2h 49m
Deal found 30/10£193
Tue 8/1212:35 -
2 stops7h 05m
Fri 11/1213:55 -
Nonstop2h 35m
Deal found 25/10£193
Mon 9/1108:20 -
1 stop9h 36m
Mon 9/1118:59 -
Nonstop2h 39m
Deal found 27/10£196
Best flights from Denver to Seattle
Discover carefully curated flight deals from Denver to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Sat 5/1218:35 -
Nonstop3h 11m
Mon 7/1213:55 -
Nonstop2h 45m
Deal found 27/10£170
Wed 25/1118:35 -
1 stop8h 10m
Wed 2/1206:30 -
2 stops9h 55m
Deal found 28/10£189
Mon 21/1221:10 -
Nonstop3h 06m
Tue 29/1219:10 -
Nonstop2h 45m
Deal found 25/10£200
Tue 1/1207:40 -
1 stop6h 25m
Tue 1/1220:09 -
1 stop15h 47m
Deal found 27/10£206
Fri 5/218:18 -
Nonstop3h 10m
Tue 9/213:31 -
Nonstop2h 46m
Deal found 29/10£200
Thu 10/1214:25 -
2 stops10h 10m
Thu 17/1206:45 -
1 stop8h 00m
Deal found 26/10£204
Thu 31/1211:49 -
1 stop6h 15m
Tue 5/114:36 -
1 stop6h 39m
Deal found 25/10£222
Fri 1/111:49 -
1 stop5h 05m
Mon 4/108:31 -
1 stop4h 37m
Deal found 29/10£223
Thu 18/206:00 -
1 stop7h 10m
Sun 21/206:45 -
2 stops8h 45m
Deal found 28/10£226
Fri 4/1208:45 -
2 stops8h 15m
Sun 6/1207:30 -
2 stops9h 25m
Deal found 28/10£226
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.
Thu 3/1206:00 -
Nonstop3h 18m
Mon 7/1219:59 -
Nonstop2h 49m
Deal found 30/10£170
Tue 8/1207:00 -
Nonstop3h 13m
Wed 23/1220:14 -
Nonstop2h 45m
Deal found 27/10£181
Fri 20/1106:01 -
Nonstop3h 10m
Tue 1/1210:09 -
Nonstop2h 44m
Deal found 28/10£185
Wed 25/1121:55 -
Nonstop3h 04m
Mon 30/1120:16 -
Nonstop2h 43m
Deal found 29/10£189
Tue 22/1218:28 -
Nonstop3h 08m
Sat 26/1220:14 -
Nonstop2h 45m
Deal found 30/10£193
Fri 20/1121:55 -
Nonstop3h 04m
Sat 2/117:05 -
Nonstop2h 39m
Deal found 27/10£196
Tue 22/1206:00 -
Nonstop3h 10m
Sun 27/1220:14 -
Nonstop2h 45m
Deal found 30/10£200
Fri 11/1213:17 -
Nonstop3h 07m
Sun 10/108:25 -
Nonstop2h 59m
Deal found 29/10£204
Thu 10/1219:24 -
Nonstop3h 16m
Thu 17/1213:50 -
Nonstop2h 40m
Deal found 26/10£205
Sun 20/1206:05 -
Nonstop3h 18m
Sun 27/1219:57 -
Nonstop2h 49m
Deal found 30/10£208
Mon 21/1221:00 -
Nonstop3h 10m
Mon 28/1220:40 -
Nonstop2h 40m
Deal found 25/10£214
Wed 10/312:49 -
Nonstop3h 01m
Wed 14/413:30 -
Nonstop2h 49m
Deal found 30/10£219
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.
Mon 9/1108:20 -
1 stop9h 36m
Mon 9/1118:59 -
Nonstop2h 39m
Deal found 27/10£196
Mon 16/1119:59 -
1 stop15h 54m
Tue 17/1113:59 -
Nonstop2h 40m
Deal found 27/10£191
Tue 17/1113:55 -
2 stops8h 08m
Wed 18/1108:45 -
1 stop4h 42m
Deal found 27/10£201
Fri 20/1106:01 -
Nonstop3h 10m
Tue 1/1210:09 -
Nonstop2h 44m
Deal found 28/10£185
Fri 20/1121:55 -
Nonstop3h 04m
Sat 2/117:05 -
Nonstop2h 39m
Deal found 27/10£196
Fri 20/1106:01 -
Nonstop3h 10m
Mon 30/1120:16 -
Nonstop2h 43m
Deal found 28/10£204
Sat 21/1121:55 -
Nonstop3h 04m
Sat 5/1208:46 -
2 stops11h 53m
Deal found 29/10£197
Mon 23/1118:51 -
Nonstop3h 09m
Thu 3/1215:50 -
1 stop4h 38m
Deal found 29/10£178
Tue 24/1106:01 -
Nonstop3h 10m
Thu 3/1219:35 -
Nonstop2h 40m
Deal found 29/10£170
Tue 24/1118:51 -
Nonstop3h 09m
Tue 8/1210:09 -
Nonstop2h 44m
Deal found 25/10£193
Wed 25/1121:55 -
Nonstop3h 04m
Mon 30/1120:16 -
Nonstop2h 43m
Deal found 29/10£189
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.
Tue 1/1213:17 -
Nonstop3h 07m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£85
Tue 15/1217:52 -
1 stop6h 52m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£89
Tue 15/1207:40 -
1 stop6h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£93
Tue 8/1215:10 -
2 stops8h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£97
Tue 29/1221:10 -
Nonstop3h 06m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10£100
Fri 20/1106:00 -
Nonstop3h 12m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£100
Thu 19/1106:00 -
Nonstop3h 12m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£103
Sun 6/1206:00 -
Nonstop3h 18m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£104
Thu 24/1217:45 -
1 stop6h 33m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£108
Mon 7/1213:54 -
2 stops8h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£109
Thu 19/1115:40 -
Nonstop3h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£111
Sun 20/1221:00 -
Nonstop3h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£112
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.
Customise 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 return flight
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Tue 8/12
07:40-11:40
1 stop5h 00m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£93
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 3/12
08:45-16:00
2 stops8h 15m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£97
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sat 2/1
06:00-08:10
Nonstop3h 10m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£97
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 11/2
12:20-14:31
Nonstop3h 11m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£104
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sun 20/12
06:05-08:23
Nonstop3h 18m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£104
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sun 6/12
19:24-21:40
Nonstop3h 16m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£104
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 24/12
12:35-18:40
2 stops7h 05m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£118
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 15/4
12:20-14:31
Nonstop3h 11m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£123
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Sat 2/1
18:33-00:10
1 stop6h 37m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£130
DenverSeattle
DEN Denver Intl - SEA Seattle/Tacoma Intl
DENSEA
Denver Intl
Thu 19/11
07:40-14:39
1 stop7h 59m
Seattle/Tacoma Intl
Wed 31/12
00:00-01:00
Nonstop0h 00m
£132
Flights are sorted by cheapest return flights first.
Deals found on 29/10
Showing 1-10 of 22 resultsSorted by cheapest first
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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 return 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?
To ensure you get the cheapest price possible for a flight from Denver to Seattle, you should look to book at least 46 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 £108). Flying from Denver to Seattle in July is currently the most expensive (average of £244). 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.
It’s typically best to fly out from Denver to Seattle in the evening. Doing so could potentially save you 77% on the flight price compared to flying in the afternoon, which is usually more expensive.
How much does it cost for a return flight from Denver to Seattle?
Airfare is typical for this route at the moment.
Denver to Seattle flights typically cost between £123 and £269 in December.The cheapest return price found within the last 5 days was £134 on Alaska Airlines (2 Dec–2 Dec).
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 have 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?
The Denver Intl to Seattle/Tacoma Intl flight path was viewed by 14 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?
Departing from Denver to Seattle will take you 3h 09m. Denver and Seattle are separated by a distance of 1022 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most reliable airlines from Denver to Seattle?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Seattle on time: Korean Air (98%), Frontier (96%), Volaris (96%).
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 holiday 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 £108). Flying from Denver to Seattle in July is currently the most expensive (average of £244). 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 travellers 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?
Deals for Denver to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Denver to Seattle?
Cheapflights helps you find that perfect flight to Seattle from Denver by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
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?
Not ready to book yet? You can track prices for flights from Denver to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.
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