This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/1. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
17 janv. — 24 janv.1
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 68 days in advance, depart on a Tuesday or Monday and return on a Monday
Cheap flight deals from Denver to Seattle
Enter your travel dates to find the best prices.
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 18 décembre 2025.
mer. 31/1205:30DEN - SEA
1 stop5h 38mDelta
lun. 5/119:40SEA - DEN
Nonstop2h 45mDelta
Deal found 15/12£177
sam. 27/1207:45DEN - SEA
Nonstop3h 11mUnited Airlines
mer. 7/115:30SEA - DEN
Nonstop2h 46mUnited Airlines
Deal found 17/12£196
mar. 30/1205:30DEN - SEA
1 stop5h 38mDelta
lun. 5/111:25SEA - DEN
1 stop7h 31mDelta
Deal found 15/12£226
sam. 27/1212:55DEN - SEA
2 stops11h 05mSouthwest
mer. 7/106:05SEA - DEN
Nonstop2h 35mSouthwest
Deal found 17/12£227
jeu. 18/1218:22DEN - SEA
1 stop6h 58mDelta
dim. 18/105:25SEA - DEN
1 stop5h 29mDelta
Deal found 17/12£230
mer. 17/1208:15DEN - SEA
2 stops9h 15mSouthwest
sam. 10/109:25SEA - DEN
1 stop5h 50mSouthwest
Deal found 15/12£248
mer. 31/1205:30DEN - SEA
1 stop5h 38mDelta
jeu. 1/119:35SEA - DEN
Nonstop2h 48mDelta
Deal found 15/12£259
mer. 31/1205:30DEN - SEA
1 stop5h 38mDelta
sam. 3/105:25SEA - DEN
1 stop4h 35mDelta
Deal found 17/12£267
mer. 31/1205:30DEN - SEA
1 stop5h 38mDelta
dim. 4/105:25SEA - DEN
1 stop4h 35mDelta
Deal found 17/12£282
ven. 26/1206:05DEN - SEA
Nonstop3h 15mDelta
mer. 31/1205:25SEA - DEN
1 stop4h 35mDelta
Deal found 16/12£286
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 18 décembre 2025.
mer. 7/112:15DEN - SEA
Nonstop3h 13mAlaska Airlines
mer. 14/119:54SEA - DEN
Nonstop2h 41mAlaska Airlines
Deal found 17/12£87
sam. 10/112:30DEN - SEA
Nonstop3h 13mDelta
mar. 13/113:45SEA - DEN
Nonstop2h 49mDelta
Deal found 16/12£87
mer. 18/207:00DEN - SEA
Nonstop3h 10mAlaska Airlines
dim. 22/208:30SEA - DEN
Nonstop2h 44mAlaska Airlines
Deal found 17/12£87
mer. 14/106:29DEN - SEA
Nonstop3h 11mDelta
mer. 21/113:45SEA - DEN
Nonstop2h 49mDelta
Deal found 16/12£87
sam. 17/112:30DEN - SEA
Nonstop3h 13mDelta
mar. 20/119:40SEA - DEN
Nonstop2h 45mDelta
Deal found 17/12£87
dim. 11/107:00DEN - SEA
Nonstop3h 11mAlaska Airlines
lun. 12/119:54SEA - DEN
Nonstop2h 41mAlaska Airlines
Deal found 15/12£87
mer. 7/107:00DEN - SEA
Nonstop3h 11mAlaska Airlines
mar. 13/119:54SEA - DEN
Nonstop2h 41mAlaska Airlines
Deal found 17/12£87
mar. 20/118:50DEN - SEA
Nonstop3h 20mDelta
dim. 25/105:00SEA - DEN
1 stop5h 51mDelta
Deal found 17/12£95
mar. 6/106:29DEN - SEA
Nonstop3h 11mDelta
lun. 12/105:25SEA - DEN
1 stop5h 29mDelta
Deal found 15/12£95
mer. 7/116:10DEN - SEA
1 stop8h 12mDelta
lun. 12/119:40SEA - DEN
Nonstop2h 45mDelta
Deal found 17/12£95
mer. 7/112:49DEN - SEA
1 stop4h 49mDelta
mer. 14/108:25SEA - DEN
Nonstop3h 02mDelta
Deal found 17/12£95
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 18 décembre 2025.
ven. 30/109:10DEN - SEA
Nonstop3h 09mFrontier
ven. 6/212:34SEA - DEN
Nonstop2h 51mFrontier
Deal found 16/12£43
mer. 7/118:50DEN - SEA
Nonstop3h 20mDelta
mer. 14/108:25SEA - DEN
Nonstop3h 02mDelta
Deal found 17/12£87
mar. 6/120:25DEN - SEA
Nonstop3h 05mSouthwest
ven. 9/106:05SEA - DEN
Nonstop2h 35mSouthwest
Deal found 16/12£102
sam. 10/119:08DEN - SEA
Nonstop3h 07mUnited Airlines
ven. 16/105:00SEA - DEN
Nonstop2h 48mUnited Airlines
Deal found 17/12£104
jeu. 15/116:40DEN - SEA
Nonstop3h 00mSouthwest
dim. 18/106:05SEA - DEN
Nonstop2h 35mSouthwest
Deal found 16/12£110
mer. 14/112:30DEN - SEA
Nonstop3h 13mDelta
dim. 18/108:25SEA - DEN
Nonstop3h 02mDelta
Deal found 16/12£117
mer. 7/118:50DEN - SEA
Nonstop3h 20mDelta
dim. 11/119:40SEA - DEN
Nonstop2h 45mDelta
Deal found 17/12£125
mar. 17/307:45DEN - SEA
Nonstop3h 04mUnited Airlines
sam. 21/305:00SEA - DEN
Nonstop2h 38mUnited Airlines
Deal found 16/12£132
jeu. 12/318:16DEN - SEA
Nonstop3h 10mAlaska Airlines
mer. 18/307:55SEA - DEN
Nonstop2h 44mAlaska Airlines
Deal found 16/12£140
ven. 23/116:20DEN - SEA
Nonstop3h 06mUnited Airlines
dim. 25/108:40SEA - DEN
Nonstop2h 52mUnited Airlines
Deal found 16/12£147
mer. 7/106:29DEN - SEA
Nonstop3h 11mDelta
jeu. 15/119:40SEA - DEN
Nonstop2h 45mDelta
Deal found 17/12£155
Last-minute flights from Denver to Seattle
Discover last-minute flight deals from Denver to Seattle. Data last updated 18 décembre 2025 and is based on user searches.
mar. 6/115:35DEN - SEA
1 stop8h 30mSouthwest
jeu. 8/106:05SEA - DEN
Nonstop2h 35mSouthwest
Deal found 16/12£110
mer. 7/118:50DEN - SEA
Nonstop3h 20mDelta
mer. 14/108:25SEA - DEN
Nonstop3h 02mDelta
Deal found 17/12£87
jeu. 8/111:49DEN - SEA
1 stop7h 54mAlaska Airlines
mer. 14/114:36SEA - DEN
1 stop8h 22mAlaska Airlines
Deal found 17/12£124
ven. 9/106:29DEN - SEA
Nonstop3h 11mDelta
dim. 11/105:25SEA - DEN
1 stop5h 29mDelta
Deal found 17/12£95
sam. 10/119:08DEN - SEA
Nonstop3h 07mUnited Airlines
ven. 16/105:00SEA - DEN
Nonstop2h 48mUnited Airlines
Deal found 17/12£104
dim. 11/108:30DEN - SEA
2 stops10h 10mSouthwest
mer. 14/106:05SEA - DEN
Nonstop2h 35mSouthwest
Deal found 17/12£121
mar. 13/112:34DEN - SEA
1 stop7h 37mAlaska Airlines
mar. 20/116:33SEA - DEN
1 stop6h 25mAlaska Airlines
Deal found 16/12£117
mer. 14/113:00DEN - SEA
1 stop6h 35mSouthwest
jeu. 15/105:15SEA - DEN
Nonstop2h 35mSouthwest
Deal found 17/12£117
ven. 23/120:25DEN - SEA
Nonstop3h 05mSouthwest
dim. 25/106:05SEA - DEN
2 stops6h 40mSouthwest
Deal found 16/12£114
ven. 30/109:10DEN - SEA
Nonstop3h 09mFrontier
ven. 6/212:34SEA - DEN
Nonstop2h 51mFrontier
Deal found 16/12£43
ven. 30/111:49DEN - SEA
1 stop4h 55mMultiple Airlines
ven. 6/212:34SEA - DEN
Nonstop2h 51mMultiple Airlines
Deal found 16/12£67
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 18 décembre 2025.
mar. 17/307:45DEN - SEA
Nonstop3h 04mUnited Airlines
Deal found 16/12£44
mar. 31/317:52DEN - SEA
1 stop6h 44mUnited Airlines
Deal found 16/12£48
mar. 3/211:49DEN - SEA
1 stop7h 54mAlaska Airlines
Deal found 16/12£51
lun. 12/112:49DEN - SEA
1 stop4h 49mDelta
Deal found 17/12£52
mar. 13/108:04DEN - SEA
1 stop7h 57mAlaska Airlines
Deal found 16/12£58
sam. 21/319:50DEN - SEA
Nonstop3h 02mAlaska Airlines
Deal found 16/12£59
mer. 18/317:47DEN - SEA
1 stop6h 41mUnited Airlines
Deal found 16/12£63
dim. 11/108:20DEN - SEA
1 stop6h 45mSouthwest
Deal found 17/12£66
jeu. 15/116:40DEN - SEA
Nonstop3h 00mSouthwest
Deal found 16/12£67
mar. 17/213:05DEN - SEA
1 stop9h 30mSouthwest
Deal found 17/12£70
mar. 6/115:35DEN - SEA
1 stop5h 45mSouthwest
Deal found 16/12£73
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 18 décembre 2025.
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 858,174 searches. Data last updated 18 décembre 2025.
Use the filters below to find and compare flights from Denver to Seattle that are best for you.
Fly from
Denver
Fly to
Seattle
Route
Depart
Return
Price
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mer. 7/1
12:15-14:28
Nonstop3h 13m
Seattle/Tacoma Intl
mer. 14/1
19:54-23:35
Nonstop2h 41m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
sam. 10/1
12:30-14:43
Nonstop3h 13m
Seattle/Tacoma Intl
mar. 13/1
13:45-17:34
Nonstop2h 49m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mer. 18/2
07:00-09:10
Nonstop3h 10m
Seattle/Tacoma Intl
dim. 22/2
08:30-12:14
Nonstop2h 44m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mer. 14/1
06:29-08:40
Nonstop3h 11m
Seattle/Tacoma Intl
mer. 21/1
13:45-17:34
Nonstop2h 49m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
sam. 17/1
12:30-14:43
Nonstop3h 13m
Seattle/Tacoma Intl
mar. 20/1
19:40-23:25
Nonstop2h 45m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
dim. 11/1
07:00-09:11
Nonstop3h 11m
Seattle/Tacoma Intl
lun. 12/1
19:54-23:35
Nonstop2h 41m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mer. 7/1
07:00-09:11
Nonstop3h 11m
Seattle/Tacoma Intl
mar. 13/1
19:54-23:35
Nonstop2h 41m
£87
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mar. 20/1
18:50-21:10
Nonstop3h 20m
Seattle/Tacoma Intl
dim. 25/1
05:00-11:51
1 stop5h 51m
£95
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mar. 6/1
06:29-08:40
Nonstop3h 11m
Seattle/Tacoma Intl
lun. 12/1
05:25-11:54
1 stop5h 29m
£95
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
mer. 7/1
16:10-23:22
1 stop8h 12m
Seattle/Tacoma Intl
lun. 12/1
19:40-23:25
Nonstop2h 45m
£95
Flights are sorted by cheapest return flights first.
Deals found on 17/12
Showing 1-10 of 21 results
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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.
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?
Use this chart to determine the optimal time to book a return flight from Denver to Seattle. Price data was last updated on 12 December 2025.
To ensure you get the cheapest price possible for a flight from Denver to Seattle, you should look to book at least 39 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, February is the cheapest month in which you can book a flight from Denver to Seattle (average of £36). Flying from Denver to Seattle in July is currently the most expensive (average of £88). 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 18 décembre 2025.
It’s typically best to fly out from Denver to Seattle in the evening. Doing so could potentially save you 34% on the flight price compared to flying in the morning, which is usually more expensive.
How often are flights from Denver to Seattle delayed?
About 19% of weekly flights between Denver and Seattle have experienced delays in the past year, with the average delay time being 145 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?
Wednesday tends to have the lowest number of delays on this route, whereas Sunday 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, Delta have had the lowest number of delays on this route, with just 13% 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 8 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. Generally, flights for this route are direct.
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: ANA (88%), Scandinavian Airlines (88%), Japan Airlines (85%).
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, February is the cheapest month in which you can book a flight from Denver to Seattle (average of £36). Flying from Denver to Seattle in July is currently the most expensive (average of £88). 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 18 décembre 2025.
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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