This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
30 Jan — 6 Feb1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Denver Intl are usually found in January or September, booked 69 days in advance, depart on a Monday or Tuesday and return on a Tuesday
Cheap flight deals from Seattle to Denver
Enter your travel dates to find the best prices.
Cheapest flights from Seattle to Denver
Explore the most affordable flight options available from Seattle to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 December 2025.
Wed 31/1211:16SEA - DEN
1 stop5h 59mAlaska Airlines
Mon 2/211:49DEN - SEA
2 stops8h 23mAlaska Airlines
Deal found 28/12£305
Tue 30/1212:35SEA - DEN
1 stop8h 25mUnited Airlines
Fri 16/119:41DEN - SEA
1 stop6h 18mUnited Airlines
Deal found 30/12£309
Wed 31/1207:05SEA - DEN
2 stops7h 05mSouthwest
Thu 8/120:25DEN - SEA
Nonstop3h 05mSouthwest
Deal found 28/12£316
Wed 31/1205:15SEA - DEN
1 stop6h 05mSouthwest
Sat 10/113:00DEN - SEA
2 stops7h 55mSouthwest
Deal found 28/12£324
Mon 29/1220:35SEA - DEN
Nonstop2h 30mSouthwest
Mon 5/114:05DEN - SEA
2 stops10h 05mSouthwest
Deal found 29/12£331
Tue 30/1218:52SEA - DEN
Nonstop2h 40mAlaska Airlines
Wed 31/1206:02DEN - SEA
Nonstop3h 08mAlaska Airlines
Deal found 30/12£339
Tue 30/1219:35SEA - DEN
Nonstop2h 48mDelta
Wed 31/1205:30DEN - SEA
1 stop5h 38mDelta
Deal found 30/12£346
Tue 30/1205:00SEA - DEN
Nonstop2h 35mSouthwest
Thu 1/115:35DEN - SEA
2 stops7h 15mSouthwest
Deal found 29/12£350
Wed 31/1211:16SEA - DEN
1 stop5h 59mAlaska Airlines
Thu 1/107:20DEN - SEA
1 stop5h 29mAlaska Airlines
Deal found 28/12£353
Best flights from Seattle to Denver
Discover carefully curated flight deals from Seattle to Denver that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 December 2025.
Wed 28/119:40SEA - DEN
Nonstop2h 45mDelta
Tue 3/218:50DEN - SEA
Nonstop3h 20mDelta
Deal found 31/12£87
Mon 23/213:36SEA - DEN
Nonstop2h 44mAlaska Airlines
Wed 25/207:00DEN - SEA
Nonstop3h 10mAlaska Airlines
Deal found 29/12£87
Sat 24/106:25SEA - DEN
1 stop6h 35mSouthwest
Mon 26/120:25DEN - SEA
Nonstop3h 05mSouthwest
Deal found 29/12£94
Wed 28/119:54SEA - DEN
Nonstop2h 41mAlaska Airlines
Tue 3/207:00DEN - SEA
Nonstop3h 11mAlaska Airlines
Deal found 29/12£87
Wed 28/113:45SEA - DEN
Nonstop2h 49mDelta
Wed 4/206:29DEN - SEA
Nonstop3h 11mDelta
Deal found 31/12£87
Sun 1/213:45SEA - DEN
Nonstop2h 49mDelta
Sat 7/218:50DEN - SEA
Nonstop3h 20mDelta
Deal found 30/12£87
Mon 19/105:15SEA - DEN
Nonstop2h 35mSouthwest
Tue 20/115:45DEN - SEA
Nonstop3h 05mSouthwest
Deal found 30/12£102
Mon 23/213:56SEA - DEN
1 stop9h 03mAlaska Airlines
Fri 27/219:52DEN - SEA
Nonstop3h 08mAlaska Airlines
Deal found 29/12£102
Direct flights from Seattle to Denver
Explore direct flight options from Seattle to Denver based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 December 2025.
Wed 25/313:26SEA - DEN
Nonstop2h 41mAlaska Airlines
Wed 25/319:24DEN - SEA
Nonstop3h 09mAlaska Airlines
Deal found 28/12£82
Mon 23/213:36SEA - DEN
Nonstop2h 44mAlaska Airlines
Wed 25/207:00DEN - SEA
Nonstop3h 10mAlaska Airlines
Deal found 29/12£87
Tue 17/219:40SEA - DEN
Nonstop2h 45mDelta
Mon 23/206:40DEN - SEA
Nonstop3h 11mDelta
Deal found 29/12£102
Tue 24/313:35SEA - DEN
Nonstop2h 54mDelta
Wed 1/419:40DEN - SEA
Nonstop3h 12mDelta
Deal found 31/12£109
Sat 14/219:40SEA - DEN
Nonstop2h 45mDelta
Tue 17/212:30DEN - SEA
Nonstop3h 11mDelta
Deal found 30/12£116
Thu 22/106:05SEA - DEN
Nonstop2h 35mSouthwest
Sun 25/108:20DEN - SEA
Nonstop3h 05mSouthwest
Deal found 30/12£124
Fri 13/212:00SEA - DEN
Nonstop2h 50mFrontier
Fri 20/208:45DEN - SEA
Nonstop3h 10mFrontier
Deal found 30/12£125
Thu 12/205:00SEA - DEN
Nonstop2h 35mSouthwest
Mon 16/221:55DEN - SEA
Nonstop3h 15mSouthwest
Deal found 29/12£131
Tue 12/507:05SEA - DEN
Nonstop2h 49mAlaska Airlines
Thu 14/506:00DEN - SEA
Nonstop3h 05mAlaska Airlines
Deal found 29/12£139
Fri 27/311:34SEA - DEN
Nonstop2h 51mAlaska Airlines
Fri 27/319:24DEN - SEA
Nonstop3h 09mAlaska Airlines
Deal found 31/12£142
Tue 13/106:05SEA - DEN
Nonstop2h 35mSouthwest
Wed 14/115:45DEN - SEA
Nonstop3h 05mSouthwest
Deal found 30/12£145
Sun 12/407:05SEA - DEN
Nonstop2h 46mAlaska Airlines
Thu 16/407:00DEN - SEA
Nonstop3h 10mAlaska Airlines
Deal found 31/12£146
Last-minute flights from Seattle to Denver
Discover last-minute flight deals from Seattle to Denver. Data last updated 31 December 2025 and is based on user searches.
Thu 22/110:10SEA - DEN
1 stop6h 30mSouthwest
Tue 27/106:00DEN - SEA
1 stop7h 05mSouthwest
Deal found 29/12£101
Thu 22/110:10SEA - DEN
1 stop6h 30mSouthwest
Mon 26/106:20DEN - SEA
1 stop7h 00mSouthwest
Deal found 29/12£116
Thu 22/110:10SEA - DEN
1 stop6h 30mSouthwest
Sun 25/108:30DEN - SEA
1 stop10h 10mSouthwest
Deal found 30/12£120
Sat 24/106:25SEA - DEN
2 stops7h 35mSouthwest
Tue 27/115:45DEN - SEA
Nonstop3h 05mSouthwest
Deal found 29/12£98
Sun 25/106:05SEA - DEN
2 stops6h 40mSouthwest
Sat 31/107:55DEN - SEA
Nonstop3h 15mSouthwest
Deal found 31/12£113
Mon 26/105:00SEA - DEN
1 stop5h 51mDelta
Mon 2/205:15DEN - SEA
1 stop5h 02mDelta
Deal found 30/12£116
Wed 28/119:54SEA - DEN
Nonstop2h 41mAlaska Airlines
Tue 3/207:00DEN - SEA
Nonstop3h 11mAlaska Airlines
Deal found 29/12£87
Fri 30/112:30SEA - DEN
Nonstop2h 43mAlaska Airlines
Mon 2/212:34DEN - SEA
1 stop7h 37mAlaska Airlines
Deal found 29/12£102
Fri 30/105:00SEA - DEN
1 stop5h 51mDelta
Sun 1/206:29DEN - SEA
Nonstop3h 11mDelta
Deal found 30/12£109
One-way flights from Seattle to Denver
Search for one-way flight options from Seattle to Denver. Find affordable one-way fares based on user searches. Data last updated 31 December 2025.
Tue 27/119:54SEA - DEN
Nonstop2h 41mAlaska Airlines
Deal found 29/12£44
Thu 22/110:10SEA - DEN
1 stop6h 30mSouthwest
Deal found 29/12£50
Wed 18/219:40SEA - DEN
Nonstop2h 45mDelta
Deal found 29/12£51
Sat 24/106:25SEA - DEN
2 stops7h 35mSouthwest
Deal found 30/12£55
Sat 31/105:00SEA - DEN
1 stop5h 51mDelta
Deal found 31/12£59
Thu 29/112:41SEA - DEN
1 stop10h 17mAlaska Airlines
Deal found 29/12£62
Fri 23/110:10SEA - DEN
1 stop6h 30mSouthwest
Deal found 30/12£65
Wed 1/407:05SEA - DEN
Nonstop2h 46mAlaska Airlines
Deal found 28/12£66
Sun 1/305:50SEA - DEN
2 stops7h 00mSouthwest
Deal found 28/12£70
Sun 17/520:07SEA - DEN
Nonstop2h 52mAlaska Airlines
Deal found 30/12£73
Find flight deals from Seattle to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Denver (DEN). 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 31 December 2025.
Customise your flight search to find flights from Seattle to Denver 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 31 December 2025.
Use the filters below to find and compare flights from Seattle to Denver that are best for you.
Fly from
Seattle
Fly to
Denver
Route
Depart
Return
Price
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 28/1
19:40-23:25
Nonstop2h 45m
Denver Intl
Tue 3/2
18:50-21:10
Nonstop3h 20m
£87
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Mon 23/2
13:36-17:20
Nonstop2h 44m
Denver Intl
Wed 25/2
07:00-09:10
Nonstop3h 10m
£87
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 28/1
19:54-23:35
Nonstop2h 41m
Denver Intl
Tue 3/2
07:00-09:11
Nonstop3h 11m
£87
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 28/1
13:45-17:34
Nonstop2h 49m
Denver Intl
Wed 4/2
06:29-08:40
Nonstop3h 11m
£87
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sun 1/2
13:45-17:34
Nonstop2h 49m
Denver Intl
Sat 7/2
18:50-21:10
Nonstop3h 20m
£87
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sat 24/1
06:25-14:00
1 stop6h 35m
Denver Intl
Mon 26/1
20:25-22:30
Nonstop3h 05m
£94
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Mon 19/1
05:15-08:50
Nonstop2h 35m
Denver Intl
Tue 20/1
15:45-17:50
Nonstop3h 05m
£102
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Mon 23/2
13:56-23:59
1 stop9h 03m
Denver Intl
Fri 27/2
19:52-22:00
Nonstop3h 08m
£102
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Tue 27/1
13:45-17:34
Nonstop2h 49m
£44
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Mon 26/1
08:40-12:32
Nonstop2h 52m
£44
Flights are sorted by cheapest return flights first.
Deals found on 31/12
Showing 1-10 of 19 results
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Best time to book a flight from Seattle to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Seattle 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 Seattle to Denver
Prices
Airlines
Delays
How far ahead should I book a flight from Seattle to Denver?
Use this chart to determine the optimal time to book a return flight from Seattle to Denver. Price data was last updated on 26 December 2025.
The price you pay for your flight from Seattle to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Denver?
Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £27). Flying from Seattle to Denver in July is currently the most expensive (average of £74). 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 SEA to DEN?
Find hourly flight availability from Seattle to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 December 2025.
One of the essential ways to save on airfare from Seattle to Denver is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 47% on airfare.
Weekly flight availability from Seattle to Denver
Explore weekly flight availability from Seattle to Denver. 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 31 December 2025.
The most flights from SEA to DEN are scheduled on a Monday (47 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (17 on average).
How often are flights from Seattle to Denver delayed?
About 18% of weekly flights between Seattle and Denver have experienced delays in the past year, with the average delay time being 134 minutes.
What is the most punctual flight time for Seattle to Denver flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday 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 Seattle to Denver flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated 31 December 2025.
Read through reviews of airlines operating flights from Seattle to Denver, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airports do I use to fly from Seattle to Denver?
Denver Intl is the airport most travelers will use when flying to Denver from Seattle/Tacoma Intl. Booking flights from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) should be relatively easy as there are 31 daily flights to Denver from 1 airline. 2h 50m is how long a flight from Seattle to Denver Intl will take if you book a nonstop flight.
How popular is this Seattle to Denver flight route?
Flights from Seattle/Tacoma Intl to Denver Intl have been viewed 6 times in the past calendar month.
How long is the flight from Seattle to Denver?
Departing from Seattle to Denver will take you 2h 41m. The distance between Seattle and Denver is about 1022 mi. All flights are typically direct.
What is the cheapest airline to fly from Seattle to Denver round-trip?
Flying on Delta is currently your cheapest option to Denver, with prices starting at £161.
What are the most reliable airlines from Seattle to Denver?
No one likes to see their flight delayed. When booking a flight from Seattle to Denver consider choosing United Airlines (95%), Virgin Atlantic (94%) or ANA (93%) as they are the most reliable in getting you off to your destination on time.
Can I find deals for flights from Seattle to Denver that include hotel bookings?
Yes. In addition to deals on Seattle to Denver flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to Denver?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Denver.
Can I find deals for business class flights from Seattle to Denver?
Yes. Cheapflights offers flight deals from Seattle to Denver 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 Seattle to Denver?
Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £27). Flying from Seattle to Denver in July is currently the most expensive (average of £74). 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 Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 31 December 2025.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 31 December 2025.
Discover the top airline that operate flights from Seattle to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 31 December 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 Seattle to Denver?
Cheapflights makes it easy to find Seattle to Denver flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Denver?
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 Denver from Seattle.
Can Cheapflights find flights from Seattle to Denver with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Denver flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to Denver become cheaper?
Of course! You can now track prices for flights from Seattle to Denver and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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