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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
30 Nov — 7 Dec1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Denver Intl are usually found in January or February, booked 74 days in advance, depart on a Thursday or Friday and return on a Monday
Cheap flight deals from Seattle to Denver
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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 October 2026.
Tue 15/127:25 a.m. -
Nonstop2h 45m
Sat 19/1210:08 a.m. -
Nonstop3h 14m
Deal found 26/10C$ 276
Fri 27/114:37 p.m. -
Nonstop2h 48m
Fri 4/121:32 p.m. -
Nonstop3h 08m
Deal found 30/10C$ 304
Sat 5/1210:09 a.m. -
Nonstop2h 44m
Sat 5/123:22 p.m. -
Nonstop3h 09m
Deal found 28/10C$ 310
Thu 3/128:30 a.m. -
Nonstop2h 52m
Wed 9/126:00 a.m. -
Nonstop3h 18m
Deal found 28/10C$ 317
Tue 1/1210:09 a.m. -
Nonstop2h 44m
Wed 9/127:40 a.m. -
1 stop6h 25m
Deal found 28/10C$ 331
Sat 12/1210:55 a.m. -
Nonstop2h 35m
Tue 15/1212:35 p.m. -
2 stops7h 05m
Deal found 26/10C$ 332
Tue 10/117:48 p.m. -
1 stop12h 57m
Sat 14/1112:54 p.m. -
1 stop6h 39m
Deal found 26/10C$ 335
Sat 5/126:45 a.m. -
Nonstop2h 30m
Thu 10/122:25 p.m. -
2 stops10h 10m
Deal found 28/10C$ 338
Tue 8/127:25 a.m. -
Nonstop2h 45m
Tue 8/121:54 p.m. -
1 stop6h 24m
Deal found 28/10C$ 344
Thu 19/117:23 a.m. -
Nonstop2h 51m
Fri 27/119:55 p.m. -
Nonstop3h 04m
Deal found 28/10C$ 345
Best flights from Seattle to Denver
Discover carefully curated flight deals from Seattle to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 31 October 2026.
Wed 2/126:10 a.m. -
Nonstop2h 35m
Sat 5/1212:30 p.m. -
2 stops8h 40m
Deal found 27/10C$ 338
Wed 9/122:47 p.m. -
Nonstop2h 39m
Tue 22/129:42 p.m. -
Nonstop3h 07m
Deal found 30/10C$ 359
Sat 13/23:50 p.m. -
Nonstop2h 42m
Sun 21/27:40 a.m. -
Nonstop3h 07m
Deal found 30/10C$ 373
Mon 30/118:30 a.m. -
Nonstop2h 47m
Thu 3/126:00 a.m. -
Nonstop3h 18m
Deal found 26/10C$ 451
Thu 25/211:05 p.m. -
1 stop10h 34m
Sun 28/212:49 p.m. -
Nonstop3h 01m
Deal found 27/10C$ 401
Fri 26/212:50 p.m. -
2 stops9h 10m
Wed 3/33:40 p.m. -
1 stop7h 20m
Deal found 29/10C$ 408
Tue 15/128:05 a.m. -
2 stops8h 00m
Sat 19/126:25 p.m. -
2 stops8h 10m
Deal found 26/10C$ 422
Mon 14/121:55 p.m. -
Nonstop2h 45m
Thu 17/126:19 p.m. -
1 stop6h 34m
Deal found 26/10C$ 487
Fri 11/121:40 p.m. -
2 stops9h 05m
Fri 18/124:25 p.m. -
2 stops8h 20m
Deal found 27/10C$ 434
Sat 13/27:30 a.m. -
2 stops8h 20m
Sun 21/28:35 a.m. -
Nonstop3h 15m
Deal found 30/10C$ 436
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 October 2026.
Tue 15/127:25 a.m. -
Nonstop2h 45m
Sat 19/1210:08 a.m. -
Nonstop3h 14m
Deal found 26/10C$ 276
Fri 27/114:37 p.m. -
Nonstop2h 48m
Fri 4/121:32 p.m. -
Nonstop3h 08m
Deal found 30/10C$ 304
Sat 5/1210:09 a.m. -
Nonstop2h 44m
Sat 5/123:22 p.m. -
Nonstop3h 09m
Deal found 28/10C$ 310
Thu 3/128:30 a.m. -
Nonstop2h 52m
Wed 9/126:00 a.m. -
Nonstop3h 18m
Deal found 28/10C$ 317
Tue 15/122:47 p.m. -
Nonstop2h 39m
Sat 2/16:00 a.m. -
Nonstop3h 10m
Deal found 27/10C$ 338
Thu 19/117:23 a.m. -
Nonstop2h 51m
Fri 27/119:55 p.m. -
Nonstop3h 04m
Deal found 28/10C$ 345
Sun 6/127:59 p.m. -
Nonstop2h 49m
Thu 10/126:00 a.m. -
Nonstop3h 18m
Deal found 28/10C$ 352
Tue 22/127:57 p.m. -
Nonstop2h 49m
Tue 29/126:05 a.m. -
Nonstop3h 18m
Deal found 30/10C$ 359
Sat 19/128:14 p.m. -
Nonstop2h 45m
Thu 31/125:00 p.m. -
Nonstop3h 08m
Deal found 30/10C$ 373
Thu 4/27:54 p.m. -
Nonstop2h 45m
Sat 13/26:45 a.m. -
Nonstop3h 14m
Deal found 27/10C$ 374
Thu 19/111:59 p.m. -
Nonstop2h 40m
Sun 22/116:01 a.m. -
Nonstop3h 10m
Deal found 30/10C$ 380
Wed 25/115:05 a.m. -
Nonstop2h 37m
Wed 25/117:10 p.m. -
Nonstop3h 09m
Deal found 27/10C$ 381
Last-minute flights from Seattle to Denver
Discover last-minute flight deals from Seattle to Denver. Data last updated 31 October 2026 and is based on user searches.
Wed 4/117:48 p.m. -
1 stop12h 57m
Sat 14/1112:54 p.m. -
1 stop6h 39m
Deal found 28/10C$ 363
Wed 4/117:48 p.m. -
1 stop21h 15m
Tue 17/1112:54 p.m. -
1 stop6h 39m
Deal found 28/10C$ 369
Sat 7/117:48 p.m. -
1 stop12h 57m
Tue 17/1112:54 p.m. -
1 stop6h 39m
Deal found 28/10C$ 370
Tue 10/117:48 p.m. -
1 stop12h 57m
Sat 14/1112:54 p.m. -
1 stop6h 39m
Deal found 26/10C$ 335
Mon 16/117:23 a.m. -
Nonstop2h 51m
Mon 16/111:55 p.m. -
2 stops10h 18m
Deal found 26/10C$ 359
Tue 17/1110:06 a.m. -
Nonstop2h 52m
Tue 24/119:55 p.m. -
Nonstop3h 04m
Deal found 28/10C$ 317
Tue 17/111:59 p.m. -
Nonstop2h 40m
Tue 1/127:40 a.m. -
1 stop6h 25m
Deal found 27/10C$ 331
Thu 19/117:23 a.m. -
Nonstop2h 51m
Fri 27/119:55 p.m. -
Nonstop3h 04m
Deal found 28/10C$ 345
Fri 20/111:52 p.m. -
Nonstop2h 45m
Fri 27/116:00 a.m. -
Nonstop3h 12m
Deal found 28/10C$ 373
Wed 25/118:40 p.m. -
Nonstop2h 40m
Wed 2/123:10 p.m. -
2 stops8h 10m
Deal found 27/10C$ 366
Fri 27/114:37 p.m. -
Nonstop2h 48m
Fri 4/121:32 p.m. -
Nonstop3h 08m
Deal found 30/10C$ 304
Mon 30/118:16 p.m. -
Nonstop2h 43m
Thu 3/127:24 p.m. -
Nonstop3h 16m
Deal found 29/10C$ 352
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 October 2026.
Fri 22/14:29 p.m. -
Nonstop2h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 27/10C$ 126
Thu 3/128:30 a.m. -
Nonstop2h 52m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 159
Thu 19/1112:20 p.m. -
1 stop8h 07m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 28/10C$ 166
Thu 3/127:38 a.m. -
1 stop5h 46m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 173
Wed 25/117:04 p.m. -
Nonstop2h 41m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 28/10C$ 176
Tue 8/128:30 a.m. -
Nonstop2h 52m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 30/10C$ 180
Fri 20/119:10 a.m. -
Nonstop2h 35m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 27/10C$ 187
Mon 30/117:59 p.m. -
Nonstop2h 48m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 29/10C$ 194
Wed 6/17:00 a.m. -
2 stops8h 15m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 28/10C$ 201
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 October 2026.
Customize 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 7,457,451 searches. Data last updated 31 October 2026.
Use the filters below to find and compare flights from Seattle to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Tue 15/12
4:04 p.m.-7:45 p.m.
Nonstop2h 41m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 159
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Thu 26/11
6:00 p.m.-9:49 p.m.
Nonstop2h 49m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 159
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 25/11
8:40 p.m.-12:20 a.m.
Nonstop2h 40m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 187
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Thu 31/12
8:05 a.m.-3:30 p.m.
1 stop6h 25m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 208
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Thu 24/12
3:24 p.m.-10:35 p.m.
1 stop6h 11m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 208
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Fri 18/12
3:24 p.m.-12:34 a.m.
1 stop8h 10m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 208
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Wed 25/11
1:52 p.m.-5:37 p.m.
Nonstop2h 45m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 222
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Fri 20/11
7:55 a.m.-5:05 p.m.
2 stops8h 10m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 228
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Mon 30/11
5:35 a.m.-2:25 p.m.
1 stop7h 50m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 279
Quickest round-trip
SeattleDenver
SEA Seattle/Tacoma Intl - DEN Denver Intl
SEADEN
Seattle/Tacoma Intl
Fri 27/11
5:05 a.m.-8:41 a.m.
Nonstop2h 36m
Denver Intl
Wed 31/12
12:00 a.m.-11:00 p.m.
Nonstop0h 00m
C$ 283
Flights are sorted by cheapest round-trip flights first.
Deals found on 28/10
Showing 1-10 of 21 resultsSorted by cheapest first
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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.
SEA-DEN
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 Seattle to Denver
Prices
Delays
How far ahead should I book a flight from Seattle to Denver?
The best time to book flights from Seattle to Denver is 73 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 Seattle to Denver?
Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of C$ 223). Flying from Seattle to Denver in June is currently the most expensive (average of C$ 472). 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 October 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Seattle to Denver by exploring options for tickets in the afternoon.
What is the cheapest day to fly from Seattle to Denver?
Use this chart to determine the cheapest time to fly round-trip from Seattle to Denver. Price data was last updated on 24 October 2026.
Travelers seeking maximum savings on their Seattle to Denver flight should consider departing on Sunday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost to fly round-trip from Seattle to Denver?
Airfare is typical for this route at the moment.
Seattle to Denver flights typically cost between C$ 249 and C$ 483 in December.The cheapest round-trip price found within the last 5 days was C$ 276 on Multiple Airlines (15 Dec-19 Dec).
How often are flights from Seattle to Denver delayed?
About 17% of weekly flights between Seattle and Denver have experienced delays in the past year, with the average delay time being 137 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 Friday 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 has had the lowest number of delays on this route, with just 8% 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 October 2026.
Read through reviews of airlines operating flights from Seattle to Denver, such as Alaska Airlines,Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
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?
Booking a flight from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) is your only option if you wish to fly from Seattle to Denver. On a typical day, there are 12 flights from Seattle/Tacoma Intl to Denver Intl, all of which are around 2h 39m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Seattle/Tacoma Intl to Denver.
How popular is this Seattle to Denver flight route?
This flight path from Seattle/Tacoma Intl to Denver Intl was viewed by 79 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 Seattle to Denver?
There are many flights that can get you from Seattle to Denver in 2h 35m. Fly via Southwest, Alaska Airlines, or United Airlines to get the fastest option. There are 1645 km between Seattle and Denver. All flights are typically direct.
What are the cheapest airlines flying from Seattle to Denver round-trip?
According to our current data, Frontier (C$ 65), Delta (C$ 82), and Alaska Airlines (C$ 191) offers the cheapest pricing from Seattle to Denver. Users have found that Frontier is 82% cheaper than the other options available to this destination.
What are the most reliable airlines from Seattle to Denver?
Before booking your flight to Denver from Seattle, check out the most reliable airlines to get you to your destination on time: American Airlines (100%), SWISS (100%), Alaska Airlines( 83%).
What are the cheapest flights from Seattle to Denver?
Looking for the cheapest flight from Seattle to Denver? While on average our users pay C$ 341, our data indicates the cheapest price to be C$ 129. The most popular route (Seattle/Tacoma Intl - Denver Intl), is priced around C$ 566.
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 C$ 223). Flying from Seattle to Denver in June is currently the most expensive (average of C$ 472). 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 October 2026.
Discover the top 4 airlines 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 7,457,451 searches. Data last updated 31 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 Seattle to Denver?
Cheapflights helps you search for flights from Seattle to Denver via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Denver?
Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Denver for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Seattle to Denver with no change fees?
Yes! Cheapflights helps users easily find flights from Seattle to Denver with no change fees.
Can Cheapflights notify me if prices for flights from Seattle to Denver become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Denver from Seattle today and book when prices fit your budget.
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