Cheap flights from Seattle to Denver from C$ 119
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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Denver Intl are usually found in October or September, booked 86 days in advance, depart on a Monday or Tuesday and return on a Saturday
Cheap 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 30 June 2025.
Round-trip from | C$ 201 |
---|---|
One-way from | C$ 119 |
Popular in | December |
Cheapest in | October |
Average price | C$ 311 |
Good round-trip deal | C$ 372 or less |
Good one-way deal | C$ 171 or less |
Find flight deals from Seattle to Denver
Cheapest flights from Seattle to DenverExplore 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 30 June 2025.
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 30 June 2025.
Cheapflights Fare Finder
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 629,999 searches. Data last updated 30 June 2025.
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
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sat 25/10
6:00 a.m.-9:51 a.m.
Nonstop2h 51m
Denver Intl
Tue 28/10
11:27 a.m.-3:37 p.m.
1 stop5h 10m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Tue 16/9
3:15 p.m.-6:56 p.m.
Nonstop2h 41m
Denver Intl
Tue 23/9
7:49 p.m.-10:01 p.m.
Nonstop3h 12m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 5/11
5:20 a.m.-10:31 a.m.
1 stop4h 11m
Denver Intl
Wed 5/11
12:47 p.m.-2:50 p.m.
Nonstop3h 03m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sun 26/10
8:34 p.m.-12:26 a.m.
Nonstop2h 52m
Denver Intl
Tue 28/10
8:55 p.m.-11:02 p.m.
Nonstop3h 07m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Fri 3/10
9:00 p.m.-12:30 a.m.
Nonstop2h 30m
Denver Intl
Sun 5/10
10:40 p.m.-12:35 a.m.
Nonstop2h 55m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 13/8
11:20 a.m.-6:10 p.m.
1 stop5h 50m
Denver Intl
Wed 13/8
8:32 p.m.-10:42 p.m.
Nonstop3h 10m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Thu 18/9
6:00 p.m.-9:42 p.m.
Nonstop2h 42m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sat 1/11
5:20 a.m.-10:31 a.m.
1 stop4h 11m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 6/8
7:00 p.m.-10:51 p.m.
Nonstop2h 51m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sat 25/10
3:15 p.m.-9:46 p.m.
1 stop5h 31m
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.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Denver
How far ahead should I book a flight from Seattle to Denver?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Denver. Price data was last updated on 27 June 2025.
The best time to book flights from Seattle to Denver is 86 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, August is the cheapest month in which you can book a flight from Seattle to Denver (average of C$ 320). Flying from Seattle to Denver in December is currently the most expensive (average of C$ 484). 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 30 June 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 34% on flights from Seattle to Denver by exploring options for tickets in the evening.
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 29 June 2025.
Travelers seeking maximum savings on their Seattle to Denver flight should consider departing on Monday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 30 June 2025.
The most flights from SEA to DEN are scheduled on a Monday (56 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (29 on average).
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 30 June 2025.
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.
Comfort
Entertainment
Overall
Boarding
Food
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Entertainment
Overall
Boarding
Food
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Entertainment
Overall
Boarding
Food
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Entertainment
Overall
Boarding
Food
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Entertainment
Overall
Boarding
Food
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Entertainment
Overall
Boarding
Food
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
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.
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Alternative routes for Seattle to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Seattle to Denver
Discover the top 5 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 629,999 searches. Data last updated 30 June 2025.
Fly with Cheapflights
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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.