$79+ Cheap flights from Seattle (SEA) to Colorado
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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Seattle to Colorado with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Colorado
Keep the following information in mind while searching for Seattle to Colorado flight deals. Data was last updated June 14, 2025.
Round-trip from | $139 (Frontier) |
|---|---|
One-way from | $79 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $225 |
Good round-trip deal | $200 or less |
Good one-way deal | $121 or less |
Find flight deals from Seattle to Colorado
Cheapest flights from Seattle to ColoradoExplore the most affordable flight options available from Seattle to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2025.
Explore the most affordable flight options available from Seattle to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2025.
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Colorado 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 2,558,603 searches. Data last updated June 14, 2025.
Use the filters below to find and compare flights from Seattle to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Sat 7/12
6:25 am-10:14 am
Nonstop2h 49m
Denver Intl
Sun 7/13
10:29 pm-12:34 am
Nonstop3h 05m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 7/30
7:20 am-11:05 am
Nonstop2h 45m
Denver Intl
Sat 8/16
6:35 am-8:29 am
Nonstop2h 54m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 8/13
5:15 am-8:50 am
Nonstop2h 35m
Denver Intl
Thu 8/28
2:55 pm-8:20 pm
1 stop6h 25m
SeattleColorado Springs
SEA - COS
SEACOS
Seattle/Tacoma Intl
Tue 8/19
11:30 pm-10:01 am
1 stop9h 31m
Colorado Springs
Thu 8/21
5:07 pm-12:54 am
1 stop8h 47m
SeattleColorado Springs
SEA - COS
SEACOS
Seattle/Tacoma Intl
Wed 7/2
12:55 pm-10:55 pm
1 stop9h 00m
Colorado Springs
Wed 7/9
7:35 pm-1:15 am
1 stop6h 40m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Wed 7/30
5:59 pm-9:47 pm
Nonstop2h 48m
Denver Intl
Fri 8/15
11:33 am-3:24 pm
1 stop4h 51m
SeattleColorado Springs
SEA - COS
SEACOS
Seattle/Tacoma Intl
Wed 9/3
11:55 pm-10:16 am
1 stop9h 21m
Colorado Springs
Sat 9/6
5:55 pm-10:15 pm
1 stop5h 20m
SeattleDurango
SEA - DRO
SEADRO
Seattle/Tacoma Intl
Tue 10/7
11:51 am-8:48 pm
1 stop7h 57m
Durango La Plata County
Sat 10/11
12:38 pm-9:19 pm
1 stop9h 41m
SeattleGrand Junction
SEA - GJT
SEAGJT
Seattle/Tacoma Intl
Wed 7/16
5:30 am-12:36 pm
1 stop6h 06m
Grand Junction Regnl
Mon 7/21
6:50 pm-11:59 pm
1 stop6h 09m
SeattleDenver
SEA - DEN
SEADEN
Seattle/Tacoma Intl
Thu 7/10
5:25 am-10:37 am
1 stop4h 12m
Denver Intl
Sun 7/13
6:00 am-8:01 am
Nonstop3h 01m
Best time to book a flight from Seattle to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Seattle with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Colorado
What is the cheapest month to book a flight from Seattle to Colorado?
Currently, October is the cheapest month in which you can book a flight from Seattle to Colorado (average of $197). Flying from Seattle to Colorado in March is currently the most expensive (average of $278). 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 CO?
Find hourly flight availability from Seattle to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 14, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Colorado as you normally would.
Weekly flight availability from Seattle to Colorado
Explore weekly flight availability from Seattle to Colorado. 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 June 14, 2025.
The most flights from SEA to USCO are scheduled on a Friday (55 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).
Rainfall in Colorado by month
Plan your trip to Colorado by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.
Temperature in Colorado by month
Plan your trip to Colorado by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated June 14, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Seattle to Colorado by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Boarding
Food
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Related info for your journey
Find useful and relevant information for your journey from Seattle to Colorado. 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 Colorado
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from Seattle to Colorado
Discover the top 7 airlines that operate flights from Seattle to Colorado. 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 2,558,603 searches. Data last updated June 14, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$148 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$237 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$108 | Average$344 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$121 | Average$388 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$148 | Average$496 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$159 | Average$408 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$176 | Average$416 | FlexibilityNo cancel fee | On-time71% |