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$41+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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Cheap flight deals from Seattle to Colorado

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Colorado (USCO). 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 December 19, 2024.

Round-trip from

$68
(Frontier)

One-way from

$41
(Mytrip)
From Seattle/Tacoma Intl to Colorado
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One-way flight from Seattle/Tacoma Intl to Colorado
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Find flight deals from Seattle to Colorado

Cheapest flights from Seattle to Colorado
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 December 19, 2024.

This Frontier deal was found by Cheapflights users on 12/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/319:36 pmSEA - DEN
Nonstop2h 45mFrontier
Fri 1/1012:10 pmDEN - SEA
Nonstop3h 09mFrontier
Deal found 12/18$148
This Delta deal was found by Cheapflights users on 12/18. 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.
Tue 12/316:25 pmSEA - DEN
Nonstop2h 46mDelta
Wed 1/87:50 pmDEN - SEA
Nonstop3h 17mDelta
Deal found 12/18$256
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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.
Tue 12/313:42 pmSEA - DEN
Nonstop2h 40mAlaska Airlines
Wed 1/87:00 amDEN - SEA
Nonstop3h 19mAlaska Airlines
Deal found 12/18$276
This Expedia deal was found by Cheapflights users on 12/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/199:36 pmSEA - DEN
Nonstop2h 45mMultiple Airlines
Sun 1/56:00 amDEN - SEA
Nonstop3h 14mMultiple Airlines
Deal found 12/18$332
This United deal was found by Cheapflights users on 12/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/275:00 amSEA - DEN
Nonstop2h 43mUnited Airlines
Wed 1/16:00 amDEN - SEA
1 stop6h 30mUnited Airlines
Deal found 12/18$342
This Delta deal was found by Cheapflights users on 12/18. 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.
Fri 12/275:05 pmSEA - GJT
1 stop4h 25mDelta
Fri 1/171:25 pmGJT - SEA
1 stop6h 21mDelta
Deal found 12/18$388
This Southwest deal was found by Cheapflights users on 12/18. 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.
Thu 12/1911:30 amSEA - DEN
1 stop8h 05mSouthwest
Sun 1/54:55 pmDEN - SEA
2 stops7h 35mSouthwest
Deal found 12/18$416
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Fri 12/275:00 amSEA - GJT
1 stop6h 23mUnited Airlines
Fri 1/175:30 amGJT - SEA
2 stops11h 15mUnited Airlines
Deal found 12/18$456
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Mon 12/2312:32 pmSEA - ASE
1 stop6h 18mUnited Airlines
Thu 12/263:25 pmASE - SEA
1 stop6h 45mUnited Airlines
Deal found 12/18$548
This Southwest deal was found by Cheapflights users on 12/18. 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.
Mon 12/305:25 pmSEA - COS
1 stop5h 15mSouthwest
Fri 1/35:25 pmCOS - SEA
1 stop7h 20mSouthwest
Deal found 12/18$577
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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.
Sat 12/211:55 pmSEA - EGE
Nonstop2h 45mAlaska Airlines
Sat 12/286:20 pmEGE - SEA
Nonstop3h 17mAlaska Airlines
Deal found 12/18$647
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Mon 12/3012:32 pmSEA - COS
2 stops10h 20mUnited Airlines
Fri 1/310:55 amCOS - SEA
2 stops11h 20mUnited Airlines
Deal found 12/18$656

Find flights from Seattle to Colorado within your budget

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 December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 1/16

4:35 pm-9:55 pm

1 stop28h 20m

Denver Intl

Fri 1/31

12:20 pm-2:25 pm

Nonstop3h 05m

$98

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 2/3

6:59 pm-10:36 pm

Nonstop2h 37m

Denver Intl

Sat 2/8

7:00 am-9:21 am

Nonstop3h 21m

$139

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 1/25

9:00 am-12:35 pm

Nonstop2h 35m

Denver Intl

Thu 1/30

3:50 pm-5:50 pm

Nonstop3h 00m

$140

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 1/8

9:00 am-12:43 pm

Nonstop2h 43m

Denver Intl

Sun 1/12

6:00 am-11:20 am

1 stop6h 20m

$144

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 2/1

6:59 pm-10:36 pm

Nonstop2h 37m

Denver Intl

Sat 2/8

10:15 pm-2:18 pm

1 stop17h 03m

$145

SeattleVail

SEA - EGE

SEAEGE

Seattle/Tacoma Intl

Sun 2/2

3:18 pm-2:38 pm

1 stop22h 20m

Vail Eagle County

Sun 2/9

3:28 pm-2:25 pm

1 stop23h 57m

$157

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 1/14

1:30 pm-7:21 pm

1 stop4h 51m

Denver Intl

Sat 1/18

6:25 am-8:39 am

Nonstop3h 14m

$169

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 2/8

6:10 am-3:19 pm

1 stop8h 09m

Denver Intl

Sat 2/15

12:11 pm-5:04 pm

1 stop5h 53m

$202

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Thu 1/9

12:35 pm-5:53 pm

1 stop4h 18m

Colorado Springs

Sat 1/11

7:30 am-1:55 pm

1 stop7h 25m

$206

SeattleColorado Springs

SEA - COS

SEACOS

Seattle/Tacoma Intl

Sat 2/1

5:22 am-3:53 pm

1 stop9h 31m

Colorado Springs

Sat 2/8

5:03 pm-11:31 pm

1 stop7h 28m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 56 results
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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.
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.

Travel insights for flights from Seattle to Colorado

Get recent, data-driven insights about flights from Seattle to Colorado including ideal travel times, pricing trends, and more.

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 $271). 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 December 19, 2024.

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 December 19, 2024.

The most flights from SEA to USCO are scheduled on a Thursday (41 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 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 December 19, 2024.
Get a feel of what it's like to fly with Alaska Airlines, United Airlines and Southwest 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.
Southwest
8.1
Very good
4,836 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,836 reviews
Southwest
8.1
Very good
4,836 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,836 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,600 reviews
Southwest
8.1
Very good
4,836 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,048 reviews
Southwest
8.1
Very good
4,836 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,836 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.

  • What airport do you fly from for flights from Seattle to Colorado?

    For a flight from Seattle to Colorado, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

  • How popular is this Seattle to Colorado flight route?

    The Seattle/Tacoma Intl to Colorado flight path was viewed by 330 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Seattle to Colorado one-way?

    $41 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from $70 and $89, respectively.

  • What are the most popular routes from Seattle to Colorado?

    The most popular flight routes from Seattle to Colorado are Seattle/Tacoma Intl - Denver Intl, Seattle/Tacoma Intl - Colorado Springs and Seattle/Tacoma Intl - Aspen Pitkin County.

  • What are the most reliable airlines from Seattle to Colorado?

    The top 3 most reliable airlines when flying from Seattle to Colorado are United Airlines (95%), Japan Airlines (92%) and ANA (91%).

  • What are the cheapest flights from Seattle to Colorado?

    On average you can expect to pay $742 for a flight from Seattle to Colorado. The cheapest flight overall is $68 while the most popular route, (Seattle/Tacoma Intl - Denver Intl) is currently priced at $106.

  • Can I find deals for flights from Seattle to Colorado that include hotel bookings?

    Yes. In addition to deals on Seattle to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Colorado.

  • Can I find deals for business class flights from Seattle to Colorado?

    Yes. Cheapflights offers flight deals from Seattle to Colorado 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 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 $271). 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.

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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.
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Top 6 airlines flying from Seattle to Colorado

Discover the top 6 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 December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$129FlexibilityNo cancel feeOn-time62%
DeltaCheapest$87Average$422FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$117Average$436FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$118Average$327FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$127Average$505FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$188Average$416FlexibilityNo cancel feeOn-time71%
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