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$49+ Cheap flights from Colorado to Seattle (SEA)

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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
nov. 25 — dic. 21
lun. 11/25
lun. 12/2
1 adult, Economy
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Cheap flight deals from Colorado to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) to Seattle (SEA). 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 noviembre 20, 2024.

Find flight deals from Colorado to Seattle

Cheapest flights from Colorado to Seattle
Explore the most affordable flight options available from Colorado to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 20, 2024.

This Frontier deal was found by Cheapflights users on 11/20. 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.
mar. 12/1711:00 amDEN - SEA
Nonstop3h 10mFrontier
sáb. 1/410:29 amSEA - DEN
1 stop12h 10mFrontier
Deal found 11/20$83
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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.
mié. 12/186:00 amDEN - SEA
Nonstop3h 10mAlaska Airlines
mar. 1/77:45 pmSEA - DEN
Nonstop2h 44mAlaska Airlines
Deal found 11/20$117
This Delta deal was found by Cheapflights users on 11/20. 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.
jue. 12/196:29 pmDEN - SEA
1 stop6h 59mDelta
dom. 1/57:25 amSEA - DEN
Nonstop2h 50mDelta
Deal found 11/20$127
This United Airlines deal was found by Cheapflights users on 11/20. 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.
mié. 12/187:45 amDEN - SEA
1 stop8h 36mUnited Airlines
mié. 12/254:30 pmSEA - DEN
1 stop7h 05mUnited Airlines
Deal found 11/20$162
This Travelocity deal was found by Cheapflights users on 11/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/129:17 amDEN - SEA
Nonstop3h 12mMultiple Airlines
sáb. 12/144:30 pmSEA - DEN
Nonstop2h 39mMultiple Airlines
Deal found 11/19$163
This United Airlines deal was found by Cheapflights users on 11/19. 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.
mié. 12/186:00 amCOS - SEA
2 stops10h 21mUnited Airlines
dom. 1/199:00 amSEA - COS
1 stop4h 19mUnited Airlines
Deal found 11/19$211
This American Airlines deal was found by Cheapflights users on 11/19. 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.
vie. 12/64:41 pmCOS - SEA
1 stop7h 28mAmerican Airlines
mar. 12/105:23 amSEA - COS
1 stop9h 24mAmerican Airlines
Deal found 11/19$296
This United Airlines deal was found by Cheapflights users on 11/20. 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.
jue. 12/57:27 amGUC - SEA
2 stops9h 33mUnited Airlines
lun. 12/95:00 amSEA - GUC
1 stop6h 41mUnited Airlines
Deal found 11/20$343
This United deal was found by Cheapflights users on 11/20. 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.
vie. 12/61:36 pmHDN - SEA
2 stops9h 54mUnited Airlines
lun. 12/95:00 amSEA - HDN
1 stop6h 40mUnited Airlines
Deal found 11/20$343
This Delta deal was found by Cheapflights users on 11/18. 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.
mié. 12/185:56 amGJT - SEA
1 stop7h 38mDelta
lun. 12/305:30 amSEA - GJT
1 stop6h 00mDelta
Deal found 11/18$378
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/91:56 pmGJT - SEA
2 stops11h 14mMultiple Airlines
dom. 12/159:21 pmSEA - GJT
1 stop14h 45mMultiple Airlines
Deal found 11/19$409
This United Airlines deal was found by Cheapflights users on 11/19. 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.
lun. 12/93:00 pmASE - SEA
1 stop7h 05mUnited Airlines
mié. 12/185:00 amSEA - ASE
1 stop5h 23mUnited Airlines
Deal found 11/19$413

Find flights from Colorado to Seattle within your budget

Customize your flight search to find flights from Colorado to Seattle 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 2,629,791 searches. Data last updated noviembre 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

mié. 3/19

6:35 am-8:37 am

Nonstop3h 02m

Seattle/Tacoma Intl

mié. 3/26

10:08 pm-1:51 am

Nonstop2h 43m

$92

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

vie. 12/13

7:45 pm-10:10 pm

Nonstop3h 25m

Seattle/Tacoma Intl

jue. 12/19

7:25 am-11:15 am

Nonstop2h 50m

$117

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

vie. 2/21

10:30 am-12:36 pm

Nonstop3h 06m

Seattle/Tacoma Intl

mar. 2/25

7:55 am-11:42 am

Nonstop2h 47m

$138

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

mié. 1/22

4:45 pm-6:52 pm

Nonstop3h 07m

Seattle/Tacoma Intl

mar. 1/28

6:59 pm-10:36 pm

Nonstop2h 37m

$147

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mié. 1/22

4:43 pm-11:11 pm

1 stop7h 28m

Seattle/Tacoma Intl

dom. 1/26

5:22 am-3:53 pm

1 stop9h 31m

$201

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

vie. 1/24

6:35 pm-11:09 pm

1 stop5h 34m

Seattle/Tacoma Intl

lun. 1/27

5:00 am-10:53 am

1 stop4h 53m

$206

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

vie. 1/24

8:05 am-4:59 pm

2 stops9h 54m

Seattle/Tacoma Intl

lun. 1/27

7:10 am-7:26 pm

2 stops11h 16m

$216

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

mié. 12/18

7:45 am-3:21 pm

1 stop8h 36m

Seattle/Tacoma Intl

mié. 12/25

4:30 pm-12:35 am

1 stop7h 05m

$222

HaydenSeattle

HDN - SEA

HDNSEA

Hayden Yampa Valley

sáb. 2/15

2:46 pm-9:15 pm

1 stop7h 29m

Seattle/Tacoma Intl

sáb. 2/22

7:15 am-2:05 pm

1 stop5h 50m

$306

MontroseSeattle

MTJ - SEA

MTJSEA

Montrose County

lun. 1/6

2:17 pm-10:30 pm

1 stop9h 13m

Seattle/Tacoma Intl

vie. 1/10

5:00 am-12:31 pm

1 stop6h 31m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 55 results
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Best time to book a flight from Colorado to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Colorado 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 Colorado to Seattle

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

What is the cheapest month to book a flight from Colorado to Seattle?

Currently, January is the cheapest month in which you can book a flight from Colorado to Seattle (average of $238). Flying from Colorado to Seattle in July is currently the most expensive (average of $411). 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 CO to SEA?

Find hourly flight availability from Colorado to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 20, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Seattle as you normally would.

Weekly flight availability from Colorado to Seattle

Explore weekly flight availability from Colorado to Seattle. 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 noviembre 20, 2024.

The most flights from USCO to SEA are scheduled on a Tuesday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated noviembre 20, 2024.
Peruse reviews from past customers who have flown with Delta, Alaska Airlines and United Airlines from Colorado to Seattle to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Colorado to Seattle. 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 into for flights to Seattle from Colorado?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Colorado to Seattle. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How popular is this Colorado to Seattle flight route?

    This flight path from Colorado to Seattle/Tacoma Intl was viewed by 212 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 Colorado to Seattle one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $49. Delta flights start at $59 while deals on United Airlines start at $64 one-way.

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

    Most travelers choose Denver Intl - Seattle/Tacoma Intl, Colorado Springs - Seattle/Tacoma Intl or Vail Eagle County - Seattle/Tacoma Intl when deciding on the best route from Colorado to Seattle.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Colorado to Seattle on time: SWISS (100%), Air France (92%), WestJet (91%).

  • What are the cheapest flights from Colorado to Seattle?

    While on average a flight from Colorado to Seattle is generally $770, our data shows the cheapest flight currently is $49. When looking at the most popular route, (Denver Intl - Seattle/Tacoma Intl), you can expect to pay $94 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado to Seattle 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 Colorado to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Colorado to Seattle (average of $238). Flying from Colorado to Seattle in July is currently the most expensive (average of $411). 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 Colorado to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Denver to Portland flights

Top 6 airlines flying from Colorado to Seattle

Discover the top 6 airlines that operate flights from Colorado to Seattle. 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 2,629,791 searches. Data last updated noviembre 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$125FlexibilityNo cancel feeOn-time62%
DeltaCheapest$88Average$375FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$119Average$422FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$136Average$511FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$140Average$316FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$196Average$430FlexibilityNo cancel feeOn-time71%
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