How popular is this Colorado to Seattle flight route?

This flight path from Colorado to Seattle/Tacoma Intl was viewed by 227 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $83. Frontier flights start at $86 while deals on Alaska Airlines start at $105 one-way.

What are the most popular routes from Colorado to Seattle?

Most travelers choose Denver Intl - Seattle/Tacoma Intl, Grand Junction Regnl - Seattle/Tacoma Intl or Durango La Plata County - Seattle/Tacoma Intl when deciding on the best route from Colorado to Seattle.

What are the cheapest flights from Colorado to Seattle?

While on average a flight from Colorado to Seattle is generally $758, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Denver Intl - Seattle/Tacoma Intl), you can expect to pay $145 for that flight.

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: Condor (96%), Japan Airlines (95%), KLM (94%).

What are the most popular airlines that fly from Colorado to Seattle?

The most popular airlines flying from Colorado to Seattle are Alaska Airlines, Delta and Frontier. Something to consider prior to booking your flight.

How far in advance should I book a flight from Colorado to Seattle?

To save on the cost of your flight from Colorado to Seattle, book at least 24 days before your planned departure. Booking around this time can save you about 51% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $200 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $238.

What is the cheapest month to fly from Colorado to Seattle?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, October can be a great choice for travel to Seattle. Flights to Seattle from Colorado in October are about $196 on average during October, but can be found for as low as $58.

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.

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.

$79+ Flights from Colorado to Seattle

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Cheap flight deals from Colorado to Seattle

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$135 (Cheapflightsfares)
One-way from	$83 (Kiwi.com)
Popular in	July
Cheapest in	October
Average price	$207
Good round-trip deal	$243 or less
Good one-way deal	$124 or less

Provider with most accurate pricing for Denver Intl-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Denver Intl-Seattle/Tacoma Intl flights.

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From Colorado to Seattle/Tacoma Intl

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One-way flight from Colorado to Seattle/Tacoma Intl

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Highest demand for flights based on searches. 5% potential increase in price ($12 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Colorado to Seattle/Tacoma Intl.

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Price to beat on a one-way flight from Colorado to Seattle/Tacoma Intl.

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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 April 17, 2025.

Wed 5/149:43 pmDEN - SEA

Nonstop3h 06mFrontier

Wed 5/216:24 amSEA - DEN

Nonstop2h 51mFrontier

Deal found 4/17

$135

Wed 5/149:43 pmDEN - SEA

Nonstop3h 06mMultiple Airlines

Wed 5/218:23 pmSEA - DEN

Nonstop2h 42mMultiple Airlines

Deal found 4/16

$149

Tue 5/205:15 pmDEN - SEA

1 stop7h 35mSouthwest

Wed 5/215:00 amSEA - DEN

Nonstop2h 40mSouthwest

Deal found 4/16

$167

Sat 5/176:53 pmDEN - SEA

Nonstop2h 57mDelta

Mon 5/197:10 amSEA - DEN

Nonstop2h 50mDelta

Deal found 4/16

$177

Wed 5/216:00 amDEN - SEA

Nonstop2h 59mAlaska Airlines

Mon 5/268:23 pmSEA - DEN

Nonstop2h 42mAlaska Airlines

Deal found 4/16

$187

Tue 6/247:06 pmDEN - SEA

1 stop4h 53mHawaiian Airlines

Wed 7/28:17 pmSEA - DEN

Nonstop2h 42mHawaiian Airlines

Deal found 4/17

$207

Wed 8/208:00 amCOS - SEA

1 stop7h 43mDelta

Tue 8/2611:25 amSEA - COS

1 stop4h 48mDelta

Deal found 4/16

$217

Thu 10/231:35 pmDEN - SEA

Nonstop2h 56mUnited Airlines

Fri 10/319:40 amSEA - DEN

1 stop7h 30mUnited Airlines

Deal found 4/16

$223

Sat 5/311:46 amCOS - SEA

1 stop7h 20mUnited Airlines

Wed 5/78:50 amSEA - COS

1 stop4h 53mUnited Airlines

Deal found 4/16

$237

Mon 5/54:43 pmCOS - SEA

1 stop9h 02mAmerican Airlines

Mon 5/1211:58 pmSEA - COS

1 stop8h 44mAmerican Airlines

Deal found 4/17

$257

Wed 5/71:10 pmGJT - SEA

1 stop4h 34mDelta

Sun 5/115:30 amSEA - GJT

1 stop6h 00mDelta

Deal found 4/15

$280

Fri 5/306:06 pmCOS - SEA

2 stops31h 04mMultiple Airlines

Sun 6/83:20 pmSEA - COS

2 stops24h 40mMultiple Airlines

Deal found 4/16

$284

Best flights from Colorado to Seattle
Discover carefully curated flight deals from Colorado to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2025.

Wed 5/149:43 pmDEN - SEA

Nonstop3h 06mFrontier

Wed 5/216:24 amSEA - DEN

Nonstop2h 51mFrontier

Deal found 4/17

$135

Wed 5/149:43 pmDEN - SEA

Nonstop3h 06mMultiple Airlines

Wed 5/218:23 pmSEA - DEN

Nonstop2h 42mMultiple Airlines

Deal found 4/16

$149

Tue 5/205:15 pmDEN - SEA

1 stop7h 35mSouthwest

Wed 5/215:00 amSEA - DEN

Nonstop2h 40mSouthwest

Deal found 4/16

$167

Sat 5/176:53 pmDEN - SEA

Nonstop2h 57mDelta

Mon 5/197:10 amSEA - DEN

Nonstop2h 50mDelta

Deal found 4/16

$177

Wed 5/216:00 amDEN - SEA

Nonstop2h 59mHawaiian Airlines

Mon 5/268:23 pmSEA - DEN

Nonstop2h 42mHawaiian Airlines

Deal found 4/16

$187

Wed 7/26:00 amDEN - SEA

Nonstop3h 01mAlaska Airlines

Tue 7/88:17 pmSEA - DEN

Nonstop2h 42mAlaska Airlines

Deal found 4/16

$197

Wed 4/305:15 amDEN - SEA

1 stop7h 24mUnited Airlines

Wed 5/77:00 amSEA - DEN

1 stop6h 59mUnited Airlines

Deal found 4/16

$228

Mon 5/54:43 pmCOS - SEA

1 stop9h 02mAmerican Airlines

Mon 5/1211:58 pmSEA - COS

1 stop8h 44mAmerican Airlines

Deal found 4/17

$257

Fri 6/1310:15 amDEN - SEA

1 stop13h 35mSun Country Air

Sat 6/146:24 pmSEA - DEN

1 stop13h 55mSun Country Air

Deal found 4/16

$309

Tue 5/138:00 amCOS - SEA

1 stop7h 45mDelta

Wed 5/141:30 pmSEA - COS

1 stop4h 23mDelta

Deal found 4/16

$217

Sat 5/311:46 amCOS - SEA

1 stop7h 20mUnited Airlines

Wed 5/78:50 amSEA - COS

1 stop4h 53mUnited Airlines

Deal found 4/16

$237

Fri 5/306:06 pmCOS - SEA

2 stops31h 04mMultiple Airlines

Sun 6/83:20 pmSEA - COS

2 stops24h 40mMultiple Airlines

Deal found 4/16

$284

Last-minute flights from Colorado to Seattle
Discover last-minute flight deals from Colorado to Seattle. Data last updated April 17, 2025 and is based on user searches.

Tue 4/222:35 pmDEN - SEA

1 stop5h 04mDelta

Thu 4/241:30 pmSEA - DEN

1 stop4h 44mDelta

Deal found 4/17

$382

Wed 4/2310:37 pmDEN - SEA

Nonstop3h 07mFrontier

Wed 4/306:00 amSEA - DEN

Nonstop2h 46mFrontier

Deal found 4/17

$166

Wed 4/239:35 pmDEN - SEA

Nonstop2h 55mSouthwest

Wed 4/309:00 amSEA - DEN

2 stops8h 30mSouthwest

Deal found 4/17

$282

Wed 4/237:00 amDEN - SEA

Nonstop3h 00mAlaska Airlines

Wed 4/2311:55 amSEA - DEN

2 stops8h 20mAlaska Airlines

Deal found 4/17

$289

Wed 4/235:24 pmCOS - SEA

1 stop4h 38mUnited Airlines

Sat 4/265:14 amSEA - COS

1 stop4h 35mUnited Airlines

Deal found 4/16

$317

Wed 4/2312:21 pmDEN - SEA

Nonstop2h 56mHawaiian Airlines

Wed 4/233:17 pmSEA - DEN

Nonstop2h 40mHawaiian Airlines

Deal found 4/17

$401

Thu 4/246:05 amGJT - SEA

1 stop7h 56mAmerican Airlines

Mon 4/282:58 pmSEA - GJT

1 stop5h 56mAmerican Airlines

Deal found 4/16

$389

Thu 4/245:30 amGJT - SEA

2 stops9h 48mUnited Airlines

Mon 4/285:14 amSEA - GJT

1 stop6h 21mUnited Airlines

Deal found 4/16

$444

Thu 4/248:09 amDEN - SEA

1 stop6h 54mAmerican Airlines

Fri 4/2512:59 amSEA - DEN

1 stop10h 03mAmerican Airlines

Deal found 4/17

$520

Fri 4/255:21 amDRO - SEA

1 stop8h 40mAmerican Airlines

Mon 4/282:58 pmSEA - DRO

1 stop6h 20mAmerican Airlines

Deal found 4/17

$408

Fri 4/256:00 amDRO - SEA

2 stops11h 40mAlaska Airlines

Mon 4/281:36 pmSEA - DRO

1 stop7h 42mAlaska Airlines

Deal found 4/17

$494

Sun 4/277:45 amDEN - SEA

1 stop7h 33mUnited Airlines

Wed 4/305:14 amSEA - DEN

Nonstop2h 43mUnited Airlines

Deal found 4/17

$310

One-way flights from Colorado to Seattle
Search for one-way flight options from Colorado to Seattle. Find affordable one-way fares based on user searches. Data last updated April 17, 2025.

Wed 5/216:00 amDEN - SEA

Nonstop2h 59mHawaiian Airlines

Deal found 4/17

$83

Tue 6/179:36 pmDEN - SEA

Nonstop3h 08mFrontier

Deal found 4/17

$86

Thu 5/297:00 amDEN - SEA

1 stop18h 10mMultiple Airlines

Deal found 4/17

$101

Tue 5/206:00 amDEN - SEA

Nonstop2h 59mAlaska Airlines

Deal found 4/17

$105

Wed 9/246:15 amDEN - SEA

Nonstop3h 11mDelta

Deal found 4/17

$109

Tue 5/278:00 amCOS - SEA

2 stops9h 45mDelta

Deal found 4/16

$114

Sun 9/218:02 amDEN - SEA

1 stop6h 26mUnited Airlines

Deal found 4/17

$119

Sat 6/75:45 pmDEN - SEA

2 stops7h 45mSouthwest

Deal found 4/17

$124

Fri 7/410:15 amDEN - SEA

1 stop13h 35mSun Country Air

Deal found 4/16

$143

Thu 5/156:39 pmCOS - SEA

1 stop5h 24mUnited Airlines

Deal found 4/17

$146

Sun 5/44:35 pmCOS - SEA

2 stops28h 16mMultiple Airlines

Deal found 4/16

$147

Sat 6/1412:14 pmDEN - SEA

1 stop9h 02mAmerican Airlines

Deal found 4/17

$149

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 5/14

9:43 pm-11:49 pm

Nonstop3h 06m

Seattle/Tacoma Intl

Wed 5/21

6:24 am-10:15 am

Nonstop2h 51m

$135

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 5/14

9:43 pm-11:49 pm

Nonstop3h 06m

Seattle/Tacoma Intl

Wed 5/21

8:23 pm-12:05 am

Nonstop2h 42m

$149

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 5/20

5:15 pm-11:50 pm

1 stop7h 35m

Seattle/Tacoma Intl

Wed 5/21

5:00 am-8:40 am

Nonstop2h 40m

$167

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Sat 5/17

6:53 pm-8:50 pm

Nonstop2h 57m

Seattle/Tacoma Intl

Mon 5/19

7:10 am-11:00 am

Nonstop2h 50m

$177

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 5/21

6:00 am-7:59 am

Nonstop2h 59m

Seattle/Tacoma Intl

Mon 5/26

8:23 pm-12:05 am

Nonstop2h 42m

$187

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 6/24

7:06 pm-10:59 pm

1 stop4h 53m

Seattle/Tacoma Intl

Tue 7/1

8:17 pm-11:59 pm

Nonstop2h 42m

$207

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Tue 5/13

8:00 am-2:45 pm

1 stop7h 45m

Seattle/Tacoma Intl

Wed 5/14

1:30 pm-6:53 pm

1 stop4h 23m

$217

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 4/30

5:15 am-11:39 am

1 stop7h 24m

Seattle/Tacoma Intl

Wed 5/7

7:00 am-2:59 pm

1 stop6h 59m

$228

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 5/3

11:46 am-6:06 pm

1 stop7h 20m

Seattle/Tacoma Intl

Wed 5/7

8:50 am-2:43 pm

1 stop4h 53m

$237

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Mon 5/5

4:43 pm-12:45 am

1 stop9h 02m

Seattle/Tacoma Intl

Mon 5/12

11:58 pm-9:42 am

1 stop8h 44m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 51 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Seattle

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?

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

The most flights from USCO to SEA are scheduled on a Thursday (44 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Seattle 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

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

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta 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.

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,882 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,280 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,917 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,382 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,667 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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 227 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $83. Frontier flights start at $86 while deals on Alaska Airlines start at $105 one-way.
What are the most popular routes from Colorado to Seattle?
Most travelers choose Denver Intl - Seattle/Tacoma Intl, Grand Junction Regnl - Seattle/Tacoma Intl or Durango La Plata 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: Condor (96%), Japan Airlines (95%), KLM (94%).
What are the cheapest flights from Colorado to Seattle?
While on average a flight from Colorado to Seattle is generally $758, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Denver Intl - Seattle/Tacoma Intl), you can expect to pay $145 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.

See more FAQs

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Ocean Shores

Lacey

Leavenworth

Federal Way

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Shoreline

Cle Elum

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Kent

Lynnwood

Shelton

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Redmond

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Top 7 airlines flying from Colorado to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$58	Average$142	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$107	Average$373	FlexibilityNo cancel fee	On-timeN/A
Hawaiian Airlines	Cheapest$108	Average$249	FlexibilityNo cancel fee	On-time85%
Southwest	Cheapest$121	Average$356	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$146	Average$381	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$148	Average$509	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$199	Average$405	FlexibilityNo cancel fee	On-time71%

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$79+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Colorado to Seattle

Keep the following information in mind while searching for Colorado to Seattle flight deals. Data was last updated April 17, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Colorado to Seattle

Cheapest flights from Colorado to SeattleExplore 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 April 17, 2025.

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 April 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado to Seattle that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Seattle

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

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 April 17, 2025.

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 April 17, 2025.

Rainfall in Seattle by month

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

Temperature in Seattle by month

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

Reviews of airlines servicing Seattle

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?

How popular is this Colorado to Seattle flight route?

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

What are the most popular routes from Colorado to Seattle?

What are the most reliable airlines from Colorado to Seattle?

What are the cheapest flights from Colorado to Seattle?

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

How can I find direct flights from Colorado to Seattle?

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

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

Traveling to a place near Colorado?

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 7 airlines flying from Colorado to Seattle

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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 April 17, 2025.