What are the cheapest airlines flying from Colorado Springs to Seattle round-trip?

According to our current data, Delta ($177), Southwest ($187), and American Airlines ($257) offers the cheapest pricing from Colorado Springs to Seattle. Delta is currently priced 53% below the average price you’ll pay for this route.

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

$89 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $124 and $125, respectively.

What is the cheapest day to fly from Colorado Springs to Seattle?

Travelers seeking maximum savings on their Colorado Springs to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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

American Airlines, Delta and United Airlines are the most popular airlines when flying from Colorado Springs to Seattle.

What is the cheapest day to fly round-trip from Colorado Springs to Seattle?

Leaving on a Wednesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 58% on the overall cost on flights from Colorado Springs to Seattle.

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

To save up to 84% on this flight, we recommend booking at least 24 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Colorado Springs to Seattle from $366 1-2 weeks out and tickets from $386 for flights departing within the next 72 hours.

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

Flights from Colorado Springs to Seattle lean towards being more expensive in November. Prices are generally better when you fly from Colorado Springs to Seattle in January, with the cheapest ticket starting at $206.

What is the cheapest time of day to fly from COS to SEA?

It’s typically best to fly out from Colorado Springs to Seattle in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Colorado Springs 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.

$89+ Flights from Colorado Springs to Seattle

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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.

Cheapflights Tip: The best prices from Colorado Springs to Seattle/Tacoma Intl are usually found in January or February, booked 23 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Colorado Springs to Seattle

Round-trip from	$177 (Delta)
One-way from	$89 (Delta)
Popular in	November
Cheapest in	January
Average price	$388

From Colorado Springs to Seattle/Tacoma Intl

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One-way flight from Colorado Springs to Seattle/Tacoma Intl

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Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Colorado Springs to Seattle

Cheapest flights from Colorado Springs to Seattle
Explore the most affordable flight options available from Colorado Springs to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2025.

Thu 8/215:55 pmCOS - SEA

1 stop5h 25mDelta

Mon 8/2511:55 pmSEA - COS

1 stop9h 21mDelta

Deal found 7/13

$177

Tue 8/196:00 amCOS - SEA

2 stops8h 20mSouthwest

Sat 8/235:00 amSEA - COS

1 stop4h 20mSouthwest

Deal found 7/13

$182

Thu 10/164:54 pmCOS - SEA

1 stop7h 10mAmerican Airlines

Thu 10/231:35 pmSEA - COS

1 stop9h 09mAmerican Airlines

Deal found 7/13

$257

Thu 9/41:55 pmCOS - SEA

1 stop4h 56mUnited Airlines

Fri 9/123:19 pmSEA - COS

2 stops7h 31mUnited Airlines

Deal found 7/12

$267

Best flights from Colorado Springs to Seattle
Discover carefully curated flight deals from Colorado Springs to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 14, 2025.

Thu 8/215:55 pmCOS - SEA

1 stop5h 25mDelta

Mon 8/2511:55 pmSEA - COS

1 stop9h 21mDelta

Deal found 7/13

$177

Mon 10/206:15 pmCOS - SEA

2 stops7h 35mSouthwest

Mon 10/279:55 amSEA - COS

2 stops8h 30mSouthwest

Deal found 7/14

$187

Thu 10/164:54 pmCOS - SEA

1 stop7h 10mAmerican Airlines

Thu 10/231:35 pmSEA - COS

1 stop9h 09mAmerican Airlines

Deal found 7/13

$257

Thu 9/41:55 pmCOS - SEA

1 stop4h 56mUnited Airlines

Fri 9/123:19 pmSEA - COS

2 stops7h 31mUnited Airlines

Deal found 7/12

$267

Last-minute flights from Colorado Springs to Seattle
Discover last-minute flight deals from Colorado Springs to Seattle. Data last updated July 14, 2025 and is based on user searches.

Sat 7/196:35 pmCOS - SEA

1 stop5h 24mUnited Airlines

Sat 7/266:45 amSEA - COS

2 stops9h 35mUnited Airlines

Deal found 7/13

$487

Sat 7/194:55 pmCOS - SEA

1 stop8h 48mAmerican Airlines

Fri 7/2512:59 amSEA - COS

1 stop7h 54mAmerican Airlines

Deal found 7/13

$938

Mon 8/1110:54 amCOS - SEA

1 stop9h 22mAmerican Airlines

Thu 8/2112:58 amSEA - COS

1 stop8h 04mAmerican Airlines

Deal found 7/13

$287

Sun 8/176:35 pmCOS - SEA

1 stop5h 24mUnited Airlines

Fri 8/222:29 pmSEA - COS

2 stops8h 21mUnited Airlines

Deal found 7/13

$322

Tue 8/196:00 amCOS - SEA

2 stops8h 20mSouthwest

Sat 8/235:00 amSEA - COS

1 stop4h 20mSouthwest

Deal found 7/13

$182

Thu 8/215:55 pmCOS - SEA

1 stop5h 25mDelta

Mon 8/2511:55 pmSEA - COS

1 stop9h 21mDelta

Deal found 7/13

$177

One-way flights from Colorado Springs to Seattle
Search for one-way flight options from Colorado Springs to Seattle. Find affordable one-way fares based on user searches. Data last updated July 14, 2025.

Wed 9/245:55 pmCOS - SEA

1 stop5h 29mDelta

Deal found 7/14

$89

Fri 8/291:10 pmCOS - SEA

1 stop12h 05mSouthwest

Deal found 7/12

$124

Mon 8/46:35 pmCOS - SEA

1 stop5h 24mUnited Airlines

Deal found 7/14

$125

Fri 8/295:40 pmCOS - SEA

3 stops27h 58mMultiple Airlines

Deal found 7/12

$267

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 8/21

5:55 pm-10:20 pm

1 stop5h 25m

Seattle/Tacoma Intl

Mon 8/25

11:55 pm-10:16 am

1 stop9h 21m

$177

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Tue 8/19

6:00 am-1:20 pm

2 stops8h 20m

Seattle/Tacoma Intl

Sat 8/23

5:00 am-10:20 am

1 stop4h 20m

$182

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 10/16

4:54 pm-11:04 pm

1 stop7h 10m

Seattle/Tacoma Intl

Thu 10/23

1:35 pm-11:44 pm

1 stop9h 09m

$257

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 9/4

1:55 pm-5:51 pm

1 stop4h 56m

Seattle/Tacoma Intl

Fri 9/12

3:19 pm-11:50 pm

2 stops7h 31m

$267

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 9/13

5:55 pm-9:58 pm

1 stop5h 03m

$89

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Fri 8/29

1:10 pm-12:15 am

1 stop12h 05m

$124

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Mon 8/4

6:35 pm-10:59 pm

1 stop5h 24m

$125

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Fri 8/29

5:40 pm-8:38 pm

3 stops27h 58m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/12

Best time to book a flight from Colorado Springs to Seattle

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

How far ahead should I book a flight from Colorado Springs to Seattle?

The price you pay for your flight from Colorado Springs to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 23 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Colorado Springs to Seattle (average of $238). Flying from Colorado Springs to Seattle in June is currently the most expensive (average of $388). 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.

Reviews of airlines servicing Seattle

Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Colorado Springs to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,243 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,243 reviews

Southwest

8.0

Very good

4,243 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,953 reviews

Southwest

8.0

Very good

4,243 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,856 reviews

Southwest

8.0

Very good

4,243 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,243 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What are the cheapest airlines flying from Colorado Springs to Seattle round-trip?
According to our current data, Delta ($177), Southwest ($187), and American Airlines ($257) offers the cheapest pricing from Colorado Springs to Seattle. Delta is currently priced 53% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Colorado Springs to Seattle one-way?
$89 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $124 and $125, respectively.
Can I find deals for flights from Colorado Springs to Seattle that include hotel bookings?
Yes. In addition to deals on Colorado Springs to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado Springs to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado Springs to Seattle.
Can I find deals for business class flights from Colorado Springs to Seattle?
Yes. Cheapflights offers flight deals from Colorado Springs 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 Springs to Seattle?
Currently, January is the cheapest month in which you can book a flight from Colorado Springs to Seattle (average of $238). Flying from Colorado Springs to Seattle in June is currently the most expensive (average of $388). 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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Shelton

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Other flights to Seattle

Top 4 airlines flying from Colorado Springs to Seattle

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$206	Average$278	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$216	Average$378	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$232	Average$411	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$243	Average$385	FlexibilityNo cancel fee	On-time69%

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$89+ Cheap flights from Colorado Springs to Seattle (COS - 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado Springs to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Colorado Springs to Seattle/Tacoma Intl are usually found in January or February, booked 23 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Colorado Springs to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Colorado Springs to Seattle

Cheapest flights from Colorado Springs to SeattleExplore the most affordable flight options available from Colorado Springs to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2025.

Explore the most affordable flight options available from Colorado Springs to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Colorado Springs to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Colorado Springs with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from Colorado Springs to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Colorado Springs to Seattle. Price data was last updated on July 11, 2025.

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

Reviews of airlines servicing Seattle

Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Colorado Springs to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Colorado Springs to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Colorado Springs to Seattle round-trip?

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

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

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

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

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

Traveling to a place near Seattle?

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Alternative routes for Colorado Springs to Seattle

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Top 4 airlines flying from Colorado Springs to Seattle

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Cheapest flights from Colorado Springs to Seattle
Explore the most affordable flight options available from Colorado Springs to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2025.