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

According to our current data, Southwest ($161), Delta ($198), and American Airlines ($208) offers the cheapest pricing from Colorado Springs to Seattle. Southwest is currently priced 57% below the average price you’ll pay for this route.

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

$80 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $119 and $159, 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.

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 33% on this flight, we recommend booking at least 29 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 $208 1-2 weeks out and tickets from $248 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 May. Prices are generally better when you fly from Colorado Springs to Seattle in October, with the cheapest ticket starting at $58.

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.

$80+ Flights from Colorado Springs to Seattle

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Colorado Springs to Seattle 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.

Cheapflights Tip: The best prices from Colorado Springs to Seattle/Tacoma Intl are usually found in January or February, booked 38 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	$161 (Southwest)
One-way from	$80 (Southwest)
Popular in	July
Cheapest in	January
Average price	$421

From Colorado Springs to Seattle/Tacoma Intl

Search Deals

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

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($50 potential increase over avg. RT price).

Search Deals

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

Search Deals

Average for round-trip flights in June 2025

Search Deals

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 junio 12, 2025.

vie. 8/156:55 pmCOS - SEA

1 stop6h 20mSouthwest

lun. 8/186:30 amSEA - COS

1 stop7h 25mSouthwest

Deal found 6/10

$161

jue. 8/285:07 pmCOS - SEA

1 stop7h 09mAmerican Airlines

mar. 9/211:30 pmSEA - COS

1 stop9h 41mAmerican Airlines

Deal found 6/12

$198

vie. 8/295:55 pmCOS - SEA

1 stop5h 20mDelta

sáb. 9/69:40 amSEA - COS

1 stop6h 35mDelta

Deal found 6/10

$227

mar. 7/155:20 pmCOS - SEA

1 stop6h 39mUnited Airlines

sáb. 7/196:45 amSEA - COS

2 stops9h 35mUnited Airlines

Deal found 6/12

$302

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 junio 12, 2025.

vie. 8/156:55 pmCOS - SEA

1 stop6h 20mSouthwest

lun. 8/186:30 amSEA - COS

1 stop7h 25mSouthwest

Deal found 6/10

$161

jue. 7/315:55 pmCOS - SEA

1 stop5h 27mDelta

mié. 8/61:30 pmSEA - COS

1 stop7h 43mDelta

Deal found 6/11

$198

jue. 8/285:07 pmCOS - SEA

1 stop8h 47mAmerican Airlines

mar. 9/211:30 pmSEA - COS

1 stop9h 41mAmerican Airlines

Deal found 6/10

$208

mar. 7/155:20 pmCOS - SEA

1 stop6h 39mUnited Airlines

sáb. 7/196:45 amSEA - COS

2 stops9h 35mUnited Airlines

Deal found 6/12

$302

Last-minute flights from Colorado Springs to Seattle
Discover last-minute flight deals from Colorado Springs to Seattle. Data last updated junio 12, 2025 and is based on user searches.

jue. 6/193:50 pmCOS - SEA

1 stop10h 00mSouthwest

mar. 6/244:55 pmSEA - COS

1 stop4h 45mSouthwest

Deal found 6/10

$307

jue. 6/195:01 pmCOS - SEA

1 stop6h 58mAmerican Airlines

sáb. 6/2811:32 pmSEA - COS

1 stop9h 28mAmerican Airlines

Deal found 6/9

$474

jue. 6/196:30 pmCOS - SEA

1 stop4h 45mUnited Airlines

sáb. 6/283:45 pmSEA - COS

1 stop5h 10mUnited Airlines

Deal found 6/11

$477

mar. 7/155:20 pmCOS - SEA

1 stop6h 39mUnited Airlines

sáb. 7/196:45 amSEA - COS

2 stops9h 35mUnited Airlines

Deal found 6/12

$302

vie. 7/188:45 pmCOS - SEA

1 stop5h 40mSouthwest

mar. 7/2210:55 pmSEA - COS

1 stop9h 35mSouthwest

Deal found 6/11

$227

vie. 7/184:55 pmCOS - SEA

1 stop8h 48mAmerican Airlines

lun. 7/2112:59 amSEA - COS

1 stop7h 52mAmerican Airlines

Deal found 6/11

$392

jue. 7/315:55 pmCOS - SEA

1 stop5h 27mDelta

mié. 8/61:30 pmSEA - COS

1 stop7h 43mDelta

Deal found 6/11

$198

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 junio 12, 2025.

mar. 8/265:05 pmCOS - SEA

1 stop7h 05mSouthwest

Deal found 6/11

$80

jue. 7/105:55 pmCOS - SEA

1 stop7h 04mDelta

Deal found 6/10

$119

vie. 7/45:09 pmCOS - SEA

2 stops22h 54mMultiple Airlines

Deal found 6/10

$130

jue. 6/193:47 pmCOS - SEA

1 stop6h 21mUnited Airlines

Deal found 6/11

$159

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

vie. 8/15

6:55 pm-12:15 am

1 stop6h 20m

Seattle/Tacoma Intl

lun. 8/18

6:30 am-2:55 pm

1 stop7h 25m

$161

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

jue. 7/31

5:55 pm-10:22 pm

1 stop5h 27m

Seattle/Tacoma Intl

mié. 8/6

1:30 pm-10:13 pm

1 stop7h 43m

$198

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

jue. 8/28

5:07 pm-12:54 am

1 stop8h 47m

Seattle/Tacoma Intl

mar. 9/2

11:30 pm-10:11 am

1 stop9h 41m

$208

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mar. 7/15

5:20 pm-10:59 pm

1 stop6h 39m

Seattle/Tacoma Intl

sáb. 7/19

6:45 am-5:20 pm

2 stops9h 35m

$302

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mar. 8/26

5:05 pm-11:10 pm

1 stop7h 05m

$80

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

jue. 7/10

5:55 pm-11:59 pm

1 stop7h 04m

$119

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

vie. 7/4

5:09 pm-3:03 pm

2 stops22h 54m

$130

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

jue. 6/19

3:47 pm-9:08 pm

1 stop6h 21m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 July is currently the most expensive (average of $391). 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.

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

Read through reviews of airlines operating flights from Colorado Springs to Seattle, such as Southwest, Delta and United Airlines. 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

4,287 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

4,287 reviews

Southwest

8.0

Very good

4,287 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

7,946 reviews

Southwest

8.0

Very good

4,287 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

8,790 reviews

Southwest

8.0

Very good

4,287 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

4,287 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, Southwest ($161), Delta ($198), and American Airlines ($208) offers the cheapest pricing from Colorado Springs to Seattle. Southwest is currently priced 57% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Colorado Springs to Seattle one-way?
$80 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $119 and $159, 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 July is currently the most expensive (average of $391). 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

SeaTac

Tukwila

Tacoma

Lakewood

Ocean Shores

Lacey

Leavenworth

Federal Way

Lynnwood

Olympia

Shoreline

Kent

Cle Elum

Centralia

Kirkland

Aberdeen

Renton

Shelton

Silverdale

Issaquah

Browse thousands of different options on Cheapflights for your next trip

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$226	Average$462	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$245	Average$395	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$246	Average$445	FlexibilityNo cancel fee	On-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$80+ 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 8/26. 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 38 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 junio 12, 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 junio 12, 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 June 9, 2025.

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

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

Read through reviews of airlines operating flights from Colorado Springs to Seattle, such as Southwest, Delta and United Airlines. 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 Colorado Springs?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado Springs to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Colorado Springs to Seattle

100% Free

Book with Flexibility

Travel Smart

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 junio 12, 2025.