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

According to our current data, Delta ($222), American Airlines ($237), and United Airlines ($242) offers the cheapest pricing from Colorado Springs to Seattle. Delta is currently priced 42% below the average price you’ll pay for this route.

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

$109 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from $114 and $148, 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 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 $250 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 July. 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.

Most accurate provider : When it comes to deals on Colorado Springs-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Colorado Springs-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Colorado Springs-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Colorado Springs-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colorado Springs-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$109+ Flights from Colorado Springs to Seattle

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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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$222 (Delta)
One-way from	$109 (Southwest)
Popular in	July
Cheapest in	January
Average price	$356

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

Search Deals

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

Search Deals

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. 14% potential increase in price ($68 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 April 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 April 11, 2025.

Wed 7/165:55 pmCOS - SEA

1 stop7h 20mSouthwest

Tue 7/224:55 pmSEA - COS

1 stop4h 45mSouthwest

Deal found 4/10

$247

Thu 7/105:55 pmCOS - SEA

1 stop5h 28mDelta

Sun 7/135:00 pmSEA - COS

1 stop4h 28mDelta

Deal found 4/10

$257

Wed 8/65:09 pmCOS - SEA

1 stop8h 35mAmerican Airlines

Tue 8/121:29 amSEA - COS

1 stop6h 53mAmerican Airlines

Deal found 4/10

$287

Wed 8/66:35 pmCOS - SEA

1 stop5h 24mUnited Airlines

Wed 8/132:57 pmSEA - COS

1 stop4h 58mUnited Airlines

Deal found 4/10

$297

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 April 11, 2025.

Sat 6/78:00 amCOS - SEA

2 stops9h 45mDelta

Mon 6/911:59 pmSEA - COS

1 stop9h 03mDelta

Deal found 4/8

$222

Wed 4/237:15 amCOS - SEA

1 stop9h 22mAmerican Airlines

Wed 4/301:51 pmSEA - COS

1 stop8h 55mAmerican Airlines

Deal found 4/9

$237

Wed 5/76:00 amCOS - SEA

1 stop4h 47mUnited Airlines

Wed 5/142:40 pmSEA - COS

2 stops8h 11mUnited Airlines

Deal found 4/9

$242

Fri 5/96:50 pmCOS - SEA

1 stop6h 35mSouthwest

Tue 5/135:00 amSEA - COS

1 stop4h 10mSouthwest

Deal found 4/9

$247

Last-minute flights from Colorado Springs to Seattle
Discover last-minute flight deals from Colorado Springs to Seattle. Data last updated April 11, 2025 and is based on user searches.

Wed 4/1612:41 pmCOS - SEA

1 stop9h 33mAmerican Airlines

Sun 4/205:22 amSEA - COS

1 stop9h 27mAmerican Airlines

Deal found 4/10

$343

Wed 4/165:24 pmCOS - SEA

2 stops8h 34mUnited Airlines

Sun 4/205:14 amSEA - COS

1 stop4h 35mUnited Airlines

Deal found 4/10

$428

Thu 4/243:45 pmCOS - SEA

2 stops8h 40mSouthwest

Mon 4/287:05 amSEA - COS

2 stops9h 10mSouthwest

Deal found 4/10

$417

Thu 5/14:39 pmCOS - SEA

1 stop9h 12mAmerican Airlines

Wed 5/1411:58 pmSEA - COS

1 stop8h 44mAmerican Airlines

Deal found 4/10

$307

Fri 5/99:35 amCOS - SEA

2 stops13h 22mUnited Airlines

Tue 5/135:15 amSEA - COS

1 stop4h 34mUnited Airlines

Deal found 4/10

$322

Fri 5/308:00 amCOS - SEA

2 stops9h 45mDelta

Fri 6/61:30 pmSEA - COS

1 stop4h 23mDelta

Deal found 4/10

$437

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 April 11, 2025.

Fri 5/96:50 pmCOS - SEA

1 stop6h 35mSouthwest

Deal found 4/8

$109

Wed 5/146:00 amCOS - SEA

2 stops8h 43mUnited Airlines

Deal found 4/9

$114

Sun 5/118:00 amCOS - SEA

2 stops9h 45mDelta

Deal found 4/9

$148

Mon 4/1410:42 amCOS - SEA

1 stop9h 18mAmerican Airlines

Deal found 4/9

$204

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

Wed 7/16

5:55 pm-12:15 am

1 stop7h 20m

Seattle/Tacoma Intl

Tue 7/22

4:55 pm-10:40 pm

1 stop4h 45m

$247

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 7/10

5:55 pm-10:23 pm

1 stop5h 28m

Seattle/Tacoma Intl

Sun 7/13

5:00 pm-10:28 pm

1 stop4h 28m

$257

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 8/6

5:09 pm-12:44 am

1 stop8h 35m

Seattle/Tacoma Intl

Tue 8/12

1:29 am-9:22 am

1 stop6h 53m

$287

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 8/6

6:35 pm-10:59 pm

1 stop5h 24m

Seattle/Tacoma Intl

Wed 8/13

2:57 pm-8:55 pm

1 stop4h 58m

$297

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 5/14

5:15 pm-11:03 pm

1 stop6h 48m

$109

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Tue 7/15

5:55 pm-12:15 am

1 stop7h 20m

$139

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Tue 7/15

8:00 am-4:54 pm

2 stops9h 54m

$154

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Mon 7/7

5:09 pm-3:03 pm

2 stops22h 54m

$187

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 4/17

6:00 am-1:01 pm

1 stop8h 01m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Compare providers for flights from Colorado Springs to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colorado Springs to Seattle in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Colorado Springs-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Colorado Springs-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Colorado Springs-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Colorado Springs-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colorado Springs-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $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.

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

4,279 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,279 reviews

Southwest

8.0

Very good

4,279 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,910 reviews

Southwest

8.0

Very good

4,279 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,636 reviews

Southwest

8.0

Very good

4,279 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,279 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What are the cheapest airlines flying from Colorado Springs to Seattle round-trip?
According to our current data, Delta ($222), American Airlines ($237), and United Airlines ($242) offers the cheapest pricing from Colorado Springs to Seattle. Delta is currently priced 42% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Colorado Springs to Seattle one-way?
$109 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from $114 and $148, 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 $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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Other flights to Seattle

Top 4 airlines flying from Colorado Springs to Seattle

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$206	Average$301	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$232	Average$447	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$245	Average$408	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$277	Average$466	FlexibilityNo cancel fee	On-timeN/A

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$109+ 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 5/9. 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

Most accurate provider

Most trusted provider

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 April 11, 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 April 11, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Colorado Springs to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colorado Springs to Seattle in April.

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 April 4, 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?

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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 April 11, 2025.