Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.
COSSEASat, 03 Oct
Fare checked before payment No hidden charges Transparent cancellation policy 24×7 booking support
Lowest fareUS$148United Airlines
Fastest4h 25mgate to gate
Options found80flights on this route
Find your flightCOS → SEA
Available Flights & Fares
Compare fares, timings and baggage. Pick the flight that suits your trip.
Prices in USD
80 flight options
Fares are checked again before payment.
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United Airlines
UA-4691
08:38
2026-10-03
Colorado Springs (COS)Colorado Springs
13H :37 M
1 Stop
DEN
· 9h 24m Denver (DEN), United States
21:15
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$443
Flight DetailsCOS to SEA - 13H :37 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-5634
09:23
2026-10-03
Colorado Springs (COS)Colorado Springs
9H :14 M
1 Stop
DEN
· 5h 05m Denver (DEN), United States
17:37
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$443
Flight DetailsCOS to SEA - 9H :14 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-5634
09:23
2026-10-03
Colorado Springs (COS)Colorado Springs
12H :52 M
1 Stop
DEN
· 8h 39m Denver (DEN), United States
21:15
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$443
Flight DetailsCOS to SEA - 12H :52 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-5400
10:27
2026-10-03
Colorado Springs (COS)Colorado Springs
11H :48 M
1 Stop
DEN
· 7h 33m Denver (DEN), United States
21:15
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 8 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$443
Flight DetailsCOS to SEA - 11H :48 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
No flights match the selected filters. Clear filters or open full search.
Today's Airfare Highlights
Selected flight highlights for 03 Oct 2026.
Lowest fare$148United Airlines05:30
Earliest departure$148United Airlines05:30
Shortest duration$448United Airlines12:15
Night
00:00-05:59
$148United Airlines at 05:30Morning
06:00-11:59
$148United Airlines at 10:27Afternoon
12:00-17:59
$148United Airlines at 12:15Evening
18:00-23:59
$153Delta Air Lines at 18:11
Departure & Arrival Airport Details
Colorado Springs (COS)
Colorado Springs
United States
GMT -7
Latitude: 38.805801
Longitude: -104.700996
Seattle (SEA)
Seattle/tacoma International
United States
GMT -8
Latitude: 47.449001
Longitude: -122.308998
Distance: Colorado Springs (COS), United States to Seattle (SEA), United States - 1,715.80 km
Flights shown for 03 Oct 2026. View all flights opens the complete search result.
Fares and hotel rates usually run higher around these dates. Booking earlier — or shifting a day or two — often costs less.
Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).
12OctColumbus DayMonday · in 29 daysPeak
12OctColumbus DayMonday · in 29 daysPeak
12OctIndigenous Peoples' DayMonday · in 29 daysPeak
11NovVeterans DayWednesday · in 59 days
26NovThanksgiving DayThursday · in 74 days
25DecChristmas DayFriday · in 103 days
Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here — check the exact date for your travel year.
Compare your journey
How to travel Colorado Springs to Seattle
Every option we can actually book for you, compared on price and journey time.
OptionFromJourney timeAvailability
Connecting flight₹14,152Longer — includes a stop80 options
Air distance is about 1,716 km. 4 airlines operate this route.
Road distance and coach duration are approximate estimates from the air distance, not a timetable.
Airlines flying from Colorado Springs to Seattle
Compare fares, stops, baggage and refundability across the airlines flying this route.
UN
United Airlines Flights
from $14853 flights
Fares from
$148
Non-stop
None in these results
Departures
53 — compare timings in the list above
DE
Delta Air Lines Flights
from $15312 flights
Fares from
$153
Non-stop
None in these results
Departures
12 — compare timings in the list above
AM
American Airlines Flights
from $31311 flights
Fares from
$313
Non-stop
None in these results
Departures
11 — compare timings in the list above
QA
Qatar Airways Flights
from $1,5944 flights
Fares from
$1,594
Non-stop
None in these results
Departures
4 — compare timings in the list above
Route Overview & Flight Facts
Fastest flight duration
4h 25m · United Airlines
First departure of the day
05:30 · United Airlines
Last departure of the day
18:11 · Delta Air Lines
Options in this snapshot
80
Airport codes
Colorado Springs–COS, Seattle–SEA
Fares and timings are indicative — the exact price is confirmed with the airline when you search.
Flight Schedule, Timings & Airfare Insights
Daily Flight Schedule & Travel Duration
Around 80 flights appear in the dated route snapshot. Departures run through the day — the first flight leaves around 05:30 and the last around 18:11. The fastest flight takes about 4h 25m.
Morning vs Evening Departure Fares
Lowest fare by departure window: Night from $148, Morning from $148, Afternoon from $148, Evening from $153. These observations do not predict the cheapest departure window on other dates.
Cheapest Airfare & Best Time to Book
Search your travel dates to compare current fares — prices update continuously with airline inventory.
One-Way vs Round-Trip Fare Comparison
Compare the complete cost and conditions of both options for your dates. A round-trip can have different fare and change rules from two one-way tickets. One booking may contain multiple airline PNRs; confirm baggage transfer and connection protection for separate tickets.
Online Web Check-In & Boarding Pass
Check the operating airline’s opening time and check-in deadline for each sector. Seat charges and availability depend on your fare. Use the airline reference and the links on Web Check-in.
How to Book Cheap Flights on FlyX
1
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2
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Sort or filter the Colorado Springs–Seattle results by price, departure time, stops and airline.
3
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4
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5
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Why Book Your Flight with FlyX?
Compare the available Colorado Springs to Seattle options by total price, stops, baggage and fare conditions. Search your dates for current availability, then review traveller details and the final price before paying.
Payment confirmation and ticket issuance are separate steps. If your booking is awaiting a PNR or ticket, follow its status and contact FlyX support when you need help. Your issued ticket contains the airline reference and itinerary. Change and cancellation charges depend on the purchased fare and any separately disclosed service fee.
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Frequently Asked Questions
Is it worth booking Colorado Springs to Seattle flights in advance?
There is no guaranteed cheapest booking window. Compare your planned dates early, check nearby dates and consider baggage, connection time and change conditions as well as price. Across the dates currently loaded for Colorado Springs to Seattle, Saturday shows the lowest fare at $148. That is an observed snapshot for these dates, not a rule that holds every week.
How far is Colorado Springs from Seattle by air?
The direct air distance between Colorado Springs (COS) and Seattle (SEA) is about 1,716 km. Actual flight time varies with the routing the airline files and with winds on the day.
Are there non-stop flights from COS to SEA?
Not for the dates currently loaded - every Colorado Springs to Seattle option showing right now has at least one stop. Non-stop service can differ by season and by day, so it is worth checking nearby dates before you decide.
Which airlines fly Colorado Springs to Seattle?
United Airlines, Delta Air Lines, American Airlines and Qatar Airways are showing on this route for the dates currently loaded. Fares, baggage allowance and refund rules differ by airline and by fare type, so compare the fare conditions and not only the headline price.
How long is the flight from Colorado Springs to Seattle?
Every option currently loaded has at least one stop, and the shortest total journey time is about 4h 25m including the layover. Non-stop service on this route can vary by season and by day.
What is the baggage allowance on Colorado Springs to Seattle flights?
Allowance is set by the airline and the fare you pick, not by the route. Fares showing right now include 2 Pieces. Cabin baggage is counted separately, and the exact allowance for the fare you choose is shown in the fare conditions before payment.
What is the cheapest Colorado Springs to Seattle flight fare?
The lowest fare showing on Colorado Springs to Seattle for the dates currently loaded is $148. Fares on the same dates run up to $1,594, depending on airline, timing and fare type. Airline pricing moves continuously, so treat this as a dated observation rather than a fixed price.
What time do Colorado Springs to Seattle flights depart?
For the dates currently loaded the first departure is around 05:30 and the last is around 18:11, local time at Colorado Springs. Use the departure-time filter on the results above to narrow to a morning, afternoon or evening slot.
Why does the price change after clicking Book Now?
Airline seat inventory and fares change continuously. Selecting Book Now runs a live fare verification with the airline so the price you approve is the price you pay - if it has moved, you see the new figure before any payment.
Before you book this route
Check the airport codes COS–SEA, local departure and arrival dates, and every connecting airport. Connections can have different document and baggage requirements from your final destination.
Where these fares come from
The fares, durations, stops and baggage shown here come from real airline search results for this route. They are examples for the dates on this page, not a full timetable and not a locked price — run a search to see what is available for your own dates.
Last checked .
Check official travel requirements
Confirm passport, visa and transit rules for your nationality and full itinerary with the relevant government and operating airline. IATA travel-document information explains why requirements vary.
Planning more than the flight? Our United States guide covers the visa process for Indian passport holders, best time to go, how long to plan for, and which places are worth the days you have. Long-haul city breaks and national parks.
The COS to SEA cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.
Approx route distance: 1,715.80 km.
Before you book
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Lowest Colorado Springs to Seattle airfare today, in 30 days and in 90 days
Cheapest Fare
Fare
Date
Airline
Departure
Lowest Airfare Today
$148
03/10/2026
United Airlines
05:30
Cheapest Airfare Within 30 Days
$145
13/10/2026
United Airlines
05:30
Cheapest Airfare Within 90 Days
$141
12/12/2026
United Airlines
05:30
Book Colorado Springs to Seattle Flight Tickets on FlyX
Planning to fly from Colorado Springs to Seattle? FlyX lets you compare flight rates, airline timings, layovers, and baggage allowances all in one simple list. From quick non-stop routes to flexible connecting options, finding and booking cheap air tickets has never been easier.
Colorado Springs to Seattle Flight Distance, Duration and Time
The aerial distance between Colorado Springs and Seattle is approximately 1,716 KM. The flight duration ranges from 4H :25 M up to 51H :08 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
Colorado Springs to Seattle Flight Schedule and Timing
Around 80 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from Colorado Springs at 05:30, while the last night flight leaves at 18:11. Flights depart from Colorado Springs and land at Seattle/tacoma International.
Flight Route Details & Analysis
Flight Details
Information
Route
Colorado Springs to Seattle
Aerial Distance
1,716 KM
Flight Duration
4H :25 M - 51H :08 M
Airport Codes
Colorado Springs - COS, Seattle - SEA
Total Flights Available
80 flights (0 direct)
First Flight Departure
Departs at 05:30
Last Flight Departure
Departs at 18:11
Early Morning Flights (12 AM - 8 AM)
18 direct/indirect flights
Morning Flights (8 AM - 12 PM)
36 direct/indirect flights
Afternoon Flights (12 PM - 4 PM)
21 direct/indirect flights
Evening Flights (4 PM - 8 PM)
5 direct/indirect flights
Night Flights (8 PM - 12 AM)
0 direct/indirect flights
Airport Information & Terminals
COS: Colorado Springs airport. Colorado Springs airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.
SEA: Seattle-Tacoma International Airport. Sea-Tac connects to downtown by light rail, while cabs are useful for Bellevue, Redmond or late-night arrivals. Rain and freeway traffic should be part of the plan.
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Colorado Springs