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$52 Find Cheap Flights from Colorado to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

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Good to know

Low season

January

High season

July

Cheapest flight

$52
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Denver to Seattle

FAQs for booking flights from Colorado to Seattle

  • How does KAYAK find such low prices on flights from Colorado to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Colorado to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Colorado with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Flights from Colorado to Seattle: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Colorado to Seattle 
Verified travelerFlew with Alaska AirlinesDEN-SEAOct 2024
Go early, it’s a big airport. There are two TSA screening areas, one might be more crowded than the other. From checking it to the gate give yourself at least 20-30 minutes to get there.
Verified travelerFlew with Alaska AirlinesDEN-SEAFeb 2024
Fly with Alaska and you’ll be pleased at their friendly competence.

Prefer to fly non-stop from Colorado to Seattle?

Find which airlines fly direct from Colorado to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Nonstop departures

Colorado to Seattle/Tacoma Intl

Monday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Tuesday

ANA, Aer Lingus, Aeromexico, +59 more

ANA, Aer Lingus, +60 more

Wednesday

ANA, Aer Lingus, Aeromexico, +63 more

ANA, Aer Lingus, +64 more

Thursday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Friday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Saturday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Sunday

ANA, Aer Lingus, Aeromexico, +64 more

ANA, Aer Lingus, +65 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Colorado

Monday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Tuesday

ANA, Aer Lingus, Aeromexico, +59 more

ANA, Aer Lingus, +60 more

Wednesday

ANA, Aer Lingus, Aeromexico, +63 more

ANA, Aer Lingus, +64 more

Thursday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Friday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Saturday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Sunday

ANA, Aer Lingus, Aeromexico, +64 more

ANA, Aer Lingus, +65 more

See more direct flights
See more direct flights

Book cheap flights from Colorado to Seattle

Recent round-trip flight deals

11/12Tue
nonstopFrontier
3h 15mDEN-SEA
11/13Wed
nonstopFrontier
2h 43mSEA-DEN
$74
11/14Thu
nonstopFrontier
3h 11mDEN-SEA
11/16Sat
nonstopFrontier
2h 46mSEA-DEN
$76
12/12Thu
nonstopAlaska Airlines
3h 10mDEN-SEA
12/15Sun
nonstopAlaska Airlines
2h 36mSEA-DEN
$111
11/21Thu
nonstopSouthwest
3h 00mDEN-SEA
11/24Sun
nonstopSouthwest
2h 35mSEA-DEN
$112
11/20Wed
nonstopDelta
3h 21mDEN-SEA
12/3Tue
nonstopDelta
2h 41mSEA-DEN
$139
12/5Thu
nonstop
3h 12mDEN-SEA
12/8Sun
nonstop
2h 36mSEA-DEN
$140
11/12Tue
1 stop
4h 41mDEN-SEA
11/19Tue
nonstop
2h 46mSEA-DEN
$142
2/5Wed
nonstopAlaska Airlines
3h 19mDEN-SEA
2/11Tue
nonstopAlaska Airlines
2h 37mSEA-DEN
$157
11/10Sun
nonstopDelta
3h 09mDEN-SEA
11/22Fri
nonstopDelta
2h 41mSEA-DEN
$171
2/6Thu
2 stopsSouthwest
7h 40mDEN-SEA
2/11Tue
nonstopSouthwest
2h 40mSEA-DEN
$202

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Recent one-way flight deals

2/9Sun
nonstopFrontier
3h 05mDEN-SEA
$52
1/30Thu
nonstopFrontier
3h 05mDEN-SEA
$53
12/4Wed
nonstopDelta
3h 15mDEN-SEA
$56
12/17Tue
1 stopUnited Airlines
8h 36mDEN-SEA
$61
1/28Tue
nonstopUnited Airlines
3h 06mDEN-SEA
$79
1/4Sat
nonstopDelta
3h 19mDEN-SEA
$89
1/28Tue
1 stopAmerican Airlines
6h 33mDEN-SEA
$98
1/18Sat
1 stopAmerican Airlines
7h 28mCOS-SEA
$103
11/6Wed
1 stopAlaska Airlines
4h 41mDEN-SEA
$108
3/15Sat
nonstopAlaska Airlines
3h 03mDEN-SEA
$124

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Last minute flights from Colorado to Seattle

Last minute flight, train and bus deals

11/5Tue
nonstopFrontier
3h 15mDEN-SEA
11/12Tue
nonstopFrontier
2h 46mSEA-DEN
$116
11/5Tue
nonstopFrontier
3h 10mDEN-SEA
11/23Sat
nonstopFrontier
2h 44mSEA-DEN
$128
11/5Tue
multi-stop
5h 42mDEN-SEA
11/6Wed
nonstop
2h 46mSEA-DEN
$237
11/4Mon
multi-stopAlaska Airlines
5h 41mDEN-SEA
11/21Thu
nonstopAlaska Airlines
2h 41mSEA-DEN
$248
11/4Mon
multi-stopSouthwest
8h 25mDEN-SEA
11/22Fri
nonstopSouthwest
2h 35mSEA-DEN
$254
11/1Fri
multi-stop
5h 41mDEN-SEA
11/5Tue
nonstop
2h 45mSEA-DEN
$282
11/2Sat
multi-stopSouthwest
8h 10mDEN-SEA
11/10Sun
nonstopSouthwest
2h 35mSEA-DEN
$297
11/5Tue
multi-stopAmerican Airlines
8h 06mDEN-SEA
11/12Tue
multi-stopAmerican Airlines
7h 57mSEA-DEN
$301
11/5Tue
multi-stopAmerican Airlines
8h 06mDEN-SEA
11/12Tue
multi-stopAmerican Airlines
6h 41mSEA-DEN
$333
11/2Sat
nonstopAlaska Airlines
3h 06mDEN-SEA
11/2Sat
nonstopAlaska Airlines
2h 41mSEA-DEN
$361

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Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle