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$37 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 6/5. 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
Mon 6/17
Mon 6/24

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In the last 7 days travelers have searched 42,332,103 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$37
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 20% 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

Prefer to fly non-stop from Colorado to Seattle?

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

Nonstop departures

Colorado to Seattle/Tacoma Intl

Monday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Tuesday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Wednesday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Thursday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Friday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Saturday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Sunday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Colorado

Monday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Tuesday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Wednesday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Thursday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Friday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Saturday

ANA, Aer Lingus, Aeromexico, +62 more

ANA, Aer Lingus, +63 more

Sunday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

See more direct flights
See more direct flights

Book cheap flights from Colorado to Seattle

Recent round-trip flight deals

8/28Wed
nonstopFrontier
3h 02mDEN-SEA
9/4Wed
nonstopFrontier
2h 43mSEA-DEN
$75
6/5Wed
nonstopFrontier
3h 00mDEN-SEA
6/11Tue
nonstopFrontier
2h 58mSEA-DEN
$76
6/5Wed
1 stop
6h 42mDEN-SEA
6/11Tue
nonstop
2h 58mSEA-DEN
$123
6/11Tue
1 stop
7h 00mDEN-SEA
8/26Mon
nonstop
2h 43mSEA-DEN
$125
6/8Sat
nonstopDelta
3h 06mDEN-SEA
8/25Sun
nonstopDelta
2h 47mSEA-DEN
$182
10/26Sat
1 stopAmerican Airlines
6h 50mCOS-SEA
10/29Tue
1 stopAmerican Airlines
6h 39mSEA-COS
$188
10/26Sat
2 stopsAmerican Airlines
10h 02mCOS-SEA
10/28Mon
1 stopAmerican Airlines
6h 54mSEA-COS
$193
5/31Fri
1 stopSun Country Air
15h 35mDEN-SEA
6/3Mon
1 stopSun Country Air
7h 14mSEA-DEN
$194
7/25Thu
nonstopDelta
2h 56mDEN-SEA
7/28Sun
nonstopDelta
2h 44mSEA-DEN
$227
6/16Sun
1 stopSun Country Air
23h 20mCOS-SEA
6/22Sat
1 stopSun Country Air
23h 55mSEA-COS
$275

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/5Wed
nonstopFrontier
3h 00mDEN-SEA
$37
6/14Fri
nonstopFrontier
3h 00mDEN-SEA
$39
5/24Fri
1 stopSun Country Air
13h 10mDEN-SEA
$79
5/24Fri
1 stopSun Country Air
13h 10mDEN-SEA
$81
6/12Wed
nonstopDelta
3h 05mDEN-SEA
$87
7/17Wed
nonstopDelta
3h 01mDEN-SEA
$89
8/1Thu
nonstopAlaska Airlines
2h 59mDEN-SEA
$94
6/18Tue
1 stopUnited Airlines
5h 40mDEN-SEA
$98
7/3Wed
1 stopAlaska Airlines
6h 45mDEN-SEA
$103
5/26Sun
1 stopUnited Airlines
5h 32mCOS-SEA
$120

Search by stops

Search by airline

Search by price

Last minute flights from Colorado to Seattle

Last minute flight, train and bus deals

5/21Tue
nonstopFrontier
3h 02mDEN-SEA
5/26Sun
nonstopFrontier
2h 52mSEA-DEN
$153
5/21Tue
multi-stopFrontier
15h 20mDEN-SEA
5/26Sun
nonstopFrontier
2h 52mSEA-DEN
$154
5/22Wed
nonstopFrontier
3h 03mDEN-SEA
5/27Mon
nonstopFrontier
3h 01mSEA-DEN
$160
5/22Wed
multi-stop
11h 31mDEN-SEA
5/27Mon
multi-stop
14h 55mSEA-DEN
$225
5/23Thu
nonstop
3h 05mDEN-SEA
5/27Mon
multi-stop
14h 55mSEA-DEN
$232
5/22Wed
multi-stopSun Country Air
15h 25mDEN-SEA
5/25Sat
multi-stopSun Country Air
12h 25mSEA-DEN
$238
5/21Tue
multi-stopAmerican Airlines
8h 07mCOS-SEA
5/25Sat
multi-stopAmerican Airlines
7h 45mSEA-COS
$256
5/21Tue
multi-stopUnited Airlines
5h 23mCOS-SEA
5/31Fri
multi-stopUnited Airlines
5h 49mSEA-COS
$283
5/19Sun
multi-stopUnited Airlines
5h 39mCOS-SEA
5/22Wed
multi-stopUnited Airlines
6h 44mSEA-COS
$321
5/21Tue
multi-stopAmerican Airlines
8h 07mCOS-SEA
5/26Sun
multi-stopAmerican Airlines
9h 50mSEA-COS
$324

Search by stops

Search by airline

Search by price

Flights to Seattle

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Colorado

Cabin classes:

$228
$289
$322
$78