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$34 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 9/16. 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
Sat 7/13
Sat 7/20

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In the last 7 days travelers have searched 44,216,777 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

July

Cheapest flight

$34
Best time to beat the crowds with an average 18% 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, +60 more

ANA, Aer Lingus, +61 more

Tuesday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Wednesday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Thursday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 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, +60 more

ANA, Aer Lingus, +61 more

Tuesday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 more

Wednesday

ANA, Aer Lingus, Aeromexico, +61 more

ANA, Aer Lingus, +62 more

Thursday

ANA, Aer Lingus, Aeromexico, +60 more

ANA, Aer Lingus, +61 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

6/26Wed
nonstopFrontier
3h 00mDEN-SEA
7/4Thu
nonstopFrontier
2h 55mSEA-DEN
$95
8/17Sat
nonstop
2h 58mDEN-SEA
8/24Sat
nonstop
2h 43mSEA-DEN
$96
8/10Sat
nonstopDelta
3h 01mDEN-SEA
8/14Wed
nonstopDelta
2h 44mSEA-DEN
$107
8/12Mon
nonstopDelta
2h 56mDEN-SEA
8/14Wed
nonstopDelta
2h 38mSEA-DEN
$108
8/16Fri
nonstopAlaska Airlines
2h 58mDEN-SEA
8/18Sun
nonstopAlaska Airlines
2h 44mSEA-DEN
$109
8/15Thu
nonstopAlaska Airlines
2h 58mDEN-SEA
8/21Wed
1 stopAlaska Airlines
4h 34mSEA-DEN
$139
12/6Fri
1 stopAmerican Airlines
8h 50mCOS-SEA
12/9Mon
1 stopAmerican Airlines
8h 38mSEA-COS
$222
12/6Fri
1 stopAmerican Airlines
7h 05mCOS-SEA
12/8Sun
1 stopAmerican Airlines
6h 57mSEA-COS
$256
12/5Thu
2 stopsUnited Airlines
9h 30mCOS-SEA
12/9Mon
1 stopUnited Airlines
5h 31mSEA-COS
$283
9/10Tue
2 stopsUnited Airlines
29h 16mMTJ-SEA
9/20Fri
1 stopUnited Airlines
24h 29mSEA-MTJ
$300

Search by stops

Search by airline

Search by price

Recent one-way flight deals

9/16Mon
nonstopFrontier
3h 02mDEN-SEA
$34
9/18Wed
nonstopFrontier
3h 02mDEN-SEA
$36
8/16Fri
nonstopDelta
3h 01mDEN-SEA
$55
9/11Wed
1 stopUnited Airlines
6h 46mDEN-SEA
$60
9/18Wed
1 stopUnited Airlines
6h 46mDEN-SEA
$76
7/18Thu
nonstopSun Country Air
2h 59mDEN-SEA
$78
8/26Mon
1 stopAlaska Airlines
5h 05mDEN-SEA
$85
8/3Sat
nonstopDelta
3h 01mDEN-SEA
$89
7/4Thu
1 stopAlaska Airlines
5h 40mDEN-SEA
$103
6/26Wed
1 stopSun Country Air
8h 24mDEN-SEA
$125

Search by stops

Search by airline

Search by price

Last minute flights from Colorado to Seattle

Last minute flight, train and bus deals

6/18Tue
nonstopFrontier
3h 03mDEN-SEA
6/25Tue
nonstopFrontier
2h 58mSEA-DEN
$128
6/16Sun
nonstopFrontier
3h 00mDEN-SEA
7/14Sun
nonstopFrontier
2h 50mSEA-DEN
$142
6/16Sun
multi-stopFrontier
10h 51mDEN-SEA
7/14Sun
nonstopFrontier
2h 50mSEA-DEN
$147
6/18Tue
multi-stop
17h 52mDEN-SEA
6/25Tue
nonstop
2h 58mSEA-DEN
$182
6/18Tue
multi-stop
17h 52mDEN-SEA
6/19Wed
nonstop
2h 53mSEA-DEN
$206
6/17Mon
multi-stopDelta
4h 42mDEN-SEA
7/1Mon
nonstopDelta
2h 41mSEA-DEN
$307
6/14Fri
nonstopAlaska Airlines
2h 56mDEN-SEA
6/15Sat
multi-stopAlaska Airlines
6h 59mSEA-DEN
$316
6/14Fri
nonstopUnited Airlines
2h 55mDEN-SEA
6/18Tue
multi-stopUnited Airlines
5h 45mSEA-DEN
$317
6/15Sat
nonstopDelta
3h 05mDEN-SEA
6/18Tue
multi-stopDelta
7h 26mSEA-DEN
$327
6/17Mon
multi-stopUnited Airlines
6h 25mDEN-SEA
6/17Mon
multi-stopUnited Airlines
5h 45mSEA-DEN
$551

Search by stops

Search by airline

Search by price

Flights to Seattle

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Colorado

Cabin classes:

$343
$606
$298
$93