Find flights
When to book
FAQs & Tips
Direct Flights
Deals

SEA

$48 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 6/8. 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 7/1
Mon 7/8

Search hundreds of travel sites at once for deals on flights to Seattle

In the last 7 days travelers have searched 42,787,818 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

January

High season

July

Cheapest flight

$48
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, +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, +63 more

ANA, Aer Lingus, +64 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, +63 more

ANA, Aer Lingus, +64 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

6/11Tue
nonstopFrontier
3h 03mDEN-SEA
6/18Tue
nonstopFrontier
2h 58mSEA-DEN
$96
6/18Tue
nonstopFrontier
3h 03mDEN-SEA
6/25Tue
nonstopFrontier
2h 59mSEA-DEN
$97
7/5Fri
nonstop
2h 59mDEN-SEA
7/8Mon
nonstop
2h 44mSEA-DEN
$158
6/20Thu
nonstop
3h 06mDEN-SEA
6/24Mon
nonstop
2h 42mSEA-DEN
$163
6/27Thu
nonstopAlaska Airlines
2h 59mDEN-SEA
6/30Sun
nonstopAlaska Airlines
2h 40mSEA-DEN
$187
11/12Tue
1 stopAmerican Airlines
7h 00mCOS-SEA
11/19Tue
1 stopAmerican Airlines
8h 54mSEA-COS
$188
8/21Wed
1 stopAlaska Airlines
6h 37mDEN-SEA
8/25Sun
nonstopAlaska Airlines
2h 39mSEA-DEN
$191
6/18Tue
nonstopDelta
3h 05mDEN-SEA
6/25Tue
nonstopDelta
2h 50mSEA-DEN
$212
11/12Tue
1 stopAmerican Airlines
7h 00mCOS-SEA
11/19Tue
2 stopsAmerican Airlines
10h 29mSEA-COS
$227
9/1Sun
1 stopDelta
10h 12mCOS-SEA
9/4Wed
1 stopDelta
9h 05mSEA-COS
$318

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/8Sat
nonstopFrontier
3h 03mDEN-SEA
$48
6/13Thu
nonstopFrontier
3h 03mDEN-SEA
$49
8/31Sat
nonstopDelta
3h 01mDEN-SEA
$69
8/3Sat
nonstopAlaska Airlines
2h 58mDEN-SEA
$89
6/27Thu
nonstopAlaska Airlines
2h 59mDEN-SEA
$94
8/6Tue
1 stopUnited Airlines
7h 29mDEN-SEA
$98
8/27Tue
1 stopUnited Airlines
7h 11mCOS-SEA
$103
7/12Fri
1 stopSun Country Air
13h 56mDEN-SEA
$125
8/2Fri
1 stopSun Country Air
15h 53mDEN-SEA
$145
6/8Sat
1 stopDelta
4h 42mDEN-SEA
$168

Search by stops

Search by airline

Search by price

Last minute flights from Colorado to Seattle

Last minute flight, train and bus deals

6/6Thu
nonstopFrontier
3h 03mDEN-SEA
6/8Sat
nonstopFrontier
2h 51mSEA-DEN
$119
6/5Wed
nonstopFrontier
3h 00mDEN-SEA
6/11Tue
nonstopFrontier
2h 58mSEA-DEN
$127
6/6Thu
nonstopFrontier
3h 03mDEN-SEA
6/7Fri
nonstopFrontier
2h 49mSEA-DEN
$129
6/2Sun
nonstopUnited Airlines
2h 55mDEN-SEA
6/6Thu
nonstopUnited Airlines
2h 45mSEA-DEN
$291
6/2Sun
nonstopDelta
3h 03mDEN-SEA
6/6Thu
multi-stopDelta
5h 37mSEA-DEN
$316
6/5Wed
multi-stopAmerican Airlines
9h 45mCOS-SEA
6/12Wed
multi-stopAmerican Airlines
8h 32mSEA-COS
$325
6/3Mon
multi-stopAlaska Airlines
5h 17mDEN-SEA
6/4Tue
multi-stopAlaska Airlines
6h 52mSEA-DEN
$326
6/5Wed
multi-stopUnited Airlines
6h 30mCOS-SEA
6/13Thu
multi-stopUnited Airlines
5h 15mSEA-COS
$330
6/3Mon
multi-stopDelta
6h 49mDEN-SEA
6/8Sat
multi-stopDelta
6h 00mSEA-DEN
$336
6/4Tue
multi-stopAmerican Airlines
7h 20mCOS-SEA
6/9Sun
multi-stopAmerican Airlines
9h 24mSEA-COS
$391

Search by stops

Search by airline

Search by price

Flights to Seattle

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Colorado

Cabin classes:

$260
$377
$327
$83