Find flights
When to book
FAQs & Tips
Direct Flights
Deals

SEA

$39 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 6/3. 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
Thu 6/13
Thu 6/20

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

In the last 7 days travelers have searched 42,566,405 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

$39
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

6/4Tue
nonstopFrontier
3h 02mDEN-SEA
6/5Wed
nonstopFrontier
2h 53mSEA-DEN
$72
6/11Tue
nonstopFrontier
3h 03mDEN-SEA
6/11Tue
nonstopFrontier
2h 58mSEA-DEN
$73
5/24Fri
1 stop
13h 10mDEN-SEA
5/29Wed
nonstop
2h 52mSEA-DEN
$124
5/24Fri
1 stop
13h 10mDEN-SEA
5/26Sun
nonstop
2h 55mSEA-DEN
$125
5/24Fri
1 stopSun Country Air
13h 10mDEN-SEA
5/26Sun
1 stopSun Country Air
15h 00mSEA-DEN
$173
7/2Tue
nonstopDelta
3h 00mDEN-SEA
7/9Tue
nonstopDelta
2h 33mSEA-DEN
$177
5/24Fri
1 stopSun Country Air
13h 10mDEN-SEA
5/27Mon
1 stopSun Country Air
14h 55mSEA-DEN
$178
8/16Fri
nonstopDelta
3h 02mDEN-SEA
8/22Thu
nonstopDelta
2h 39mSEA-DEN
$187
10/2Wed
1 stopAmerican Airlines
6h 04mDEN-SEA
10/8Tue
1 stopAmerican Airlines
5h 20mSEA-DEN
$206
9/12Thu
1 stopAmerican Airlines
6h 56mCOS-SEA
10/6Sun
1 stopAmerican Airlines
8h 28mSEA-COS
$248

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/3Mon
nonstopFrontier
3h 05mDEN-SEA
$39
6/17Mon
nonstopFrontier
3h 00mDEN-SEA
$40
5/24Fri
1 stopSun Country Air
13h 10mDEN-SEA
$79
6/11Tue
1 stopSun Country Air
7h 00mDEN-SEA
$85
8/17Sat
nonstopDelta
3h 02mDEN-SEA
$89
7/12Fri
nonstopDelta
3h 01mDEN-SEA
$94
8/17Sat
1 stopAmerican Airlines
7h 29mCOS-SEA
$94
6/18Tue
1 stopUnited Airlines
7h 41mDEN-SEA
$98
5/27Mon
1 stopUnited Airlines
5h 40mDEN-SEA
$138
8/2Fri
1 stopAmerican Airlines
8h 49mCOS-SEA
$229

Search by stops

Search by airline

Search by price

Last minute flights from Colorado to Seattle

Last minute flight, train and bus deals

5/18Sat
nonstopFrontier
3h 02mDEN-SEA
5/21Tue
nonstopFrontier
3h 01mSEA-DEN
$121
5/16Thu
nonstopFrontier
3h 05mDEN-SEA
5/21Tue
nonstopFrontier
3h 01mSEA-DEN
$122
5/16Thu
nonstop
3h 05mDEN-SEA
5/27Mon
multi-stop
8h 01mSEA-DEN
$180
5/16Thu
nonstop
3h 05mDEN-SEA
5/26Sun
multi-stop
17h 10mSEA-DEN
$190
5/15Wed
multi-stopDelta
6h 34mDEN-SEA
6/12Wed
nonstopDelta
2h 50mSEA-DEN
$242
5/15Wed
multi-stopAmerican Airlines
6h 22mDEN-SEA
6/12Wed
multi-stopAmerican Airlines
5h 52mSEA-DEN
$262
5/16Thu
nonstopDelta
3h 03mDEN-SEA
5/20Mon
nonstopDelta
2h 48mSEA-DEN
$287
5/15Wed
multi-stopAmerican Airlines
9h 09mDEN-SEA
6/12Wed
multi-stopAmerican Airlines
5h 52mSEA-DEN
$291
5/15Wed
multi-stopUnited Airlines
8h 23mDEN-SEA
5/16Thu
multi-stopUnited Airlines
8h 37mSEA-DEN
$326
5/17Fri
multi-stopUnited Airlines
7h 03mCOS-SEA
5/27Mon
multi-stopUnited Airlines
4h 39mSEA-COS
$386

Search by stops

Search by airline

Search by price

Flights to Seattle

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Colorado

Cabin classes:

$294
$291
$322
$76