$69 Find Cheap Flights from Colorado to Washington

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

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

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

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

Useful Info
Useful Info

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$69
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Denver to Everett

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

Insights shared by verified travelers who flew the route from Colorado to Washington 
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.
F.Flew with United AirlinesDEN-PSCAug 2024
Check airline delay flight rate and choose another airline if you have important commitments to avoid frustration and missing important meetings.

FAQs for booking flights from Colorado to Washington

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

    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 Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado to Washington 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 Washington?

    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 from Colorado to Washington with an airline and back with another airline.

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

    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 from Colorado to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Washington?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington is Everett Paine Field Airport (PAE), with an average flight price of $87.

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Friday where round-trip tickets can be as cheap as $279. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $433 on average.

  • What is the cheapest time of day to fly to Washington?

    The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $255 on average. Morning departures are around 41% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $360.

  • What is the cheapest flight to Washington?

    The cheapest ticket to Washington from Colorado found in the last 72 hours was to Spokane, at $59 round-trip. The most popular route is Denver (DEN) to Seattle (SEA) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $126.

  • What is the cheapest month to fly from Colorado to Washington?

    The cheapest month for flights from Colorado to Washington is April, when tickets cost $374 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $506 and $506 respectively.

  • How far in advance should I book a flight from Colorado to Washington?

    To get a below average price on the flight from Colorado to Washington, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

  • How long is the flight to Washington?

    An average nonstop flight from Colorado to Washington takes 6h 39m, covering a distance of 900 miles. The shortest route is Denver (DEN) to Spokane (GEG) with an average flight time of 2h 21m.

  • What are the most popular destinations in Washington?

    Based on KAYAK flight searches, the most popular destination is Seattle (73% of total searches to Washington). The next most popular destinations are Portland (19%) and Spokane (6%). Searches for flights to Bellingham (1%), to Pasco (1%) and to Pullman (0%) are also popular.

Top 5 airlines serving from Colorado to Washington

 
Need help choosing which airline to fly with from Colorado to Washington? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Entertainment
8.1Boarding
7.8Comfort
7.1Food
8.5Crew
Airline reviews

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

10.0 ExcellentHelen, Jun 2025BLI - SEA
Read more Alaska Airlines reviews

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

We waited over an hour for our luggage to arrive at the carousel in Seattle.

Like the friendliness of the crew, each flight had a very very drunk person next to me and the last flight had a very obese man pushing me into the aisle while the crew kept ending up hitting me in the shoulder with the beverage carts.

Flight was about 30 minutes delayed. All staff were friendly and professional while keeping us updated.

My screen was hard to change channels….seemed it was worn out….i just gave up and read a book I brought

Booked a first class ticket from Anchorage to Seattle but was denied complimentary access to Alaska Lounge as our 1500 mile flight wasn’t long enough’

We were lucky to be seated in an upgraded row and received free drinks!!

Everyone was very helpful. My only critique was the very hard landing in Seattle. We felt the G force.

It was absolutely terrible due to the mother and her two children sitting across from us. The 2.5 year old jumped up and down on the tray table. Every time the kid screamed the mom would grab the kid and scream even louder into his face. Horrible flight. The mother stayed on her phone playing while the kids were so destructive to others hanging over seats, she never once tried to comfort or discipline them. She never once said you cannot jump on tray table. Definitely the worst flight ever. It was my first time with Alaska Airlines.

It was great. There was legroom. The food I ordered was creative and flavorful. The crew was kind and fun. Definitely would fly with them again.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Book cheap flights from Colorado to Washington

Recent round-trip flight deals

8/20Wed
nonstopFrontier
3h 06mDEN-SEA
8/24Sun
nonstopFrontier
2h 45mSEA-DEN
$120
8/23Sat
nonstopFrontier
3h 06mDEN-SEA
8/31Sun
nonstopFrontier
2h 49mSEA-DEN
$121
11/11Tue
nonstopAlaska Airlines
2h 54mDEN-PDX
11/12Wed
nonstopAlaska Airlines
2h 31mPDX-DEN
$157
8/13Wed
nonstopDelta
2h 54mDEN-SEA
8/19Tue
nonstopDelta
2h 45mSEA-DEN
$157
8/15Fri
1 stopSouthwest
6h 20mCOS-SEA
8/18Mon
1 stopSouthwest
7h 25mSEA-COS
$161
11/8Sat
nonstopAlaska Airlines
2h 54mDEN-PDX
11/18Tue
1 stopAlaska Airlines
5h 29mPDX-DEN
$167
7/23Wed
nonstopDelta
3h 07mDEN-SEA
8/13Wed
nonstopDelta
2h 45mSEA-DEN
$167
9/20Sat
1 stopSouthwest
6h 30mCOS-SEA
9/23Tue
1 stopSouthwest
9h 35mSEA-COS
$188
10/9Thu
1 stopUnited Airlines
6h 56mDEN-SEA
10/17Fri
nonstopUnited Airlines
2h 42mSEA-DEN
$213
8/23Sat
2 stopsUnited Airlines
8h 40mGJT-SEA
8/26Tue
1 stopUnited Airlines
6h 29mSEA-GJT
$228

Search by stops

Search by airline

Search by price

Recent one-way flight deals

8/18Mon
nonstopFrontier
3h 03mDEN-PAE
$69
7/21Mon
nonstopFrontier
3h 03mDEN-PAE
$70
10/14Tue
nonstopAlaska Airlines
2h 48mDEN-PDX
$78
8/26Tue
1 stopSouthwest
7h 05mCOS-SEA
$80
8/26Tue
2 stopsSouthwest
9h 10mCOS-SEA
$85
7/15Tue
nonstopUnited Airlines
2h 42mDEN-PDX
$89
7/15Tue
1 stopDelta
5h 51mDEN-GEG
$89
7/29Tue
1 stopAlaska Airlines
4h 50mDEN-PDX
$98
8/15Fri
nonstopDelta
2h 54mDEN-SEA
$99
8/7Thu
nonstopUnited Airlines
2h 23mDEN-GEG
$109

Search by stops

Search by airline

Search by price

Last minute flights from Colorado to Washington

Last minute flight, train and bus deals

6/17Tue
nonstopFrontier
2h 53mDEN-PDX
6/24Tue
nonstopFrontier
2h 37mPDX-DEN
$196
6/17Tue
nonstopFrontier
3h 08mDEN-SEA
6/30Mon
nonstopFrontier
2h 47mSEA-DEN
$198
6/17Tue
multi-stopDelta
6h 34mDEN-SEA
7/2Wed
nonstopDelta
2h 44mSEA-DEN
$287
6/17Tue
multi-stopDelta
5h 26mDEN-GEG
6/24Tue
multi-stopDelta
4h 15mGEG-DEN
$287
6/17Tue
nonstopSouthwest
2h 20mDEN-GEG
6/19Thu
nonstopSouthwest
2h 10mGEG-DEN
$312
6/17Tue
nonstopAlaska Airlines
2h 44mDEN-PDX
6/24Tue
multi-stopAlaska Airlines
7h 19mPDX-DEN
$317
6/17Tue
multi-stopAlaska Airlines
4h 53mDEN-SEA
7/2Wed
multi-stopAlaska Airlines
4h 12mSEA-DEN
$321
6/17Tue
multi-stopSouthwest
5h 35mDEN-GEG
6/19Thu
nonstopSouthwest
2h 10mGEG-DEN
$321
6/14Sat
multi-stopUnited Airlines
5h 09mGJT-PDX
7/17Thu
multi-stopUnited Airlines
4h 59mPDX-GJT
$329
6/14Sat
multi-stopUnited Airlines
10h 14mGJT-PDX
7/17Thu
multi-stopUnited Airlines
4h 59mPDX-GJT
$334

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Washington

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.