$69 Find Cheap Flights from Washington to Colorado

1 adult
1 adult, Economy

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

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 seasonApril
High seasonJuly
Cheapest flight$69
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Everett to Denver

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

Insights shared by verified travelers who flew the route from Washington to Colorado 
Verified travelerFlew with Alaska AirlinesSEA-DENMar 2025
Alaska Air is very efficient & on-time so allow enough time to get luggage, go thru Customs & Immigration, & long security lines. Terminals in SEA are readily accessible by trains but more signage is needed. Fortunately, Information booths are everywhere & are manned by very helpful staff.
MichaelFlew with DeltaSEA-DENApr 2025
Train from Denver airport to downtown is easy to use.
Verified travelerFlew with Alaska AirlinesSEA-DENMay 2024
When flying from Seattle to Denver, be ready to take our any electronics and put them in separate bins when going through security. You will also most likely have to take off your jacket as well. During our flight back the flight randomly changed so be on the lookout in case that happens to you! It was by chance that I checked my ticket and saw that the gate changed last minute.
Verified travelerFlew with United AirlinesGEG-DENApr 2024
Time to switch planes should be more than 60 minutes.
Verified travelerFlew with United AirlinesPSC-DENFeb 2024
TSA doesn't open til 1030 so getting to the airport early isn't helpful

FAQs for booking flights from Washington to Colorado

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

    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 Washington to Colorado.

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

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

    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 Washington to Colorado 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 Washington to Colorado?

    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 Washington to Colorado 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 Colorado?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Colorado is Denver Intl Airport (DEN), with an average flight price of $180.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Saturday where round-trip tickets can be as cheap as $269. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $334 on average.

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

    The cheapest time of day to fly to Colorado is generally at night, when round-trip flights cost $210 on average. Morning departures are around 15% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $332.

  • What is the cheapest flight to Colorado?

    The cheapest ticket to Colorado from Washington found in the last 72 hours was to Denver, at $74 round-trip. The most popular route is Spokane (GEG) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $74.

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

    The cheapest month for flights from Washington to Colorado is May, when tickets cost $420 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $698 and $696 respectively.

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

    To get a below average price on the flight from Washington to Colorado, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

  • How long is the flight to Colorado?

    An average nonstop flight from Washington to Colorado takes 5h 21m, covering a distance of 913 miles. The shortest route is Spokane (GEG) to Denver (DEN) with an average flight time of 2h 10m.

  • What are the most popular destinations in Colorado?

    Based on KAYAK flight searches, the most popular destination is Denver (93% of total searches to Colorado). The next most popular destinations are Colorado Springs (2%) and Durango (2%). Searches for flights to Grand Junction (2%), to Montrose (1%) and to Aspen (0%) are also popular.

Top 5 airlines serving from Washington to Colorado

 
Need help choosing which airline to fly with from Washington to Colorado? 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
7.1Food
8.1Boarding
7.8Comfort
7.1Entertainment
8.5Crew
Airline reviews

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

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

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

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.

Very pleasant and the flight felt like it went by quick

All flight entertainment is from your own device and there was an $8 charge to connect. also 1 drink and a small bag of pretzels was all that was given to us. other that that the seats were good and the flight itself was as expected.

It is very bad they do not give you money back

They lost our bag and it took them days to find it. Terrible communication and lots of lies about where it was. Their system hasn’t merged with Hawaiian yet they route people on shared flights with Hawaiian, creating an administrative nightmare.

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

Major flight delays, it was a 1.5-hour delay. The gate kept changing about 3 times in Seattle. very hectic and chaotic.

More leg room in back seats. Can you require people to smell good on planes? ha ha Staff was great! Plane was comfortable. I enjoyed the movies and TV. Smooth take off and landing.

The only problem was the time delay. Kudos to the counter agent in Seattle. Very helpful and gracious.

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

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

WiFi on the flight was not working. Thus, entertainment options were limited.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

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.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

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

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Stuck in Phoenix for two days, not even a hotel voucher offered.

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Book cheap flights from Washington to Colorado

Recent round-trip flight deals

9/13Sat
nonstopFrontier
2h 51mSEA-DEN
9/20Sat
nonstopFrontier
3h 12mDEN-SEA
$120
8/14Thu
nonstopFrontier
2h 52mSEA-DEN
8/18Mon
nonstopFrontier
3h 05mDEN-SEA
$121
9/27Sat
nonstopDelta
2h 44mSEA-DEN
9/30Tue
nonstopDelta
3h 14mDEN-SEA
$157
7/30Wed
nonstopDelta
2h 45mSEA-DEN
8/16Sat
nonstopDelta
2h 54mDEN-SEA
$167
10/25Sat
nonstopSouthwest
2h 35mSEA-DEN
10/27Mon
nonstopSouthwest
3h 00mDEN-SEA
$177
8/21Thu
1 stopSouthwest
7h 45mSEA-COS
8/24Sun
1 stopSouthwest
6h 30mCOS-SEA
$183
9/23Tue
nonstopAlaska Airlines
2h 51mSEA-DEN
9/27Sat
1 stopAlaska Airlines
4h 53mDEN-SEA
$187
9/3Wed
1 stopAlaska Airlines
6h 03mPDX-DEN
9/16Tue
nonstopAlaska Airlines
2h 43mDEN-PDX
$187
7/3Thu
nonstopUnited Airlines
2h 51mSEA-DEN
7/8Tue
1 stopUnited Airlines
5h 56mDEN-SEA
$237
7/3Thu
1 stopUnited Airlines
5h 58mSEA-COS
7/11Fri
1 stopUnited Airlines
5h 24mCOS-SEA
$243

Search by stops

Search by airline

Search by price

Recent one-way flight deals

7/21Mon
nonstopFrontier
2h 45mPAE-DEN
$69
10/17Fri
1 stopFrontier
5h 09mSEA-DEN
$71
11/8Sat
nonstopAlaska Airlines
2h 31mPDX-DEN
$78
8/13Wed
nonstopUnited Airlines
2h 51mSEA-DEN
$79
8/13Wed
nonstopUnited Airlines
2h 32mPDX-DEN
$79
10/28Tue
1 stopAlaska Airlines
5h 29mPDX-DEN
$84
7/15Tue
1 stopDelta
7h 29mGEG-DEN
$89
7/12Sat
nonstopSouthwest
2h 30mPDX-DEN
$89
7/17Thu
1 stopDelta
7h 10mPSC-DEN
$95
9/4Thu
1 stopSouthwest
4h 50mPDX-DEN
$104

Search by stops

Search by airline

Search by price

Last minute flights from Washington to Colorado

Last minute flight, train and bus deals

6/17Tue
nonstopFrontier
2h 47mSEA-DEN
7/15Tue
nonstopFrontier
3h 06mDEN-SEA
$169
6/17Tue
nonstopFrontier
2h 47mSEA-DEN
6/21Sat
nonstopFrontier
3h 08mDEN-SEA
$196
6/17Tue
multi-stopUnited Airlines
4h 44mSEA-HDN
6/23Mon
multi-stopUnited Airlines
7h 46mHDN-SEA
$317
6/15Sun
multi-stopDelta
5h 13mPSC-DEN
6/17Tue
multi-stopDelta
4h 19mDEN-PSC
$317
6/16Mon
multi-stopSouthwest
7h 05mSEA-DEN
7/8Tue
nonstopSouthwest
2h 50mDEN-SEA
$327
6/17Tue
multi-stopSouthwest
7h 05mSEA-DEN
6/24Tue
multi-stopSouthwest
7h 45mDEN-SEA
$336
6/15Sun
nonstopUnited Airlines
2h 25mPSC-DEN
6/21Sat
nonstopUnited Airlines
2h 31mDEN-PSC
$339
6/17Tue
multi-stopDelta
4h 15mGEG-DEN
6/21Sat
multi-stopDelta
5h 18mDEN-GEG
$357
6/15Sun
nonstopAlaska Airlines
2h 42mSEA-DEN
6/18Wed
nonstopAlaska Airlines
3h 01mDEN-SEA
$372
6/17Tue
multi-stopAlaska Airlines
7h 22mPDX-DEN
6/24Tue
multi-stopAlaska Airlines
5h 47mDEN-PDX
$381

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Colorado

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. 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.