Find flights
When to book
FAQs & Tips
Airlines
Deals

Find cheap flights from Seattle to Fort Collins from $29

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Fort Collins departing on 6/1. 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
Fri 6/7
Fri 6/14

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

In the last 7 days travelers have searched 43,968,530 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.

Free to useThere are no hidden charges or fees.

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

Good to know

Low season

January

High season

July

Cheapest flight

$29
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 38% increase in price.
Flight from Seattle to Denver

When to book flights from Seattle to Fort Collins

Are your dates flexible? Find out the best times to travel from Seattle to Fort Collins based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Seattle to Fort Collins

  • Which airports will I be using when flying from Seattle to Fort Collins?

    When flying out of Seattle you’ll be using Seattle/Tacoma Intl. Fort Collins does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 54.6 mi away.

  • How long does a flight from Seattle to Fort Collins take?

    Direct flights cover the 1,022 miles separating Seattle and Fort Collins in about 2h 40m.

  • How many flights are there between Seattle and Fort Collins?

    73 direct flights run between Seattle and Fort Collins on a daily basis. On average, there are about 512 departures each week.

  • What’s the cheapest day of the week to fly between Seattle and Fort Collins?

    Consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Wednesdays and the most expensive ones on Tuesdays.

  • How does KAYAK find such low prices on flights from Seattle to Fort Collins?

    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 Seattle to Fort Collins.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fort Collins from Seattle 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 Seattle to Fort Collins?

    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 Fort Collins with an airline and back to Seattle with another airline.

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

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

  • Which airlines provide the cheapest flights from Seattle to Fort Collins?

    In the last 72 hours, the cheapest one-way ticket between Seattle and Fort Collins found on KAYAK was with Frontier for $29. Frontier offered a round-trip connection from $57 and Alaska Airlines from $197.

See more FAQs

Top tips for finding cheap flights from Seattle to Fort Collins

  • There is no airport in Fort Collins. Instead, you’ll be flying into Denver Airport when flying between Seattle and Fort Collins.
  • The cheapest flight from Seattle to Fort Collins was found 71 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is January.
See more tips

Top 5 airlines serving Seattle to Fort Collins

 
Need help choosing which airline to fly with from Seattle to Fort Collins? 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 9141 reviews
7.9Comfort
7.3Food
8.2Boarding
8.6Crew
7.3Entertainment
Airline reviews

Delayed an hour and sat without updates. Ended up an hour late to destination

6.0 GoodAnonymous, May 2024SEA - HNL
Read more about Alaska Airlines reviews

Delayed an hour and sat without updates. Ended up an hour late to destination

The flight was decent again if there was a place that you could put crying children that would be great. Or maybe make a rule against allowing infants on the plane.

Everything was fine -- on time, clear, clean. I don't want to pay extra for in-flight wi-fi

The flight was delayed because the pilots had not arrived on their previous flight yet. The flight was 100% full so it was pretty crowded. I miss having the screens on the back of the seats. It would be great if the Alaska planes had the clip so you can put your phone or tablet on the back of the seat in front of you to not strain your neck. Everything else was very smooth.

It was fine since it ensure we went to our destination in time.

I bought the cheapest ticket. No meal, no checked luggage so I didn't expect much and was surprised by how good the flight and service was. Alaska is now my favorite airline.

No entertainment, food was cookies & juice,water, soda or coffee.

My baggage was in another flight, anit was delayed for one hour.

The maintenance delay was seemingly handled very poorly... Little to no information was provided to the passengers sitting on board for an extended period of time. On a brighter note, at least the cabin crew (flight attendants) did the best they could. They seemingly were provided very little information with regards to the delay. Unless absolutely beyond my control, I can’t imagine buying a ticket on Alaska airlines again, based on this and a previous experience my wife recently had, along with complaints overheard from other passengers.

The only issue was in the wheelchair waiting area before we got on the plane. They seemed very disorganized. Everyone we encountered after that was great! We loved Cassandra at check-in. She was awesome. The flight attendants were wonderful too! The lady helping with the waiting wheelchair when we got off the plane was awesome too!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

Easy peasy. Crew was great. Take-off and landing nice anc chill (good job by the pilot). Thank you UA!

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Not have to pay for every single item to take a flight. Seating and delays sucked.

Terrible. Seats are bad and the baggage policy is inconsistent

Terrible. Initially we were shocked by the outrageous baggage fees we needed to pay at check in for our so-called "discounted, economy flight" - we paid over $200 (!!) for one check-in and 2 carry-on bags - this felt like a real bait-and-switch" scam. Our flight from Phoenix to SFO was delayed by 4 hours. Multiple apparent causes (from needing to make space for other planes that were landing late to problem with cabins pressure system, and whatever...). After de-boarding and re-boarding we still waited at least an hour on a cramped, poorly ventilated plane before take-off. Seats were cramped, uncomfortable - did not recline at all. No water until we were flying for a while. No complimentary snacks. Upon arrival at SFO my luggage was sent upstairs to the check-in counter. The customer service person there refused to let me examine a bunch of bags that were sitting on a nearby cart because it was "behind the counter", rather made me wait until another attendant did an exhaustive and failed (?computer) search, came back and told me they were unable to locate my bag. I asked her to look on the cart, lo and behold, there was my bag just a few feet away! Missed my choir rehearsal that evening due to all of the delays. One more thing, a few days later my husband and I tested positive for Covid. Since we both are fully vaccinated, careful about masking and have never had Covid previously, we will never know, but suspect we may have acquired the infection during the prolonged wait on your poorly ventilated plane (person in the row in front of us was coughing). After registering a complaint, we received a measly $50 voucher for future flights. Needless to say we have no intention of flying with Frontier Airlines ever again.

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

They lost my baggage on my connection flight, it’s been 24 hours since I put my claim in and still no update on my bags.

It’s a cheap airline. I wish they had better seats.

The only issues had were outside of Frontier’s control or weren’t expected. It was a two hour flight they completed fast. We landed almost an hour ahead of schedule. The issues with no entertainment or food weren’t issues since there was no expectations. The issue of the loud or crying babies was outside of frontiers control.

Seats are cramped and very uncomfortable. You have to pay for everything and it is too expensive.

Book cheap flights from Seattle to Fort Collins

Recent round-trip flight deals

6/4Tue
nonstopFrontier
3h 01mSEA-DEN
6/11Tue
nonstopFrontier
3h 03mDEN-SEA
$57
9/4Wed
nonstopFrontier
2h 43mSEA-DEN
9/7Sat
nonstopFrontier
3h 02mDEN-SEA
$58
9/4Wed
nonstopFrontier
2h 43mSEA-DEN
9/7Sat
nonstopFrontier
3h 02mDEN-SEA
$60
5/22Wed
nonstopFrontier
2h 52mSEA-DEN
5/29Wed
nonstopFrontier
3h 03mDEN-SEA
$62
6/1Sat
nonstopFrontier
2h 53mSEA-DEN
6/2Sun
nonstopFrontier
3h 03mDEN-SEA
$63
5/22Wed
nonstopFrontier
2h 52mSEA-DEN
5/29Wed
nonstopFrontier
3h 03mDEN-SEA
$65
6/4Tue
nonstop
3h 01mSEA-DEN
6/11Tue
1 stop
7h 00mDEN-SEA
$130
5/31Fri
nonstop
3h 01mSEA-DEN
6/2Sun
1 stop
16h 35mDEN-SEA
$140
6/17Mon
nonstopAlaska Airlines
2h 40mSEA-DEN
6/27Thu
nonstopAlaska Airlines
2h 59mDEN-SEA
$197
5/29Wed
1 stopAmerican Airlines
5h 28mSEA-DEN
6/5Wed
1 stopAmerican Airlines
6h 29mDEN-SEA
$206

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/1Sat
nonstopFrontier
2h 53mSEA-DEN
$29
5/22Wed
nonstopFrontier
2h 52mSEA-DEN
$32
6/12Wed
nonstopAlaska Airlines
2h 43mSEA-DEN
$75
6/12Wed
nonstopDelta
2h 44mSEA-DEN
$80
5/29Wed
1 stopAlaska Airlines
4h 11mSEA-DEN
$103
6/10Mon
nonstopDelta
2h 44mSEA-DEN
$114
5/22Wed
1 stopAmerican Airlines
7h 40mSEA-DEN
$120
5/22Wed
1 stopUnited Airlines
6h 57mSEA-DEN
$124
5/15Wed
1 stopUnited Airlines
5h 42mSEA-DEN
$143
5/20Mon
1 stopAmerican Airlines
5h 41mSEA-DEN
$153

Search by stops

Search by airline

Search by price

Last minute flights from Seattle to Fort Collins

Last minute flight, train and bus deals

5/10Fri
nonstopFrontier
2h 50mSEA-DEN
5/18Sat
nonstopFrontier
3h 02mDEN-SEA
$135
5/11Sat
nonstopFrontier
2h 47mSEA-DEN
5/18Sat
nonstopFrontier
3h 02mDEN-SEA
$137
5/11Sat
multi-stopAlaska Airlines
7h 13mSEA-DEN
5/18Sat
nonstopAlaska Airlines
2h 54mDEN-SEA
$296
5/11Sat
multi-stopAmerican Airlines
5h 28mSEA-DEN
5/18Sat
multi-stopAmerican Airlines
9h 09mDEN-SEA
$298
5/11Sat
multi-stopDelta
5h 05mSEA-DEN
5/21Tue
nonstopDelta
3h 03mDEN-SEA
$302
5/12Sun
multi-stopAlaska Airlines
6h 47mSEA-DEN
5/15Wed
multi-stopAlaska Airlines
5h 12mDEN-SEA
$306
5/11Sat
multi-stopUnited Airlines
6h 36mSEA-DEN
5/13Mon
nonstopUnited Airlines
3h 03mDEN-SEA
$312
5/9Thu
nonstopDelta
2h 48mSEA-DEN
5/12Sun
nonstopDelta
3h 03mDEN-SEA
$317
5/11Sat
multi-stopUnited Airlines
6h 36mSEA-DEN
5/18Sat
multi-stopUnited Airlines
8h 28mDEN-SEA
$321
5/13Mon
multi-stopAmerican Airlines
11h 42mSEA-DEN
5/16Thu
multi-stopAmerican Airlines
6h 22mDEN-SEA
$648

Search by stops

Search by airline

Search by price

Flights to Fort Collins