$573 Find Cheap Flights from Sofia to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to Colorado departing on 8/30. 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
1 adult, Economy

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Colorado, as well as popular online travel agencies
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Best Colorado Flight Deals from Sofia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop$757
Denver
Denver1 stop$757

Cheap Flights from Sofia to Colorado

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to Colorado that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Colorado

Thu, Sep 4 - Tue, Sep 9
Turkish Airlines Logo
9:25 am - 5:55 pmSOF-DEN
17h 30m1 stop
Turkish Airlines Logo
7:50 pm - 2:45 pmDEN-SOF
33h 55m1 stop
$757Turkish Airlines
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Fri, Sep 5 - Tue, Sep 9
 Logo
7:00 am - 6:46 pmSOF-DEN
20h 46m2 stops
 Logo
10:19 am - 2:00 pmDEN-SOF
18h 41m2 stops
Fri, Sep 5 - Mon, Sep 8
KLM Logo
7:00 am - 5:11 pmSOF-DEN
19h 11m2 stops
KLM Logo
10:19 am - 2:00 pmDEN-SOF
18h 41m2 stops
$799KLM
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Wed, Sep 3 - Thu, Sep 11
United Airlines Logo
6:15 am - 3:35 pmSOF-DEN
18h 20m1 stop
United Airlines Logo
5:00 pm - 11:00 pmDEN-SOF
21h 00m2 stops
$809United Airlines
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Wed, Sep 3 - Thu, Sep 11
United Airlines Logo
6:15 am - 3:35 pmSOF-DEN
18h 20m1 stop
United Airlines Logo
8:13 am - 12:00 pmDEN-SOF
18h 47m2 stops
$810United Airlines
Find Deal
Wed, Sep 3 - Fri, Sep 12
Lufthansa Logo
6:15 am - 3:35 pmSOF-DEN
18h 20m1 stop
Lufthansa Logo
3:50 pm - 10:50 pmDEN-SOF
22h 00m1 stop
$811Lufthansa
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Mon, Sep 1 - Tue, Sep 9
Lufthansa Logo
6:00 am - 1:45 pmSOF-DEN
16h 45m1 stop
Lufthansa Logo
5:00 pm - 6:40 pmDEN-SOF
16h 40m2 stops
$822Lufthansa
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Fri, Sep 5 - Fri, Sep 12
Air Canada Logo
12:45 pm - 6:18 pmSOF-DEN
38h 33m2 stops
Air Canada Logo
5:37 pm - 12:00 pmDEN-SOF
33h 23m2 stops
$829Air Canada
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Mon, Sep 1 - Wed, Sep 10
Air Canada Logo
12:45 pm - 6:18 pmSOF-DEN
38h 33m2 stops
Air Canada Logo
9:40 am - 1:15 pmDEN-SOF
18h 35m2 stops
$1,000Air Canada
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Wed, Sep 3 - Mon, Sep 8
KLM Logo
7:00 am - 3:28 pmSOF-DEN
17h 28m2 stops
KLM Logo
10:19 am - 2:00 pmDEN-SOF
18h 41m2 stops
$1,060KLM
Find Deal
Useful Info

KAYAK's insights & trends for Sofia to Colorado flights

Get data-powered insights and trends into flights from Sofia to Colorado to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Sofia to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sofia to Colorado is November, when tickets cost $652 (return) on average. On the other hand, the most expensive months are May and August, when the average cost of round-trip tickets is $1,058 and $1,003 respectively.

What’s the cheapest day of the week to fly from Sofia to Colorado?

The average price of all round-trip flights from Sofia to Colorado clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Colorado on a Friday and more expensive on a Thursday. On your return trip to Sofia, you should consider flying back on a Thursday, and avoid Saturdays for better deals.


Good to know

Low seasonApril
High seasonJuly
Cheapest flight$573
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Sofia to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Sofia 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 Sofia to Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sofia 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 Sofia 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 Sofia 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 Sofia 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 Sofia to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • 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 $691 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 $816.

Top 3 airlines serving from Sofia to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sofia 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.
7.4
United AirlinesOverall score based on 8798 reviews
7.0Entertainment
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
Airline reviews

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

10.0 ExcellentAnonymous, Jun 2025YVR - DEN
Read more United Airlines reviews

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

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

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

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 .

Not as good as expected Air Can needs to improve totally rated on internet as worst

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 check in process at Istanbul airport caused my family a great deal of stress and disappointment due to the following factors: 1) WE HAD TO PAY US$330 for check on bags, despite holding Economy tickets that Turkish airlines website clearly states that flights from Istanbul to Miami had a 2 checked bags allowance. 2) Airport staff not only lacked empathy for senior travelers (75 yrs old and 71 yrs old), but were also rude as well. The supervisor at check it offered "if you don't pay for the bags, you can just remain and sleep at the airport for however long you wish. What a terrible way to treat customers !!! 3) We were bumped from agent to agent to agent FIVE times, showing everyone the communication we received telling us we had the 2 bags entitlement. Two elderly people lugging 4 suitcase around and around the Turkish terminal. Again, what a sad way to treat customers !!! 4) We need a case opened to get a refund for the amount we paid. Something is amiss, screams unethical, and sounds unscrupulous......At First , we were told we must pay for 4 bags. All of a sudden, it became 2 bags, and finally all 4 bags were checked on with payments demanded for 2. Why did it vary from agent to agent???? 5) OVERALL, A TERRIBLE AND SUSPICIOUSLLY UNSCRUPULOUS EXPERIENCE FLYING WITH TURKISH AIRLINES. WE ARE TERRIBLY DISAPPOINTED AND SAD THAT OUR VISIT TO A BEAUTIFUL CITY ENDED IN SUCH A HORRIBLE EXPERIENCE

I recently flew with Turkish Airlines, and I can confidently say it was one of the best travel experiences I’ve ever had. From the moment I boarded, the crew was incredibly attentive, warm, and professional. They went above and beyond to ensure everyone was comfortable and well taken care of throughout the flight. The highlight, however, was the food! I’ve flown with many airlines, but Turkish Airlines sets the bar incredibly high when it comes to in-flight dining. Every meal was fresh, flavorful, and beautifully presented. The variety of dishes, even on a long-haul flight, was impressive. It felt like dining at a high-end restaurant at 35,000 feet! The seats were comfortable, the entertainment options were great, and the overall atmosphere made the journey enjoyable. Turkish Airlines truly excels in combining luxury and hospitality. I wouldn’t hesitate to fly with them again—highly recommend!

One of the best flights I have been on in a while.

Here's a sample answer: "Honestly, I was really impressed with Turkish Airlines, but if I had to suggest one area for improvement, it would be: - *More efficient boarding process*: I noticed that boarding took a bit longer than expected, which might be frustrating for passengers with tight connections.

Not worth pay business class and get service economy class

In this long haul flight, flight attendants never stopped moving and giving excellent service. Very impressive. Very comfortable seats and excellent food

In sharp contrast to the modern glitzy airport, boarding facilities were primitive. Passengers had to board buses and walk up steep stairs in bitter cold with carry-on baggages. I found no reason why aerobridge was not provided.

Service and food were decent, seats are a bit too narrow. Leg room is normal. Bathroom should be cleaned more frequently. WiFi is cumbersome and should be simplified.

they have cancell the flight with no reasons, My parents were in the cold weather in the airport for 24 hours they did not give any hotel and food. I hate Turkish Airline, this is our last time that we ha ve chosen Turkish Airline.

Same as before boarding process and lack of crew experience in the process

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

Beautifully maintained airplane, good food, professional crew, top-notch communication. I highly recommend Lufthansa for intercontinental flights between the United States and Europe.

Lufthansa is my favorite airline and have flown oversea with them for the past 25 years: i always found them so professional and incredibly efficient from checking in to arrival. I also love their Munich or Frankfurt airports.

The United flight was excellent! The flight attendants were attentive and nice, and the food was very good! And the glasses are larger than on Lufthansa flights! I don’t want to have to ask for 15 glasses of water because their glasses are ridiculously small!

The food not that great. Did not like the fact that we could not purchase upgrade at the airport

We paid for business class, and my seat did not work at all. Each time I wanted to adjust the position, an attendant had to come to physically force the seat into its new position. They tried to fix it by fiddling with the electronics (military reset, for example), to no avail. Also, the food was just mediocre. We were at the end of a serving section, so they ran out of several choices. (This was on the flight from Los Angeles to Munich.)

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

They gave us chocolates twice (for whoever would like an extra chocolate - kids did!). I asked for an extra water, and I was given one. Crew was very friendly!

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I like the service and the efficiency. I am lactose intolerant and the lactose intolerant meal in business class was not astounding. Also, the business class fully reclining seats are not that comfortable.

Everything you need to know for your flight from Sofia to Colorado

Information on your arrival and departure airports

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