$465 Flights from Sofia (SOF) to Denver International (DEN)

Compare Sofia to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

Book the best Denver International fare with no extra fees

Flight deals from Sofia to Denver International

Looking for a cheap last-minute deal or the best round-trip flight from Sofia to Denver International? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Sofia to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Sofia to Denver International flights are currently cheapest in March.

Sofia to Denver International: Alternative routes

Compare routes from Sofia to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Sofia to Denver: Flight information

The things to know before you go.
Cheapest flight found$465
Cheapest month to flyMarch

Finding cheap flights from Sofia to Denver International: Frequently asked questions

The best price we found for a round-trip flight from Sofia to Denver International is $713. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Sofia to Denver International. But we found flights with one or more stops from $713.
There are no flights flying from Sofia to Denver International, as of February 2026.
The cheapest month to fly from Sofia to Denver International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Sofia Airport to Denver International Airport on Thursday, May 28, 2026.
No airlines currently offer direct flights between Sofia Airport and Denver International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to Denver International.

Flying from Sofia Airport (SOF) to Denver International Airport (DEN): what you need to know

  • Denver's timezone is UTC-6, which makes Denver eight hours behind Sofia.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are tried-and-true travel tips. Be at the airport with enough time to board your SOF to DEN flight.

  • During popular months like August, it's best to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead of international flights when you travel during a high season in general.

  • If you'd like to explore another city along the way, just deselect 'Direct flights only' when searching for your ticket from Sofia Airport to Denver International Airport. These are the top stopovers between SOF and DEN:

    • Franz Josef Strauss Airport

    • Dublin Airport

    • Istanbul Ataturk Airport

How to find the cheapest flights from Sofia Airport (SOF) to Denver International Airport (DEN)

  • The lowest price we've found for a one-way Sofia Airport to Denver International Airport flight is $465. A round-trip ticket is currently $713. Depending on the availability when you book, these fares may change.

  • To get your hands on cheap tickets from SOF to DEN, book as early as you can. Airlines tend to offer lower prices when flights are first released.

  • Getting cheap flights from Sofia Airport to Denver International Airport is easy if you can be flexible with your travel plans. Use the 'Whole month' search tool to see the lowest prices across the month and score a great deal.

  • Landing cheap flights from SOF to DEN is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when a new deal comes up.

  • Tailor your trip with filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Sofia Airport to Denver International Airport.

Handy information about Sofia Airport (SOF)

  • When it comes to Sofia Airport's on-time performance, 66.73% of flights arrive within the expected timeframe.

  • Sofia Airport is about 7 miles from central Sofia. If you're ride-sharing, catching a cab or driving from the center, it'll take you 15 minutes or so to arrive, depending on the traffic.

  • You can expect a journey time of around 35 minutes when using public transport.

  • Get your trip off to a relaxed start by staying near SOF. Whether you're taking an early flight from Sofia Airport to Denver International Airport or want to avoid feeling rushed, these stays are ideal:

Arriving at Denver International Airport (DEN)

  • Consider staying at Baymont by Wyndham Denver International Airport after arriving from your Sofia Airport to Denver International Airport flight. It's only a short drive from DEN and a good option if you'd like to get some rest right away.

  • Pick up a Denver International Airport rental car and discover Denver and beyond with your own set of wheels. Routes Car Rentals, Dollar and Budget are top providers to choose from here.

  • Lock in the best deal by reserving your vehicle from Denver International Airport around one week ahead of your trip.

Getting from Denver International Airport (DEN) to central Denver

  • The street address for DEN is 8500 Pena Boulevard.

  • Denver International Airport to the center of Denver has a drive time of around 35 minutes. It's approximately 25 miles away.

  • Getting to the center on public transport takes around 1 hour 30 minutes.

When to fly to Denver International Airport (DEN)

  • The quietest month for a flight from Sofia Airport to Denver International Airport is April, while July is the busiest. Pick the best time to visit Denver based on whether you prefer a faster pace or a more relaxed vibe.

  • Book your flight from Sofia Airport to Denver International Airport for July if you'd like to visit Denver during its warmest month. You can expect temperatures of between 57ºF and 90ºF.

  • Search for cheap tickets from SOF to DEN in January if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between 16ºF and 45ºF on average.

Explore more of United States

  • Colorado Springs is just one of the many cities in United States waiting to be discovered once you've seen Denver. Around 65 miles away to the south, check out popular attractions including US Northern Command (USNORTHCOM) / North American Aerospace Defense Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).

  • Around 8 miles east of Denver, Aurora is another essential stop in United States. Experience major highlights starting with Magellan's Travel Solutions and Gear, The Fairways at Lowry and Retired Enlisted Association Inc.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.