$254 Flights from Denver (DENA) to Sofia (SOF)

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Flight deals from Denver to Sofia

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

Find the cheapest month to fly from Denver to Sofia

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

Denver to Sofia: Alternative routes

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

Denver to Sofia: Flight information

The things to know before you go.
Cheapest flight found$254
Cheapest month to flyMarch

Finding cheap flights from Denver to Sofia: Frequently asked questions

The best price we found for a round-trip flight from Denver to Sofia is $575. 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 Denver to Sofia. But we found flights with one stop from $575.
There are no flights flying from Denver to Sofia, as of February 2026.
The cheapest month to fly from Denver to Sofia is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Sofia Airport on Wednesday, April 1, 2026.
No airlines currently offer direct flights between Denver and Sofia 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 Sofia 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 Sofia is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Sofia is Lufthansa.

Flying from Denver to Sofia Airport (SOF): What you need to know

  • Denver International Airport (DEN) is Denver's main airport. Check out your options for reserving a flight from Denver to Sofia Airport (SOF) taking off from here.

  • Sofia is eight hours ahead of Denver. Sofia Airport is located in Sofia, which runs on the UTC+2 timezone.

  • Get to the airport on time so you don't miss your flight from Denver to SOF. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

  • If you're jetting off during a public holiday or other peak period, allow extra time. Arrive two hours before domestic flights and up to four hours before international departures. Check-in and security lines will be longer.

Airports in Denver

Denver International Airport (DEN)

  • Consider adding a stopover to find cheap flights from Denver to SOF. Simply deselect 'Direct flights only' when searching for departures from Denver International Airport (DEN). Break up your trip (and maybe get a better deal) by stopping at one of these popular options:

    • London Heathrow Airport (LHR)

    • Frankfurt Airport (FRA)

    • Franz Josef Strauss Airport (MUC)

  • Traveling from central Denver to DEN takes around 1 hour 30 minutes by public transport. If you ride-share, drive or take a cab, you'll cover the 25 miles in 35 minutes or so, depending on traffic conditions.

  • Get your flight from Denver to Sofia Airport off to an easy start. Just a quick ride from Denver International Airport, spend the night at Baymont by Wyndham Denver International Airport and you'll be well-rested for the journey ahead.

  • Denver International Airport earns top marks for its on-time performance. 80.23% of flights that depart DEN reach their destination without delay.

  • You'll find DEN at 8500 Pena Boulevard.

About Sofia Airport (SOF)

  • If you have a late flight from Denver to Sofia Airport, few things beat the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and sleeping not long after at one of these hotels near SOF:

  • Say yes to new adventures by picking up a Sofia Airport rental car. Grab a set of wheels from MEX, Surprice or NU Car Rentals and experience the lesser-explored corners of Sofia and beyond.

  • To get the best deal, reserve your ride around one week ahead of your Denver to Sofia Airport flight.

Getting from Sofia Airport (SOF) to central Sofia

  • From Sofia Airport, central Sofia is around 7 miles away. It takes about 15 minutes to reach the city center by car.

  • When traveling on public transport, expect a journey time of about 35 minutes.

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

  • The lowest price we've found for a one-way ticket from Denver to Sofia Airport is $254. For a return flight on this route, the best price is $575. Depending on when and how early you book, these fares may change.

  • To pick up cheap flights from Denver to SOF, book in advance. Airlines generally offer lower fares when tickets are first released.

  • The 'Whole month' tool will show you the cheapest Denver to Sofia Airport tickets throughout the month. It's an easy way to find a bargain if your travel plans aren't set in stone.

  • Locking in a cheap plane ticket from Denver to SOF is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as there's a better deal.

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

The best time to fly from Denver to Sofia Airport (SOF)

  • Picture the kind of break you want when planning your trip dates. April is the quietest month to go to Sofia. August is when most people book flights from Denver to Sofia Airport (SOF), which may be ideal if you'd rather travel when it's busy.

  • Book a Denver to SOF plane ticket departing in August if you want to experience the city during its warmest month. You can expect temperatures in Sofia to range from 57ºF to 86ºF.

  • If you want to travel in cooler conditions, look for a cheap ticket from Denver to Sofia Airport in January when temperatures are between 12ºF and 45ºF.

More about Sofia

  • When it comes to looking for somewhere to rest your head, you'll find the top stays in Sofia right here. Check out these hotels after locking in your flight from Denver to Sofia Airport:

  • Every great journey has to include some sightseeing. Free Sofia Tour, Boyana Church and National Historical Museum are must-do's during your Sofia adventure.

Explore more of Bulgaria

  • Plovdiv is just one of the many cities in Bulgaria waiting to be explored after you've experienced Sofia. Around 80 miles away to the south-east, top sights here include Plovdiv Old Town, Plovdiv Roman Theatre and Ancient Plovdiv Municipal Institute.

  • Around 120 miles east of Sofia, Stara Zagora is another essential stop in Bulgaria. Start your sightseeing at Парк „5-и октомври“ (Градската градина), Zagorka Lake and The Zelen Klin Park.

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