$505 Flights from Sofia (SOF) to Denver International (DEN)

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Flight deals from Sofia to Denver International

Looking for a cheap last-minute deal or the best round-trip flight from Sofia Airport to Denver International Airport? If you want to travel next month, round-trip fares start from $891. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Sofia to Denver International from $505 one-way

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 September.

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$505
Cheapest month to flySeptember

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 $851. 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 $851.
There are no flights flying from Sofia to Denver International, as of June 2026.
The cheapest month to fly from Sofia to Denver International is usually September.
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, September 17, 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, Wizz Air offers the cheapest flight tickets to Denver International.

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

  • Denver is nine hours behind Sofia and follows the UTC-7 timezone.

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

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

  • Consider adding a stopover when booking your ticket from Sofia Airport to Denver International Airport. Just uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Here's where you can stop between SOF and DEN:

    • Istanbul Airport

    • Munich Airport

    • Dublin Airport

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

  • $505 is currently the lowest price for a one-way Sofia Airport to Denver International Airport flight. A return flight starts at $851. These fares may change depending on demand and availability.

  • Don't leave things to the last moment. You're more likely to get cheap tickets from SOF to DEN if you book ahead. Airlines often offer some fantastic early bird discounts.

  • 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' function to see the best prices across every month and snap up a great deal.

  • You won't have to check back in every day to see if fares have dropped when you set up a Price Alert. We'll notify you as soon as there's a new deal on cheap flights from SOF to DEN.

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

Handy information about Sofia Airport (SOF)

  • Of all flights departing from Sofia Airport, 77% land on schedule at their destination.

  • Central Sofia to Sofia Airport is approximately 6 miles. Depending on traffic, it'll take about 25 minutes to get there if you're ride-sharing, catching a cab or driving.

  • The trip on public transport typically takes 30 minutes.

  • Need a handy hotel near SOF? If you've booked an early flight from Sofia Airport to Denver International Airport, these stays will have you sleeping moments from your check-in counter:

Arriving at Denver International Airport (DEN)

  • Once your Sofia Airport to Denver International Airport flight has arrived, kick back at a hotel close by. Baymont by Wyndham Denver International Airport is a comfortable option that's not too far from DEN.

  • Travel at your own pace with a Denver International Airport rental car. Book your wheels from Routes Car Rentals, Dollar or Budget and experience more of Denver and beyond.

  • Reserving your vehicle from Denver International Airport around one week ahead can help you get the best possible rate.

Getting from Denver International Airport (DEN) to central Denver

  • You'll find DEN at 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.

  • Traveling to the center on public transport will take you around 35 minutes.

When to fly to Denver International Airport (DEN)

  • July is the busiest month for flights from Sofia Airport to Denver International Airport. To escape the crowds, go to Denver in January.

  • Book your flight from Sofia Airport to Denver International Airport for July if you'd like to explore 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'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 16ºF and 45ºF on average.

Explore more of the United States

  • You've visited Denver, now it's time to discover more of the United States. Journey around 65 miles south to Colorado Springs to tick off its top sights. From Garden of the Gods to Pikes Peak Region Attractions and Red Rock Canyon, there's plenty to keep you busy.

  • If you're interested in discovering another great destination in the United States, consider Aurora, about 8 miles east of Denver. Plains Conservation Center, DeLaney Homestead Historic District and Aircraft viewing are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.