IND - SOF

$649 Find Cheap Flights from Indianapolis to Sofia

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Indianapolis to Sofia departing on 3/11. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Indianapolis to Sofia, 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 Indianapolis to Sofia, as well as popular online travel agencies
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Cheap Flights from Indianapolis to Sofia (IND-SOF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Indianapolis to Sofia 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 Indianapolis to Sofia

Wed, Mar 11 - Sun, Mar 15
United Airlines Logo
6:30 pm - 10:45 pmIND-SOF
22h 15m2 stops
United Airlines Logo
2:25 pm - 3:05 pmSOF-IND
30h 40m2 stops
$649United Airlines
Find Deal
Wed, Mar 11 - Sun, Mar 15
United Airlines Logo
12:40 pm - 6:20 pmIND-SOF
23h 40m2 stops
United Airlines Logo
6:10 am - 11:48 pmSOF-IND
23h 38m2 stops
$793United Airlines
Find Deal

Everything you should know

Cheapest round-trip
$649
Typical prices: $805-$833
United Airlines
Wed 3/11Sun 3/15
IND - SOF • 2 stops
Cheapest one-way
Multiple Airlines
Thu 11/6
IND - SOF • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sofia!
Booking Insights

KAYAK's insights & trends for Indianapolis to Sofia flights

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

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

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

If you are looking for a flight deal from Indianapolis to Sofia, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Sofia, Tuesday is the cheapest day to fly and Monday is the most expensive.

Good to know

Low seasonFebruary
Cheapest flight$649
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 34% increase in price.
Flight from Indianapolis to Sofia

When to book flights from Indianapolis to Sofia

Are your dates flexible? Find out the best times to travel from Indianapolis to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Indianapolis to Sofia

  • What is the cheapest flight from Indianapolis to Sofia?

    In the last 3 days, the lowest price for a flight from Indianapolis to Sofia was $649 for a round-trip ticket.

  • Do I need a passport to fly between Indianapolis and Sofia?

    A passport is required to fly from Indianapolis to Sofia.

  • Which aircraft models fly most regularly from Indianapolis to Sofia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Indianapolis to Sofia?

    Star Alliance is the only airline alliance operating flights between Indianapolis and Sofia.

  • Which is the best airline for flights from Indianapolis to Sofia, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Indianapolis to Sofia are United Airlines and Lufthansa. With an average price for the route of $1,210 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $1,242 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Indianapolis to Sofia?

    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 Indianapolis to Sofia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from Indianapolis 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 Indianapolis to Sofia?

    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 Sofia with an airline and back to Indianapolis with another airline. Booking your flights between Indianapolis and SOF can sometimes prove cheaper using this method.

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

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

Reviews of the top airlines flying from Indianapolis to Sofia

 
See real verified KAYAK customer reviews for airlines flying from Indianapolis to Sofia. 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 Indianapolis to Sofia? 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 9002 reviews
7.3Comfort
6.6Food
7.7Boarding
7.1Entertainment
8.1Crew
Airline reviews

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

10.0 ExcellentKaren, Nov 2025EWR - LAX
Read more United Airlines reviews

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

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