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$384+ Cheap flights from Sky Harbor Intl (PHX) to Sofia (SOF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SOF
Apr 28 — May 51
Tue 4/28
Tue 5/5
1 adult, Economy
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Cheap flight deals from Sky Harbor Intl to Sofia

Cheapest flights from Sky Harbor Intl to Sofia
Explore the most affordable flight options available from Sky Harbor Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 29, 2026.

This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/34:30 pm
PHX
-
SOF
1 stop16h 50m
British Airways
Mon 11/25:25 pm
SOF
-
PHX
1 stop33h 50m
British Airways
Deal found 3/25$745
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:34 pm
PHX
-
SOF
2 stops20h 11m
United Airlines
Thu 11/126:10 am
SOF
-
PHX
2 stops24h 10m
United Airlines
Deal found 3/28$751
This Justfly.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:15 am
PHX
-
SOF
2 stops21h 25m
Lufthansa
Tue 10/66:10 am
SOF
-
PHX
2 stops21h 06m
Lufthansa
Deal found 3/28$769
This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:05 pm
PHX
-
SOF
1 stop30h 20m
British Airways
Sun 8/309:05 pm
SOF
-
PHX
1 stop26h 50m
British Airways
Deal found 3/25$775
This FlightHub deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:42 pm
PHX
-
SOF
2 stops21h 33m
Lufthansa
Tue 6/96:10 am
SOF
-
PHX
2 stops21h 49m
Lufthansa
Deal found 3/25$780
This FlightHub deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2311:15 am
PHX
-
SOF
2 stops21h 25m
Lufthansa
Mon 8/317:25 pm
SOF
-
PHX
2 stops34h 59m
Lufthansa
Deal found 3/29$781
This United Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:50 pm
PHX
-
SOF
2 stops15h 50m
United Airlines
Wed 10/146:20 am
SOF
-
PHX
2 stops18h 39m
United Airlines
Deal found 3/29$782
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
PHX
-
SOF
2 stops20h 10m
United Airlines
Tue 10/66:10 am
SOF
-
PHX
3 stops27h 54m
United Airlines
Deal found 3/26$783
This British Airways deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:13 pm
PHX
-
SOF
2 stops35h 17m
British Airways
Mon 5/188:10 pm
SOF
-
PHX
2 stops32h 24m
British Airways
Deal found 3/25$794

Find flight deals from Sky Harbor Intl to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$745
(oojo)

One-way from

$384
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$633
Provider with most accurate pricing for Phoenix Sky Harbor Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Sofia flights.
Search Deals
From Phoenix Sky Harbor Intl to Sofia
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Sofia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($237 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 29, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 8/12

8:50 am-12:10 pm

2 stops17h 20m

Sofia

Wed 10/14

6:20 am-12:04 am

3 stops27h 44m

$782

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 8/26

6:00 am-12:10 pm

2 stops20h 10m

Sofia

Tue 10/6

6:10 am-12:04 am

3 stops27h 54m

$783

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Mon 5/4

11:13 pm-8:30 pm

2 stops35h 17m

Sofia

Mon 5/18

8:10 pm-6:34 pm

2 stops32h 24m

$794

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 8/12

9:45 am-6:40 pm

3 stops22h 55m

Sofia

Sun 8/30

6:20 am-8:45 pm

2 stops24h 25m

$843

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Fri 5/1

9:00 pm-8:10 pm

1 stop37h 10m

Sofia

Fri 5/8

2:15 pm-1:05 pm

1 stop32h 50m

$895
Quickest round-trip

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Sun 5/10

7:30 am-12:10 pm

2 stops18h 40m

Sofia

Sun 5/17

6:20 am-3:14 pm

2 stops18h 54m

$903

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 7/22

7:24 am-11:15 pm

2 stops29h 51m

Sofia

Fri 8/7

2:10 pm-7:46 pm

2 stops39h 36m

$912

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Tue 7/14

9:20 am-2:00 pm

2 stops18h 40m

Sofia

Fri 7/31

7:00 am-6:05 pm

2 stops21h 05m

$1,002

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Mon 7/27

4:21 pm-6:40 pm

2 stops16h 19m

Sofia

Wed 8/5

6:20 am-11:46 pm

2 stops27h 26m

$1,006
Cheapest one-way

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Mon 7/13

9:45 am-6:40 pm

3 stops22h 55m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Compare providers for flights from Sky Harbor Intl to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Sofia in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Phoenix Sky Harbor Intl Airport-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sky Harbor Intl to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Sky Harbor Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Sofia

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Sofia. Price data was last updated on March 13, 2026.

To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to Sofia, you should look to book at least 6 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Sofia?

Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Sofia (average of $561). Flying from Phoenix Sky Harbor Intl Airport to Sofia in June is currently the most expensive (average of $827). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Phoenix Sky Harbor Intl Airport to Sofia?

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sofia. Reviews last updated March 29, 2026.
Read reviews from past customers who have flown Austrian Airlines,United Airlines, andAmerican Airlines from Phoenix Sky Harbor Intl Airport to Sofia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
903 reviews

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Austrian Airlines
7.6
Good
903 reviews
Austrian Airlines
7.6
Good
903 reviews

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
United Airlines
7.4
Good
9,510 reviews
Austrian Airlines
7.6
Good
903 reviews

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
American Airlines
7.1
Good
11,520 reviews
Austrian Airlines
7.6
Good
903 reviews

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Lufthansa
6.8
Okay
7,872 reviews
Austrian Airlines
7.6
Good
903 reviews

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
British Airways
6.7
Okay
7,830 reviews
Austrian Airlines
7.6
Good
903 reviews

Comfort

7.3

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sofia from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Sofia, you will be flying into Sofia. Sofia (SOF) is just 4.2 mi from the center of the city. Sofia is the only Sofia airport and it handles 0 inbound flights from Phoenix Sky Harbor Intl per day. 7 airlines have flights to Sofia from Phoenix Sky Harbor Intl on a regular basis.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Sofia?

    For as low as $745, British Airways can have you in Sofia from Phoenix Sky Harbor Intl Airport in 16h 50m. Phoenix Sky Harbor Intl Airport and Sofia are separated by a distance of 6464 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Sofia round-trip?

    Flying on Austrian Airlines is currently your cheapest option to Sofia, with prices starting at $571. Additional round-trip tickets that might be worth considering are offered by Lufthansa and United Airlines, with the lowest prices starting at $601 and $621, respectively. You may be able to fly from Phoenix Sky Harbor Intl Airport to Sofia for 27% less than the average price by searching for these airlines.

  • Can I find deals for flights from Sky Harbor Intl to Sofia that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Sofia.

  • Can I find deals for business class flights from Sky Harbor Intl to Sofia?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Sofia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Sofia?

    Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Sofia (average of $561). Flying from Phoenix Sky Harbor Intl Airport to Sofia in June is currently the most expensive (average of $827). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 7 airlines flying from Sky Harbor Intl to Sofia

Discover the top 7 airlines that operate flights from Sky Harbor Intl to Sofia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest$571Average$1,010FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$601Average$783FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$621Average$835FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$670Average$1,274FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$694Average$973FlexibilityNo cancel feeOn-time67%
KLMCheapest$710Average$1,020FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$1,132Average$1,182FlexibilityNo cancel feeOn-time71%

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