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Sofia

$277+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SOF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Sofia are usually found in March or February, booked 6 days in advance, depart on a Saturday or Monday and return on a Friday

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 December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 12/293:30 pmPHX - SOF
2 stops36h 45mUnited Airlines
Sat 1/102:00 pmSOF - PHX
2 stops41h 40mUnited Airlines
Deal found 12/11$948
This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:00 amPHX - SOF
2 stops29h 10mMultiple Airlines
Sat 1/106:05 amSOF - PHX
3 stops25h 42mMultiple Airlines
Deal found 12/11$1,220
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Tue 12/237:40 pmPHX - SOF
2 stops57h 10mUnited Airlines
Wed 12/317:55 amSOF - PHX
2 stops39h 04mUnited Airlines
Deal found 12/11$1,662
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:30 pmPHX - SOF
2 stops36h 45mLufthansa
Thu 1/12:35 pmSOF - PHX
2 stops37h 03mLufthansa
Deal found 12/11$1,731
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:00 amPHX - SOF
2 stops25h 50mMultiple Airlines
Wed 1/149:40 pmSOF - PHX
3 stops34h 07mMultiple Airlines
Deal found 12/10$1,852
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Tue 12/237:40 pmPHX - SOF
2 stops57h 10mUnited Airlines
Tue 1/66:00 amSOF - PHX
2 stops41h 16mUnited Airlines
Deal found 12/11$1,854
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sun 12/2112:45 amPHX - SOF
2 stops27h 30mUnited Airlines
Wed 12/317:55 amSOF - PHX
2 stops19h 42mUnited Airlines
Deal found 12/11$1,918
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/244:53 pmPHX - SOF
2 stops44h 52mUnited Airlines
Fri 1/26:10 amSOF - PHX
2 stops39h 17mUnited Airlines
Deal found 12/10$1,922
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/205:10 pmPHX - SOF
2 stops40h 10mUnited Airlines
Thu 1/12:35 pmSOF - PHX
2 stops34h 12mUnited Airlines
Deal found 12/11$2,047
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sun 12/2112:45 amPHX - SOF
2 stops27h 30mUnited Airlines
Thu 1/12:35 pmSOF - PHX
2 stops42h 42mUnited Airlines
Deal found 12/11$2,051

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$728
(oojo)

One-way from

$277
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,586
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. 25% potential increase in price ($321 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Sofia that are best for you.

Fly from

Sky Harbor Intl

Fly to

Sofia

Route

Depart

Return

Price

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Sun 4/26

8:30 am-11:10 pm

2 stops28h 40m

Sofia

Tue 5/5

6:10 am-10:15 pm

2 stops26h 05m

$745

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 4/29

11:26 am-6:40 pm

2 stops21h 14m

Sofia

Thu 5/7

2:00 pm-9:22 am

2 stops29h 22m

$745

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Sun 4/26

8:30 am-11:10 pm

2 stops28h 40m

Sofia

Fri 5/8

6:20 am-5:58 pm

2 stops21h 38m

$745

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 4/29

2:29 pm-11:10 pm

2 stops22h 41m

Sofia

Wed 5/6

6:20 am-5:58 pm

2 stops21h 38m

$745

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Thu 1/29

8:25 pm-11:15 am

1 stop29h 50m

Sofia

Mon 2/2

5:25 pm-6:15 pm

1 stop33h 50m

$833

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Thu 1/29

11:35 am-10:45 pm

2 stops26h 10m

Sofia

Mon 2/2

1:45 pm-6:06 pm

2 stops37h 21m

$857

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Mon 5/4

9:46 pm-8:40 pm

2 stops36h 54m

Sofia

Mon 5/18

8:00 pm-7:00 pm

1 stop33h 00m

$873

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Tue 3/3

11:59 pm-11:30 pm

3 stops38h 31m

$277

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Sun 3/8

8:40 pm-1:30 pm

3 stops55h 50m

$293

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

Wed 3/4

2:05 pm-2:55 am

3 stops51h 50m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 14 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Phoenix Sky Harbor Intl Airport-Sofia flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 2025.

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 time of day to fly from PHX to SOF?

Find hourly flight availability from Sky Harbor Intl to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Sofia at noon. Doing so could potentially save you 5% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Sofia?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Sofia flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 12, 2025.
Read reviews from past customers who have flown Austrian Airlines, United Airlines, and American 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
879 reviews

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Overall

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Austrian Airlines
7.6
Good
879 reviews
Austrian Airlines
7.6
Good
879 reviews

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Overall

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
United Airlines
7.4
Good
9,095 reviews
Austrian Airlines
7.6
Good
879 reviews

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Overall

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
American Airlines
7.2
Good
11,049 reviews
Austrian Airlines
7.6
Good
879 reviews

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Overall

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Lufthansa
6.8
Okay
7,626 reviews
Austrian Airlines
7.6
Good
879 reviews

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Overall

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
British Airways
6.7
Okay
7,571 reviews
Austrian Airlines
7.6
Good
879 reviews

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Crew

8.1

Overall

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andrew,Sep 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

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, United Airlines can have you in Sofia from Phoenix Sky Harbor Intl Airport in 28h 40m. 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 United Airlines and Lufthansa, with the lowest prices starting at $629 and $643, respectively. You may be able to fly from Phoenix Sky Harbor Intl Airport to Sofia for 39% 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.

See more FAQs

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Complete your trip to Sofia by adding a car rental and/or hotel reservation to your travel itinerary.
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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest$571Average$1,019FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$629Average$965FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$643Average$1,031FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$713Average$1,182FlexibilityNo cancel feeOn-time71%
KLMCheapest$733Average$1,020FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$922Average$1,360FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$933Average$1,018FlexibilityNo cancel feeOn-time67%

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