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$344+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SOF
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Sofia are usually found in October or March, booked 39 days in advance, depart on a Saturday or Monday and return on a Friday

Cheap 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 julio 3, 2025.

Round-trip from

$867
(Gurufare)

One-way from

$344
(Kiwi.com)

Popular in

May

Cheapest in

October

Average price

$964
From Phoenix Sky Harbor Intl to Sofia
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One-way flight from Phoenix Sky Harbor Intl to Sofia
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Highest demand for flights based on searches. 16% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julio 3, 2025.

This Gurufare deal was found by Cheapflights users on 7/3. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/37:39 amPHX - SOF
2 stops43h 51mBritish Airways
vie. 9/262:20 pmSOF - PHX
1 stop33h 55mBritish Airways
Deal found 7/3$867
This Gurufare deal was found by Cheapflights users on 7/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/148:40 pmPHX - SOF
1 stop16h 35mMultiple Airlines
lun. 8/258:00 pmSOF - PHX
1 stop32h 30mMultiple Airlines
Deal found 7/2$912
This United Airlines deal was found by Cheapflights users on 7/3. 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.
dom. 8/176:00 amPHX - SOF
3 stops19h 40mUnited Airlines
dom. 8/248:00 amSOF - PHX
2 stops26h 15mUnited Airlines
Deal found 7/3$929
This KLM deal was found by Cheapflights users on 7/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/317:09 amPHX - SOF
2 stops20h 51mKLM
jue. 8/77:00 amSOF - PHX
2 stops20h 38mKLM
Deal found 7/3$965
This Gurufare deal was found by Cheapflights users on 7/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/157:04 amPHX - SOF
2 stops18h 56mLufthansa
mar. 7/226:20 amSOF - PHX
2 stops23h 56mLufthansa
Deal found 7/1$1,340
This SWISS deal was found by Cheapflights users on 7/1. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/1510:50 amPHX - SOF
2 stops37h 15mSWISS
mar. 7/221:15 pmSOF - PHX
3 stops41h 01mSWISS
Deal found 7/1$1,380
This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/158:54 amPHX - SOF
2 stops17h 56mAustrian Airlines
mar. 12/166:45 pmSOF - PHX
2 stops33h 10mAustrian Airlines
Deal found 7/2$1,666

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 julio 3, 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

mié. 9/3

7:39 am-1:30 pm

2 stops43h 51m

Sofia

vie. 9/26

2:20 pm-2:15 pm

1 stop33h 55m

$867

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

jue. 8/14

8:40 pm-11:15 pm

1 stop16h 35m

Sofia

lun. 8/25

8:00 pm-6:30 pm

1 stop32h 30m

$912

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

dom. 8/17

6:00 am-11:40 am

3 stops19h 40m

Sofia

dom. 8/24

8:00 am-12:15 am

2 stops26h 15m

$929

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

jue. 7/31

7:09 am-2:00 pm

2 stops20h 51m

Sofia

jue. 8/7

7:00 am-5:38 pm

2 stops20h 38m

$965

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

mar. 7/15

7:04 am-12:00 pm

2 stops18h 56m

Sofia

mar. 7/22

6:20 am-8:16 pm

2 stops23h 56m

$1,340

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

mar. 7/15

10:50 am-10:05 am

2 stops37h 15m

Sofia

mar. 7/22

1:15 pm-8:16 pm

3 stops41h 01m

$1,380

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

lun. 12/15

8:54 am-11:50 am

2 stops17h 56m

Sofia

mar. 12/16

6:45 pm-6:55 pm

2 stops33h 10m

$1,666

PhoenixSofia

PHX - SOF

PHXSOF

Phoenix Sky Harbor Intl

vie. 8/15

5:11 pm-9:25 am

3 stops54h 14m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 June 27, 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 39 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, November is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Sofia (average of $632). Flying from Phoenix Sky Harbor Intl Airport to Sofia in June is currently the most expensive (average of $1,189). 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.

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 julio 3, 2025.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Sofia at noon. Doing so could potentially save you 6% 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 Saturday evenings 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 julio 3, 2025.
Read reviews from past customers who have flown KLM, Austrian Airlines, and SWISS 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.
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,366 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Austrian Airlines
7.6
Good
809 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
SWISS
7.5
Good
1,654 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,845 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Lufthansa
6.8
Okay
7,207 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was 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.

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

    Flying on British Airways is currently your cheapest option to Sofia, with prices starting at $867. Additional round-trip tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at $929 and $965, respectively. You may be able to fly from Phoenix Sky Harbor Intl Airport to Sofia for 6% 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, November is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Sofia (average of $632). Flying from Phoenix Sky Harbor Intl Airport to Sofia in June is currently the most expensive (average of $1,189). 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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Complete your trip

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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$544Average$1,018FlexibilityNo cancel feeOn-time67%
Austrian AirlinesCheapest$571Average$1,010FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$621Average$1,157FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$629Average$992FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$662Average$1,042FlexibilityNo cancel feeOn-time76%
KLMCheapest$665Average$981FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$818Average$1,293FlexibilityNo cancel feeOn-time70%

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