$328+ Cheap flights from Dulles Intl (IAD) to Sofia (SOF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOF
Nov 13 — Nov 201
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Sofia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Dulles Intl to SofiaExplore the most affordable flight options available from Dulles Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2026.
Explore the most affordable flight options available from Dulles Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2026.
This FlightHub deal was found by Cheapflights users on 10/12. 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.
Tue 12/19:20 pm -
1 stop34h 50m
Tue 12/89:40 pm -
1 stop21h 05m
Deal found 10/12![Turkish Airlines logo]()
$638
This oojo deal was found by Cheapflights users on 10/12. 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.
Tue 11/310:20 pm -
1 stop33h 50m
Tue 11/174:00 pm -
1 stop34h 25m
Deal found 10/12![Turkish Airlines logo]()
$647
This Turkish Airlines deal was found by Cheapflights users on 10/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:30 pm -
1 stop11h 10m
Tue 11/174:00 pm -
1 stop34h 25m
Deal found 10/12![Turkish Airlines logo]()
$649
This Mytrip deal was found by Cheapflights users on 10/9. 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 11/169:55 am -
2 stops24h 05m
Tue 11/244:00 pm -
3 stops35h 23m
Deal found 10/9![Multiple Airlines logo]()
$652
This Justfly.com deal was found by Cheapflights users on 10/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:40 pm -
1 stop15h 40m
Fri 12/411:55 am -
1 stop14h 30m
Deal found 10/11![Turkish Airlines logo]()
$664
This FlightHub deal was found by Cheapflights users on 10/14. 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.
Mon 12/79:20 pm -
1 stop28h 20m
Mon 12/219:40 pm -
1 stop21h 05m
Deal found 10/14![Turkish Airlines logo]()
$677
This CheapOair deal was found by Cheapflights users on 10/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:20 pm -
1 stop34h 50m
Fri 12/1811:55 am -
1 stop30h 50m
Deal found 10/14![Turkish Airlines logo]()
$689
This Mytrip deal was found by Cheapflights users on 10/14. 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.
Sat 11/285:25 pm -
2 stops24h 45m
Sat 12/54:55 pm -
2 stops34h 40m
Deal found 10/14![Multiple Airlines logo]()
$695
This FlightHub deal was found by Cheapflights users on 10/13. 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 12/69:20 pm -
1 stop28h 20m
Sun 12/209:30 am -
1 stop16h 55m
Deal found 10/13![Turkish Airlines logo]()
$697
This oojo deal was found by Cheapflights users on 10/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:30 pm -
1 stop18h 40m
Tue 11/244:00 pm -
1 stop26h 45m
Deal found 10/11![Turkish Airlines logo]()
$698
This Turkish Airlines deal was found by Cheapflights users on 10/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:20 pm -
1 stop16h 30m
Wed 12/94:00 pm -
1 stop34h 25m
Deal found 10/12![Turkish Airlines logo]()
$699
Best flights from Dulles Intl to SofiaDiscover carefully curated flight deals from Dulles Intl to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
Discover carefully curated flight deals from Dulles Intl to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
This Turkish Airlines deal was found by Cheapflights users on 10/13. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:20 pm -
1 stop16h 30m
Wed 12/94:00 pm -
1 stop34h 25m
Deal found 10/13![Turkish Airlines logo]()
$699
This United Airlines deal was found by Cheapflights users on 10/9. 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 3/285:25 pm -
1 stop11h 45m
Wed 4/76:20 am -
2 stops17h 02m
Deal found 10/9![United Airlines logo]()
$725
This United deal was found by Cheapflights users on 10/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/15:35 pm -
1 stop12h 40m
Sat 4/106:20 am -
2 stops20h 55m
Deal found 10/14![Multiple Airlines logo]()
$771
This United Airlines deal was found by Cheapflights users on 10/12. 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 3/215:20 pm -
2 stops23h 40m
Tue 3/302:05 pm -
1 stop12h 50m
Deal found 10/12![United Airlines logo]()
$734
This Turkish Airlines deal was found by Cheapflights users on 10/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2510:20 pm -
1 stop28h 20m
Thu 11/199:30 am -
1 stop33h 15m
Deal found 10/10![Turkish Airlines logo]()
$739
This United Airlines deal was found by Cheapflights users on 10/9. 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 11/256:11 am -
2 stops24h 04m
Wed 12/96:25 am -
2 stops17h 01m
Deal found 10/9![United Airlines logo]()
$788
This Turkish Airlines deal was found by Cheapflights users on 10/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:20 pm -
1 stop27h 20m
Fri 12/411:55 am -
1 stop30h 50m
Deal found 10/11![Turkish Airlines logo]()
$789
This Turkish Airlines deal was found by Cheapflights users on 10/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:15 pm -
1 stop13h 25m
Tue 11/244:00 pm -
1 stop26h 45m
Deal found 10/10![Turkish Airlines logo]()
$789
This United Airlines deal was found by Cheapflights users on 10/11. 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 11/85:35 pm -
1 stop12h 40m
Fri 12/42:10 pm -
2 stops17h 14m
Deal found 10/11![United Airlines logo]()
$791
This Turkish Airlines deal was found by Cheapflights users on 10/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:30 pm -
1 stop23h 20m
Fri 12/44:00 pm -
1 stop26h 45m
Deal found 10/11![Turkish Airlines logo]()
$789
This United Airlines deal was found by Cheapflights users on 10/10. 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.
Sun 11/85:35 pm -
1 stop12h 40m
Thu 12/32:00 pm -
2 stops15h 54m
Deal found 10/10![United Airlines logo]()
$793
Last-minute flights from Dulles Intl to SofiaDiscover last-minute flight deals from Dulles Intl to Sofia. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Sofia. Data last updated October 14, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 10/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:40 pm -
1 stop15h 40m
Fri 12/411:55 am -
1 stop14h 30m
Deal found 10/11![Turkish Airlines logo]()
$664
This Gotogate deal was found by Cheapflights users on 10/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/201:15 pm -
1 stop18h 45m
Wed 10/284:00 pm -
1 stop26h 45m
Deal found 10/13![Turkish Airlines logo]()
$677
This Turkish Airlines deal was found by Cheapflights users on 10/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:30 pm -
1 stop11h 10m
Tue 11/174:00 pm -
1 stop34h 25m
Deal found 10/12![Turkish Airlines logo]()
$649
This FlightHub deal was found by Cheapflights users on 10/12. 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.
Tue 11/32:30 pm -
1 stop17h 40m
Wed 11/114:00 pm -
1 stop34h 25m
Deal found 10/12![Turkish Airlines logo]()
$638
This oojo deal was found by Cheapflights users on 10/12. 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.
Tue 11/310:20 pm -
1 stop33h 50m
Tue 11/174:00 pm -
1 stop34h 25m
Deal found 10/12![Turkish Airlines logo]()
$647
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:20 pm -
1 stop34h 50m
Wed 12/24:00 pm -
1 stop34h 25m
Deal found 10/10![Turkish Airlines logo]()
$687
This oojo deal was found by Cheapflights users on 10/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:30 pm -
1 stop18h 40m
Tue 11/244:00 pm -
1 stop26h 45m
Deal found 10/11![Turkish Airlines logo]()
$698
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:30 pm -
1 stop12h 10m
Wed 11/254:00 pm -
1 stop34h 25m
Deal found 10/10![Turkish Airlines logo]()
$711
This Mytrip deal was found by Cheapflights users on 10/9. 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 11/169:55 am -
2 stops24h 05m
Tue 11/244:00 pm -
3 stops35h 23m
Deal found 10/9![Multiple Airlines logo]()
$652
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:50 pm -
1 stop21h 00m
Thu 12/35:40 am -
1 stop17h 40m
Deal found 10/12![Multiple Airlines logo]()
$704
This Mytrip deal was found by Cheapflights users on 10/14. 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.
Sat 11/285:25 pm -
2 stops24h 45m
Sat 12/54:55 pm -
2 stops34h 40m
Deal found 10/14![Multiple Airlines logo]()
$695
One-way flights from Dulles Intl to SofiaSearch for one-way flight options from Dulles Intl to Sofia. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
Search for one-way flight options from Dulles Intl to Sofia. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
This Expedia deal was found by Cheapflights users on 10/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/710:20 pm -
1 stop17h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Lufthansa logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:40 pm -
3 stops56h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:35 pm -
3 stops42h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 10/12. 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 10/1910:20 pm -
1 stop17h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![United Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/165:15 pm -
3 stops35h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$544
This BusinessClass deal was found by Cheapflights users on 10/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/157:40 pm -
2 stops14h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Multiple Airlines logo]()
$2,411
Find flight deals from Dulles Intl to Sofia
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 October 14, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $638 (FlightHub) |
One-way from | $328 (Expedia) |
Popular in | December |
Cheapest in | February |
Average price | $738 |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles 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 7,457,451 searches. Data last updated October 14, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sofia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Wed 4/7
10:20 pm-11:00 pm
1 stop17h 40m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$328
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Wed 4/7
9:55 am-10:20 am
2 stops17h 25m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$330
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Mon 11/23
7:40 pm-11:20 am
3 stops56h 40m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$330
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Mon 10/19
10:35 pm-11:35 pm
3 stops42h 00m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$376
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Mon 10/19
10:20 pm-11:15 pm
1 stop17h 55m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$500
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Wed 12/16
5:15 pm-11:35 am
3 stops35h 20m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$544
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Sun 12/6
9:20 pm-8:50 pm
1 stop16h 30m
Sofia
Wed 12/9
4:00 pm-7:25 pm
1 stop34h 25m
$699
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Sun 3/28
5:25 pm-12:10 pm
1 stop11h 45m
Sofia
Wed 4/7
6:20 am-4:22 pm
2 stops17h 02m
$725
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Sun 3/21
5:20 pm-11:00 pm
2 stops23h 40m
Sofia
Tue 3/30
2:05 pm-7:55 pm
1 stop12h 50m
$734
Washington, D.C.Sofia
IAD Washington, D.C. Dulles Intl - SOF Sofia
IADSOF
Washington, D.C. Dulles Intl
Sun 10/25
10:20 pm-8:40 am
1 stop28h 20m
Sofia
Thu 11/19
9:30 am-11:45 am
1 stop33h 15m
$739
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Dulles 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 Dulles Intl to Sofia in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sofia flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Sofia flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Sofia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sofia flights, Cheapflights users trust Ovago the most. Ovago 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 Washington, D.C. Dulles 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 Dulles Intl to Sofia
Have a flexible travel schedule? Discover the best time to fly to Sofia from Dulles Intl with our price prediction graph.
IAD-SOF
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 Washington, D.C. Dulles Intl Airport to Sofia
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Sofia?
Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Sofia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Sofia?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sofia (average of $572). Flying from Washington, D.C. Dulles Intl Airport to Sofia in December is currently the most expensive (average of $1,463). 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 Washington, D.C. Dulles Intl Airport to Sofia?
Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Sofia flights typically cost between $649 and $937 in December.The cheapest round-trip price found within the last 5 days was $638 on Turkish Airlines (Dec 1-Dec 8).
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 October 14, 2026.
See what other customers who have flown with Austrian Airlines,Turkish Airlines, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Sofia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.6
Overall
7.6
Food
6.8
Comfort
7.3
Entertainment
6.8
Crew
8.1
Reviews
1 / 20
2.0
MediocreNate,Dec 2025
IAD - GSP
Boarding
7.6
Overall
7.6
Food
6.8
Comfort
7.3
Entertainment
6.8
Crew
8.1
Reviews
1 / 20
2.0
MediocreNate,Dec 2025
IAD - GSP
Boarding
7.6
Overall
7.6
Food
6.8
Comfort
7.3
Entertainment
6.8
Crew
8.1
Reviews
1 / 20
2.0
MediocreNate,Dec 2025
IAD - GSP
Boarding
7.6
Overall
7.6
Food
6.8
Comfort
7.3
Entertainment
6.8
Crew
8.1
Reviews
1 / 20
2.0
MediocreNate,Dec 2025
IAD - GSP
Boarding
7.6
Overall
7.6
Food
6.8
Comfort
7.3
Entertainment
6.8
Crew
8.1
Reviews
1 / 20
2.0
MediocreNate,Dec 2025
IAD - GSP
Related info for your journey
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Dulles Intl and Sofia flights
Browse other Dulles Intl and Sofia flight options. Last updated on October 14, 2026.
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Top 4 airlines flying from Dulles Intl to Sofia
Discover the top 4 airlines that operate flights from Dulles 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 7,457,451 searches. Data last updated October 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$535 | Average$722 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$637 | Average$1,000 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$638 | Average$877 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$809 | Average$1,273 | FlexibilityNo cancel fee | On-time78% |