$311+ Cheap flights from Seattle (SEA) to Bulgaria
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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Jul 16 — Jul 231
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Bulgaria with Cheapflights
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Cheapest flights from Seattle to BulgariaExplore the most affordable flight options available from Seattle to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2026.
Explore the most affordable flight options available from Seattle to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2026.
This Gotogate deal was found by Cheapflights users on 6/15. 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.
Wed 10/76:50 pm
SEA
- SOF
1 stop13h 50m
Multiple Airlines
Tue 10/206:10 am
SOF
- SEA
2 stops18h 12m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$745
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/82:50 pm
SEA
- SOF
1 stop17h 30m
United Airlines
Thu 11/196:25 am
SOF
- SEA
1 stop15h 35m
United Airlines
Deal found 6/13![United Airlines logo]()
$747
This Booking.com deal was found by Cheapflights users on 6/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:15 pm
SEA
- SOF
1 stop33h 45m
Turkish Airlines
Wed 10/219:10 pm
SOF
- SEA
1 stop30h 10m
Turkish Airlines
Deal found 6/15![Turkish Airlines logo]()
$749
This British Airways deal was found by Cheapflights users on 6/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:50 pm
SEA
- SOF
1 stop15h 20m
British Airways
Wed 11/259:00 pm
SOF
- SEA
1 stop24h 30m
British Airways
Deal found 6/13![British Airways logo]()
$750
This United Airlines deal was found by Cheapflights users on 6/15. 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 12/1210:45 pm
SEA
- SOF
2 stops28h 25m
United Airlines
Thu 12/246:25 am
SOF
- SEA
1 stop15h 35m
United Airlines
Deal found 6/15![United Airlines logo]()
$751
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:07 am
SEA
- SOF
2 stops27h 13m
United Airlines
Fri 11/206:00 am
SOF
- SEA
1 stop17h 00m
United Airlines
Deal found 6/13![United Airlines logo]()
$753
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:50 pm
SEA
- SOF
1 stop17h 30m
United Airlines
Tue 11/246:25 am
SOF
- SEA
2 stops24h 29m
United Airlines
Deal found 6/13![United Airlines logo]()
$755
This Air Canada deal was found by Cheapflights users on 6/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:45 am
SEA
- SOF
2 stops24h 35m
Air Canada
Thu 12/246:00 am
SOF
- SEA
2 stops25h 57m
Air Canada
Deal found 6/15![Air Canada logo]()
$757
This United Airlines deal was found by Cheapflights users on 6/15. 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 12/132:00 pm
SEA
- SOF
1 stop23h 00m
United Airlines
Thu 12/246:25 am
SOF
- SEA
1 stop15h 35m
United Airlines
Deal found 6/15![United Airlines logo]()
$759
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:00 pm
SEA
- SOF
1 stop23h 00m
United Airlines
Fri 11/206:00 am
SOF
- SEA
1 stop17h 00m
United Airlines
Deal found 6/13![United Airlines logo]()
$761
This Gotogate deal was found by Cheapflights users on 6/15. 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 10/66:50 pm
SEA
- SOF
1 stop13h 50m
Multiple Airlines
Fri 10/166:20 am
SOF
- SEA
2 stops18h 02m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$762
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:50 pm
SEA
- VAR
2 stops34h 25m
Lufthansa
Tue 9/154:00 pm
VAR
- SEA
2 stops29h 55m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$868
Best flights from Seattle to BulgariaDiscover carefully curated flight deals from Seattle to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 16, 2026.
Discover carefully curated flight deals from Seattle to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 16, 2026.
This Turkish Airlines deal was found by Cheapflights users on 6/12. 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 8/317:15 pm
SEA
- SOF
1 stop15h 05m
Turkish Airlines
Fri 9/119:35 am
SOF
- SEA
1 stop35h 05m
Turkish Airlines
Deal found 6/12![Turkish Airlines logo]()
$768
This United Airlines deal was found by Cheapflights users on 6/16. 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 12/92:50 pm
SEA
- SOF
1 stop21h 55m
United Airlines
Tue 12/296:00 am
SOF
- SEA
2 stops24h 54m
United Airlines
Deal found 6/16![United Airlines logo]()
$774
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:50 pm
SEA
- VAR
2 stops34h 25m
Lufthansa
Tue 9/154:00 pm
VAR
- SEA
2 stops29h 55m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$868
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 8/37:10 pm
SEA
- BOJ
1 stop17h 25m
Multiple Airlines
Wed 8/1910:05 am
BOJ
- SEA
2 stops41h 05m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,266
This BusinessClass deal was found by Cheapflights users on 6/15. 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.
Thu 7/3011:56 pm
SEA
- BOJ
2 stops36h 34m
Aer Lingus
Thu 8/611:25 pm
BOJ
- SEA
1 stop27h 45m
Aer Lingus
Deal found 6/15![Aer Lingus logo]()
$1,475
This United Airlines deal was found by Cheapflights users on 6/16. 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 12/136:57 am
SEA
- SOF
2 stops29h 48m
United Airlines
Tue 12/296:00 am
SOF
- SEA
2 stops24h 54m
United Airlines
Deal found 6/16![United Airlines logo]()
$778
This United Airlines deal was found by Cheapflights users on 6/15. 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 12/1210:45 pm
SEA
- SOF
2 stops28h 25m
United Airlines
Tue 12/292:00 pm
SOF
- SEA
1 stop33h 00m
United Airlines
Deal found 6/15![United Airlines logo]()
$780
This KAYAK deal was found by Cheapflights users on 6/16. 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.
Sun 8/26:50 pm
SEA
- VAR
2 stops34h 25m
Lufthansa
Mon 8/248:20 pm
VAR
- SEA
1 stop25h 35m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$942
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1010:45 am
SEA
- SOF
2 stops26h 00m
United Airlines
Thu 12/246:25 am
SOF
- SEA
2 stops24h 29m
United Airlines
Deal found 6/13![United Airlines logo]()
$809
This Turkish Airlines deal was found by Cheapflights users on 6/14. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:15 pm
SEA
- VAR
1 stop27h 15m
Turkish Airlines
Sat 9/1910:10 pm
VAR
- SEA
1 stop29h 10m
Turkish Airlines
Deal found 6/14![Turkish Airlines logo]()
$1,011
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1110:45 pm
SEA
- SOF
2 stops28h 30m
United Airlines
Wed 12/306:25 am
SOF
- SEA
1 stop15h 35m
United Airlines
Deal found 6/13![United Airlines logo]()
$819
This Turkish Airlines deal was found by Cheapflights users on 6/12. 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 8/27:15 pm
SEA
- VAR
1 stop27h 15m
Turkish Airlines
Tue 9/159:20 am
VAR
- SEA
1 stop18h 00m
Turkish Airlines
Deal found 6/12![Turkish Airlines logo]()
$1,028
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/102:00 pm
SEA
- SOF
1 stop18h 10m
United Airlines
Wed 12/306:25 am
SOF
- SEA
1 stop15h 35m
United Airlines
Deal found 6/13![United Airlines logo]()
$827
This KAYAK deal was found by Cheapflights users on 6/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/32:10 pm
SEA
- BOJ
1 stop18h 10m
Lufthansa
Tue 8/187:05 pm
BOJ
- SEA
1 stop26h 50m
Lufthansa
Deal found 6/14![Lufthansa logo]()
$1,206
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Sun 7/262:10 pm
SEA
- BOJ
3 stops33h 45m
Multiple Airlines
Sun 8/27:55 pm
BOJ
- SEA
2 stops31h 15m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,333
This United Airlines deal was found by Cheapflights users on 6/14. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am
SEA
- SOF
2 stops30h 15m
United Airlines
Tue 9/226:10 am
SOF
- SEA
1 stop15h 45m
United Airlines
Deal found 6/14![United Airlines logo]()
$829
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/237:00 am
SEA
- SOF
2 stops30h 15m
United Airlines
Tue 9/16:10 am
SOF
- SEA
1 stop20h 49m
United Airlines
Deal found 6/12![United Airlines logo]()
$830
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 8/37:10 pm
SEA
- BOJ
1 stop17h 25m
Multiple Airlines
Fri 8/148:15 pm
BOJ
- SEA
2 stops30h 55m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,394
This oojo deal was found by Cheapflights users on 6/11. 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.
Sun 7/267:20 pm
SEA
- BOJ
2 stops54h 25m
Lufthansa
Sun 8/29:50 am
BOJ
- SEA
1 stop17h 09m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$1,312
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Wed 8/57:10 pm
SEA
- BOJ
1 stop17h 25m
Multiple Airlines
Fri 8/148:15 pm
BOJ
- SEA
2 stops30h 55m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,394
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Sat 8/15:30 pm
SEA
- BOJ
1 stop15h 30m
Multiple Airlines
Wed 8/1911:20 pm
BOJ
- SEA
2 stops26h 40m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,416
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 8/37:10 pm
SEA
- BOJ
1 stop17h 25m
Multiple Airlines
Thu 8/207:15 pm
BOJ
- SEA
2 stops31h 55m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,442
This BusinessClass deal was found by Cheapflights users on 6/15. 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.
Thu 7/3011:56 pm
SEA
- BOJ
2 stops36h 34m
Multiple Airlines
Thu 8/611:25 pm
BOJ
- SEA
2 stops33h 39m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,473
This Mytrip deal was found by Cheapflights users on 6/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:40 pm
SEA
- BOJ
2 stops20h 55m
Multiple Airlines
Fri 7/3111:25 am
BOJ
- SEA
3 stops33h 15m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,595
Last-minute flights from Seattle to BulgariaDiscover last-minute flight deals from Seattle to Bulgaria. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Bulgaria. Data last updated June 16, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/57:15 pm
SEA
- SOF
1 stop15h 05m
Turkish Airlines
Sun 7/199:10 pm
SOF
- SEA
1 stop23h 30m
Turkish Airlines
Deal found 6/14![Turkish Airlines logo]()
$902
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:15 pm
SEA
- SOF
1 stop15h 05m
Turkish Airlines
Fri 8/219:10 pm
SOF
- SEA
1 stop23h 30m
Turkish Airlines
Deal found 6/11![Turkish Airlines logo]()
$940
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 7/96:50 pm
SEA
- SOF
1 stop18h 25m
United Airlines
Wed 8/196:10 am
SOF
- SEA
1 stop20h 49m
United Airlines
Deal found 6/11![United Airlines logo]()
$886
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 7/96:50 pm
SEA
- SOF
1 stop18h 25m
United Airlines
Sun 8/236:10 am
SOF
- SEA
1 stop20h 49m
United Airlines
Deal found 6/11![United Airlines logo]()
$936
This KAYAK deal was found by Cheapflights users on 6/11. 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.
Thu 7/96:50 pm
SEA
- SOF
1 stop18h 25m
Lufthansa
Fri 8/217:25 pm
SOF
- SEA
1 stop31h 34m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$951
This Priceline deal was found by Cheapflights users on 6/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:20 pm
SEA
- BOJ
2 stops54h 25m
Lufthansa
Sun 8/29:50 am
BOJ
- SEA
2 stops60h 05m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$1,238
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Sun 7/262:10 pm
SEA
- BOJ
3 stops33h 45m
Multiple Airlines
Sun 8/27:55 pm
BOJ
- SEA
2 stops31h 15m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,333
This oojo deal was found by Cheapflights users on 6/12. 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.
Mon 7/2712:35 pm
SEA
- VAR
1 stop33h 55m
Turkish Airlines
Fri 8/710:20 pm
VAR
- SEA
1 stop29h 00m
Turkish Airlines
Deal found 6/12![Turkish Airlines logo]()
$1,041
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2710:45 am
SEA
- VAR
2 stops23h 25m
Multiple Airlines
Fri 8/79:45 am
VAR
- SEA
1 stop17h 14m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$1,156
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:50 pm
SEA
- SOF
1 stop18h 25m
United Airlines
Tue 8/42:10 pm
SOF
- SEA
1 stop31h 45m
United Airlines
Deal found 6/13![United Airlines logo]()
$912
This KLM deal was found by Cheapflights users on 6/15. 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.
Thu 7/301:45 pm
SEA
- SOF
1 stop14h 15m
KLM
Thu 8/67:00 am
SOF
- SEA
1 stop14h 37m
KLM
Deal found 6/15![KLM logo]()
$941
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Thu 7/307:05 am
SEA
- SOF
2 stops30h 10m
United Airlines
Thu 8/66:10 am
SOF
- SEA
1 stop20h 49m
United Airlines
Deal found 6/15![United Airlines logo]()
$945
One-way flights from Seattle to BulgariaSearch for one-way flight options from Seattle to Bulgaria. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
Search for one-way flight options from Seattle to Bulgaria. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:25 pm
SEA
- SOF
3 stops48h 55m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/2011:25 pm
SEA
- VAR
3 stops33h 25m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$334
This Lufthansa deal was found by Cheapflights users on 6/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:50 pm
SEA
- SOF
1 stop18h 25m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$426
This Air France deal was found by Cheapflights users on 6/11. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:40 pm
SEA
- SOF
1 stop33h 20m
Air France
Deal found 6/11![Air France logo]()
$464
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/3111:04 pm
SEA
- SOF
2 stops27h 06m
United Airlines
Deal found 6/11![United Airlines logo]()
$471
This KAYAK deal was found by Cheapflights users on 6/15. 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.
Mon 7/207:54 pm
SEA
- VAR
2 stops38h 51m
Lufthansa
Deal found 6/15![Lufthansa logo]()
$484
This KAYAK deal was found by Cheapflights users on 6/16. 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.
Sat 8/16:50 pm
SEA
- VAR
1 stop30h 40m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$549
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:50 pm
SEA
- BOJ
2 stops55h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$569
Find flight deals from Seattle to Bulgaria
Keep the following information in mind while searching for Seattle to Bulgaria flight deals. Data was last updated June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $745 (Gotogate) |
One-way from | $311 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $1,147 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Bulgaria 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 June 16, 2026.
Use the filters below to find and compare flights from Seattle to Bulgaria that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Mon 8/31
7:15 pm-8:20 pm
1 stop15h 05m
Sofia
Fri 9/11
9:35 am-10:40 am
1 stop35h 05m
$768
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Wed 12/9
2:50 pm-10:45 pm
1 stop21h 55m
Sofia
Tue 12/29
6:00 am-8:54 pm
2 stops24h 54m
$774
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Sun 12/13
6:57 am-10:45 pm
2 stops29h 48m
Sofia
Tue 12/29
6:00 am-8:54 pm
2 stops24h 54m
$778
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Sat 12/12
10:45 pm-1:10 pm
2 stops28h 25m
Sofia
Tue 12/29
2:00 pm-1:00 pm
1 stop33h 00m
$780
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Thu 12/10
10:45 am-10:45 pm
2 stops26h 00m
Sofia
Thu 12/24
6:25 am-8:54 pm
2 stops24h 29m
$809
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Fri 12/11
10:45 pm-1:15 pm
2 stops28h 30m
Sofia
Wed 12/30
6:25 am-12:00 pm
1 stop15h 35m
$819
Quickest round-trip
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Thu 12/10
2:00 pm-6:10 pm
1 stop18h 10m
Sofia
Wed 12/30
6:25 am-12:00 pm
1 stop15h 35m
$827
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Sun 9/6
7:00 am-11:15 pm
2 stops30h 15m
Sofia
Tue 9/22
6:10 am-11:55 am
1 stop15h 45m
$829
SeattleSofia
SEA - SOF
SEASOF
Seattle/Tacoma Intl
Sun 8/23
7:00 am-11:15 pm
2 stops30h 15m
Sofia
Tue 9/1
6:10 am-4:59 pm
1 stop20h 49m
$830
SeattleVarna
SEA - VAR
SEAVAR
Seattle/Tacoma Intl
Sun 8/2
6:50 pm-3:15 pm
2 stops34h 25m
Varna
Tue 9/15
4:00 pm-11:55 am
2 stops29h 55m
$868
Showing 1-10 of 30 resultsSorted by cheapest first
Best time to book a flight from Seattle to Bulgaria
Have a flexible travel schedule? Discover the best time to fly to Bulgaria from Seattle with our price prediction graph.
SEA-SOF
SEA-VAR
SEA-BOJ
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 Seattle to Bulgaria
SEA-BG0
SEA-SOF
SEA-VAR
SEA-BOJ
What is the cheapest month to book a flight from Seattle to Bulgaria?
Currently, August is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $228). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $716). 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 far ahead should I book a flight from Seattle to Bulgaria?
Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Bulgaria. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Bulgaria
Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated June 16, 2026.
Read reviews from past customers who have flown KLM,Austrian Airlines, andTurkish Airlines from Seattle to Bulgaria. 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.
Entertainment
7.2
Overall
7.8
Boarding
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Overall
7.8
Boarding
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Overall
7.8
Boarding
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Overall
7.8
Boarding
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Overall
7.8
Boarding
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Overall
7.8
Boarding
7.8
Crew
8.4
Comfort
7.7
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Bulgaria
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Bulgaria by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Bulgaria by cabin class
Find flights from Seattle to Bulgaria, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Bulgaria flights
Browse other Seattle and Bulgaria flight options. Last updated on June 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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Top 5 airlines flying from Seattle to Bulgaria
Discover the top 5 airlines that operate flights from Seattle to Bulgaria. 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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$538 | Average$908 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$541 | Average$901 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$572 | Average$859 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$620 | Average$885 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$884 | Average$897 | FlexibilityNo cancel fee | On-time78% |