AirHint found the following cheapest return flights from Seattle (SEA) to Budapest (BUD) in August 2025 (see full year).

Return flights

10 Aug - 25 Aug	Air France
31 Aug - 07 Sep	Scandinavian Airlines
20 Aug - 02 Sep	Icelandair
08 Aug - 22 Aug	Delta
18 Aug - 01 Sep	Icelandair
19 Aug - 27 Aug	Air France
06 Aug - 14 Aug	Icelandair
24 Aug - 31 Aug	Delta
05 Aug - 10 Aug	Icelandair

Also check the deals for one-way flights from Seattle to Budapest in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Seattle to Budapest in August from 560€

Return flights