AirHint found the following cheapest return flights from Seattle (SEA) to Split (SPU) in May 2026 (see full year).

Return flights

03 May - 11 May	Air Canada
05 May - 12 May	Air Canada
01 May - 08 May	Air Canada
02 May - 09 May	Air Canada
06 May - 13 May	Air Canada
03 May - 10 May	Air Canada
13 May - 20 May	Lufthansa
12 May - 19 May	Austrian Airlines
08 May - 15 May	Air Canada
07 May - 14 May	Air Canada

Also check the deals for one-way flights from Seattle to Split in May.

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 Split in May from 470€

Return flights