Cheapest return EWR–SJO flights, June

AirHint found the following cheapest return flights from Newark (EWR) to San Jose (SJO) in June 2026 (see full year).

Return flights

03 Jun - 13 Jun Frontier Airlines
03 Jun - 10 Jun Arajet
13 Jun - 25 Jul Frontier Airlines
13 Jun - 18 Jun Frontier Airlines
10 Jun - 17 Jun Frontier Airlines
15 Jun - 23 Jun United
03 Jun - 11 Jun Arajet
20 Jun - 27 Jun Arajet
04 Jun - 10 Jun United
10 Jun - 17 Jun United direct
16 Jun - 23 Jun Frontier Airlines
30 Jun - 07 Jul Frontier Airlines
01 Jun - 06 Jul United
28 Jun - 04 Jul Spirit Airlines
26 Jun - 05 Jul Spirit Airlines
25 Jun - 06 Jul United
27 Jun - 03 Jul United

Also check the deals for one-way flights from Newark to San Jose in June.

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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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