Flights to San Jose from Portsmouth

View ฿4,220 flight on Sat, 30 Aug 2025Opens in a new window

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Cheap Flights from Portsmouth (BOS) to San Jose (SJC)

Prices were available within the past 7 days and start at ฿4,220 for one-way flights and ฿9,395 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 30 Aug - Tue, 2 Sep
BOS
Boston
SFO
San Francisco
฿9,395 Return, found 19 hours ago
฿9,395
Return
found 19 hours ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Francisco, returning Tue, 2 Sep, priced at ฿9,395 found 19 hours ago
Delta
Sat, 30 Aug - Tue, 2 Sep
BOS
Boston
SFO
San Francisco
฿9,745 Return, found 19 hours ago
฿9,745
Return
found 19 hours ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Francisco, returning Tue, 2 Sep, priced at ฿9,745 found 19 hours ago
Delta
Sat, 30 Aug - Tue, 2 Sep
BOS
Boston
SFO
San Francisco
฿9,755 Return, found 19 hours ago
฿9,755
Return
found 19 hours ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Francisco, returning Tue, 2 Sep, priced at ฿9,755 found 19 hours ago
Delta
Sat, 30 Aug - Tue, 2 Sep
BOS
Boston
SFO
San Francisco
฿10,080 Return, found 19 hours ago
฿10,080
Return
found 19 hours ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Francisco, returning Tue, 2 Sep, priced at ฿10,080 found 19 hours ago
American Airlines
Sat, 30 Aug - Tue, 2 Sep
BOS
Boston
SFO
San Francisco
฿11,050 Return, found 19 hours ago
฿11,050
Return
found 19 hours ago
Select American Airlines flight, departing Sat, 30 Aug from Boston to San Francisco, returning Tue, 2 Sep, priced at ฿11,050 found 19 hours ago
United
Sat, 30 Aug - Tue, 2 Sep
BOS
Boston
SFO
San Francisco
฿11,060 Return, found 19 hours ago
฿11,060
Return
found 19 hours ago
Select United flight, departing Sat, 30 Aug from Boston to San Francisco, returning Tue, 2 Sep, priced at ฿11,060 found 19 hours ago

Find the cheapest month to fly from Boston (BOS) to San Jose (SJC)

September is typically the cheapest month to fly

From ฿4,807 - ฿11,540 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.