Cheap Flights from Boston, MA to San Diego, CA from $115

Return flight: San Diego – Boston

On Cheapflightsplus.com you will find 7 direct and 423 connecting flights from Boston to San Diego. You can compare airfare deals from 7 airlines and multiple travel sites from $115, book and save on cheap plane tickets and last minute offers. Also check out BOS-SAN flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boston to San Diego Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $115 (one-way), $197 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Boston to San Diego. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
07:45 — 10:50
07:45 — 10:50 HA4821 Hawaiian Airlines
Boston — San Diego
6h 5m
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from$118
07:45 — 10:50
07:45 — 10:50 AS260 Alaska Airlines
Boston — San Diego
6h 5m
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from$122
07:45 — 10:50
07:45 — 10:50 HA4789 Hawaiian Airlines
Boston — San Diego
6h 5m
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from$139
08:40 — 12:01
08:40 — 12:01 HA4832 Hawaiian Airlines
Boston — San Diego
6h 21m
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from$138
08:40 — 11:50
08:40 — 11:50 HA4820 Hawaiian Airlines
Boston — San Diego
6h 10m
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from$139
10:39 — 16:22
10:39 — 12:46 G4433 Allegiant Air
Boston — Des Moines
1h 59m stop
14:45 — 16:22 G42063 Allegiant Air
Des Moines — San Diego
8h 43m
including layover
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from$115
10:39 — 16:10
10:39 — 12:46 G4433 Allegiant Air
Boston — Des Moines
1h 53m stop
14:39 — 16:10 G42074 Allegiant Air
Des Moines — San Diego
8h 31m
including layover
Find flight
from$126
10:39 — 16:19
10:39 — 12:46 G4433 Allegiant Air
Boston — Des Moines
1h 57m stop
14:43 — 16:19 G4474 Allegiant Air
Des Moines — San Diego
8h 40m
including layover
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from$128
15:49 — 19:53
+1 day
15:49 — 19:13 NK2127 Spirit Airlines
Boston — Miami
2h 55m stop
22:08 — 00:25 NK777 Spirit Airlines
Miami — Las Vegas
18h 11m stop
18:36 — 19:53 NK2020 Spirit Airlines
Las Vegas — San Diego
31h 4m
including layover
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from$138
16:44 — 18:26
+1 day
15:49 — 19:13 NK2127 Spirit Airlines
Boston — Miami
2h 10m stop
22:08 — 00:25 NK777 Spirit Airlines
Miami — Las Vegas
16h 15m stop
16:43 — 18:03 NK2295 Spirit Airlines
Las Vegas — San Diego
28h 42m
including layover
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from$138
16:44 — 23:29
+1 day
15:49 — 19:13 NK2127 Spirit Airlines
Boston — Miami
2h 10m stop
22:08 — 00:25 NK777 Spirit Airlines
Miami — Las Vegas
21h 21m stop
22:42 — 23:56 NK2390 Spirit Airlines
Las Vegas — San Diego
33h 45m
including layover
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from$138
16:49 — 20:12
16:49 — 20:12 AS505 Alaska Airlines
Boston — San Diego
6h 23m
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from$142
17:08 — 20:19
17:08 — 20:19 AS389 Alaska Airlines
Boston — San Diego
6h 11m
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from$142
17:36 — 23:29
+1 day
17:42 — 20:53 NK2093 Spirit Airlines
Boston — Orlando
1h 5m stop
21:57 — 23:59 NK2292 Spirit Airlines
Orlando — Las Vegas
21h 56m stop
22:42 — 23:56 NK2390 Spirit Airlines
Las Vegas — San Diego
32h 53m
including layover
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from$138
17:42 — 18:03
+1 day
17:42 — 20:53 NK2093 Spirit Airlines
Boston — Orlando
1h 4m stop
21:57 — 23:59 NK2292 Spirit Airlines
Orlando — Las Vegas
16h 44m stop
16:43 — 18:03 NK2295 Spirit Airlines
Las Vegas — San Diego
27h 21m
including layover
Find flight
from$138
*Departure and arrival times - local. Updated on September 18, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Boston to San Diego depends on and how to choose the most interesting flight option for you.

Distance between Boston and San Diego is 4156 miles. Time difference between the cities is 3h. Airplanes depart 05:25 to 22:40 from 4 Boston airports and arrive 05:25 to 22:40 to 11 San Diego airports. Average flight time is 6h 10m.

  • The fastest flight 6h 5m
  • Average flight time 6h 10m
  • The earliest flight 05:25
  • The latest flight 22:40
  • Distance 2583 ml

The cheapest months to travel to San Diego are june (from 115 $), september (from 118 $), august (from 119 $).

The most expensive months are february (from 252 $), december (from 247 $), november (from 227 $).

What is the lowest airfare Boston to San Diego?

The cheapest plane ticket found by our users is $115. This airfare is for economy class on one-way G4433 flight by Allegiant Air for June 6, 2025 which leaves Logan in Boston at 10:39 am and arrives at San Diego San Diego at 16:22.

Economy class
$115
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Business class
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First class
?
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Popular Airlines on the Route

The flight Boston — San Diego is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 48 departures per week at the price of from $ 122 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 12254.

Direct flights

There are 7 nonstop flights on the route. The fastest direct flight is HA4821 by Hawaiian Airlines takes 6h 5m and the cheapest is G4433 by Allegiant Air for $118.

  • AS - Alaska Airlines
    from $122
    Find
  • HA - Hawaiian Airlines
    from $118
    Find
See more direct flights

Connecting Flights

There are 423 flights with layovers on the route. The fastest connecting flight is UA497 by United Airlines takes 7h 38m and the cheapest is G4433 by Allegiant Air for $115.

  • AS - Alaska Airlines
    from $152
    Find
  • SY - Sun Country Airlines
    from $186
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  • HA - Hawaiian Airlines
    from $144
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  • UA - United Airlines
    from $170
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  • TP - TAP Portugal
    from $1364
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  • G4 - Allegiant Air
    from $115
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  • NK - Spirit Airlines
    from $138
    Find
See more connecting flights

Airports

You can fly from Boston to San Diego from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).

Boston airports

  • Boston City Heliport-JBC
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  • Boston RT128 Rail-ZRU
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  • Boston South Rail-ZTO
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  • Logan-BOS
    from $115
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San Diego airports

  • San Diego-SAN
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  • San Diego Regional-USA
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  • Gillespie Field-SEE
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  • Golden Triangle Reg.-GTR
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  • El Cajon-CJN
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  • Lowndes County-UBS
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  • Miramar NAS-NKX
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  • Montgomery Field-MYF
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  • North Island NAS-NZY
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  • Brown Field Municipal-SDM
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  • AFB-CBM
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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