$139+ Cheap flights from Boston to San Diego (BOS - SAN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Boston to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to San Diego are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday
Cheap flight deals from Boston to San Diego
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Best
Last-minute
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Cheapest flights from Boston to San DiegoExplore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This American Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:21 pm
BOS
- SAN
1 stop10h 35m
American Airlines
Sun 5/310:40 pm
SAN
- BOS
1 stop7h 47m
American Airlines
Deal found 4/12![American Airlines logo]()
$247
This SmartFares deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:40 pm
BOS
- SAN
Nonstop6h 29m
Alaska Airlines
Fri 6/58:54 pm
SAN
- BOS
Nonstop5h 50m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$248
This SmartFares deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:00 pm
BOS
- SAN
Nonstop6h 18m
JetBlue
Fri 5/158:25 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/16![JetBlue logo]()
$249
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:26 am
BOS
- SAN
1 stop10h 25m
American Airlines
Fri 5/110:40 pm
SAN
- BOS
1 stop7h 47m
American Airlines
Deal found 4/14![American Airlines logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
BOS
- SAN
2 stops20h 50m
Multiple Airlines
Tue 5/1212:54 pm
SAN
- BOS
1 stop19h 12m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$266
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:06 pm
BOS
- SAN
1 stop9h 33m
American Airlines
Sat 7/411:07 am
SAN
- BOS
1 stop9h 03m
American Airlines
Deal found 4/14![American Airlines logo]()
$267
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:24 pm
BOS
- SAN
1 stop8h 31m
American Airlines
Wed 5/131:16 pm
SAN
- BOS
1 stop8h 08m
American Airlines
Deal found 4/15![American Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:35 am
BOS
- SAN
1 stop8h 15m
United Airlines
Wed 9/302:09 pm
SAN
- BOS
1 stop8h 00m
United Airlines
Deal found 4/14![United Airlines logo]()
$270
This KAYAK deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:37 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Tue 6/28:44 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/14![JetBlue logo]()
$271
This Cheapflightsfares deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Sun 5/108:30 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/16![JetBlue logo]()
$272
This Super.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:00 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Thu 5/288:44 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/13![JetBlue logo]()
$273
This Flysmarter deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Sun 5/108:30 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/13![JetBlue logo]()
$274
Best flights from Boston to San DiegoDiscover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:00 am
BOS
- SAN
1 stop10h 18m
Alaska Airlines
Sun 5/318:54 pm
SAN
- BOS
Nonstop5h 50m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:15 am
BOS
- SAN
Nonstop5h 55m
Southwest
Tue 8/2510:40 pm
SAN
- BOS
1 stop8h 15m
Southwest
Deal found 4/14![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:15 pm
BOS
- SAN
Nonstop6h 21m
Delta
Sun 6/79:54 pm
SAN
- BOS
Nonstop5h 36m
Delta
Deal found 4/13![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:45 am
BOS
- SAN
1 stop8h 32m
United Airlines
Tue 8/186:55 pm
SAN
- BOS
1 stop8h 04m
United Airlines
Deal found 4/15![United Airlines logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/248:05 am
BOS
- SAN
Nonstop6h 27m
Alaska Airlines
Wed 6/310:11 am
SAN
- BOS
1 stop10h 48m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:44 pm
BOS
- SAN
Nonstop6h 29m
Delta
Sun 5/39:59 pm
SAN
- BOS
Nonstop5h 31m
Delta
Deal found 4/16![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:25 am
BOS
- SAN
1 stop14h 05m
Southwest
Wed 8/129:30 pm
SAN
- BOS
Nonstop5h 30m
Southwest
Deal found 4/15![Southwest logo]()
$333
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:15 am
BOS
- SAN
2 stops14h 55m
United Airlines
Fri 10/210:30 pm
SAN
- BOS
1 stop7h 54m
United Airlines
Deal found 4/13![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/103:45 pm
BOS
- SAN
1 stop10h 35m
Southwest
Fri 6/121:20 pm
SAN
- BOS
1 stop8h 40m
Southwest
Deal found 4/13![Southwest logo]()
$340
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:43 pm
BOS
- SAN
1 stop8h 42m
United Airlines
Mon 5/48:45 pm
SAN
- BOS
2 stops11h 16m
United Airlines
Deal found 4/15![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/233:30 pm
BOS
- SAN
1 stop8h 00m
Southwest
Sat 5/308:20 pm
SAN
- BOS
2 stops9h 10m
Southwest
Deal found 4/12![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:25 am
BOS
- SAN
1 stop7h 45m
Southwest
Fri 8/219:30 pm
SAN
- BOS
Nonstop5h 30m
Southwest
Deal found 4/13![Southwest logo]()
$347
Last-minute flights from Boston to San DiegoDiscover last-minute flight deals from Boston to San Diego. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Diego. Data last updated April 17, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:21 pm
BOS
- SAN
1 stop10h 35m
American Airlines
Sun 5/310:40 pm
SAN
- BOS
1 stop7h 47m
American Airlines
Deal found 4/12![American Airlines logo]()
$247
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:26 am
BOS
- SAN
1 stop10h 25m
American Airlines
Fri 5/110:40 pm
SAN
- BOS
1 stop7h 47m
American Airlines
Deal found 4/14![American Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:21 pm
BOS
- SAN
1 stop10h 35m
American Airlines
Thu 5/77:20 pm
SAN
- BOS
1 stop7h 40m
American Airlines
Deal found 4/13![American Airlines logo]()
$267
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:24 pm
BOS
- SAN
1 stop8h 31m
American Airlines
Wed 5/131:16 pm
SAN
- BOS
1 stop8h 08m
American Airlines
Deal found 4/15![American Airlines logo]()
$268
This Flysmarter deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Sun 5/108:30 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/13![JetBlue logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
BOS
- SAN
2 stops20h 50m
Multiple Airlines
Tue 5/1212:54 pm
SAN
- BOS
1 stop19h 12m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$266
This SmartFares deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:00 pm
BOS
- SAN
Nonstop6h 18m
JetBlue
Fri 5/158:25 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/16![JetBlue logo]()
$249
This Cheapflightsfares deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Sun 5/108:30 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/16![JetBlue logo]()
$272
This KAYAK deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:00 am
BOS
- SAN
Nonstop6h 20m
JetBlue
Sat 5/239:10 pm
SAN
- BOS
Nonstop5h 35m
JetBlue
Deal found 4/14![JetBlue logo]()
$275
This Super.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:00 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Thu 5/288:44 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/13![JetBlue logo]()
$273
This KAYAK deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:37 am
BOS
- SAN
Nonstop6h 15m
JetBlue
Tue 6/28:44 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/14![JetBlue logo]()
$271
This SmartFares deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:40 pm
BOS
- SAN
Nonstop6h 29m
Alaska Airlines
Fri 6/58:54 pm
SAN
- BOS
Nonstop5h 50m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$248
One-way flights from Boston to San DiegoSearch for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
BOS
- SAN
2 stops18h 04m
Frontier
Deal found 4/14![Frontier logo]()
$139
This KAYAK deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:05 am
BOS
- SAN
Nonstop6h 05m
JetBlue
Deal found 4/14![JetBlue logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:01 pm
BOS
- SAN
2 stops23h 41m
Frontier
Deal found 4/15![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:00 am
BOS
- SAN
2 stops33h 43m
Frontier
Deal found 4/13![Frontier logo]()
$144
This Super.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:05 am
BOS
- SAN
Nonstop6h 05m
JetBlue
Deal found 4/16![JetBlue logo]()
$145
This KAYAK deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:05 am
BOS
- SAN
Nonstop6h 05m
JetBlue
Deal found 4/14![JetBlue logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:05 am
BOS
- SAN
Nonstop6h 05m
JetBlue
Deal found 4/16![JetBlue logo]()
$148
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:20 am
BOS
- SAN
1 stop10h 27m
American Airlines
Deal found 4/14![American Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
BOS
- SAN
2 stops20h 44m
Frontier
Deal found 4/14![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
BOS
- SAN
2 stops20h 12m
Frontier
Deal found 4/16![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:07 am
BOS
- SAN
3 stops25h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$154
Find flight deals from Boston to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $247 (American Airlines) |
One-way from | $139 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $426 |
Good round-trip deal | $313 or less |
Good one-way deal | $170 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
Use the filters below to find and compare flights from Boston to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Sat 5/30
6:00 am-1:18 pm
1 stop10h 18m
San Diego
Sun 5/31
8:54 pm-5:44 am
Nonstop5h 50m
$287
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Sun 5/24
8:05 am-11:32 am
Nonstop6h 27m
San Diego
Wed 6/3
10:11 am-11:59 pm
1 stop10h 48m
$287
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 8/20
11:15 am-2:10 pm
Nonstop5h 55m
San Diego
Tue 8/25
10:40 pm-9:55 am
1 stop8h 15m
$307
Quickest round-trip
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 6/4
5:15 pm-8:36 pm
Nonstop6h 21m
San Diego
Sun 6/7
9:54 pm-6:30 am
Nonstop5h 36m
$307
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 4/30
5:44 pm-9:13 pm
Nonstop6h 29m
San Diego
Sun 5/3
9:59 pm-6:30 am
Nonstop5h 31m
$327
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Wed 8/5
9:25 am-8:30 pm
1 stop14h 05m
San Diego
Wed 8/12
9:30 pm-6:00 am
Nonstop5h 30m
$333
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Wed 6/10
3:45 pm-11:20 pm
1 stop10h 35m
San Diego
Fri 6/12
1:20 pm-1:00 am
1 stop8h 40m
$340
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Sat 5/23
3:30 pm-8:30 pm
1 stop8h 00m
San Diego
Sat 5/30
8:20 pm-8:30 am
2 stops9h 10m
$342
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Fri 8/14
5:45 am-11:17 am
1 stop8h 32m
San Diego
Tue 8/18
6:55 pm-5:59 am
1 stop8h 04m
$347
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Fri 8/14
5:25 am-10:10 am
1 stop7h 45m
San Diego
Fri 8/21
9:30 pm-6:00 am
Nonstop5h 30m
$347
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Boston to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to San Diego in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Boston-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Boston with our price prediction graph.
BOS-SAN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to San Diego
Prices
Airlines
Delays
How far ahead should I book a flight from Boston to San Diego?
Use this chart to determine the optimal time to book a round-trip flight from Boston to San Diego. Price data was last updated on April 10, 2026.
The price you pay for your flight from Boston to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 37 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Boston to San Diego?
Currently, January is the cheapest month in which you can book a flight from Boston to San Diego (average of $329). Flying from Boston to San Diego in December is currently the most expensive (average of $468). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOS to SAN?
Find hourly flight availability from Boston to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2026.
When flying from Boston to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from Boston to San Diego delayed?
About 14% of weekly flights between Boston and San Diego have experienced delays in the past year, with the average delay time being 160 minutes.
What is the most punctual flight time for Boston to San Diego flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Sunday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to San Diego flights?
Over the last year, JetBlue have had the lowest number of delays on this route, with just 11% of flights being delayed.
The best insider tips for Boston to San Diego flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to San Diego trip
Our travel experts
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated April 17, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andHawaiian Airlines from Boston to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Related info for your journey
Find useful and relevant information for your journey from Boston to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
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Alternative routes for Boston to San Diego
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Complete your trip
Complete your trip to San Diego by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to San Diego by cabin class
Find flights from Boston to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and San Diego flights
Browse other Boston and San Diego flight options. Last updated on April 17, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 17, 2026.
Top 8 airlines flying from Boston to San Diego
Discover the top 8 airlines that operate flights from Boston to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$315 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$133 | Average$346 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$140 | Average$299 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$172 | Average$359 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$222 | Average$418 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$246 | Average$444 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$261 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$280 | Average$411 | FlexibilityNo cancel fee | On-time63% |